./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test5-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 0e0057cc Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_274cfc7e-7d4a-4a49-8bc4-7eee5ce11a53/bin/utaipan-verify-SwPr7d2a91/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_274cfc7e-7d4a-4a49-8bc4-7eee5ce11a53/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_274cfc7e-7d4a-4a49-8bc4-7eee5ce11a53/bin/utaipan-verify-SwPr7d2a91/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_274cfc7e-7d4a-4a49-8bc4-7eee5ce11a53/bin/utaipan-verify-SwPr7d2a91/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test5-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_274cfc7e-7d4a-4a49-8bc4-7eee5ce11a53/bin/utaipan-verify-SwPr7d2a91/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_274cfc7e-7d4a-4a49-8bc4-7eee5ce11a53/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-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash adfc1710e761824cc0d761ee45a1724b8fd34135f47dcc82b27f8b64b97ca013 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-24 23:51:19,617 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-24 23:51:19,718 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_274cfc7e-7d4a-4a49-8bc4-7eee5ce11a53/bin/utaipan-verify-SwPr7d2a91/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf [2023-11-24 23:51:19,725 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-24 23:51:19,725 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-24 23:51:19,758 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-24 23:51:19,758 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-24 23:51:19,759 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-24 23:51:19,760 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-24 23:51:19,761 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-24 23:51:19,762 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-24 23:51:19,762 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-24 23:51:19,763 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-24 23:51:19,764 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-24 23:51:19,764 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-24 23:51:19,765 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-24 23:51:19,766 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-24 23:51:19,767 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-24 23:51:19,767 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-24 23:51:19,768 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-24 23:51:19,769 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-24 23:51:19,770 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-24 23:51:19,771 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-24 23:51:19,771 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-24 23:51:19,772 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-24 23:51:19,773 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-24 23:51:19,773 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-24 23:51:19,774 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-24 23:51:19,775 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-24 23:51:19,775 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-24 23:51:19,776 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-24 23:51:19,776 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-24 23:51:19,777 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-24 23:51:19,778 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-24 23:51:19,778 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-24 23:51:19,779 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-24 23:51:19,779 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-24 23:51:19,780 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-24 23:51:19,780 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-24 23:51:19,780 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-24 23:51:19,781 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-24 23:51:19,781 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-24 23:51:19,782 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-24 23:51:19,782 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-24 23:51:19,783 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-24 23:51:19,783 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-24 23:51:19,783 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-24 23:51:19,783 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-24 23:51:19,784 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_274cfc7e-7d4a-4a49-8bc4-7eee5ce11a53/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_274cfc7e-7d4a-4a49-8bc4-7eee5ce11a53/bin/utaipan-verify-SwPr7d2a91 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> adfc1710e761824cc0d761ee45a1724b8fd34135f47dcc82b27f8b64b97ca013 [2023-11-24 23:51:20,133 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-24 23:51:20,171 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-24 23:51:20,175 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-24 23:51:20,177 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-24 23:51:20,178 INFO L274 PluginConnector]: CDTParser initialized [2023-11-24 23:51:20,179 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_274cfc7e-7d4a-4a49-8bc4-7eee5ce11a53/bin/utaipan-verify-SwPr7d2a91/../../sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test5-1.i [2023-11-24 23:51:23,457 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-24 23:51:23,902 INFO L384 CDTParser]: Found 1 translation units. [2023-11-24 23:51:23,902 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_274cfc7e-7d4a-4a49-8bc4-7eee5ce11a53/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test5-1.i [2023-11-24 23:51:23,928 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_274cfc7e-7d4a-4a49-8bc4-7eee5ce11a53/bin/utaipan-verify-SwPr7d2a91/data/1c04c433d/35a5de3d1a714ebabd38e77b3aa6f02c/FLAG14c9641fb [2023-11-24 23:51:23,946 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_274cfc7e-7d4a-4a49-8bc4-7eee5ce11a53/bin/utaipan-verify-SwPr7d2a91/data/1c04c433d/35a5de3d1a714ebabd38e77b3aa6f02c [2023-11-24 23:51:23,953 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-24 23:51:23,957 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-24 23:51:23,959 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-24 23:51:23,959 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-24 23:51:23,965 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-24 23:51:23,966 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 11:51:23" (1/1) ... [2023-11-24 23:51:23,967 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@63eeeb24 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:51:23, skipping insertion in model container [2023-11-24 23:51:23,967 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 11:51:23" (1/1) ... [2023-11-24 23:51:24,040 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-24 23:51:24,685 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-24 23:51:24,723 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 23:51:24,724 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@329b0b00 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:51:24, skipping insertion in model container [2023-11-24 23:51:24,724 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-24 23:51:24,725 INFO L186 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2023-11-24 23:51:24,727 INFO L158 Benchmark]: Toolchain (without parser) took 768.98ms. Allocated memory is still 155.2MB. Free memory was 113.8MB in the beginning and 91.3MB in the end (delta: 22.5MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB. [2023-11-24 23:51:24,727 INFO L158 Benchmark]: CDTParser took 0.33ms. Allocated memory is still 117.4MB. Free memory is still 66.2MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-24 23:51:24,728 INFO L158 Benchmark]: CACSL2BoogieTranslator took 766.02ms. Allocated memory is still 155.2MB. Free memory was 113.4MB in the beginning and 91.3MB in the end (delta: 22.1MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB. [2023-11-24 23:51:24,730 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.33ms. Allocated memory is still 117.4MB. Free memory is still 66.2MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 766.02ms. Allocated memory is still 155.2MB. Free memory was 113.4MB in the beginning and 91.3MB in the end (delta: 22.1MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 737]: Unsupported Syntax Found a cast between two array/pointer types of different sizes while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_274cfc7e-7d4a-4a49-8bc4-7eee5ce11a53/bin/utaipan-verify-SwPr7d2a91/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_274cfc7e-7d4a-4a49-8bc4-7eee5ce11a53/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_274cfc7e-7d4a-4a49-8bc4-7eee5ce11a53/bin/utaipan-verify-SwPr7d2a91/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_274cfc7e-7d4a-4a49-8bc4-7eee5ce11a53/bin/utaipan-verify-SwPr7d2a91/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test5-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_274cfc7e-7d4a-4a49-8bc4-7eee5ce11a53/bin/utaipan-verify-SwPr7d2a91/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_274cfc7e-7d4a-4a49-8bc4-7eee5ce11a53/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-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash adfc1710e761824cc0d761ee45a1724b8fd34135f47dcc82b27f8b64b97ca013 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-24 23:51:27,594 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-24 23:51:27,752 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_274cfc7e-7d4a-4a49-8bc4-7eee5ce11a53/bin/utaipan-verify-SwPr7d2a91/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf [2023-11-24 23:51:27,762 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-24 23:51:27,763 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-24 23:51:27,811 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-24 23:51:27,812 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-24 23:51:27,813 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-24 23:51:27,814 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-24 23:51:27,820 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-24 23:51:27,821 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-24 23:51:27,821 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-24 23:51:27,822 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-24 23:51:27,824 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-24 23:51:27,825 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-24 23:51:27,825 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-24 23:51:27,826 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-24 23:51:27,826 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-24 23:51:27,828 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-24 23:51:27,829 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-24 23:51:27,830 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-24 23:51:27,830 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-24 23:51:27,831 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-24 23:51:27,831 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-24 23:51:27,832 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-24 23:51:27,832 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-24 23:51:27,833 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-24 23:51:27,833 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-24 23:51:27,834 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-11-24 23:51:27,835 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-11-24 23:51:27,836 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-24 23:51:27,837 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-24 23:51:27,837 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-24 23:51:27,838 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-24 23:51:27,838 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-24 23:51:27,838 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-24 23:51:27,839 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-24 23:51:27,840 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-24 23:51:27,840 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-24 23:51:27,841 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-24 23:51:27,841 INFO L153 SettingsManager]: * Trace refinement strategy=WALRUS [2023-11-24 23:51:27,842 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-11-24 23:51:27,842 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-24 23:51:27,842 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-24 23:51:27,843 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-24 23:51:27,843 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_274cfc7e-7d4a-4a49-8bc4-7eee5ce11a53/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_274cfc7e-7d4a-4a49-8bc4-7eee5ce11a53/bin/utaipan-verify-SwPr7d2a91 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> adfc1710e761824cc0d761ee45a1724b8fd34135f47dcc82b27f8b64b97ca013 [2023-11-24 23:51:28,322 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-24 23:51:28,357 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-24 23:51:28,360 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-24 23:51:28,362 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-24 23:51:28,363 INFO L274 PluginConnector]: CDTParser initialized [2023-11-24 23:51:28,365 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_274cfc7e-7d4a-4a49-8bc4-7eee5ce11a53/bin/utaipan-verify-SwPr7d2a91/../../sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test5-1.i [2023-11-24 23:51:31,563 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-24 23:51:32,049 INFO L384 CDTParser]: Found 1 translation units. [2023-11-24 23:51:32,050 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_274cfc7e-7d4a-4a49-8bc4-7eee5ce11a53/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test5-1.i [2023-11-24 23:51:32,070 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_274cfc7e-7d4a-4a49-8bc4-7eee5ce11a53/bin/utaipan-verify-SwPr7d2a91/data/ba6da00b4/18244503ff0e446ab486f320dbe1ba91/FLAGb21d16271 [2023-11-24 23:51:32,087 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_274cfc7e-7d4a-4a49-8bc4-7eee5ce11a53/bin/utaipan-verify-SwPr7d2a91/data/ba6da00b4/18244503ff0e446ab486f320dbe1ba91 [2023-11-24 23:51:32,089 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-24 23:51:32,091 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-24 23:51:32,093 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-24 23:51:32,093 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-24 23:51:32,099 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-24 23:51:32,100 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 11:51:32" (1/1) ... [2023-11-24 23:51:32,101 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@382dcb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:51:32, skipping insertion in model container [2023-11-24 23:51:32,101 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 11:51:32" (1/1) ... [2023-11-24 23:51:32,170 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-24 23:51:33,066 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-24 23:51:33,098 INFO L199 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2023-11-24 23:51:33,135 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-24 23:51:33,357 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-24 23:51:33,386 INFO L202 MainTranslator]: Completed pre-run [2023-11-24 23:51:33,541 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-24 23:51:33,581 WARN L675 CHandler]: The function memcmp is called, but not defined or handled by StandardFunctionHandler. [2023-11-24 23:51:33,589 INFO L206 MainTranslator]: Completed translation [2023-11-24 23:51:33,589 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:51:33 WrapperNode [2023-11-24 23:51:33,590 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-24 23:51:33,591 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-24 23:51:33,591 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-24 23:51:33,591 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-24 23:51:33,599 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:51:33" (1/1) ... [2023-11-24 23:51:33,639 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:51:33" (1/1) ... [2023-11-24 23:51:33,701 INFO L138 Inliner]: procedures = 180, calls = 390, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 1418 [2023-11-24 23:51:33,702 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-24 23:51:33,703 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-24 23:51:33,703 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-24 23:51:33,703 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-24 23:51:33,713 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:51:33" (1/1) ... [2023-11-24 23:51:33,714 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:51:33" (1/1) ... [2023-11-24 23:51:33,737 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:51:33" (1/1) ... [2023-11-24 23:51:33,738 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:51:33" (1/1) ... [2023-11-24 23:51:33,827 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:51:33" (1/1) ... [2023-11-24 23:51:33,852 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:51:33" (1/1) ... [2023-11-24 23:51:33,864 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:51:33" (1/1) ... [2023-11-24 23:51:33,881 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:51:33" (1/1) ... [2023-11-24 23:51:33,903 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-24 23:51:33,911 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-24 23:51:33,911 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-24 23:51:33,912 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-24 23:51:33,912 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:51:33" (1/1) ... [2023-11-24 23:51:33,951 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-24 23:51:33,963 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_274cfc7e-7d4a-4a49-8bc4-7eee5ce11a53/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-24 23:51:33,982 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_274cfc7e-7d4a-4a49-8bc4-7eee5ce11a53/bin/utaipan-verify-SwPr7d2a91/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-24 23:51:33,984 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_274cfc7e-7d4a-4a49-8bc4-7eee5ce11a53/bin/utaipan-verify-SwPr7d2a91/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-24 23:51:34,017 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2023-11-24 23:51:34,018 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2023-11-24 23:51:34,018 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2023-11-24 23:51:34,018 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2023-11-24 23:51:34,018 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-11-24 23:51:34,018 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-11-24 23:51:34,019 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2023-11-24 23:51:34,019 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2023-11-24 23:51:34,019 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-24 23:51:34,019 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-24 23:51:34,019 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-11-24 23:51:34,020 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-24 23:51:34,020 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2023-11-24 23:51:34,020 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-11-24 23:51:34,020 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-24 23:51:34,021 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2023-11-24 23:51:34,021 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2023-11-24 23:51:34,021 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-24 23:51:34,021 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-24 23:51:34,289 INFO L241 CfgBuilder]: Building ICFG [2023-11-24 23:51:34,291 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-24 23:51:34,340 WARN L821 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2023-11-24 23:51:42,473 INFO L282 CfgBuilder]: Performing block encoding [2023-11-24 23:51:42,801 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-24 23:51:42,802 INFO L309 CfgBuilder]: Removed 83 assume(true) statements. [2023-11-24 23:51:42,803 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 11:51:42 BoogieIcfgContainer [2023-11-24 23:51:42,803 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-24 23:51:42,806 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-24 23:51:42,806 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-24 23:51:42,809 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-24 23:51:42,810 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.11 11:51:32" (1/3) ... [2023-11-24 23:51:42,811 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4bd62c48 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 11:51:42, skipping insertion in model container [2023-11-24 23:51:42,811 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:51:33" (2/3) ... [2023-11-24 23:51:42,812 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4bd62c48 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 11:51:42, skipping insertion in model container [2023-11-24 23:51:42,812 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 11:51:42" (3/3) ... [2023-11-24 23:51:42,813 INFO L112 eAbstractionObserver]: Analyzing ICFG uthash_SFH_test5-1.i [2023-11-24 23:51:42,835 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-24 23:51:42,836 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 728 error locations. [2023-11-24 23:51:42,930 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-24 23:51:42,941 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;@1b9e5561, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-24 23:51:42,941 INFO L358 AbstractCegarLoop]: Starting to check reachability of 728 error locations. [2023-11-24 23:51:42,955 INFO L276 IsEmpty]: Start isEmpty. Operand has 1324 states, 585 states have (on average 2.517948717948718) internal successors, (1473), 1314 states have internal predecessors, (1473), 13 states have call successors, (13), 3 states have call predecessors, (13), 3 states have return successors, (13), 9 states have call predecessors, (13), 13 states have call successors, (13) [2023-11-24 23:51:42,962 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2023-11-24 23:51:42,962 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:51:42,963 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2023-11-24 23:51:42,964 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 725 more)] === [2023-11-24 23:51:42,973 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:51:42,974 INFO L85 PathProgramCache]: Analyzing trace with hash 69411206, now seen corresponding path program 1 times [2023-11-24 23:51:42,991 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-24 23:51:42,991 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1239940388] [2023-11-24 23:51:42,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:51:42,993 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 23:51:42,993 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_274cfc7e-7d4a-4a49-8bc4-7eee5ce11a53/bin/utaipan-verify-SwPr7d2a91/mathsat [2023-11-24 23:51:42,996 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_274cfc7e-7d4a-4a49-8bc4-7eee5ce11a53/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 23:51:43,060 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_274cfc7e-7d4a-4a49-8bc4-7eee5ce11a53/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 23:51:43,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:51:43,246 INFO L262 TraceCheckSpWp]: Trace formula consists of 37 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-24 23:51:43,255 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 23:51:43,338 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2023-11-24 23:51:43,370 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 23:51:43,370 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-24 23:51:43,371 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-24 23:51:43,371 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1239940388] [2023-11-24 23:51:43,385 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1239940388] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 23:51:43,385 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 23:51:43,386 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-24 23:51:43,388 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [878181695] [2023-11-24 23:51:43,389 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 23:51:43,394 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-24 23:51:43,394 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-24 23:51:43,441 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-24 23:51:43,442 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-24 23:51:43,448 INFO L87 Difference]: Start difference. First operand has 1324 states, 585 states have (on average 2.517948717948718) internal successors, (1473), 1314 states have internal predecessors, (1473), 13 states have call successors, (13), 3 states have call predecessors, (13), 3 states have return successors, (13), 9 states have call predecessors, (13), 13 states have call successors, (13) Second operand has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 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 23:51:48,054 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 23:51:48,055 INFO L93 Difference]: Finished difference Result 1533 states and 1659 transitions. [2023-11-24 23:51:48,057 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-24 23:51:48,058 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 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 4 [2023-11-24 23:51:48,059 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 23:51:48,101 INFO L225 Difference]: With dead ends: 1533 [2023-11-24 23:51:48,102 INFO L226 Difference]: Without dead ends: 1532 [2023-11-24 23:51:48,104 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 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 23:51:48,113 INFO L413 NwaCegarLoop]: 781 mSDtfsCounter, 1235 mSDsluCounter, 236 mSDsCounter, 0 mSdLazyCounter, 907 mSolverCounterSat, 102 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1246 SdHoareTripleChecker+Valid, 1017 SdHoareTripleChecker+Invalid, 1009 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 102 IncrementalHoareTripleChecker+Valid, 907 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.4s IncrementalHoareTripleChecker+Time [2023-11-24 23:51:48,115 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1246 Valid, 1017 Invalid, 1009 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [102 Valid, 907 Invalid, 0 Unknown, 0 Unchecked, 4.4s Time] [2023-11-24 23:51:48,143 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1532 states. [2023-11-24 23:51:48,282 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1532 to 1278. [2023-11-24 23:51:48,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1278 states, 642 states have (on average 2.1728971962616823) internal successors, (1395), 1268 states have internal predecessors, (1395), 13 states have call successors, (13), 3 states have call predecessors, (13), 2 states have return successors, (11), 7 states have call predecessors, (11), 11 states have call successors, (11) [2023-11-24 23:51:48,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1278 states to 1278 states and 1419 transitions. [2023-11-24 23:51:48,296 INFO L78 Accepts]: Start accepts. Automaton has 1278 states and 1419 transitions. Word has length 4 [2023-11-24 23:51:48,297 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 23:51:48,297 INFO L495 AbstractCegarLoop]: Abstraction has 1278 states and 1419 transitions. [2023-11-24 23:51:48,297 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 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 23:51:48,298 INFO L276 IsEmpty]: Start isEmpty. Operand 1278 states and 1419 transitions. [2023-11-24 23:51:48,298 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2023-11-24 23:51:48,299 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:51:48,299 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2023-11-24 23:51:48,309 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_274cfc7e-7d4a-4a49-8bc4-7eee5ce11a53/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)] Forceful destruction successful, exit code 0 [2023-11-24 23:51:48,501 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_274cfc7e-7d4a-4a49-8bc4-7eee5ce11a53/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 23:51:48,502 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 725 more)] === [2023-11-24 23:51:48,503 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:51:48,504 INFO L85 PathProgramCache]: Analyzing trace with hash 69411207, now seen corresponding path program 1 times [2023-11-24 23:51:48,504 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-24 23:51:48,505 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1239768783] [2023-11-24 23:51:48,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:51:48,505 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 23:51:48,506 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_274cfc7e-7d4a-4a49-8bc4-7eee5ce11a53/bin/utaipan-verify-SwPr7d2a91/mathsat [2023-11-24 23:51:48,507 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_274cfc7e-7d4a-4a49-8bc4-7eee5ce11a53/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 23:51:48,513 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_274cfc7e-7d4a-4a49-8bc4-7eee5ce11a53/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 23:51:48,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:51:48,686 INFO L262 TraceCheckSpWp]: Trace formula consists of 37 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-24 23:51:48,690 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 23:51:48,711 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-11-24 23:51:48,745 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 23:51:48,746 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-24 23:51:48,746 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-24 23:51:48,752 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1239768783] [2023-11-24 23:51:48,754 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1239768783] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 23:51:48,755 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 23:51:48,755 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-24 23:51:48,757 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [184809374] [2023-11-24 23:51:48,757 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 23:51:48,760 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-24 23:51:48,760 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-24 23:51:48,761 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-24 23:51:48,761 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-24 23:51:48,762 INFO L87 Difference]: Start difference. First operand 1278 states and 1419 transitions. Second operand has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 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 23:51:55,413 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 23:51:55,413 INFO L93 Difference]: Finished difference Result 1749 states and 1940 transitions. [2023-11-24 23:51:55,414 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-24 23:51:55,415 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 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 4 [2023-11-24 23:51:55,415 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 23:51:55,427 INFO L225 Difference]: With dead ends: 1749 [2023-11-24 23:51:55,427 INFO L226 Difference]: Without dead ends: 1749 [2023-11-24 23:51:55,428 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 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 23:51:55,430 INFO L413 NwaCegarLoop]: 1109 mSDtfsCounter, 675 mSDsluCounter, 491 mSDsCounter, 0 mSdLazyCounter, 1044 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 680 SdHoareTripleChecker+Valid, 1600 SdHoareTripleChecker+Invalid, 1067 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 1044 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.5s IncrementalHoareTripleChecker+Time [2023-11-24 23:51:55,431 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [680 Valid, 1600 Invalid, 1067 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 1044 Invalid, 0 Unknown, 0 Unchecked, 6.5s Time] [2023-11-24 23:51:55,439 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1749 states. [2023-11-24 23:51:55,471 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1749 to 1401. [2023-11-24 23:51:55,474 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1401 states, 775 states have (on average 2.152258064516129) internal successors, (1668), 1391 states have internal predecessors, (1668), 13 states have call successors, (13), 3 states have call predecessors, (13), 2 states have return successors, (11), 7 states have call predecessors, (11), 11 states have call successors, (11) [2023-11-24 23:51:55,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1401 states to 1401 states and 1692 transitions. [2023-11-24 23:51:55,483 INFO L78 Accepts]: Start accepts. Automaton has 1401 states and 1692 transitions. Word has length 4 [2023-11-24 23:51:55,483 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 23:51:55,483 INFO L495 AbstractCegarLoop]: Abstraction has 1401 states and 1692 transitions. [2023-11-24 23:51:55,483 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 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 23:51:55,484 INFO L276 IsEmpty]: Start isEmpty. Operand 1401 states and 1692 transitions. [2023-11-24 23:51:55,484 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2023-11-24 23:51:55,484 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:51:55,484 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2023-11-24 23:51:55,494 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_274cfc7e-7d4a-4a49-8bc4-7eee5ce11a53/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)] Forceful destruction successful, exit code 0 [2023-11-24 23:51:55,689 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_274cfc7e-7d4a-4a49-8bc4-7eee5ce11a53/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 23:51:55,689 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr640REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 725 more)] === [2023-11-24 23:51:55,690 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:51:55,690 INFO L85 PathProgramCache]: Analyzing trace with hash -2141528635, now seen corresponding path program 1 times [2023-11-24 23:51:55,690 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-24 23:51:55,690 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1458070904] [2023-11-24 23:51:55,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:51:55,691 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 23:51:55,691 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_274cfc7e-7d4a-4a49-8bc4-7eee5ce11a53/bin/utaipan-verify-SwPr7d2a91/mathsat [2023-11-24 23:51:55,692 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_274cfc7e-7d4a-4a49-8bc4-7eee5ce11a53/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 23:51:55,695 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_274cfc7e-7d4a-4a49-8bc4-7eee5ce11a53/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 23:51:55,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:51:55,824 INFO L262 TraceCheckSpWp]: Trace formula consists of 30 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-24 23:51:55,826 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 23:51:55,835 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 23:51:55,836 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-24 23:51:55,836 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-24 23:51:55,836 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1458070904] [2023-11-24 23:51:55,836 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1458070904] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 23:51:55,837 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 23:51:55,837 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-24 23:51:55,837 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1514829606] [2023-11-24 23:51:55,837 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 23:51:55,838 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-24 23:51:55,838 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-24 23:51:55,838 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-24 23:51:55,839 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-24 23:51:55,839 INFO L87 Difference]: Start difference. First operand 1401 states and 1692 transitions. Second operand has 3 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 2 states have internal predecessors, (5), 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 23:51:58,007 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 23:51:58,007 INFO L93 Difference]: Finished difference Result 2786 states and 3368 transitions. [2023-11-24 23:51:58,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-24 23:51:58,010 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 2 states have internal predecessors, (5), 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 5 [2023-11-24 23:51:58,010 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 23:51:58,025 INFO L225 Difference]: With dead ends: 2786 [2023-11-24 23:51:58,025 INFO L226 Difference]: Without dead ends: 2786 [2023-11-24 23:51:58,026 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 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 23:51:58,027 INFO L413 NwaCegarLoop]: 1359 mSDtfsCounter, 1243 mSDsluCounter, 1132 mSDsCounter, 0 mSdLazyCounter, 329 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1254 SdHoareTripleChecker+Valid, 2491 SdHoareTripleChecker+Invalid, 331 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 329 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2023-11-24 23:51:58,027 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1254 Valid, 2491 Invalid, 331 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 329 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2023-11-24 23:51:58,033 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2786 states. [2023-11-24 23:51:58,068 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2786 to 1403. [2023-11-24 23:51:58,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1403 states, 777 states have (on average 2.1492921492921493) internal successors, (1670), 1393 states have internal predecessors, (1670), 13 states have call successors, (13), 3 states have call predecessors, (13), 2 states have return successors, (11), 7 states have call predecessors, (11), 11 states have call successors, (11) [2023-11-24 23:51:58,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1403 states to 1403 states and 1694 transitions. [2023-11-24 23:51:58,078 INFO L78 Accepts]: Start accepts. Automaton has 1403 states and 1694 transitions. Word has length 5 [2023-11-24 23:51:58,079 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 23:51:58,079 INFO L495 AbstractCegarLoop]: Abstraction has 1403 states and 1694 transitions. [2023-11-24 23:51:58,079 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 2 states have internal predecessors, (5), 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 23:51:58,079 INFO L276 IsEmpty]: Start isEmpty. Operand 1403 states and 1694 transitions. [2023-11-24 23:51:58,080 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2023-11-24 23:51:58,080 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:51:58,080 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 23:51:58,094 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_274cfc7e-7d4a-4a49-8bc4-7eee5ce11a53/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 23:51:58,294 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_274cfc7e-7d4a-4a49-8bc4-7eee5ce11a53/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 23:51:58,295 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 725 more)] === [2023-11-24 23:51:58,296 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:51:58,296 INFO L85 PathProgramCache]: Analyzing trace with hash -1971456944, now seen corresponding path program 1 times [2023-11-24 23:51:58,296 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-24 23:51:58,297 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [696665263] [2023-11-24 23:51:58,297 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:51:58,297 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 23:51:58,297 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_274cfc7e-7d4a-4a49-8bc4-7eee5ce11a53/bin/utaipan-verify-SwPr7d2a91/mathsat [2023-11-24 23:51:58,298 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_274cfc7e-7d4a-4a49-8bc4-7eee5ce11a53/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 23:51:58,299 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_274cfc7e-7d4a-4a49-8bc4-7eee5ce11a53/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 23:51:58,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:51:58,490 INFO L262 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-24 23:51:58,493 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 23:51:58,505 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 23:51:58,505 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-24 23:51:58,505 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-24 23:51:58,507 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [696665263] [2023-11-24 23:51:58,509 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [696665263] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 23:51:58,510 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 23:51:58,510 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-24 23:51:58,510 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1761907540] [2023-11-24 23:51:58,510 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 23:51:58,511 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-24 23:51:58,511 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-24 23:51:58,511 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-24 23:51:58,511 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-24 23:51:58,512 INFO L87 Difference]: Start difference. First operand 1403 states and 1694 transitions. Second operand has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 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 23:51:59,983 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 23:51:59,983 INFO L93 Difference]: Finished difference Result 1364 states and 1654 transitions. [2023-11-24 23:51:59,990 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-24 23:51:59,990 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 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 10 [2023-11-24 23:51:59,990 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 23:51:59,999 INFO L225 Difference]: With dead ends: 1364 [2023-11-24 23:51:59,999 INFO L226 Difference]: Without dead ends: 1364 [2023-11-24 23:51:59,999 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 8 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 23:52:00,001 INFO L413 NwaCegarLoop]: 1092 mSDtfsCounter, 70 mSDsluCounter, 1043 mSDsCounter, 0 mSdLazyCounter, 282 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 70 SdHoareTripleChecker+Valid, 2135 SdHoareTripleChecker+Invalid, 282 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 282 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2023-11-24 23:52:00,005 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [70 Valid, 2135 Invalid, 282 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 282 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2023-11-24 23:52:00,011 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1364 states. [2023-11-24 23:52:00,037 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1364 to 1364. [2023-11-24 23:52:00,039 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1364 states, 762 states have (on average 2.1391076115485563) internal successors, (1630), 1354 states have internal predecessors, (1630), 13 states have call successors, (13), 3 states have call predecessors, (13), 2 states have return successors, (11), 7 states have call predecessors, (11), 11 states have call successors, (11) [2023-11-24 23:52:00,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1364 states to 1364 states and 1654 transitions. [2023-11-24 23:52:00,047 INFO L78 Accepts]: Start accepts. Automaton has 1364 states and 1654 transitions. Word has length 10 [2023-11-24 23:52:00,048 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 23:52:00,048 INFO L495 AbstractCegarLoop]: Abstraction has 1364 states and 1654 transitions. [2023-11-24 23:52:00,048 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 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 23:52:00,048 INFO L276 IsEmpty]: Start isEmpty. Operand 1364 states and 1654 transitions. [2023-11-24 23:52:00,049 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2023-11-24 23:52:00,049 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:52:00,049 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 23:52:00,062 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_274cfc7e-7d4a-4a49-8bc4-7eee5ce11a53/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 23:52:00,252 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_274cfc7e-7d4a-4a49-8bc4-7eee5ce11a53/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 23:52:00,252 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr28REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 725 more)] === [2023-11-24 23:52:00,253 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:52:00,253 INFO L85 PathProgramCache]: Analyzing trace with hash -489549526, now seen corresponding path program 1 times [2023-11-24 23:52:00,253 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-24 23:52:00,253 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [469980555] [2023-11-24 23:52:00,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:52:00,254 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 23:52:00,254 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_274cfc7e-7d4a-4a49-8bc4-7eee5ce11a53/bin/utaipan-verify-SwPr7d2a91/mathsat [2023-11-24 23:52:00,255 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_274cfc7e-7d4a-4a49-8bc4-7eee5ce11a53/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 23:52:00,256 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_274cfc7e-7d4a-4a49-8bc4-7eee5ce11a53/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 23:52:00,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:52:00,486 INFO L262 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-24 23:52:00,489 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 23:52:00,509 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 23:52:00,510 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-24 23:52:00,510 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-24 23:52:00,510 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [469980555] [2023-11-24 23:52:00,510 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [469980555] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 23:52:00,510 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 23:52:00,511 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-24 23:52:00,511 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [170187995] [2023-11-24 23:52:00,511 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 23:52:00,511 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-24 23:52:00,511 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-24 23:52:00,512 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-24 23:52:00,512 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-24 23:52:00,512 INFO L87 Difference]: Start difference. First operand 1364 states and 1654 transitions. Second operand has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 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 23:52:02,495 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 23:52:02,496 INFO L93 Difference]: Finished difference Result 1350 states and 1633 transitions. [2023-11-24 23:52:02,498 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-24 23:52:02,498 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 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 23:52:02,498 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 23:52:02,506 INFO L225 Difference]: With dead ends: 1350 [2023-11-24 23:52:02,506 INFO L226 Difference]: Without dead ends: 1350 [2023-11-24 23:52:02,506 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 9 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 23:52:02,507 INFO L413 NwaCegarLoop]: 1061 mSDtfsCounter, 58 mSDsluCounter, 2098 mSDsCounter, 0 mSdLazyCounter, 428 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 58 SdHoareTripleChecker+Valid, 3159 SdHoareTripleChecker+Invalid, 450 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 428 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2023-11-24 23:52:02,508 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [58 Valid, 3159 Invalid, 450 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 428 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2023-11-24 23:52:02,511 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1350 states. [2023-11-24 23:52:02,535 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1350 to 1349. [2023-11-24 23:52:02,537 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1349 states, 761 states have (on average 2.1130091984231276) internal successors, (1608), 1339 states have internal predecessors, (1608), 13 states have call successors, (13), 3 states have call predecessors, (13), 2 states have return successors, (11), 7 states have call predecessors, (11), 11 states have call successors, (11) [2023-11-24 23:52:02,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1349 states to 1349 states and 1632 transitions. [2023-11-24 23:52:02,544 INFO L78 Accepts]: Start accepts. Automaton has 1349 states and 1632 transitions. Word has length 12 [2023-11-24 23:52:02,544 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 23:52:02,545 INFO L495 AbstractCegarLoop]: Abstraction has 1349 states and 1632 transitions. [2023-11-24 23:52:02,545 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 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 23:52:02,545 INFO L276 IsEmpty]: Start isEmpty. Operand 1349 states and 1632 transitions. [2023-11-24 23:52:02,546 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2023-11-24 23:52:02,546 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:52:02,546 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] [2023-11-24 23:52:02,555 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_274cfc7e-7d4a-4a49-8bc4-7eee5ce11a53/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 23:52:02,749 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_274cfc7e-7d4a-4a49-8bc4-7eee5ce11a53/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 23:52:02,750 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr42REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 725 more)] === [2023-11-24 23:52:02,750 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:52:02,750 INFO L85 PathProgramCache]: Analyzing trace with hash 2073180440, now seen corresponding path program 1 times [2023-11-24 23:52:02,751 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-24 23:52:02,751 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1852699678] [2023-11-24 23:52:02,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:52:02,751 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 23:52:02,751 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_274cfc7e-7d4a-4a49-8bc4-7eee5ce11a53/bin/utaipan-verify-SwPr7d2a91/mathsat [2023-11-24 23:52:02,752 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_274cfc7e-7d4a-4a49-8bc4-7eee5ce11a53/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 23:52:02,753 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_274cfc7e-7d4a-4a49-8bc4-7eee5ce11a53/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 23:52:03,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:52:03,018 INFO L262 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-24 23:52:03,022 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 23:52:03,036 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2023-11-24 23:52:03,126 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 23:52:03,127 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-24 23:52:03,127 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-24 23:52:03,127 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1852699678] [2023-11-24 23:52:03,127 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1852699678] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 23:52:03,128 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 23:52:03,128 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-24 23:52:03,128 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [154597789] [2023-11-24 23:52:03,128 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 23:52:03,128 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-24 23:52:03,128 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-24 23:52:03,129 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-24 23:52:03,129 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-24 23:52:03,129 INFO L87 Difference]: Start difference. First operand 1349 states and 1632 transitions. Second operand has 4 states, 3 states have (on average 8.666666666666666) internal successors, (26), 4 states have internal predecessors, (26), 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 23:52:07,362 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 23:52:07,362 INFO L93 Difference]: Finished difference Result 1600 states and 1868 transitions. [2023-11-24 23:52:07,365 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-24 23:52:07,365 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 8.666666666666666) internal successors, (26), 4 states have internal predecessors, (26), 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 26 [2023-11-24 23:52:07,366 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 23:52:07,375 INFO L225 Difference]: With dead ends: 1600 [2023-11-24 23:52:07,376 INFO L226 Difference]: Without dead ends: 1600 [2023-11-24 23:52:07,376 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 23 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 23:52:07,377 INFO L413 NwaCegarLoop]: 540 mSDtfsCounter, 1170 mSDsluCounter, 709 mSDsCounter, 0 mSdLazyCounter, 1529 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1181 SdHoareTripleChecker+Valid, 1249 SdHoareTripleChecker+Invalid, 1543 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 1529 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.2s IncrementalHoareTripleChecker+Time [2023-11-24 23:52:07,377 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1181 Valid, 1249 Invalid, 1543 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 1529 Invalid, 0 Unknown, 0 Unchecked, 4.2s Time] [2023-11-24 23:52:07,382 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1600 states. [2023-11-24 23:52:07,408 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1600 to 1345. [2023-11-24 23:52:07,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1345 states, 761 states have (on average 2.107752956636005) internal successors, (1604), 1335 states have internal predecessors, (1604), 13 states have call successors, (13), 3 states have call predecessors, (13), 2 states have return successors, (11), 7 states have call predecessors, (11), 11 states have call successors, (11) [2023-11-24 23:52:07,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1345 states to 1345 states and 1628 transitions. [2023-11-24 23:52:07,418 INFO L78 Accepts]: Start accepts. Automaton has 1345 states and 1628 transitions. Word has length 26 [2023-11-24 23:52:07,418 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 23:52:07,419 INFO L495 AbstractCegarLoop]: Abstraction has 1345 states and 1628 transitions. [2023-11-24 23:52:07,419 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 8.666666666666666) internal successors, (26), 4 states have internal predecessors, (26), 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 23:52:07,419 INFO L276 IsEmpty]: Start isEmpty. Operand 1345 states and 1628 transitions. [2023-11-24 23:52:07,420 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2023-11-24 23:52:07,420 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:52:07,420 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] [2023-11-24 23:52:07,430 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_274cfc7e-7d4a-4a49-8bc4-7eee5ce11a53/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 23:52:07,624 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_274cfc7e-7d4a-4a49-8bc4-7eee5ce11a53/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 23:52:07,624 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr43REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 725 more)] === [2023-11-24 23:52:07,624 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:52:07,625 INFO L85 PathProgramCache]: Analyzing trace with hash 2073180441, now seen corresponding path program 1 times [2023-11-24 23:52:07,625 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-24 23:52:07,625 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1859331752] [2023-11-24 23:52:07,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:52:07,626 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 23:52:07,626 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_274cfc7e-7d4a-4a49-8bc4-7eee5ce11a53/bin/utaipan-verify-SwPr7d2a91/mathsat [2023-11-24 23:52:07,627 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_274cfc7e-7d4a-4a49-8bc4-7eee5ce11a53/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 23:52:07,668 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_274cfc7e-7d4a-4a49-8bc4-7eee5ce11a53/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 23:52:07,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:52:07,845 INFO L262 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-24 23:52:07,848 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 23:52:07,856 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-11-24 23:52:08,084 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 23:52:08,084 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-24 23:52:08,084 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-24 23:52:08,084 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1859331752] [2023-11-24 23:52:08,085 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1859331752] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 23:52:08,085 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 23:52:08,085 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-24 23:52:08,085 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1241043651] [2023-11-24 23:52:08,086 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 23:52:08,086 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-24 23:52:08,086 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-24 23:52:08,087 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-24 23:52:08,087 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-24 23:52:08,087 INFO L87 Difference]: Start difference. First operand 1345 states and 1628 transitions. Second operand has 4 states, 3 states have (on average 8.666666666666666) internal successors, (26), 4 states have internal predecessors, (26), 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)