./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/weaver/loop-tiling-eq.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 9bd2c7ff Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_122fbe76-dbc3-4200-ba17-39c3428288c3/bin/utaipan-verify-t7M7D8N6sZ/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_122fbe76-dbc3-4200-ba17-39c3428288c3/bin/utaipan-verify-t7M7D8N6sZ/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_122fbe76-dbc3-4200-ba17-39c3428288c3/bin/utaipan-verify-t7M7D8N6sZ/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_122fbe76-dbc3-4200-ba17-39c3428288c3/bin/utaipan-verify-t7M7D8N6sZ/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/weaver/loop-tiling-eq.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_122fbe76-dbc3-4200-ba17-39c3428288c3/bin/utaipan-verify-t7M7D8N6sZ/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_122fbe76-dbc3-4200-ba17-39c3428288c3/bin/utaipan-verify-t7M7D8N6sZ --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 2c579ed20cf5b381709dcc4ef9fbcf839f80c68ac017a29b947b11bd3a57dd56 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 04:59:16,607 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 04:59:16,731 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_122fbe76-dbc3-4200-ba17-39c3428288c3/bin/utaipan-verify-t7M7D8N6sZ/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf [2023-11-19 04:59:16,737 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 04:59:16,738 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-19 04:59:16,762 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 04:59:16,763 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-19 04:59:16,764 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-19 04:59:16,764 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 04:59:16,765 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-19 04:59:16,766 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-19 04:59:16,766 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-19 04:59:16,767 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-19 04:59:16,767 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-19 04:59:16,768 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-19 04:59:16,768 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-19 04:59:16,769 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-19 04:59:16,769 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-19 04:59:16,770 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-19 04:59:16,770 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-19 04:59:16,771 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-19 04:59:16,772 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-19 04:59:16,772 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-19 04:59:16,773 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-19 04:59:16,773 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 04:59:16,774 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-19 04:59:16,777 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-19 04:59:16,777 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-19 04:59:16,778 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 04:59:16,778 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-19 04:59:16,779 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-19 04:59:16,780 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-19 04:59:16,780 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 04:59:16,780 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-19 04:59:16,781 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-19 04:59:16,781 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-19 04:59:16,781 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 04:59:16,781 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 04:59:16,782 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-19 04:59:16,782 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 04:59:16,782 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 04:59:16,783 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 04:59:16,783 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-19 04:59:16,783 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-19 04:59:16,784 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-19 04:59:16,784 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-19 04:59:16,784 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_122fbe76-dbc3-4200-ba17-39c3428288c3/bin/utaipan-verify-t7M7D8N6sZ/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_122fbe76-dbc3-4200-ba17-39c3428288c3/bin/utaipan-verify-t7M7D8N6sZ Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2c579ed20cf5b381709dcc4ef9fbcf839f80c68ac017a29b947b11bd3a57dd56 [2023-11-19 04:59:17,114 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 04:59:17,153 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 04:59:17,156 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 04:59:17,157 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 04:59:17,159 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 04:59:17,160 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_122fbe76-dbc3-4200-ba17-39c3428288c3/bin/utaipan-verify-t7M7D8N6sZ/../../sv-benchmarks/c/weaver/loop-tiling-eq.wvr.c [2023-11-19 04:59:20,329 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 04:59:20,584 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 04:59:20,584 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_122fbe76-dbc3-4200-ba17-39c3428288c3/sv-benchmarks/c/weaver/loop-tiling-eq.wvr.c [2023-11-19 04:59:20,598 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_122fbe76-dbc3-4200-ba17-39c3428288c3/bin/utaipan-verify-t7M7D8N6sZ/data/8fea903b0/3bd158a7f2c64e94bd61af55d87082a4/FLAG295ca417d [2023-11-19 04:59:20,626 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_122fbe76-dbc3-4200-ba17-39c3428288c3/bin/utaipan-verify-t7M7D8N6sZ/data/8fea903b0/3bd158a7f2c64e94bd61af55d87082a4 [2023-11-19 04:59:20,637 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 04:59:20,639 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 04:59:20,641 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 04:59:20,642 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 04:59:20,649 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 04:59:20,650 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 04:59:20" (1/1) ... [2023-11-19 04:59:20,652 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@412733ac and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:59:20, skipping insertion in model container [2023-11-19 04:59:20,652 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 04:59:20" (1/1) ... [2023-11-19 04:59:20,696 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 04:59:21,006 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 04:59:21,031 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) [2023-11-19 04:59:21,032 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@6c9124b7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:59:21, skipping insertion in model container [2023-11-19 04:59:21,032 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 04:59:21,033 INFO L186 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2023-11-19 04:59:21,036 INFO L158 Benchmark]: Toolchain (without parser) took 395.34ms. Allocated memory is still 172.0MB. Free memory was 138.9MB in the beginning and 128.6MB in the end (delta: 10.3MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-11-19 04:59:21,037 INFO L158 Benchmark]: CDTParser took 0.26ms. Allocated memory is still 117.4MB. Free memory is still 89.0MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-19 04:59:21,038 INFO L158 Benchmark]: CACSL2BoogieTranslator took 391.47ms. Allocated memory is still 172.0MB. Free memory was 138.9MB in the beginning and 128.6MB in the end (delta: 10.3MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-11-19 04:59:21,041 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26ms. Allocated memory is still 117.4MB. Free memory is still 89.0MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 391.47ms. Allocated memory is still 172.0MB. Free memory was 138.9MB in the beginning and 128.6MB in the end (delta: 10.3MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 79]: Unsupported Syntax Found a cast between two array/pointer types of different sizes while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_122fbe76-dbc3-4200-ba17-39c3428288c3/bin/utaipan-verify-t7M7D8N6sZ/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_122fbe76-dbc3-4200-ba17-39c3428288c3/bin/utaipan-verify-t7M7D8N6sZ/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_122fbe76-dbc3-4200-ba17-39c3428288c3/bin/utaipan-verify-t7M7D8N6sZ/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_122fbe76-dbc3-4200-ba17-39c3428288c3/bin/utaipan-verify-t7M7D8N6sZ/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/weaver/loop-tiling-eq.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_122fbe76-dbc3-4200-ba17-39c3428288c3/bin/utaipan-verify-t7M7D8N6sZ/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_122fbe76-dbc3-4200-ba17-39c3428288c3/bin/utaipan-verify-t7M7D8N6sZ --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 2c579ed20cf5b381709dcc4ef9fbcf839f80c68ac017a29b947b11bd3a57dd56 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 04:59:23,568 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 04:59:23,699 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_122fbe76-dbc3-4200-ba17-39c3428288c3/bin/utaipan-verify-t7M7D8N6sZ/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf [2023-11-19 04:59:23,707 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 04:59:23,708 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-19 04:59:23,773 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 04:59:23,774 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-19 04:59:23,775 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-19 04:59:23,776 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 04:59:23,777 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-19 04:59:23,778 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-19 04:59:23,779 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-19 04:59:23,779 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-19 04:59:23,780 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-19 04:59:23,781 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-19 04:59:23,781 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-19 04:59:23,782 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-19 04:59:23,783 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-19 04:59:23,784 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 04:59:23,784 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-19 04:59:23,785 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-19 04:59:23,786 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-19 04:59:23,786 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 04:59:23,787 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-19 04:59:23,787 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-19 04:59:23,788 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-19 04:59:23,788 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 04:59:23,789 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-19 04:59:23,789 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-11-19 04:59:23,790 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-11-19 04:59:23,790 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-19 04:59:23,791 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-19 04:59:23,791 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 04:59:23,792 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 04:59:23,792 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-19 04:59:23,793 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-19 04:59:23,793 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 04:59:23,793 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 04:59:23,794 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 04:59:23,794 INFO L153 SettingsManager]: * Trace refinement strategy=WALRUS [2023-11-19 04:59:23,794 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-11-19 04:59:23,795 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-19 04:59:23,795 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-19 04:59:23,796 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_122fbe76-dbc3-4200-ba17-39c3428288c3/bin/utaipan-verify-t7M7D8N6sZ/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_122fbe76-dbc3-4200-ba17-39c3428288c3/bin/utaipan-verify-t7M7D8N6sZ Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2c579ed20cf5b381709dcc4ef9fbcf839f80c68ac017a29b947b11bd3a57dd56 [2023-11-19 04:59:24,199 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 04:59:24,225 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 04:59:24,228 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 04:59:24,230 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 04:59:24,230 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 04:59:24,232 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_122fbe76-dbc3-4200-ba17-39c3428288c3/bin/utaipan-verify-t7M7D8N6sZ/../../sv-benchmarks/c/weaver/loop-tiling-eq.wvr.c [2023-11-19 04:59:27,501 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 04:59:27,718 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 04:59:27,718 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_122fbe76-dbc3-4200-ba17-39c3428288c3/sv-benchmarks/c/weaver/loop-tiling-eq.wvr.c [2023-11-19 04:59:27,731 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_122fbe76-dbc3-4200-ba17-39c3428288c3/bin/utaipan-verify-t7M7D8N6sZ/data/5c4363492/e8e0172e880f43cea598b8ce63abb1d8/FLAG005efec17 [2023-11-19 04:59:27,752 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_122fbe76-dbc3-4200-ba17-39c3428288c3/bin/utaipan-verify-t7M7D8N6sZ/data/5c4363492/e8e0172e880f43cea598b8ce63abb1d8 [2023-11-19 04:59:27,764 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 04:59:27,768 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 04:59:27,771 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 04:59:27,771 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 04:59:27,776 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 04:59:27,777 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 04:59:27" (1/1) ... [2023-11-19 04:59:27,778 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5d69f468 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:59:27, skipping insertion in model container [2023-11-19 04:59:27,778 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 04:59:27" (1/1) ... [2023-11-19 04:59:27,811 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 04:59:28,076 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 04:59:28,103 INFO L199 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2023-11-19 04:59:28,119 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 04:59:28,160 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 04:59:28,172 INFO L202 MainTranslator]: Completed pre-run [2023-11-19 04:59:28,245 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 04:59:28,275 INFO L206 MainTranslator]: Completed translation [2023-11-19 04:59:28,276 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:59:28 WrapperNode [2023-11-19 04:59:28,277 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 04:59:28,278 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-19 04:59:28,279 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-19 04:59:28,279 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-19 04:59:28,288 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:59:28" (1/1) ... [2023-11-19 04:59:28,315 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:59:28" (1/1) ... [2023-11-19 04:59:28,368 INFO L138 Inliner]: procedures = 27, calls = 42, calls flagged for inlining = 14, calls inlined = 18, statements flattened = 191 [2023-11-19 04:59:28,368 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-19 04:59:28,370 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-19 04:59:28,370 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-19 04:59:28,370 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-19 04:59:28,382 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:59:28" (1/1) ... [2023-11-19 04:59:28,383 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:59:28" (1/1) ... [2023-11-19 04:59:28,394 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:59:28" (1/1) ... [2023-11-19 04:59:28,403 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:59:28" (1/1) ... [2023-11-19 04:59:28,435 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:59:28" (1/1) ... [2023-11-19 04:59:28,441 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:59:28" (1/1) ... [2023-11-19 04:59:28,457 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:59:28" (1/1) ... [2023-11-19 04:59:28,460 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:59:28" (1/1) ... [2023-11-19 04:59:28,466 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-19 04:59:28,467 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-19 04:59:28,468 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-19 04:59:28,468 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-19 04:59:28,469 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:59:28" (1/1) ... [2023-11-19 04:59:28,476 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 04:59:28,493 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_122fbe76-dbc3-4200-ba17-39c3428288c3/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 04:59:28,508 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_122fbe76-dbc3-4200-ba17-39c3428288c3/bin/utaipan-verify-t7M7D8N6sZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-19 04:59:28,518 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_122fbe76-dbc3-4200-ba17-39c3428288c3/bin/utaipan-verify-t7M7D8N6sZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-19 04:59:28,553 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-19 04:59:28,553 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2023-11-19 04:59:28,553 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-11-19 04:59:28,553 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-19 04:59:28,554 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2023-11-19 04:59:28,554 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-11-19 04:59:28,554 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-11-19 04:59:28,554 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-11-19 04:59:28,554 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-11-19 04:59:28,555 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-11-19 04:59:28,555 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-19 04:59:28,555 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-19 04:59:28,555 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-19 04:59:28,556 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-19 04:59:28,556 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2023-11-19 04:59:28,558 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-19 04:59:28,720 INFO L236 CfgBuilder]: Building ICFG [2023-11-19 04:59:28,722 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-19 04:59:29,709 INFO L277 CfgBuilder]: Performing block encoding [2023-11-19 04:59:29,731 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-19 04:59:29,731 INFO L302 CfgBuilder]: Removed 7 assume(true) statements. [2023-11-19 04:59:29,741 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 04:59:29 BoogieIcfgContainer [2023-11-19 04:59:29,741 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-19 04:59:29,743 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-19 04:59:29,743 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-19 04:59:29,746 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-19 04:59:29,747 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 04:59:27" (1/3) ... [2023-11-19 04:59:29,747 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@72b5e904 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 04:59:29, skipping insertion in model container [2023-11-19 04:59:29,747 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:59:28" (2/3) ... [2023-11-19 04:59:29,748 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@72b5e904 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 04:59:29, skipping insertion in model container [2023-11-19 04:59:29,748 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 04:59:29" (3/3) ... [2023-11-19 04:59:29,749 INFO L112 eAbstractionObserver]: Analyzing ICFG loop-tiling-eq.wvr.c [2023-11-19 04:59:29,775 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-19 04:59:29,775 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 34 error locations. [2023-11-19 04:59:29,776 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-19 04:59:29,954 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-11-19 04:59:29,993 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2023-11-19 04:59:30,008 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 304 places, 323 transitions, 660 flow [2023-11-19 04:59:30,011 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 304 places, 323 transitions, 660 flow [2023-11-19 04:59:30,013 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 304 places, 323 transitions, 660 flow [2023-11-19 04:59:30,139 INFO L124 PetriNetUnfolderBase]: 26/321 cut-off events. [2023-11-19 04:59:30,139 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-11-19 04:59:30,148 INFO L83 FinitePrefix]: Finished finitePrefix Result has 330 conditions, 321 events. 26/321 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 474 event pairs, 0 based on Foata normal form. 0/261 useless extension candidates. Maximal degree in co-relation 230. Up to 2 conditions per place. [2023-11-19 04:59:30,153 INFO L119 LiptonReduction]: Number of co-enabled transitions 2148