./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/weaver/parallel-parallel-sum-1.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version cf1a7837 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_3f9a92c2-34f9-4f99-bcce-e2cc2b648bf7/bin/utaipan-verify-NcY6lQBIFX/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f9a92c2-34f9-4f99-bcce-e2cc2b648bf7/bin/utaipan-verify-NcY6lQBIFX/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f9a92c2-34f9-4f99-bcce-e2cc2b648bf7/bin/utaipan-verify-NcY6lQBIFX/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f9a92c2-34f9-4f99-bcce-e2cc2b648bf7/bin/utaipan-verify-NcY6lQBIFX/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/weaver/parallel-parallel-sum-1.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f9a92c2-34f9-4f99-bcce-e2cc2b648bf7/bin/utaipan-verify-NcY6lQBIFX/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f9a92c2-34f9-4f99-bcce-e2cc2b648bf7/bin/utaipan-verify-NcY6lQBIFX --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 b1e99af7c76570461a4b0ac70d664412f250ec04f47fd9ca8c0f85236f1348c6 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-cf1a783 [2023-11-12 00:12:17,474 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-12 00:12:17,599 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f9a92c2-34f9-4f99-bcce-e2cc2b648bf7/bin/utaipan-verify-NcY6lQBIFX/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf [2023-11-12 00:12:17,606 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-12 00:12:17,607 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-12 00:12:17,645 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-12 00:12:17,646 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-12 00:12:17,646 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-12 00:12:17,647 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-12 00:12:17,652 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-12 00:12:17,653 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-12 00:12:17,654 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-12 00:12:17,655 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-12 00:12:17,657 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-12 00:12:17,657 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-12 00:12:17,658 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-12 00:12:17,658 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-12 00:12:17,659 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-12 00:12:17,659 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-12 00:12:17,660 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-12 00:12:17,660 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-12 00:12:17,661 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-12 00:12:17,662 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-12 00:12:17,663 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-12 00:12:17,664 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-12 00:12:17,664 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-12 00:12:17,665 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-12 00:12:17,665 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-12 00:12:17,666 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-12 00:12:17,666 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-12 00:12:17,667 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-12 00:12:17,668 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-12 00:12:17,668 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-12 00:12:17,669 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-12 00:12:17,669 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-12 00:12:17,669 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-12 00:12:17,670 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-12 00:12:17,670 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-12 00:12:17,670 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-12 00:12:17,671 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-12 00:12:17,671 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-12 00:12:17,671 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-12 00:12:17,672 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-12 00:12:17,672 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-12 00:12:17,673 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-12 00:12:17,673 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-12 00:12:17,673 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_3f9a92c2-34f9-4f99-bcce-e2cc2b648bf7/bin/utaipan-verify-NcY6lQBIFX/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f9a92c2-34f9-4f99-bcce-e2cc2b648bf7/bin/utaipan-verify-NcY6lQBIFX Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b1e99af7c76570461a4b0ac70d664412f250ec04f47fd9ca8c0f85236f1348c6 [2023-11-12 00:12:17,999 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-12 00:12:18,037 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-12 00:12:18,040 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-12 00:12:18,042 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-12 00:12:18,043 INFO L274 PluginConnector]: CDTParser initialized [2023-11-12 00:12:18,046 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f9a92c2-34f9-4f99-bcce-e2cc2b648bf7/bin/utaipan-verify-NcY6lQBIFX/../../sv-benchmarks/c/weaver/parallel-parallel-sum-1.wvr.c [2023-11-12 00:12:21,527 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-12 00:12:21,750 INFO L384 CDTParser]: Found 1 translation units. [2023-11-12 00:12:21,751 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f9a92c2-34f9-4f99-bcce-e2cc2b648bf7/sv-benchmarks/c/weaver/parallel-parallel-sum-1.wvr.c [2023-11-12 00:12:21,761 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f9a92c2-34f9-4f99-bcce-e2cc2b648bf7/bin/utaipan-verify-NcY6lQBIFX/data/e0a82d05a/ff1caa71a96444c08b9ce8579ddacfa1/FLAG456ae065b [2023-11-12 00:12:21,779 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f9a92c2-34f9-4f99-bcce-e2cc2b648bf7/bin/utaipan-verify-NcY6lQBIFX/data/e0a82d05a/ff1caa71a96444c08b9ce8579ddacfa1 [2023-11-12 00:12:21,782 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-12 00:12:21,784 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-12 00:12:21,785 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-12 00:12:21,786 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-12 00:12:21,792 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-12 00:12:21,793 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 12:12:21" (1/1) ... [2023-11-12 00:12:21,794 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7fb9eb20 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:12:21, skipping insertion in model container [2023-11-12 00:12:21,794 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 12:12:21" (1/1) ... [2023-11-12 00:12:21,824 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-12 00:12:22,027 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 00:12:22,043 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) [2023-11-12 00:12:22,046 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@5a436095 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:12:22, skipping insertion in model container [2023-11-12 00:12:22,046 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-12 00:12:22,047 INFO L186 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2023-11-12 00:12:22,049 INFO L158 Benchmark]: Toolchain (without parser) took 263.88ms. Allocated memory is still 159.4MB. Free memory was 117.5MB in the beginning and 107.1MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-11-12 00:12:22,049 INFO L158 Benchmark]: CDTParser took 0.30ms. Allocated memory is still 113.2MB. Free memory is still 62.4MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-12 00:12:22,050 INFO L158 Benchmark]: CACSL2BoogieTranslator took 261.06ms. Allocated memory is still 159.4MB. Free memory was 117.3MB in the beginning and 107.1MB in the end (delta: 10.2MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-11-12 00:12:22,051 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.30ms. Allocated memory is still 113.2MB. Free memory is still 62.4MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 261.06ms. Allocated memory is still 159.4MB. Free memory was 117.3MB in the beginning and 107.1MB in the end (delta: 10.2MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 145]: 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_3f9a92c2-34f9-4f99-bcce-e2cc2b648bf7/bin/utaipan-verify-NcY6lQBIFX/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f9a92c2-34f9-4f99-bcce-e2cc2b648bf7/bin/utaipan-verify-NcY6lQBIFX/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f9a92c2-34f9-4f99-bcce-e2cc2b648bf7/bin/utaipan-verify-NcY6lQBIFX/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f9a92c2-34f9-4f99-bcce-e2cc2b648bf7/bin/utaipan-verify-NcY6lQBIFX/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/weaver/parallel-parallel-sum-1.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f9a92c2-34f9-4f99-bcce-e2cc2b648bf7/bin/utaipan-verify-NcY6lQBIFX/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f9a92c2-34f9-4f99-bcce-e2cc2b648bf7/bin/utaipan-verify-NcY6lQBIFX --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 b1e99af7c76570461a4b0ac70d664412f250ec04f47fd9ca8c0f85236f1348c6 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-cf1a783 [2023-11-12 00:12:24,643 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-12 00:12:24,722 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f9a92c2-34f9-4f99-bcce-e2cc2b648bf7/bin/utaipan-verify-NcY6lQBIFX/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf [2023-11-12 00:12:24,728 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-12 00:12:24,740 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-12 00:12:24,794 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-12 00:12:24,795 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-12 00:12:24,796 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-12 00:12:24,797 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-12 00:12:24,802 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-12 00:12:24,803 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-12 00:12:24,803 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-12 00:12:24,804 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-12 00:12:24,806 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-12 00:12:24,806 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-12 00:12:24,806 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-12 00:12:24,807 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-12 00:12:24,808 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-12 00:12:24,809 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-12 00:12:24,809 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-12 00:12:24,810 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-12 00:12:24,810 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-12 00:12:24,811 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-12 00:12:24,811 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-12 00:12:24,812 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-12 00:12:24,812 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-12 00:12:24,812 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-12 00:12:24,813 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-12 00:12:24,813 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-11-12 00:12:24,814 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-11-12 00:12:24,814 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-12 00:12:24,814 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-12 00:12:24,815 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-12 00:12:24,815 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-12 00:12:24,815 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-12 00:12:24,815 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-12 00:12:24,816 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-12 00:12:24,816 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-12 00:12:24,816 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-12 00:12:24,816 INFO L153 SettingsManager]: * Trace refinement strategy=WALRUS [2023-11-12 00:12:24,817 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-11-12 00:12:24,817 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-12 00:12:24,817 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-12 00:12:24,818 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_3f9a92c2-34f9-4f99-bcce-e2cc2b648bf7/bin/utaipan-verify-NcY6lQBIFX/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f9a92c2-34f9-4f99-bcce-e2cc2b648bf7/bin/utaipan-verify-NcY6lQBIFX Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b1e99af7c76570461a4b0ac70d664412f250ec04f47fd9ca8c0f85236f1348c6 [2023-11-12 00:12:25,188 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-12 00:12:25,220 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-12 00:12:25,223 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-12 00:12:25,224 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-12 00:12:25,225 INFO L274 PluginConnector]: CDTParser initialized [2023-11-12 00:12:25,227 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f9a92c2-34f9-4f99-bcce-e2cc2b648bf7/bin/utaipan-verify-NcY6lQBIFX/../../sv-benchmarks/c/weaver/parallel-parallel-sum-1.wvr.c [2023-11-12 00:12:28,759 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-12 00:12:29,040 INFO L384 CDTParser]: Found 1 translation units. [2023-11-12 00:12:29,040 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f9a92c2-34f9-4f99-bcce-e2cc2b648bf7/sv-benchmarks/c/weaver/parallel-parallel-sum-1.wvr.c [2023-11-12 00:12:29,050 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f9a92c2-34f9-4f99-bcce-e2cc2b648bf7/bin/utaipan-verify-NcY6lQBIFX/data/d78144a05/19969595006d4d1c8e04a3b08b1a42eb/FLAGe4bdb0a5a [2023-11-12 00:12:29,346 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f9a92c2-34f9-4f99-bcce-e2cc2b648bf7/bin/utaipan-verify-NcY6lQBIFX/data/d78144a05/19969595006d4d1c8e04a3b08b1a42eb [2023-11-12 00:12:29,349 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-12 00:12:29,351 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-12 00:12:29,353 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-12 00:12:29,353 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-12 00:12:29,366 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-12 00:12:29,366 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 12:12:29" (1/1) ... [2023-11-12 00:12:29,367 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@a3f8366 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:12:29, skipping insertion in model container [2023-11-12 00:12:29,368 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 12:12:29" (1/1) ... [2023-11-12 00:12:29,415 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-12 00:12:29,720 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 00:12:29,745 INFO L199 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2023-11-12 00:12:29,757 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-12 00:12:29,808 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 00:12:29,820 INFO L202 MainTranslator]: Completed pre-run [2023-11-12 00:12:29,870 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 00:12:29,922 WARN L672 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-11-12 00:12:29,922 WARN L672 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-11-12 00:12:29,938 INFO L206 MainTranslator]: Completed translation [2023-11-12 00:12:29,939 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:12:29 WrapperNode [2023-11-12 00:12:29,939 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-12 00:12:29,952 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-12 00:12:29,952 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-12 00:12:29,952 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-12 00:12:29,975 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:12:29" (1/1) ... [2023-11-12 00:12:30,005 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:12:29" (1/1) ... [2023-11-12 00:12:30,043 INFO L138 Inliner]: procedures = 29, calls = 69, calls flagged for inlining = 19, calls inlined = 25, statements flattened = 303 [2023-11-12 00:12:30,044 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-12 00:12:30,045 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-12 00:12:30,045 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-12 00:12:30,045 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-12 00:12:30,053 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:12:29" (1/1) ... [2023-11-12 00:12:30,054 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:12:29" (1/1) ... [2023-11-12 00:12:30,062 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:12:29" (1/1) ... [2023-11-12 00:12:30,075 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:12:29" (1/1) ... [2023-11-12 00:12:30,102 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:12:29" (1/1) ... [2023-11-12 00:12:30,107 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:12:29" (1/1) ... [2023-11-12 00:12:30,112 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:12:29" (1/1) ... [2023-11-12 00:12:30,127 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:12:29" (1/1) ... [2023-11-12 00:12:30,132 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-12 00:12:30,133 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-12 00:12:30,133 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-12 00:12:30,133 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-12 00:12:30,134 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:12:29" (1/1) ... [2023-11-12 00:12:30,153 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-12 00:12:30,164 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f9a92c2-34f9-4f99-bcce-e2cc2b648bf7/bin/utaipan-verify-NcY6lQBIFX/z3 [2023-11-12 00:12:30,177 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f9a92c2-34f9-4f99-bcce-e2cc2b648bf7/bin/utaipan-verify-NcY6lQBIFX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-12 00:12:30,215 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f9a92c2-34f9-4f99-bcce-e2cc2b648bf7/bin/utaipan-verify-NcY6lQBIFX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-12 00:12:30,225 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-12 00:12:30,225 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2023-11-12 00:12:30,225 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-12 00:12:30,225 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2023-11-12 00:12:30,225 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-11-12 00:12:30,226 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-11-12 00:12:30,226 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-11-12 00:12:30,226 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-11-12 00:12:30,226 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-11-12 00:12:30,226 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-11-12 00:12:30,226 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2023-11-12 00:12:30,226 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2023-11-12 00:12:30,227 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-11-12 00:12:30,227 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-11-12 00:12:30,227 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-12 00:12:30,227 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-12 00:12:30,227 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-12 00:12:30,227 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-12 00:12:30,227 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2023-11-12 00:12:30,229 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-12 00:12:30,416 INFO L236 CfgBuilder]: Building ICFG [2023-11-12 00:12:30,419 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-12 00:12:31,368 INFO L277 CfgBuilder]: Performing block encoding [2023-11-12 00:12:31,649 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-12 00:12:31,649 INFO L302 CfgBuilder]: Removed 5 assume(true) statements. [2023-11-12 00:12:31,652 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 12:12:31 BoogieIcfgContainer [2023-11-12 00:12:31,652 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-12 00:12:31,654 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-12 00:12:31,655 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-12 00:12:31,658 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-12 00:12:31,658 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 12:12:29" (1/3) ... [2023-11-12 00:12:31,659 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2e27d2a8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 12:12:31, skipping insertion in model container [2023-11-12 00:12:31,659 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:12:29" (2/3) ... [2023-11-12 00:12:31,659 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2e27d2a8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 12:12:31, skipping insertion in model container [2023-11-12 00:12:31,659 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 12:12:31" (3/3) ... [2023-11-12 00:12:31,661 INFO L112 eAbstractionObserver]: Analyzing ICFG parallel-parallel-sum-1.wvr.c [2023-11-12 00:12:31,680 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-12 00:12:31,680 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 28 error locations. [2023-11-12 00:12:31,681 INFO L521 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-12 00:12:31,784 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2023-11-12 00:12:31,823 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2023-11-12 00:12:31,838 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 242 places, 244 transitions, 516 flow [2023-11-12 00:12:31,842 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 242 places, 244 transitions, 516 flow [2023-11-12 00:12:31,844 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 242 places, 244 transitions, 516 flow [2023-11-12 00:12:31,962 INFO L124 PetriNetUnfolderBase]: 15/240 cut-off events. [2023-11-12 00:12:31,962 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2023-11-12 00:12:31,971 INFO L83 FinitePrefix]: Finished finitePrefix Result has 257 conditions, 240 events. 15/240 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 245 event pairs, 0 based on Foata normal form. 0/197 useless extension candidates. Maximal degree in co-relation 182. Up to 2 conditions per place. [2023-11-12 00:12:31,977 INFO L119 LiptonReduction]: Number of co-enabled transitions 4576 [2023-11-12 00:13:13,461 WARN L293 SmtUtils]: Spent 8.42s on a formula simplification. DAG size of input: 119 DAG size of output: 111 (called from [L 279] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-11-12 00:13:14,014 INFO L134 LiptonReduction]: Checked pairs total: 8856 [2023-11-12 00:13:14,014 INFO L136 LiptonReduction]: Total number of compositions: 259 [2023-11-12 00:13:14,024 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 75 places, 67 transitions, 162 flow [2023-11-12 00:13:14,586 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 7258 states, 6854 states have (on average 4.742777939889116) internal successors, (32507), 7257 states have internal predecessors, (32507), 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) [2023-11-12 00:13:14,612 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-12 00:13:14,620 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;@4bdfe75f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-12 00:13:14,620 INFO L358 AbstractCegarLoop]: Starting to check reachability of 40 error locations. [2023-11-12 00:13:14,661 INFO L276 IsEmpty]: Start isEmpty. Operand has 7258 states, 6854 states have (on average 4.742777939889116) internal successors, (32507), 7257 states have internal predecessors, (32507), 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) [2023-11-12 00:13:14,675 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2023-11-12 00:13:14,676 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:13:14,676 INFO L195 NwaCegarLoop]: trace histogram [1, 1] [2023-11-12 00:13:14,677 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 37 more)] === [2023-11-12 00:13:14,685 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:13:14,686 INFO L85 PathProgramCache]: Analyzing trace with hash 40732, now seen corresponding path program 1 times [2023-11-12 00:13:14,702 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-12 00:13:14,702 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1842628569] [2023-11-12 00:13:14,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:13:14,703 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 [2023-11-12 00:13:14,703 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f9a92c2-34f9-4f99-bcce-e2cc2b648bf7/bin/utaipan-verify-NcY6lQBIFX/mathsat [2023-11-12 00:13:14,711 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f9a92c2-34f9-4f99-bcce-e2cc2b648bf7/bin/utaipan-verify-NcY6lQBIFX/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) [2023-11-12 00:13:14,759 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f9a92c2-34f9-4f99-bcce-e2cc2b648bf7/bin/utaipan-verify-NcY6lQBIFX/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 [2023-11-12 00:13:14,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:13:14,986 INFO L262 TraceCheckSpWp]: Trace formula consists of 53 conjuncts, 11 conjunts are in the unsatisfiable core [2023-11-12 00:13:14,997 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 00:13:15,143 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-12 00:13:15,151 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-12 00:13:15,162 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 5 [2023-11-12 00:13:15,226 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-12 00:13:15,228 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-12 00:13:15,235 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2023-11-12 00:13:15,304 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-12 00:13:15,307 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-12 00:13:15,309 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-12 00:13:15,313 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 5 [2023-11-12 00:13:15,336 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-12 00:13:15,338 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-12 00:13:15,348 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-12 00:13:15,350 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-12 00:13:15,359 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 18 [2023-11-12 00:13:15,451 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-12 00:13:15,454 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-12 00:13:15,462 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-12 00:13:15,466 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 5 [2023-11-12 00:13:15,498 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-12 00:13:15,505 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 15 [2023-11-12 00:13:15,550 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-12 00:13:15,553 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-12 00:13:15,555 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 5 [2023-11-12 00:13:15,572 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-12 00:13:15,575 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-12 00:13:15,580 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2023-11-12 00:13:15,637 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-12 00:13:15,640 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-12 00:13:15,643 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-12 00:13:15,645 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 5 [2023-11-12 00:13:15,667 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-12 00:13:15,669 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-12 00:13:15,671 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-12 00:13:15,676 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-12 00:13:15,684 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 18 [2023-11-12 00:13:15,727 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-12 00:13:15,729 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-12 00:13:15,732 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-12 00:13:15,743 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-12 00:13:15,746 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 10 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 5 [2023-11-12 00:13:15,772 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-12 00:13:15,775 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-12 00:13:15,780 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-12 00:13:15,792 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 22 [2023-11-12 00:13:15,857 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-12 00:13:15,859 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-12 00:13:15,861 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 5 [2023-11-12 00:13:15,876 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-12 00:13:15,881 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-12 00:13:15,886 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2023-11-12 00:13:15,921 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-12 00:13:15,937 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-12 00:13:15,965 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-12 00:13:15,967 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-12 00:13:15,983 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-12 00:13:15,986 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 5 [2023-11-12 00:13:16,004 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-12 00:13:16,015 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-12 00:13:16,017 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-12 00:13:16,039 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-12 00:13:16,048 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 18 [2023-11-12 00:13:16,128 WARN L207 Elim1Store]: Array PQE input equivalent to false [2023-11-12 00:13:16,150 WARN L207 Elim1Store]: Array PQE input equivalent to false [2023-11-12 00:13:16,181 WARN L207 Elim1Store]: Array PQE input equivalent to false [2023-11-12 00:13:16,203 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 00:13:16,203 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-12 00:13:16,203 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-12 00:13:16,204 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1842628569] [2023-11-12 00:13:16,204 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1842628569] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 00:13:16,205 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 00:13:16,205 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-12 00:13:16,206 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1492242782] [2023-11-12 00:13:16,207 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 00:13:16,212 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 00:13:16,213 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-12 00:13:16,248 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 00:13:16,249 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 00:13:16,271 INFO L87 Difference]: Start difference. First operand has 7258 states, 6854 states have (on average 4.742777939889116) internal successors, (32507), 7257 states have internal predecessors, (32507), 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) Second operand has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 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) [2023-11-12 00:13:16,916 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 00:13:16,917 INFO L93 Difference]: Finished difference Result 5960 states and 26025 transitions. [2023-11-12 00:13:16,919 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 00:13:16,920 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 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 2 [2023-11-12 00:13:16,920 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 00:13:17,124 INFO L225 Difference]: With dead ends: 5960 [2023-11-12 00:13:17,125 INFO L226 Difference]: Without dead ends: 5960 [2023-11-12 00:13:17,126 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 00:13:17,129 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 58 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 55 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 58 SdHoareTripleChecker+Valid, 4 SdHoareTripleChecker+Invalid, 56 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 55 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-12 00:13:17,131 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [58 Valid, 4 Invalid, 56 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 55 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-12 00:13:17,219 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5960 states. [2023-11-12 00:13:17,991 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5960 to 5960. [2023-11-12 00:13:18,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5960 states, 5639 states have (on average 4.615179996453272) internal successors, (26025), 5959 states have internal predecessors, (26025), 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) [2023-11-12 00:13:18,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5960 states to 5960 states and 26025 transitions. [2023-11-12 00:13:18,184 INFO L78 Accepts]: Start accepts. Automaton has 5960 states and 26025 transitions. Word has length 2 [2023-11-12 00:13:18,185 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 00:13:18,222 INFO L495 AbstractCegarLoop]: Abstraction has 5960 states and 26025 transitions. [2023-11-12 00:13:18,223 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 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) [2023-11-12 00:13:18,223 INFO L276 IsEmpty]: Start isEmpty. Operand 5960 states and 26025 transitions. [2023-11-12 00:13:18,224 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2023-11-12 00:13:18,224 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:13:18,224 INFO L195 NwaCegarLoop]: trace histogram [1, 1]