./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test4-3.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 0e0057cc Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99823a66-5d49-4db8-8016-f624ee82e40a/bin/utaipan-verify-SwPr7d2a91/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99823a66-5d49-4db8-8016-f624ee82e40a/bin/utaipan-verify-SwPr7d2a91/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99823a66-5d49-4db8-8016-f624ee82e40a/bin/utaipan-verify-SwPr7d2a91/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99823a66-5d49-4db8-8016-f624ee82e40a/bin/utaipan-verify-SwPr7d2a91/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test4-3.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99823a66-5d49-4db8-8016-f624ee82e40a/bin/utaipan-verify-SwPr7d2a91/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99823a66-5d49-4db8-8016-f624ee82e40a/bin/utaipan-verify-SwPr7d2a91 --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 6c366d24ef9ea71cc6362f44963cc0aaadef105bf25ae7c56112d839540c58b5 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-25 00:05:14,603 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-25 00:05:14,743 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99823a66-5d49-4db8-8016-f624ee82e40a/bin/utaipan-verify-SwPr7d2a91/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf [2023-11-25 00:05:14,754 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-25 00:05:14,756 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-25 00:05:14,801 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-25 00:05:14,802 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-25 00:05:14,803 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-25 00:05:14,804 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-25 00:05:14,810 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-25 00:05:14,810 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-25 00:05:14,812 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-25 00:05:14,813 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-25 00:05:14,815 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-25 00:05:14,815 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-25 00:05:14,816 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-25 00:05:14,816 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-25 00:05:14,818 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-25 00:05:14,819 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-25 00:05:14,820 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-25 00:05:14,820 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-25 00:05:14,821 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-25 00:05:14,822 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-25 00:05:14,823 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-25 00:05:14,824 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-25 00:05:14,824 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-25 00:05:14,825 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-25 00:05:14,825 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-25 00:05:14,826 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-25 00:05:14,827 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-25 00:05:14,828 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-25 00:05:14,829 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-25 00:05:14,829 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-25 00:05:14,829 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-25 00:05:14,830 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-25 00:05:14,830 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-25 00:05:14,830 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-25 00:05:14,831 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-25 00:05:14,831 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-25 00:05:14,832 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-25 00:05:14,832 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-25 00:05:14,832 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-25 00:05:14,834 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-25 00:05:14,834 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-25 00:05:14,835 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-25 00:05:14,835 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-25 00:05:14,835 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-25 00:05:14,836 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-25 00:05:14,836 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_99823a66-5d49-4db8-8016-f624ee82e40a/bin/utaipan-verify-SwPr7d2a91/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99823a66-5d49-4db8-8016-f624ee82e40a/bin/utaipan-verify-SwPr7d2a91 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6c366d24ef9ea71cc6362f44963cc0aaadef105bf25ae7c56112d839540c58b5 [2023-11-25 00:05:15,154 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-25 00:05:15,189 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-25 00:05:15,192 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-25 00:05:15,195 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-25 00:05:15,195 INFO L274 PluginConnector]: CDTParser initialized [2023-11-25 00:05:15,197 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99823a66-5d49-4db8-8016-f624ee82e40a/bin/utaipan-verify-SwPr7d2a91/../../sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test4-3.i [2023-11-25 00:05:18,228 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-25 00:05:18,604 INFO L384 CDTParser]: Found 1 translation units. [2023-11-25 00:05:18,605 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99823a66-5d49-4db8-8016-f624ee82e40a/sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test4-3.i [2023-11-25 00:05:18,627 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99823a66-5d49-4db8-8016-f624ee82e40a/bin/utaipan-verify-SwPr7d2a91/data/488ec83a3/5454f3d9b9bc4371a28570c0db2ac929/FLAG4a2682833 [2023-11-25 00:05:18,647 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99823a66-5d49-4db8-8016-f624ee82e40a/bin/utaipan-verify-SwPr7d2a91/data/488ec83a3/5454f3d9b9bc4371a28570c0db2ac929 [2023-11-25 00:05:18,653 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-25 00:05:18,655 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-25 00:05:18,659 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-25 00:05:18,659 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-25 00:05:18,664 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-25 00:05:18,665 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 12:05:18" (1/1) ... [2023-11-25 00:05:18,666 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4142321 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:05:18, skipping insertion in model container [2023-11-25 00:05:18,667 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 12:05:18" (1/1) ... [2023-11-25 00:05:18,764 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-25 00:05:19,531 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-25 00:05:19,544 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) [2023-11-25 00:05:19,545 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@4feb1502 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:05:19, skipping insertion in model container [2023-11-25 00:05:19,556 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-25 00:05:19,556 INFO L186 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2023-11-25 00:05:19,558 INFO L158 Benchmark]: Toolchain (without parser) took 902.00ms. Allocated memory is still 180.4MB. Free memory was 131.3MB in the beginning and 109.0MB in the end (delta: 22.3MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. [2023-11-25 00:05:19,559 INFO L158 Benchmark]: CDTParser took 0.30ms. Allocated memory is still 180.4MB. Free memory is still 153.4MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-25 00:05:19,560 INFO L158 Benchmark]: CACSL2BoogieTranslator took 897.30ms. Allocated memory is still 180.4MB. Free memory was 130.9MB in the beginning and 109.2MB in the end (delta: 21.6MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. [2023-11-25 00:05:19,561 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 180.4MB. Free memory is still 153.4MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 897.30ms. Allocated memory is still 180.4MB. Free memory was 130.9MB in the beginning and 109.2MB in the end (delta: 21.6MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 752]: 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_99823a66-5d49-4db8-8016-f624ee82e40a/bin/utaipan-verify-SwPr7d2a91/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99823a66-5d49-4db8-8016-f624ee82e40a/bin/utaipan-verify-SwPr7d2a91/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99823a66-5d49-4db8-8016-f624ee82e40a/bin/utaipan-verify-SwPr7d2a91/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99823a66-5d49-4db8-8016-f624ee82e40a/bin/utaipan-verify-SwPr7d2a91/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test4-3.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99823a66-5d49-4db8-8016-f624ee82e40a/bin/utaipan-verify-SwPr7d2a91/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99823a66-5d49-4db8-8016-f624ee82e40a/bin/utaipan-verify-SwPr7d2a91 --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 6c366d24ef9ea71cc6362f44963cc0aaadef105bf25ae7c56112d839540c58b5 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-25 00:05:22,119 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-25 00:05:22,218 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99823a66-5d49-4db8-8016-f624ee82e40a/bin/utaipan-verify-SwPr7d2a91/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf [2023-11-25 00:05:22,224 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-25 00:05:22,225 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-25 00:05:22,271 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-25 00:05:22,272 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-25 00:05:22,272 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-25 00:05:22,273 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-25 00:05:22,274 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-25 00:05:22,275 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-25 00:05:22,275 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-25 00:05:22,276 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-25 00:05:22,277 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-25 00:05:22,277 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-25 00:05:22,278 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-25 00:05:22,279 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-25 00:05:22,279 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-25 00:05:22,280 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-25 00:05:22,281 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-25 00:05:22,281 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-25 00:05:22,282 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-25 00:05:22,282 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-25 00:05:22,283 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-25 00:05:22,283 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-25 00:05:22,284 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-25 00:05:22,284 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-25 00:05:22,285 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-25 00:05:22,285 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-11-25 00:05:22,286 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-11-25 00:05:22,286 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-25 00:05:22,287 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-25 00:05:22,287 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-25 00:05:22,288 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-25 00:05:22,288 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-25 00:05:22,288 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-25 00:05:22,288 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-25 00:05:22,289 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-25 00:05:22,289 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-25 00:05:22,289 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-25 00:05:22,290 INFO L153 SettingsManager]: * Trace refinement strategy=WALRUS [2023-11-25 00:05:22,290 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-11-25 00:05:22,291 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-25 00:05:22,291 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-25 00:05:22,291 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-25 00:05:22,291 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_99823a66-5d49-4db8-8016-f624ee82e40a/bin/utaipan-verify-SwPr7d2a91/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99823a66-5d49-4db8-8016-f624ee82e40a/bin/utaipan-verify-SwPr7d2a91 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6c366d24ef9ea71cc6362f44963cc0aaadef105bf25ae7c56112d839540c58b5 [2023-11-25 00:05:22,690 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-25 00:05:22,722 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-25 00:05:22,725 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-25 00:05:22,727 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-25 00:05:22,728 INFO L274 PluginConnector]: CDTParser initialized [2023-11-25 00:05:22,730 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99823a66-5d49-4db8-8016-f624ee82e40a/bin/utaipan-verify-SwPr7d2a91/../../sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test4-3.i [2023-11-25 00:05:25,829 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-25 00:05:26,286 INFO L384 CDTParser]: Found 1 translation units. [2023-11-25 00:05:26,287 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99823a66-5d49-4db8-8016-f624ee82e40a/sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test4-3.i [2023-11-25 00:05:26,318 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99823a66-5d49-4db8-8016-f624ee82e40a/bin/utaipan-verify-SwPr7d2a91/data/8b743efb7/3381f6ff597240fca76a7009fc0e0443/FLAG093b3b9ba [2023-11-25 00:05:26,340 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99823a66-5d49-4db8-8016-f624ee82e40a/bin/utaipan-verify-SwPr7d2a91/data/8b743efb7/3381f6ff597240fca76a7009fc0e0443 [2023-11-25 00:05:26,345 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-25 00:05:26,347 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-25 00:05:26,351 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-25 00:05:26,351 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-25 00:05:26,357 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-25 00:05:26,358 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 12:05:26" (1/1) ... [2023-11-25 00:05:26,359 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4fa961a3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:05:26, skipping insertion in model container [2023-11-25 00:05:26,359 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 12:05:26" (1/1) ... [2023-11-25 00:05:26,459 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-25 00:05:27,118 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-25 00:05:27,142 INFO L199 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2023-11-25 00:05:27,156 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-25 00:05:27,320 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-25 00:05:27,330 INFO L202 MainTranslator]: Completed pre-run [2023-11-25 00:05:27,410 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-25 00:05:27,482 INFO L206 MainTranslator]: Completed translation [2023-11-25 00:05:27,483 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:05:27 WrapperNode [2023-11-25 00:05:27,483 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-25 00:05:27,484 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-25 00:05:27,484 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-25 00:05:27,484 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-25 00:05:27,492 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:05:27" (1/1) ... [2023-11-25 00:05:27,553 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:05:27" (1/1) ... [2023-11-25 00:05:27,658 INFO L138 Inliner]: procedures = 180, calls = 449, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 1487 [2023-11-25 00:05:27,659 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-25 00:05:27,660 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-25 00:05:27,660 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-25 00:05:27,660 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-25 00:05:27,670 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:05:27" (1/1) ... [2023-11-25 00:05:27,670 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:05:27" (1/1) ... [2023-11-25 00:05:27,682 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:05:27" (1/1) ... [2023-11-25 00:05:27,682 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:05:27" (1/1) ... [2023-11-25 00:05:27,747 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:05:27" (1/1) ... [2023-11-25 00:05:27,767 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:05:27" (1/1) ... [2023-11-25 00:05:27,774 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:05:27" (1/1) ... [2023-11-25 00:05:27,782 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:05:27" (1/1) ... [2023-11-25 00:05:27,797 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-25 00:05:27,798 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-25 00:05:27,798 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-25 00:05:27,798 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-25 00:05:27,799 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:05:27" (1/1) ... [2023-11-25 00:05:27,827 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-25 00:05:27,841 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99823a66-5d49-4db8-8016-f624ee82e40a/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-25 00:05:27,856 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99823a66-5d49-4db8-8016-f624ee82e40a/bin/utaipan-verify-SwPr7d2a91/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-25 00:05:27,888 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99823a66-5d49-4db8-8016-f624ee82e40a/bin/utaipan-verify-SwPr7d2a91/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-25 00:05:27,903 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2023-11-25 00:05:27,903 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2023-11-25 00:05:27,904 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-11-25 00:05:27,904 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-11-25 00:05:27,904 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2023-11-25 00:05:27,904 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2023-11-25 00:05:27,905 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-25 00:05:27,906 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-25 00:05:27,907 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-25 00:05:27,907 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-11-25 00:05:27,907 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-11-25 00:05:27,908 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-25 00:05:27,908 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2023-11-25 00:05:27,908 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2023-11-25 00:05:27,908 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-25 00:05:27,908 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-25 00:05:28,231 INFO L241 CfgBuilder]: Building ICFG [2023-11-25 00:05:28,233 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-25 00:05:28,238 WARN L821 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2023-11-25 00:05:35,535 INFO L282 CfgBuilder]: Performing block encoding [2023-11-25 00:05:35,874 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-25 00:05:35,875 INFO L309 CfgBuilder]: Removed 77 assume(true) statements. [2023-11-25 00:05:35,876 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 12:05:35 BoogieIcfgContainer [2023-11-25 00:05:35,877 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-25 00:05:35,879 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-25 00:05:35,880 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-25 00:05:35,883 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-25 00:05:35,884 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 12:05:26" (1/3) ... [2023-11-25 00:05:35,885 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6d5cd019 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 12:05:35, skipping insertion in model container [2023-11-25 00:05:35,885 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 12:05:27" (2/3) ... [2023-11-25 00:05:35,887 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6d5cd019 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 12:05:35, skipping insertion in model container [2023-11-25 00:05:35,887 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 12:05:35" (3/3) ... [2023-11-25 00:05:35,889 INFO L112 eAbstractionObserver]: Analyzing ICFG uthash_JEN_test4-3.i [2023-11-25 00:05:35,910 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-25 00:05:35,910 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 851 error locations. [2023-11-25 00:05:36,001 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-25 00:05:36,008 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;@296fedea, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-25 00:05:36,008 INFO L358 AbstractCegarLoop]: Starting to check reachability of 851 error locations. [2023-11-25 00:05:36,021 INFO L276 IsEmpty]: Start isEmpty. Operand has 1505 states, 641 states have (on average 2.574102964118565) internal successors, (1650), 1496 states have internal predecessors, (1650), 16 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 7 states have call predecessors, (16), 16 states have call successors, (16) [2023-11-25 00:05:36,026 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2023-11-25 00:05:36,026 INFO L187 NwaCegarLoop]: Found error trace [2023-11-25 00:05:36,027 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2023-11-25 00:05:36,028 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 848 more)] === [2023-11-25 00:05:36,035 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-25 00:05:36,036 INFO L85 PathProgramCache]: Analyzing trace with hash 78518253, now seen corresponding path program 1 times [2023-11-25 00:05:36,052 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-25 00:05:36,052 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [481124974] [2023-11-25 00:05:36,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-25 00:05:36,053 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 [2023-11-25 00:05:36,053 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99823a66-5d49-4db8-8016-f624ee82e40a/bin/utaipan-verify-SwPr7d2a91/mathsat [2023-11-25 00:05:36,056 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99823a66-5d49-4db8-8016-f624ee82e40a/bin/utaipan-verify-SwPr7d2a91/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-25 00:05:36,072 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99823a66-5d49-4db8-8016-f624ee82e40a/bin/utaipan-verify-SwPr7d2a91/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2023-11-25 00:05:36,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-25 00:05:36,290 INFO L262 TraceCheckSpWp]: Trace formula consists of 29 conjuncts, 1 conjunts are in the unsatisfiable core [2023-11-25 00:05:36,297 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-25 00:05:36,318 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-25 00:05:36,318 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-25 00:05:36,319 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-25 00:05:36,319 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [481124974] [2023-11-25 00:05:36,320 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [481124974] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-25 00:05:36,320 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-25 00:05:36,320 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-25 00:05:36,322 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1666955074] [2023-11-25 00:05:36,323 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-25 00:05:36,337 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-25 00:05:36,338 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-25 00:05:36,373 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-25 00:05:36,374 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-25 00:05:36,380 INFO L87 Difference]: Start difference. First operand has 1505 states, 641 states have (on average 2.574102964118565) internal successors, (1650), 1496 states have internal predecessors, (1650), 16 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 7 states have call predecessors, (16), 16 states have call successors, (16) Second operand has 2 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-25 00:05:37,750 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-25 00:05:37,750 INFO L93 Difference]: Finished difference Result 1486 states and 1577 transitions. [2023-11-25 00:05:37,758 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-25 00:05:37,759 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4 [2023-11-25 00:05:37,759 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-25 00:05:37,792 INFO L225 Difference]: With dead ends: 1486 [2023-11-25 00:05:37,792 INFO L226 Difference]: Without dead ends: 1485 [2023-11-25 00:05:37,794 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-25 00:05:37,798 INFO L413 NwaCegarLoop]: 1419 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 158 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1419 SdHoareTripleChecker+Invalid, 158 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 158 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-11-25 00:05:37,799 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1419 Invalid, 158 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 158 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-11-25 00:05:37,822 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1485 states. [2023-11-25 00:05:37,909 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1485 to 1485. [2023-11-25 00:05:37,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1485 states, 632 states have (on average 2.4430379746835444) internal successors, (1544), 1476 states have internal predecessors, (1544), 16 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 7 states have call predecessors, (16), 16 states have call successors, (16) [2023-11-25 00:05:37,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1485 states to 1485 states and 1576 transitions. [2023-11-25 00:05:37,921 INFO L78 Accepts]: Start accepts. Automaton has 1485 states and 1576 transitions. Word has length 4 [2023-11-25 00:05:37,921 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-25 00:05:37,921 INFO L495 AbstractCegarLoop]: Abstraction has 1485 states and 1576 transitions. [2023-11-25 00:05:37,921 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-25 00:05:37,922 INFO L276 IsEmpty]: Start isEmpty. Operand 1485 states and 1576 transitions. [2023-11-25 00:05:37,922 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2023-11-25 00:05:37,922 INFO L187 NwaCegarLoop]: Found error trace [2023-11-25 00:05:37,922 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2023-11-25 00:05:37,932 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99823a66-5d49-4db8-8016-f624ee82e40a/bin/utaipan-verify-SwPr7d2a91/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2023-11-25 00:05:38,128 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99823a66-5d49-4db8-8016-f624ee82e40a/bin/utaipan-verify-SwPr7d2a91/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-25 00:05:38,128 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 848 more)] === [2023-11-25 00:05:38,129 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-25 00:05:38,129 INFO L85 PathProgramCache]: Analyzing trace with hash 78518315, now seen corresponding path program 1 times [2023-11-25 00:05:38,130 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-25 00:05:38,130 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [582066753] [2023-11-25 00:05:38,130 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-25 00:05:38,130 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 [2023-11-25 00:05:38,131 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99823a66-5d49-4db8-8016-f624ee82e40a/bin/utaipan-verify-SwPr7d2a91/mathsat [2023-11-25 00:05:38,132 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99823a66-5d49-4db8-8016-f624ee82e40a/bin/utaipan-verify-SwPr7d2a91/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-25 00:05:38,138 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99823a66-5d49-4db8-8016-f624ee82e40a/bin/utaipan-verify-SwPr7d2a91/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2023-11-25 00:05:38,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-25 00:05:38,340 INFO L262 TraceCheckSpWp]: Trace formula consists of 29 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-25 00:05:38,344 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-25 00:05:38,405 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2023-11-25 00:05:38,424 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-25 00:05:38,425 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-25 00:05:38,425 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-25 00:05:38,426 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [582066753] [2023-11-25 00:05:38,427 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [582066753] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-25 00:05:38,431 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-25 00:05:38,431 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-25 00:05:38,432 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1511093706] [2023-11-25 00:05:38,432 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-25 00:05:38,435 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-25 00:05:38,435 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-25 00:05:38,436 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-25 00:05:38,436 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-25 00:05:38,436 INFO L87 Difference]: Start difference. First operand 1485 states and 1576 transitions. Second operand has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-25 00:05:42,227 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-25 00:05:42,228 INFO L93 Difference]: Finished difference Result 1515 states and 1619 transitions. [2023-11-25 00:05:42,232 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-25 00:05:42,232 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4 [2023-11-25 00:05:42,232 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-25 00:05:42,241 INFO L225 Difference]: With dead ends: 1515 [2023-11-25 00:05:42,241 INFO L226 Difference]: Without dead ends: 1515 [2023-11-25 00:05:42,241 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-25 00:05:42,242 INFO L413 NwaCegarLoop]: 815 mSDtfsCounter, 1042 mSDsluCounter, 258 mSDsCounter, 0 mSdLazyCounter, 959 mSolverCounterSat, 105 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1058 SdHoareTripleChecker+Valid, 1073 SdHoareTripleChecker+Invalid, 1064 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 105 IncrementalHoareTripleChecker+Valid, 959 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.7s IncrementalHoareTripleChecker+Time [2023-11-25 00:05:42,243 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1058 Valid, 1073 Invalid, 1064 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [105 Valid, 959 Invalid, 0 Unknown, 0 Unchecked, 3.7s Time] [2023-11-25 00:05:42,247 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1515 states. [2023-11-25 00:05:42,300 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1515 to 1458. [2023-11-25 00:05:42,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1458 states, 698 states have (on average 2.2578796561604584) internal successors, (1576), 1449 states have internal predecessors, (1576), 16 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 7 states have call predecessors, (16), 16 states have call successors, (16) [2023-11-25 00:05:42,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1458 states to 1458 states and 1608 transitions. [2023-11-25 00:05:42,311 INFO L78 Accepts]: Start accepts. Automaton has 1458 states and 1608 transitions. Word has length 4 [2023-11-25 00:05:42,312 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-25 00:05:42,312 INFO L495 AbstractCegarLoop]: Abstraction has 1458 states and 1608 transitions. [2023-11-25 00:05:42,312 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-25 00:05:42,312 INFO L276 IsEmpty]: Start isEmpty. Operand 1458 states and 1608 transitions. [2023-11-25 00:05:42,313 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2023-11-25 00:05:42,313 INFO L187 NwaCegarLoop]: Found error trace [2023-11-25 00:05:42,313 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2023-11-25 00:05:42,321 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99823a66-5d49-4db8-8016-f624ee82e40a/bin/utaipan-verify-SwPr7d2a91/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2023-11-25 00:05:42,515 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99823a66-5d49-4db8-8016-f624ee82e40a/bin/utaipan-verify-SwPr7d2a91/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-25 00:05:42,515 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 848 more)] === [2023-11-25 00:05:42,516 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-25 00:05:42,516 INFO L85 PathProgramCache]: Analyzing trace with hash 78518316, now seen corresponding path program 1 times [2023-11-25 00:05:42,517 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-25 00:05:42,517 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1667324443] [2023-11-25 00:05:42,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-25 00:05:42,518 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 [2023-11-25 00:05:42,518 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99823a66-5d49-4db8-8016-f624ee82e40a/bin/utaipan-verify-SwPr7d2a91/mathsat [2023-11-25 00:05:42,519 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99823a66-5d49-4db8-8016-f624ee82e40a/bin/utaipan-verify-SwPr7d2a91/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-25 00:05:42,523 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99823a66-5d49-4db8-8016-f624ee82e40a/bin/utaipan-verify-SwPr7d2a91/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2023-11-25 00:05:42,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-25 00:05:42,680 INFO L262 TraceCheckSpWp]: Trace formula consists of 29 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-25 00:05:42,683 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-25 00:05:42,705 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-11-25 00:05:42,729 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-25 00:05:42,729 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-25 00:05:42,729 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-25 00:05:42,732 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1667324443] [2023-11-25 00:05:42,733 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1667324443] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-25 00:05:42,733 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-25 00:05:42,733 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-25 00:05:42,737 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1770340470] [2023-11-25 00:05:42,737 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-25 00:05:42,737 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-25 00:05:42,738 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-25 00:05:42,739 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-25 00:05:42,739 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-25 00:05:42,739 INFO L87 Difference]: Start difference. First operand 1458 states and 1608 transitions. Second operand has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-25 00:05:48,034 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-25 00:05:48,035 INFO L93 Difference]: Finished difference Result 1730 states and 1900 transitions. [2023-11-25 00:05:48,035 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-25 00:05:48,035 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4 [2023-11-25 00:05:48,035 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-25 00:05:48,044 INFO L225 Difference]: With dead ends: 1730 [2023-11-25 00:05:48,045 INFO L226 Difference]: Without dead ends: 1730 [2023-11-25 00:05:48,045 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-25 00:05:48,046 INFO L413 NwaCegarLoop]: 1143 mSDtfsCounter, 456 mSDsluCounter, 558 mSDsCounter, 0 mSdLazyCounter, 1088 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 456 SdHoareTripleChecker+Valid, 1701 SdHoareTripleChecker+Invalid, 1111 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 1088 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.2s IncrementalHoareTripleChecker+Time [2023-11-25 00:05:48,047 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [456 Valid, 1701 Invalid, 1111 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 1088 Invalid, 0 Unknown, 0 Unchecked, 5.2s Time] [2023-11-25 00:05:48,051 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1730 states. [2023-11-25 00:05:48,082 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1730 to 1581. [2023-11-25 00:05:48,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1581 states, 831 states have (on average 2.2250300842358604) internal successors, (1849), 1572 states have internal predecessors, (1849), 16 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 7 states have call predecessors, (16), 16 states have call successors, (16) [2023-11-25 00:05:48,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1581 states to 1581 states and 1881 transitions. [2023-11-25 00:05:48,094 INFO L78 Accepts]: Start accepts. Automaton has 1581 states and 1881 transitions. Word has length 4 [2023-11-25 00:05:48,094 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-25 00:05:48,094 INFO L495 AbstractCegarLoop]: Abstraction has 1581 states and 1881 transitions. [2023-11-25 00:05:48,095 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-25 00:05:48,095 INFO L276 IsEmpty]: Start isEmpty. Operand 1581 states and 1881 transitions. [2023-11-25 00:05:48,095 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2023-11-25 00:05:48,095 INFO L187 NwaCegarLoop]: Found error trace [2023-11-25 00:05:48,096 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2023-11-25 00:05:48,102 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99823a66-5d49-4db8-8016-f624ee82e40a/bin/utaipan-verify-SwPr7d2a91/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2023-11-25 00:05:48,297 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99823a66-5d49-4db8-8016-f624ee82e40a/bin/utaipan-verify-SwPr7d2a91/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-25 00:05:48,298 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr640REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 848 more)] === [2023-11-25 00:05:48,298 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-25 00:05:48,298 INFO L85 PathProgramCache]: Analyzing trace with hash -1859208265, now seen corresponding path program 1 times [2023-11-25 00:05:48,298 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-25 00:05:48,299 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1069051532] [2023-11-25 00:05:48,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-25 00:05:48,299 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 [2023-11-25 00:05:48,299 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99823a66-5d49-4db8-8016-f624ee82e40a/bin/utaipan-verify-SwPr7d2a91/mathsat [2023-11-25 00:05:48,300 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99823a66-5d49-4db8-8016-f624ee82e40a/bin/utaipan-verify-SwPr7d2a91/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-25 00:05:48,305 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99823a66-5d49-4db8-8016-f624ee82e40a/bin/utaipan-verify-SwPr7d2a91/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2023-11-25 00:05:48,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-25 00:05:48,461 INFO L262 TraceCheckSpWp]: Trace formula consists of 23 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-25 00:05:48,464 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-25 00:05:48,472 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-25 00:05:48,473 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-25 00:05:48,473 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-25 00:05:48,473 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1069051532] [2023-11-25 00:05:48,473 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1069051532] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-25 00:05:48,473 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-25 00:05:48,474 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-25 00:05:48,474 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1569629015] [2023-11-25 00:05:48,474 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-25 00:05:48,474 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-25 00:05:48,475 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-25 00:05:48,475 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-25 00:05:48,475 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-25 00:05:48,476 INFO L87 Difference]: Start difference. First operand 1581 states and 1881 transitions. Second operand has 3 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-25 00:05:50,512 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-25 00:05:50,513 INFO L93 Difference]: Finished difference Result 2770 states and 3331 transitions. [2023-11-25 00:05:50,516 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-25 00:05:50,516 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2023-11-25 00:05:50,516 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-25 00:05:50,533 INFO L225 Difference]: With dead ends: 2770 [2023-11-25 00:05:50,533 INFO L226 Difference]: Without dead ends: 2770 [2023-11-25 00:05:50,533 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-25 00:05:50,536 INFO L413 NwaCegarLoop]: 1312 mSDtfsCounter, 1029 mSDsluCounter, 1311 mSDsCounter, 0 mSdLazyCounter, 322 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1035 SdHoareTripleChecker+Valid, 2623 SdHoareTripleChecker+Invalid, 322 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 322 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2023-11-25 00:05:50,539 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1035 Valid, 2623 Invalid, 322 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 322 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2023-11-25 00:05:50,546 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2770 states. [2023-11-25 00:05:50,587 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2770 to 1582. [2023-11-25 00:05:50,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1582 states, 832 states have (on average 2.2235576923076925) internal successors, (1850), 1573 states have internal predecessors, (1850), 16 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 7 states have call predecessors, (16), 16 states have call successors, (16) [2023-11-25 00:05:50,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1582 states to 1582 states and 1882 transitions. [2023-11-25 00:05:50,599 INFO L78 Accepts]: Start accepts. Automaton has 1582 states and 1882 transitions. Word has length 5 [2023-11-25 00:05:50,599 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-25 00:05:50,599 INFO L495 AbstractCegarLoop]: Abstraction has 1582 states and 1882 transitions. [2023-11-25 00:05:50,599 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-25 00:05:50,600 INFO L276 IsEmpty]: Start isEmpty. Operand 1582 states and 1882 transitions. [2023-11-25 00:05:50,601 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2023-11-25 00:05:50,601 INFO L187 NwaCegarLoop]: Found error trace [2023-11-25 00:05:50,601 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-25 00:05:50,608 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99823a66-5d49-4db8-8016-f624ee82e40a/bin/utaipan-verify-SwPr7d2a91/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2023-11-25 00:05:50,803 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99823a66-5d49-4db8-8016-f624ee82e40a/bin/utaipan-verify-SwPr7d2a91/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-25 00:05:50,803 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 848 more)] === [2023-11-25 00:05:50,803 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-25 00:05:50,803 INFO L85 PathProgramCache]: Analyzing trace with hash -1057099819, now seen corresponding path program 1 times [2023-11-25 00:05:50,804 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-25 00:05:50,804 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [536480604] [2023-11-25 00:05:50,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-25 00:05:50,804 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 [2023-11-25 00:05:50,804 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99823a66-5d49-4db8-8016-f624ee82e40a/bin/utaipan-verify-SwPr7d2a91/mathsat [2023-11-25 00:05:50,806 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99823a66-5d49-4db8-8016-f624ee82e40a/bin/utaipan-verify-SwPr7d2a91/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-25 00:05:50,820 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99823a66-5d49-4db8-8016-f624ee82e40a/bin/utaipan-verify-SwPr7d2a91/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2023-11-25 00:05:51,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-25 00:05:51,022 INFO L262 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-25 00:05:51,025 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-25 00:05:51,037 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-25 00:05:51,038 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-25 00:05:51,038 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-25 00:05:51,038 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [536480604] [2023-11-25 00:05:51,038 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [536480604] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-25 00:05:51,039 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-25 00:05:51,039 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-25 00:05:51,039 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2113414074] [2023-11-25 00:05:51,039 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-25 00:05:51,039 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-25 00:05:51,039 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-25 00:05:51,040 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-25 00:05:51,041 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-25 00:05:51,044 INFO L87 Difference]: Start difference. First operand 1582 states and 1882 transitions. Second operand has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-25 00:05:52,502 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-25 00:05:52,503 INFO L93 Difference]: Finished difference Result 1543 states and 1842 transitions. [2023-11-25 00:05:52,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-25 00:05:52,505 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2023-11-25 00:05:52,505 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-25 00:05:52,513 INFO L225 Difference]: With dead ends: 1543 [2023-11-25 00:05:52,514 INFO L226 Difference]: Without dead ends: 1543 [2023-11-25 00:05:52,514 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-25 00:05:52,515 INFO L413 NwaCegarLoop]: 1267 mSDtfsCounter, 70 mSDsluCounter, 1218 mSDsCounter, 0 mSdLazyCounter, 310 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 70 SdHoareTripleChecker+Valid, 2485 SdHoareTripleChecker+Invalid, 310 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 310 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2023-11-25 00:05:52,515 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [70 Valid, 2485 Invalid, 310 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 310 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2023-11-25 00:05:52,519 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1543 states. [2023-11-25 00:05:52,558 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1543 to 1543. [2023-11-25 00:05:52,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1543 states, 817 states have (on average 2.215422276621787) internal successors, (1810), 1534 states have internal predecessors, (1810), 16 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 7 states have call predecessors, (16), 16 states have call successors, (16) [2023-11-25 00:05:52,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1543 states to 1543 states and 1842 transitions. [2023-11-25 00:05:52,568 INFO L78 Accepts]: Start accepts. Automaton has 1543 states and 1842 transitions. Word has length 10 [2023-11-25 00:05:52,568 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-25 00:05:52,568 INFO L495 AbstractCegarLoop]: Abstraction has 1543 states and 1842 transitions. [2023-11-25 00:05:52,569 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-25 00:05:52,569 INFO L276 IsEmpty]: Start isEmpty. Operand 1543 states and 1842 transitions. [2023-11-25 00:05:52,569 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2023-11-25 00:05:52,569 INFO L187 NwaCegarLoop]: Found error trace [2023-11-25 00:05:52,570 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-25 00:05:52,577 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99823a66-5d49-4db8-8016-f624ee82e40a/bin/utaipan-verify-SwPr7d2a91/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Ended with exit code 0 [2023-11-25 00:05:52,773 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99823a66-5d49-4db8-8016-f624ee82e40a/bin/utaipan-verify-SwPr7d2a91/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-25 00:05:52,773 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr28REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 848 more)] === [2023-11-25 00:05:52,774 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-25 00:05:52,774 INFO L85 PathProgramCache]: Analyzing trace with hash 2034318927, now seen corresponding path program 1 times [2023-11-25 00:05:52,774 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-25 00:05:52,775 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1881816768] [2023-11-25 00:05:52,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-25 00:05:52,775 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 [2023-11-25 00:05:52,775 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99823a66-5d49-4db8-8016-f624ee82e40a/bin/utaipan-verify-SwPr7d2a91/mathsat [2023-11-25 00:05:52,776 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99823a66-5d49-4db8-8016-f624ee82e40a/bin/utaipan-verify-SwPr7d2a91/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-25 00:05:52,792 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99823a66-5d49-4db8-8016-f624ee82e40a/bin/utaipan-verify-SwPr7d2a91/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2023-11-25 00:05:52,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-25 00:05:52,981 INFO L262 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-25 00:05:52,984 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-25 00:05:53,008 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-25 00:05:53,008 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-25 00:05:53,008 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-25 00:05:53,009 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1881816768] [2023-11-25 00:05:53,009 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1881816768] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-25 00:05:53,009 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-25 00:05:53,009 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-25 00:05:53,009 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [207826364] [2023-11-25 00:05:53,009 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-25 00:05:53,010 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-25 00:05:53,010 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-25 00:05:53,011 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-25 00:05:53,011 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-25 00:05:53,011 INFO L87 Difference]: Start difference. First operand 1543 states and 1842 transitions. Second operand has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-25 00:05:54,941 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-25 00:05:54,942 INFO L93 Difference]: Finished difference Result 1529 states and 1821 transitions. [2023-11-25 00:05:54,943 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-25 00:05:54,944 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2023-11-25 00:05:54,944 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-25 00:05:54,952 INFO L225 Difference]: With dead ends: 1529 [2023-11-25 00:05:54,953 INFO L226 Difference]: Without dead ends: 1529 [2023-11-25 00:05:54,953 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-25 00:05:54,954 INFO L413 NwaCegarLoop]: 1236 mSDtfsCounter, 58 mSDsluCounter, 2448 mSDsCounter, 0 mSdLazyCounter, 470 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 58 SdHoareTripleChecker+Valid, 3684 SdHoareTripleChecker+Invalid, 492 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 470 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2023-11-25 00:05:54,954 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [58 Valid, 3684 Invalid, 492 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 470 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2023-11-25 00:05:54,958 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1529 states. [2023-11-25 00:05:54,985 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1529 to 1528. [2023-11-25 00:05:54,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1528 states, 816 states have (on average 2.1911764705882355) internal successors, (1788), 1519 states have internal predecessors, (1788), 16 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 7 states have call predecessors, (16), 16 states have call successors, (16) [2023-11-25 00:05:54,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1528 states to 1528 states and 1820 transitions. [2023-11-25 00:05:54,994 INFO L78 Accepts]: Start accepts. Automaton has 1528 states and 1820 transitions. Word has length 12 [2023-11-25 00:05:54,995 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-25 00:05:54,995 INFO L495 AbstractCegarLoop]: Abstraction has 1528 states and 1820 transitions. [2023-11-25 00:05:54,995 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-25 00:05:54,995 INFO L276 IsEmpty]: Start isEmpty. Operand 1528 states and 1820 transitions. [2023-11-25 00:05:54,996 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2023-11-25 00:05:54,996 INFO L187 NwaCegarLoop]: Found error trace [2023-11-25 00:05:54,997 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-25 00:05:55,005 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99823a66-5d49-4db8-8016-f624ee82e40a/bin/utaipan-verify-SwPr7d2a91/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2023-11-25 00:05:55,200 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99823a66-5d49-4db8-8016-f624ee82e40a/bin/utaipan-verify-SwPr7d2a91/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-25 00:05:55,200 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr42REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 848 more)] === [2023-11-25 00:05:55,201 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-25 00:05:55,201 INFO L85 PathProgramCache]: Analyzing trace with hash -40476259, now seen corresponding path program 1 times [2023-11-25 00:05:55,201 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-25 00:05:55,201 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2113445119] [2023-11-25 00:05:55,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-25 00:05:55,201 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 [2023-11-25 00:05:55,201 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99823a66-5d49-4db8-8016-f624ee82e40a/bin/utaipan-verify-SwPr7d2a91/mathsat [2023-11-25 00:05:55,203 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99823a66-5d49-4db8-8016-f624ee82e40a/bin/utaipan-verify-SwPr7d2a91/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-25 00:05:55,204 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99823a66-5d49-4db8-8016-f624ee82e40a/bin/utaipan-verify-SwPr7d2a91/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2023-11-25 00:05:55,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-25 00:05:55,410 INFO L262 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-25 00:05:55,414 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-25 00:05:55,421 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2023-11-25 00:05:55,531 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-25 00:05:55,531 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-25 00:05:55,531 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-25 00:05:55,531 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2113445119] [2023-11-25 00:05:55,532 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2113445119] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-25 00:05:55,532 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-25 00:05:55,532 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-25 00:05:55,532 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1879167024] [2023-11-25 00:05:55,532 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-25 00:05:55,533 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-25 00:05:55,533 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-25 00:05:55,533 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-25 00:05:55,533 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-25 00:05:55,534 INFO L87 Difference]: Start difference. First operand 1528 states and 1820 transitions. Second operand has 4 states, 3 states have (on average 8.666666666666666) internal successors, (26), 4 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-25 00:05:59,785 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-25 00:05:59,786 INFO L93 Difference]: Finished difference Result 1581 states and 1827 transitions. [2023-11-25 00:05:59,786 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-25 00:05:59,786 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 8.666666666666666) internal successors, (26), 4 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2023-11-25 00:05:59,787 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-25 00:05:59,795 INFO L225 Difference]: With dead ends: 1581 [2023-11-25 00:05:59,795 INFO L226 Difference]: Without dead ends: 1581 [2023-11-25 00:05:59,796 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-25 00:05:59,796 INFO L413 NwaCegarLoop]: 779 mSDtfsCounter, 977 mSDsluCounter, 800 mSDsCounter, 0 mSdLazyCounter, 1731 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 993 SdHoareTripleChecker+Valid, 1579 SdHoareTripleChecker+Invalid, 1746 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 1731 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.2s IncrementalHoareTripleChecker+Time [2023-11-25 00:05:59,797 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [993 Valid, 1579 Invalid, 1746 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 1731 Invalid, 0 Unknown, 0 Unchecked, 4.2s Time] [2023-11-25 00:05:59,800 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1581 states. [2023-11-25 00:05:59,821 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1581 to 1524. [2023-11-25 00:05:59,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1524 states, 816 states have (on average 2.1862745098039214) internal successors, (1784), 1515 states have internal predecessors, (1784), 16 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 7 states have call predecessors, (16), 16 states have call successors, (16) [2023-11-25 00:05:59,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1524 states to 1524 states and 1816 transitions. [2023-11-25 00:05:59,830 INFO L78 Accepts]: Start accepts. Automaton has 1524 states and 1816 transitions. Word has length 26 [2023-11-25 00:05:59,830 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-25 00:05:59,830 INFO L495 AbstractCegarLoop]: Abstraction has 1524 states and 1816 transitions. [2023-11-25 00:05:59,831 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 8.666666666666666) internal successors, (26), 4 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-25 00:05:59,831 INFO L276 IsEmpty]: Start isEmpty. Operand 1524 states and 1816 transitions. [2023-11-25 00:05:59,832 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2023-11-25 00:05:59,832 INFO L187 NwaCegarLoop]: Found error trace [2023-11-25 00:05:59,832 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-25 00:05:59,846 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99823a66-5d49-4db8-8016-f624ee82e40a/bin/utaipan-verify-SwPr7d2a91/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2023-11-25 00:06:00,035 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99823a66-5d49-4db8-8016-f624ee82e40a/bin/utaipan-verify-SwPr7d2a91/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-25 00:06:00,035 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr43REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 848 more)] === [2023-11-25 00:06:00,035 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-25 00:06:00,036 INFO L85 PathProgramCache]: Analyzing trace with hash -40476258, now seen corresponding path program 1 times [2023-11-25 00:06:00,036 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-25 00:06:00,037 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2093151466] [2023-11-25 00:06:00,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-25 00:06:00,037 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 [2023-11-25 00:06:00,037 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99823a66-5d49-4db8-8016-f624ee82e40a/bin/utaipan-verify-SwPr7d2a91/mathsat [2023-11-25 00:06:00,038 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99823a66-5d49-4db8-8016-f624ee82e40a/bin/utaipan-verify-SwPr7d2a91/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-25 00:06:00,060 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99823a66-5d49-4db8-8016-f624ee82e40a/bin/utaipan-verify-SwPr7d2a91/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2023-11-25 00:06:00,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-25 00:06:00,264 INFO L262 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-25 00:06:00,268 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-25 00:06:00,275 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-11-25 00:06:00,487 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-25 00:06:00,488 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-25 00:06:00,488 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-25 00:06:00,488 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2093151466] [2023-11-25 00:06:00,488 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2093151466] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-25 00:06:00,488 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-25 00:06:00,488 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-25 00:06:00,489 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1583105120] [2023-11-25 00:06:00,489 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-25 00:06:00,489 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-25 00:06:00,489 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-25 00:06:00,490 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-25 00:06:00,490 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-25 00:06:00,490 INFO L87 Difference]: Start difference. First operand 1524 states and 1816 transitions. Second operand has 4 states, 3 states have (on average 8.666666666666666) internal successors, (26), 4 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-25 00:06:06,575 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-25 00:06:06,575 INFO L93 Difference]: Finished difference Result 1669 states and 1831 transitions. [2023-11-25 00:06:06,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-25 00:06:06,576 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 8.666666666666666) internal successors, (26), 4 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2023-11-25 00:06:06,576 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-25 00:06:06,583 INFO L225 Difference]: With dead ends: 1669 [2023-11-25 00:06:06,583 INFO L226 Difference]: Without dead ends: 1669 [2023-11-25 00:06:06,583 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-25 00:06:06,584 INFO L413 NwaCegarLoop]: 1107 mSDtfsCounter, 393 mSDsluCounter, 1151 mSDsCounter, 0 mSdLazyCounter, 1815 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 393 SdHoareTripleChecker+Valid, 2258 SdHoareTripleChecker+Invalid, 1818 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 1815 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.0s IncrementalHoareTripleChecker+Time [2023-11-25 00:06:06,584 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [393 Valid, 2258 Invalid, 1818 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 1815 Invalid, 0 Unknown, 0 Unchecked, 6.0s Time] [2023-11-25 00:06:06,588 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1669 states. [2023-11-25 00:06:06,610 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1669 to 1520. [2023-11-25 00:06:06,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1520 states, 816 states have (on average 2.1813725490196076) internal successors, (1780), 1511 states have internal predecessors, (1780), 16 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 7 states have call predecessors, (16), 16 states have call successors, (16) [2023-11-25 00:06:06,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1520 states to 1520 states and 1812 transitions. [2023-11-25 00:06:06,619 INFO L78 Accepts]: Start accepts. Automaton has 1520 states and 1812 transitions. Word has length 26 [2023-11-25 00:06:06,620 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-25 00:06:06,620 INFO L495 AbstractCegarLoop]: Abstraction has 1520 states and 1812 transitions. [2023-11-25 00:06:06,620 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 8.666666666666666) internal successors, (26), 4 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-25 00:06:06,620 INFO L276 IsEmpty]: Start isEmpty. Operand 1520 states and 1812 transitions. [2023-11-25 00:06:06,621 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2023-11-25 00:06:06,622 INFO L187 NwaCegarLoop]: Found error trace [2023-11-25 00:06:06,622 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-25 00:06:06,630 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99823a66-5d49-4db8-8016-f624ee82e40a/bin/utaipan-verify-SwPr7d2a91/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Ended with exit code 0 [2023-11-25 00:06:06,825 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99823a66-5d49-4db8-8016-f624ee82e40a/bin/utaipan-verify-SwPr7d2a91/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-25 00:06:06,825 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr107REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 848 more)] === [2023-11-25 00:06:06,826 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-25 00:06:06,826 INFO L85 PathProgramCache]: Analyzing trace with hash -207266793, now seen corresponding path program 1 times [2023-11-25 00:06:06,826 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-25 00:06:06,826 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [812074107] [2023-11-25 00:06:06,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-25 00:06:06,827 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 [2023-11-25 00:06:06,827 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99823a66-5d49-4db8-8016-f624ee82e40a/bin/utaipan-verify-SwPr7d2a91/mathsat [2023-11-25 00:06:06,828 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99823a66-5d49-4db8-8016-f624ee82e40a/bin/utaipan-verify-SwPr7d2a91/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-25 00:06:06,830 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99823a66-5d49-4db8-8016-f624ee82e40a/bin/utaipan-verify-SwPr7d2a91/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2023-11-25 00:06:07,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-25 00:06:07,091 INFO L262 TraceCheckSpWp]: Trace formula consists of 171 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-25 00:06:07,095 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-25 00:06:07,161 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-25 00:06:07,162 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-25 00:06:07,162 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-25 00:06:07,162 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [812074107] [2023-11-25 00:06:07,162 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [812074107] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-25 00:06:07,162 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-25 00:06:07,162 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-25 00:06:07,163 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [733737028] [2023-11-25 00:06:07,163 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-25 00:06:07,164 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-25 00:06:07,164 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-25 00:06:07,165 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-25 00:06:07,165 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-25 00:06:07,166 INFO L87 Difference]: Start difference. First operand 1520 states and 1812 transitions. Second operand has 4 states, 4 states have (on average 10.5) internal successors, (42), 4 states have internal predecessors, (42), 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)