./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/weaver/popl20-more-sorted.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 9bd2c7ff Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d15baa9b-c6f7-49cb-9a54-32dfb3f89a32/bin/utaipan-verify-t7M7D8N6sZ/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d15baa9b-c6f7-49cb-9a54-32dfb3f89a32/bin/utaipan-verify-t7M7D8N6sZ/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d15baa9b-c6f7-49cb-9a54-32dfb3f89a32/bin/utaipan-verify-t7M7D8N6sZ/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d15baa9b-c6f7-49cb-9a54-32dfb3f89a32/bin/utaipan-verify-t7M7D8N6sZ/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/weaver/popl20-more-sorted.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d15baa9b-c6f7-49cb-9a54-32dfb3f89a32/bin/utaipan-verify-t7M7D8N6sZ/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d15baa9b-c6f7-49cb-9a54-32dfb3f89a32/bin/utaipan-verify-t7M7D8N6sZ --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 39e987e3198040ef6af9e29359b0ab7bee89306d1945f6e4e7a9286ebbe2a705 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 04:57:59,452 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 04:57:59,561 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d15baa9b-c6f7-49cb-9a54-32dfb3f89a32/bin/utaipan-verify-t7M7D8N6sZ/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf [2023-11-19 04:57:59,566 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 04:57:59,567 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-19 04:57:59,608 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 04:57:59,609 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-19 04:57:59,610 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-19 04:57:59,611 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 04:57:59,616 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-19 04:57:59,617 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-19 04:57:59,617 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-19 04:57:59,618 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-19 04:57:59,620 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-19 04:57:59,620 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-19 04:57:59,621 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-19 04:57:59,621 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-19 04:57:59,622 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-19 04:57:59,622 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-19 04:57:59,623 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-19 04:57:59,623 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-19 04:57:59,624 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-19 04:57:59,625 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-19 04:57:59,625 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-19 04:57:59,626 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 04:57:59,626 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-19 04:57:59,626 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-19 04:57:59,627 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-19 04:57:59,627 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 04:57:59,628 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-19 04:57:59,629 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-19 04:57:59,629 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-19 04:57:59,629 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 04:57:59,630 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-19 04:57:59,630 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-19 04:57:59,630 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-19 04:57:59,630 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 04:57:59,631 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 04:57:59,631 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-19 04:57:59,631 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 04:57:59,632 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 04:57:59,632 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 04:57:59,632 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-19 04:57:59,633 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-19 04:57:59,634 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-19 04:57:59,634 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-19 04:57:59,634 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_d15baa9b-c6f7-49cb-9a54-32dfb3f89a32/bin/utaipan-verify-t7M7D8N6sZ/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d15baa9b-c6f7-49cb-9a54-32dfb3f89a32/bin/utaipan-verify-t7M7D8N6sZ Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 39e987e3198040ef6af9e29359b0ab7bee89306d1945f6e4e7a9286ebbe2a705 [2023-11-19 04:57:59,944 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 04:57:59,969 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 04:57:59,974 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 04:57:59,975 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 04:57:59,977 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 04:57:59,979 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d15baa9b-c6f7-49cb-9a54-32dfb3f89a32/bin/utaipan-verify-t7M7D8N6sZ/../../sv-benchmarks/c/weaver/popl20-more-sorted.wvr.c [2023-11-19 04:58:03,278 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 04:58:03,618 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 04:58:03,624 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d15baa9b-c6f7-49cb-9a54-32dfb3f89a32/sv-benchmarks/c/weaver/popl20-more-sorted.wvr.c [2023-11-19 04:58:03,634 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d15baa9b-c6f7-49cb-9a54-32dfb3f89a32/bin/utaipan-verify-t7M7D8N6sZ/data/b0eec3f74/011e4b8f84594b1a9f326f931d118fe2/FLAGb89026217 [2023-11-19 04:58:03,654 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d15baa9b-c6f7-49cb-9a54-32dfb3f89a32/bin/utaipan-verify-t7M7D8N6sZ/data/b0eec3f74/011e4b8f84594b1a9f326f931d118fe2 [2023-11-19 04:58:03,660 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 04:58:03,663 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 04:58:03,664 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 04:58:03,665 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 04:58:03,671 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 04:58:03,672 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 04:58:03" (1/1) ... [2023-11-19 04:58:03,673 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@145a9e8e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:58:03, skipping insertion in model container [2023-11-19 04:58:03,673 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 04:58:03" (1/1) ... [2023-11-19 04:58:03,701 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 04:58:03,923 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 04:58:03,935 ERROR L324 MainTranslator]: Unsupported Syntax: Found a cast between two array/pointer types of different sizes while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) [2023-11-19 04:58:03,935 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@1b78d865 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:58:03, skipping insertion in model container [2023-11-19 04:58:03,935 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 04:58:03,936 INFO L186 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2023-11-19 04:58:03,938 INFO L158 Benchmark]: Toolchain (without parser) took 274.46ms. Allocated memory is still 205.5MB. Free memory was 173.2MB in the beginning and 163.1MB in the end (delta: 10.1MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-11-19 04:58:03,939 INFO L158 Benchmark]: CDTParser took 0.39ms. Allocated memory is still 134.2MB. Free memory was 77.4MB in the beginning and 77.3MB in the end (delta: 125.9kB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-19 04:58:03,940 INFO L158 Benchmark]: CACSL2BoogieTranslator took 271.55ms. Allocated memory is still 205.5MB. Free memory was 172.7MB in the beginning and 163.1MB in the end (delta: 9.6MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-11-19 04:58:03,941 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.39ms. Allocated memory is still 134.2MB. Free memory was 77.4MB in the beginning and 77.3MB in the end (delta: 125.9kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 271.55ms. Allocated memory is still 205.5MB. Free memory was 172.7MB in the beginning and 163.1MB in the end (delta: 9.6MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 101]: Unsupported Syntax Found a cast between two array/pointer types of different sizes while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d15baa9b-c6f7-49cb-9a54-32dfb3f89a32/bin/utaipan-verify-t7M7D8N6sZ/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d15baa9b-c6f7-49cb-9a54-32dfb3f89a32/bin/utaipan-verify-t7M7D8N6sZ/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d15baa9b-c6f7-49cb-9a54-32dfb3f89a32/bin/utaipan-verify-t7M7D8N6sZ/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d15baa9b-c6f7-49cb-9a54-32dfb3f89a32/bin/utaipan-verify-t7M7D8N6sZ/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/weaver/popl20-more-sorted.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d15baa9b-c6f7-49cb-9a54-32dfb3f89a32/bin/utaipan-verify-t7M7D8N6sZ/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d15baa9b-c6f7-49cb-9a54-32dfb3f89a32/bin/utaipan-verify-t7M7D8N6sZ --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 39e987e3198040ef6af9e29359b0ab7bee89306d1945f6e4e7a9286ebbe2a705 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 04:58:06,265 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 04:58:06,382 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d15baa9b-c6f7-49cb-9a54-32dfb3f89a32/bin/utaipan-verify-t7M7D8N6sZ/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf [2023-11-19 04:58:06,392 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 04:58:06,393 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-19 04:58:06,446 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 04:58:06,447 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-19 04:58:06,448 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-19 04:58:06,449 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 04:58:06,454 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-19 04:58:06,454 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-19 04:58:06,455 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-19 04:58:06,455 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-19 04:58:06,457 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-19 04:58:06,457 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-19 04:58:06,458 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-19 04:58:06,459 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-19 04:58:06,459 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-19 04:58:06,460 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 04:58:06,461 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-19 04:58:06,461 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-19 04:58:06,464 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-19 04:58:06,464 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 04:58:06,465 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-19 04:58:06,465 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-19 04:58:06,466 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-19 04:58:06,466 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 04:58:06,467 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-19 04:58:06,467 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-11-19 04:58:06,468 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-11-19 04:58:06,469 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-19 04:58:06,470 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-19 04:58:06,470 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 04:58:06,470 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 04:58:06,470 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-19 04:58:06,471 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-19 04:58:06,472 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 04:58:06,472 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 04:58:06,472 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 04:58:06,473 INFO L153 SettingsManager]: * Trace refinement strategy=WALRUS [2023-11-19 04:58:06,473 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-11-19 04:58:06,473 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-19 04:58:06,473 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-19 04:58:06,474 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_d15baa9b-c6f7-49cb-9a54-32dfb3f89a32/bin/utaipan-verify-t7M7D8N6sZ/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d15baa9b-c6f7-49cb-9a54-32dfb3f89a32/bin/utaipan-verify-t7M7D8N6sZ Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 39e987e3198040ef6af9e29359b0ab7bee89306d1945f6e4e7a9286ebbe2a705 [2023-11-19 04:58:06,864 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 04:58:06,886 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 04:58:06,889 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 04:58:06,891 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 04:58:06,891 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 04:58:06,893 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d15baa9b-c6f7-49cb-9a54-32dfb3f89a32/bin/utaipan-verify-t7M7D8N6sZ/../../sv-benchmarks/c/weaver/popl20-more-sorted.wvr.c [2023-11-19 04:58:10,036 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 04:58:10,318 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 04:58:10,319 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d15baa9b-c6f7-49cb-9a54-32dfb3f89a32/sv-benchmarks/c/weaver/popl20-more-sorted.wvr.c [2023-11-19 04:58:10,328 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d15baa9b-c6f7-49cb-9a54-32dfb3f89a32/bin/utaipan-verify-t7M7D8N6sZ/data/47007dc11/4a08962083ad4d35905d7e625774720c/FLAG9730b4790 [2023-11-19 04:58:10,344 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d15baa9b-c6f7-49cb-9a54-32dfb3f89a32/bin/utaipan-verify-t7M7D8N6sZ/data/47007dc11/4a08962083ad4d35905d7e625774720c [2023-11-19 04:58:10,347 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 04:58:10,349 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 04:58:10,350 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 04:58:10,351 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 04:58:10,356 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 04:58:10,357 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 04:58:10" (1/1) ... [2023-11-19 04:58:10,358 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@251c7aa6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:58:10, skipping insertion in model container [2023-11-19 04:58:10,359 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 04:58:10" (1/1) ... [2023-11-19 04:58:10,384 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 04:58:10,575 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 04:58:10,590 INFO L199 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2023-11-19 04:58:10,594 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 04:58:10,616 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 04:58:10,622 INFO L202 MainTranslator]: Completed pre-run [2023-11-19 04:58:10,669 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 04:58:10,688 INFO L206 MainTranslator]: Completed translation [2023-11-19 04:58:10,689 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:58:10 WrapperNode [2023-11-19 04:58:10,689 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 04:58:10,690 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-19 04:58:10,691 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-19 04:58:10,691 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-19 04:58:10,698 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:58:10" (1/1) ... [2023-11-19 04:58:10,711 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:58:10" (1/1) ... [2023-11-19 04:58:10,736 INFO L138 Inliner]: procedures = 26, calls = 38, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 107 [2023-11-19 04:58:10,736 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-19 04:58:10,737 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-19 04:58:10,737 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-19 04:58:10,737 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-19 04:58:10,753 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:58:10" (1/1) ... [2023-11-19 04:58:10,754 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:58:10" (1/1) ... [2023-11-19 04:58:10,759 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:58:10" (1/1) ... [2023-11-19 04:58:10,759 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:58:10" (1/1) ... [2023-11-19 04:58:10,772 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:58:10" (1/1) ... [2023-11-19 04:58:10,777 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:58:10" (1/1) ... [2023-11-19 04:58:10,779 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:58:10" (1/1) ... [2023-11-19 04:58:10,781 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:58:10" (1/1) ... [2023-11-19 04:58:10,786 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-19 04:58:10,787 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-19 04:58:10,787 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-19 04:58:10,787 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-19 04:58:10,788 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:58:10" (1/1) ... [2023-11-19 04:58:10,794 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 04:58:10,811 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d15baa9b-c6f7-49cb-9a54-32dfb3f89a32/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 04:58:10,834 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d15baa9b-c6f7-49cb-9a54-32dfb3f89a32/bin/utaipan-verify-t7M7D8N6sZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-19 04:58:10,872 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d15baa9b-c6f7-49cb-9a54-32dfb3f89a32/bin/utaipan-verify-t7M7D8N6sZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-19 04:58:10,936 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-19 04:58:10,936 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2023-11-19 04:58:10,936 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-19 04:58:10,936 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2023-11-19 04:58:10,936 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-11-19 04:58:10,936 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-11-19 04:58:10,936 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-11-19 04:58:10,937 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-11-19 04:58:10,937 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-11-19 04:58:10,937 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-11-19 04:58:10,937 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-19 04:58:10,937 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-19 04:58:10,937 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-19 04:58:10,937 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-19 04:58:10,938 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2023-11-19 04:58:10,939 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-19 04:58:11,067 INFO L236 CfgBuilder]: Building ICFG [2023-11-19 04:58:11,069 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-19 04:58:11,640 INFO L277 CfgBuilder]: Performing block encoding [2023-11-19 04:58:11,666 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-19 04:58:11,666 INFO L302 CfgBuilder]: Removed 4 assume(true) statements. [2023-11-19 04:58:11,672 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 04:58:11 BoogieIcfgContainer [2023-11-19 04:58:11,672 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-19 04:58:11,675 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-19 04:58:11,675 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-19 04:58:11,679 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-19 04:58:11,680 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 04:58:10" (1/3) ... [2023-11-19 04:58:11,681 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@52b279a8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 04:58:11, skipping insertion in model container [2023-11-19 04:58:11,681 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:58:10" (2/3) ... [2023-11-19 04:58:11,681 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@52b279a8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 04:58:11, skipping insertion in model container [2023-11-19 04:58:11,682 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 04:58:11" (3/3) ... [2023-11-19 04:58:11,683 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-more-sorted.wvr.c [2023-11-19 04:58:11,704 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-19 04:58:11,705 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 28 error locations. [2023-11-19 04:58:11,705 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-19 04:58:11,927 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-11-19 04:58:11,980 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2023-11-19 04:58:12,006 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 215 places, 220 transitions, 461 flow [2023-11-19 04:58:12,021 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 215 places, 220 transitions, 461 flow [2023-11-19 04:58:12,023 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 215 places, 220 transitions, 461 flow [2023-11-19 04:58:12,179 INFO L124 PetriNetUnfolderBase]: 15/217 cut-off events. [2023-11-19 04:58:12,179 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-11-19 04:58:12,187 INFO L83 FinitePrefix]: Finished finitePrefix Result has 230 conditions, 217 events. 15/217 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 372 event pairs, 0 based on Foata normal form. 0/174 useless extension candidates. Maximal degree in co-relation 152. Up to 2 conditions per place. [2023-11-19 04:58:12,210 INFO L119 LiptonReduction]: Number of co-enabled transitions 6450 [2023-11-19 04:58:45,917 INFO L134 LiptonReduction]: Checked pairs total: 8699 [2023-11-19 04:58:45,917 INFO L136 LiptonReduction]: Total number of compositions: 242 [2023-11-19 04:58:45,924 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 63 places, 59 transitions, 139 flow [2023-11-19 04:58:46,089 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 2342 states, 1842 states have (on average 4.796416938110749) internal successors, (8835), 2341 states have internal predecessors, (8835), 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) [2023-11-19 04:58:46,113 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 04:58:46,122 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;@7eee47ef, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-19 04:58:46,123 INFO L358 AbstractCegarLoop]: Starting to check reachability of 43 error locations. [2023-11-19 04:58:46,138 INFO L276 IsEmpty]: Start isEmpty. Operand has 2342 states, 1842 states have (on average 4.796416938110749) internal successors, (8835), 2341 states have internal predecessors, (8835), 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) [2023-11-19 04:58:46,147 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2023-11-19 04:58:46,147 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 04:58:46,148 INFO L195 NwaCegarLoop]: trace histogram [1, 1] [2023-11-19 04:58:46,149 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 40 more)] === [2023-11-19 04:58:46,154 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 04:58:46,155 INFO L85 PathProgramCache]: Analyzing trace with hash 27419, now seen corresponding path program 1 times [2023-11-19 04:58:46,167 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-19 04:58:46,167 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [288849458] [2023-11-19 04:58:46,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:58:46,168 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 [2023-11-19 04:58:46,168 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d15baa9b-c6f7-49cb-9a54-32dfb3f89a32/bin/utaipan-verify-t7M7D8N6sZ/mathsat [2023-11-19 04:58:46,169 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d15baa9b-c6f7-49cb-9a54-32dfb3f89a32/bin/utaipan-verify-t7M7D8N6sZ/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) [2023-11-19 04:58:46,172 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d15baa9b-c6f7-49cb-9a54-32dfb3f89a32/bin/utaipan-verify-t7M7D8N6sZ/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 [2023-11-19 04:58:46,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:58:46,281 INFO L262 TraceCheckSpWp]: Trace formula consists of 54 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-19 04:58:46,285 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 04:58:46,350 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 04:58:46,351 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 04:58:46,352 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-19 04:58:46,352 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [288849458] [2023-11-19 04:58:46,353 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [288849458] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 04:58:46,353 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 04:58:46,353 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-19 04:58:46,355 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [697034262] [2023-11-19 04:58:46,356 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 04:58:46,394 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 04:58:46,395 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-19 04:58:46,425 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 04:58:46,425 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 04:58:46,435 INFO L87 Difference]: Start difference. First operand has 2342 states, 1842 states have (on average 4.796416938110749) internal successors, (8835), 2341 states have internal predecessors, (8835), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 04:58:46,905 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 04:58:46,905 INFO L93 Difference]: Finished difference Result 1604 states and 6039 transitions. [2023-11-19 04:58:46,907 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 04:58:46,908 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 2 [2023-11-19 04:58:46,909 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 04:58:46,956 INFO L225 Difference]: With dead ends: 1604 [2023-11-19 04:58:46,956 INFO L226 Difference]: Without dead ends: 1604 [2023-11-19 04:58:46,958 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 04:58:46,962 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 2 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 101 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 103 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 101 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-19 04:58:46,968 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 0 Invalid, 103 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 101 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-19 04:58:46,996 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1604 states. [2023-11-19 04:58:47,121 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1604 to 1602. [2023-11-19 04:58:47,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1602 states, 1326 states have (on average 4.5542986425339365) internal successors, (6039), 1601 states have internal predecessors, (6039), 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) [2023-11-19 04:58:47,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1602 states to 1602 states and 6039 transitions. [2023-11-19 04:58:47,144 INFO L78 Accepts]: Start accepts. Automaton has 1602 states and 6039 transitions. Word has length 2 [2023-11-19 04:58:47,144 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 04:58:47,145 INFO L495 AbstractCegarLoop]: Abstraction has 1602 states and 6039 transitions. [2023-11-19 04:58:47,145 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 04:58:47,146 INFO L276 IsEmpty]: Start isEmpty. Operand 1602 states and 6039 transitions. [2023-11-19 04:58:47,146 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2023-11-19 04:58:47,146 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 04:58:47,146 INFO L195 NwaCegarLoop]: trace histogram [1, 1] [2023-11-19 04:58:47,156 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d15baa9b-c6f7-49cb-9a54-32dfb3f89a32/bin/utaipan-verify-t7M7D8N6sZ/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Ended with exit code 0 [2023-11-19 04:58:47,352 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d15baa9b-c6f7-49cb-9a54-32dfb3f89a32/bin/utaipan-verify-t7M7D8N6sZ/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 [2023-11-19 04:58:47,352 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 40 more)] === [2023-11-19 04:58:47,354 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 04:58:47,354 INFO L85 PathProgramCache]: Analyzing trace with hash 27325, now seen corresponding path program 1 times [2023-11-19 04:58:47,355 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-19 04:58:47,355 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1856084298] [2023-11-19 04:58:47,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:58:47,356 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 [2023-11-19 04:58:47,356 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d15baa9b-c6f7-49cb-9a54-32dfb3f89a32/bin/utaipan-verify-t7M7D8N6sZ/mathsat [2023-11-19 04:58:47,357 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d15baa9b-c6f7-49cb-9a54-32dfb3f89a32/bin/utaipan-verify-t7M7D8N6sZ/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) [2023-11-19 04:58:47,361 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d15baa9b-c6f7-49cb-9a54-32dfb3f89a32/bin/utaipan-verify-t7M7D8N6sZ/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 [2023-11-19 04:58:47,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:58:47,421 INFO L262 TraceCheckSpWp]: Trace formula consists of 44 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-19 04:58:47,422 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 04:58:47,490 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 7 [2023-11-19 04:58:47,524 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 04:58:47,525 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 7 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 1 [2023-11-19 04:58:47,585 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 04:58:47,586 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 1 [2023-11-19 04:58:47,597 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 04:58:47,597 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-11-19 04:58:47,618 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 04:58:47,619 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 1 [2023-11-19 04:58:47,629 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 04:58:47,629 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-11-19 04:58:47,642 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 04:58:47,643 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-11-19 04:58:47,648 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 04:58:47,649 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 1 [2023-11-19 04:58:47,661 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 04:58:47,661 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-11-19 04:58:47,678 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 04:58:47,679 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 1 [2023-11-19 04:58:47,686 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 04:58:47,687 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 1 [2023-11-19 04:58:47,695 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 04:58:47,695 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-11-19 04:58:47,715 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 04:58:47,716 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 1 [2023-11-19 04:58:47,725 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 04:58:47,725 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-11-19 04:58:47,735 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 04:58:47,736 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-11-19 04:58:47,741 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 04:58:47,742 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 1 [2023-11-19 04:58:47,752 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 04:58:47,752 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-11-19 04:58:47,758 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 04:58:47,758 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 1 [2023-11-19 04:58:47,767 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 04:58:47,768 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 1 [2023-11-19 04:58:47,775 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 04:58:47,776 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-11-19 04:58:47,794 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 04:58:47,795 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 1 [2023-11-19 04:58:47,804 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 04:58:47,804 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-11-19 04:58:47,814 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 04:58:47,815 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-11-19 04:58:47,820 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 04:58:47,821 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 1 [2023-11-19 04:58:47,825 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 04:58:47,826 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 04:58:47,826 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-19 04:58:47,826 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1856084298] [2023-11-19 04:58:47,826 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1856084298] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 04:58:47,826 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 04:58:47,827 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-19 04:58:47,827 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1628694093] [2023-11-19 04:58:47,827 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 04:58:47,828 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 04:58:47,828 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-19 04:58:47,829 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 04:58:47,829 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 04:58:47,829 INFO L87 Difference]: Start difference. First operand 1602 states and 6039 transitions. Second operand has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 04:58:48,177 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 04:58:48,178 INFO L93 Difference]: Finished difference Result 1601 states and 6037 transitions. [2023-11-19 04:58:48,178 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 04:58:48,178 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 2 [2023-11-19 04:58:48,179 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 04:58:48,199 INFO L225 Difference]: With dead ends: 1601 [2023-11-19 04:58:48,199 INFO L226 Difference]: Without dead ends: 1601 [2023-11-19 04:58:48,200 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 04:58:48,206 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 2 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 97 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 97 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 97 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-19 04:58:48,207 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 0 Invalid, 97 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 97 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-19 04:58:48,216 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1601 states. [2023-11-19 04:58:48,304 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1601 to 1601. [2023-11-19 04:58:48,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1601 states, 1326 states have (on average 4.552790346907994) internal successors, (6037), 1600 states have internal predecessors, (6037), 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) [2023-11-19 04:58:48,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1601 states to 1601 states and 6037 transitions. [2023-11-19 04:58:48,324 INFO L78 Accepts]: Start accepts. Automaton has 1601 states and 6037 transitions. Word has length 2 [2023-11-19 04:58:48,324 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 04:58:48,324 INFO L495 AbstractCegarLoop]: Abstraction has 1601 states and 6037 transitions. [2023-11-19 04:58:48,327 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 04:58:48,327 INFO L276 IsEmpty]: Start isEmpty. Operand 1601 states and 6037 transitions. [2023-11-19 04:58:48,328 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2023-11-19 04:58:48,328 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 04:58:48,328 INFO L195 NwaCegarLoop]: trace histogram [1, 1] [2023-11-19 04:58:48,335 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d15baa9b-c6f7-49cb-9a54-32dfb3f89a32/bin/utaipan-verify-t7M7D8N6sZ/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 [2023-11-19 04:58:48,530 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d15baa9b-c6f7-49cb-9a54-32dfb3f89a32/bin/utaipan-verify-t7M7D8N6sZ/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 [2023-11-19 04:58:48,531 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 40 more)] === [2023-11-19 04:58:48,531 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 04:58:48,531 INFO L85 PathProgramCache]: Analyzing trace with hash 27326, now seen corresponding path program 1 times [2023-11-19 04:58:48,532 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-19 04:58:48,532 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1143591455] [2023-11-19 04:58:48,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:58:48,532 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 [2023-11-19 04:58:48,532 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d15baa9b-c6f7-49cb-9a54-32dfb3f89a32/bin/utaipan-verify-t7M7D8N6sZ/mathsat [2023-11-19 04:58:48,533 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d15baa9b-c6f7-49cb-9a54-32dfb3f89a32/bin/utaipan-verify-t7M7D8N6sZ/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) [2023-11-19 04:58:48,534 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d15baa9b-c6f7-49cb-9a54-32dfb3f89a32/bin/utaipan-verify-t7M7D8N6sZ/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 [2023-11-19 04:58:48,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:58:48,605 INFO L262 TraceCheckSpWp]: Trace formula consists of 44 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-19 04:58:48,607 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 04:58:48,646 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 7 [2023-11-19 04:58:48,665 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 04:58:48,666 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-19 04:58:48,723 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 04:58:48,727 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 7 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1 [2023-11-19 04:58:48,753 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 04:58:48,754 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 1 [2023-11-19 04:58:48,780 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 04:58:48,781 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 1 [2023-11-19 04:58:48,794 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 04:58:48,795 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-19 04:58:48,817 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 04:58:48,818 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-19 04:58:48,828 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 04:58:48,829 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-11-19 04:58:48,858 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 04:58:48,859 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 1 [2023-11-19 04:58:48,870 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 04:58:48,871 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-19 04:58:48,886 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 04:58:48,887 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-19 04:58:48,894 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 04:58:48,895 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-11-19 04:58:48,913 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 04:58:48,913 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-19 04:58:48,923 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 04:58:48,923 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-11-19 04:58:48,939 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 04:58:48,940 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-19 04:58:48,967 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 04:58:48,968 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 1 [2023-11-19 04:58:48,983 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 04:58:48,987 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-19 04:58:48,998 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 04:58:48,999 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-11-19 04:58:49,018 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 04:58:49,020 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-19 04:58:49,029 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 04:58:49,030 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-11-19 04:58:49,042 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 04:58:49,043 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-19 04:58:49,076 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 04:58:49,077 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-11-19 04:58:49,100 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 04:58:49,101 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 1 [2023-11-19 04:58:49,113 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 04:58:49,113 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-19 04:58:49,141 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 04:58:49,141 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 04:58:49,141 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-19 04:58:49,141 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1143591455] [2023-11-19 04:58:49,142 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1143591455] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 04:58:49,142 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 04:58:49,142 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-19 04:58:49,142 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1469852401] [2023-11-19 04:58:49,142 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 04:58:49,142 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 04:58:49,143 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-19 04:58:49,143 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 04:58:49,143 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 04:58:49,143 INFO L87 Difference]: Start difference. First operand 1601 states and 6037 transitions. Second operand has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 04:58:49,508 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 04:58:49,508 INFO L93 Difference]: Finished difference Result 1601 states and 6036 transitions. [2023-11-19 04:58:49,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 04:58:49,509 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 2 [2023-11-19 04:58:49,509 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 04:58:49,532 INFO L225 Difference]: With dead ends: 1601 [2023-11-19 04:58:49,532 INFO L226 Difference]: Without dead ends: 1601 [2023-11-19 04:58:49,532 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 04:58:49,533 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 99 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 99 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 99 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-19 04:58:49,534 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 0 Invalid, 99 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 99 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-19 04:58:49,541 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1601 states. [2023-11-19 04:58:49,595 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1601 to 1601. [2023-11-19 04:58:49,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1601 states, 1326 states have (on average 4.552036199095022) internal successors, (6036), 1600 states have internal predecessors, (6036), 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) [2023-11-19 04:58:49,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1601 states to 1601 states and 6036 transitions. [2023-11-19 04:58:49,615 INFO L78 Accepts]: Start accepts. Automaton has 1601 states and 6036 transitions. Word has length 2 [2023-11-19 04:58:49,616 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 04:58:49,616 INFO L495 AbstractCegarLoop]: Abstraction has 1601 states and 6036 transitions. [2023-11-19 04:58:49,616 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 04:58:49,616 INFO L276 IsEmpty]: Start isEmpty. Operand 1601 states and 6036 transitions. [2023-11-19 04:58:49,616 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2023-11-19 04:58:49,616 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 04:58:49,617 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2023-11-19 04:58:49,629 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d15baa9b-c6f7-49cb-9a54-32dfb3f89a32/bin/utaipan-verify-t7M7D8N6sZ/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 [2023-11-19 04:58:49,819 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d15baa9b-c6f7-49cb-9a54-32dfb3f89a32/bin/utaipan-verify-t7M7D8N6sZ/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 [2023-11-19 04:58:49,820 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 40 more)] === [2023-11-19 04:58:49,820 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 04:58:49,820 INFO L85 PathProgramCache]: Analyzing trace with hash 849291, now seen corresponding path program 1 times [2023-11-19 04:58:49,820 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-19 04:58:49,821 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2106568858] [2023-11-19 04:58:49,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:58:49,821 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 [2023-11-19 04:58:49,821 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d15baa9b-c6f7-49cb-9a54-32dfb3f89a32/bin/utaipan-verify-t7M7D8N6sZ/mathsat [2023-11-19 04:58:49,822 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d15baa9b-c6f7-49cb-9a54-32dfb3f89a32/bin/utaipan-verify-t7M7D8N6sZ/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) [2023-11-19 04:58:49,823 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d15baa9b-c6f7-49cb-9a54-32dfb3f89a32/bin/utaipan-verify-t7M7D8N6sZ/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 [2023-11-19 04:58:49,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:58:49,929 INFO L262 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-19 04:58:49,931 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 04:58:49,990 INFO L349 Elim1Store]: treesize reduction 60, result has 20.0 percent of original size [2023-11-19 04:58:49,991 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 4 case distinctions, treesize of input 35 treesize of output 40 [2023-11-19 04:58:50,084 INFO L349 Elim1Store]: treesize reduction 103, result has 12.7 percent of original size [2023-11-19 04:58:50,084 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 4 case distinctions, treesize of input 40 treesize of output 40 [2023-11-19 04:58:50,229 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-19 04:58:50,230 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 04:58:50,230 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-19 04:58:50,230 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2106568858] [2023-11-19 04:58:50,230 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2106568858] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 04:58:50,230 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 04:58:50,231 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-19 04:58:50,231 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [3170346] [2023-11-19 04:58:50,231 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 04:58:50,231 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 04:58:50,232 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-19 04:58:50,232 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 04:58:50,232 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 04:58:50,232 INFO L87 Difference]: Start difference. First operand 1601 states and 6036 transitions. Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 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) [2023-11-19 04:58:50,593 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 04:58:50,594 INFO L93 Difference]: Finished difference Result 1306 states and 4775 transitions. [2023-11-19 04:58:50,594 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 04:58:50,594 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 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 3 [2023-11-19 04:58:50,595 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 04:58:50,610 INFO L225 Difference]: With dead ends: 1306 [2023-11-19 04:58:50,610 INFO L226 Difference]: Without dead ends: 1306 [2023-11-19 04:58:50,610 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 04:58:50,611 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 46 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-19 04:58:50,612 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [46 Valid, 0 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-19 04:58:50,616 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1306 states. [2023-11-19 04:58:50,655 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1306 to 1306. [2023-11-19 04:58:50,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1306 states, 1096 states have (on average 4.356751824817518) internal successors, (4775), 1305 states have internal predecessors, (4775), 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) [2023-11-19 04:58:50,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1306 states to 1306 states and 4775 transitions. [2023-11-19 04:58:50,671 INFO L78 Accepts]: Start accepts. Automaton has 1306 states and 4775 transitions. Word has length 3 [2023-11-19 04:58:50,671 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 04:58:50,672 INFO L495 AbstractCegarLoop]: Abstraction has 1306 states and 4775 transitions. [2023-11-19 04:58:50,672 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 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) [2023-11-19 04:58:50,672 INFO L276 IsEmpty]: Start isEmpty. Operand 1306 states and 4775 transitions. [2023-11-19 04:58:50,672 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2023-11-19 04:58:50,672 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 04:58:50,672 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2023-11-19 04:58:50,681 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d15baa9b-c6f7-49cb-9a54-32dfb3f89a32/bin/utaipan-verify-t7M7D8N6sZ/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 [2023-11-19 04:58:50,875 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d15baa9b-c6f7-49cb-9a54-32dfb3f89a32/bin/utaipan-verify-t7M7D8N6sZ/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 [2023-11-19 04:58:50,875 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 40 more)] === [2023-11-19 04:58:50,875 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 04:58:50,875 INFO L85 PathProgramCache]: Analyzing trace with hash 849292, now seen corresponding path program 1 times [2023-11-19 04:58:50,876 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-19 04:58:50,876 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1877095272] [2023-11-19 04:58:50,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:58:50,876 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 [2023-11-19 04:58:50,876 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d15baa9b-c6f7-49cb-9a54-32dfb3f89a32/bin/utaipan-verify-t7M7D8N6sZ/mathsat [2023-11-19 04:58:50,877 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d15baa9b-c6f7-49cb-9a54-32dfb3f89a32/bin/utaipan-verify-t7M7D8N6sZ/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) [2023-11-19 04:58:50,878 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d15baa9b-c6f7-49cb-9a54-32dfb3f89a32/bin/utaipan-verify-t7M7D8N6sZ/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 [2023-11-19 04:58:51,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:58:51,005 INFO L262 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 11 conjunts are in the unsatisfiable core [2023-11-19 04:58:51,007 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 04:58:51,068 INFO L349 Elim1Store]: treesize reduction 13, result has 40.9 percent of original size [2023-11-19 04:58:51,069 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 1 case distinctions, treesize of input 11 treesize of output 9 [2023-11-19 04:58:51,088 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 04:58:51,091 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 04:58:51,092 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 5 [2023-11-19 04:58:51,101 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 04:58:51,107 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 15 [2023-11-19 04:58:51,133 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 04:58:51,135 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 04:58:51,146 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 04:58:51,152 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 1 [2023-11-19 04:58:51,168 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 04:58:51,170 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 04:58:51,217 INFO L349 Elim1Store]: treesize reduction 19, result has 13.6 percent of original size [2023-11-19 04:58:51,218 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 5 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 3 [2023-11-19 04:58:51,228 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 04:58:51,230 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 04:58:51,232 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 04:58:51,236 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-11-19 04:58:51,302 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 04:58:51,303 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 04:58:51,430 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 04:58:51,431 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-19 04:58:51,431 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1877095272] [2023-11-19 04:58:51,431 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1877095272] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-19 04:58:51,431 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-19 04:58:51,431 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 4 [2023-11-19 04:58:51,431 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [163477752] [2023-11-19 04:58:51,431 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 04:58:51,432 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 04:58:51,432 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-19 04:58:51,432 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 04:58:51,432 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-11-19 04:58:51,432 INFO L87 Difference]: Start difference. First operand 1306 states and 4775 transitions. Second operand has 4 states, 3 states have (on average 1.0) internal successors, (3), 3 states have internal predecessors, (3), 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) [2023-11-19 04:58:51,754 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 04:58:51,754 INFO L93 Difference]: Finished difference Result 1011 states and 3514 transitions. [2023-11-19 04:58:51,755 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 04:58:51,755 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.0) internal successors, (3), 3 states have internal predecessors, (3), 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 3 [2023-11-19 04:58:51,756 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 04:58:51,766 INFO L225 Difference]: With dead ends: 1011 [2023-11-19 04:58:51,767 INFO L226 Difference]: Without dead ends: 1011 [2023-11-19 04:58:51,767 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-11-19 04:58:51,768 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 88 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 88 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-19 04:58:51,768 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [88 Valid, 0 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-19 04:58:51,772 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1011 states. [2023-11-19 04:58:51,812 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1011 to 1011. [2023-11-19 04:58:51,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1011 states, 866 states have (on average 4.0577367205542725) internal successors, (3514), 1010 states have internal predecessors, (3514), 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) [2023-11-19 04:58:51,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1011 states to 1011 states and 3514 transitions. [2023-11-19 04:58:51,822 INFO L78 Accepts]: Start accepts. Automaton has 1011 states and 3514 transitions. Word has length 3 [2023-11-19 04:58:51,823 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 04:58:51,823 INFO L495 AbstractCegarLoop]: Abstraction has 1011 states and 3514 transitions. [2023-11-19 04:58:51,824 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.0) internal successors, (3), 3 states have internal predecessors, (3), 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) [2023-11-19 04:58:51,824 INFO L276 IsEmpty]: Start isEmpty. Operand 1011 states and 3514 transitions. [2023-11-19 04:58:51,824 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2023-11-19 04:58:51,824 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 04:58:51,824 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2023-11-19 04:58:51,832 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d15baa9b-c6f7-49cb-9a54-32dfb3f89a32/bin/utaipan-verify-t7M7D8N6sZ/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 [2023-11-19 04:58:52,027 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d15baa9b-c6f7-49cb-9a54-32dfb3f89a32/bin/utaipan-verify-t7M7D8N6sZ/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 [2023-11-19 04:58:52,027 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 40 more)] === [2023-11-19 04:58:52,028 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 04:58:52,028 INFO L85 PathProgramCache]: Analyzing trace with hash 849198, now seen corresponding path program 1 times [2023-11-19 04:58:52,028 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-19 04:58:52,028 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [298126515] [2023-11-19 04:58:52,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:58:52,029 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 [2023-11-19 04:58:52,029 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d15baa9b-c6f7-49cb-9a54-32dfb3f89a32/bin/utaipan-verify-t7M7D8N6sZ/mathsat [2023-11-19 04:58:52,030 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d15baa9b-c6f7-49cb-9a54-32dfb3f89a32/bin/utaipan-verify-t7M7D8N6sZ/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) [2023-11-19 04:58:52,063 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d15baa9b-c6f7-49cb-9a54-32dfb3f89a32/bin/utaipan-verify-t7M7D8N6sZ/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 [2023-11-19 04:58:52,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:58:52,105 INFO L262 TraceCheckSpWp]: Trace formula consists of 55 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-19 04:58:52,107 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 04:58:52,143 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 7 [2023-11-19 04:58:52,165 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 04:58:52,165 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-19 04:58:52,178 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 04:58:52,179 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-19 04:58:52,200 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 04:58:52,201 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 1 [2023-11-19 04:58:52,239 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 04:58:52,240 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 7 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1 [2023-11-19 04:58:52,260 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 04:58:52,261 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 1 [2023-11-19 04:58:52,277 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 04:58:52,278 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-19 04:58:52,303 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 04:58:52,304 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 1 [2023-11-19 04:58:52,316 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 04:58:52,316 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-19 04:58:52,323 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 04:58:52,324 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-11-19 04:58:52,345 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 04:58:52,345 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-19 04:58:52,353 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 04:58:52,354 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-11-19 04:58:52,369 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 04:58:52,370 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-19 04:58:52,378 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 04:58:52,378 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-11-19 04:58:52,392 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 04:58:52,393 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-19 04:58:52,400 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 04:58:52,401 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-11-19 04:58:52,425 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 04:58:52,426 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 1 [2023-11-19 04:58:52,438 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 04:58:52,439 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-19 04:58:52,453 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 04:58:52,454 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-19 04:58:52,461 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 04:58:52,462 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-11-19 04:58:52,477 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 04:58:52,478 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-19 04:58:52,499 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 04:58:52,500 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 1 [2023-11-19 04:58:52,512 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 04:58:52,513 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-19 04:58:52,520 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 04:58:52,520 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-11-19 04:58:52,591 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 04:58:52,591 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 04:58:52,811 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 04:58:52,811 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-19 04:58:52,811 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [298126515] [2023-11-19 04:58:52,811 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [298126515] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 04:58:52,811 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [989123047] [2023-11-19 04:58:52,811 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:58:52,811 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-11-19 04:58:52,812 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d15baa9b-c6f7-49cb-9a54-32dfb3f89a32/bin/utaipan-verify-t7M7D8N6sZ/cvc4 [2023-11-19 04:58:52,817 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d15baa9b-c6f7-49cb-9a54-32dfb3f89a32/bin/utaipan-verify-t7M7D8N6sZ/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-11-19 04:58:52,820 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d15baa9b-c6f7-49cb-9a54-32dfb3f89a32/bin/utaipan-verify-t7M7D8N6sZ/cvc4 --incremental --print-success --lang smt (8)] Waiting until timeout for monitored process [2023-11-19 04:58:52,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:58:52,960 INFO L262 TraceCheckSpWp]: Trace formula consists of 55 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-19 04:58:52,961 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 04:58:52,975 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 7 [2023-11-19 04:58:52,985 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 04:58:52,986 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-11-19 04:58:52,994 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 04:58:52,995 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-11-19 04:58:53,005 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 04:58:53,006 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-19 04:58:53,018 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 04:58:53,018 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-19 04:58:53,039 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 04:58:53,039 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 1 [2023-11-19 04:58:53,053 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 04:58:53,054 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-19 04:58:53,074 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 04:58:53,075 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 1 [2023-11-19 04:58:53,087 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 04:58:53,087 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-19 04:58:53,094 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 04:58:53,095 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-11-19 04:58:53,113 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 04:58:53,113 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-11-19 04:58:53,124 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 04:58:53,125 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-19 04:58:53,151 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 04:58:53,152 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 1 [2023-11-19 04:58:53,163 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 04:58:53,163 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-19 04:58:53,176 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 04:58:53,177 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-19 04:58:53,195 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 04:58:53,195 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 1 [2023-11-19 04:58:53,216 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 04:58:53,217 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 1 [2023-11-19 04:58:53,249 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 04:58:53,249 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 7 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1 [2023-11-19 04:58:53,263 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 04:58:53,264 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-19 04:58:53,284 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 04:58:53,284 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 1 [2023-11-19 04:58:53,295 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 04:58:53,296 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-19 04:58:53,303 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 04:58:53,303 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-11-19 04:58:53,316 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 04:58:53,317 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-19 04:58:53,324 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 04:58:53,324 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-11-19 04:58:53,355 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 04:58:53,355 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 04:58:53,436 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 04:58:53,436 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [989123047] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 04:58:53,436 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1585339486] [2023-11-19 04:58:53,436 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:58:53,437 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 04:58:53,437 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d15baa9b-c6f7-49cb-9a54-32dfb3f89a32/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 04:58:53,438 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d15baa9b-c6f7-49cb-9a54-32dfb3f89a32/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 04:58:53,445 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d15baa9b-c6f7-49cb-9a54-32dfb3f89a32/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-11-19 04:58:53,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:58:53,533 INFO L262 TraceCheckSpWp]: Trace formula consists of 55 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-19 04:58:53,534 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 04:58:53,553 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 7 [2023-11-19 04:58:53,581 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 04:58:53,582 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 1 [2023-11-19 04:58:53,594 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 04:58:53,594 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-19 04:58:53,602 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 04:58:53,602 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-11-19 04:58:53,614 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 04:58:53,615 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-19 04:58:53,622 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 04:58:53,623 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-11-19 04:58:53,633 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 04:58:53,634 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-11-19 04:58:53,645 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 04:58:53,646 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-19 04:58:53,657 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 04:58:53,658 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-19 04:58:53,665 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 04:58:53,666 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-11-19 04:58:53,689 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 04:58:53,689 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 1 [2023-11-19 04:58:53,700 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 04:58:53,700 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-19 04:58:53,726 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 04:58:53,727 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-19 04:58:53,746 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 04:58:53,747 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 1 [2023-11-19 04:58:53,780 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 04:58:53,781 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 7 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1 [2023-11-19 04:58:53,801 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 04:58:53,802 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 1 [2023-11-19 04:58:53,825 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 04:58:53,825 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 1 [2023-11-19 04:58:53,836 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 04:58:53,837 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-19 04:58:53,846 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 04:58:53,847 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-11-19 04:58:53,857 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 04:58:53,858 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-19 04:58:53,869 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 04:58:53,870 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-19 04:58:53,888 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 04:58:53,889 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 1 [2023-11-19 04:58:53,901 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 04:58:53,902 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-11-19 04:58:53,912 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 04:58:53,913 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-11-19 04:58:53,958 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 04:58:53,958 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 04:58:54,070 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 04:58:54,070 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1585339486] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 04:58:54,071 INFO L185 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2023-11-19 04:58:54,071 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2, 2, 2, 2] total 6 [2023-11-19 04:58:54,071 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [367664562] [2023-11-19 04:58:54,071 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2023-11-19 04:58:54,071 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-19 04:58:54,071 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-19 04:58:54,072 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-19 04:58:54,072 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2023-11-19 04:58:54,072 INFO L87 Difference]: Start difference. First operand 1011 states and 3514 transitions. Second operand has 8 states, 7 states have (on average 1.4285714285714286) internal successors, (10), 7 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) [2023-11-19 04:58:55,302 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 04:58:55,302 INFO L93 Difference]: Finished difference Result 1014 states and 3520 transitions. [2023-11-19 04:58:55,303 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-19 04:58:55,303 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 1.4285714285714286) internal successors, (10), 7 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 3 [2023-11-19 04:58:55,303 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 04:58:55,314 INFO L225 Difference]: With dead ends: 1014 [2023-11-19 04:58:55,315 INFO L226 Difference]: Without dead ends: 1014 [2023-11-19 04:58:55,315 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=32, Invalid=40, Unknown=0, NotChecked=0, Total=72 [2023-11-19 04:58:55,316 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 276 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 277 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 276 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-11-19 04:58:55,316 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 0 Invalid, 277 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 276 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-11-19 04:58:55,320 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1014 states. [2023-11-19 04:58:55,361 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1014 to 1014. [2023-11-19 04:58:55,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1014 states, 869 states have (on average 4.050632911392405) internal successors, (3520), 1013 states have internal predecessors, (3520), 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) [2023-11-19 04:58:55,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1014 states to 1014 states and 3520 transitions. [2023-11-19 04:58:55,369 INFO L78 Accepts]: Start accepts. Automaton has 1014 states and 3520 transitions. Word has length 3 [2023-11-19 04:58:55,370 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 04:58:55,370 INFO L495 AbstractCegarLoop]: Abstraction has 1014 states and 3520 transitions. [2023-11-19 04:58:55,370 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 1.4285714285714286) internal successors, (10), 7 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) [2023-11-19 04:58:55,370 INFO L276 IsEmpty]: Start isEmpty. Operand 1014 states and 3520 transitions. [2023-11-19 04:58:55,370 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2023-11-19 04:58:55,370 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 04:58:55,371 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2023-11-19 04:58:55,402 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d15baa9b-c6f7-49cb-9a54-32dfb3f89a32/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-11-19 04:58:55,588 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d15baa9b-c6f7-49cb-9a54-32dfb3f89a32/bin/utaipan-verify-t7M7D8N6sZ/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 [2023-11-19 04:58:55,788 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d15baa9b-c6f7-49cb-9a54-32dfb3f89a32/bin/utaipan-verify-t7M7D8N6sZ/cvc4 --incremental --print-success --lang smt (8)] Ended with exit code 0 [2023-11-19 04:58:55,986 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d15baa9b-c6f7-49cb-9a54-32dfb3f89a32/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d15baa9b-c6f7-49cb-9a54-32dfb3f89a32/bin/utaipan-verify-t7M7D8N6sZ/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 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d15baa9b-c6f7-49cb-9a54-32dfb3f89a32/bin/utaipan-verify-t7M7D8N6sZ/cvc4 --incremental --print-success --lang smt [2023-11-19 04:58:55,987 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 40 more)] === [2023-11-19 04:58:55,987 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 04:58:55,987 INFO L85 PathProgramCache]: Analyzing trace with hash 816189308, now seen corresponding path program 1 times [2023-11-19 04:58:55,988 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-19 04:58:55,988 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1927777866] [2023-11-19 04:58:55,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:58:55,988 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 [2023-11-19 04:58:55,988 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d15baa9b-c6f7-49cb-9a54-32dfb3f89a32/bin/utaipan-verify-t7M7D8N6sZ/mathsat [2023-11-19 04:58:55,989 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d15baa9b-c6f7-49cb-9a54-32dfb3f89a32/bin/utaipan-verify-t7M7D8N6sZ/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) [2023-11-19 04:58:55,990 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d15baa9b-c6f7-49cb-9a54-32dfb3f89a32/bin/utaipan-verify-t7M7D8N6sZ/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 [2023-11-19 04:58:56,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:58:56,083 INFO L262 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-19 04:58:56,084 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 04:58:56,117 INFO L349 Elim1Store]: treesize reduction 37, result has 15.9 percent of original size [2023-11-19 04:58:56,118 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 22 [2023-11-19 04:58:56,141 INFO L349 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2023-11-19 04:58:56,142 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 22 [2023-11-19 04:58:56,156 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 04:58:56,178 INFO L349 Elim1Store]: treesize reduction 37, result has 15.9 percent of original size [2023-11-19 04:58:56,179 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 22 [2023-11-19 04:58:56,204 INFO L349 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2023-11-19 04:58:56,204 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 1 case distinctions, treesize of input 17 treesize of output 22 [2023-11-19 04:58:56,220 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 04:58:56,244 INFO L349 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2023-11-19 04:58:56,244 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 22 [2023-11-19 04:58:56,259 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 04:58:56,296 INFO L349 Elim1Store]: treesize reduction 37, result has 15.9 percent of original size [2023-11-19 04:58:56,296 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 29 treesize of output 22 [2023-11-19 04:58:56,330 INFO L349 Elim1Store]: treesize reduction 37, result has 15.9 percent of original size [2023-11-19 04:58:56,330 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 22 treesize of output 22 [2023-11-19 04:58:56,351 INFO L349 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2023-11-19 04:58:56,351 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 1 case distinctions, treesize of input 17 treesize of output 22 [2023-11-19 04:58:56,607 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-19 04:58:56,607 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 04:58:56,607 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-19 04:58:56,607 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1927777866] [2023-11-19 04:58:56,607 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1927777866] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 04:58:56,607 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 04:58:56,608 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-19 04:58:56,608 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1923450471] [2023-11-19 04:58:56,608 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 04:58:56,608 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 04:58:56,608 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-19 04:58:56,609 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 04:58:56,609 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 04:58:56,609 INFO L87 Difference]: Start difference. First operand 1014 states and 3520 transitions. Second operand has 3 states, 2 states have (on average 2.5) 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) [2023-11-19 04:58:56,912 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 04:58:56,912 INFO L93 Difference]: Finished difference Result 965 states and 3373 transitions. [2023-11-19 04:58:56,912 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 04:58:56,912 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) 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 [2023-11-19 04:58:56,912 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 04:58:56,923 INFO L225 Difference]: With dead ends: 965 [2023-11-19 04:58:56,923 INFO L226 Difference]: Without dead ends: 965 [2023-11-19 04:58:56,923 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 [2023-11-19 04:58:56,924 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 40 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-19 04:58:56,924 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [40 Valid, 0 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-19 04:58:56,927 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 965 states. [2023-11-19 04:58:56,953 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 965 to 965. [2023-11-19 04:58:56,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 965 states, 840 states have (on average 4.015476190476191) internal successors, (3373), 964 states have internal predecessors, (3373), 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) [2023-11-19 04:58:56,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 965 states to 965 states and 3373 transitions. [2023-11-19 04:58:56,961 INFO L78 Accepts]: Start accepts. Automaton has 965 states and 3373 transitions. Word has length 5 [2023-11-19 04:58:56,962 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 04:58:56,962 INFO L495 AbstractCegarLoop]: Abstraction has 965 states and 3373 transitions. [2023-11-19 04:58:56,962 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) 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) [2023-11-19 04:58:56,962 INFO L276 IsEmpty]: Start isEmpty. Operand 965 states and 3373 transitions. [2023-11-19 04:58:56,962 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2023-11-19 04:58:56,962 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 04:58:56,962 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2023-11-19 04:58:56,973 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d15baa9b-c6f7-49cb-9a54-32dfb3f89a32/bin/utaipan-verify-t7M7D8N6sZ/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)] Forceful destruction successful, exit code 0 [2023-11-19 04:58:57,165 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d15baa9b-c6f7-49cb-9a54-32dfb3f89a32/bin/utaipan-verify-t7M7D8N6sZ/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 [2023-11-19 04:58:57,165 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread1Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread1Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 40 more)] === [2023-11-19 04:58:57,166 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 04:58:57,166 INFO L85 PathProgramCache]: Analyzing trace with hash 816189309, now seen corresponding path program 1 times [2023-11-19 04:58:57,166 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-19 04:58:57,166 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2046170145] [2023-11-19 04:58:57,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:58:57,166 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 [2023-11-19 04:58:57,166 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d15baa9b-c6f7-49cb-9a54-32dfb3f89a32/bin/utaipan-verify-t7M7D8N6sZ/mathsat [2023-11-19 04:58:57,167 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d15baa9b-c6f7-49cb-9a54-32dfb3f89a32/bin/utaipan-verify-t7M7D8N6sZ/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) [2023-11-19 04:58:57,172 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d15baa9b-c6f7-49cb-9a54-32dfb3f89a32/bin/utaipan-verify-t7M7D8N6sZ/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2023-11-19 04:58:57,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:58:57,276 INFO L262 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 12 conjunts are in the unsatisfiable core [2023-11-19 04:58:57,278 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 04:58:57,303 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 04:58:57,313 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 13 [2023-11-19 04:58:57,336 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 04:58:57,359 INFO L349 Elim1Store]: treesize reduction 13, result has 40.9 percent of original size [2023-11-19 04:58:57,360 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 16 treesize of output 17 [2023-11-19 04:58:57,365 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 04:58:57,370 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2023-11-19 04:58:57,396 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 04:58:57,410 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 04:58:57,430 INFO L349 Elim1Store]: treesize reduction 9, result has 35.7 percent of original size [2023-11-19 04:58:57,430 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 16 treesize of output 13 [2023-11-19 04:58:57,439 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2023-11-19 04:58:57,456 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 04:58:57,463 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 04:58:57,464 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 13 [2023-11-19 04:58:57,468 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 04:58:57,472 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2023-11-19 04:58:57,489 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 04:58:57,503 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 04:58:57,521 INFO L349 Elim1Store]: treesize reduction 9, result has 35.7 percent of original size [2023-11-19 04:58:57,521 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 16 treesize of output 13 [2023-11-19 04:58:57,542 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 04:58:57,548 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 04:58:57,549 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 13 [2023-11-19 04:58:57,553 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 04:58:57,592 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 04:58:57,612 INFO L190 IndexEqualityManager]: detected not equals via solver