./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test2-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 0e0057cc Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a20cfce-99f6-4121-ba6d-6a0c58cac3fc/bin/utaipan-verify-nQ1chXbOIh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a20cfce-99f6-4121-ba6d-6a0c58cac3fc/bin/utaipan-verify-nQ1chXbOIh/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a20cfce-99f6-4121-ba6d-6a0c58cac3fc/bin/utaipan-verify-nQ1chXbOIh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a20cfce-99f6-4121-ba6d-6a0c58cac3fc/bin/utaipan-verify-nQ1chXbOIh/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test2-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a20cfce-99f6-4121-ba6d-6a0c58cac3fc/bin/utaipan-verify-nQ1chXbOIh/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a20cfce-99f6-4121-ba6d-6a0c58cac3fc/bin/utaipan-verify-nQ1chXbOIh --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 da01f7e29b47732481465e941f69a1c8f9dd5529ae81cb8448eb7568570e2356 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-12-02 14:47:23,361 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-02 14:47:23,441 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a20cfce-99f6-4121-ba6d-6a0c58cac3fc/bin/utaipan-verify-nQ1chXbOIh/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf [2023-12-02 14:47:23,446 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-02 14:47:23,447 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-02 14:47:23,477 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-02 14:47:23,477 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-02 14:47:23,478 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-02 14:47:23,479 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-02 14:47:23,479 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-02 14:47:23,480 INFO L153 SettingsManager]: * User list type=DISABLED [2023-12-02 14:47:23,481 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-12-02 14:47:23,481 INFO L153 SettingsManager]: * Explicit value domain=true [2023-12-02 14:47:23,482 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-12-02 14:47:23,482 INFO L153 SettingsManager]: * Octagon Domain=false [2023-12-02 14:47:23,483 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-12-02 14:47:23,484 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-12-02 14:47:23,484 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-12-02 14:47:23,485 INFO L153 SettingsManager]: * Interval Domain=false [2023-12-02 14:47:23,485 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-12-02 14:47:23,486 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-12-02 14:47:23,487 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-12-02 14:47:23,488 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-02 14:47:23,488 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-02 14:47:23,489 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-02 14:47:23,489 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-02 14:47:23,490 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-02 14:47:23,490 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-02 14:47:23,491 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-02 14:47:23,491 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-12-02 14:47:23,492 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-12-02 14:47:23,492 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-12-02 14:47:23,493 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-02 14:47:23,493 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-12-02 14:47:23,493 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-12-02 14:47:23,494 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-02 14:47:23,494 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-02 14:47:23,494 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-02 14:47:23,494 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-02 14:47:23,495 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-02 14:47:23,495 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-02 14:47:23,495 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-02 14:47:23,496 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-02 14:47:23,496 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-12-02 14:47:23,496 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-02 14:47:23,496 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-02 14:47:23,496 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-12-02 14:47:23,497 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-02 14:47:23,497 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_0a20cfce-99f6-4121-ba6d-6a0c58cac3fc/bin/utaipan-verify-nQ1chXbOIh/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a20cfce-99f6-4121-ba6d-6a0c58cac3fc/bin/utaipan-verify-nQ1chXbOIh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> da01f7e29b47732481465e941f69a1c8f9dd5529ae81cb8448eb7568570e2356 [2023-12-02 14:47:23,733 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-02 14:47:23,754 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-02 14:47:23,756 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-02 14:47:23,757 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-02 14:47:23,758 INFO L274 PluginConnector]: CDTParser initialized [2023-12-02 14:47:23,759 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a20cfce-99f6-4121-ba6d-6a0c58cac3fc/bin/utaipan-verify-nQ1chXbOIh/../../sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test2-2.i [2023-12-02 14:47:27,208 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-02 14:47:27,551 INFO L384 CDTParser]: Found 1 translation units. [2023-12-02 14:47:27,552 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a20cfce-99f6-4121-ba6d-6a0c58cac3fc/sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test2-2.i [2023-12-02 14:47:27,576 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a20cfce-99f6-4121-ba6d-6a0c58cac3fc/bin/utaipan-verify-nQ1chXbOIh/data/01d828ef6/284239511109463ebf2f859eb293e1d0/FLAG7a7ed0479 [2023-12-02 14:47:27,594 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a20cfce-99f6-4121-ba6d-6a0c58cac3fc/bin/utaipan-verify-nQ1chXbOIh/data/01d828ef6/284239511109463ebf2f859eb293e1d0 [2023-12-02 14:47:27,597 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-02 14:47:27,599 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-12-02 14:47:27,601 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-02 14:47:27,601 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-02 14:47:27,608 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-02 14:47:27,609 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 02:47:27" (1/1) ... [2023-12-02 14:47:27,611 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5034ec70 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:47:27, skipping insertion in model container [2023-12-02 14:47:27,611 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 02:47:27" (1/1) ... [2023-12-02 14:47:27,705 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-02 14:47:28,388 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 14:47:28,403 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) [2023-12-02 14:47:28,404 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@4455def and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:47:28, skipping insertion in model container [2023-12-02 14:47:28,404 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-02 14:47:28,405 INFO L186 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2023-12-02 14:47:28,407 INFO L158 Benchmark]: Toolchain (without parser) took 806.86ms. Allocated memory is still 148.9MB. Free memory was 103.1MB in the beginning and 82.3MB in the end (delta: 20.8MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. [2023-12-02 14:47:28,408 INFO L158 Benchmark]: CDTParser took 0.22ms. Allocated memory is still 102.8MB. Free memory was 71.2MB in the beginning and 71.1MB in the end (delta: 29.8kB). There was no memory consumed. Max. memory is 16.1GB. [2023-12-02 14:47:28,409 INFO L158 Benchmark]: CACSL2BoogieTranslator took 803.68ms. Allocated memory is still 148.9MB. Free memory was 102.6MB in the beginning and 82.3MB in the end (delta: 20.3MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. [2023-12-02 14:47:28,412 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22ms. Allocated memory is still 102.8MB. Free memory was 71.2MB in the beginning and 71.1MB in the end (delta: 29.8kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 803.68ms. Allocated memory is still 148.9MB. Free memory was 102.6MB in the beginning and 82.3MB in the end (delta: 20.3MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 815]: 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_0a20cfce-99f6-4121-ba6d-6a0c58cac3fc/bin/utaipan-verify-nQ1chXbOIh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a20cfce-99f6-4121-ba6d-6a0c58cac3fc/bin/utaipan-verify-nQ1chXbOIh/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a20cfce-99f6-4121-ba6d-6a0c58cac3fc/bin/utaipan-verify-nQ1chXbOIh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a20cfce-99f6-4121-ba6d-6a0c58cac3fc/bin/utaipan-verify-nQ1chXbOIh/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test2-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a20cfce-99f6-4121-ba6d-6a0c58cac3fc/bin/utaipan-verify-nQ1chXbOIh/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a20cfce-99f6-4121-ba6d-6a0c58cac3fc/bin/utaipan-verify-nQ1chXbOIh --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 da01f7e29b47732481465e941f69a1c8f9dd5529ae81cb8448eb7568570e2356 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-12-02 14:47:30,567 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-02 14:47:30,663 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a20cfce-99f6-4121-ba6d-6a0c58cac3fc/bin/utaipan-verify-nQ1chXbOIh/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf [2023-12-02 14:47:30,671 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-02 14:47:30,672 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-02 14:47:30,707 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-02 14:47:30,708 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-02 14:47:30,709 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-02 14:47:30,710 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-02 14:47:30,711 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-02 14:47:30,711 INFO L153 SettingsManager]: * User list type=DISABLED [2023-12-02 14:47:30,712 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-12-02 14:47:30,713 INFO L153 SettingsManager]: * Explicit value domain=true [2023-12-02 14:47:30,713 INFO L153 SettingsManager]: * Octagon Domain=false [2023-12-02 14:47:30,714 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-12-02 14:47:30,715 INFO L153 SettingsManager]: * Interval Domain=false [2023-12-02 14:47:30,716 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-02 14:47:30,717 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-02 14:47:30,717 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-02 14:47:30,718 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-02 14:47:30,719 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-02 14:47:30,720 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-02 14:47:30,720 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-02 14:47:30,721 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-12-02 14:47:30,721 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-12-02 14:47:30,722 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-12-02 14:47:30,722 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-02 14:47:30,723 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-12-02 14:47:30,723 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-12-02 14:47:30,724 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-12-02 14:47:30,724 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-12-02 14:47:30,725 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-02 14:47:30,725 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-02 14:47:30,726 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-02 14:47:30,726 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-02 14:47:30,726 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-02 14:47:30,727 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-02 14:47:30,727 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-02 14:47:30,727 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-02 14:47:30,728 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-02 14:47:30,728 INFO L153 SettingsManager]: * Trace refinement strategy=WALRUS [2023-12-02 14:47:30,728 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-12-02 14:47:30,729 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-02 14:47:30,729 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-12-02 14:47:30,729 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-02 14:47:30,729 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_0a20cfce-99f6-4121-ba6d-6a0c58cac3fc/bin/utaipan-verify-nQ1chXbOIh/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a20cfce-99f6-4121-ba6d-6a0c58cac3fc/bin/utaipan-verify-nQ1chXbOIh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> da01f7e29b47732481465e941f69a1c8f9dd5529ae81cb8448eb7568570e2356 [2023-12-02 14:47:31,127 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-02 14:47:31,153 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-02 14:47:31,156 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-02 14:47:31,158 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-02 14:47:31,158 INFO L274 PluginConnector]: CDTParser initialized [2023-12-02 14:47:31,160 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a20cfce-99f6-4121-ba6d-6a0c58cac3fc/bin/utaipan-verify-nQ1chXbOIh/../../sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test2-2.i [2023-12-02 14:47:34,619 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-02 14:47:34,973 INFO L384 CDTParser]: Found 1 translation units. [2023-12-02 14:47:34,974 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a20cfce-99f6-4121-ba6d-6a0c58cac3fc/sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test2-2.i [2023-12-02 14:47:34,997 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a20cfce-99f6-4121-ba6d-6a0c58cac3fc/bin/utaipan-verify-nQ1chXbOIh/data/345976726/c71d772b0d19445296a0dabc5f639fcc/FLAG6a21a6555 [2023-12-02 14:47:35,016 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a20cfce-99f6-4121-ba6d-6a0c58cac3fc/bin/utaipan-verify-nQ1chXbOIh/data/345976726/c71d772b0d19445296a0dabc5f639fcc [2023-12-02 14:47:35,020 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-02 14:47:35,022 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-12-02 14:47:35,024 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-02 14:47:35,024 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-02 14:47:35,030 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-02 14:47:35,031 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 02:47:35" (1/1) ... [2023-12-02 14:47:35,032 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6ab92dc8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:47:35, skipping insertion in model container [2023-12-02 14:47:35,033 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 02:47:35" (1/1) ... [2023-12-02 14:47:35,155 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-02 14:47:35,836 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 14:47:35,853 INFO L199 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2023-12-02 14:47:35,883 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-02 14:47:36,004 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 14:47:36,015 INFO L202 MainTranslator]: Completed pre-run [2023-12-02 14:47:36,110 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 14:47:36,154 WARN L675 CHandler]: The function memcmp is called, but not defined or handled by StandardFunctionHandler. [2023-12-02 14:47:36,161 INFO L206 MainTranslator]: Completed translation [2023-12-02 14:47:36,161 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:47:36 WrapperNode [2023-12-02 14:47:36,161 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-02 14:47:36,162 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-02 14:47:36,162 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-02 14:47:36,163 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-02 14:47:36,169 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:47:36" (1/1) ... [2023-12-02 14:47:36,212 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:47:36" (1/1) ... [2023-12-02 14:47:36,284 INFO L138 Inliner]: procedures = 211, calls = 288, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 1060 [2023-12-02 14:47:36,284 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-02 14:47:36,285 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-02 14:47:36,285 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-02 14:47:36,286 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-02 14:47:36,297 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:47:36" (1/1) ... [2023-12-02 14:47:36,298 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:47:36" (1/1) ... [2023-12-02 14:47:36,314 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:47:36" (1/1) ... [2023-12-02 14:47:36,315 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:47:36" (1/1) ... [2023-12-02 14:47:36,400 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:47:36" (1/1) ... [2023-12-02 14:47:36,413 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:47:36" (1/1) ... [2023-12-02 14:47:36,420 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:47:36" (1/1) ... [2023-12-02 14:47:36,428 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:47:36" (1/1) ... [2023-12-02 14:47:36,442 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-02 14:47:36,443 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-02 14:47:36,443 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-02 14:47:36,443 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-02 14:47:36,444 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:47:36" (1/1) ... [2023-12-02 14:47:36,450 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-02 14:47:36,461 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a20cfce-99f6-4121-ba6d-6a0c58cac3fc/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 14:47:36,475 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a20cfce-99f6-4121-ba6d-6a0c58cac3fc/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-12-02 14:47:36,479 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a20cfce-99f6-4121-ba6d-6a0c58cac3fc/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-12-02 14:47:36,522 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2023-12-02 14:47:36,523 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2023-12-02 14:47:36,523 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2023-12-02 14:47:36,523 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2023-12-02 14:47:36,523 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2023-12-02 14:47:36,523 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2023-12-02 14:47:36,524 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-12-02 14:47:36,524 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2023-12-02 14:47:36,524 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-12-02 14:47:36,524 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-12-02 14:47:36,525 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2023-12-02 14:47:36,525 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2023-12-02 14:47:36,525 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-12-02 14:47:36,525 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-12-02 14:47:36,526 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-12-02 14:47:36,526 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-02 14:47:36,526 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-12-02 14:47:36,526 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-02 14:47:36,527 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-02 14:47:36,772 INFO L241 CfgBuilder]: Building ICFG [2023-12-02 14:47:36,774 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-02 14:47:36,797 WARN L821 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2023-12-02 14:47:42,170 INFO L282 CfgBuilder]: Performing block encoding [2023-12-02 14:47:42,350 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-02 14:47:42,351 INFO L309 CfgBuilder]: Removed 63 assume(true) statements. [2023-12-02 14:47:42,352 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 02:47:42 BoogieIcfgContainer [2023-12-02 14:47:42,352 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-02 14:47:42,355 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-02 14:47:42,356 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-02 14:47:42,358 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-02 14:47:42,359 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 02:47:35" (1/3) ... [2023-12-02 14:47:42,359 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@67635645 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 02:47:42, skipping insertion in model container [2023-12-02 14:47:42,359 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:47:36" (2/3) ... [2023-12-02 14:47:42,360 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@67635645 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 02:47:42, skipping insertion in model container [2023-12-02 14:47:42,360 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 02:47:42" (3/3) ... [2023-12-02 14:47:42,361 INFO L112 eAbstractionObserver]: Analyzing ICFG uthash_OAT_test2-2.i [2023-12-02 14:47:42,380 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-02 14:47:42,380 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 535 error locations. [2023-12-02 14:47:42,449 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-02 14:47:42,455 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;@67b3d117, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-02 14:47:42,455 INFO L358 AbstractCegarLoop]: Starting to check reachability of 535 error locations. [2023-12-02 14:47:42,464 INFO L276 IsEmpty]: Start isEmpty. Operand has 984 states, 438 states have (on average 2.5136986301369864) internal successors, (1101), 977 states have internal predecessors, (1101), 10 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (10), 6 states have call predecessors, (10), 10 states have call successors, (10) [2023-12-02 14:47:42,470 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2023-12-02 14:47:42,470 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 14:47:42,471 INFO L195 NwaCegarLoop]: trace histogram [1, 1] [2023-12-02 14:47:42,472 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 532 more)] === [2023-12-02 14:47:42,478 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 14:47:42,478 INFO L85 PathProgramCache]: Analyzing trace with hash 55202, now seen corresponding path program 1 times [2023-12-02 14:47:42,490 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 14:47:42,491 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [651034258] [2023-12-02 14:47:42,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 14:47:42,491 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 [2023-12-02 14:47:42,492 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a20cfce-99f6-4121-ba6d-6a0c58cac3fc/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 14:47:42,493 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a20cfce-99f6-4121-ba6d-6a0c58cac3fc/bin/utaipan-verify-nQ1chXbOIh/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) [2023-12-02 14:47:42,496 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a20cfce-99f6-4121-ba6d-6a0c58cac3fc/bin/utaipan-verify-nQ1chXbOIh/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 [2023-12-02 14:47:42,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 14:47:42,687 INFO L262 TraceCheckSpWp]: Trace formula consists of 24 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-02 14:47:42,694 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 14:47:42,780 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2023-12-02 14:47:42,792 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 14:47:42,793 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 14:47:42,793 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 14:47:42,794 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [651034258] [2023-12-02 14:47:42,794 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [651034258] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 14:47:42,795 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 14:47:42,795 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-12-02 14:47:42,796 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1397212575] [2023-12-02 14:47:42,797 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 14:47:42,802 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 14:47:42,802 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 14:47:42,829 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 14:47:42,830 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 14:47:42,834 INFO L87 Difference]: Start difference. First operand has 984 states, 438 states have (on average 2.5136986301369864) internal successors, (1101), 977 states have internal predecessors, (1101), 10 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (10), 6 states have call predecessors, (10), 10 states have call successors, (10) 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) [2023-12-02 14:47:45,351 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 14:47:45,352 INFO L93 Difference]: Finished difference Result 1136 states and 1212 transitions. [2023-12-02 14:47:45,353 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 14:47:45,354 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 [2023-12-02 14:47:45,355 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 14:47:45,373 INFO L225 Difference]: With dead ends: 1136 [2023-12-02 14:47:45,374 INFO L226 Difference]: Without dead ends: 1135 [2023-12-02 14:47:45,375 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 [2023-12-02 14:47:45,378 INFO L413 NwaCegarLoop]: 546 mSDtfsCounter, 906 mSDsluCounter, 128 mSDsCounter, 0 mSdLazyCounter, 653 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 914 SdHoareTripleChecker+Valid, 674 SdHoareTripleChecker+Invalid, 669 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 653 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2023-12-02 14:47:45,379 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [914 Valid, 674 Invalid, 669 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 653 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2023-12-02 14:47:45,397 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1135 states. [2023-12-02 14:47:45,479 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1135 to 970. [2023-12-02 14:47:45,483 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 970 states, 441 states have (on average 2.312925170068027) internal successors, (1020), 963 states have internal predecessors, (1020), 10 states have call successors, (10), 3 states have call predecessors, (10), 2 states have return successors, (8), 4 states have call predecessors, (8), 8 states have call successors, (8) [2023-12-02 14:47:45,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 970 states to 970 states and 1038 transitions. [2023-12-02 14:47:45,489 INFO L78 Accepts]: Start accepts. Automaton has 970 states and 1038 transitions. Word has length 2 [2023-12-02 14:47:45,489 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 14:47:45,489 INFO L495 AbstractCegarLoop]: Abstraction has 970 states and 1038 transitions. [2023-12-02 14:47:45,489 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) [2023-12-02 14:47:45,490 INFO L276 IsEmpty]: Start isEmpty. Operand 970 states and 1038 transitions. [2023-12-02 14:47:45,490 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2023-12-02 14:47:45,490 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 14:47:45,490 INFO L195 NwaCegarLoop]: trace histogram [1, 1] [2023-12-02 14:47:45,494 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a20cfce-99f6-4121-ba6d-6a0c58cac3fc/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2023-12-02 14:47:45,691 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a20cfce-99f6-4121-ba6d-6a0c58cac3fc/bin/utaipan-verify-nQ1chXbOIh/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 [2023-12-02 14:47:45,692 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 532 more)] === [2023-12-02 14:47:45,693 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 14:47:45,693 INFO L85 PathProgramCache]: Analyzing trace with hash 55203, now seen corresponding path program 1 times [2023-12-02 14:47:45,693 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 14:47:45,693 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1821572603] [2023-12-02 14:47:45,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 14:47:45,694 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 [2023-12-02 14:47:45,694 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a20cfce-99f6-4121-ba6d-6a0c58cac3fc/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 14:47:45,696 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a20cfce-99f6-4121-ba6d-6a0c58cac3fc/bin/utaipan-verify-nQ1chXbOIh/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) [2023-12-02 14:47:45,699 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a20cfce-99f6-4121-ba6d-6a0c58cac3fc/bin/utaipan-verify-nQ1chXbOIh/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 [2023-12-02 14:47:45,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 14:47:45,811 INFO L262 TraceCheckSpWp]: Trace formula consists of 24 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-02 14:47:45,814 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 14:47:45,828 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-12-02 14:47:45,841 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 14:47:45,841 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 14:47:45,842 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 14:47:45,842 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1821572603] [2023-12-02 14:47:45,842 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1821572603] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 14:47:45,842 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 14:47:45,843 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-12-02 14:47:45,843 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [684149331] [2023-12-02 14:47:45,843 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 14:47:45,844 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 14:47:45,844 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 14:47:45,845 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 14:47:45,845 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 14:47:45,845 INFO L87 Difference]: Start difference. First operand 970 states and 1038 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) [2023-12-02 14:47:49,719 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 14:47:49,719 INFO L93 Difference]: Finished difference Result 1351 states and 1462 transitions. [2023-12-02 14:47:49,720 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 14:47:49,720 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 [2023-12-02 14:47:49,721 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 14:47:49,728 INFO L225 Difference]: With dead ends: 1351 [2023-12-02 14:47:49,728 INFO L226 Difference]: Without dead ends: 1351 [2023-12-02 14:47:49,729 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 [2023-12-02 14:47:49,730 INFO L413 NwaCegarLoop]: 774 mSDtfsCounter, 413 mSDsluCounter, 499 mSDsCounter, 0 mSdLazyCounter, 784 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 418 SdHoareTripleChecker+Valid, 1273 SdHoareTripleChecker+Invalid, 789 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 784 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.8s IncrementalHoareTripleChecker+Time [2023-12-02 14:47:49,731 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [418 Valid, 1273 Invalid, 789 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 784 Invalid, 0 Unknown, 0 Unchecked, 3.8s Time] [2023-12-02 14:47:49,735 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1351 states. [2023-12-02 14:47:49,772 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1351 to 1082. [2023-12-02 14:47:49,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1082 states, 549 states have (on average 2.255009107468124) internal successors, (1238), 1075 states have internal predecessors, (1238), 15 states have call successors, (15), 3 states have call predecessors, (15), 2 states have return successors, (13), 5 states have call predecessors, (13), 13 states have call successors, (13) [2023-12-02 14:47:49,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1082 states to 1082 states and 1266 transitions. [2023-12-02 14:47:49,782 INFO L78 Accepts]: Start accepts. Automaton has 1082 states and 1266 transitions. Word has length 2 [2023-12-02 14:47:49,783 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 14:47:49,783 INFO L495 AbstractCegarLoop]: Abstraction has 1082 states and 1266 transitions. [2023-12-02 14:47:49,783 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) [2023-12-02 14:47:49,783 INFO L276 IsEmpty]: Start isEmpty. Operand 1082 states and 1266 transitions. [2023-12-02 14:47:49,784 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2023-12-02 14:47:49,784 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 14:47:49,784 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2023-12-02 14:47:49,786 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a20cfce-99f6-4121-ba6d-6a0c58cac3fc/bin/utaipan-verify-nQ1chXbOIh/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)] Ended with exit code 0 [2023-12-02 14:47:49,986 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a20cfce-99f6-4121-ba6d-6a0c58cac3fc/bin/utaipan-verify-nQ1chXbOIh/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 [2023-12-02 14:47:49,986 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 532 more)] === [2023-12-02 14:47:49,987 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 14:47:49,987 INFO L85 PathProgramCache]: Analyzing trace with hash -559486548, now seen corresponding path program 1 times [2023-12-02 14:47:49,988 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 14:47:49,988 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1160074973] [2023-12-02 14:47:49,989 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 14:47:49,989 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 [2023-12-02 14:47:49,989 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a20cfce-99f6-4121-ba6d-6a0c58cac3fc/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 14:47:49,990 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a20cfce-99f6-4121-ba6d-6a0c58cac3fc/bin/utaipan-verify-nQ1chXbOIh/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) [2023-12-02 14:47:49,991 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a20cfce-99f6-4121-ba6d-6a0c58cac3fc/bin/utaipan-verify-nQ1chXbOIh/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 [2023-12-02 14:47:50,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 14:47:50,146 INFO L262 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-02 14:47:50,150 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 14:47:50,165 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2023-12-02 14:47:50,175 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-12-02 14:47:50,259 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 14:47:50,261 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 0 case distinctions, treesize of input 14 treesize of output 9 [2023-12-02 14:47:50,288 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2023-12-02 14:47:50,289 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2023-12-02 14:47:50,316 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 14:47:50,317 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 14:47:50,317 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 14:47:50,317 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1160074973] [2023-12-02 14:47:50,317 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1160074973] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 14:47:50,318 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 14:47:50,318 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-02 14:47:50,318 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [822646940] [2023-12-02 14:47:50,318 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 14:47:50,318 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-02 14:47:50,319 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 14:47:50,319 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-02 14:47:50,319 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-02 14:47:50,320 INFO L87 Difference]: Start difference. First operand 1082 states and 1266 transitions. Second operand has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 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) [2023-12-02 14:47:54,240 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 14:47:54,240 INFO L93 Difference]: Finished difference Result 1236 states and 1428 transitions. [2023-12-02 14:47:54,241 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-02 14:47:54,242 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 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 6 [2023-12-02 14:47:54,242 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 14:47:54,249 INFO L225 Difference]: With dead ends: 1236 [2023-12-02 14:47:54,249 INFO L226 Difference]: Without dead ends: 1236 [2023-12-02 14:47:54,249 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-02 14:47:54,251 INFO L413 NwaCegarLoop]: 283 mSDtfsCounter, 2045 mSDsluCounter, 61 mSDsCounter, 0 mSdLazyCounter, 969 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2053 SdHoareTripleChecker+Valid, 344 SdHoareTripleChecker+Invalid, 997 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 969 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.8s IncrementalHoareTripleChecker+Time [2023-12-02 14:47:54,252 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2053 Valid, 344 Invalid, 997 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 969 Invalid, 0 Unknown, 0 Unchecked, 3.8s Time] [2023-12-02 14:47:54,256 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1236 states. [2023-12-02 14:47:54,280 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1236 to 959. [2023-12-02 14:47:54,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 959 states, 441 states have (on average 2.2857142857142856) internal successors, (1008), 952 states have internal predecessors, (1008), 10 states have call successors, (10), 3 states have call predecessors, (10), 2 states have return successors, (8), 4 states have call predecessors, (8), 8 states have call successors, (8) [2023-12-02 14:47:54,288 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 959 states to 959 states and 1026 transitions. [2023-12-02 14:47:54,288 INFO L78 Accepts]: Start accepts. Automaton has 959 states and 1026 transitions. Word has length 6 [2023-12-02 14:47:54,289 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 14:47:54,289 INFO L495 AbstractCegarLoop]: Abstraction has 959 states and 1026 transitions. [2023-12-02 14:47:54,289 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 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) [2023-12-02 14:47:54,289 INFO L276 IsEmpty]: Start isEmpty. Operand 959 states and 1026 transitions. [2023-12-02 14:47:54,290 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2023-12-02 14:47:54,290 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 14:47:54,290 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-12-02 14:47:54,293 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a20cfce-99f6-4121-ba6d-6a0c58cac3fc/bin/utaipan-verify-nQ1chXbOIh/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)] Ended with exit code 0 [2023-12-02 14:47:54,493 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a20cfce-99f6-4121-ba6d-6a0c58cac3fc/bin/utaipan-verify-nQ1chXbOIh/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 [2023-12-02 14:47:54,494 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 532 more)] === [2023-12-02 14:47:54,494 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 14:47:54,494 INFO L85 PathProgramCache]: Analyzing trace with hash -164213821, now seen corresponding path program 1 times [2023-12-02 14:47:54,495 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 14:47:54,495 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1422548224] [2023-12-02 14:47:54,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 14:47:54,496 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 [2023-12-02 14:47:54,496 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a20cfce-99f6-4121-ba6d-6a0c58cac3fc/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 14:47:54,497 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a20cfce-99f6-4121-ba6d-6a0c58cac3fc/bin/utaipan-verify-nQ1chXbOIh/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) [2023-12-02 14:47:54,498 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a20cfce-99f6-4121-ba6d-6a0c58cac3fc/bin/utaipan-verify-nQ1chXbOIh/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 [2023-12-02 14:47:54,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 14:47:54,653 INFO L262 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-02 14:47:54,656 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 14:47:54,663 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2023-12-02 14:47:54,678 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 14:47:54,679 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 14:47:54,679 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 14:47:54,679 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1422548224] [2023-12-02 14:47:54,679 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1422548224] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 14:47:54,679 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 14:47:54,680 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-02 14:47:54,680 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1527843914] [2023-12-02 14:47:54,680 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 14:47:54,680 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 14:47:54,680 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 14:47:54,681 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 14:47:54,681 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 14:47:54,681 INFO L87 Difference]: Start difference. First operand 959 states and 1026 transitions. Second operand has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 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) [2023-12-02 14:47:57,152 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 14:47:57,152 INFO L93 Difference]: Finished difference Result 1112 states and 1211 transitions. [2023-12-02 14:47:57,154 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 14:47:57,155 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 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 7 [2023-12-02 14:47:57,155 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 14:47:57,160 INFO L225 Difference]: With dead ends: 1112 [2023-12-02 14:47:57,160 INFO L226 Difference]: Without dead ends: 1112 [2023-12-02 14:47:57,160 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 14:47:57,161 INFO L413 NwaCegarLoop]: 743 mSDtfsCounter, 732 mSDsluCounter, 241 mSDsCounter, 0 mSdLazyCounter, 678 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 740 SdHoareTripleChecker+Valid, 984 SdHoareTripleChecker+Invalid, 729 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 678 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2023-12-02 14:47:57,162 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [740 Valid, 984 Invalid, 729 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 678 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2023-12-02 14:47:57,164 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1112 states. [2023-12-02 14:47:57,185 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1112 to 912. [2023-12-02 14:47:57,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 912 states, 441 states have (on average 2.179138321995465) internal successors, (961), 905 states have internal predecessors, (961), 10 states have call successors, (10), 3 states have call predecessors, (10), 2 states have return successors, (8), 4 states have call predecessors, (8), 8 states have call successors, (8) [2023-12-02 14:47:57,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 912 states to 912 states and 979 transitions. [2023-12-02 14:47:57,192 INFO L78 Accepts]: Start accepts. Automaton has 912 states and 979 transitions. Word has length 7 [2023-12-02 14:47:57,193 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 14:47:57,193 INFO L495 AbstractCegarLoop]: Abstraction has 912 states and 979 transitions. [2023-12-02 14:47:57,193 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 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) [2023-12-02 14:47:57,193 INFO L276 IsEmpty]: Start isEmpty. Operand 912 states and 979 transitions. [2023-12-02 14:47:57,194 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2023-12-02 14:47:57,194 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 14:47:57,194 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-12-02 14:47:57,197 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a20cfce-99f6-4121-ba6d-6a0c58cac3fc/bin/utaipan-verify-nQ1chXbOIh/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 [2023-12-02 14:47:57,395 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a20cfce-99f6-4121-ba6d-6a0c58cac3fc/bin/utaipan-verify-nQ1chXbOIh/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 [2023-12-02 14:47:57,395 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 532 more)] === [2023-12-02 14:47:57,396 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 14:47:57,396 INFO L85 PathProgramCache]: Analyzing trace with hash -164213820, now seen corresponding path program 1 times [2023-12-02 14:47:57,396 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 14:47:57,396 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1823165899] [2023-12-02 14:47:57,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 14:47:57,396 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 [2023-12-02 14:47:57,397 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a20cfce-99f6-4121-ba6d-6a0c58cac3fc/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 14:47:57,397 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a20cfce-99f6-4121-ba6d-6a0c58cac3fc/bin/utaipan-verify-nQ1chXbOIh/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) [2023-12-02 14:47:57,398 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a20cfce-99f6-4121-ba6d-6a0c58cac3fc/bin/utaipan-verify-nQ1chXbOIh/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 [2023-12-02 14:47:57,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 14:47:57,483 INFO L262 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-02 14:47:57,485 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 14:47:57,493 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-12-02 14:47:57,526 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 14:47:57,526 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 14:47:57,527 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 14:47:57,527 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1823165899] [2023-12-02 14:47:57,527 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1823165899] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 14:47:57,527 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 14:47:57,528 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-02 14:47:57,528 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1128599714] [2023-12-02 14:47:57,528 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 14:47:57,529 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 14:47:57,529 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 14:47:57,529 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 14:47:57,530 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 14:47:57,530 INFO L87 Difference]: Start difference. First operand 912 states and 979 transitions. Second operand has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 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) [2023-12-02 14:48:00,968 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 14:48:00,968 INFO L93 Difference]: Finished difference Result 1170 states and 1272 transitions. [2023-12-02 14:48:00,970 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 14:48:00,970 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 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 7 [2023-12-02 14:48:00,970 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 14:48:00,976 INFO L225 Difference]: With dead ends: 1170 [2023-12-02 14:48:00,976 INFO L226 Difference]: Without dead ends: 1170 [2023-12-02 14:48:00,976 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 14:48:00,977 INFO L413 NwaCegarLoop]: 900 mSDtfsCounter, 450 mSDsluCounter, 366 mSDsCounter, 0 mSdLazyCounter, 726 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 455 SdHoareTripleChecker+Valid, 1266 SdHoareTripleChecker+Invalid, 738 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 726 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2023-12-02 14:48:00,978 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [455 Valid, 1266 Invalid, 738 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 726 Invalid, 0 Unknown, 0 Unchecked, 3.4s Time] [2023-12-02 14:48:00,980 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1170 states. [2023-12-02 14:48:00,995 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1170 to 925. [2023-12-02 14:48:00,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 925 states, 464 states have (on average 2.1724137931034484) internal successors, (1008), 918 states have internal predecessors, (1008), 10 states have call successors, (10), 3 states have call predecessors, (10), 2 states have return successors, (8), 4 states have call predecessors, (8), 8 states have call successors, (8) [2023-12-02 14:48:01,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 925 states to 925 states and 1026 transitions. [2023-12-02 14:48:01,000 INFO L78 Accepts]: Start accepts. Automaton has 925 states and 1026 transitions. Word has length 7 [2023-12-02 14:48:01,001 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 14:48:01,001 INFO L495 AbstractCegarLoop]: Abstraction has 925 states and 1026 transitions. [2023-12-02 14:48:01,001 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 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) [2023-12-02 14:48:01,001 INFO L276 IsEmpty]: Start isEmpty. Operand 925 states and 1026 transitions. [2023-12-02 14:48:01,002 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2023-12-02 14:48:01,002 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 14:48:01,002 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 14:48:01,004 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a20cfce-99f6-4121-ba6d-6a0c58cac3fc/bin/utaipan-verify-nQ1chXbOIh/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 [2023-12-02 14:48:01,203 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a20cfce-99f6-4121-ba6d-6a0c58cac3fc/bin/utaipan-verify-nQ1chXbOIh/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 [2023-12-02 14:48:01,204 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr428REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 532 more)] === [2023-12-02 14:48:01,204 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 14:48:01,204 INFO L85 PathProgramCache]: Analyzing trace with hash -864044681, now seen corresponding path program 1 times [2023-12-02 14:48:01,205 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 14:48:01,205 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [35529005] [2023-12-02 14:48:01,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 14:48:01,205 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 [2023-12-02 14:48:01,205 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a20cfce-99f6-4121-ba6d-6a0c58cac3fc/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 14:48:01,206 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a20cfce-99f6-4121-ba6d-6a0c58cac3fc/bin/utaipan-verify-nQ1chXbOIh/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) [2023-12-02 14:48:01,207 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a20cfce-99f6-4121-ba6d-6a0c58cac3fc/bin/utaipan-verify-nQ1chXbOIh/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 [2023-12-02 14:48:01,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 14:48:01,345 INFO L262 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-02 14:48:01,347 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 14:48:01,410 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 14:48:01,410 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 14:48:01,410 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 14:48:01,411 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [35529005] [2023-12-02 14:48:01,411 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [35529005] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 14:48:01,411 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 14:48:01,411 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-02 14:48:01,411 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [771952844] [2023-12-02 14:48:01,411 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 14:48:01,412 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 14:48:01,412 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 14:48:01,412 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 14:48:01,412 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 14:48:01,413 INFO L87 Difference]: Start difference. First operand 925 states and 1026 transitions. Second operand has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 2 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) [2023-12-02 14:48:02,935 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 14:48:02,935 INFO L93 Difference]: Finished difference Result 1356 states and 1503 transitions. [2023-12-02 14:48:02,937 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 14:48:02,938 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 2 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2023-12-02 14:48:02,938 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 14:48:02,945 INFO L225 Difference]: With dead ends: 1356 [2023-12-02 14:48:02,945 INFO L226 Difference]: Without dead ends: 1356 [2023-12-02 14:48:02,945 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 14:48:02,946 INFO L413 NwaCegarLoop]: 902 mSDtfsCounter, 516 mSDsluCounter, 721 mSDsCounter, 0 mSdLazyCounter, 325 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 523 SdHoareTripleChecker+Valid, 1623 SdHoareTripleChecker+Invalid, 332 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 325 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2023-12-02 14:48:02,947 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [523 Valid, 1623 Invalid, 332 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 325 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2023-12-02 14:48:02,950 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1356 states. [2023-12-02 14:48:02,968 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1356 to 1079. [2023-12-02 14:48:02,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1079 states, 613 states have (on average 2.096247960848287) internal successors, (1285), 1072 states have internal predecessors, (1285), 15 states have call successors, (15), 3 states have call predecessors, (15), 2 states have return successors, (13), 5 states have call predecessors, (13), 13 states have call successors, (13) [2023-12-02 14:48:02,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1079 states to 1079 states and 1313 transitions. [2023-12-02 14:48:02,975 INFO L78 Accepts]: Start accepts. Automaton has 1079 states and 1313 transitions. Word has length 10 [2023-12-02 14:48:02,975 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 14:48:02,975 INFO L495 AbstractCegarLoop]: Abstraction has 1079 states and 1313 transitions. [2023-12-02 14:48:02,975 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 2 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) [2023-12-02 14:48:02,975 INFO L276 IsEmpty]: Start isEmpty. Operand 1079 states and 1313 transitions. [2023-12-02 14:48:02,976 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2023-12-02 14:48:02,976 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 14:48:02,976 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 14:48:02,978 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a20cfce-99f6-4121-ba6d-6a0c58cac3fc/bin/utaipan-verify-nQ1chXbOIh/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)] Ended with exit code 0 [2023-12-02 14:48:03,176 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a20cfce-99f6-4121-ba6d-6a0c58cac3fc/bin/utaipan-verify-nQ1chXbOIh/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 [2023-12-02 14:48:03,177 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr340REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 532 more)] === [2023-12-02 14:48:03,177 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 14:48:03,177 INFO L85 PathProgramCache]: Analyzing trace with hash -1791306123, now seen corresponding path program 1 times [2023-12-02 14:48:03,178 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 14:48:03,178 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1038078254] [2023-12-02 14:48:03,178 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 14:48:03,178 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 [2023-12-02 14:48:03,178 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a20cfce-99f6-4121-ba6d-6a0c58cac3fc/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 14:48:03,180 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a20cfce-99f6-4121-ba6d-6a0c58cac3fc/bin/utaipan-verify-nQ1chXbOIh/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) [2023-12-02 14:48:03,181 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a20cfce-99f6-4121-ba6d-6a0c58cac3fc/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2023-12-02 14:48:03,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 14:48:03,304 INFO L262 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-02 14:48:03,306 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 14:48:03,318 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 14:48:03,318 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 14:48:03,318 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 14:48:03,318 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1038078254] [2023-12-02 14:48:03,318 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1038078254] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 14:48:03,318 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 14:48:03,319 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-02 14:48:03,319 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [679923195] [2023-12-02 14:48:03,319 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 14:48:03,319 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 14:48:03,319 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 14:48:03,320 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 14:48:03,320 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 14:48:03,320 INFO L87 Difference]: Start difference. First operand 1079 states and 1313 transitions. Second operand has 3 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 14:48:04,217 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 14:48:04,218 INFO L93 Difference]: Finished difference Result 1025 states and 1233 transitions. [2023-12-02 14:48:04,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 14:48:04,220 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2023-12-02 14:48:04,220 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 14:48:04,225 INFO L225 Difference]: With dead ends: 1025 [2023-12-02 14:48:04,225 INFO L226 Difference]: Without dead ends: 1025 [2023-12-02 14:48:04,225 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 14:48:04,226 INFO L413 NwaCegarLoop]: 805 mSDtfsCounter, 70 mSDsluCounter, 756 mSDsCounter, 0 mSdLazyCounter, 210 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 70 SdHoareTripleChecker+Valid, 1561 SdHoareTripleChecker+Invalid, 210 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 210 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-12-02 14:48:04,226 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [70 Valid, 1561 Invalid, 210 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 210 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-12-02 14:48:04,229 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1025 states. [2023-12-02 14:48:04,243 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1025 to 1025. [2023-12-02 14:48:04,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1025 states, 583 states have (on average 2.0668953687821614) internal successors, (1205), 1018 states have internal predecessors, (1205), 15 states have call successors, (15), 3 states have call predecessors, (15), 2 states have return successors, (13), 5 states have call predecessors, (13), 13 states have call successors, (13) [2023-12-02 14:48:04,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1025 states to 1025 states and 1233 transitions. [2023-12-02 14:48:04,250 INFO L78 Accepts]: Start accepts. Automaton has 1025 states and 1233 transitions. Word has length 12 [2023-12-02 14:48:04,250 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 14:48:04,250 INFO L495 AbstractCegarLoop]: Abstraction has 1025 states and 1233 transitions. [2023-12-02 14:48:04,251 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-02 14:48:04,251 INFO L276 IsEmpty]: Start isEmpty. Operand 1025 states and 1233 transitions. [2023-12-02 14:48:04,251 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2023-12-02 14:48:04,252 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 14:48:04,252 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 14:48:04,256 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a20cfce-99f6-4121-ba6d-6a0c58cac3fc/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2023-12-02 14:48:04,455 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a20cfce-99f6-4121-ba6d-6a0c58cac3fc/bin/utaipan-verify-nQ1chXbOIh/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 [2023-12-02 14:48:04,456 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr533ASSERT_VIOLATIONMEMORY_LEAK === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 532 more)] === [2023-12-02 14:48:04,456 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 14:48:04,456 INFO L85 PathProgramCache]: Analyzing trace with hash -1008937855, now seen corresponding path program 1 times [2023-12-02 14:48:04,456 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 14:48:04,456 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [396063317] [2023-12-02 14:48:04,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 14:48:04,457 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 [2023-12-02 14:48:04,457 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a20cfce-99f6-4121-ba6d-6a0c58cac3fc/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 14:48:04,458 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a20cfce-99f6-4121-ba6d-6a0c58cac3fc/bin/utaipan-verify-nQ1chXbOIh/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) [2023-12-02 14:48:04,467 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a20cfce-99f6-4121-ba6d-6a0c58cac3fc/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2023-12-02 14:48:04,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 14:48:04,659 INFO L262 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-02 14:48:04,661 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 14:48:04,667 INFO L173 IndexEqualityManager]: detected equality via solver [2023-12-02 14:48:04,668 INFO L173 IndexEqualityManager]: detected equality via solver [2023-12-02 14:48:04,668 INFO L173 IndexEqualityManager]: detected equality via solver [2023-12-02 14:48:04,673 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 39 [2023-12-02 14:48:04,740 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-02 14:48:04,740 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 70 treesize of output 26 [2023-12-02 14:48:04,758 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 14:48:04,758 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 14:48:04,758 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 14:48:04,758 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [396063317] [2023-12-02 14:48:04,758 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [396063317] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 14:48:04,759 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 14:48:04,759 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-02 14:48:04,759 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [572471503] [2023-12-02 14:48:04,759 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 14:48:04,759 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-02 14:48:04,759 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 14:48:04,760 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-02 14:48:04,760 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-02 14:48:04,760 INFO L87 Difference]: Start difference. First operand 1025 states and 1233 transitions. Second operand has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 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) [2023-12-02 14:48:06,925 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 14:48:06,925 INFO L93 Difference]: Finished difference Result 1336 states and 1596 transitions. [2023-12-02 14:48:06,926 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-02 14:48:06,926 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 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 13 [2023-12-02 14:48:06,926 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 14:48:06,934 INFO L225 Difference]: With dead ends: 1336 [2023-12-02 14:48:06,934 INFO L226 Difference]: Without dead ends: 1336 [2023-12-02 14:48:06,934 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-02 14:48:06,935 INFO L413 NwaCegarLoop]: 809 mSDtfsCounter, 318 mSDsluCounter, 1566 mSDsCounter, 0 mSdLazyCounter, 394 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 323 SdHoareTripleChecker+Valid, 2375 SdHoareTripleChecker+Invalid, 395 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 394 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2023-12-02 14:48:06,935 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [323 Valid, 2375 Invalid, 395 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 394 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2023-12-02 14:48:06,937 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1336 states. [2023-12-02 14:48:06,954 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1336 to 1024. [2023-12-02 14:48:06,957 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1024 states, 582 states have (on average 2.0670103092783507) internal successors, (1203), 1017 states have internal predecessors, (1203), 15 states have call successors, (15), 3 states have call predecessors, (15), 2 states have return successors, (13), 5 states have call predecessors, (13), 13 states have call successors, (13) [2023-12-02 14:48:06,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1024 states to 1024 states and 1231 transitions. [2023-12-02 14:48:06,962 INFO L78 Accepts]: Start accepts. Automaton has 1024 states and 1231 transitions. Word has length 13 [2023-12-02 14:48:06,963 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 14:48:06,963 INFO L495 AbstractCegarLoop]: Abstraction has 1024 states and 1231 transitions. [2023-12-02 14:48:06,963 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 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) [2023-12-02 14:48:06,963 INFO L276 IsEmpty]: Start isEmpty. Operand 1024 states and 1231 transitions. [2023-12-02 14:48:06,964 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2023-12-02 14:48:06,964 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 14:48:06,964 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 14:48:06,969 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a20cfce-99f6-4121-ba6d-6a0c58cac3fc/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2023-12-02 14:48:07,164 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a20cfce-99f6-4121-ba6d-6a0c58cac3fc/bin/utaipan-verify-nQ1chXbOIh/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 [2023-12-02 14:48:07,165 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr15REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 532 more)] === [2023-12-02 14:48:07,165 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 14:48:07,166 INFO L85 PathProgramCache]: Analyzing trace with hash -1206139973, now seen corresponding path program 1 times [2023-12-02 14:48:07,166 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 14:48:07,166 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2110040624] [2023-12-02 14:48:07,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 14:48:07,167 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 [2023-12-02 14:48:07,167 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a20cfce-99f6-4121-ba6d-6a0c58cac3fc/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 14:48:07,168 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a20cfce-99f6-4121-ba6d-6a0c58cac3fc/bin/utaipan-verify-nQ1chXbOIh/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) [2023-12-02 14:48:07,169 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a20cfce-99f6-4121-ba6d-6a0c58cac3fc/bin/utaipan-verify-nQ1chXbOIh/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 [2023-12-02 14:48:07,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 14:48:07,334 INFO L262 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-02 14:48:07,336 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 14:48:07,351 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 14:48:07,352 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 14:48:07,352 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 14:48:07,352 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2110040624] [2023-12-02 14:48:07,352 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2110040624] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 14:48:07,352 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 14:48:07,352 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-02 14:48:07,353 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1418679399] [2023-12-02 14:48:07,353 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 14:48:07,353 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 14:48:07,353 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 14:48:07,354 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 14:48:07,354 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 14:48:07,354 INFO L87 Difference]: Start difference. First operand 1024 states and 1231 transitions. Second operand has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 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) [2023-12-02 14:48:08,295 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 14:48:08,295 INFO L93 Difference]: Finished difference Result 970 states and 1151 transitions. [2023-12-02 14:48:08,297 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 14:48:08,297 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 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 15 [2023-12-02 14:48:08,298 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 14:48:08,302 INFO L225 Difference]: With dead ends: 970 [2023-12-02 14:48:08,302 INFO L226 Difference]: Without dead ends: 970 [2023-12-02 14:48:08,302 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 14:48:08,303 INFO L413 NwaCegarLoop]: 768 mSDtfsCounter, 70 mSDsluCounter, 719 mSDsCounter, 0 mSdLazyCounter, 204 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 70 SdHoareTripleChecker+Valid, 1487 SdHoareTripleChecker+Invalid, 204 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 204 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-12-02 14:48:08,303 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [70 Valid, 1487 Invalid, 204 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 204 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-12-02 14:48:08,306 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 970 states. [2023-12-02 14:48:08,322 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 970 to 970. [2023-12-02 14:48:08,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 970 states, 552 states have (on average 2.0344202898550723) internal successors, (1123), 963 states have internal predecessors, (1123), 15 states have call successors, (15), 3 states have call predecessors, (15), 2 states have return successors, (13), 5 states have call predecessors, (13), 13 states have call successors, (13) [2023-12-02 14:48:08,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 970 states to 970 states and 1151 transitions. [2023-12-02 14:48:08,330 INFO L78 Accepts]: Start accepts. Automaton has 970 states and 1151 transitions. Word has length 15 [2023-12-02 14:48:08,330 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 14:48:08,330 INFO L495 AbstractCegarLoop]: Abstraction has 970 states and 1151 transitions. [2023-12-02 14:48:08,330 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 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) [2023-12-02 14:48:08,330 INFO L276 IsEmpty]: Start isEmpty. Operand 970 states and 1151 transitions. [2023-12-02 14:48:08,331 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2023-12-02 14:48:08,331 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 14:48:08,331 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 14:48:08,336 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a20cfce-99f6-4121-ba6d-6a0c58cac3fc/bin/utaipan-verify-nQ1chXbOIh/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 [2023-12-02 14:48:08,532 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a20cfce-99f6-4121-ba6d-6a0c58cac3fc/bin/utaipan-verify-nQ1chXbOIh/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 [2023-12-02 14:48:08,532 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr38REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 532 more)] === [2023-12-02 14:48:08,533 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 14:48:08,533 INFO L85 PathProgramCache]: Analyzing trace with hash 540651572, now seen corresponding path program 1 times [2023-12-02 14:48:08,533 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 14:48:08,534 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [179508439] [2023-12-02 14:48:08,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 14:48:08,534 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 [2023-12-02 14:48:08,534 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a20cfce-99f6-4121-ba6d-6a0c58cac3fc/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 14:48:08,535 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a20cfce-99f6-4121-ba6d-6a0c58cac3fc/bin/utaipan-verify-nQ1chXbOIh/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) [2023-12-02 14:48:08,537 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a20cfce-99f6-4121-ba6d-6a0c58cac3fc/bin/utaipan-verify-nQ1chXbOIh/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 [2023-12-02 14:48:08,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 14:48:08,761 INFO L262 TraceCheckSpWp]: Trace formula consists of 132 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-02 14:48:08,764 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 14:48:08,786 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 14:48:08,786 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 14:48:08,787 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 14:48:08,787 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [179508439] [2023-12-02 14:48:08,787 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [179508439] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 14:48:08,787 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 14:48:08,788 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-02 14:48:08,788 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1750054844] [2023-12-02 14:48:08,788 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 14:48:08,789 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-02 14:48:08,789 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 14:48:08,789 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-02 14:48:08,790 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-02 14:48:08,790 INFO L87 Difference]: Start difference. First operand 970 states and 1151 transitions. Second operand has 4 states, 4 states have (on average 4.25) internal successors, (17), 4 states have internal predecessors, (17), 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) [2023-12-02 14:48:10,095 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 14:48:10,095 INFO L93 Difference]: Finished difference Result 956 states and 1109 transitions. [2023-12-02 14:48:10,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-02 14:48:10,098 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.25) internal successors, (17), 4 states have internal predecessors, (17), 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 17 [2023-12-02 14:48:10,098 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 14:48:10,103 INFO L225 Difference]: With dead ends: 956 [2023-12-02 14:48:10,103 INFO L226 Difference]: Without dead ends: 956 [2023-12-02 14:48:10,104 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-02 14:48:10,104 INFO L413 NwaCegarLoop]: 737 mSDtfsCounter, 58 mSDsluCounter, 1450 mSDsCounter, 0 mSdLazyCounter, 311 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 58 SdHoareTripleChecker+Valid, 2187 SdHoareTripleChecker+Invalid, 333 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 311 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-12-02 14:48:10,104 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [58 Valid, 2187 Invalid, 333 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 311 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-12-02 14:48:10,107 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 956 states. [2023-12-02 14:48:10,118 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 956 to 954. [2023-12-02 14:48:10,120 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 954 states, 550 states have (on average 1.961818181818182) internal successors, (1079), 947 states have internal predecessors, (1079), 15 states have call successors, (15), 3 states have call predecessors, (15), 2 states have return successors, (13), 5 states have call predecessors, (13), 13 states have call successors, (13) [2023-12-02 14:48:10,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 954 states to 954 states and 1107 transitions. [2023-12-02 14:48:10,123 INFO L78 Accepts]: Start accepts. Automaton has 954 states and 1107 transitions. Word has length 17 [2023-12-02 14:48:10,123 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 14:48:10,124 INFO L495 AbstractCegarLoop]: Abstraction has 954 states and 1107 transitions. [2023-12-02 14:48:10,124 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.25) internal successors, (17), 4 states have internal predecessors, (17), 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) [2023-12-02 14:48:10,124 INFO L276 IsEmpty]: Start isEmpty. Operand 954 states and 1107 transitions. [2023-12-02 14:48:10,125 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2023-12-02 14:48:10,125 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 14:48:10,125 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 14:48:10,128 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a20cfce-99f6-4121-ba6d-6a0c58cac3fc/bin/utaipan-verify-nQ1chXbOIh/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)] Ended with exit code 0 [2023-12-02 14:48:10,325 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a20cfce-99f6-4121-ba6d-6a0c58cac3fc/bin/utaipan-verify-nQ1chXbOIh/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 [2023-12-02 14:48:10,326 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr52REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 532 more)] === [2023-12-02 14:48:10,326 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 14:48:10,326 INFO L85 PathProgramCache]: Analyzing trace with hash 1465329026, now seen corresponding path program 1 times [2023-12-02 14:48:10,327 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 14:48:10,327 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1356646816] [2023-12-02 14:48:10,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 14:48:10,327 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 [2023-12-02 14:48:10,327 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a20cfce-99f6-4121-ba6d-6a0c58cac3fc/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 14:48:10,328 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a20cfce-99f6-4121-ba6d-6a0c58cac3fc/bin/utaipan-verify-nQ1chXbOIh/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) [2023-12-02 14:48:10,329 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a20cfce-99f6-4121-ba6d-6a0c58cac3fc/bin/utaipan-verify-nQ1chXbOIh/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 (12)] Waiting until timeout for monitored process [2023-12-02 14:48:10,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 14:48:10,505 INFO L262 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-02 14:48:10,508 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 14:48:10,514 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2023-12-02 14:48:10,583 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 14:48:10,583 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 14:48:10,583 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 14:48:10,583 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1356646816] [2023-12-02 14:48:10,584 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1356646816] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 14:48:10,584 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 14:48:10,584 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-02 14:48:10,584 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [256270324] [2023-12-02 14:48:10,584 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 14:48:10,584 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-02 14:48:10,584 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 14:48:10,585 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-02 14:48:10,585 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-02 14:48:10,585 INFO L87 Difference]: Start difference. First operand 954 states and 1107 transitions. Second operand has 4 states, 3 states have (on average 10.333333333333334) internal successors, (31), 4 states have internal predecessors, (31), 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) [2023-12-02 14:48:13,271 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 14:48:13,271 INFO L93 Difference]: Finished difference Result 1178 states and 1407 transitions. [2023-12-02 14:48:13,272 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-02 14:48:13,272 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 10.333333333333334) internal successors, (31), 4 states have internal predecessors, (31), 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 31 [2023-12-02 14:48:13,273 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 14:48:13,280 INFO L225 Difference]: With dead ends: 1178 [2023-12-02 14:48:13,280 INFO L226 Difference]: Without dead ends: 1178 [2023-12-02 14:48:13,281 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-02 14:48:13,286 INFO L413 NwaCegarLoop]: 489 mSDtfsCounter, 625 mSDsluCounter, 568 mSDsCounter, 0 mSdLazyCounter, 1021 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 633 SdHoareTripleChecker+Valid, 1057 SdHoareTripleChecker+Invalid, 1029 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 1021 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2023-12-02 14:48:13,286 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [633 Valid, 1057 Invalid, 1029 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 1021 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2023-12-02 14:48:13,289 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1178 states. [2023-12-02 14:48:13,305 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1178 to 950. [2023-12-02 14:48:13,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 950 states, 550 states have (on average 1.9472727272727273) internal successors, (1071), 943 states have internal predecessors, (1071), 15 states have call successors, (15), 3 states have call predecessors, (15), 2 states have return successors, (13), 5 states have call predecessors, (13), 13 states have call successors, (13) [2023-12-02 14:48:13,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 950 states to 950 states and 1099 transitions. [2023-12-02 14:48:13,312 INFO L78 Accepts]: Start accepts. Automaton has 950 states and 1099 transitions. Word has length 31 [2023-12-02 14:48:13,313 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 14:48:13,313 INFO L495 AbstractCegarLoop]: Abstraction has 950 states and 1099 transitions. [2023-12-02 14:48:13,313 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 10.333333333333334) internal successors, (31), 4 states have internal predecessors, (31), 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) [2023-12-02 14:48:13,313 INFO L276 IsEmpty]: Start isEmpty. Operand 950 states and 1099 transitions. [2023-12-02 14:48:13,314 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2023-12-02 14:48:13,314 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 14:48:13,314 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 14:48:13,319 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a20cfce-99f6-4121-ba6d-6a0c58cac3fc/bin/utaipan-verify-nQ1chXbOIh/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 (12)] Ended with exit code 0 [2023-12-02 14:48:13,515 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a20cfce-99f6-4121-ba6d-6a0c58cac3fc/bin/utaipan-verify-nQ1chXbOIh/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 [2023-12-02 14:48:13,515 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr53REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 532 more)] === [2023-12-02 14:48:13,516 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 14:48:13,516 INFO L85 PathProgramCache]: Analyzing trace with hash 1465329027, now seen corresponding path program 1 times [2023-12-02 14:48:13,516 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 14:48:13,517 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2023181110] [2023-12-02 14:48:13,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 14:48:13,517 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 [2023-12-02 14:48:13,517 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a20cfce-99f6-4121-ba6d-6a0c58cac3fc/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 14:48:13,519 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a20cfce-99f6-4121-ba6d-6a0c58cac3fc/bin/utaipan-verify-nQ1chXbOIh/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) [2023-12-02 14:48:13,520 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a20cfce-99f6-4121-ba6d-6a0c58cac3fc/bin/utaipan-verify-nQ1chXbOIh/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 (13)] Waiting until timeout for monitored process [2023-12-02 14:48:13,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 14:48:13,760 INFO L262 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-02 14:48:13,763 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 14:48:13,770 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-12-02 14:48:14,001 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 14:48:14,001 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 14:48:14,002 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 14:48:14,002 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2023181110] [2023-12-02 14:48:14,002 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2023181110] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 14:48:14,002 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 14:48:14,002 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-02 14:48:14,002 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1134393004] [2023-12-02 14:48:14,002 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 14:48:14,003 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-02 14:48:14,003 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 14:48:14,003 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-02 14:48:14,004 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-02 14:48:14,004 INFO L87 Difference]: Start difference. First operand 950 states and 1099 transitions. Second operand has 4 states, 3 states have (on average 10.333333333333334) internal successors, (31), 4 states have internal predecessors, (31), 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) [2023-12-02 14:48:17,897 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 14:48:17,898 INFO L93 Difference]: Finished difference Result 1219 states and 1413 transitions. [2023-12-02 14:48:17,898 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-02 14:48:17,899 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 10.333333333333334) internal successors, (31), 4 states have internal predecessors, (31), 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 31 [2023-12-02 14:48:17,899 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 14:48:17,905 INFO L225 Difference]: With dead ends: 1219 [2023-12-02 14:48:17,906 INFO L226 Difference]: Without dead ends: 1219 [2023-12-02 14:48:17,906 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-02 14:48:17,906 INFO L413 NwaCegarLoop]: 875 mSDtfsCounter, 345 mSDsluCounter, 871 mSDsCounter, 0 mSdLazyCounter, 1196 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 350 SdHoareTripleChecker+Valid, 1746 SdHoareTripleChecker+Invalid, 1199 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 1196 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.8s IncrementalHoareTripleChecker+Time [2023-12-02 14:48:17,907 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [350 Valid, 1746 Invalid, 1199 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 1196 Invalid, 0 Unknown, 0 Unchecked, 3.8s Time] [2023-12-02 14:48:17,909 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1219 states. [2023-12-02 14:48:17,920 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1219 to 946. [2023-12-02 14:48:17,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 946 states, 550 states have (on average 1.9327272727272726) internal successors, (1063), 939 states have internal predecessors, (1063), 15 states have call successors, (15), 3 states have call predecessors, (15), 2 states have return successors, (13), 5 states have call predecessors, (13), 13 states have call successors, (13) [2023-12-02 14:48:17,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 946 states to 946 states and 1091 transitions. [2023-12-02 14:48:17,925 INFO L78 Accepts]: Start accepts. Automaton has 946 states and 1091 transitions. Word has length 31 [2023-12-02 14:48:17,925 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 14:48:17,926 INFO L495 AbstractCegarLoop]: Abstraction has 946 states and 1091 transitions. [2023-12-02 14:48:17,926 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 10.333333333333334) internal successors, (31), 4 states have internal predecessors, (31), 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) [2023-12-02 14:48:17,926 INFO L276 IsEmpty]: Start isEmpty. Operand 946 states and 1091 transitions. [2023-12-02 14:48:17,928 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2023-12-02 14:48:17,928 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 14:48:17,928 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 14:48:17,932 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a20cfce-99f6-4121-ba6d-6a0c58cac3fc/bin/utaipan-verify-nQ1chXbOIh/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 (13)] Ended with exit code 0 [2023-12-02 14:48:18,131 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a20cfce-99f6-4121-ba6d-6a0c58cac3fc/bin/utaipan-verify-nQ1chXbOIh/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 [2023-12-02 14:48:18,132 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr71REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 532 more)] === [2023-12-02 14:48:18,132 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 14:48:18,132 INFO L85 PathProgramCache]: Analyzing trace with hash -1206683468, now seen corresponding path program 1 times [2023-12-02 14:48:18,133 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 14:48:18,133 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [390665392] [2023-12-02 14:48:18,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 14:48:18,133 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 [2023-12-02 14:48:18,134 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a20cfce-99f6-4121-ba6d-6a0c58cac3fc/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 14:48:18,135 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a20cfce-99f6-4121-ba6d-6a0c58cac3fc/bin/utaipan-verify-nQ1chXbOIh/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) [2023-12-02 14:48:18,136 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a20cfce-99f6-4121-ba6d-6a0c58cac3fc/bin/utaipan-verify-nQ1chXbOIh/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 (14)] Waiting until timeout for monitored process [2023-12-02 14:48:18,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 14:48:18,425 INFO L262 TraceCheckSpWp]: Trace formula consists of 253 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-02 14:48:18,428 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 14:48:18,473 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 14:48:18,473 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 14:48:18,473 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 14:48:18,474 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [390665392] [2023-12-02 14:48:18,474 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [390665392] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 14:48:18,474 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 14:48:18,474 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-02 14:48:18,474 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1829624306] [2023-12-02 14:48:18,474 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 14:48:18,475 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-02 14:48:18,475 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 14:48:18,475 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-02 14:48:18,475 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-02 14:48:18,475 INFO L87 Difference]: Start difference. First operand 946 states and 1091 transitions. Second operand has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 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) [2023-12-02 14:48:19,623 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 14:48:19,623 INFO L93 Difference]: Finished difference Result 934 states and 1071 transitions. [2023-12-02 14:48:19,625 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-02 14:48:19,625 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 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 50 [2023-12-02 14:48:19,626 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 14:48:19,630 INFO L225 Difference]: With dead ends: 934 [2023-12-02 14:48:19,630 INFO L226 Difference]: Without dead ends: 934 [2023-12-02 14:48:19,630 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-02 14:48:19,631 INFO L413 NwaCegarLoop]: 731 mSDtfsCounter, 23 mSDsluCounter, 1442 mSDsCounter, 0 mSdLazyCounter, 307 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 2173 SdHoareTripleChecker+Invalid, 313 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 307 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-12-02 14:48:19,631 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 2173 Invalid, 313 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 307 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-12-02 14:48:19,633 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 934 states. [2023-12-02 14:48:19,644 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 934 to 934. [2023-12-02 14:48:19,646 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 934 states, 538 states have (on average 1.9386617100371748) internal successors, (1043), 927 states have internal predecessors, (1043), 15 states have call successors, (15), 3 states have call predecessors, (15), 2 states have return successors, (13), 5 states have call predecessors, (13), 13 states have call successors, (13) [2023-12-02 14:48:19,650 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 934 states to 934 states and 1071 transitions. [2023-12-02 14:48:19,650 INFO L78 Accepts]: Start accepts. Automaton has 934 states and 1071 transitions. Word has length 50 [2023-12-02 14:48:19,650 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 14:48:19,651 INFO L495 AbstractCegarLoop]: Abstraction has 934 states and 1071 transitions. [2023-12-02 14:48:19,651 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 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) [2023-12-02 14:48:19,651 INFO L276 IsEmpty]: Start isEmpty. Operand 934 states and 1071 transitions. [2023-12-02 14:48:19,653 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2023-12-02 14:48:19,653 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 14:48:19,653 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 14:48:19,660 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a20cfce-99f6-4121-ba6d-6a0c58cac3fc/bin/utaipan-verify-nQ1chXbOIh/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 (14)] Ended with exit code 0 [2023-12-02 14:48:19,860 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a20cfce-99f6-4121-ba6d-6a0c58cac3fc/bin/utaipan-verify-nQ1chXbOIh/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 [2023-12-02 14:48:19,860 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr71REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 532 more)] === [2023-12-02 14:48:19,860 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 14:48:19,860 INFO L85 PathProgramCache]: Analyzing trace with hash 17560563, now seen corresponding path program 1 times [2023-12-02 14:48:19,861 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 14:48:19,861 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [14685239] [2023-12-02 14:48:19,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 14:48:19,861 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 [2023-12-02 14:48:19,862 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a20cfce-99f6-4121-ba6d-6a0c58cac3fc/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 14:48:19,862 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a20cfce-99f6-4121-ba6d-6a0c58cac3fc/bin/utaipan-verify-nQ1chXbOIh/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) [2023-12-02 14:48:19,863 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a20cfce-99f6-4121-ba6d-6a0c58cac3fc/bin/utaipan-verify-nQ1chXbOIh/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 (15)] Waiting until timeout for monitored process [2023-12-02 14:48:20,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 14:48:20,219 INFO L262 TraceCheckSpWp]: Trace formula consists of 273 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-02 14:48:20,222 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 14:48:20,230 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-12-02 14:48:20,239 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2023-12-02 14:48:20,799 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-02 14:48:20,800 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 0 case distinctions, treesize of input 14 treesize of output 9 [2023-12-02 14:48:20,814 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2023-12-02 14:48:20,815 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2023-12-02 14:48:20,829 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 14:48:20,829 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 14:48:20,830 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 14:48:20,830 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [14685239] [2023-12-02 14:48:20,830 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [14685239] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 14:48:20,830 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 14:48:20,830 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-02 14:48:20,830 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [683483444] [2023-12-02 14:48:20,831 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 14:48:20,831 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-02 14:48:20,831 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 14:48:20,832 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-02 14:48:20,832 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-02 14:48:20,832 INFO L87 Difference]: Start difference. First operand 934 states and 1071 transitions. Second operand has 4 states, 3 states have (on average 18.0) internal successors, (54), 4 states have internal predecessors, (54), 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) [2023-12-02 14:48:23,996 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 14:48:23,997 INFO L93 Difference]: Finished difference Result 1124 states and 1341 transitions. [2023-12-02 14:48:23,997 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-02 14:48:23,997 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 18.0) internal successors, (54), 4 states have internal predecessors, (54), 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 54 [2023-12-02 14:48:23,998 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 14:48:24,003 INFO L225 Difference]: With dead ends: 1124 [2023-12-02 14:48:24,003 INFO L226 Difference]: Without dead ends: 1124 [2023-12-02 14:48:24,004 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 51 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-12-02 14:48:24,004 INFO L413 NwaCegarLoop]: 366 mSDtfsCounter, 711 mSDsluCounter, 232 mSDsCounter, 0 mSdLazyCounter, 840 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 724 SdHoareTripleChecker+Valid, 598 SdHoareTripleChecker+Invalid, 882 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 840 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2023-12-02 14:48:24,005 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [724 Valid, 598 Invalid, 882 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 840 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2023-12-02 14:48:24,006 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1124 states. [2023-12-02 14:48:24,024 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1124 to 873. [2023-12-02 14:48:24,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 873 states, 515 states have (on average 1.840776699029126) internal successors, (948), 866 states have internal predecessors, (948), 15 states have call successors, (15), 3 states have call predecessors, (15), 2 states have return successors, (13), 5 states have call predecessors, (13), 13 states have call successors, (13) [2023-12-02 14:48:24,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 873 states to 873 states and 976 transitions. [2023-12-02 14:48:24,028 INFO L78 Accepts]: Start accepts. Automaton has 873 states and 976 transitions. Word has length 54 [2023-12-02 14:48:24,028 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 14:48:24,028 INFO L495 AbstractCegarLoop]: Abstraction has 873 states and 976 transitions. [2023-12-02 14:48:24,028 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 18.0) internal successors, (54), 4 states have internal predecessors, (54), 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) [2023-12-02 14:48:24,028 INFO L276 IsEmpty]: Start isEmpty. Operand 873 states and 976 transitions. [2023-12-02 14:48:24,029 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2023-12-02 14:48:24,030 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 14:48:24,030 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 14:48:24,037 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a20cfce-99f6-4121-ba6d-6a0c58cac3fc/bin/utaipan-verify-nQ1chXbOIh/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 (15)] Ended with exit code 0 [2023-12-02 14:48:24,235 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a20cfce-99f6-4121-ba6d-6a0c58cac3fc/bin/utaipan-verify-nQ1chXbOIh/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 [2023-12-02 14:48:24,236 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr76REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 532 more)] === [2023-12-02 14:48:24,236 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 14:48:24,236 INFO L85 PathProgramCache]: Analyzing trace with hash 1111037619, now seen corresponding path program 1 times [2023-12-02 14:48:24,237 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 14:48:24,237 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1385681097] [2023-12-02 14:48:24,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 14:48:24,237 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 [2023-12-02 14:48:24,237 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a20cfce-99f6-4121-ba6d-6a0c58cac3fc/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 14:48:24,238 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a20cfce-99f6-4121-ba6d-6a0c58cac3fc/bin/utaipan-verify-nQ1chXbOIh/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) [2023-12-02 14:48:24,239 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a20cfce-99f6-4121-ba6d-6a0c58cac3fc/bin/utaipan-verify-nQ1chXbOIh/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 (16)] Waiting until timeout for monitored process [2023-12-02 14:48:24,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 14:48:24,503 INFO L262 TraceCheckSpWp]: Trace formula consists of 299 conjuncts, 6 conjunts are in the unsatisfiable core [2023-12-02 14:48:24,506 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 14:48:24,515 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2023-12-02 14:48:24,531 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2023-12-02 14:48:24,556 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 23 treesize of output 11 [2023-12-02 14:48:24,568 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 14:48:24,568 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 14:48:24,568 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 14:48:24,568 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1385681097] [2023-12-02 14:48:24,568 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1385681097] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 14:48:24,568 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 14:48:24,569 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-02 14:48:24,569 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [91783634] [2023-12-02 14:48:24,569 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 14:48:24,569 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-02 14:48:24,569 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 14:48:24,570 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-02 14:48:24,570 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-02 14:48:24,570 INFO L87 Difference]: Start difference. First operand 873 states and 976 transitions. Second operand has 5 states, 4 states have (on average 14.5) internal successors, (58), 5 states have internal predecessors, (58), 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) [2023-12-02 14:48:27,615 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 14:48:27,615 INFO L93 Difference]: Finished difference Result 872 states and 975 transitions. [2023-12-02 14:48:27,616 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-02 14:48:27,616 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 14.5) internal successors, (58), 5 states have internal predecessors, (58), 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 58 [2023-12-02 14:48:27,616 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 14:48:27,620 INFO L225 Difference]: With dead ends: 872 [2023-12-02 14:48:27,620 INFO L226 Difference]: Without dead ends: 872 [2023-12-02 14:48:27,620 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-12-02 14:48:27,621 INFO L413 NwaCegarLoop]: 705 mSDtfsCounter, 3 mSDsluCounter, 1162 mSDsCounter, 0 mSdLazyCounter, 1332 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 1867 SdHoareTripleChecker+Invalid, 1333 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1332 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2023-12-02 14:48:27,621 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 1867 Invalid, 1333 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1332 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2023-12-02 14:48:27,623 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 872 states. [2023-12-02 14:48:27,631 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 872 to 872. [2023-12-02 14:48:27,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 872 states, 515 states have (on average 1.8388349514563107) internal successors, (947), 865 states have internal predecessors, (947), 15 states have call successors, (15), 3 states have call predecessors, (15), 2 states have return successors, (13), 5 states have call predecessors, (13), 13 states have call successors, (13) [2023-12-02 14:48:27,634 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 872 states to 872 states and 975 transitions. [2023-12-02 14:48:27,635 INFO L78 Accepts]: Start accepts. Automaton has 872 states and 975 transitions. Word has length 58 [2023-12-02 14:48:27,635 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 14:48:27,635 INFO L495 AbstractCegarLoop]: Abstraction has 872 states and 975 transitions. [2023-12-02 14:48:27,635 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 14.5) internal successors, (58), 5 states have internal predecessors, (58), 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) [2023-12-02 14:48:27,635 INFO L276 IsEmpty]: Start isEmpty. Operand 872 states and 975 transitions. [2023-12-02 14:48:27,636 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2023-12-02 14:48:27,636 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 14:48:27,636 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 14:48:27,642 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a20cfce-99f6-4121-ba6d-6a0c58cac3fc/bin/utaipan-verify-nQ1chXbOIh/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 (16)] Ended with exit code 0 [2023-12-02 14:48:27,836 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a20cfce-99f6-4121-ba6d-6a0c58cac3fc/bin/utaipan-verify-nQ1chXbOIh/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 [2023-12-02 14:48:27,837 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr77REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 532 more)] === [2023-12-02 14:48:27,837 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 14:48:27,837 INFO L85 PathProgramCache]: Analyzing trace with hash 1111037620, now seen corresponding path program 1 times [2023-12-02 14:48:27,838 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 14:48:27,838 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [941219451] [2023-12-02 14:48:27,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 14:48:27,838 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 [2023-12-02 14:48:27,839 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a20cfce-99f6-4121-ba6d-6a0c58cac3fc/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 14:48:27,840 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a20cfce-99f6-4121-ba6d-6a0c58cac3fc/bin/utaipan-verify-nQ1chXbOIh/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) [2023-12-02 14:48:27,841 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a20cfce-99f6-4121-ba6d-6a0c58cac3fc/bin/utaipan-verify-nQ1chXbOIh/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 (17)] Waiting until timeout for monitored process [2023-12-02 14:48:28,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 14:48:28,125 INFO L262 TraceCheckSpWp]: Trace formula consists of 299 conjuncts, 11 conjunts are in the unsatisfiable core [2023-12-02 14:48:28,129 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 14:48:28,139 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-12-02 14:48:28,164 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2023-12-02 14:48:28,179 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2023-12-02 14:48:28,227 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 21 treesize of output 9 [2023-12-02 14:48:28,251 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 14:48:28,252 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 14:48:28,252 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 14:48:28,252 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [941219451] [2023-12-02 14:48:28,252 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [941219451] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 14:48:28,252 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 14:48:28,252 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-02 14:48:28,253 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1533253076] [2023-12-02 14:48:28,253 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 14:48:28,253 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-02 14:48:28,253 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 14:48:28,254 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-02 14:48:28,254 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-02 14:48:28,254 INFO L87 Difference]: Start difference. First operand 872 states and 975 transitions. Second operand has 5 states, 4 states have (on average 14.5) internal successors, (58), 5 states have internal predecessors, (58), 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) [2023-12-02 14:48:32,214 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 14:48:32,214 INFO L93 Difference]: Finished difference Result 871 states and 974 transitions. [2023-12-02 14:48:32,216 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-02 14:48:32,217 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 14.5) internal successors, (58), 5 states have internal predecessors, (58), 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 58 [2023-12-02 14:48:32,217 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 14:48:32,221 INFO L225 Difference]: With dead ends: 871 [2023-12-02 14:48:32,221 INFO L226 Difference]: Without dead ends: 871 [2023-12-02 14:48:32,221 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-12-02 14:48:32,222 INFO L413 NwaCegarLoop]: 705 mSDtfsCounter, 1 mSDsluCounter, 1196 mSDsCounter, 0 mSdLazyCounter, 1296 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 1901 SdHoareTripleChecker+Invalid, 1297 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1296 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.9s IncrementalHoareTripleChecker+Time [2023-12-02 14:48:32,222 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 1901 Invalid, 1297 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1296 Invalid, 0 Unknown, 0 Unchecked, 3.9s Time] [2023-12-02 14:48:32,223 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 871 states. [2023-12-02 14:48:32,231 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 871 to 871. [2023-12-02 14:48:32,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 871 states, 514 states have (on average 1.8404669260700388) internal successors, (946), 864 states have internal predecessors, (946), 15 states have call successors, (15), 3 states have call predecessors, (15), 2 states have return successors, (13), 5 states have call predecessors, (13), 13 states have call successors, (13) [2023-12-02 14:48:32,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 871 states to 871 states and 974 transitions. [2023-12-02 14:48:32,234 INFO L78 Accepts]: Start accepts. Automaton has 871 states and 974 transitions. Word has length 58 [2023-12-02 14:48:32,234 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 14:48:32,235 INFO L495 AbstractCegarLoop]: Abstraction has 871 states and 974 transitions. [2023-12-02 14:48:32,235 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 14.5) internal successors, (58), 5 states have internal predecessors, (58), 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) [2023-12-02 14:48:32,235 INFO L276 IsEmpty]: Start isEmpty. Operand 871 states and 974 transitions. [2023-12-02 14:48:32,235 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2023-12-02 14:48:32,235 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 14:48:32,236 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 14:48:32,241 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a20cfce-99f6-4121-ba6d-6a0c58cac3fc/bin/utaipan-verify-nQ1chXbOIh/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 (17)] Ended with exit code 0 [2023-12-02 14:48:32,436 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a20cfce-99f6-4121-ba6d-6a0c58cac3fc/bin/utaipan-verify-nQ1chXbOIh/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 [2023-12-02 14:48:32,436 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr80REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 532 more)] === [2023-12-02 14:48:32,437 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 14:48:32,437 INFO L85 PathProgramCache]: Analyzing trace with hash -1442804455, now seen corresponding path program 1 times [2023-12-02 14:48:32,437 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 14:48:32,437 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1695149064] [2023-12-02 14:48:32,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 14:48:32,438 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 [2023-12-02 14:48:32,438 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a20cfce-99f6-4121-ba6d-6a0c58cac3fc/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 14:48:32,439 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a20cfce-99f6-4121-ba6d-6a0c58cac3fc/bin/utaipan-verify-nQ1chXbOIh/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) [2023-12-02 14:48:32,440 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a20cfce-99f6-4121-ba6d-6a0c58cac3fc/bin/utaipan-verify-nQ1chXbOIh/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 (18)] Waiting until timeout for monitored process [2023-12-02 14:48:32,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 14:48:32,754 INFO L262 TraceCheckSpWp]: Trace formula consists of 326 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-02 14:48:32,757 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 14:48:32,778 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 14:48:32,778 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 14:48:32,779 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 14:48:32,779 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1695149064] [2023-12-02 14:48:32,779 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1695149064] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 14:48:32,779 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 14:48:32,779 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-02 14:48:32,779 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1128114345] [2023-12-02 14:48:32,780 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 14:48:32,780 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-02 14:48:32,780 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 14:48:32,781 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-02 14:48:32,781 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-02 14:48:32,782 INFO L87 Difference]: Start difference. First operand 871 states and 974 transitions. Second operand has 4 states, 3 states have (on average 20.666666666666668) internal successors, (62), 4 states have internal predecessors, (62), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-12-02 14:48:33,899 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 14:48:33,899 INFO L93 Difference]: Finished difference Result 873 states and 977 transitions. [2023-12-02 14:48:33,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-02 14:48:33,901 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 20.666666666666668) internal successors, (62), 4 states have internal predecessors, (62), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 64 [2023-12-02 14:48:33,901 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 14:48:33,905 INFO L225 Difference]: With dead ends: 873 [2023-12-02 14:48:33,905 INFO L226 Difference]: Without dead ends: 873 [2023-12-02 14:48:33,905 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 61 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-02 14:48:33,905 INFO L413 NwaCegarLoop]: 705 mSDtfsCounter, 1 mSDsluCounter, 1407 mSDsCounter, 0 mSdLazyCounter, 290 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 2112 SdHoareTripleChecker+Invalid, 291 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 290 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-12-02 14:48:33,906 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 2112 Invalid, 291 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 290 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-12-02 14:48:33,908 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 873 states. [2023-12-02 14:48:33,920 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 873 to 873. [2023-12-02 14:48:33,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 873 states, 515 states have (on average 1.840776699029126) internal successors, (948), 866 states have internal predecessors, (948), 15 states have call successors, (15), 3 states have call predecessors, (15), 3 states have return successors, (14), 5 states have call predecessors, (14), 13 states have call successors, (14) [2023-12-02 14:48:33,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 873 states to 873 states and 977 transitions. [2023-12-02 14:48:33,924 INFO L78 Accepts]: Start accepts. Automaton has 873 states and 977 transitions. Word has length 64 [2023-12-02 14:48:33,924 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 14:48:33,924 INFO L495 AbstractCegarLoop]: Abstraction has 873 states and 977 transitions. [2023-12-02 14:48:33,924 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 20.666666666666668) internal successors, (62), 4 states have internal predecessors, (62), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-12-02 14:48:33,925 INFO L276 IsEmpty]: Start isEmpty. Operand 873 states and 977 transitions. [2023-12-02 14:48:33,925 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2023-12-02 14:48:33,925 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 14:48:33,925 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 14:48:33,931 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a20cfce-99f6-4121-ba6d-6a0c58cac3fc/bin/utaipan-verify-nQ1chXbOIh/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 (18)] Ended with exit code 0 [2023-12-02 14:48:34,126 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a20cfce-99f6-4121-ba6d-6a0c58cac3fc/bin/utaipan-verify-nQ1chXbOIh/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 [2023-12-02 14:48:34,126 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr80REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 532 more)] === [2023-12-02 14:48:34,127 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 14:48:34,127 INFO L85 PathProgramCache]: Analyzing trace with hash 208260371, now seen corresponding path program 1 times [2023-12-02 14:48:34,128 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 14:48:34,128 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1111455764] [2023-12-02 14:48:34,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 14:48:34,128 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 [2023-12-02 14:48:34,128 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a20cfce-99f6-4121-ba6d-6a0c58cac3fc/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 14:48:34,129 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a20cfce-99f6-4121-ba6d-6a0c58cac3fc/bin/utaipan-verify-nQ1chXbOIh/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) [2023-12-02 14:48:34,130 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a20cfce-99f6-4121-ba6d-6a0c58cac3fc/bin/utaipan-verify-nQ1chXbOIh/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 (19)] Waiting until timeout for monitored process [2023-12-02 14:48:34,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 14:48:34,448 INFO L262 TraceCheckSpWp]: Trace formula consists of 337 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-02 14:48:34,450 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 14:48:34,475 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 14:48:34,475 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 14:48:34,555 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 14:48:34,556 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 14:48:34,556 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1111455764] [2023-12-02 14:48:34,556 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1111455764] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 14:48:34,556 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1819393836] [2023-12-02 14:48:34,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 14:48:34,557 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-02 14:48:34,557 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a20cfce-99f6-4121-ba6d-6a0c58cac3fc/bin/utaipan-verify-nQ1chXbOIh/cvc4 [2023-12-02 14:48:34,558 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a20cfce-99f6-4121-ba6d-6a0c58cac3fc/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-02 14:48:34,560 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a20cfce-99f6-4121-ba6d-6a0c58cac3fc/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (20)] Waiting until timeout for monitored process [2023-12-02 14:48:35,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 14:48:35,098 INFO L262 TraceCheckSpWp]: Trace formula consists of 337 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-02 14:48:35,100 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 14:48:35,121 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 14:48:35,122 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 14:48:35,159 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 14:48:35,160 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1819393836] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 14:48:35,160 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1589824051] [2023-12-02 14:48:35,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 14:48:35,160 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 14:48:35,160 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a20cfce-99f6-4121-ba6d-6a0c58cac3fc/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 14:48:35,162 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a20cfce-99f6-4121-ba6d-6a0c58cac3fc/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 14:48:35,167 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a20cfce-99f6-4121-ba6d-6a0c58cac3fc/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2023-12-02 14:48:35,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 14:48:35,551 INFO L262 TraceCheckSpWp]: Trace formula consists of 337 conjuncts, 4 conjunts are in the unsatisfiable core [2023-12-02 14:48:35,553 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 14:48:35,564 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 14:48:35,564 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 14:48:35,598 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 14:48:35,598 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1589824051] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 14:48:35,598 INFO L185 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2023-12-02 14:48:35,598 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5, 5, 5, 5] total 8 [2023-12-02 14:48:35,599 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [897554594] [2023-12-02 14:48:35,599 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2023-12-02 14:48:35,600 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-02 14:48:35,600 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 14:48:35,601 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-02 14:48:35,601 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-12-02 14:48:35,601 INFO L87 Difference]: Start difference. First operand 873 states and 977 transitions. Second operand has 8 states, 6 states have (on average 11.0) internal successors, (66), 8 states have internal predecessors, (66), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-12-02 14:48:37,191 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 14:48:37,191 INFO L93 Difference]: Finished difference Result 882 states and 991 transitions. [2023-12-02 14:48:37,192 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-12-02 14:48:37,192 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 6 states have (on average 11.0) internal successors, (66), 8 states have internal predecessors, (66), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 65 [2023-12-02 14:48:37,192 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 14:48:37,197 INFO L225 Difference]: With dead ends: 882 [2023-12-02 14:48:37,197 INFO L226 Difference]: Without dead ends: 882 [2023-12-02 14:48:37,197 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 389 GetRequests, 378 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=62, Invalid=94, Unknown=0, NotChecked=0, Total=156 [2023-12-02 14:48:37,198 INFO L413 NwaCegarLoop]: 704 mSDtfsCounter, 7 mSDsluCounter, 2107 mSDsCounter, 0 mSdLazyCounter, 422 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 2811 SdHoareTripleChecker+Invalid, 431 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 422 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2023-12-02 14:48:37,198 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 2811 Invalid, 431 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 422 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2023-12-02 14:48:37,200 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 882 states. [2023-12-02 14:48:37,216 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 882 to 881. [2023-12-02 14:48:37,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 881 states, 522 states have (on average 1.8409961685823755) internal successors, (961), 873 states have internal predecessors, (961), 15 states have call successors, (15), 4 states have call predecessors, (15), 4 states have return successors, (14), 5 states have call predecessors, (14), 13 states have call successors, (14) [2023-12-02 14:48:37,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 881 states to 881 states and 990 transitions. [2023-12-02 14:48:37,220 INFO L78 Accepts]: Start accepts. Automaton has 881 states and 990 transitions. Word has length 65 [2023-12-02 14:48:37,221 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 14:48:37,221 INFO L495 AbstractCegarLoop]: Abstraction has 881 states and 990 transitions. [2023-12-02 14:48:37,221 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 6 states have (on average 11.0) internal successors, (66), 8 states have internal predecessors, (66), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-12-02 14:48:37,221 INFO L276 IsEmpty]: Start isEmpty. Operand 881 states and 990 transitions. [2023-12-02 14:48:37,222 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2023-12-02 14:48:37,222 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 14:48:37,222 INFO L195 NwaCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 14:48:37,228 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a20cfce-99f6-4121-ba6d-6a0c58cac3fc/bin/utaipan-verify-nQ1chXbOIh/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 (19)] Forceful destruction successful, exit code 0 [2023-12-02 14:48:37,434 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a20cfce-99f6-4121-ba6d-6a0c58cac3fc/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2023-12-02 14:48:37,627 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a20cfce-99f6-4121-ba6d-6a0c58cac3fc/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (20)] Ended with exit code 0 [2023-12-02 14:48:37,823 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a20cfce-99f6-4121-ba6d-6a0c58cac3fc/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a20cfce-99f6-4121-ba6d-6a0c58cac3fc/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a20cfce-99f6-4121-ba6d-6a0c58cac3fc/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt [2023-12-02 14:48:37,824 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr80REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 532 more)] === [2023-12-02 14:48:37,824 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 14:48:37,824 INFO L85 PathProgramCache]: Analyzing trace with hash -1706181735, now seen corresponding path program 2 times [2023-12-02 14:48:37,825 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 14:48:37,825 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1497576497] [2023-12-02 14:48:37,826 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-02 14:48:37,826 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 [2023-12-02 14:48:37,826 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a20cfce-99f6-4121-ba6d-6a0c58cac3fc/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 14:48:37,828 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a20cfce-99f6-4121-ba6d-6a0c58cac3fc/bin/utaipan-verify-nQ1chXbOIh/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) [2023-12-02 14:48:37,829 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a20cfce-99f6-4121-ba6d-6a0c58cac3fc/bin/utaipan-verify-nQ1chXbOIh/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 (22)] Waiting until timeout for monitored process [2023-12-02 14:48:38,337 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-02 14:48:38,337 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-02 14:48:38,354 INFO L262 TraceCheckSpWp]: Trace formula consists of 370 conjuncts, 7 conjunts are in the unsatisfiable core [2023-12-02 14:48:38,357 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 14:48:38,418 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 14:48:38,418 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 14:48:38,596 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 14:48:38,597 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 14:48:38,597 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1497576497] [2023-12-02 14:48:38,597 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1497576497] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 14:48:38,597 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1924185353] [2023-12-02 14:48:38,597 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-02 14:48:38,597 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-02 14:48:38,597 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a20cfce-99f6-4121-ba6d-6a0c58cac3fc/bin/utaipan-verify-nQ1chXbOIh/cvc4 [2023-12-02 14:48:38,598 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a20cfce-99f6-4121-ba6d-6a0c58cac3fc/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-02 14:48:38,599 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a20cfce-99f6-4121-ba6d-6a0c58cac3fc/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (23)] Waiting until timeout for monitored process [2023-12-02 14:48:40,325 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-02 14:48:40,326 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-02 14:48:40,355 INFO L262 TraceCheckSpWp]: Trace formula consists of 370 conjuncts, 7 conjunts are in the unsatisfiable core [2023-12-02 14:48:40,357 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 14:48:40,376 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 14:48:40,377 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 14:48:40,432 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 14:48:40,433 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1924185353] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 14:48:40,433 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [447334939] [2023-12-02 14:48:40,433 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-02 14:48:40,433 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 14:48:40,433 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a20cfce-99f6-4121-ba6d-6a0c58cac3fc/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 14:48:40,434 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a20cfce-99f6-4121-ba6d-6a0c58cac3fc/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 14:48:40,435 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a20cfce-99f6-4121-ba6d-6a0c58cac3fc/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2023-12-02 14:48:54,951 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-02 14:48:54,951 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-02 14:48:54,971 INFO L262 TraceCheckSpWp]: Trace formula consists of 370 conjuncts, 15 conjunts are in the unsatisfiable core [2023-12-02 14:48:54,975 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 14:48:55,120 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2023-12-02 14:48:55,121 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2023-12-02 14:48:55,155 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 19 treesize of output 1 [2023-12-02 14:48:55,486 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2023-12-02 14:48:55,486 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 44 treesize of output 43 [2023-12-02 14:48:55,572 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 33 treesize of output 15 [2023-12-02 14:48:55,613 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-12-02 14:48:55,614 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 14:48:55,758 INFO L349 Elim1Store]: treesize reduction 7, result has 63.2 percent of original size [2023-12-02 14:48:55,759 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 24 [2023-12-02 14:48:55,891 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [447334939] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 14:48:55,892 INFO L185 FreeRefinementEngine]: Found 0 perfect and 5 imperfect interpolant sequences. [2023-12-02 14:48:55,892 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8, 8, 10] total 23 [2023-12-02 14:48:55,892 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1969014518] [2023-12-02 14:48:55,892 INFO L85 oduleStraightlineAll]: Using 5 imperfect interpolants to construct interpolant automaton [2023-12-02 14:48:55,893 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2023-12-02 14:48:55,893 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 14:48:55,894 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2023-12-02 14:48:55,895 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=89, Invalid=503, Unknown=8, NotChecked=0, Total=600 [2023-12-02 14:48:55,895 INFO L87 Difference]: Start difference. First operand 881 states and 990 transitions. Second operand has 23 states, 20 states have (on average 6.5) internal successors, (130), 22 states have internal predecessors, (130), 2 states have call successors, (2), 2 states have call predecessors, (2), 3 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-12-02 14:49:07,284 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 14:49:07,285 INFO L93 Difference]: Finished difference Result 1123 states and 1319 transitions. [2023-12-02 14:49:07,286 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2023-12-02 14:49:07,286 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 20 states have (on average 6.5) internal successors, (130), 22 states have internal predecessors, (130), 2 states have call successors, (2), 2 states have call predecessors, (2), 3 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 68 [2023-12-02 14:49:07,286 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 14:49:07,291 INFO L225 Difference]: With dead ends: 1123 [2023-12-02 14:49:07,292 INFO L226 Difference]: Without dead ends: 1121 [2023-12-02 14:49:07,293 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 367 GetRequests, 316 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 542 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=452, Invalid=2293, Unknown=11, NotChecked=0, Total=2756 [2023-12-02 14:49:07,293 INFO L413 NwaCegarLoop]: 471 mSDtfsCounter, 543 mSDsluCounter, 4935 mSDsCounter, 0 mSdLazyCounter, 4892 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 555 SdHoareTripleChecker+Valid, 5406 SdHoareTripleChecker+Invalid, 4931 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 4892 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.1s IncrementalHoareTripleChecker+Time [2023-12-02 14:49:07,294 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [555 Valid, 5406 Invalid, 4931 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [39 Valid, 4892 Invalid, 0 Unknown, 0 Unchecked, 10.1s Time] [2023-12-02 14:49:07,295 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1121 states. [2023-12-02 14:49:07,307 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1121 to 889. [2023-12-02 14:49:07,309 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 889 states, 531 states have (on average 1.8305084745762712) internal successors, (972), 881 states have internal predecessors, (972), 15 states have call successors, (15), 4 states have call predecessors, (15), 4 states have return successors, (14), 5 states have call predecessors, (14), 13 states have call successors, (14) [2023-12-02 14:49:07,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 889 states to 889 states and 1001 transitions. [2023-12-02 14:49:07,310 INFO L78 Accepts]: Start accepts. Automaton has 889 states and 1001 transitions. Word has length 68 [2023-12-02 14:49:07,310 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 14:49:07,310 INFO L495 AbstractCegarLoop]: Abstraction has 889 states and 1001 transitions. [2023-12-02 14:49:07,311 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 20 states have (on average 6.5) internal successors, (130), 22 states have internal predecessors, (130), 2 states have call successors, (2), 2 states have call predecessors, (2), 3 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-12-02 14:49:07,311 INFO L276 IsEmpty]: Start isEmpty. Operand 889 states and 1001 transitions. [2023-12-02 14:49:07,311 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2023-12-02 14:49:07,311 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 14:49:07,312 INFO L195 NwaCegarLoop]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 14:49:07,318 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a20cfce-99f6-4121-ba6d-6a0c58cac3fc/bin/utaipan-verify-nQ1chXbOIh/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 (22)] Ended with exit code 0 [2023-12-02 14:49:07,539 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a20cfce-99f6-4121-ba6d-6a0c58cac3fc/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Ended with exit code 0 [2023-12-02 14:49:07,719 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a20cfce-99f6-4121-ba6d-6a0c58cac3fc/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (23)] Ended with exit code 0 [2023-12-02 14:49:07,912 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a20cfce-99f6-4121-ba6d-6a0c58cac3fc/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a20cfce-99f6-4121-ba6d-6a0c58cac3fc/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a20cfce-99f6-4121-ba6d-6a0c58cac3fc/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt [2023-12-02 14:49:07,913 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr81REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 532 more)] === [2023-12-02 14:49:07,913 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 14:49:07,913 INFO L85 PathProgramCache]: Analyzing trace with hash -1657509542, now seen corresponding path program 1 times [2023-12-02 14:49:07,914 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 14:49:07,914 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [203738152] [2023-12-02 14:49:07,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 14:49:07,914 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 [2023-12-02 14:49:07,915 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a20cfce-99f6-4121-ba6d-6a0c58cac3fc/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 14:49:07,916 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a20cfce-99f6-4121-ba6d-6a0c58cac3fc/bin/utaipan-verify-nQ1chXbOIh/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) [2023-12-02 14:49:07,917 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a20cfce-99f6-4121-ba6d-6a0c58cac3fc/bin/utaipan-verify-nQ1chXbOIh/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 (25)] Waiting until timeout for monitored process [2023-12-02 14:49:08,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 14:49:08,297 INFO L262 TraceCheckSpWp]: Trace formula consists of 436 conjuncts, 13 conjunts are in the unsatisfiable core [2023-12-02 14:49:08,300 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 14:49:08,435 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 14:49:08,435 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 14:49:08,966 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 14:49:08,966 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 14:49:08,967 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [203738152] [2023-12-02 14:49:08,967 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [203738152] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 14:49:08,967 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [902248244] [2023-12-02 14:49:08,967 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 14:49:08,967 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-02 14:49:08,967 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a20cfce-99f6-4121-ba6d-6a0c58cac3fc/bin/utaipan-verify-nQ1chXbOIh/cvc4 [2023-12-02 14:49:08,968 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a20cfce-99f6-4121-ba6d-6a0c58cac3fc/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-02 14:49:08,970 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a20cfce-99f6-4121-ba6d-6a0c58cac3fc/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (26)] Waiting until timeout for monitored process [2023-12-02 14:49:09,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 14:49:09,640 INFO L262 TraceCheckSpWp]: Trace formula consists of 436 conjuncts, 13 conjunts are in the unsatisfiable core [2023-12-02 14:49:09,642 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 14:49:09,680 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 14:49:09,681 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 14:49:09,860 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 14:49:09,861 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [902248244] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 14:49:09,861 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [238792752] [2023-12-02 14:49:09,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 14:49:09,861 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 14:49:09,861 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a20cfce-99f6-4121-ba6d-6a0c58cac3fc/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 14:49:09,863 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a20cfce-99f6-4121-ba6d-6a0c58cac3fc/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 14:49:09,867 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a20cfce-99f6-4121-ba6d-6a0c58cac3fc/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2023-12-02 14:49:10,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 14:49:10,227 INFO L262 TraceCheckSpWp]: Trace formula consists of 436 conjuncts, 14 conjunts are in the unsatisfiable core [2023-12-02 14:49:10,229 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 14:49:10,310 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 14:49:10,310 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 14:49:11,141 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 14:49:11,141 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [238792752] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 14:49:11,142 INFO L185 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2023-12-02 14:49:11,142 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 14, 14, 14, 14] total 38 [2023-12-02 14:49:11,142 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1482245144] [2023-12-02 14:49:11,142 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2023-12-02 14:49:11,143 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2023-12-02 14:49:11,143 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 14:49:11,144 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2023-12-02 14:49:11,145 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=447, Invalid=959, Unknown=0, NotChecked=0, Total=1406 [2023-12-02 14:49:11,146 INFO L87 Difference]: Start difference. First operand 889 states and 1001 transitions. Second operand has 38 states, 35 states have (on average 2.7714285714285714) internal successors, (97), 38 states have internal predecessors, (97), 1 states have call successors, (1), 1 states have call predecessors, (1), 3 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2023-12-02 14:49:19,689 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 14:49:19,689 INFO L93 Difference]: Finished difference Result 919 states and 1046 transitions. [2023-12-02 14:49:19,690 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2023-12-02 14:49:19,690 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 35 states have (on average 2.7714285714285714) internal successors, (97), 38 states have internal predecessors, (97), 1 states have call successors, (1), 1 states have call predecessors, (1), 3 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 74 [2023-12-02 14:49:19,690 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 14:49:19,696 INFO L225 Difference]: With dead ends: 919 [2023-12-02 14:49:19,696 INFO L226 Difference]: Without dead ends: 916 [2023-12-02 14:49:19,698 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 471 GetRequests, 402 SyntacticMatches, 0 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 599 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=1628, Invalid=3342, Unknown=0, NotChecked=0, Total=4970 [2023-12-02 14:49:19,699 INFO L413 NwaCegarLoop]: 702 mSDtfsCounter, 26 mSDsluCounter, 11906 mSDsCounter, 0 mSdLazyCounter, 2403 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 12608 SdHoareTripleChecker+Invalid, 2451 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 2403 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.9s IncrementalHoareTripleChecker+Time [2023-12-02 14:49:19,699 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 12608 Invalid, 2451 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [48 Valid, 2403 Invalid, 0 Unknown, 0 Unchecked, 6.9s Time] [2023-12-02 14:49:19,701 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 916 states. [2023-12-02 14:49:19,721 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 916 to 907. [2023-12-02 14:49:19,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 907 states, 549 states have (on average 1.8123861566484518) internal successors, (995), 899 states have internal predecessors, (995), 15 states have call successors, (15), 4 states have call predecessors, (15), 4 states have return successors, (14), 5 states have call predecessors, (14), 13 states have call successors, (14) [2023-12-02 14:49:19,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 907 states to 907 states and 1024 transitions. [2023-12-02 14:49:19,726 INFO L78 Accepts]: Start accepts. Automaton has 907 states and 1024 transitions. Word has length 74 [2023-12-02 14:49:19,726 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 14:49:19,726 INFO L495 AbstractCegarLoop]: Abstraction has 907 states and 1024 transitions. [2023-12-02 14:49:19,726 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 35 states have (on average 2.7714285714285714) internal successors, (97), 38 states have internal predecessors, (97), 1 states have call successors, (1), 1 states have call predecessors, (1), 3 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2023-12-02 14:49:19,726 INFO L276 IsEmpty]: Start isEmpty. Operand 907 states and 1024 transitions. [2023-12-02 14:49:19,727 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2023-12-02 14:49:19,727 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 14:49:19,728 INFO L195 NwaCegarLoop]: trace histogram [22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 14:49:19,734 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a20cfce-99f6-4121-ba6d-6a0c58cac3fc/bin/utaipan-verify-nQ1chXbOIh/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 (25)] Ended with exit code 0 [2023-12-02 14:49:19,934 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a20cfce-99f6-4121-ba6d-6a0c58cac3fc/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (26)] Ended with exit code 0 [2023-12-02 14:49:20,141 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a20cfce-99f6-4121-ba6d-6a0c58cac3fc/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Forceful destruction successful, exit code 0 [2023-12-02 14:49:20,328 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a20cfce-99f6-4121-ba6d-6a0c58cac3fc/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a20cfce-99f6-4121-ba6d-6a0c58cac3fc/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt,27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a20cfce-99f6-4121-ba6d-6a0c58cac3fc/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 14:49:20,329 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr81REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 532 more)] === [2023-12-02 14:49:20,329 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 14:49:20,329 INFO L85 PathProgramCache]: Analyzing trace with hash -438184742, now seen corresponding path program 2 times [2023-12-02 14:49:20,330 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 14:49:20,330 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [389080347] [2023-12-02 14:49:20,330 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-02 14:49:20,330 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 [2023-12-02 14:49:20,330 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a20cfce-99f6-4121-ba6d-6a0c58cac3fc/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 14:49:20,331 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a20cfce-99f6-4121-ba6d-6a0c58cac3fc/bin/utaipan-verify-nQ1chXbOIh/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) [2023-12-02 14:49:20,333 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a20cfce-99f6-4121-ba6d-6a0c58cac3fc/bin/utaipan-verify-nQ1chXbOIh/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 (28)] Waiting until timeout for monitored process [2023-12-02 14:49:20,901 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-02 14:49:20,901 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-02 14:49:20,924 INFO L262 TraceCheckSpWp]: Trace formula consists of 568 conjuncts, 42 conjunts are in the unsatisfiable core [2023-12-02 14:49:20,927 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 14:49:21,621 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 14:49:21,621 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 14:49:24,318 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 14:49:24,318 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 14:49:24,318 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [389080347] [2023-12-02 14:49:24,318 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [389080347] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 14:49:24,318 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [645810620] [2023-12-02 14:49:24,318 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-02 14:49:24,318 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-02 14:49:24,319 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a20cfce-99f6-4121-ba6d-6a0c58cac3fc/bin/utaipan-verify-nQ1chXbOIh/cvc4 [2023-12-02 14:49:24,319 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a20cfce-99f6-4121-ba6d-6a0c58cac3fc/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-02 14:49:24,320 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a20cfce-99f6-4121-ba6d-6a0c58cac3fc/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (29)] Waiting until timeout for monitored process [2023-12-02 14:49:26,346 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-02 14:49:26,347 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-02 14:49:26,391 INFO L262 TraceCheckSpWp]: Trace formula consists of 568 conjuncts, 42 conjunts are in the unsatisfiable core [2023-12-02 14:49:26,394 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 14:49:26,544 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 14:49:26,544 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 14:49:27,194 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 14:49:27,194 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [645810620] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 14:49:27,194 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1428723601] [2023-12-02 14:49:27,194 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-02 14:49:27,194 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 14:49:27,195 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a20cfce-99f6-4121-ba6d-6a0c58cac3fc/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 14:49:27,195 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a20cfce-99f6-4121-ba6d-6a0c58cac3fc/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 14:49:27,196 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a20cfce-99f6-4121-ba6d-6a0c58cac3fc/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2023-12-02 14:49:59,792 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-02 14:49:59,793 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-02 14:49:59,823 INFO L262 TraceCheckSpWp]: Trace formula consists of 568 conjuncts, 64 conjunts are in the unsatisfiable core [2023-12-02 14:49:59,832 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 14:49:59,835 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2023-12-02 14:50:00,008 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-12-02 14:50:00,023 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2023-12-02 14:50:00,023 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2023-12-02 14:50:00,156 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 19 treesize of output 1 [2023-12-02 14:50:00,170 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2023-12-02 14:50:00,589 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 22 treesize of output 10 [2023-12-02 14:50:00,594 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 9 treesize of output 3 [2023-12-02 14:50:01,317 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2023-12-02 14:50:01,318 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 62 treesize of output 57 [2023-12-02 14:50:01,333 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 0 case distinctions, treesize of input 30 treesize of output 13 [2023-12-02 14:50:01,567 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 31 treesize of output 13 [2023-12-02 14:50:01,579 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 9 treesize of output 3 [2023-12-02 14:50:01,685 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 231 trivial. 0 not checked. [2023-12-02 14:50:01,685 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 14:50:02,917 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (and (forall ((v_ArrVal_2919 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_#t~mem38#1.base| v_ArrVal_2919) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (bvule (bvadd (_ bv16 32) .cse0) (bvadd .cse0 (_ bv20 32))))) (forall ((v_ArrVal_2919 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_2920 (Array (_ BitVec 32) (_ BitVec 32)))) (bvule (bvadd (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_#t~mem38#1.base| v_ArrVal_2919) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) (_ bv20 32)) (select |c_#length| (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem38#1.base| v_ArrVal_2920) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))))) is different from false [2023-12-02 14:50:02,928 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1428723601] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 14:50:02,928 INFO L185 FreeRefinementEngine]: Found 0 perfect and 5 imperfect interpolant sequences. [2023-12-02 14:50:02,929 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 26, 26, 26, 8] total 57 [2023-12-02 14:50:02,929 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [277026792] [2023-12-02 14:50:02,929 INFO L85 oduleStraightlineAll]: Using 5 imperfect interpolants to construct interpolant automaton [2023-12-02 14:50:02,930 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 57 states [2023-12-02 14:50:02,930 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 14:50:02,931 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 57 interpolants. [2023-12-02 14:50:02,933 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=697, Invalid=2728, Unknown=1, NotChecked=114, Total=3540 [2023-12-02 14:50:02,933 INFO L87 Difference]: Start difference. First operand 907 states and 1024 transitions. Second operand has 57 states, 54 states have (on average 3.1296296296296298) internal successors, (169), 57 states have internal predecessors, (169), 2 states have call successors, (2), 2 states have call predecessors, (2), 3 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-12-02 14:50:51,610 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 14:50:51,611 INFO L93 Difference]: Finished difference Result 1197 states and 1434 transitions. [2023-12-02 14:50:51,611 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 87 states. [2023-12-02 14:50:51,612 INFO L78 Accepts]: Start accepts. Automaton has has 57 states, 54 states have (on average 3.1296296296296298) internal successors, (169), 57 states have internal predecessors, (169), 2 states have call successors, (2), 2 states have call predecessors, (2), 3 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 86 [2023-12-02 14:50:51,612 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 14:50:51,619 INFO L225 Difference]: With dead ends: 1197 [2023-12-02 14:50:51,620 INFO L226 Difference]: Without dead ends: 1190 [2023-12-02 14:50:51,628 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 512 GetRequests, 372 SyntacticMatches, 1 SemanticMatches, 139 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 3720 ImplicationChecksByTransitivity, 17.8s TimeCoverageRelationStatistics Valid=3451, Invalid=16012, Unknown=1, NotChecked=276, Total=19740 [2023-12-02 14:50:51,629 INFO L413 NwaCegarLoop]: 478 mSDtfsCounter, 570 mSDsluCounter, 12969 mSDsCounter, 0 mSdLazyCounter, 14052 mSolverCounterSat, 61 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 30.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 609 SdHoareTripleChecker+Valid, 13447 SdHoareTripleChecker+Invalid, 14113 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 61 IncrementalHoareTripleChecker+Valid, 14052 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 34.8s IncrementalHoareTripleChecker+Time [2023-12-02 14:50:51,629 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [609 Valid, 13447 Invalid, 14113 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [61 Valid, 14052 Invalid, 0 Unknown, 0 Unchecked, 34.8s Time] [2023-12-02 14:50:51,632 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1190 states. [2023-12-02 14:50:51,654 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1190 to 942. [2023-12-02 14:50:51,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 942 states, 585 states have (on average 1.7743589743589743) internal successors, (1038), 934 states have internal predecessors, (1038), 15 states have call successors, (15), 4 states have call predecessors, (15), 4 states have return successors, (14), 5 states have call predecessors, (14), 13 states have call successors, (14) [2023-12-02 14:50:51,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 942 states to 942 states and 1067 transitions. [2023-12-02 14:50:51,659 INFO L78 Accepts]: Start accepts. Automaton has 942 states and 1067 transitions. Word has length 86 [2023-12-02 14:50:51,659 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 14:50:51,659 INFO L495 AbstractCegarLoop]: Abstraction has 942 states and 1067 transitions. [2023-12-02 14:50:51,659 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 57 states, 54 states have (on average 3.1296296296296298) internal successors, (169), 57 states have internal predecessors, (169), 2 states have call successors, (2), 2 states have call predecessors, (2), 3 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-12-02 14:50:51,660 INFO L276 IsEmpty]: Start isEmpty. Operand 942 states and 1067 transitions. [2023-12-02 14:50:51,661 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2023-12-02 14:50:51,661 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 14:50:51,661 INFO L195 NwaCegarLoop]: trace histogram [44, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 14:50:51,671 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a20cfce-99f6-4121-ba6d-6a0c58cac3fc/bin/utaipan-verify-nQ1chXbOIh/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 (28)] Ended with exit code 0 [2023-12-02 14:50:51,870 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a20cfce-99f6-4121-ba6d-6a0c58cac3fc/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (29)] Ended with exit code 0 [2023-12-02 14:50:52,091 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a20cfce-99f6-4121-ba6d-6a0c58cac3fc/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Ended with exit code 0 [2023-12-02 14:50:52,262 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a20cfce-99f6-4121-ba6d-6a0c58cac3fc/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,29 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a20cfce-99f6-4121-ba6d-6a0c58cac3fc/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt,30 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a20cfce-99f6-4121-ba6d-6a0c58cac3fc/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 14:50:52,262 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr84REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 532 more)] === [2023-12-02 14:50:52,263 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 14:50:52,263 INFO L85 PathProgramCache]: Analyzing trace with hash 1732991263, now seen corresponding path program 1 times [2023-12-02 14:50:52,264 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 14:50:52,264 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [910502091] [2023-12-02 14:50:52,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 14:50:52,264 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 [2023-12-02 14:50:52,264 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a20cfce-99f6-4121-ba6d-6a0c58cac3fc/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 14:50:52,265 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a20cfce-99f6-4121-ba6d-6a0c58cac3fc/bin/utaipan-verify-nQ1chXbOIh/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) [2023-12-02 14:50:52,266 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a20cfce-99f6-4121-ba6d-6a0c58cac3fc/bin/utaipan-verify-nQ1chXbOIh/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 (31)] Waiting until timeout for monitored process [2023-12-02 14:50:53,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 14:50:53,194 INFO L262 TraceCheckSpWp]: Trace formula consists of 829 conjuncts, 60 conjunts are in the unsatisfiable core [2023-12-02 14:50:53,203 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 14:50:53,206 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2023-12-02 14:50:53,347 INFO L349 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2023-12-02 14:50:53,348 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 2 case distinctions, treesize of input 19 treesize of output 27 [2023-12-02 14:50:53,380 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 19 treesize of output 1 [2023-12-02 14:50:53,507 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 24 treesize of output 12 [2023-12-02 14:50:54,686 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2023-12-02 14:50:54,686 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 44 treesize of output 43 [2023-12-02 14:50:54,843 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2023-12-02 14:50:54,843 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 44 treesize of output 43 [2023-12-02 14:50:54,862 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 33 treesize of output 15 [2023-12-02 14:50:54,912 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 946 trivial. 0 not checked. [2023-12-02 14:50:54,913 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 14:50:54,985 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_3343 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (select |c_#valid| (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem40#1.base| v_ArrVal_3343) |c_ULTIMATE.start_main_~user~0#1.base|) (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (_ bv1 1)))) is different from false [2023-12-02 14:50:54,998 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_3343 (Array (_ BitVec 32) (_ BitVec 32)))) (= (bvadd (select |c_#valid| (let ((.cse0 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (store |c_#memory_$Pointer$.base| (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse0) v_ArrVal_3343) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0))) (_ bv1 1)) (_ bv0 1))) is different from false [2023-12-02 14:50:55,486 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_3343 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_3389 (Array (_ BitVec 32) (_ BitVec 32)))) (= (bvadd (select |c_#valid| (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (let ((.cse0 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem38#1.base| v_ArrVal_3389))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_3343)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (_ bv1 1)) (_ bv0 1))) is different from false [2023-12-02 14:50:55,489 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 14:50:55,489 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [910502091] [2023-12-02 14:50:55,489 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [910502091] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 14:50:55,489 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [533457912] [2023-12-02 14:50:55,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 14:50:55,490 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-02 14:50:55,490 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a20cfce-99f6-4121-ba6d-6a0c58cac3fc/bin/utaipan-verify-nQ1chXbOIh/cvc4 [2023-12-02 14:50:55,491 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a20cfce-99f6-4121-ba6d-6a0c58cac3fc/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-02 14:50:55,492 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a20cfce-99f6-4121-ba6d-6a0c58cac3fc/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (32)] Waiting until timeout for monitored process [2023-12-02 14:50:59,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 14:51:00,052 INFO L262 TraceCheckSpWp]: Trace formula consists of 829 conjuncts, 63 conjunts are in the unsatisfiable core [2023-12-02 14:51:00,063 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 14:51:00,069 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 0 case distinctions, treesize of input 6 treesize of output 7 [2023-12-02 14:51:00,366 INFO L349 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2023-12-02 14:51:00,367 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 2 case distinctions, treesize of input 19 treesize of output 27 [2023-12-02 14:51:00,430 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 15 treesize of output 1 [2023-12-02 14:51:00,611 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 20 treesize of output 12 [2023-12-02 14:51:01,624 INFO L349 Elim1Store]: treesize reduction 19, result has 20.8 percent of original size [2023-12-02 14:51:01,624 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 36 treesize of output 35 [2023-12-02 14:51:01,809 INFO L349 Elim1Store]: treesize reduction 19, result has 20.8 percent of original size [2023-12-02 14:51:01,809 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 36 treesize of output 35 [2023-12-02 14:51:01,828 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 27 treesize of output 15 [2023-12-02 14:51:01,840 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 946 trivial. 0 not checked. [2023-12-02 14:51:01,840 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 14:51:06,495 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_3813 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_3859 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (select |c_#valid| (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (let ((.cse0 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem38#1.base| v_ArrVal_3859))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_3813)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (_ bv1 1)))) is different from false [2023-12-02 14:51:06,499 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [533457912] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 14:51:06,499 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [419370041] [2023-12-02 14:51:06,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 14:51:06,499 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 14:51:06,499 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a20cfce-99f6-4121-ba6d-6a0c58cac3fc/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 14:51:06,500 INFO L229 MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a20cfce-99f6-4121-ba6d-6a0c58cac3fc/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 14:51:06,501 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a20cfce-99f6-4121-ba6d-6a0c58cac3fc/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Waiting until timeout for monitored process [2023-12-02 14:51:07,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 14:51:07,178 INFO L262 TraceCheckSpWp]: Trace formula consists of 829 conjuncts, 58 conjunts are in the unsatisfiable core [2023-12-02 14:51:07,186 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 14:51:07,190 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2023-12-02 14:51:07,322 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2023-12-02 14:51:07,323 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2023-12-02 14:51:07,364 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 19 treesize of output 1 [2023-12-02 14:51:08,158 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2023-12-02 14:51:08,158 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 44 treesize of output 43 [2023-12-02 14:51:10,360 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2023-12-02 14:51:10,361 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 44 treesize of output 43 [2023-12-02 14:51:10,375 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 33 treesize of output 15 [2023-12-02 14:51:10,380 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 946 trivial. 0 not checked. [2023-12-02 14:51:10,380 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 14:51:12,975 INFO L349 Elim1Store]: treesize reduction 7, result has 77.4 percent of original size [2023-12-02 14:51:12,976 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 37 treesize of output 36 [2023-12-02 14:51:12,988 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_3813 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_4327 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_ULTIMATE.start_main_#t~mem38#1.base| (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (let ((.cse0 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem38#1.base| v_ArrVal_4327))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_3813)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))) is different from false [2023-12-02 14:51:12,991 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [419370041] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 14:51:12,991 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-02 14:51:12,992 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 11] total 23 [2023-12-02 14:51:12,992 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1293093873] [2023-12-02 14:51:12,992 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-02 14:51:12,992 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2023-12-02 14:51:12,992 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 14:51:12,993 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2023-12-02 14:51:12,994 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=130, Invalid=581, Unknown=11, NotChecked=270, Total=992 [2023-12-02 14:51:12,994 INFO L87 Difference]: Start difference. First operand 942 states and 1067 transitions. Second operand has 24 states, 20 states have (on average 6.9) internal successors, (138), 23 states have internal predecessors, (138), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-12-02 14:51:26,542 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 14:51:26,542 INFO L93 Difference]: Finished difference Result 1170 states and 1375 transitions. [2023-12-02 14:51:26,543 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-02 14:51:26,543 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 20 states have (on average 6.9) internal successors, (138), 23 states have internal predecessors, (138), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 110 [2023-12-02 14:51:26,543 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 14:51:26,550 INFO L225 Difference]: With dead ends: 1170 [2023-12-02 14:51:26,550 INFO L226 Difference]: Without dead ends: 1170 [2023-12-02 14:51:26,551 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 348 GetRequests, 311 SyntacticMatches, 4 SemanticMatches, 33 ConstructedPredicates, 5 IntricatePredicates, 0 DeprecatedPredicates, 298 ImplicationChecksByTransitivity, 9.4s TimeCoverageRelationStatistics Valid=154, Invalid=725, Unknown=11, NotChecked=300, Total=1190 [2023-12-02 14:51:26,551 INFO L413 NwaCegarLoop]: 470 mSDtfsCounter, 521 mSDsluCounter, 4689 mSDsCounter, 0 mSdLazyCounter, 5295 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 529 SdHoareTripleChecker+Valid, 5159 SdHoareTripleChecker+Invalid, 5316 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 5295 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13.2s IncrementalHoareTripleChecker+Time [2023-12-02 14:51:26,552 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [529 Valid, 5159 Invalid, 5316 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [21 Valid, 5295 Invalid, 0 Unknown, 0 Unchecked, 13.2s Time] [2023-12-02 14:51:26,554 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1170 states. [2023-12-02 14:51:26,572 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1170 to 941. [2023-12-02 14:51:26,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 941 states, 585 states have (on average 1.7726495726495726) internal successors, (1037), 933 states have internal predecessors, (1037), 15 states have call successors, (15), 4 states have call predecessors, (15), 4 states have return successors, (14), 5 states have call predecessors, (14), 13 states have call successors, (14) [2023-12-02 14:51:26,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 941 states to 941 states and 1066 transitions. [2023-12-02 14:51:26,576 INFO L78 Accepts]: Start accepts. Automaton has 941 states and 1066 transitions. Word has length 110 [2023-12-02 14:51:26,577 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 14:51:26,577 INFO L495 AbstractCegarLoop]: Abstraction has 941 states and 1066 transitions. [2023-12-02 14:51:26,577 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 20 states have (on average 6.9) internal successors, (138), 23 states have internal predecessors, (138), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-12-02 14:51:26,577 INFO L276 IsEmpty]: Start isEmpty. Operand 941 states and 1066 transitions. [2023-12-02 14:51:26,578 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2023-12-02 14:51:26,578 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 14:51:26,579 INFO L195 NwaCegarLoop]: trace histogram [44, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 14:51:26,589 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a20cfce-99f6-4121-ba6d-6a0c58cac3fc/bin/utaipan-verify-nQ1chXbOIh/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 (31)] Ended with exit code 0 [2023-12-02 14:51:26,794 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a20cfce-99f6-4121-ba6d-6a0c58cac3fc/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (32)] Ended with exit code 0 [2023-12-02 14:51:26,996 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a20cfce-99f6-4121-ba6d-6a0c58cac3fc/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Ended with exit code 0 [2023-12-02 14:51:27,179 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a20cfce-99f6-4121-ba6d-6a0c58cac3fc/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,32 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a20cfce-99f6-4121-ba6d-6a0c58cac3fc/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt,33 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a20cfce-99f6-4121-ba6d-6a0c58cac3fc/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 14:51:27,180 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr85REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 532 more)] === [2023-12-02 14:51:27,180 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 14:51:27,180 INFO L85 PathProgramCache]: Analyzing trace with hash 1732991264, now seen corresponding path program 1 times [2023-12-02 14:51:27,181 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 14:51:27,181 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [824232894] [2023-12-02 14:51:27,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 14:51:27,182 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 [2023-12-02 14:51:27,182 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a20cfce-99f6-4121-ba6d-6a0c58cac3fc/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 14:51:27,183 INFO L229 MonitoredProcess]: Starting monitored process 34 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a20cfce-99f6-4121-ba6d-6a0c58cac3fc/bin/utaipan-verify-nQ1chXbOIh/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) [2023-12-02 14:51:27,184 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a20cfce-99f6-4121-ba6d-6a0c58cac3fc/bin/utaipan-verify-nQ1chXbOIh/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 (34)] Waiting until timeout for monitored process [2023-12-02 14:51:28,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 14:51:28,151 INFO L262 TraceCheckSpWp]: Trace formula consists of 829 conjuncts, 114 conjunts are in the unsatisfiable core [2023-12-02 14:51:28,163 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 14:51:28,170 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2023-12-02 14:51:28,526 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-12-02 14:51:28,546 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2023-12-02 14:51:28,546 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2023-12-02 14:51:28,583 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-12-02 14:51:28,593 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 15 treesize of output 1 [2023-12-02 14:51:28,731 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 18 treesize of output 10 [2023-12-02 14:51:28,737 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 7 treesize of output 3 [2023-12-02 14:51:29,546 INFO L349 Elim1Store]: treesize reduction 19, result has 20.8 percent of original size [2023-12-02 14:51:29,547 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 50 treesize of output 45 [2023-12-02 14:51:29,561 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 0 case distinctions, treesize of input 24 treesize of output 11 [2023-12-02 14:51:29,689 INFO L349 Elim1Store]: treesize reduction 19, result has 20.8 percent of original size [2023-12-02 14:51:29,690 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 50 treesize of output 45 [2023-12-02 14:51:29,702 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 0 case distinctions, treesize of input 24 treesize of output 11 [2023-12-02 14:51:29,719 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 25 treesize of output 13 [2023-12-02 14:51:29,727 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 7 treesize of output 3 [2023-12-02 14:51:29,759 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 946 trivial. 0 not checked. [2023-12-02 14:51:29,759 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 14:51:29,947 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse0 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (and (forall ((v_ArrVal_4797 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_4796 (Array (_ BitVec 32) (_ BitVec 32)))) (bvule (bvadd (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_#t~mem40#1.base| v_ArrVal_4796) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0) (_ bv8 32)) (select |c_#length| (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem40#1.base| v_ArrVal_4797) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0)))) (forall ((v_ArrVal_4796 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse1 (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_#t~mem40#1.base| v_ArrVal_4796) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0))) (bvule (bvadd (_ bv4 32) .cse1) (bvadd .cse1 (_ bv8 32))))))) is different from false [2023-12-02 14:51:29,991 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse2 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (let ((.cse1 (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (and (forall ((v_ArrVal_4796 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (select (store |c_#memory_$Pointer$.offset| .cse1 v_ArrVal_4796) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (bvule (bvadd (_ bv4 32) .cse0) (bvadd (_ bv8 32) .cse0)))) (forall ((v_ArrVal_4797 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_4796 (Array (_ BitVec 32) (_ BitVec 32)))) (bvule (bvadd (_ bv8 32) (select (select (store |c_#memory_$Pointer$.offset| .cse1 v_ArrVal_4796) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2)) (select |c_#length| (select (select (store |c_#memory_$Pointer$.base| .cse1 v_ArrVal_4797) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))))))) is different from false [2023-12-02 14:51:31,705 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (and (forall ((v_ArrVal_4889 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_4888 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_4797 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_4796 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse2 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem38#1.base| v_ArrVal_4889))) (let ((.cse0 (select (select .cse2 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (bvule (bvadd (_ bv8 32) (select (select (store (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_#t~mem38#1.base| v_ArrVal_4888) .cse0 v_ArrVal_4796) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)) (select |c_#length| (select (select (store .cse2 .cse0 v_ArrVal_4797) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))))) (forall ((v_ArrVal_4889 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_4888 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_4796 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse3 (select (select (store (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_#t~mem38#1.base| v_ArrVal_4888) (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem38#1.base| v_ArrVal_4889) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_4796) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (bvule (bvadd (_ bv4 32) .cse3) (bvadd (_ bv8 32) .cse3)))))) is different from false [2023-12-02 14:51:31,716 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 14:51:31,716 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [824232894] [2023-12-02 14:51:31,716 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [824232894] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 14:51:31,717 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [64503644] [2023-12-02 14:51:31,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 14:51:31,717 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-02 14:51:31,717 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a20cfce-99f6-4121-ba6d-6a0c58cac3fc/bin/utaipan-verify-nQ1chXbOIh/cvc4 [2023-12-02 14:51:31,718 INFO L229 MonitoredProcess]: Starting monitored process 35 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a20cfce-99f6-4121-ba6d-6a0c58cac3fc/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-02 14:51:31,719 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a20cfce-99f6-4121-ba6d-6a0c58cac3fc/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (35)] Waiting until timeout for monitored process [2023-12-02 14:53:48,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 14:53:48,272 INFO L262 TraceCheckSpWp]: Trace formula consists of 829 conjuncts, 113 conjunts are in the unsatisfiable core [2023-12-02 14:53:48,284 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 14:53:48,288 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2023-12-02 14:53:48,582 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-12-02 14:53:48,599 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2023-12-02 14:53:48,599 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2023-12-02 14:53:48,616 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 15 treesize of output 1 [2023-12-02 14:53:48,631 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-12-02 14:53:48,702 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 18 treesize of output 10 [2023-12-02 14:53:48,708 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 7 treesize of output 3 [2023-12-02 14:53:49,482 INFO L349 Elim1Store]: treesize reduction 19, result has 20.8 percent of original size [2023-12-02 14:53:49,483 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 50 treesize of output 45 [2023-12-02 14:53:49,497 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 0 case distinctions, treesize of input 24 treesize of output 11 [2023-12-02 14:53:49,596 INFO L349 Elim1Store]: treesize reduction 19, result has 20.8 percent of original size [2023-12-02 14:53:49,597 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 50 treesize of output 45 [2023-12-02 14:53:49,612 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 0 case distinctions, treesize of input 24 treesize of output 11 [2023-12-02 14:53:49,633 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 25 treesize of output 13 [2023-12-02 14:53:49,643 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 7 treesize of output 3 [2023-12-02 14:53:49,649 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 946 trivial. 0 not checked. [2023-12-02 14:53:49,649 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 14:53:49,714 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (and (forall ((v_ArrVal_5358 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_#t~mem40#1.base| v_ArrVal_5358) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (bvule (bvadd (_ bv4 32) .cse0) (bvadd (_ bv8 32) .cse0)))) (forall ((v_ArrVal_5359 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_5358 (Array (_ BitVec 32) (_ BitVec 32)))) (bvule (bvadd (_ bv8 32) (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_#t~mem40#1.base| v_ArrVal_5358) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)) (select |c_#length| (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem40#1.base| v_ArrVal_5359) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))))) is different from false [2023-12-02 14:53:49,760 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse2 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (let ((.cse1 (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (and (forall ((v_ArrVal_5358 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (select (store |c_#memory_$Pointer$.offset| .cse1 v_ArrVal_5358) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (bvule (bvadd (_ bv4 32) .cse0) (bvadd (_ bv8 32) .cse0)))) (forall ((v_ArrVal_5359 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_5358 (Array (_ BitVec 32) (_ BitVec 32)))) (bvule (bvadd (_ bv8 32) (select (select (store |c_#memory_$Pointer$.offset| .cse1 v_ArrVal_5358) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2)) (select |c_#length| (select (select (store |c_#memory_$Pointer$.base| .cse1 v_ArrVal_5359) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))))))) is different from false [2023-12-02 14:53:51,604 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (and (forall ((v_ArrVal_5358 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_5450 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_5451 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (select (store (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_#t~mem38#1.base| v_ArrVal_5451) (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem38#1.base| v_ArrVal_5450) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_5358) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (bvule (bvadd (_ bv4 32) .cse0) (bvadd (_ bv8 32) .cse0)))) (forall ((v_ArrVal_5359 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_5358 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_5450 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_5451 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse3 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem38#1.base| v_ArrVal_5450))) (let ((.cse2 (select (select .cse3 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (bvule (bvadd (_ bv8 32) (select (select (store (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_#t~mem38#1.base| v_ArrVal_5451) .cse2 v_ArrVal_5358) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)) (select |c_#length| (select (select (store .cse3 .cse2 v_ArrVal_5359) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))))))) is different from false [2023-12-02 14:53:51,616 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [64503644] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 14:53:51,616 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [342810328] [2023-12-02 14:53:51,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 14:53:51,616 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 14:53:51,616 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a20cfce-99f6-4121-ba6d-6a0c58cac3fc/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 14:53:51,617 INFO L229 MonitoredProcess]: Starting monitored process 36 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a20cfce-99f6-4121-ba6d-6a0c58cac3fc/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 14:53:51,618 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a20cfce-99f6-4121-ba6d-6a0c58cac3fc/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Waiting until timeout for monitored process [2023-12-02 14:53:52,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 14:53:52,338 INFO L262 TraceCheckSpWp]: Trace formula consists of 829 conjuncts, 111 conjunts are in the unsatisfiable core [2023-12-02 14:53:52,351 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 14:53:52,355 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2023-12-02 14:53:52,543 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2023-12-02 14:53:52,543 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2023-12-02 14:53:52,551 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 5 [2023-12-02 14:53:52,615 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 19 treesize of output 1 [2023-12-02 14:53:52,626 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2023-12-02 14:53:52,812 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 22 treesize of output 10 [2023-12-02 14:53:52,818 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 9 treesize of output 3 [2023-12-02 14:53:53,620 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2023-12-02 14:53:53,620 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 62 treesize of output 57 [2023-12-02 14:53:53,632 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 0 case distinctions, treesize of input 30 treesize of output 13 [2023-12-02 14:53:53,835 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2023-12-02 14:53:53,835 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 62 treesize of output 57 [2023-12-02 14:53:53,847 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 0 case distinctions, treesize of input 30 treesize of output 13 [2023-12-02 14:53:53,868 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 31 treesize of output 13 [2023-12-02 14:53:53,877 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 9 treesize of output 3 [2023-12-02 14:53:53,881 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 946 trivial. 0 not checked. [2023-12-02 14:53:53,882 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 14:53:53,942 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse0 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (and (forall ((v_ArrVal_5920 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_5921 (Array (_ BitVec 32) (_ BitVec 32)))) (bvule (bvadd (_ bv8 32) (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_#t~mem40#1.base| v_ArrVal_5921) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0)) (select |c_#length| (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem40#1.base| v_ArrVal_5920) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0)))) (forall ((v_ArrVal_5921 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse1 (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_#t~mem40#1.base| v_ArrVal_5921) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0))) (bvule (bvadd (_ bv4 32) .cse1) (bvadd (_ bv8 32) .cse1)))))) is different from false [2023-12-02 14:53:53,984 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse2 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (let ((.cse1 (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (and (forall ((v_ArrVal_5921 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (select (store |c_#memory_$Pointer$.offset| .cse1 v_ArrVal_5921) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (bvule (bvadd (_ bv4 32) .cse0) (bvadd (_ bv8 32) .cse0)))) (forall ((v_ArrVal_5920 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_5921 (Array (_ BitVec 32) (_ BitVec 32)))) (bvule (bvadd (_ bv8 32) (select (select (store |c_#memory_$Pointer$.offset| .cse1 v_ArrVal_5921) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2)) (select |c_#length| (select (select (store |c_#memory_$Pointer$.base| .cse1 v_ArrVal_5920) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))))))) is different from false [2023-12-02 14:53:55,566 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (and (forall ((v_ArrVal_5920 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_5921 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_6012 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_6013 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse2 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem38#1.base| v_ArrVal_6013))) (let ((.cse0 (select (select .cse2 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (bvule (bvadd (_ bv8 32) (select (select (store (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_#t~mem38#1.base| v_ArrVal_6012) .cse0 v_ArrVal_5921) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)) (select |c_#length| (select (select (store .cse2 .cse0 v_ArrVal_5920) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))))) (forall ((v_ArrVal_5921 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_6012 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_6013 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse3 (select (select (store (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_#t~mem38#1.base| v_ArrVal_6012) (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem38#1.base| v_ArrVal_6013) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_5921) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (bvule (bvadd (_ bv4 32) .cse3) (bvadd (_ bv8 32) .cse3)))))) is different from false [2023-12-02 14:53:55,578 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [342810328] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 14:53:55,578 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-02 14:53:55,578 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 14 [2023-12-02 14:53:55,578 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1104244980] [2023-12-02 14:53:55,579 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-02 14:53:55,579 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-12-02 14:53:55,579 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 14:53:55,580 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-12-02 14:53:55,580 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=231, Unknown=9, NotChecked=342, Total=650 [2023-12-02 14:53:55,581 INFO L87 Difference]: Start difference. First operand 941 states and 1066 transitions. Second operand has 15 states, 12 states have (on average 10.333333333333334) internal successors, (124), 15 states have internal predecessors, (124), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-12-02 14:54:07,970 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 14:54:07,970 INFO L93 Difference]: Finished difference Result 1168 states and 1373 transitions. [2023-12-02 14:54:07,971 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-12-02 14:54:07,971 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 12 states have (on average 10.333333333333334) internal successors, (124), 15 states have internal predecessors, (124), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 110 [2023-12-02 14:54:07,972 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 14:54:07,978 INFO L225 Difference]: With dead ends: 1168 [2023-12-02 14:54:07,978 INFO L226 Difference]: Without dead ends: 1168 [2023-12-02 14:54:07,979 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 350 GetRequests, 316 SyntacticMatches, 5 SemanticMatches, 29 ConstructedPredicates, 9 IntricatePredicates, 0 DeprecatedPredicates, 88 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=111, Invalid=378, Unknown=9, NotChecked=432, Total=930 [2023-12-02 14:54:07,979 INFO L413 NwaCegarLoop]: 478 mSDtfsCounter, 521 mSDsluCounter, 2324 mSDsCounter, 0 mSdLazyCounter, 4460 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 528 SdHoareTripleChecker+Valid, 2802 SdHoareTripleChecker+Invalid, 4469 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 4460 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.0s IncrementalHoareTripleChecker+Time [2023-12-02 14:54:07,980 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [528 Valid, 2802 Invalid, 4469 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 4460 Invalid, 0 Unknown, 0 Unchecked, 12.0s Time] [2023-12-02 14:54:07,981 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1168 states. [2023-12-02 14:54:07,992 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1168 to 940. [2023-12-02 14:54:07,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 940 states, 585 states have (on average 1.7709401709401709) internal successors, (1036), 932 states have internal predecessors, (1036), 15 states have call successors, (15), 4 states have call predecessors, (15), 4 states have return successors, (14), 5 states have call predecessors, (14), 13 states have call successors, (14) [2023-12-02 14:54:07,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 940 states to 940 states and 1065 transitions. [2023-12-02 14:54:07,995 INFO L78 Accepts]: Start accepts. Automaton has 940 states and 1065 transitions. Word has length 110 [2023-12-02 14:54:07,996 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 14:54:07,996 INFO L495 AbstractCegarLoop]: Abstraction has 940 states and 1065 transitions. [2023-12-02 14:54:07,996 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 12 states have (on average 10.333333333333334) internal successors, (124), 15 states have internal predecessors, (124), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-12-02 14:54:07,996 INFO L276 IsEmpty]: Start isEmpty. Operand 940 states and 1065 transitions. [2023-12-02 14:54:07,997 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2023-12-02 14:54:07,997 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 14:54:07,997 INFO L195 NwaCegarLoop]: trace histogram [44, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 14:54:08,018 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a20cfce-99f6-4121-ba6d-6a0c58cac3fc/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Ended with exit code 0 [2023-12-02 14:54:08,208 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a20cfce-99f6-4121-ba6d-6a0c58cac3fc/bin/utaipan-verify-nQ1chXbOIh/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 (34)] Ended with exit code 0 [2023-12-02 14:54:08,437 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a20cfce-99f6-4121-ba6d-6a0c58cac3fc/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (35)] Ended with exit code 0 [2023-12-02 14:54:08,598 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a20cfce-99f6-4121-ba6d-6a0c58cac3fc/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,34 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a20cfce-99f6-4121-ba6d-6a0c58cac3fc/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,35 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a20cfce-99f6-4121-ba6d-6a0c58cac3fc/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt [2023-12-02 14:54:08,598 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr88REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 532 more)] === [2023-12-02 14:54:08,598 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 14:54:08,599 INFO L85 PathProgramCache]: Analyzing trace with hash -1041315264, now seen corresponding path program 1 times [2023-12-02 14:54:08,600 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 14:54:08,600 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1316894163] [2023-12-02 14:54:08,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 14:54:08,600 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 [2023-12-02 14:54:08,600 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a20cfce-99f6-4121-ba6d-6a0c58cac3fc/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 14:54:08,601 INFO L229 MonitoredProcess]: Starting monitored process 37 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a20cfce-99f6-4121-ba6d-6a0c58cac3fc/bin/utaipan-verify-nQ1chXbOIh/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) [2023-12-02 14:54:08,603 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a20cfce-99f6-4121-ba6d-6a0c58cac3fc/bin/utaipan-verify-nQ1chXbOIh/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 (37)] Waiting until timeout for monitored process [2023-12-02 14:54:09,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 14:54:09,725 INFO L262 TraceCheckSpWp]: Trace formula consists of 857 conjuncts, 61 conjunts are in the unsatisfiable core [2023-12-02 14:54:09,732 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 14:54:09,736 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2023-12-02 14:54:09,906 INFO L349 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2023-12-02 14:54:09,906 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 2 case distinctions, treesize of input 19 treesize of output 27 [2023-12-02 14:54:09,948 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 19 treesize of output 1 [2023-12-02 14:54:10,047 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 24 treesize of output 12 [2023-12-02 14:54:11,154 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2023-12-02 14:54:11,154 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 44 treesize of output 43 [2023-12-02 14:54:11,286 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2023-12-02 14:54:11,287 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 44 treesize of output 43 [2023-12-02 14:54:11,378 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2023-12-02 14:54:11,379 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 44 treesize of output 43 [2023-12-02 14:54:11,397 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 33 treesize of output 15 [2023-12-02 14:54:11,455 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 946 trivial. 0 not checked. [2023-12-02 14:54:11,455 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 14:54:11,534 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_6452 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (select |c_#valid| (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem41#1.base| v_ArrVal_6452) |c_ULTIMATE.start_main_~user~0#1.base|) (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (_ bv1 1)))) is different from false [2023-12-02 14:54:11,547 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_6452 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (select |c_#valid| (let ((.cse0 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (store |c_#memory_$Pointer$.base| (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse0) v_ArrVal_6452) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0))) (_ bv1 1)))) is different from false [2023-12-02 14:54:11,563 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_6451 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_6452 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (select |c_#valid| (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (let ((.cse0 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem40#1.base| v_ArrVal_6451))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_6452)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (_ bv1 1)))) is different from false [2023-12-02 14:54:11,579 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_6451 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_6452 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (select |c_#valid| (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (let ((.cse0 (store |c_#memory_$Pointer$.base| (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_6451))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_6452)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (_ bv1 1)))) is different from false [2023-12-02 14:54:12,076 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_6451 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_6452 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_6498 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (select |c_#valid| (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (let ((.cse0 (let ((.cse2 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem38#1.base| v_ArrVal_6498))) (store .cse2 (select (select .cse2 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_6451)))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_6452)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (_ bv1 1)))) is different from false [2023-12-02 14:54:12,081 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 14:54:12,081 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1316894163] [2023-12-02 14:54:12,081 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1316894163] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 14:54:12,081 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1962620423] [2023-12-02 14:54:12,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 14:54:12,082 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-02 14:54:12,082 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a20cfce-99f6-4121-ba6d-6a0c58cac3fc/bin/utaipan-verify-nQ1chXbOIh/cvc4 [2023-12-02 14:54:12,083 INFO L229 MonitoredProcess]: Starting monitored process 38 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a20cfce-99f6-4121-ba6d-6a0c58cac3fc/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-02 14:54:12,084 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a20cfce-99f6-4121-ba6d-6a0c58cac3fc/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (38)] Waiting until timeout for monitored process [2023-12-02 14:54:43,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 14:54:43,399 INFO L262 TraceCheckSpWp]: Trace formula consists of 857 conjuncts, 65 conjunts are in the unsatisfiable core [2023-12-02 14:54:43,407 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 14:54:43,414 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2023-12-02 14:54:43,769 INFO L349 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2023-12-02 14:54:43,770 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 2 case distinctions, treesize of input 19 treesize of output 27 [2023-12-02 14:54:43,863 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 15 treesize of output 1 [2023-12-02 14:54:44,045 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 20 treesize of output 12 [2023-12-02 14:54:45,099 INFO L349 Elim1Store]: treesize reduction 19, result has 20.8 percent of original size [2023-12-02 14:54:45,100 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 36 treesize of output 35 [2023-12-02 14:54:45,298 INFO L349 Elim1Store]: treesize reduction 19, result has 20.8 percent of original size [2023-12-02 14:54:45,298 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 36 treesize of output 35 [2023-12-02 14:54:45,426 INFO L349 Elim1Store]: treesize reduction 19, result has 20.8 percent of original size [2023-12-02 14:54:45,426 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 36 treesize of output 35 [2023-12-02 14:54:45,443 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 27 treesize of output 15 [2023-12-02 14:54:45,455 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 946 trivial. 0 not checked. [2023-12-02 14:54:45,456 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 14:54:45,475 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_6938 (Array (_ BitVec 32) (_ BitVec 32)))) (= (bvadd (select |c_#valid| (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem41#1.base| v_ArrVal_6938) |c_ULTIMATE.start_main_~user~0#1.base|) (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (_ bv1 1)) (_ bv0 1))) is different from false [2023-12-02 14:54:45,647 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_6937 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_6938 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (_ bv1 1) (select |c_#valid| (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (let ((.cse0 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem40#1.base| v_ArrVal_6937))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_6938)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))))) is different from false [2023-12-02 14:54:45,664 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_6937 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_6938 (Array (_ BitVec 32) (_ BitVec 32)))) (= (bvadd (select |c_#valid| (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (let ((.cse0 (store |c_#memory_$Pointer$.base| (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_6937))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_6938)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (_ bv1 1)) (_ bv0 1))) is different from false [2023-12-02 14:54:46,162 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_6937 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_6938 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_6984 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (select |c_#valid| (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (let ((.cse0 (let ((.cse2 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem38#1.base| v_ArrVal_6984))) (store .cse2 (select (select .cse2 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_6937)))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_6938)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (_ bv1 1)))) is different from false [2023-12-02 14:54:46,167 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1962620423] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 14:54:46,167 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1554306351] [2023-12-02 14:54:46,167 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 14:54:46,167 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 14:54:46,168 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a20cfce-99f6-4121-ba6d-6a0c58cac3fc/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 14:54:46,169 INFO L229 MonitoredProcess]: Starting monitored process 39 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a20cfce-99f6-4121-ba6d-6a0c58cac3fc/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 14:54:46,171 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a20cfce-99f6-4121-ba6d-6a0c58cac3fc/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Waiting until timeout for monitored process [2023-12-02 14:54:46,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 14:54:46,961 INFO L262 TraceCheckSpWp]: Trace formula consists of 857 conjuncts, 60 conjunts are in the unsatisfiable core [2023-12-02 14:54:46,970 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 14:54:46,974 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2023-12-02 14:54:47,101 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2023-12-02 14:54:47,102 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2023-12-02 14:54:47,146 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 19 treesize of output 1 [2023-12-02 14:54:47,614 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2023-12-02 14:54:47,615 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 31 treesize of output 32 [2023-12-02 14:54:47,722 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2023-12-02 14:54:47,722 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 31 treesize of output 32 [2023-12-02 14:54:47,827 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2023-12-02 14:54:47,828 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 44 treesize of output 43 [2023-12-02 14:54:49,915 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 33 treesize of output 15 [2023-12-02 14:54:49,920 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 946 trivial. 0 not checked. [2023-12-02 14:54:49,920 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 14:54:49,960 INFO L349 Elim1Store]: treesize reduction 7, result has 63.2 percent of original size [2023-12-02 14:54:49,960 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 24 [2023-12-02 14:54:50,104 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_7422 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (let ((.cse0 (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (= .cse0 (select (select (store |c_#memory_$Pointer$.base| .cse0 v_ArrVal_7422) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))))) is different from false [2023-12-02 14:54:50,118 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_7421 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7422 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem40#1.base| v_ArrVal_7421)) (.cse2 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (let ((.cse1 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (= (select (select (store .cse0 .cse1 v_ArrVal_7422) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2) .cse1)))) is different from false [2023-12-02 14:54:50,133 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_7421 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7422 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse2 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (let ((.cse0 (store |c_#memory_$Pointer$.base| (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse2) v_ArrVal_7421))) (let ((.cse1 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (= (select (select (store .cse0 .cse1 v_ArrVal_7422) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2) .cse1))))) is different from false [2023-12-02 14:54:50,537 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_7468 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7421 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7422 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse2 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (let ((.cse1 (let ((.cse3 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem38#1.base| v_ArrVal_7468))) (store .cse3 (select (select .cse3 |c_ULTIMATE.start_main_~user~0#1.base|) .cse2) v_ArrVal_7421)))) (let ((.cse0 (select (select .cse1 |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (= .cse0 (select (select (store .cse1 .cse0 v_ArrVal_7422) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2)))))) is different from false [2023-12-02 14:54:50,540 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1554306351] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 14:54:50,540 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-02 14:54:50,541 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 11] total 25 [2023-12-02 14:54:50,541 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [518787925] [2023-12-02 14:54:50,541 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-02 14:54:50,541 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2023-12-02 14:54:50,542 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 14:54:50,542 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2023-12-02 14:54:50,543 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=167, Invalid=673, Unknown=24, NotChecked=858, Total=1722 [2023-12-02 14:54:50,543 INFO L87 Difference]: Start difference. First operand 940 states and 1065 transitions. Second operand has 26 states, 22 states have (on average 6.545454545454546) internal successors, (144), 26 states have internal predecessors, (144), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-12-02 14:55:05,897 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 14:55:05,897 INFO L93 Difference]: Finished difference Result 1168 states and 1373 transitions. [2023-12-02 14:55:05,898 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-02 14:55:05,898 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 22 states have (on average 6.545454545454546) internal successors, (144), 26 states have internal predecessors, (144), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 112 [2023-12-02 14:55:05,899 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 14:55:05,905 INFO L225 Difference]: With dead ends: 1168 [2023-12-02 14:55:05,905 INFO L226 Difference]: Without dead ends: 1168 [2023-12-02 14:55:05,906 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 358 GetRequests, 314 SyntacticMatches, 3 SemanticMatches, 41 ConstructedPredicates, 13 IntricatePredicates, 0 DeprecatedPredicates, 293 ImplicationChecksByTransitivity, 3.6s TimeCoverageRelationStatistics Valid=179, Invalid=719, Unknown=24, NotChecked=884, Total=1806 [2023-12-02 14:55:05,906 INFO L413 NwaCegarLoop]: 470 mSDtfsCounter, 515 mSDsluCounter, 5751 mSDsCounter, 0 mSdLazyCounter, 6284 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 523 SdHoareTripleChecker+Valid, 6221 SdHoareTripleChecker+Invalid, 6305 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 6284 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 15.1s IncrementalHoareTripleChecker+Time [2023-12-02 14:55:05,907 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [523 Valid, 6221 Invalid, 6305 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [21 Valid, 6284 Invalid, 0 Unknown, 0 Unchecked, 15.1s Time] [2023-12-02 14:55:05,908 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1168 states. [2023-12-02 14:55:05,919 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1168 to 939. [2023-12-02 14:55:05,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 939 states, 585 states have (on average 1.7692307692307692) internal successors, (1035), 931 states have internal predecessors, (1035), 15 states have call successors, (15), 4 states have call predecessors, (15), 4 states have return successors, (14), 5 states have call predecessors, (14), 13 states have call successors, (14) [2023-12-02 14:55:05,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 939 states to 939 states and 1064 transitions. [2023-12-02 14:55:05,922 INFO L78 Accepts]: Start accepts. Automaton has 939 states and 1064 transitions. Word has length 112 [2023-12-02 14:55:05,923 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 14:55:05,923 INFO L495 AbstractCegarLoop]: Abstraction has 939 states and 1064 transitions. [2023-12-02 14:55:05,923 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 22 states have (on average 6.545454545454546) internal successors, (144), 26 states have internal predecessors, (144), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-12-02 14:55:05,923 INFO L276 IsEmpty]: Start isEmpty. Operand 939 states and 1064 transitions. [2023-12-02 14:55:05,924 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2023-12-02 14:55:05,925 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 14:55:05,925 INFO L195 NwaCegarLoop]: trace histogram [44, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 14:55:05,939 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a20cfce-99f6-4121-ba6d-6a0c58cac3fc/bin/utaipan-verify-nQ1chXbOIh/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 (37)] Ended with exit code 0 [2023-12-02 14:55:06,146 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a20cfce-99f6-4121-ba6d-6a0c58cac3fc/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Ended with exit code 0 [2023-12-02 14:55:06,357 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a20cfce-99f6-4121-ba6d-6a0c58cac3fc/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (38)] Ended with exit code 0 [2023-12-02 14:55:06,525 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 37 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a20cfce-99f6-4121-ba6d-6a0c58cac3fc/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,39 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a20cfce-99f6-4121-ba6d-6a0c58cac3fc/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,38 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a20cfce-99f6-4121-ba6d-6a0c58cac3fc/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt [2023-12-02 14:55:06,526 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr89REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 532 more)] === [2023-12-02 14:55:06,526 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 14:55:06,526 INFO L85 PathProgramCache]: Analyzing trace with hash -1041315263, now seen corresponding path program 1 times [2023-12-02 14:55:06,527 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 14:55:06,527 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [868409810] [2023-12-02 14:55:06,527 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 14:55:06,527 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 [2023-12-02 14:55:06,527 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a20cfce-99f6-4121-ba6d-6a0c58cac3fc/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 14:55:06,528 INFO L229 MonitoredProcess]: Starting monitored process 40 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a20cfce-99f6-4121-ba6d-6a0c58cac3fc/bin/utaipan-verify-nQ1chXbOIh/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) [2023-12-02 14:55:06,529 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a20cfce-99f6-4121-ba6d-6a0c58cac3fc/bin/utaipan-verify-nQ1chXbOIh/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 (40)] Waiting until timeout for monitored process [2023-12-02 14:55:07,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 14:55:07,705 INFO L262 TraceCheckSpWp]: Trace formula consists of 857 conjuncts, 116 conjunts are in the unsatisfiable core [2023-12-02 14:55:07,717 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 14:55:07,721 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2023-12-02 14:55:08,074 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-12-02 14:55:08,090 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2023-12-02 14:55:08,090 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2023-12-02 14:55:08,130 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 15 treesize of output 1 [2023-12-02 14:55:08,145 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-12-02 14:55:08,281 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 18 treesize of output 10 [2023-12-02 14:55:08,287 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 7 treesize of output 3 [2023-12-02 14:55:09,142 INFO L349 Elim1Store]: treesize reduction 19, result has 20.8 percent of original size [2023-12-02 14:55:09,143 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 50 treesize of output 45 [2023-12-02 14:55:09,149 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 0 case distinctions, treesize of input 24 treesize of output 11 [2023-12-02 14:55:09,285 INFO L349 Elim1Store]: treesize reduction 19, result has 20.8 percent of original size [2023-12-02 14:55:09,286 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 50 treesize of output 45 [2023-12-02 14:55:09,298 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 0 case distinctions, treesize of input 24 treesize of output 11 [2023-12-02 14:55:09,403 INFO L349 Elim1Store]: treesize reduction 19, result has 20.8 percent of original size [2023-12-02 14:55:09,403 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 50 treesize of output 45 [2023-12-02 14:55:09,409 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 0 case distinctions, treesize of input 24 treesize of output 11 [2023-12-02 14:55:09,444 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 25 treesize of output 13 [2023-12-02 14:55:09,450 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 7 treesize of output 3 [2023-12-02 14:55:09,487 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 946 trivial. 0 not checked. [2023-12-02 14:55:09,487 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 14:55:09,684 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse0 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (and (forall ((v_ArrVal_7955 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7954 (Array (_ BitVec 32) (_ BitVec 32)))) (bvule (bvadd (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_#t~mem41#1.base| v_ArrVal_7955) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0) (_ bv12 32)) (select |c_#length| (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem41#1.base| v_ArrVal_7954) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0)))) (forall ((v_ArrVal_7955 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse1 (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_#t~mem41#1.base| v_ArrVal_7955) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0))) (bvule (bvadd (_ bv8 32) .cse1) (bvadd .cse1 (_ bv12 32))))))) is different from false [2023-12-02 14:55:09,725 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse2 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (let ((.cse1 (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (and (forall ((v_ArrVal_7955 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (select (store |c_#memory_$Pointer$.offset| .cse1 v_ArrVal_7955) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (bvule (bvadd (_ bv8 32) .cse0) (bvadd .cse0 (_ bv12 32))))) (forall ((v_ArrVal_7955 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7954 (Array (_ BitVec 32) (_ BitVec 32)))) (bvule (bvadd (select (select (store |c_#memory_$Pointer$.offset| .cse1 v_ArrVal_7955) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2) (_ bv12 32)) (select |c_#length| (select (select (store |c_#memory_$Pointer$.base| .cse1 v_ArrVal_7954) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))))))) is different from false [2023-12-02 14:55:09,775 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (and (forall ((v_ArrVal_7955 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7954 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7953 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7952 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse2 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem40#1.base| v_ArrVal_7952))) (let ((.cse0 (select (select .cse2 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (bvule (bvadd (select (select (store (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_#t~mem40#1.base| v_ArrVal_7953) .cse0 v_ArrVal_7955) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) (_ bv12 32)) (select |c_#length| (select (select (store .cse2 .cse0 v_ArrVal_7954) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))))) (forall ((v_ArrVal_7955 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7953 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7952 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse3 (select (select (store (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_#t~mem40#1.base| v_ArrVal_7953) (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem40#1.base| v_ArrVal_7952) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_7955) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (bvule (bvadd .cse3 (_ bv8 32)) (bvadd .cse3 (_ bv12 32))))))) is different from false [2023-12-02 14:55:11,802 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse2 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (and (forall ((v_ArrVal_7955 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7954 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7953 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7952 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8047 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8046 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse4 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem38#1.base| v_ArrVal_8047))) (let ((.cse0 (select (select .cse4 |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (let ((.cse3 (store .cse4 .cse0 v_ArrVal_7952))) (let ((.cse1 (select (select .cse3 |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (bvule (bvadd (select (select (store (store (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_#t~mem38#1.base| v_ArrVal_8046) .cse0 v_ArrVal_7953) .cse1 v_ArrVal_7955) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2) (_ bv12 32)) (select |c_#length| (select (select (store .cse3 .cse1 v_ArrVal_7954) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2)))))))) (forall ((v_ArrVal_7955 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7953 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7952 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8047 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8046 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse5 (select (select (let ((.cse7 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem38#1.base| v_ArrVal_8047))) (let ((.cse6 (select (select .cse7 |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (store (store (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_#t~mem38#1.base| v_ArrVal_8046) .cse6 v_ArrVal_7953) (select (select (store .cse7 .cse6 v_ArrVal_7952) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2) v_ArrVal_7955))) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (bvule (bvadd .cse5 (_ bv8 32)) (bvadd .cse5 (_ bv12 32))))))) is different from false [2023-12-02 14:55:11,815 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 14:55:11,815 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [868409810] [2023-12-02 14:55:11,815 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [868409810] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 14:55:11,816 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1011879904] [2023-12-02 14:55:11,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 14:55:11,816 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-02 14:55:11,816 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a20cfce-99f6-4121-ba6d-6a0c58cac3fc/bin/utaipan-verify-nQ1chXbOIh/cvc4 [2023-12-02 14:55:11,817 INFO L229 MonitoredProcess]: Starting monitored process 41 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a20cfce-99f6-4121-ba6d-6a0c58cac3fc/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-02 14:55:11,818 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a20cfce-99f6-4121-ba6d-6a0c58cac3fc/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (41)] Waiting until timeout for monitored process [2023-12-02 15:00:11,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 15:00:12,212 INFO L262 TraceCheckSpWp]: Trace formula consists of 857 conjuncts, 116 conjunts are in the unsatisfiable core [2023-12-02 15:00:12,223 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 15:00:12,226 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2023-12-02 15:00:12,461 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2023-12-02 15:00:12,461 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2023-12-02 15:00:12,468 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 5 [2023-12-02 15:00:12,480 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-12-02 15:00:12,492 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 15 treesize of output 1 [2023-12-02 15:00:12,544 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 18 treesize of output 10 [2023-12-02 15:00:12,547 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 7 treesize of output 3 [2023-12-02 15:00:13,137 INFO L349 Elim1Store]: treesize reduction 19, result has 20.8 percent of original size [2023-12-02 15:00:13,138 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 50 treesize of output 45 [2023-12-02 15:00:13,143 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 0 case distinctions, treesize of input 24 treesize of output 11 [2023-12-02 15:00:13,230 INFO L349 Elim1Store]: treesize reduction 19, result has 20.8 percent of original size [2023-12-02 15:00:13,230 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 50 treesize of output 45 [2023-12-02 15:00:13,240 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 0 case distinctions, treesize of input 24 treesize of output 11 [2023-12-02 15:00:13,283 INFO L349 Elim1Store]: treesize reduction 19, result has 20.8 percent of original size [2023-12-02 15:00:13,283 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 50 treesize of output 45 [2023-12-02 15:00:13,293 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 0 case distinctions, treesize of input 24 treesize of output 11 [2023-12-02 15:00:13,303 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 25 treesize of output 13 [2023-12-02 15:00:13,307 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 7 treesize of output 3 [2023-12-02 15:00:13,311 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 946 trivial. 0 not checked. [2023-12-02 15:00:13,312 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 15:00:13,364 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (and (forall ((v_ArrVal_8534 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_#t~mem41#1.base| v_ArrVal_8534) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (bvule (bvadd .cse0 (_ bv8 32)) (bvadd .cse0 (_ bv12 32))))) (forall ((v_ArrVal_8534 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8533 (Array (_ BitVec 32) (_ BitVec 32)))) (bvule (bvadd (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_#t~mem41#1.base| v_ArrVal_8534) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) (_ bv12 32)) (select |c_#length| (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem41#1.base| v_ArrVal_8533) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))))) is different from false [2023-12-02 15:00:13,396 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (let ((.cse0 (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (and (forall ((v_ArrVal_8534 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8533 (Array (_ BitVec 32) (_ BitVec 32)))) (bvule (bvadd (select (select (store |c_#memory_$Pointer$.offset| .cse0 v_ArrVal_8534) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) (_ bv12 32)) (select |c_#length| (select (select (store |c_#memory_$Pointer$.base| .cse0 v_ArrVal_8533) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))) (forall ((v_ArrVal_8534 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse2 (select (select (store |c_#memory_$Pointer$.offset| .cse0 v_ArrVal_8534) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (bvule (bvadd .cse2 (_ bv8 32)) (bvadd .cse2 (_ bv12 32)))))))) is different from false [2023-12-02 15:00:13,433 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (and (forall ((v_ArrVal_8534 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8533 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8532 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8531 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse2 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem40#1.base| v_ArrVal_8532))) (let ((.cse0 (select (select .cse2 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (bvule (bvadd (select (select (store (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_#t~mem40#1.base| v_ArrVal_8531) .cse0 v_ArrVal_8534) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) (_ bv12 32)) (select |c_#length| (select (select (store .cse2 .cse0 v_ArrVal_8533) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))))) (forall ((v_ArrVal_8534 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8532 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8531 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse3 (select (select (store (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_#t~mem40#1.base| v_ArrVal_8531) (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem40#1.base| v_ArrVal_8532) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_8534) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (bvule (bvadd (_ bv8 32) .cse3) (bvadd .cse3 (_ bv12 32))))))) is different from false [2023-12-02 15:00:13,478 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse2 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (let ((.cse0 (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (and (forall ((v_ArrVal_8534 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8533 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8532 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8531 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse3 (store |c_#memory_$Pointer$.base| .cse0 v_ArrVal_8532))) (let ((.cse1 (select (select .cse3 |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (bvule (bvadd (select (select (store (store |c_#memory_$Pointer$.offset| .cse0 v_ArrVal_8531) .cse1 v_ArrVal_8534) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2) (_ bv12 32)) (select |c_#length| (select (select (store .cse3 .cse1 v_ArrVal_8533) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2)))))) (forall ((v_ArrVal_8534 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8532 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8531 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse4 (select (select (store (store |c_#memory_$Pointer$.offset| .cse0 v_ArrVal_8531) (select (select (store |c_#memory_$Pointer$.base| .cse0 v_ArrVal_8532) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2) v_ArrVal_8534) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (bvule (bvadd (_ bv8 32) .cse4) (bvadd .cse4 (_ bv12 32)))))))) is different from false [2023-12-02 15:00:15,429 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse3 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (and (forall ((v_ArrVal_8626 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8625 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8534 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8532 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8531 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (select (let ((.cse2 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem38#1.base| v_ArrVal_8625))) (let ((.cse1 (select (select .cse2 |c_ULTIMATE.start_main_~user~0#1.base|) .cse3))) (store (store (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_#t~mem38#1.base| v_ArrVal_8626) .cse1 v_ArrVal_8531) (select (select (store .cse2 .cse1 v_ArrVal_8532) |c_ULTIMATE.start_main_~user~0#1.base|) .cse3) v_ArrVal_8534))) |c_ULTIMATE.start_main_~user~0#1.base|) .cse3))) (bvule (bvadd (_ bv8 32) .cse0) (bvadd (_ bv12 32) .cse0)))) (forall ((v_ArrVal_8626 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8625 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8534 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8533 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8532 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8531 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse7 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem38#1.base| v_ArrVal_8625))) (let ((.cse4 (select (select .cse7 |c_ULTIMATE.start_main_~user~0#1.base|) .cse3))) (let ((.cse6 (store .cse7 .cse4 v_ArrVal_8532))) (let ((.cse5 (select (select .cse6 |c_ULTIMATE.start_main_~user~0#1.base|) .cse3))) (bvule (bvadd (_ bv12 32) (select (select (store (store (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_#t~mem38#1.base| v_ArrVal_8626) .cse4 v_ArrVal_8531) .cse5 v_ArrVal_8534) |c_ULTIMATE.start_main_~user~0#1.base|) .cse3)) (select |c_#length| (select (select (store .cse6 .cse5 v_ArrVal_8533) |c_ULTIMATE.start_main_~user~0#1.base|) .cse3)))))))))) is different from false [2023-12-02 15:00:15,444 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1011879904] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 15:00:15,444 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [708843796] [2023-12-02 15:00:15,445 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:00:15,445 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 15:00:15,445 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a20cfce-99f6-4121-ba6d-6a0c58cac3fc/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 15:00:15,446 INFO L229 MonitoredProcess]: Starting monitored process 42 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a20cfce-99f6-4121-ba6d-6a0c58cac3fc/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 15:00:15,446 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a20cfce-99f6-4121-ba6d-6a0c58cac3fc/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Waiting until timeout for monitored process [2023-12-02 15:00:16,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 15:00:16,150 INFO L262 TraceCheckSpWp]: Trace formula consists of 857 conjuncts, 113 conjunts are in the unsatisfiable core [2023-12-02 15:00:16,158 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 15:00:16,394 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-12-02 15:00:16,416 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2023-12-02 15:00:16,417 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2023-12-02 15:00:16,520 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2023-12-02 15:00:16,532 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 19 treesize of output 1 [2023-12-02 15:00:16,757 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 22 treesize of output 10 [2023-12-02 15:00:16,763 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 9 treesize of output 3 [2023-12-02 15:00:17,730 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2023-12-02 15:00:17,731 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 62 treesize of output 57 [2023-12-02 15:00:17,749 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 0 case distinctions, treesize of input 30 treesize of output 13 [2023-12-02 15:00:18,001 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2023-12-02 15:00:18,001 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 62 treesize of output 57 [2023-12-02 15:00:18,019 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 0 case distinctions, treesize of input 30 treesize of output 13 [2023-12-02 15:00:18,170 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2023-12-02 15:00:18,170 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 62 treesize of output 57 [2023-12-02 15:00:18,188 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 0 case distinctions, treesize of input 30 treesize of output 13 [2023-12-02 15:00:18,207 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 31 treesize of output 13 [2023-12-02 15:00:18,216 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 9 treesize of output 3 [2023-12-02 15:00:18,218 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 946 trivial. 0 not checked. [2023-12-02 15:00:18,218 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 15:00:18,280 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse0 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (and (forall ((v_ArrVal_9112 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_9111 (Array (_ BitVec 32) (_ BitVec 32)))) (bvule (bvadd (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_#t~mem41#1.base| v_ArrVal_9111) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0) (_ bv12 32)) (select |c_#length| (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem41#1.base| v_ArrVal_9112) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0)))) (forall ((v_ArrVal_9111 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse1 (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_#t~mem41#1.base| v_ArrVal_9111) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0))) (bvule (bvadd (_ bv8 32) .cse1) (bvadd .cse1 (_ bv12 32))))))) is different from false [2023-12-02 15:00:18,317 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse2 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (let ((.cse1 (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (and (forall ((v_ArrVal_9111 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (select (store |c_#memory_$Pointer$.offset| .cse1 v_ArrVal_9111) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (bvule (bvadd (_ bv8 32) .cse0) (bvadd .cse0 (_ bv12 32))))) (forall ((v_ArrVal_9112 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_9111 (Array (_ BitVec 32) (_ BitVec 32)))) (bvule (bvadd (select (select (store |c_#memory_$Pointer$.offset| .cse1 v_ArrVal_9111) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2) (_ bv12 32)) (select |c_#length| (select (select (store |c_#memory_$Pointer$.base| .cse1 v_ArrVal_9112) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))))))) is different from false [2023-12-02 15:00:18,421 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (and (forall ((v_ArrVal_9111 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_9110 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_9109 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (select (store (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_#t~mem40#1.base| v_ArrVal_9110) (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem40#1.base| v_ArrVal_9109) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_9111) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (bvule (bvadd (_ bv8 32) .cse0) (bvadd .cse0 (_ bv12 32))))) (forall ((v_ArrVal_9112 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_9111 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_9110 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_9109 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse3 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem40#1.base| v_ArrVal_9109))) (let ((.cse2 (select (select .cse3 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (bvule (bvadd (select (select (store (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_#t~mem40#1.base| v_ArrVal_9110) .cse2 v_ArrVal_9111) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) (_ bv12 32)) (select |c_#length| (select (select (store .cse3 .cse2 v_ArrVal_9112) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))))))) is different from false [2023-12-02 15:00:18,475 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse2 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (let ((.cse0 (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (and (forall ((v_ArrVal_9112 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_9111 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_9110 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_9109 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse3 (store |c_#memory_$Pointer$.base| .cse0 v_ArrVal_9109))) (let ((.cse1 (select (select .cse3 |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (bvule (bvadd (select (select (store (store |c_#memory_$Pointer$.offset| .cse0 v_ArrVal_9110) .cse1 v_ArrVal_9111) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2) (_ bv12 32)) (select |c_#length| (select (select (store .cse3 .cse1 v_ArrVal_9112) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2)))))) (forall ((v_ArrVal_9111 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_9110 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_9109 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse4 (select (select (store (store |c_#memory_$Pointer$.offset| .cse0 v_ArrVal_9110) (select (select (store |c_#memory_$Pointer$.base| .cse0 v_ArrVal_9109) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2) v_ArrVal_9111) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (bvule (bvadd .cse4 (_ bv8 32)) (bvadd .cse4 (_ bv12 32)))))))) is different from false [2023-12-02 15:00:21,339 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse3 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (and (forall ((v_ArrVal_9111 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_9110 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_9109 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_9204 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_9203 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (select (let ((.cse2 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem38#1.base| v_ArrVal_9204))) (let ((.cse1 (select (select .cse2 |c_ULTIMATE.start_main_~user~0#1.base|) .cse3))) (store (store (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_#t~mem38#1.base| v_ArrVal_9203) .cse1 v_ArrVal_9110) (select (select (store .cse2 .cse1 v_ArrVal_9109) |c_ULTIMATE.start_main_~user~0#1.base|) .cse3) v_ArrVal_9111))) |c_ULTIMATE.start_main_~user~0#1.base|) .cse3))) (bvule (bvadd .cse0 (_ bv8 32)) (bvadd .cse0 (_ bv12 32))))) (forall ((v_ArrVal_9112 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_9111 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_9110 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_9109 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_9204 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_9203 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse7 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem38#1.base| v_ArrVal_9204))) (let ((.cse4 (select (select .cse7 |c_ULTIMATE.start_main_~user~0#1.base|) .cse3))) (let ((.cse6 (store .cse7 .cse4 v_ArrVal_9109))) (let ((.cse5 (select (select .cse6 |c_ULTIMATE.start_main_~user~0#1.base|) .cse3))) (bvule (bvadd (select (select (store (store (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_#t~mem38#1.base| v_ArrVal_9203) .cse4 v_ArrVal_9110) .cse5 v_ArrVal_9111) |c_ULTIMATE.start_main_~user~0#1.base|) .cse3) (_ bv12 32)) (select |c_#length| (select (select (store .cse6 .cse5 v_ArrVal_9112) |c_ULTIMATE.start_main_~user~0#1.base|) .cse3)))))))))) is different from false [2023-12-02 15:00:21,355 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [708843796] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 15:00:21,356 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-02 15:00:21,356 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 16 [2023-12-02 15:00:21,356 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [746455813] [2023-12-02 15:00:21,356 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-02 15:00:21,357 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-12-02 15:00:21,357 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 15:00:21,357 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-12-02 15:00:21,358 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=98, Invalid=315, Unknown=23, NotChecked=686, Total=1122 [2023-12-02 15:00:21,358 INFO L87 Difference]: Start difference. First operand 939 states and 1064 transitions. Second operand has 17 states, 14 states have (on average 9.142857142857142) internal successors, (128), 17 states have internal predecessors, (128), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-12-02 15:00:38,207 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 15:00:38,207 INFO L93 Difference]: Finished difference Result 1166 states and 1371 transitions. [2023-12-02 15:00:38,208 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-12-02 15:00:38,208 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 14 states have (on average 9.142857142857142) internal successors, (128), 17 states have internal predecessors, (128), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 112 [2023-12-02 15:00:38,208 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 15:00:38,213 INFO L225 Difference]: With dead ends: 1166 [2023-12-02 15:00:38,213 INFO L226 Difference]: Without dead ends: 1166 [2023-12-02 15:00:38,214 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 363 GetRequests, 320 SyntacticMatches, 5 SemanticMatches, 38 ConstructedPredicates, 14 IntricatePredicates, 0 DeprecatedPredicates, 135 ImplicationChecksByTransitivity, 4.6s TimeCoverageRelationStatistics Valid=156, Invalid=523, Unknown=27, NotChecked=854, Total=1560 [2023-12-02 15:00:38,215 INFO L413 NwaCegarLoop]: 478 mSDtfsCounter, 976 mSDsluCounter, 2375 mSDsCounter, 0 mSdLazyCounter, 4785 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 14.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 983 SdHoareTripleChecker+Valid, 2853 SdHoareTripleChecker+Invalid, 4804 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 4785 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 16.2s IncrementalHoareTripleChecker+Time [2023-12-02 15:00:38,215 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [983 Valid, 2853 Invalid, 4804 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [19 Valid, 4785 Invalid, 0 Unknown, 0 Unchecked, 16.2s Time] [2023-12-02 15:00:38,217 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1166 states. [2023-12-02 15:00:38,229 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1166 to 938. [2023-12-02 15:00:38,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 938 states, 585 states have (on average 1.7675213675213675) internal successors, (1034), 930 states have internal predecessors, (1034), 15 states have call successors, (15), 4 states have call predecessors, (15), 4 states have return successors, (14), 5 states have call predecessors, (14), 13 states have call successors, (14) [2023-12-02 15:00:38,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 938 states to 938 states and 1063 transitions. [2023-12-02 15:00:38,234 INFO L78 Accepts]: Start accepts. Automaton has 938 states and 1063 transitions. Word has length 112 [2023-12-02 15:00:38,234 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 15:00:38,234 INFO L495 AbstractCegarLoop]: Abstraction has 938 states and 1063 transitions. [2023-12-02 15:00:38,234 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 14 states have (on average 9.142857142857142) internal successors, (128), 17 states have internal predecessors, (128), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-12-02 15:00:38,234 INFO L276 IsEmpty]: Start isEmpty. Operand 938 states and 1063 transitions. [2023-12-02 15:00:38,236 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2023-12-02 15:00:38,236 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 15:00:38,236 INFO L195 NwaCegarLoop]: trace histogram [44, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 15:00:38,304 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a20cfce-99f6-4121-ba6d-6a0c58cac3fc/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (41)] Ended with exit code 0 [2023-12-02 15:00:38,445 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a20cfce-99f6-4121-ba6d-6a0c58cac3fc/bin/utaipan-verify-nQ1chXbOIh/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 (40)] Ended with exit code 0 [2023-12-02 15:00:38,650 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a20cfce-99f6-4121-ba6d-6a0c58cac3fc/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Forceful destruction successful, exit code 0 [2023-12-02 15:00:38,837 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 41 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a20cfce-99f6-4121-ba6d-6a0c58cac3fc/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt,40 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a20cfce-99f6-4121-ba6d-6a0c58cac3fc/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,42 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a20cfce-99f6-4121-ba6d-6a0c58cac3fc/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 15:00:38,837 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr93REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 532 more)] === [2023-12-02 15:00:38,837 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 15:00:38,837 INFO L85 PathProgramCache]: Analyzing trace with hash 24797564, now seen corresponding path program 1 times [2023-12-02 15:00:38,838 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 15:00:38,838 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1578555638] [2023-12-02 15:00:38,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:00:38,838 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 [2023-12-02 15:00:38,838 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a20cfce-99f6-4121-ba6d-6a0c58cac3fc/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 15:00:38,839 INFO L229 MonitoredProcess]: Starting monitored process 43 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a20cfce-99f6-4121-ba6d-6a0c58cac3fc/bin/utaipan-verify-nQ1chXbOIh/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) [2023-12-02 15:00:38,840 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a20cfce-99f6-4121-ba6d-6a0c58cac3fc/bin/utaipan-verify-nQ1chXbOIh/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 (43)] Waiting until timeout for monitored process [2023-12-02 15:00:39,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 15:00:40,021 INFO L262 TraceCheckSpWp]: Trace formula consists of 885 conjuncts, 117 conjunts are in the unsatisfiable core [2023-12-02 15:00:40,031 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 15:00:40,037 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2023-12-02 15:00:40,286 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-12-02 15:00:40,312 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2023-12-02 15:00:40,312 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2023-12-02 15:00:40,369 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2023-12-02 15:00:40,383 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 19 treesize of output 1 [2023-12-02 15:00:40,546 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 22 treesize of output 10 [2023-12-02 15:00:40,553 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 9 treesize of output 3 [2023-12-02 15:00:41,775 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2023-12-02 15:00:41,775 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 62 treesize of output 57 [2023-12-02 15:00:41,790 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 0 case distinctions, treesize of input 30 treesize of output 13 [2023-12-02 15:00:41,982 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2023-12-02 15:00:41,983 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 62 treesize of output 57 [2023-12-02 15:00:42,007 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 0 case distinctions, treesize of input 30 treesize of output 13 [2023-12-02 15:00:42,154 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2023-12-02 15:00:42,154 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 62 treesize of output 57 [2023-12-02 15:00:42,174 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 0 case distinctions, treesize of input 30 treesize of output 13 [2023-12-02 15:00:42,325 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2023-12-02 15:00:42,325 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 62 treesize of output 57 [2023-12-02 15:00:42,340 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 0 case distinctions, treesize of input 30 treesize of output 13 [2023-12-02 15:00:42,366 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 31 treesize of output 13 [2023-12-02 15:00:42,378 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 9 treesize of output 3 [2023-12-02 15:00:42,438 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 946 trivial. 0 not checked. [2023-12-02 15:00:42,438 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 15:00:42,680 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (and (forall ((v_ArrVal_9708 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_#t~mem42#1.base| v_ArrVal_9708) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (bvule (bvadd .cse0 (_ bv20 32)) (bvadd .cse0 (_ bv24 32))))) (forall ((v_ArrVal_9708 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_9707 (Array (_ BitVec 32) (_ BitVec 32)))) (bvule (bvadd (select (select (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_#t~mem42#1.base| v_ArrVal_9708) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) (_ bv24 32)) (select |c_#length| (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem42#1.base| v_ArrVal_9707) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))))) is different from false [2023-12-02 15:00:42,725 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse2 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (let ((.cse1 (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (and (forall ((v_ArrVal_9708 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (select (store |c_#memory_$Pointer$.offset| .cse1 v_ArrVal_9708) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (bvule (bvadd .cse0 (_ bv20 32)) (bvadd .cse0 (_ bv24 32))))) (forall ((v_ArrVal_9708 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_9707 (Array (_ BitVec 32) (_ BitVec 32)))) (bvule (bvadd (select (select (store |c_#memory_$Pointer$.offset| .cse1 v_ArrVal_9708) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2) (_ bv24 32)) (select |c_#length| (select (select (store |c_#memory_$Pointer$.base| .cse1 v_ArrVal_9707) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))))))) is different from false [2023-12-02 15:00:42,781 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (and (forall ((v_ArrVal_9708 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_9706 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_9705 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (select (store (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_#t~mem41#1.base| v_ArrVal_9706) (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem41#1.base| v_ArrVal_9705) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_9708) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (bvule (bvadd .cse0 (_ bv20 32)) (bvadd .cse0 (_ bv24 32))))) (forall ((v_ArrVal_9708 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_9707 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_9706 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_9705 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse3 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem41#1.base| v_ArrVal_9705))) (let ((.cse2 (select (select .cse3 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (bvule (bvadd (select (select (store (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_#t~mem41#1.base| v_ArrVal_9706) .cse2 v_ArrVal_9708) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) (_ bv24 32)) (select |c_#length| (select (select (store .cse3 .cse2 v_ArrVal_9707) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))))))) is different from false [2023-12-02 15:00:42,835 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse2 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (let ((.cse0 (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (and (forall ((v_ArrVal_9708 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_9707 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_9706 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_9705 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse3 (store |c_#memory_$Pointer$.base| .cse0 v_ArrVal_9705))) (let ((.cse1 (select (select .cse3 |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (bvule (bvadd (select (select (store (store |c_#memory_$Pointer$.offset| .cse0 v_ArrVal_9706) .cse1 v_ArrVal_9708) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2) (_ bv24 32)) (select |c_#length| (select (select (store .cse3 .cse1 v_ArrVal_9707) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2)))))) (forall ((v_ArrVal_9708 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_9706 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_9705 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse4 (select (select (store (store |c_#memory_$Pointer$.offset| .cse0 v_ArrVal_9706) (select (select (store |c_#memory_$Pointer$.base| .cse0 v_ArrVal_9705) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2) v_ArrVal_9708) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (bvule (bvadd .cse4 (_ bv20 32)) (bvadd .cse4 (_ bv24 32)))))))) is different from false [2023-12-02 15:00:42,904 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse2 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (and (forall ((v_ArrVal_9708 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_9707 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_9706 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_9705 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_9704 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_9703 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse4 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem40#1.base| v_ArrVal_9703))) (let ((.cse0 (select (select .cse4 |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (let ((.cse3 (store .cse4 .cse0 v_ArrVal_9705))) (let ((.cse1 (select (select .cse3 |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (bvule (bvadd (select (select (store (store (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_#t~mem40#1.base| v_ArrVal_9704) .cse0 v_ArrVal_9706) .cse1 v_ArrVal_9708) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2) (_ bv24 32)) (select |c_#length| (select (select (store .cse3 .cse1 v_ArrVal_9707) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2)))))))) (forall ((v_ArrVal_9708 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_9706 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_9705 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_9704 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_9703 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse5 (select (select (let ((.cse7 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem40#1.base| v_ArrVal_9703))) (let ((.cse6 (select (select .cse7 |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (store (store (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_#t~mem40#1.base| v_ArrVal_9704) .cse6 v_ArrVal_9706) (select (select (store .cse7 .cse6 v_ArrVal_9705) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2) v_ArrVal_9708))) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (bvule (bvadd .cse5 (_ bv20 32)) (bvadd .cse5 (_ bv24 32))))))) is different from false [2023-12-02 15:00:42,979 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse4 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (let ((.cse1 (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse4))) (and (forall ((v_ArrVal_9708 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_9706 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_9705 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_9704 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_9703 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (select (let ((.cse3 (store |c_#memory_$Pointer$.base| .cse1 v_ArrVal_9703))) (let ((.cse2 (select (select .cse3 |c_ULTIMATE.start_main_~user~0#1.base|) .cse4))) (store (store (store |c_#memory_$Pointer$.offset| .cse1 v_ArrVal_9704) .cse2 v_ArrVal_9706) (select (select (store .cse3 .cse2 v_ArrVal_9705) |c_ULTIMATE.start_main_~user~0#1.base|) .cse4) v_ArrVal_9708))) |c_ULTIMATE.start_main_~user~0#1.base|) .cse4))) (bvule (bvadd .cse0 (_ bv20 32)) (bvadd .cse0 (_ bv24 32))))) (forall ((v_ArrVal_9708 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_9707 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_9706 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_9705 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_9704 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_9703 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse8 (store |c_#memory_$Pointer$.base| .cse1 v_ArrVal_9703))) (let ((.cse5 (select (select .cse8 |c_ULTIMATE.start_main_~user~0#1.base|) .cse4))) (let ((.cse7 (store .cse8 .cse5 v_ArrVal_9705))) (let ((.cse6 (select (select .cse7 |c_ULTIMATE.start_main_~user~0#1.base|) .cse4))) (bvule (bvadd (select (select (store (store (store |c_#memory_$Pointer$.offset| .cse1 v_ArrVal_9704) .cse5 v_ArrVal_9706) .cse6 v_ArrVal_9708) |c_ULTIMATE.start_main_~user~0#1.base|) .cse4) (_ bv24 32)) (select |c_#length| (select (select (store .cse7 .cse6 v_ArrVal_9707) |c_ULTIMATE.start_main_~user~0#1.base|) .cse4))))))))))) is different from false [2023-12-02 15:00:44,614 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse4 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (and (forall ((v_ArrVal_9708 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_9706 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_9705 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_9704 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_9703 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_9800 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_9799 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (select (let ((.cse5 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem38#1.base| v_ArrVal_9799))) (let ((.cse1 (select (select .cse5 |c_ULTIMATE.start_main_~user~0#1.base|) .cse4))) (let ((.cse3 (store .cse5 .cse1 v_ArrVal_9703))) (let ((.cse2 (select (select .cse3 |c_ULTIMATE.start_main_~user~0#1.base|) .cse4))) (store (store (store (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_#t~mem38#1.base| v_ArrVal_9800) .cse1 v_ArrVal_9704) .cse2 v_ArrVal_9706) (select (select (store .cse3 .cse2 v_ArrVal_9705) |c_ULTIMATE.start_main_~user~0#1.base|) .cse4) v_ArrVal_9708))))) |c_ULTIMATE.start_main_~user~0#1.base|) .cse4))) (bvule (bvadd .cse0 (_ bv20 32)) (bvadd .cse0 (_ bv24 32))))) (forall ((v_ArrVal_9708 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_9707 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_9706 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_9705 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_9704 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_9703 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_9800 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_9799 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse11 (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_main_#t~mem38#1.base| v_ArrVal_9799))) (let ((.cse6 (select (select .cse11 |c_ULTIMATE.start_main_~user~0#1.base|) .cse4))) (let ((.cse10 (store .cse11 .cse6 v_ArrVal_9703))) (let ((.cse7 (select (select .cse10 |c_ULTIMATE.start_main_~user~0#1.base|) .cse4))) (let ((.cse9 (store .cse10 .cse7 v_ArrVal_9705))) (let ((.cse8 (select (select .cse9 |c_ULTIMATE.start_main_~user~0#1.base|) .cse4))) (bvule (bvadd (select (select (store (store (store (store |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_main_#t~mem38#1.base| v_ArrVal_9800) .cse6 v_ArrVal_9704) .cse7 v_ArrVal_9706) .cse8 v_ArrVal_9708) |c_ULTIMATE.start_main_~user~0#1.base|) .cse4) (_ bv24 32)) (select |c_#length| (select (select (store .cse9 .cse8 v_ArrVal_9707) |c_ULTIMATE.start_main_~user~0#1.base|) .cse4)))))))))))) is different from false [2023-12-02 15:00:44,638 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 15:00:44,638 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1578555638] [2023-12-02 15:00:44,638 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1578555638] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 15:00:44,638 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [505839965] [2023-12-02 15:00:44,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 15:00:44,638 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-02 15:00:44,638 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a20cfce-99f6-4121-ba6d-6a0c58cac3fc/bin/utaipan-verify-nQ1chXbOIh/cvc4 [2023-12-02 15:00:44,639 INFO L229 MonitoredProcess]: Starting monitored process 44 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a20cfce-99f6-4121-ba6d-6a0c58cac3fc/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-02 15:00:44,640 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0a20cfce-99f6-4121-ba6d-6a0c58cac3fc/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (44)] Waiting until timeout for monitored process