./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/uthash-2.0.2/uthash_JEN_nondet_test3-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version a0165632 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_7a7b4d5e-c5d7-404b-8918-c4de76df1de6/bin/uautomizer-verify-jihMAELWvX/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a7b4d5e-c5d7-404b-8918-c4de76df1de6/bin/uautomizer-verify-jihMAELWvX/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a7b4d5e-c5d7-404b-8918-c4de76df1de6/bin/uautomizer-verify-jihMAELWvX/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a7b4d5e-c5d7-404b-8918-c4de76df1de6/bin/uautomizer-verify-jihMAELWvX/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_JEN_nondet_test3-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a7b4d5e-c5d7-404b-8918-c4de76df1de6/bin/uautomizer-verify-jihMAELWvX/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a7b4d5e-c5d7-404b-8918-c4de76df1de6/bin/uautomizer-verify-jihMAELWvX --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 Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash be29e8161f6a6b8e8b181f151bf5388e6a9e3237ae426f572d4ceda403cee9b8 --- Real Ultimate output --- This is Ultimate 0.2.5-dev-a016563 [2024-11-08 17:56:27,505 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-08 17:56:27,613 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a7b4d5e-c5d7-404b-8918-c4de76df1de6/bin/uautomizer-verify-jihMAELWvX/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2024-11-08 17:56:27,621 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-08 17:56:27,622 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-08 17:56:27,647 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-08 17:56:27,648 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-08 17:56:27,648 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-08 17:56:27,649 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-08 17:56:27,649 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-08 17:56:27,650 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-08 17:56:27,651 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-08 17:56:27,652 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-08 17:56:27,654 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-08 17:56:27,654 INFO L153 SettingsManager]: * Use SBE=true [2024-11-08 17:56:27,655 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-08 17:56:27,655 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-08 17:56:27,656 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-08 17:56:27,656 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-08 17:56:27,656 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-08 17:56:27,660 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-11-08 17:56:27,661 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-11-08 17:56:27,661 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-11-08 17:56:27,662 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-08 17:56:27,662 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-08 17:56:27,662 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-08 17:56:27,663 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-08 17:56:27,663 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-08 17:56:27,663 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-08 17:56:27,663 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-08 17:56:27,664 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-08 17:56:27,664 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-08 17:56:27,664 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-08 17:56:27,666 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-08 17:56:27,666 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-08 17:56:27,667 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-08 17:56:27,667 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-08 17:56:27,668 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-08 17:56:27,668 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-08 17:56:27,668 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-08 17:56:27,669 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-08 17:56:27,669 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-08 17:56:27,669 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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_7a7b4d5e-c5d7-404b-8918-c4de76df1de6/bin/uautomizer-verify-jihMAELWvX/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a7b4d5e-c5d7-404b-8918-c4de76df1de6/bin/uautomizer-verify-jihMAELWvX Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> be29e8161f6a6b8e8b181f151bf5388e6a9e3237ae426f572d4ceda403cee9b8 [2024-11-08 17:56:27,996 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-08 17:56:28,030 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-08 17:56:28,033 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-08 17:56:28,035 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-08 17:56:28,036 INFO L274 PluginConnector]: CDTParser initialized [2024-11-08 17:56:28,037 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a7b4d5e-c5d7-404b-8918-c4de76df1de6/bin/uautomizer-verify-jihMAELWvX/../../sv-benchmarks/c/uthash-2.0.2/uthash_JEN_nondet_test3-2.i Unable to find full path for "g++" [2024-11-08 17:56:30,357 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-08 17:56:30,725 INFO L384 CDTParser]: Found 1 translation units. [2024-11-08 17:56:30,725 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a7b4d5e-c5d7-404b-8918-c4de76df1de6/sv-benchmarks/c/uthash-2.0.2/uthash_JEN_nondet_test3-2.i [2024-11-08 17:56:30,753 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a7b4d5e-c5d7-404b-8918-c4de76df1de6/bin/uautomizer-verify-jihMAELWvX/data/0bf8ada7c/2463640a5b254e60b365066bbdbf9818/FLAG95f6c1268 [2024-11-08 17:56:30,771 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a7b4d5e-c5d7-404b-8918-c4de76df1de6/bin/uautomizer-verify-jihMAELWvX/data/0bf8ada7c/2463640a5b254e60b365066bbdbf9818 [2024-11-08 17:56:30,774 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-08 17:56:30,776 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-08 17:56:30,778 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-08 17:56:30,778 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-08 17:56:30,786 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-08 17:56:30,786 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.11 05:56:30" (1/1) ... [2024-11-08 17:56:30,788 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7c009478 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:56:30, skipping insertion in model container [2024-11-08 17:56:30,788 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.11 05:56:30" (1/1) ... [2024-11-08 17:56:30,873 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-08 17:56:31,479 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-08 17:56:31,557 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-08 17:56:31,562 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-08 17:56:31,574 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-08 17:56:31,595 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-08 17:56:31,667 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-08 17:56:31,668 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-08 17:56:31,673 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-08 17:56:31,677 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-08 17:56:31,682 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-08 17:56:31,685 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-08 17:56:31,686 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-08 17:56:31,688 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-08 17:56:31,694 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-08 17:56:31,695 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-08 17:56:31,721 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-08 17:56:31,723 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-08 17:56:31,729 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-08 17:56:31,731 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-08 17:56:31,739 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-08 17:56:31,757 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-08 17:56:31,780 ERROR L321 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) [2024-11-08 17:56:31,781 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@3f5b66ad and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:56:31, skipping insertion in model container [2024-11-08 17:56:31,781 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-08 17:56:31,782 INFO L186 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2024-11-08 17:56:31,784 INFO L158 Benchmark]: Toolchain (without parser) took 1007.38ms. Allocated memory was 134.2MB in the beginning and 174.1MB in the end (delta: 39.8MB). Free memory was 91.6MB in the beginning and 142.3MB in the end (delta: -50.7MB). Peak memory consumption was 29.8MB. Max. memory is 16.1GB. [2024-11-08 17:56:31,785 INFO L158 Benchmark]: CDTParser took 0.36ms. Allocated memory is still 134.2MB. Free memory is still 76.1MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-08 17:56:31,786 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1004.21ms. Allocated memory was 134.2MB in the beginning and 174.1MB in the end (delta: 39.8MB). Free memory was 91.6MB in the beginning and 142.4MB in the end (delta: -50.8MB). Peak memory consumption was 29.8MB. Max. memory is 16.1GB. [2024-11-08 17:56:31,788 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.36ms. Allocated memory is still 134.2MB. Free memory is still 76.1MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 1004.21ms. Allocated memory was 134.2MB in the beginning and 174.1MB in the end (delta: 39.8MB). Free memory was 91.6MB in the beginning and 142.4MB in the end (delta: -50.8MB). Peak memory consumption was 29.8MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 750]: 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_7a7b4d5e-c5d7-404b-8918-c4de76df1de6/bin/uautomizer-verify-jihMAELWvX/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a7b4d5e-c5d7-404b-8918-c4de76df1de6/bin/uautomizer-verify-jihMAELWvX/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a7b4d5e-c5d7-404b-8918-c4de76df1de6/bin/uautomizer-verify-jihMAELWvX/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a7b4d5e-c5d7-404b-8918-c4de76df1de6/bin/uautomizer-verify-jihMAELWvX/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_JEN_nondet_test3-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a7b4d5e-c5d7-404b-8918-c4de76df1de6/bin/uautomizer-verify-jihMAELWvX/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a7b4d5e-c5d7-404b-8918-c4de76df1de6/bin/uautomizer-verify-jihMAELWvX --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 Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash be29e8161f6a6b8e8b181f151bf5388e6a9e3237ae426f572d4ceda403cee9b8 --- Real Ultimate output --- This is Ultimate 0.2.5-dev-a016563 [2024-11-08 17:56:34,656 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-08 17:56:34,789 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a7b4d5e-c5d7-404b-8918-c4de76df1de6/bin/uautomizer-verify-jihMAELWvX/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2024-11-08 17:56:34,799 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-08 17:56:34,799 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-08 17:56:34,844 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-08 17:56:34,845 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-08 17:56:34,846 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-08 17:56:34,847 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-08 17:56:34,849 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-08 17:56:34,850 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-08 17:56:34,850 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-08 17:56:34,851 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-08 17:56:34,852 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-08 17:56:34,852 INFO L153 SettingsManager]: * Use SBE=true [2024-11-08 17:56:34,853 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-08 17:56:34,853 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-08 17:56:34,854 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-08 17:56:34,854 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-08 17:56:34,855 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-08 17:56:34,855 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-11-08 17:56:34,863 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-11-08 17:56:34,863 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-11-08 17:56:34,864 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-08 17:56:34,864 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-08 17:56:34,865 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2024-11-08 17:56:34,865 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-08 17:56:34,865 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2024-11-08 17:56:34,866 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-08 17:56:34,866 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-08 17:56:34,866 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-08 17:56:34,867 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-08 17:56:34,867 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-08 17:56:34,867 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-08 17:56:34,867 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-08 17:56:34,868 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-08 17:56:34,868 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-08 17:56:34,868 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-08 17:56:34,869 INFO L153 SettingsManager]: * Trace refinement strategy=FOX [2024-11-08 17:56:34,869 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2024-11-08 17:56:34,869 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-08 17:56:34,871 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-08 17:56:34,871 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-08 17:56:34,872 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-08 17:56:34,872 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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_7a7b4d5e-c5d7-404b-8918-c4de76df1de6/bin/uautomizer-verify-jihMAELWvX/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a7b4d5e-c5d7-404b-8918-c4de76df1de6/bin/uautomizer-verify-jihMAELWvX Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> be29e8161f6a6b8e8b181f151bf5388e6a9e3237ae426f572d4ceda403cee9b8 [2024-11-08 17:56:35,346 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-08 17:56:35,382 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-08 17:56:35,385 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-08 17:56:35,387 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-08 17:56:35,388 INFO L274 PluginConnector]: CDTParser initialized [2024-11-08 17:56:35,390 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a7b4d5e-c5d7-404b-8918-c4de76df1de6/bin/uautomizer-verify-jihMAELWvX/../../sv-benchmarks/c/uthash-2.0.2/uthash_JEN_nondet_test3-2.i Unable to find full path for "g++" [2024-11-08 17:56:37,913 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-08 17:56:38,318 INFO L384 CDTParser]: Found 1 translation units. [2024-11-08 17:56:38,319 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a7b4d5e-c5d7-404b-8918-c4de76df1de6/sv-benchmarks/c/uthash-2.0.2/uthash_JEN_nondet_test3-2.i [2024-11-08 17:56:38,342 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a7b4d5e-c5d7-404b-8918-c4de76df1de6/bin/uautomizer-verify-jihMAELWvX/data/7574596b8/ad844b4d06c849c7a48d8f062518b7d2/FLAGdb3ef6a75 [2024-11-08 17:56:38,362 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a7b4d5e-c5d7-404b-8918-c4de76df1de6/bin/uautomizer-verify-jihMAELWvX/data/7574596b8/ad844b4d06c849c7a48d8f062518b7d2 [2024-11-08 17:56:38,364 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-08 17:56:38,366 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-08 17:56:38,367 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-08 17:56:38,367 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-08 17:56:38,373 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-08 17:56:38,374 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.11 05:56:38" (1/1) ... [2024-11-08 17:56:38,375 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7d8a9468 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:56:38, skipping insertion in model container [2024-11-08 17:56:38,375 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.11 05:56:38" (1/1) ... [2024-11-08 17:56:38,439 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-08 17:56:39,100 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-08 17:56:39,209 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-08 17:56:39,219 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-08 17:56:39,234 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-08 17:56:39,254 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-08 17:56:39,314 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-08 17:56:39,315 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-08 17:56:39,323 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-08 17:56:39,323 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-08 17:56:39,326 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-08 17:56:39,331 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-08 17:56:39,332 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-08 17:56:39,335 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-08 17:56:39,343 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-08 17:56:39,349 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-08 17:56:39,356 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-08 17:56:39,357 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-08 17:56:39,363 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-08 17:56:39,364 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-08 17:56:39,374 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-08 17:56:39,381 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-08 17:56:39,409 INFO L197 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2024-11-08 17:56:39,429 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-08 17:56:39,468 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-08 17:56:39,483 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-08 17:56:39,485 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-08 17:56:39,487 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-08 17:56:39,492 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-08 17:56:39,512 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-08 17:56:39,513 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-08 17:56:39,515 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-08 17:56:39,515 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-08 17:56:39,518 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-08 17:56:39,519 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-08 17:56:39,520 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-08 17:56:39,521 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-08 17:56:39,524 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-08 17:56:39,525 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-08 17:56:39,527 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-08 17:56:39,528 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-08 17:56:39,528 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-08 17:56:39,529 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-08 17:56:39,532 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-08 17:56:39,551 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-08 17:56:39,558 INFO L200 MainTranslator]: Completed pre-run [2024-11-08 17:56:39,648 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-08 17:56:39,710 INFO L204 MainTranslator]: Completed translation [2024-11-08 17:56:39,710 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:56:39 WrapperNode [2024-11-08 17:56:39,710 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-08 17:56:39,712 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-08 17:56:39,712 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-08 17:56:39,712 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-08 17:56:39,721 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:56:39" (1/1) ... [2024-11-08 17:56:39,767 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:56:39" (1/1) ... [2024-11-08 17:56:39,831 INFO L138 Inliner]: procedures = 180, calls = 325, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 1177 [2024-11-08 17:56:39,831 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-08 17:56:39,832 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-08 17:56:39,832 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-08 17:56:39,832 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-08 17:56:39,852 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:56:39" (1/1) ... [2024-11-08 17:56:39,853 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:56:39" (1/1) ... [2024-11-08 17:56:39,870 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:56:39" (1/1) ... [2024-11-08 17:56:40,005 INFO L175 MemorySlicer]: Split 302 memory accesses to 3 slices as follows [2, 34, 266]. 88 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0]. The 62 writes are split as follows [0, 4, 58]. [2024-11-08 17:56:40,005 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:56:39" (1/1) ... [2024-11-08 17:56:40,005 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:56:39" (1/1) ... [2024-11-08 17:56:40,046 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:56:39" (1/1) ... [2024-11-08 17:56:40,055 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:56:39" (1/1) ... [2024-11-08 17:56:40,059 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:56:39" (1/1) ... [2024-11-08 17:56:40,064 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:56:39" (1/1) ... [2024-11-08 17:56:40,076 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-08 17:56:40,077 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-08 17:56:40,077 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-08 17:56:40,078 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-08 17:56:40,078 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:56:39" (1/1) ... [2024-11-08 17:56:40,084 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-08 17:56:40,096 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a7b4d5e-c5d7-404b-8918-c4de76df1de6/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 17:56:40,111 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a7b4d5e-c5d7-404b-8918-c4de76df1de6/bin/uautomizer-verify-jihMAELWvX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-08 17:56:40,115 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a7b4d5e-c5d7-404b-8918-c4de76df1de6/bin/uautomizer-verify-jihMAELWvX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-08 17:56:40,144 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#0 [2024-11-08 17:56:40,144 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#1 [2024-11-08 17:56:40,144 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#2 [2024-11-08 17:56:40,144 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#0 [2024-11-08 17:56:40,144 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#1 [2024-11-08 17:56:40,144 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#2 [2024-11-08 17:56:40,145 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-11-08 17:56:40,146 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-11-08 17:56:40,146 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#0 [2024-11-08 17:56:40,146 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#1 [2024-11-08 17:56:40,146 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#2 [2024-11-08 17:56:40,146 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#0 [2024-11-08 17:56:40,146 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#1 [2024-11-08 17:56:40,146 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#2 [2024-11-08 17:56:40,146 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-08 17:56:40,147 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-08 17:56:40,147 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2024-11-08 17:56:40,147 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2024-11-08 17:56:40,147 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2024-11-08 17:56:40,147 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-08 17:56:40,147 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2024-11-08 17:56:40,147 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2024-11-08 17:56:40,147 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2024-11-08 17:56:40,148 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#0 [2024-11-08 17:56:40,148 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#1 [2024-11-08 17:56:40,148 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#2 [2024-11-08 17:56:40,148 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-08 17:56:40,148 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2024-11-08 17:56:40,148 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#1 [2024-11-08 17:56:40,148 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#2 [2024-11-08 17:56:40,153 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-08 17:56:40,153 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-08 17:56:40,579 INFO L238 CfgBuilder]: Building ICFG [2024-11-08 17:56:40,583 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-08 17:56:40,588 WARN L781 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2024-11-08 17:56:40,649 WARN L781 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2024-11-08 17:56:40,674 WARN L781 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2024-11-08 17:56:46,628 INFO L? ?]: Removed 1306 outVars from TransFormulas that were not future-live. [2024-11-08 17:56:46,629 INFO L287 CfgBuilder]: Performing block encoding [2024-11-08 17:56:46,690 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-08 17:56:46,690 INFO L316 CfgBuilder]: Removed 66 assume(true) statements. [2024-11-08 17:56:46,691 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.11 05:56:46 BoogieIcfgContainer [2024-11-08 17:56:46,691 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-08 17:56:46,695 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-08 17:56:46,696 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-08 17:56:46,699 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-08 17:56:46,699 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.11 05:56:38" (1/3) ... [2024-11-08 17:56:46,700 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@79c3965d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.11 05:56:46, skipping insertion in model container [2024-11-08 17:56:46,700 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 05:56:39" (2/3) ... [2024-11-08 17:56:46,702 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@79c3965d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.11 05:56:46, skipping insertion in model container [2024-11-08 17:56:46,702 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.11 05:56:46" (3/3) ... [2024-11-08 17:56:46,704 INFO L112 eAbstractionObserver]: Analyzing ICFG uthash_JEN_nondet_test3-2.i [2024-11-08 17:56:46,723 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-08 17:56:46,724 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 630 error locations. [2024-11-08 17:56:46,820 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-08 17:56:46,829 INFO L333 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, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=None, 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;@6c9fc0c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-08 17:56:46,829 INFO L334 AbstractCegarLoop]: Starting to check reachability of 630 error locations. [2024-11-08 17:56:46,840 INFO L276 IsEmpty]: Start isEmpty. Operand has 1265 states, 630 states have (on average 2.2253968253968255) internal successors, (1402), 1258 states have internal predecessors, (1402), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2024-11-08 17:56:46,853 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2024-11-08 17:56:46,854 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 17:56:46,854 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2024-11-08 17:56:46,855 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr628ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 627 more)] === [2024-11-08 17:56:46,862 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:56:46,862 INFO L85 PathProgramCache]: Analyzing trace with hash 1758676, now seen corresponding path program 1 times [2024-11-08 17:56:46,876 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-08 17:56:46,876 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1477295793] [2024-11-08 17:56:46,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:56:46,877 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:56:46,877 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a7b4d5e-c5d7-404b-8918-c4de76df1de6/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 17:56:46,880 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a7b4d5e-c5d7-404b-8918-c4de76df1de6/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 17:56:46,885 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a7b4d5e-c5d7-404b-8918-c4de76df1de6/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-08 17:56:47,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:56:47,099 INFO L255 TraceCheckSpWp]: Trace formula consists of 27 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-08 17:56:47,105 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 17:56:47,208 WARN L873 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_main_~#i~0#1.base_46| (_ BitVec 32))) (and (= (_ bv0 1) (select |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#i~0#1.base_46|)) (= (store |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#i~0#1.base_46| (_ bv0 1)) |c_#valid|))) is different from true [2024-11-08 17:56:47,209 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:56:47,210 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-08 17:56:47,210 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-08 17:56:47,211 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1477295793] [2024-11-08 17:56:47,212 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1477295793] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 17:56:47,212 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 17:56:47,212 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-08 17:56:47,214 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1419986325] [2024-11-08 17:56:47,215 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 17:56:47,220 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-08 17:56:47,220 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-08 17:56:47,253 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-08 17:56:47,254 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=4, Unknown=1, NotChecked=2, Total=12 [2024-11-08 17:56:47,262 INFO L87 Difference]: Start difference. First operand has 1265 states, 630 states have (on average 2.2253968253968255) internal successors, (1402), 1258 states have internal predecessors, (1402), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) Second operand has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 4 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:56:51,671 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 17:56:51,672 INFO L93 Difference]: Finished difference Result 1841 states and 1975 transitions. [2024-11-08 17:56:51,673 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-08 17:56:51,675 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 4 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4 [2024-11-08 17:56:51,676 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 17:56:51,716 INFO L225 Difference]: With dead ends: 1841 [2024-11-08 17:56:51,716 INFO L226 Difference]: Without dead ends: 1838 [2024-11-08 17:56:51,718 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=4, Unknown=1, NotChecked=2, Total=12 [2024-11-08 17:56:51,722 INFO L432 NwaCegarLoop]: 1051 mSDtfsCounter, 624 mSDsluCounter, 689 mSDsCounter, 0 mSdLazyCounter, 946 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 626 SdHoareTripleChecker+Valid, 1740 SdHoareTripleChecker+Invalid, 2922 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 946 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1976 IncrementalHoareTripleChecker+Unchecked, 4.2s IncrementalHoareTripleChecker+Time [2024-11-08 17:56:51,723 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [626 Valid, 1740 Invalid, 2922 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 946 Invalid, 0 Unknown, 1976 Unchecked, 4.2s Time] [2024-11-08 17:56:51,758 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1838 states. [2024-11-08 17:56:51,877 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1838 to 1253. [2024-11-08 17:56:51,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1253 states, 624 states have (on average 2.110576923076923) internal successors, (1317), 1246 states have internal predecessors, (1317), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2024-11-08 17:56:51,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1253 states to 1253 states and 1327 transitions. [2024-11-08 17:56:51,891 INFO L78 Accepts]: Start accepts. Automaton has 1253 states and 1327 transitions. Word has length 4 [2024-11-08 17:56:51,892 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 17:56:51,894 INFO L471 AbstractCegarLoop]: Abstraction has 1253 states and 1327 transitions. [2024-11-08 17:56:51,895 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 4 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:56:51,895 INFO L276 IsEmpty]: Start isEmpty. Operand 1253 states and 1327 transitions. [2024-11-08 17:56:51,895 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2024-11-08 17:56:51,895 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 17:56:51,896 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2024-11-08 17:56:51,921 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a7b4d5e-c5d7-404b-8918-c4de76df1de6/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-08 17:56:52,097 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a7b4d5e-c5d7-404b-8918-c4de76df1de6/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:56:52,098 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 627 more)] === [2024-11-08 17:56:52,099 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:56:52,099 INFO L85 PathProgramCache]: Analyzing trace with hash 1756837, now seen corresponding path program 1 times [2024-11-08 17:56:52,099 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-08 17:56:52,100 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [180723582] [2024-11-08 17:56:52,100 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:56:52,100 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:56:52,100 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a7b4d5e-c5d7-404b-8918-c4de76df1de6/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 17:56:52,103 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a7b4d5e-c5d7-404b-8918-c4de76df1de6/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 17:56:52,110 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a7b4d5e-c5d7-404b-8918-c4de76df1de6/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-08 17:56:52,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:56:52,318 INFO L255 TraceCheckSpWp]: Trace formula consists of 24 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-08 17:56:52,321 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 17:56:52,343 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 [2024-11-08 17:56:52,362 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:56:52,362 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-08 17:56:52,363 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-08 17:56:52,364 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [180723582] [2024-11-08 17:56:52,364 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [180723582] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 17:56:52,365 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 17:56:52,365 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-08 17:56:52,365 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1172355471] [2024-11-08 17:56:52,366 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 17:56:52,369 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 17:56:52,370 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-08 17:56:52,371 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 17:56:52,371 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 17:56:52,371 INFO L87 Difference]: Start difference. First operand 1253 states and 1327 transitions. Second operand has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:56:55,337 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 17:56:55,338 INFO L93 Difference]: Finished difference Result 1440 states and 1526 transitions. [2024-11-08 17:56:55,338 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-08 17:56:55,338 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4 [2024-11-08 17:56:55,338 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 17:56:55,344 INFO L225 Difference]: With dead ends: 1440 [2024-11-08 17:56:55,344 INFO L226 Difference]: Without dead ends: 1440 [2024-11-08 17:56:55,344 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 17:56:55,345 INFO L432 NwaCegarLoop]: 765 mSDtfsCounter, 1169 mSDsluCounter, 166 mSDsCounter, 0 mSdLazyCounter, 744 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1174 SdHoareTripleChecker+Valid, 931 SdHoareTripleChecker+Invalid, 761 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 744 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2024-11-08 17:56:55,346 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1174 Valid, 931 Invalid, 761 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 744 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2024-11-08 17:56:55,350 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1440 states. [2024-11-08 17:56:55,375 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1440 to 1252. [2024-11-08 17:56:55,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1252 states, 633 states have (on average 2.0821484992101107) internal successors, (1318), 1244 states have internal predecessors, (1318), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2024-11-08 17:56:55,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1252 states to 1252 states and 1328 transitions. [2024-11-08 17:56:55,384 INFO L78 Accepts]: Start accepts. Automaton has 1252 states and 1328 transitions. Word has length 4 [2024-11-08 17:56:55,384 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 17:56:55,384 INFO L471 AbstractCegarLoop]: Abstraction has 1252 states and 1328 transitions. [2024-11-08 17:56:55,384 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:56:55,385 INFO L276 IsEmpty]: Start isEmpty. Operand 1252 states and 1328 transitions. [2024-11-08 17:56:55,385 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2024-11-08 17:56:55,385 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 17:56:55,385 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2024-11-08 17:56:55,412 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a7b4d5e-c5d7-404b-8918-c4de76df1de6/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-08 17:56:55,590 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a7b4d5e-c5d7-404b-8918-c4de76df1de6/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:56:55,590 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 627 more)] === [2024-11-08 17:56:55,591 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:56:55,591 INFO L85 PathProgramCache]: Analyzing trace with hash 1756838, now seen corresponding path program 1 times [2024-11-08 17:56:55,591 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-08 17:56:55,592 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [738514643] [2024-11-08 17:56:55,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:56:55,592 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:56:55,592 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a7b4d5e-c5d7-404b-8918-c4de76df1de6/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 17:56:55,594 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a7b4d5e-c5d7-404b-8918-c4de76df1de6/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 17:56:55,597 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a7b4d5e-c5d7-404b-8918-c4de76df1de6/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-08 17:56:55,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:56:55,770 INFO L255 TraceCheckSpWp]: Trace formula consists of 24 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-08 17:56:55,774 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 17:56:55,791 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 [2024-11-08 17:56:55,828 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:56:55,828 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-08 17:56:55,829 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-08 17:56:55,829 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [738514643] [2024-11-08 17:56:55,829 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [738514643] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 17:56:55,829 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 17:56:55,829 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-08 17:56:55,829 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1671132095] [2024-11-08 17:56:55,830 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 17:56:55,830 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 17:56:55,830 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-08 17:56:55,835 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 17:56:55,835 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 17:56:55,835 INFO L87 Difference]: Start difference. First operand 1252 states and 1328 transitions. Second operand has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:57:00,574 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 17:57:00,574 INFO L93 Difference]: Finished difference Result 1861 states and 1986 transitions. [2024-11-08 17:57:00,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-08 17:57:00,575 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4 [2024-11-08 17:57:00,575 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 17:57:00,581 INFO L225 Difference]: With dead ends: 1861 [2024-11-08 17:57:00,582 INFO L226 Difference]: Without dead ends: 1861 [2024-11-08 17:57:00,582 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 17:57:00,583 INFO L432 NwaCegarLoop]: 1030 mSDtfsCounter, 652 mSDsluCounter, 703 mSDsCounter, 0 mSdLazyCounter, 896 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 654 SdHoareTripleChecker+Valid, 1733 SdHoareTripleChecker+Invalid, 902 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 896 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.6s IncrementalHoareTripleChecker+Time [2024-11-08 17:57:00,584 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [654 Valid, 1733 Invalid, 902 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 896 Invalid, 0 Unknown, 0 Unchecked, 4.6s Time] [2024-11-08 17:57:00,587 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1861 states. [2024-11-08 17:57:00,613 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1861 to 1464. [2024-11-08 17:57:00,616 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1464 states, 845 states have (on average 2.06508875739645) internal successors, (1745), 1455 states have internal predecessors, (1745), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-11-08 17:57:00,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1464 states to 1464 states and 1757 transitions. [2024-11-08 17:57:00,621 INFO L78 Accepts]: Start accepts. Automaton has 1464 states and 1757 transitions. Word has length 4 [2024-11-08 17:57:00,621 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 17:57:00,621 INFO L471 AbstractCegarLoop]: Abstraction has 1464 states and 1757 transitions. [2024-11-08 17:57:00,622 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:57:00,622 INFO L276 IsEmpty]: Start isEmpty. Operand 1464 states and 1757 transitions. [2024-11-08 17:57:00,622 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2024-11-08 17:57:00,622 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 17:57:00,623 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:57:00,643 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a7b4d5e-c5d7-404b-8918-c4de76df1de6/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-08 17:57:00,827 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a7b4d5e-c5d7-404b-8918-c4de76df1de6/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:57:00,827 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 627 more)] === [2024-11-08 17:57:00,828 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:57:00,828 INFO L85 PathProgramCache]: Analyzing trace with hash -1021429073, now seen corresponding path program 1 times [2024-11-08 17:57:00,828 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-08 17:57:00,829 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [7237202] [2024-11-08 17:57:00,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:57:00,829 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:57:00,829 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a7b4d5e-c5d7-404b-8918-c4de76df1de6/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 17:57:00,831 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a7b4d5e-c5d7-404b-8918-c4de76df1de6/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 17:57:00,832 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a7b4d5e-c5d7-404b-8918-c4de76df1de6/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-08 17:57:01,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:57:01,036 INFO L255 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-08 17:57:01,039 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 17:57:01,054 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 [2024-11-08 17:57:01,164 INFO L349 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2024-11-08 17:57:01,165 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 18 [2024-11-08 17:57:01,256 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:57:01,257 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-08 17:57:01,257 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-08 17:57:01,258 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [7237202] [2024-11-08 17:57:01,258 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [7237202] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 17:57:01,259 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 17:57:01,259 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-08 17:57:01,259 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [651221255] [2024-11-08 17:57:01,261 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 17:57:01,261 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-08 17:57:01,261 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-08 17:57:01,262 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-08 17:57:01,262 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-08 17:57:01,262 INFO L87 Difference]: Start difference. First operand 1464 states and 1757 transitions. Second operand has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 states have internal predecessors, (8), 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) [2024-11-08 17:57:09,467 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 17:57:09,467 INFO L93 Difference]: Finished difference Result 2757 states and 2948 transitions. [2024-11-08 17:57:09,468 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-08 17:57:09,469 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 states have internal predecessors, (8), 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 8 [2024-11-08 17:57:09,469 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 17:57:09,480 INFO L225 Difference]: With dead ends: 2757 [2024-11-08 17:57:09,481 INFO L226 Difference]: Without dead ends: 2757 [2024-11-08 17:57:09,481 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-08 17:57:09,483 INFO L432 NwaCegarLoop]: 1266 mSDtfsCounter, 1601 mSDsluCounter, 1403 mSDsCounter, 0 mSdLazyCounter, 1943 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1605 SdHoareTripleChecker+Valid, 2669 SdHoareTripleChecker+Invalid, 1954 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 1943 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.1s IncrementalHoareTripleChecker+Time [2024-11-08 17:57:09,485 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1605 Valid, 2669 Invalid, 1954 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 1943 Invalid, 0 Unknown, 0 Unchecked, 8.1s Time] [2024-11-08 17:57:09,492 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2757 states. [2024-11-08 17:57:09,531 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2757 to 1613. [2024-11-08 17:57:09,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1613 states, 994 states have (on average 2.045271629778672) internal successors, (2033), 1604 states have internal predecessors, (2033), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-11-08 17:57:09,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1613 states to 1613 states and 2045 transitions. [2024-11-08 17:57:09,541 INFO L78 Accepts]: Start accepts. Automaton has 1613 states and 2045 transitions. Word has length 8 [2024-11-08 17:57:09,541 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 17:57:09,541 INFO L471 AbstractCegarLoop]: Abstraction has 1613 states and 2045 transitions. [2024-11-08 17:57:09,542 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 states have internal predecessors, (8), 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) [2024-11-08 17:57:09,542 INFO L276 IsEmpty]: Start isEmpty. Operand 1613 states and 2045 transitions. [2024-11-08 17:57:09,542 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2024-11-08 17:57:09,543 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 17:57:09,543 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:57:09,570 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a7b4d5e-c5d7-404b-8918-c4de76df1de6/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-08 17:57:09,743 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a7b4d5e-c5d7-404b-8918-c4de76df1de6/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:57:09,744 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 627 more)] === [2024-11-08 17:57:09,744 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:57:09,744 INFO L85 PathProgramCache]: Analyzing trace with hash -1599530194, now seen corresponding path program 1 times [2024-11-08 17:57:09,744 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-08 17:57:09,745 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1924877726] [2024-11-08 17:57:09,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:57:09,745 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:57:09,745 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a7b4d5e-c5d7-404b-8918-c4de76df1de6/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 17:57:09,746 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a7b4d5e-c5d7-404b-8918-c4de76df1de6/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 17:57:09,748 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a7b4d5e-c5d7-404b-8918-c4de76df1de6/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-08 17:57:09,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:57:09,941 INFO L255 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-08 17:57:09,944 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 17:57:09,955 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 [2024-11-08 17:57:09,975 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:57:09,975 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-08 17:57:09,976 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-08 17:57:09,976 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1924877726] [2024-11-08 17:57:09,976 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1924877726] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 17:57:09,976 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 17:57:09,976 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-08 17:57:09,976 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [823738897] [2024-11-08 17:57:09,976 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 17:57:09,977 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 17:57:09,977 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-08 17:57:09,977 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 17:57:09,977 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 17:57:09,978 INFO L87 Difference]: Start difference. First operand 1613 states and 2045 transitions. Second operand has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 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) [2024-11-08 17:57:13,421 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 17:57:13,421 INFO L93 Difference]: Finished difference Result 2161 states and 2825 transitions. [2024-11-08 17:57:13,422 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-08 17:57:13,422 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 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 9 [2024-11-08 17:57:13,422 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 17:57:13,430 INFO L225 Difference]: With dead ends: 2161 [2024-11-08 17:57:13,431 INFO L226 Difference]: Without dead ends: 2161 [2024-11-08 17:57:13,431 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 17:57:13,432 INFO L432 NwaCegarLoop]: 1192 mSDtfsCounter, 948 mSDsluCounter, 359 mSDsCounter, 0 mSdLazyCounter, 869 mSolverCounterSat, 52 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 953 SdHoareTripleChecker+Valid, 1551 SdHoareTripleChecker+Invalid, 921 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 869 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2024-11-08 17:57:13,432 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [953 Valid, 1551 Invalid, 921 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [52 Valid, 869 Invalid, 0 Unknown, 0 Unchecked, 3.4s Time] [2024-11-08 17:57:13,437 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2161 states. [2024-11-08 17:57:13,471 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2161 to 1565. [2024-11-08 17:57:13,474 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1565 states, 994 states have (on average 1.9859154929577465) internal successors, (1974), 1556 states have internal predecessors, (1974), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-11-08 17:57:13,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1565 states to 1565 states and 1986 transitions. [2024-11-08 17:57:13,481 INFO L78 Accepts]: Start accepts. Automaton has 1565 states and 1986 transitions. Word has length 9 [2024-11-08 17:57:13,481 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 17:57:13,482 INFO L471 AbstractCegarLoop]: Abstraction has 1565 states and 1986 transitions. [2024-11-08 17:57:13,482 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 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) [2024-11-08 17:57:13,482 INFO L276 IsEmpty]: Start isEmpty. Operand 1565 states and 1986 transitions. [2024-11-08 17:57:13,482 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2024-11-08 17:57:13,483 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 17:57:13,483 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:57:13,512 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a7b4d5e-c5d7-404b-8918-c4de76df1de6/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-08 17:57:13,683 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a7b4d5e-c5d7-404b-8918-c4de76df1de6/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:57:13,684 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 627 more)] === [2024-11-08 17:57:13,684 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:57:13,684 INFO L85 PathProgramCache]: Analyzing trace with hash -1599530193, now seen corresponding path program 1 times [2024-11-08 17:57:13,685 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-08 17:57:13,685 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1960523751] [2024-11-08 17:57:13,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:57:13,685 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:57:13,685 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a7b4d5e-c5d7-404b-8918-c4de76df1de6/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 17:57:13,688 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a7b4d5e-c5d7-404b-8918-c4de76df1de6/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 17:57:13,689 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a7b4d5e-c5d7-404b-8918-c4de76df1de6/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-08 17:57:13,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:57:13,932 INFO L255 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-08 17:57:13,936 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 17:57:13,955 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 [2024-11-08 17:57:13,999 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:57:13,999 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-08 17:57:13,999 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-08 17:57:13,999 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1960523751] [2024-11-08 17:57:13,999 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1960523751] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 17:57:13,999 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 17:57:14,000 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-08 17:57:14,001 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1372952965] [2024-11-08 17:57:14,001 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 17:57:14,001 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 17:57:14,001 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-08 17:57:14,002 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 17:57:14,002 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 17:57:14,002 INFO L87 Difference]: Start difference. First operand 1565 states and 1986 transitions. Second operand has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 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) [2024-11-08 17:57:18,634 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 17:57:18,634 INFO L93 Difference]: Finished difference Result 2260 states and 2924 transitions. [2024-11-08 17:57:18,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-08 17:57:18,635 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 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 9 [2024-11-08 17:57:18,636 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 17:57:18,643 INFO L225 Difference]: With dead ends: 2260 [2024-11-08 17:57:18,644 INFO L226 Difference]: Without dead ends: 2260 [2024-11-08 17:57:18,644 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 17:57:18,645 INFO L432 NwaCegarLoop]: 1378 mSDtfsCounter, 708 mSDsluCounter, 536 mSDsCounter, 0 mSdLazyCounter, 852 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 709 SdHoareTripleChecker+Valid, 1914 SdHoareTripleChecker+Invalid, 865 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 852 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.6s IncrementalHoareTripleChecker+Time [2024-11-08 17:57:18,646 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [709 Valid, 1914 Invalid, 865 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 852 Invalid, 0 Unknown, 0 Unchecked, 4.6s Time] [2024-11-08 17:57:18,651 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2260 states. [2024-11-08 17:57:18,684 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2260 to 1592. [2024-11-08 17:57:18,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1592 states, 1031 states have (on average 1.9660523763336566) internal successors, (2027), 1583 states have internal predecessors, (2027), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-11-08 17:57:18,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1592 states to 1592 states and 2039 transitions. [2024-11-08 17:57:18,693 INFO L78 Accepts]: Start accepts. Automaton has 1592 states and 2039 transitions. Word has length 9 [2024-11-08 17:57:18,693 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 17:57:18,694 INFO L471 AbstractCegarLoop]: Abstraction has 1592 states and 2039 transitions. [2024-11-08 17:57:18,694 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 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) [2024-11-08 17:57:18,694 INFO L276 IsEmpty]: Start isEmpty. Operand 1592 states and 2039 transitions. [2024-11-08 17:57:18,695 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2024-11-08 17:57:18,695 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 17:57:18,695 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:57:18,723 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a7b4d5e-c5d7-404b-8918-c4de76df1de6/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-08 17:57:18,895 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a7b4d5e-c5d7-404b-8918-c4de76df1de6/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:57:18,896 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr519REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 627 more)] === [2024-11-08 17:57:18,897 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:57:18,897 INFO L85 PathProgramCache]: Analyzing trace with hash -1023345465, now seen corresponding path program 1 times [2024-11-08 17:57:18,897 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-08 17:57:18,897 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1996284165] [2024-11-08 17:57:18,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:57:18,898 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:57:18,898 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a7b4d5e-c5d7-404b-8918-c4de76df1de6/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 17:57:18,900 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a7b4d5e-c5d7-404b-8918-c4de76df1de6/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 17:57:18,902 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a7b4d5e-c5d7-404b-8918-c4de76df1de6/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-08 17:57:19,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:57:19,107 INFO L255 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-08 17:57:19,109 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 17:57:19,255 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:57:19,255 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-08 17:57:19,256 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-08 17:57:19,256 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1996284165] [2024-11-08 17:57:19,256 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1996284165] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 17:57:19,256 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 17:57:19,256 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-08 17:57:19,257 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [563109962] [2024-11-08 17:57:19,257 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 17:57:19,257 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-08 17:57:19,257 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-08 17:57:19,258 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-08 17:57:19,258 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-08 17:57:19,258 INFO L87 Difference]: Start difference. First operand 1592 states and 2039 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) [2024-11-08 17:57:20,511 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 17:57:20,511 INFO L93 Difference]: Finished difference Result 2213 states and 2800 transitions. [2024-11-08 17:57:20,512 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-08 17:57:20,512 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 [2024-11-08 17:57:20,512 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 17:57:20,521 INFO L225 Difference]: With dead ends: 2213 [2024-11-08 17:57:20,521 INFO L226 Difference]: Without dead ends: 2213 [2024-11-08 17:57:20,521 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-08 17:57:20,522 INFO L432 NwaCegarLoop]: 1396 mSDtfsCounter, 643 mSDsluCounter, 2420 mSDsCounter, 0 mSdLazyCounter, 377 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 644 SdHoareTripleChecker+Valid, 3816 SdHoareTripleChecker+Invalid, 386 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 377 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2024-11-08 17:57:20,522 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [644 Valid, 3816 Invalid, 386 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 377 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2024-11-08 17:57:20,526 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2213 states. [2024-11-08 17:57:20,559 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2213 to 1852. [2024-11-08 17:57:20,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1852 states, 1289 states have (on average 1.9743987587276959) internal successors, (2545), 1841 states have internal predecessors, (2545), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2024-11-08 17:57:20,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1852 states to 1852 states and 2561 transitions. [2024-11-08 17:57:20,570 INFO L78 Accepts]: Start accepts. Automaton has 1852 states and 2561 transitions. Word has length 13 [2024-11-08 17:57:20,571 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 17:57:20,571 INFO L471 AbstractCegarLoop]: Abstraction has 1852 states and 2561 transitions. [2024-11-08 17:57:20,571 INFO L472 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) [2024-11-08 17:57:20,571 INFO L276 IsEmpty]: Start isEmpty. Operand 1852 states and 2561 transitions. [2024-11-08 17:57:20,572 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2024-11-08 17:57:20,572 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 17:57:20,572 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:57:20,600 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a7b4d5e-c5d7-404b-8918-c4de76df1de6/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-08 17:57:20,773 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a7b4d5e-c5d7-404b-8918-c4de76df1de6/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:57:20,773 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr330REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 627 more)] === [2024-11-08 17:57:20,774 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:57:20,774 INFO L85 PathProgramCache]: Analyzing trace with hash -723943859, now seen corresponding path program 1 times [2024-11-08 17:57:20,774 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-08 17:57:20,774 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [446897129] [2024-11-08 17:57:20,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:57:20,775 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:57:20,775 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a7b4d5e-c5d7-404b-8918-c4de76df1de6/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 17:57:20,778 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a7b4d5e-c5d7-404b-8918-c4de76df1de6/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 17:57:20,781 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a7b4d5e-c5d7-404b-8918-c4de76df1de6/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-08 17:57:20,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:57:20,988 INFO L255 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-08 17:57:20,991 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 17:57:21,005 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 [2024-11-08 17:57:21,078 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:57:21,079 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-08 17:57:21,079 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-08 17:57:21,079 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [446897129] [2024-11-08 17:57:21,079 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [446897129] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 17:57:21,080 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 17:57:21,080 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-08 17:57:21,080 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [579481553] [2024-11-08 17:57:21,080 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 17:57:21,081 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-08 17:57:21,081 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-08 17:57:21,081 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-08 17:57:21,081 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-08 17:57:21,082 INFO L87 Difference]: Start difference. First operand 1852 states and 2561 transitions. Second operand has 4 states, 3 states have (on average 5.0) internal successors, (15), 4 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) [2024-11-08 17:57:24,882 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 17:57:24,883 INFO L93 Difference]: Finished difference Result 2038 states and 2691 transitions. [2024-11-08 17:57:24,883 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-08 17:57:24,883 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 5.0) internal successors, (15), 4 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 [2024-11-08 17:57:24,884 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 17:57:24,890 INFO L225 Difference]: With dead ends: 2038 [2024-11-08 17:57:24,890 INFO L226 Difference]: Without dead ends: 2038 [2024-11-08 17:57:24,890 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-08 17:57:24,891 INFO L432 NwaCegarLoop]: 722 mSDtfsCounter, 1168 mSDsluCounter, 773 mSDsCounter, 0 mSdLazyCounter, 1264 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1173 SdHoareTripleChecker+Valid, 1495 SdHoareTripleChecker+Invalid, 1293 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 1264 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.7s IncrementalHoareTripleChecker+Time [2024-11-08 17:57:24,891 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1173 Valid, 1495 Invalid, 1293 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 1264 Invalid, 0 Unknown, 0 Unchecked, 3.7s Time] [2024-11-08 17:57:24,895 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2038 states. [2024-11-08 17:57:24,925 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2038 to 1829. [2024-11-08 17:57:24,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1829 states, 1289 states have (on average 1.9030256012412723) internal successors, (2453), 1818 states have internal predecessors, (2453), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2024-11-08 17:57:24,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1829 states to 1829 states and 2469 transitions. [2024-11-08 17:57:24,935 INFO L78 Accepts]: Start accepts. Automaton has 1829 states and 2469 transitions. Word has length 15 [2024-11-08 17:57:24,936 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 17:57:24,936 INFO L471 AbstractCegarLoop]: Abstraction has 1829 states and 2469 transitions. [2024-11-08 17:57:24,936 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 5.0) internal successors, (15), 4 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) [2024-11-08 17:57:24,936 INFO L276 IsEmpty]: Start isEmpty. Operand 1829 states and 2469 transitions. [2024-11-08 17:57:24,937 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2024-11-08 17:57:24,937 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 17:57:24,937 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:57:24,963 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a7b4d5e-c5d7-404b-8918-c4de76df1de6/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-11-08 17:57:25,142 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a7b4d5e-c5d7-404b-8918-c4de76df1de6/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:57:25,142 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr331REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 627 more)] === [2024-11-08 17:57:25,143 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:57:25,143 INFO L85 PathProgramCache]: Analyzing trace with hash -723943858, now seen corresponding path program 1 times [2024-11-08 17:57:25,143 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-08 17:57:25,143 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1544846136] [2024-11-08 17:57:25,143 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:57:25,144 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:57:25,144 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a7b4d5e-c5d7-404b-8918-c4de76df1de6/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 17:57:25,145 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a7b4d5e-c5d7-404b-8918-c4de76df1de6/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 17:57:25,146 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a7b4d5e-c5d7-404b-8918-c4de76df1de6/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-08 17:57:25,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:57:25,360 INFO L255 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-08 17:57:25,362 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 17:57:25,375 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:57:25,375 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-08 17:57:25,375 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-08 17:57:25,376 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1544846136] [2024-11-08 17:57:25,376 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1544846136] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 17:57:25,376 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 17:57:25,376 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-08 17:57:25,376 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1258187252] [2024-11-08 17:57:25,377 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 17:57:25,377 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 17:57:25,378 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-08 17:57:25,378 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 17:57:25,378 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 17:57:25,379 INFO L87 Difference]: Start difference. First operand 1829 states and 2469 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) [2024-11-08 17:57:25,438 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 17:57:25,438 INFO L93 Difference]: Finished difference Result 1741 states and 2337 transitions. [2024-11-08 17:57:25,439 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-08 17:57:25,439 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 [2024-11-08 17:57:25,439 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 17:57:25,446 INFO L225 Difference]: With dead ends: 1741 [2024-11-08 17:57:25,446 INFO L226 Difference]: Without dead ends: 1741 [2024-11-08 17:57:25,446 INFO L431 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 [2024-11-08 17:57:25,447 INFO L432 NwaCegarLoop]: 1190 mSDtfsCounter, 61 mSDsluCounter, 1137 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 61 SdHoareTripleChecker+Valid, 2327 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-08 17:57:25,447 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [61 Valid, 2327 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-08 17:57:25,451 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1741 states. [2024-11-08 17:57:25,480 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1741 to 1741. [2024-11-08 17:57:25,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1741 states, 1213 states have (on average 1.9134377576257213) internal successors, (2321), 1730 states have internal predecessors, (2321), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2024-11-08 17:57:25,494 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1741 states to 1741 states and 2337 transitions. [2024-11-08 17:57:25,499 INFO L78 Accepts]: Start accepts. Automaton has 1741 states and 2337 transitions. Word has length 15 [2024-11-08 17:57:25,499 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 17:57:25,499 INFO L471 AbstractCegarLoop]: Abstraction has 1741 states and 2337 transitions. [2024-11-08 17:57:25,499 INFO L472 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) [2024-11-08 17:57:25,499 INFO L276 IsEmpty]: Start isEmpty. Operand 1741 states and 2337 transitions. [2024-11-08 17:57:25,500 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2024-11-08 17:57:25,500 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 17:57:25,500 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:57:25,530 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a7b4d5e-c5d7-404b-8918-c4de76df1de6/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-11-08 17:57:25,700 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a7b4d5e-c5d7-404b-8918-c4de76df1de6/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:57:25,701 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr355REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 627 more)] === [2024-11-08 17:57:25,701 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:57:25,702 INFO L85 PathProgramCache]: Analyzing trace with hash -965639653, now seen corresponding path program 1 times [2024-11-08 17:57:25,702 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-08 17:57:25,702 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [483041064] [2024-11-08 17:57:25,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:57:25,702 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:57:25,703 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a7b4d5e-c5d7-404b-8918-c4de76df1de6/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 17:57:25,707 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a7b4d5e-c5d7-404b-8918-c4de76df1de6/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 17:57:25,711 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a7b4d5e-c5d7-404b-8918-c4de76df1de6/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-08 17:57:25,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:57:25,951 INFO L255 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-08 17:57:25,953 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 17:57:25,990 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:57:25,990 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-08 17:57:25,991 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-08 17:57:25,991 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [483041064] [2024-11-08 17:57:25,991 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [483041064] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 17:57:25,991 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 17:57:25,991 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-08 17:57:25,992 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [102738910] [2024-11-08 17:57:25,992 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 17:57:25,992 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-08 17:57:25,992 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-08 17:57:25,993 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-08 17:57:25,994 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-08 17:57:25,994 INFO L87 Difference]: Start difference. First operand 1741 states and 2337 transitions. Second operand has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 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) [2024-11-08 17:57:26,130 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 17:57:26,130 INFO L93 Difference]: Finished difference Result 1702 states and 2249 transitions. [2024-11-08 17:57:26,131 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-08 17:57:26,131 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 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 16 [2024-11-08 17:57:26,131 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 17:57:26,137 INFO L225 Difference]: With dead ends: 1702 [2024-11-08 17:57:26,137 INFO L226 Difference]: Without dead ends: 1702 [2024-11-08 17:57:26,138 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-08 17:57:26,139 INFO L432 NwaCegarLoop]: 1152 mSDtfsCounter, 45 mSDsluCounter, 2281 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 3433 SdHoareTripleChecker+Invalid, 59 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-08 17:57:26,140 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [45 Valid, 3433 Invalid, 59 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-08 17:57:26,143 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1702 states. [2024-11-08 17:57:26,166 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1702 to 1702. [2024-11-08 17:57:26,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1702 states, 1181 states have (on average 1.890770533446232) internal successors, (2233), 1691 states have internal predecessors, (2233), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2024-11-08 17:57:26,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1702 states to 1702 states and 2249 transitions. [2024-11-08 17:57:26,174 INFO L78 Accepts]: Start accepts. Automaton has 1702 states and 2249 transitions. Word has length 16 [2024-11-08 17:57:26,175 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 17:57:26,175 INFO L471 AbstractCegarLoop]: Abstraction has 1702 states and 2249 transitions. [2024-11-08 17:57:26,175 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 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) [2024-11-08 17:57:26,175 INFO L276 IsEmpty]: Start isEmpty. Operand 1702 states and 2249 transitions. [2024-11-08 17:57:26,176 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2024-11-08 17:57:26,176 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 17:57:26,177 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:57:26,205 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a7b4d5e-c5d7-404b-8918-c4de76df1de6/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-11-08 17:57:26,377 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a7b4d5e-c5d7-404b-8918-c4de76df1de6/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:57:26,378 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr628ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 627 more)] === [2024-11-08 17:57:26,378 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:57:26,378 INFO L85 PathProgramCache]: Analyzing trace with hash -1781527879, now seen corresponding path program 1 times [2024-11-08 17:57:26,379 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-08 17:57:26,379 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [652499330] [2024-11-08 17:57:26,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:57:26,379 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:57:26,379 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a7b4d5e-c5d7-404b-8918-c4de76df1de6/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 17:57:26,381 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a7b4d5e-c5d7-404b-8918-c4de76df1de6/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 17:57:26,383 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a7b4d5e-c5d7-404b-8918-c4de76df1de6/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-08 17:57:26,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:57:26,604 INFO L255 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-08 17:57:26,607 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 17:57:26,782 WARN L873 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_main_~#i~0#1.base_47| (_ BitVec 32))) (and (= |c_#valid| (store |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#i~0#1.base_47| (_ bv0 1))) (= (_ bv0 1) (select |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#i~0#1.base_47|)))) is different from true [2024-11-08 17:57:26,782 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:57:26,782 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-08 17:57:26,783 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-08 17:57:26,783 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [652499330] [2024-11-08 17:57:26,783 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [652499330] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 17:57:26,783 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 17:57:26,783 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-08 17:57:26,783 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2082446095] [2024-11-08 17:57:26,783 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 17:57:26,784 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-08 17:57:26,784 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-08 17:57:26,784 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-08 17:57:26,784 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=4, Unknown=1, NotChecked=2, Total=12 [2024-11-08 17:57:26,785 INFO L87 Difference]: Start difference. First operand 1702 states and 2249 transitions. Second operand has 4 states, 3 states have (on average 5.666666666666667) 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) [2024-11-08 17:57:29,329 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 17:57:29,329 INFO L93 Difference]: Finished difference Result 1998 states and 2620 transitions. [2024-11-08 17:57:29,330 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-08 17:57:29,330 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 5.666666666666667) 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 [2024-11-08 17:57:29,330 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 17:57:29,335 INFO L225 Difference]: With dead ends: 1998 [2024-11-08 17:57:29,335 INFO L226 Difference]: Without dead ends: 1990 [2024-11-08 17:57:29,336 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=4, Unknown=1, NotChecked=2, Total=12 [2024-11-08 17:57:29,336 INFO L432 NwaCegarLoop]: 1075 mSDtfsCounter, 242 mSDsluCounter, 637 mSDsCounter, 0 mSdLazyCounter, 642 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 243 SdHoareTripleChecker+Valid, 1712 SdHoareTripleChecker+Invalid, 2074 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 642 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1432 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2024-11-08 17:57:29,337 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [243 Valid, 1712 Invalid, 2074 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 642 Invalid, 0 Unknown, 1432 Unchecked, 2.5s Time] [2024-11-08 17:57:29,338 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1990 states. [2024-11-08 17:57:29,363 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1990 to 1760. [2024-11-08 17:57:29,366 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1760 states, 1238 states have (on average 1.85702746365105) internal successors, (2299), 1748 states have internal predecessors, (2299), 9 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2024-11-08 17:57:29,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1760 states to 1760 states and 2317 transitions. [2024-11-08 17:57:29,371 INFO L78 Accepts]: Start accepts. Automaton has 1760 states and 2317 transitions. Word has length 17 [2024-11-08 17:57:29,372 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 17:57:29,372 INFO L471 AbstractCegarLoop]: Abstraction has 1760 states and 2317 transitions. [2024-11-08 17:57:29,372 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 5.666666666666667) 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) [2024-11-08 17:57:29,372 INFO L276 IsEmpty]: Start isEmpty. Operand 1760 states and 2317 transitions. [2024-11-08 17:57:29,373 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2024-11-08 17:57:29,373 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 17:57:29,373 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:57:29,400 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a7b4d5e-c5d7-404b-8918-c4de76df1de6/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-11-08 17:57:29,578 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a7b4d5e-c5d7-404b-8918-c4de76df1de6/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:57:29,578 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr14REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 627 more)] === [2024-11-08 17:57:29,578 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:57:29,579 INFO L85 PathProgramCache]: Analyzing trace with hash -1271928384, now seen corresponding path program 1 times [2024-11-08 17:57:29,579 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-08 17:57:29,579 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2140410783] [2024-11-08 17:57:29,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:57:29,579 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:57:29,580 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a7b4d5e-c5d7-404b-8918-c4de76df1de6/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 17:57:29,581 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a7b4d5e-c5d7-404b-8918-c4de76df1de6/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 17:57:29,582 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a7b4d5e-c5d7-404b-8918-c4de76df1de6/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-11-08 17:57:29,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:57:29,824 INFO L255 TraceCheckSpWp]: Trace formula consists of 132 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-08 17:57:29,831 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 17:57:29,848 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 [2024-11-08 17:57:29,922 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:57:29,923 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-08 17:57:29,923 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-08 17:57:29,923 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2140410783] [2024-11-08 17:57:29,923 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2140410783] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 17:57:29,924 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 17:57:29,924 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-08 17:57:29,924 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1793921807] [2024-11-08 17:57:29,924 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 17:57:29,925 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-08 17:57:29,925 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-08 17:57:29,925 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-08 17:57:29,926 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-08 17:57:29,926 INFO L87 Difference]: Start difference. First operand 1760 states and 2317 transitions. Second operand has 4 states, 3 states have (on average 6.666666666666667) internal successors, (20), 4 states have internal predecessors, (20), 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) [2024-11-08 17:57:33,968 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 17:57:33,969 INFO L93 Difference]: Finished difference Result 2196 states and 2862 transitions. [2024-11-08 17:57:33,969 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-08 17:57:33,969 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 6.666666666666667) internal successors, (20), 4 states have internal predecessors, (20), 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 20 [2024-11-08 17:57:33,969 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 17:57:33,975 INFO L225 Difference]: With dead ends: 2196 [2024-11-08 17:57:33,976 INFO L226 Difference]: Without dead ends: 2196 [2024-11-08 17:57:33,976 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-08 17:57:33,976 INFO L432 NwaCegarLoop]: 1042 mSDtfsCounter, 912 mSDsluCounter, 1038 mSDsCounter, 0 mSdLazyCounter, 1458 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 917 SdHoareTripleChecker+Valid, 2080 SdHoareTripleChecker+Invalid, 1486 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 1458 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.0s IncrementalHoareTripleChecker+Time [2024-11-08 17:57:33,977 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [917 Valid, 2080 Invalid, 1486 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 1458 Invalid, 0 Unknown, 0 Unchecked, 4.0s Time] [2024-11-08 17:57:33,979 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2196 states. [2024-11-08 17:57:34,001 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2196 to 1737. [2024-11-08 17:57:34,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1737 states, 1238 states have (on average 1.819870759289176) internal successors, (2253), 1725 states have internal predecessors, (2253), 9 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2024-11-08 17:57:34,007 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1737 states to 1737 states and 2271 transitions. [2024-11-08 17:57:34,008 INFO L78 Accepts]: Start accepts. Automaton has 1737 states and 2271 transitions. Word has length 20 [2024-11-08 17:57:34,008 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 17:57:34,008 INFO L471 AbstractCegarLoop]: Abstraction has 1737 states and 2271 transitions. [2024-11-08 17:57:34,008 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 6.666666666666667) internal successors, (20), 4 states have internal predecessors, (20), 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) [2024-11-08 17:57:34,009 INFO L276 IsEmpty]: Start isEmpty. Operand 1737 states and 2271 transitions. [2024-11-08 17:57:34,009 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2024-11-08 17:57:34,009 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 17:57:34,009 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:57:34,032 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a7b4d5e-c5d7-404b-8918-c4de76df1de6/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2024-11-08 17:57:34,214 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a7b4d5e-c5d7-404b-8918-c4de76df1de6/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:57:34,214 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr15REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 627 more)] === [2024-11-08 17:57:34,215 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:57:34,215 INFO L85 PathProgramCache]: Analyzing trace with hash -1271928383, now seen corresponding path program 1 times [2024-11-08 17:57:34,215 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-08 17:57:34,216 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [705167240] [2024-11-08 17:57:34,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:57:34,217 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:57:34,217 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a7b4d5e-c5d7-404b-8918-c4de76df1de6/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 17:57:34,219 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a7b4d5e-c5d7-404b-8918-c4de76df1de6/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 17:57:34,220 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a7b4d5e-c5d7-404b-8918-c4de76df1de6/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-11-08 17:57:34,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:57:34,431 INFO L255 TraceCheckSpWp]: Trace formula consists of 132 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-08 17:57:34,433 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 17:57:34,443 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:57:34,443 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-08 17:57:34,443 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-08 17:57:34,443 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [705167240] [2024-11-08 17:57:34,443 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [705167240] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 17:57:34,444 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 17:57:34,444 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-08 17:57:34,444 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1645343170] [2024-11-08 17:57:34,444 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 17:57:34,444 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 17:57:34,445 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-08 17:57:34,445 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 17:57:34,445 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 17:57:34,445 INFO L87 Difference]: Start difference. First operand 1737 states and 2271 transitions. Second operand has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 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) [2024-11-08 17:57:34,487 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 17:57:34,487 INFO L93 Difference]: Finished difference Result 1687 states and 2205 transitions. [2024-11-08 17:57:34,488 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-08 17:57:34,488 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 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 20 [2024-11-08 17:57:34,488 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 17:57:34,494 INFO L225 Difference]: With dead ends: 1687 [2024-11-08 17:57:34,494 INFO L226 Difference]: Without dead ends: 1687 [2024-11-08 17:57:34,494 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 17:57:34,495 INFO L432 NwaCegarLoop]: 1106 mSDtfsCounter, 61 mSDsluCounter, 1053 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 61 SdHoareTripleChecker+Valid, 2159 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-08 17:57:34,495 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [61 Valid, 2159 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-08 17:57:34,497 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1687 states. [2024-11-08 17:57:34,515 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1687 to 1687. [2024-11-08 17:57:34,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1687 states, 1200 states have (on average 1.8225) internal successors, (2187), 1675 states have internal predecessors, (2187), 9 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2024-11-08 17:57:34,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1687 states to 1687 states and 2205 transitions. [2024-11-08 17:57:34,522 INFO L78 Accepts]: Start accepts. Automaton has 1687 states and 2205 transitions. Word has length 20 [2024-11-08 17:57:34,522 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 17:57:34,522 INFO L471 AbstractCegarLoop]: Abstraction has 1687 states and 2205 transitions. [2024-11-08 17:57:34,522 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 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) [2024-11-08 17:57:34,523 INFO L276 IsEmpty]: Start isEmpty. Operand 1687 states and 2205 transitions. [2024-11-08 17:57:34,523 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2024-11-08 17:57:34,523 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 17:57:34,523 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:57:34,547 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a7b4d5e-c5d7-404b-8918-c4de76df1de6/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2024-11-08 17:57:34,724 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a7b4d5e-c5d7-404b-8918-c4de76df1de6/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:57:34,724 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr39REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 627 more)] === [2024-11-08 17:57:34,725 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:57:34,725 INFO L85 PathProgramCache]: Analyzing trace with hash -773291619, now seen corresponding path program 1 times [2024-11-08 17:57:34,725 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-08 17:57:34,725 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [809891902] [2024-11-08 17:57:34,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:57:34,726 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:57:34,726 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a7b4d5e-c5d7-404b-8918-c4de76df1de6/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 17:57:34,728 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a7b4d5e-c5d7-404b-8918-c4de76df1de6/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 17:57:34,729 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a7b4d5e-c5d7-404b-8918-c4de76df1de6/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-11-08 17:57:34,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:57:34,950 INFO L255 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-08 17:57:34,951 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 17:57:34,974 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:57:34,974 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-08 17:57:34,975 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-08 17:57:34,975 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [809891902] [2024-11-08 17:57:34,975 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [809891902] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 17:57:34,975 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 17:57:34,975 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-08 17:57:34,975 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [950493538] [2024-11-08 17:57:34,975 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 17:57:34,975 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-08 17:57:34,976 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-08 17:57:34,976 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-08 17:57:34,976 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-08 17:57:34,976 INFO L87 Difference]: Start difference. First operand 1687 states and 2205 transitions. Second operand has 4 states, 4 states have (on average 5.25) internal successors, (21), 4 states have internal predecessors, (21), 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) [2024-11-08 17:57:35,067 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 17:57:35,067 INFO L93 Difference]: Finished difference Result 1664 states and 2161 transitions. [2024-11-08 17:57:35,067 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-08 17:57:35,068 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.25) internal successors, (21), 4 states have internal predecessors, (21), 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 21 [2024-11-08 17:57:35,068 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 17:57:35,073 INFO L225 Difference]: With dead ends: 1664 [2024-11-08 17:57:35,073 INFO L226 Difference]: Without dead ends: 1664 [2024-11-08 17:57:35,073 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-08 17:57:35,074 INFO L432 NwaCegarLoop]: 1068 mSDtfsCounter, 45 mSDsluCounter, 2113 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 3181 SdHoareTripleChecker+Invalid, 59 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-08 17:57:35,074 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [45 Valid, 3181 Invalid, 59 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-08 17:57:35,077 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1664 states. [2024-11-08 17:57:35,094 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1664 to 1664. [2024-11-08 17:57:35,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1664 states, 1184 states have (on average 1.8099662162162162) internal successors, (2143), 1652 states have internal predecessors, (2143), 9 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2024-11-08 17:57:35,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1664 states to 1664 states and 2161 transitions. [2024-11-08 17:57:35,101 INFO L78 Accepts]: Start accepts. Automaton has 1664 states and 2161 transitions. Word has length 21 [2024-11-08 17:57:35,101 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 17:57:35,101 INFO L471 AbstractCegarLoop]: Abstraction has 1664 states and 2161 transitions. [2024-11-08 17:57:35,101 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.25) internal successors, (21), 4 states have internal predecessors, (21), 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) [2024-11-08 17:57:35,101 INFO L276 IsEmpty]: Start isEmpty. Operand 1664 states and 2161 transitions. [2024-11-08 17:57:35,102 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2024-11-08 17:57:35,102 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 17:57:35,102 INFO L215 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] [2024-11-08 17:57:35,129 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a7b4d5e-c5d7-404b-8918-c4de76df1de6/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2024-11-08 17:57:35,303 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a7b4d5e-c5d7-404b-8918-c4de76df1de6/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:57:35,303 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr369REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 627 more)] === [2024-11-08 17:57:35,303 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:57:35,303 INFO L85 PathProgramCache]: Analyzing trace with hash -987302423, now seen corresponding path program 1 times [2024-11-08 17:57:35,304 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-08 17:57:35,304 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [528482533] [2024-11-08 17:57:35,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:57:35,304 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:57:35,304 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a7b4d5e-c5d7-404b-8918-c4de76df1de6/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 17:57:35,305 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a7b4d5e-c5d7-404b-8918-c4de76df1de6/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 17:57:35,306 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a7b4d5e-c5d7-404b-8918-c4de76df1de6/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-11-08 17:57:35,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:57:35,501 INFO L255 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-08 17:57:35,504 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 17:57:35,511 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 [2024-11-08 17:57:35,802 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:57:35,802 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-08 17:57:35,802 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-08 17:57:35,802 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [528482533] [2024-11-08 17:57:35,802 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [528482533] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 17:57:35,803 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 17:57:35,803 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-08 17:57:35,803 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1637893036] [2024-11-08 17:57:35,803 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 17:57:35,803 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-08 17:57:35,803 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-08 17:57:35,804 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-08 17:57:35,804 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-08 17:57:35,804 INFO L87 Difference]: Start difference. First operand 1664 states and 2161 transitions. Second operand has 4 states, 3 states have (on average 10.0) internal successors, (30), 4 states have internal predecessors, (30), 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) [2024-11-08 17:57:40,682 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 17:57:40,682 INFO L93 Difference]: Finished difference Result 2032 states and 2395 transitions. [2024-11-08 17:57:40,683 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-08 17:57:40,683 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 10.0) internal successors, (30), 4 states have internal predecessors, (30), 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 30 [2024-11-08 17:57:40,683 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 17:57:40,689 INFO L225 Difference]: With dead ends: 2032 [2024-11-08 17:57:40,689 INFO L226 Difference]: Without dead ends: 2032 [2024-11-08 17:57:40,689 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-08 17:57:40,690 INFO L432 NwaCegarLoop]: 846 mSDtfsCounter, 578 mSDsluCounter, 1125 mSDsCounter, 0 mSdLazyCounter, 1296 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 580 SdHoareTripleChecker+Valid, 1971 SdHoareTripleChecker+Invalid, 1299 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 1296 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.8s IncrementalHoareTripleChecker+Time [2024-11-08 17:57:40,691 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [580 Valid, 1971 Invalid, 1299 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 1296 Invalid, 0 Unknown, 0 Unchecked, 4.8s Time] [2024-11-08 17:57:40,694 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2032 states. [2024-11-08 17:57:40,711 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2032 to 1664. [2024-11-08 17:57:40,714 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1664 states, 1184 states have (on average 1.7998310810810811) internal successors, (2131), 1652 states have internal predecessors, (2131), 9 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2024-11-08 17:57:40,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1664 states to 1664 states and 2149 transitions. [2024-11-08 17:57:40,719 INFO L78 Accepts]: Start accepts. Automaton has 1664 states and 2149 transitions. Word has length 30 [2024-11-08 17:57:40,719 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 17:57:40,719 INFO L471 AbstractCegarLoop]: Abstraction has 1664 states and 2149 transitions. [2024-11-08 17:57:40,719 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 10.0) internal successors, (30), 4 states have internal predecessors, (30), 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) [2024-11-08 17:57:40,720 INFO L276 IsEmpty]: Start isEmpty. Operand 1664 states and 2149 transitions. [2024-11-08 17:57:40,720 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2024-11-08 17:57:40,720 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 17:57:40,721 INFO L215 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] [2024-11-08 17:57:40,749 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a7b4d5e-c5d7-404b-8918-c4de76df1de6/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2024-11-08 17:57:40,921 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a7b4d5e-c5d7-404b-8918-c4de76df1de6/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:57:40,922 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr53REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 627 more)] === [2024-11-08 17:57:40,922 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:57:40,922 INFO L85 PathProgramCache]: Analyzing trace with hash -1472895925, now seen corresponding path program 1 times [2024-11-08 17:57:40,922 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-08 17:57:40,923 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [725072618] [2024-11-08 17:57:40,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:57:40,923 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:57:40,923 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a7b4d5e-c5d7-404b-8918-c4de76df1de6/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 17:57:40,926 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a7b4d5e-c5d7-404b-8918-c4de76df1de6/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 17:57:40,928 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a7b4d5e-c5d7-404b-8918-c4de76df1de6/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2024-11-08 17:57:41,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:57:41,180 INFO L255 TraceCheckSpWp]: Trace formula consists of 148 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-08 17:57:41,182 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 17:57:41,192 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 [2024-11-08 17:57:41,500 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:57:41,500 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-08 17:57:41,500 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-08 17:57:41,501 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [725072618] [2024-11-08 17:57:41,501 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [725072618] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 17:57:41,501 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 17:57:41,501 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-08 17:57:41,501 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [279160648] [2024-11-08 17:57:41,501 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 17:57:41,502 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-08 17:57:41,502 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-08 17:57:41,502 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-08 17:57:41,502 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-08 17:57:41,503 INFO L87 Difference]: Start difference. First operand 1664 states and 2149 transitions. Second operand has 4 states, 3 states have (on average 11.666666666666666) internal successors, (35), 4 states have internal predecessors, (35), 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) [2024-11-08 17:57:46,620 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 17:57:46,621 INFO L93 Difference]: Finished difference Result 2187 states and 2770 transitions. [2024-11-08 17:57:46,621 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-08 17:57:46,622 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 11.666666666666666) internal successors, (35), 4 states have internal predecessors, (35), 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 35 [2024-11-08 17:57:46,622 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 17:57:46,627 INFO L225 Difference]: With dead ends: 2187 [2024-11-08 17:57:46,627 INFO L226 Difference]: Without dead ends: 2187 [2024-11-08 17:57:46,627 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-08 17:57:46,628 INFO L432 NwaCegarLoop]: 1292 mSDtfsCounter, 551 mSDsluCounter, 1275 mSDsCounter, 0 mSdLazyCounter, 1445 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 552 SdHoareTripleChecker+Valid, 2567 SdHoareTripleChecker+Invalid, 1448 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 1445 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.0s IncrementalHoareTripleChecker+Time [2024-11-08 17:57:46,628 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [552 Valid, 2567 Invalid, 1448 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 1445 Invalid, 0 Unknown, 0 Unchecked, 5.0s Time] [2024-11-08 17:57:46,631 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2187 states. [2024-11-08 17:57:46,651 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2187 to 1660. [2024-11-08 17:57:46,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1660 states, 1184 states have (on average 1.7930743243243243) internal successors, (2123), 1648 states have internal predecessors, (2123), 9 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2024-11-08 17:57:46,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1660 states to 1660 states and 2141 transitions. [2024-11-08 17:57:46,658 INFO L78 Accepts]: Start accepts. Automaton has 1660 states and 2141 transitions. Word has length 35 [2024-11-08 17:57:46,658 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 17:57:46,658 INFO L471 AbstractCegarLoop]: Abstraction has 1660 states and 2141 transitions. [2024-11-08 17:57:46,659 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 11.666666666666666) internal successors, (35), 4 states have internal predecessors, (35), 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) [2024-11-08 17:57:46,659 INFO L276 IsEmpty]: Start isEmpty. Operand 1660 states and 2141 transitions. [2024-11-08 17:57:46,660 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2024-11-08 17:57:46,660 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 17:57:46,660 INFO L215 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] [2024-11-08 17:57:46,686 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a7b4d5e-c5d7-404b-8918-c4de76df1de6/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2024-11-08 17:57:46,861 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a7b4d5e-c5d7-404b-8918-c4de76df1de6/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:57:46,861 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr414REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 627 more)] === [2024-11-08 17:57:46,861 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:57:46,861 INFO L85 PathProgramCache]: Analyzing trace with hash -1634540191, now seen corresponding path program 1 times [2024-11-08 17:57:46,862 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-08 17:57:46,862 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [225577261] [2024-11-08 17:57:46,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:57:46,862 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:57:46,862 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a7b4d5e-c5d7-404b-8918-c4de76df1de6/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 17:57:46,863 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a7b4d5e-c5d7-404b-8918-c4de76df1de6/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 17:57:46,864 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a7b4d5e-c5d7-404b-8918-c4de76df1de6/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2024-11-08 17:57:47,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:57:47,130 INFO L255 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-08 17:57:47,133 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 17:57:47,191 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:57:47,191 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-08 17:57:47,192 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-08 17:57:47,192 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [225577261] [2024-11-08 17:57:47,192 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [225577261] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 17:57:47,192 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 17:57:47,192 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-08 17:57:47,192 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [333073451] [2024-11-08 17:57:47,192 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 17:57:47,193 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 17:57:47,193 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-08 17:57:47,193 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 17:57:47,193 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 17:57:47,197 INFO L87 Difference]: Start difference. First operand 1660 states and 2141 transitions. Second operand has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 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) [2024-11-08 17:57:47,328 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 17:57:47,328 INFO L93 Difference]: Finished difference Result 1663 states and 1819 transitions. [2024-11-08 17:57:47,329 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-08 17:57:47,329 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 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 49 [2024-11-08 17:57:47,330 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 17:57:47,338 INFO L225 Difference]: With dead ends: 1663 [2024-11-08 17:57:47,338 INFO L226 Difference]: Without dead ends: 1663 [2024-11-08 17:57:47,339 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 17:57:47,339 INFO L432 NwaCegarLoop]: 1368 mSDtfsCounter, 323 mSDsluCounter, 1016 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 325 SdHoareTripleChecker+Valid, 2384 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-08 17:57:47,339 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [325 Valid, 2384 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-08 17:57:47,346 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1663 states. [2024-11-08 17:57:47,365 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1663 to 1284. [2024-11-08 17:57:47,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1284 states, 810 states have (on average 1.719753086419753) internal successors, (1393), 1274 states have internal predecessors, (1393), 7 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2024-11-08 17:57:47,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1284 states to 1284 states and 1407 transitions. [2024-11-08 17:57:47,378 INFO L78 Accepts]: Start accepts. Automaton has 1284 states and 1407 transitions. Word has length 49 [2024-11-08 17:57:47,378 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 17:57:47,379 INFO L471 AbstractCegarLoop]: Abstraction has 1284 states and 1407 transitions. [2024-11-08 17:57:47,379 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 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) [2024-11-08 17:57:47,379 INFO L276 IsEmpty]: Start isEmpty. Operand 1284 states and 1407 transitions. [2024-11-08 17:57:47,380 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2024-11-08 17:57:47,380 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 17:57:47,380 INFO L215 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] [2024-11-08 17:57:47,411 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a7b4d5e-c5d7-404b-8918-c4de76df1de6/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2024-11-08 17:57:47,584 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a7b4d5e-c5d7-404b-8918-c4de76df1de6/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:57:47,584 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 627 more)] === [2024-11-08 17:57:47,584 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:57:47,585 INFO L85 PathProgramCache]: Analyzing trace with hash 1221164139, now seen corresponding path program 1 times [2024-11-08 17:57:47,585 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-08 17:57:47,585 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1812852334] [2024-11-08 17:57:47,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:57:47,585 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:57:47,585 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a7b4d5e-c5d7-404b-8918-c4de76df1de6/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 17:57:47,586 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a7b4d5e-c5d7-404b-8918-c4de76df1de6/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 17:57:47,588 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a7b4d5e-c5d7-404b-8918-c4de76df1de6/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2024-11-08 17:57:47,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:57:47,830 INFO L255 TraceCheckSpWp]: Trace formula consists of 135 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-08 17:57:47,833 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 17:57:47,907 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:57:47,907 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-08 17:57:47,907 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-08 17:57:47,907 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1812852334] [2024-11-08 17:57:47,908 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1812852334] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 17:57:47,908 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 17:57:47,908 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-08 17:57:47,908 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [12629447] [2024-11-08 17:57:47,908 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 17:57:47,909 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-08 17:57:47,909 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-08 17:57:47,909 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-08 17:57:47,909 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-08 17:57:47,910 INFO L87 Difference]: Start difference. First operand 1284 states and 1407 transitions. Second operand has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 states have internal predecessors, (51), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:57:47,996 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 17:57:47,996 INFO L93 Difference]: Finished difference Result 1266 states and 1377 transitions. [2024-11-08 17:57:47,997 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-08 17:57:47,997 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 states have internal predecessors, (51), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 52 [2024-11-08 17:57:47,997 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 17:57:47,999 INFO L225 Difference]: With dead ends: 1266 [2024-11-08 17:57:47,999 INFO L226 Difference]: Without dead ends: 1266 [2024-11-08 17:57:48,000 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-08 17:57:48,001 INFO L432 NwaCegarLoop]: 1066 mSDtfsCounter, 27 mSDsluCounter, 2095 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 3161 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-08 17:57:48,001 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [27 Valid, 3161 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-08 17:57:48,003 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1266 states. [2024-11-08 17:57:48,030 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1266 to 1266. [2024-11-08 17:57:48,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1266 states, 792 states have (on average 1.720959595959596) internal successors, (1363), 1256 states have internal predecessors, (1363), 7 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2024-11-08 17:57:48,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1266 states to 1266 states and 1377 transitions. [2024-11-08 17:57:48,038 INFO L78 Accepts]: Start accepts. Automaton has 1266 states and 1377 transitions. Word has length 52 [2024-11-08 17:57:48,042 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 17:57:48,042 INFO L471 AbstractCegarLoop]: Abstraction has 1266 states and 1377 transitions. [2024-11-08 17:57:48,042 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 states have internal predecessors, (51), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:57:48,043 INFO L276 IsEmpty]: Start isEmpty. Operand 1266 states and 1377 transitions. [2024-11-08 17:57:48,043 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2024-11-08 17:57:48,043 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 17:57:48,043 INFO L215 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] [2024-11-08 17:57:48,071 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a7b4d5e-c5d7-404b-8918-c4de76df1de6/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2024-11-08 17:57:48,244 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a7b4d5e-c5d7-404b-8918-c4de76df1de6/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:57:48,244 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr71REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 627 more)] === [2024-11-08 17:57:48,244 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:57:48,245 INFO L85 PathProgramCache]: Analyzing trace with hash -1693277959, now seen corresponding path program 1 times [2024-11-08 17:57:48,245 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-08 17:57:48,245 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [242404370] [2024-11-08 17:57:48,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:57:48,246 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:57:48,246 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a7b4d5e-c5d7-404b-8918-c4de76df1de6/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 17:57:48,247 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a7b4d5e-c5d7-404b-8918-c4de76df1de6/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 17:57:48,249 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a7b4d5e-c5d7-404b-8918-c4de76df1de6/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2024-11-08 17:57:48,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:57:48,559 INFO L255 TraceCheckSpWp]: Trace formula consists of 255 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-08 17:57:48,561 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 17:57:48,648 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:57:48,651 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-08 17:57:48,652 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-08 17:57:48,652 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [242404370] [2024-11-08 17:57:48,652 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [242404370] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 17:57:48,652 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 17:57:48,652 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-08 17:57:48,652 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1999461169] [2024-11-08 17:57:48,653 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 17:57:48,653 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-08 17:57:48,653 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-08 17:57:48,654 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-08 17:57:48,654 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-08 17:57:48,655 INFO L87 Difference]: Start difference. First operand 1266 states and 1377 transitions. Second operand has 4 states, 4 states have (on average 13.5) 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) [2024-11-08 17:57:48,768 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 17:57:48,769 INFO L93 Difference]: Finished difference Result 1254 states and 1357 transitions. [2024-11-08 17:57:48,770 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-08 17:57:48,771 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.5) 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 [2024-11-08 17:57:48,771 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 17:57:48,774 INFO L225 Difference]: With dead ends: 1254 [2024-11-08 17:57:48,774 INFO L226 Difference]: Without dead ends: 1254 [2024-11-08 17:57:48,775 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 51 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-08 17:57:48,776 INFO L432 NwaCegarLoop]: 1062 mSDtfsCounter, 21 mSDsluCounter, 2093 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 3155 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-08 17:57:48,776 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 3155 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-08 17:57:48,778 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1254 states. [2024-11-08 17:57:48,792 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1254 to 1254. [2024-11-08 17:57:48,794 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1254 states, 780 states have (on average 1.721794871794872) internal successors, (1343), 1244 states have internal predecessors, (1343), 7 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2024-11-08 17:57:48,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1254 states to 1254 states and 1357 transitions. [2024-11-08 17:57:48,796 INFO L78 Accepts]: Start accepts. Automaton has 1254 states and 1357 transitions. Word has length 54 [2024-11-08 17:57:48,797 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 17:57:48,797 INFO L471 AbstractCegarLoop]: Abstraction has 1254 states and 1357 transitions. [2024-11-08 17:57:48,797 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.5) 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) [2024-11-08 17:57:48,797 INFO L276 IsEmpty]: Start isEmpty. Operand 1254 states and 1357 transitions. [2024-11-08 17:57:48,798 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2024-11-08 17:57:48,798 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 17:57:48,798 INFO L215 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] [2024-11-08 17:57:48,829 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a7b4d5e-c5d7-404b-8918-c4de76df1de6/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Ended with exit code 0 [2024-11-08 17:57:48,999 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a7b4d5e-c5d7-404b-8918-c4de76df1de6/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:57:48,999 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 627 more)] === [2024-11-08 17:57:48,999 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:57:48,999 INFO L85 PathProgramCache]: Analyzing trace with hash -993669321, now seen corresponding path program 1 times [2024-11-08 17:57:49,000 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-08 17:57:49,000 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [560346743] [2024-11-08 17:57:49,000 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:57:49,000 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:57:49,000 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a7b4d5e-c5d7-404b-8918-c4de76df1de6/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 17:57:49,002 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a7b4d5e-c5d7-404b-8918-c4de76df1de6/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 17:57:49,003 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a7b4d5e-c5d7-404b-8918-c4de76df1de6/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2024-11-08 17:57:49,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:57:49,276 INFO L255 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-08 17:57:49,280 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 17:57:49,299 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-08 17:57:49,300 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-08 17:57:49,301 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-08 17:57:49,305 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 [2024-11-08 17:57:49,394 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-08 17:57:49,395 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 [2024-11-08 17:57:49,457 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:57:49,458 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-08 17:57:49,458 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-08 17:57:49,458 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [560346743] [2024-11-08 17:57:49,458 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [560346743] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 17:57:49,458 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 17:57:49,459 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-08 17:57:49,459 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [585943830] [2024-11-08 17:57:49,459 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 17:57:49,459 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-08 17:57:49,459 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-08 17:57:49,460 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-08 17:57:49,460 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-11-08 17:57:49,460 INFO L87 Difference]: Start difference. First operand 1254 states and 1357 transitions. Second operand has 6 states, 6 states have (on average 9.833333333333334) internal successors, (59), 6 states have internal predecessors, (59), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:57:50,086 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 17:57:50,086 INFO L93 Difference]: Finished difference Result 1924 states and 2076 transitions. [2024-11-08 17:57:50,087 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-08 17:57:50,087 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.833333333333334) internal successors, (59), 6 states have internal predecessors, (59), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 60 [2024-11-08 17:57:50,087 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 17:57:50,091 INFO L225 Difference]: With dead ends: 1924 [2024-11-08 17:57:50,091 INFO L226 Difference]: Without dead ends: 1921 [2024-11-08 17:57:50,091 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 55 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2024-11-08 17:57:50,092 INFO L432 NwaCegarLoop]: 1268 mSDtfsCounter, 2153 mSDsluCounter, 3313 mSDsCounter, 0 mSdLazyCounter, 140 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2161 SdHoareTripleChecker+Valid, 4581 SdHoareTripleChecker+Invalid, 144 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 140 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-08 17:57:50,092 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2161 Valid, 4581 Invalid, 144 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 140 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-08 17:57:50,095 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1921 states. [2024-11-08 17:57:50,108 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1921 to 1201. [2024-11-08 17:57:50,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1201 states, 728 states have (on average 1.771978021978022) internal successors, (1290), 1192 states have internal predecessors, (1290), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-11-08 17:57:50,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1201 states to 1201 states and 1302 transitions. [2024-11-08 17:57:50,110 INFO L78 Accepts]: Start accepts. Automaton has 1201 states and 1302 transitions. Word has length 60 [2024-11-08 17:57:50,110 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 17:57:50,110 INFO L471 AbstractCegarLoop]: Abstraction has 1201 states and 1302 transitions. [2024-11-08 17:57:50,110 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.833333333333334) internal successors, (59), 6 states have internal predecessors, (59), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 17:57:50,111 INFO L276 IsEmpty]: Start isEmpty. Operand 1201 states and 1302 transitions. [2024-11-08 17:57:50,111 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2024-11-08 17:57:50,111 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 17:57:50,111 INFO L215 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] [2024-11-08 17:57:50,134 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a7b4d5e-c5d7-404b-8918-c4de76df1de6/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2024-11-08 17:57:50,311 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a7b4d5e-c5d7-404b-8918-c4de76df1de6/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:57:50,312 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr71REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 627 more)] === [2024-11-08 17:57:50,312 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:57:50,312 INFO L85 PathProgramCache]: Analyzing trace with hash 817264941, now seen corresponding path program 1 times [2024-11-08 17:57:50,313 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-08 17:57:50,313 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1789490597] [2024-11-08 17:57:50,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:57:50,313 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:57:50,313 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a7b4d5e-c5d7-404b-8918-c4de76df1de6/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 17:57:50,314 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a7b4d5e-c5d7-404b-8918-c4de76df1de6/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 17:57:50,316 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a7b4d5e-c5d7-404b-8918-c4de76df1de6/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2024-11-08 17:57:50,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:57:50,647 INFO L255 TraceCheckSpWp]: Trace formula consists of 279 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-08 17:57:50,650 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 17:57:50,663 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 5 [2024-11-08 17:57:51,407 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-08 17:57:51,408 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 [2024-11-08 17:57:51,432 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2024-11-08 17:57:51,433 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 [2024-11-08 17:57:51,437 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:57:51,437 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-08 17:57:51,437 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-08 17:57:51,437 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1789490597] [2024-11-08 17:57:51,438 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1789490597] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 17:57:51,438 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 17:57:51,438 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-08 17:57:51,438 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [492508876] [2024-11-08 17:57:51,439 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 17:57:51,439 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-08 17:57:51,442 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-08 17:57:51,443 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-08 17:57:51,443 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-08 17:57:51,443 INFO L87 Difference]: Start difference. First operand 1201 states and 1302 transitions. Second operand has 5 states, 4 states have (on average 15.5) internal successors, (62), 5 states have internal predecessors, (62), 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) [2024-11-08 17:57:56,133 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 17:57:56,134 INFO L93 Difference]: Finished difference Result 1536 states and 1665 transitions. [2024-11-08 17:57:56,134 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-08 17:57:56,134 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 15.5) internal successors, (62), 5 states have internal predecessors, (62), 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 62 [2024-11-08 17:57:56,135 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 17:57:56,138 INFO L225 Difference]: With dead ends: 1536 [2024-11-08 17:57:56,138 INFO L226 Difference]: Without dead ends: 1536 [2024-11-08 17:57:56,138 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2024-11-08 17:57:56,141 INFO L432 NwaCegarLoop]: 521 mSDtfsCounter, 1800 mSDsluCounter, 483 mSDsCounter, 0 mSdLazyCounter, 1418 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1805 SdHoareTripleChecker+Valid, 1004 SdHoareTripleChecker+Invalid, 1466 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 1418 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.6s IncrementalHoareTripleChecker+Time [2024-11-08 17:57:56,141 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1805 Valid, 1004 Invalid, 1466 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [48 Valid, 1418 Invalid, 0 Unknown, 0 Unchecked, 4.6s Time] [2024-11-08 17:57:56,144 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1536 states. [2024-11-08 17:57:56,158 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1536 to 1126. [2024-11-08 17:57:56,159 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1126 states, 691 states have (on average 1.7047756874095514) internal successors, (1178), 1117 states have internal predecessors, (1178), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-11-08 17:57:56,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1126 states to 1126 states and 1190 transitions. [2024-11-08 17:57:56,162 INFO L78 Accepts]: Start accepts. Automaton has 1126 states and 1190 transitions. Word has length 62 [2024-11-08 17:57:56,164 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 17:57:56,164 INFO L471 AbstractCegarLoop]: Abstraction has 1126 states and 1190 transitions. [2024-11-08 17:57:56,165 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 15.5) internal successors, (62), 5 states have internal predecessors, (62), 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) [2024-11-08 17:57:56,165 INFO L276 IsEmpty]: Start isEmpty. Operand 1126 states and 1190 transitions. [2024-11-08 17:57:56,165 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2024-11-08 17:57:56,166 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 17:57:56,166 INFO L215 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, 1, 1] [2024-11-08 17:57:56,200 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a7b4d5e-c5d7-404b-8918-c4de76df1de6/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2024-11-08 17:57:56,366 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a7b4d5e-c5d7-404b-8918-c4de76df1de6/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:57:56,366 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr76REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 627 more)] === [2024-11-08 17:57:56,367 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:57:56,367 INFO L85 PathProgramCache]: Analyzing trace with hash -1492099519, now seen corresponding path program 1 times [2024-11-08 17:57:56,368 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-08 17:57:56,368 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2058598592] [2024-11-08 17:57:56,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:57:56,368 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:57:56,368 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a7b4d5e-c5d7-404b-8918-c4de76df1de6/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 17:57:56,369 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a7b4d5e-c5d7-404b-8918-c4de76df1de6/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 17:57:56,370 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a7b4d5e-c5d7-404b-8918-c4de76df1de6/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2024-11-08 17:57:56,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:57:56,758 INFO L255 TraceCheckSpWp]: Trace formula consists of 306 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-08 17:57:56,762 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 17:57:56,771 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 [2024-11-08 17:57:56,793 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 [2024-11-08 17:57:56,833 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 [2024-11-08 17:57:56,850 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:57:56,850 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-08 17:57:56,851 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-08 17:57:56,851 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2058598592] [2024-11-08 17:57:56,851 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2058598592] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 17:57:56,851 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 17:57:56,851 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-08 17:57:56,851 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [789673412] [2024-11-08 17:57:56,852 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 17:57:56,852 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-08 17:57:56,852 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-08 17:57:56,853 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-08 17:57:56,853 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-08 17:57:56,853 INFO L87 Difference]: Start difference. First operand 1126 states and 1190 transitions. Second operand has 5 states, 4 states have (on average 16.75) internal successors, (67), 5 states have internal predecessors, (67), 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) [2024-11-08 17:58:00,619 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 17:58:00,619 INFO L93 Difference]: Finished difference Result 1125 states and 1189 transitions. [2024-11-08 17:58:00,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-08 17:58:00,620 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 16.75) internal successors, (67), 5 states have internal predecessors, (67), 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 67 [2024-11-08 17:58:00,620 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 17:58:00,623 INFO L225 Difference]: With dead ends: 1125 [2024-11-08 17:58:00,623 INFO L226 Difference]: Without dead ends: 1125 [2024-11-08 17:58:00,623 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 63 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-08 17:58:00,624 INFO L432 NwaCegarLoop]: 1035 mSDtfsCounter, 2 mSDsluCounter, 1645 mSDsCounter, 0 mSdLazyCounter, 1467 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 2680 SdHoareTripleChecker+Invalid, 1468 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1467 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.7s IncrementalHoareTripleChecker+Time [2024-11-08 17:58:00,624 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 2680 Invalid, 1468 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1467 Invalid, 0 Unknown, 0 Unchecked, 3.7s Time] [2024-11-08 17:58:00,627 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1125 states. [2024-11-08 17:58:00,638 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1125 to 1125. [2024-11-08 17:58:00,639 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1125 states, 691 states have (on average 1.703328509406657) internal successors, (1177), 1116 states have internal predecessors, (1177), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-11-08 17:58:00,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1125 states to 1125 states and 1189 transitions. [2024-11-08 17:58:00,641 INFO L78 Accepts]: Start accepts. Automaton has 1125 states and 1189 transitions. Word has length 67 [2024-11-08 17:58:00,642 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 17:58:00,642 INFO L471 AbstractCegarLoop]: Abstraction has 1125 states and 1189 transitions. [2024-11-08 17:58:00,642 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 16.75) internal successors, (67), 5 states have internal predecessors, (67), 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) [2024-11-08 17:58:00,642 INFO L276 IsEmpty]: Start isEmpty. Operand 1125 states and 1189 transitions. [2024-11-08 17:58:00,643 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2024-11-08 17:58:00,643 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 17:58:00,643 INFO L215 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, 1, 1] [2024-11-08 17:58:00,676 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a7b4d5e-c5d7-404b-8918-c4de76df1de6/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2024-11-08 17:58:00,844 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a7b4d5e-c5d7-404b-8918-c4de76df1de6/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:58:00,845 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr77REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 627 more)] === [2024-11-08 17:58:00,845 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:58:00,845 INFO L85 PathProgramCache]: Analyzing trace with hash -1492099518, now seen corresponding path program 1 times [2024-11-08 17:58:00,846 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-08 17:58:00,847 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1505819162] [2024-11-08 17:58:00,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:58:00,847 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:58:00,848 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a7b4d5e-c5d7-404b-8918-c4de76df1de6/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 17:58:00,850 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a7b4d5e-c5d7-404b-8918-c4de76df1de6/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 17:58:00,852 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a7b4d5e-c5d7-404b-8918-c4de76df1de6/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2024-11-08 17:58:01,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:58:01,243 INFO L255 TraceCheckSpWp]: Trace formula consists of 306 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-11-08 17:58:01,257 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 17:58:01,271 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 [2024-11-08 17:58:01,298 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 [2024-11-08 17:58:01,309 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 [2024-11-08 17:58:01,375 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 21 treesize of output 9 [2024-11-08 17:58:01,404 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:58:01,404 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-08 17:58:01,404 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-08 17:58:01,405 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1505819162] [2024-11-08 17:58:01,405 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1505819162] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 17:58:01,405 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 17:58:01,405 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-08 17:58:01,405 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1844277501] [2024-11-08 17:58:01,406 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 17:58:01,406 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-08 17:58:01,406 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-08 17:58:01,407 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-08 17:58:01,407 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-08 17:58:01,407 INFO L87 Difference]: Start difference. First operand 1125 states and 1189 transitions. Second operand has 5 states, 4 states have (on average 16.75) internal successors, (67), 5 states have internal predecessors, (67), 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) [2024-11-08 17:58:06,128 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 17:58:06,128 INFO L93 Difference]: Finished difference Result 1124 states and 1188 transitions. [2024-11-08 17:58:06,129 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-08 17:58:06,129 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 16.75) internal successors, (67), 5 states have internal predecessors, (67), 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 67 [2024-11-08 17:58:06,129 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 17:58:06,131 INFO L225 Difference]: With dead ends: 1124 [2024-11-08 17:58:06,131 INFO L226 Difference]: Without dead ends: 1124 [2024-11-08 17:58:06,131 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 63 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-08 17:58:06,132 INFO L432 NwaCegarLoop]: 1035 mSDtfsCounter, 1 mSDsluCounter, 1652 mSDsCounter, 0 mSdLazyCounter, 1457 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 2687 SdHoareTripleChecker+Invalid, 1458 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1457 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.6s IncrementalHoareTripleChecker+Time [2024-11-08 17:58:06,132 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 2687 Invalid, 1458 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1457 Invalid, 0 Unknown, 0 Unchecked, 4.6s Time] [2024-11-08 17:58:06,134 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1124 states. [2024-11-08 17:58:06,144 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1124 to 1124. [2024-11-08 17:58:06,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1124 states, 690 states have (on average 1.7043478260869565) internal successors, (1176), 1115 states have internal predecessors, (1176), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-11-08 17:58:06,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1124 states to 1124 states and 1188 transitions. [2024-11-08 17:58:06,148 INFO L78 Accepts]: Start accepts. Automaton has 1124 states and 1188 transitions. Word has length 67 [2024-11-08 17:58:06,148 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 17:58:06,148 INFO L471 AbstractCegarLoop]: Abstraction has 1124 states and 1188 transitions. [2024-11-08 17:58:06,148 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 16.75) internal successors, (67), 5 states have internal predecessors, (67), 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) [2024-11-08 17:58:06,149 INFO L276 IsEmpty]: Start isEmpty. Operand 1124 states and 1188 transitions. [2024-11-08 17:58:06,149 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2024-11-08 17:58:06,150 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 17:58:06,150 INFO L215 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:58:06,183 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a7b4d5e-c5d7-404b-8918-c4de76df1de6/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2024-11-08 17:58:06,350 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a7b4d5e-c5d7-404b-8918-c4de76df1de6/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:58:06,351 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr80REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 627 more)] === [2024-11-08 17:58:06,351 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:58:06,351 INFO L85 PathProgramCache]: Analyzing trace with hash -980383032, now seen corresponding path program 1 times [2024-11-08 17:58:06,352 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-08 17:58:06,352 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [598259282] [2024-11-08 17:58:06,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:58:06,352 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:58:06,352 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a7b4d5e-c5d7-404b-8918-c4de76df1de6/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 17:58:06,353 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a7b4d5e-c5d7-404b-8918-c4de76df1de6/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 17:58:06,354 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a7b4d5e-c5d7-404b-8918-c4de76df1de6/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2024-11-08 17:58:06,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:58:06,714 INFO L255 TraceCheckSpWp]: Trace formula consists of 332 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-08 17:58:06,717 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 17:58:06,733 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 [2024-11-08 17:58:06,832 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 [2024-11-08 17:58:06,849 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:58:06,850 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-08 17:58:06,850 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-08 17:58:06,850 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [598259282] [2024-11-08 17:58:06,850 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [598259282] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 17:58:06,850 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 17:58:06,850 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-08 17:58:06,850 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [495667622] [2024-11-08 17:58:06,850 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 17:58:06,851 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-08 17:58:06,851 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-08 17:58:06,852 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-08 17:58:06,852 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-11-08 17:58:06,852 INFO L87 Difference]: Start difference. First operand 1124 states and 1188 transitions. Second operand has 7 states, 5 states have (on average 14.6) internal successors, (73), 6 states have internal predecessors, (73), 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) [2024-11-08 17:58:11,276 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 17:58:11,276 INFO L93 Difference]: Finished difference Result 1136 states and 1203 transitions. [2024-11-08 17:58:11,276 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-08 17:58:11,276 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 5 states have (on average 14.6) internal successors, (73), 6 states have internal predecessors, (73), 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 75 [2024-11-08 17:58:11,277 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 17:58:11,281 INFO L225 Difference]: With dead ends: 1136 [2024-11-08 17:58:11,281 INFO L226 Difference]: Without dead ends: 1136 [2024-11-08 17:58:11,282 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 69 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-11-08 17:58:11,283 INFO L432 NwaCegarLoop]: 1021 mSDtfsCounter, 12 mSDsluCounter, 2698 mSDsCounter, 0 mSdLazyCounter, 1468 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 3719 SdHoareTripleChecker+Invalid, 1474 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 1468 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.3s IncrementalHoareTripleChecker+Time [2024-11-08 17:58:11,283 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 3719 Invalid, 1474 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 1468 Invalid, 0 Unknown, 0 Unchecked, 4.3s Time] [2024-11-08 17:58:11,285 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1136 states. [2024-11-08 17:58:11,297 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1136 to 1130. [2024-11-08 17:58:11,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1130 states, 695 states have (on average 1.702158273381295) internal successors, (1183), 1120 states have internal predecessors, (1183), 6 states have call successors, (6), 2 states have call predecessors, (6), 3 states have return successors, (9), 7 states have call predecessors, (9), 6 states have call successors, (9) [2024-11-08 17:58:11,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1130 states to 1130 states and 1198 transitions. [2024-11-08 17:58:11,299 INFO L78 Accepts]: Start accepts. Automaton has 1130 states and 1198 transitions. Word has length 75 [2024-11-08 17:58:11,299 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 17:58:11,299 INFO L471 AbstractCegarLoop]: Abstraction has 1130 states and 1198 transitions. [2024-11-08 17:58:11,300 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 5 states have (on average 14.6) internal successors, (73), 6 states have internal predecessors, (73), 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) [2024-11-08 17:58:11,300 INFO L276 IsEmpty]: Start isEmpty. Operand 1130 states and 1198 transitions. [2024-11-08 17:58:11,300 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2024-11-08 17:58:11,301 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 17:58:11,301 INFO L215 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:58:11,323 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a7b4d5e-c5d7-404b-8918-c4de76df1de6/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Forceful destruction successful, exit code 0 [2024-11-08 17:58:11,501 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a7b4d5e-c5d7-404b-8918-c4de76df1de6/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:58:11,502 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr81REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 627 more)] === [2024-11-08 17:58:11,502 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:58:11,502 INFO L85 PathProgramCache]: Analyzing trace with hash -980383031, now seen corresponding path program 1 times [2024-11-08 17:58:11,502 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-08 17:58:11,502 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [673735717] [2024-11-08 17:58:11,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:58:11,503 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:58:11,503 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a7b4d5e-c5d7-404b-8918-c4de76df1de6/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 17:58:11,504 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a7b4d5e-c5d7-404b-8918-c4de76df1de6/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 17:58:11,505 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a7b4d5e-c5d7-404b-8918-c4de76df1de6/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2024-11-08 17:58:11,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:58:11,926 INFO L255 TraceCheckSpWp]: Trace formula consists of 332 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-08 17:58:11,929 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 17:58:11,963 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:58:11,964 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-08 17:58:11,964 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-08 17:58:11,964 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [673735717] [2024-11-08 17:58:11,964 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [673735717] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 17:58:11,965 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 17:58:11,965 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-08 17:58:11,965 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [381922261] [2024-11-08 17:58:11,965 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 17:58:11,966 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-08 17:58:11,966 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-08 17:58:11,966 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-08 17:58:11,967 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-08 17:58:11,967 INFO L87 Difference]: Start difference. First operand 1130 states and 1198 transitions. Second operand has 4 states, 4 states have (on average 18.25) internal successors, (73), 4 states have internal predecessors, (73), 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) [2024-11-08 17:58:12,029 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 17:58:12,030 INFO L93 Difference]: Finished difference Result 1127 states and 1192 transitions. [2024-11-08 17:58:12,031 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-08 17:58:12,031 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 18.25) internal successors, (73), 4 states have internal predecessors, (73), 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 75 [2024-11-08 17:58:12,031 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 17:58:12,037 INFO L225 Difference]: With dead ends: 1127 [2024-11-08 17:58:12,037 INFO L226 Difference]: Without dead ends: 1127 [2024-11-08 17:58:12,037 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 72 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-08 17:58:12,039 INFO L432 NwaCegarLoop]: 1035 mSDtfsCounter, 0 mSDsluCounter, 2065 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 3100 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-08 17:58:12,040 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 3100 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-08 17:58:12,042 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1127 states. [2024-11-08 17:58:12,059 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1127 to 1127. [2024-11-08 17:58:12,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1127 states, 692 states have (on average 1.703757225433526) internal successors, (1179), 1118 states have internal predecessors, (1179), 6 states have call successors, (6), 2 states have call predecessors, (6), 3 states have return successors, (7), 6 states have call predecessors, (7), 6 states have call successors, (7) [2024-11-08 17:58:12,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1127 states to 1127 states and 1192 transitions. [2024-11-08 17:58:12,064 INFO L78 Accepts]: Start accepts. Automaton has 1127 states and 1192 transitions. Word has length 75 [2024-11-08 17:58:12,065 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 17:58:12,065 INFO L471 AbstractCegarLoop]: Abstraction has 1127 states and 1192 transitions. [2024-11-08 17:58:12,065 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.25) internal successors, (73), 4 states have internal predecessors, (73), 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) [2024-11-08 17:58:12,065 INFO L276 IsEmpty]: Start isEmpty. Operand 1127 states and 1192 transitions. [2024-11-08 17:58:12,066 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2024-11-08 17:58:12,066 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 17:58:12,066 INFO L215 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:58:12,097 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a7b4d5e-c5d7-404b-8918-c4de76df1de6/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Ended with exit code 0 [2024-11-08 17:58:12,270 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a7b4d5e-c5d7-404b-8918-c4de76df1de6/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:58:12,270 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr80REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 627 more)] === [2024-11-08 17:58:12,270 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:58:12,271 INFO L85 PathProgramCache]: Analyzing trace with hash 428305549, now seen corresponding path program 1 times [2024-11-08 17:58:12,271 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-08 17:58:12,271 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1520376253] [2024-11-08 17:58:12,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:58:12,271 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:58:12,272 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a7b4d5e-c5d7-404b-8918-c4de76df1de6/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 17:58:12,273 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a7b4d5e-c5d7-404b-8918-c4de76df1de6/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 17:58:12,274 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a7b4d5e-c5d7-404b-8918-c4de76df1de6/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2024-11-08 17:58:12,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:58:12,692 INFO L255 TraceCheckSpWp]: Trace formula consists of 343 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-08 17:58:12,695 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 17:58:12,740 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:58:12,741 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 17:58:12,855 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:58:12,856 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-08 17:58:12,856 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1520376253] [2024-11-08 17:58:12,856 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1520376253] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 17:58:12,856 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-08 17:58:12,856 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2024-11-08 17:58:12,857 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [431290436] [2024-11-08 17:58:12,857 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-08 17:58:12,857 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-08 17:58:12,858 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-08 17:58:12,858 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-08 17:58:12,859 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2024-11-08 17:58:12,859 INFO L87 Difference]: Start difference. First operand 1127 states and 1192 transitions. Second operand has 8 states, 8 states have (on average 9.75) internal successors, (78), 8 states have internal predecessors, (78), 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) [2024-11-08 17:58:13,085 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 17:58:13,086 INFO L93 Difference]: Finished difference Result 1139 states and 1209 transitions. [2024-11-08 17:58:13,087 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-08 17:58:13,087 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 9.75) internal successors, (78), 8 states have internal predecessors, (78), 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 76 [2024-11-08 17:58:13,087 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 17:58:13,090 INFO L225 Difference]: With dead ends: 1139 [2024-11-08 17:58:13,090 INFO L226 Difference]: Without dead ends: 1139 [2024-11-08 17:58:13,091 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 153 GetRequests, 144 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=44, Invalid=66, Unknown=0, NotChecked=0, Total=110 [2024-11-08 17:58:13,092 INFO L432 NwaCegarLoop]: 1035 mSDtfsCounter, 5 mSDsluCounter, 4126 mSDsCounter, 0 mSdLazyCounter, 57 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 5161 SdHoareTripleChecker+Invalid, 62 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 57 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-08 17:58:13,092 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 5161 Invalid, 62 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 57 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-08 17:58:13,094 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1139 states. [2024-11-08 17:58:13,108 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1139 to 1137. [2024-11-08 17:58:13,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1137 states, 701 states have (on average 1.703281027104137) internal successors, (1194), 1127 states have internal predecessors, (1194), 6 states have call successors, (6), 3 states have call predecessors, (6), 4 states have return successors, (7), 6 states have call predecessors, (7), 6 states have call successors, (7) [2024-11-08 17:58:13,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1137 states to 1137 states and 1207 transitions. [2024-11-08 17:58:13,113 INFO L78 Accepts]: Start accepts. Automaton has 1137 states and 1207 transitions. Word has length 76 [2024-11-08 17:58:13,113 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 17:58:13,113 INFO L471 AbstractCegarLoop]: Abstraction has 1137 states and 1207 transitions. [2024-11-08 17:58:13,114 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.75) internal successors, (78), 8 states have internal predecessors, (78), 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) [2024-11-08 17:58:13,114 INFO L276 IsEmpty]: Start isEmpty. Operand 1137 states and 1207 transitions. [2024-11-08 17:58:13,115 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2024-11-08 17:58:13,115 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 17:58:13,115 INFO L215 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:58:13,145 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a7b4d5e-c5d7-404b-8918-c4de76df1de6/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Ended with exit code 0 [2024-11-08 17:58:13,315 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a7b4d5e-c5d7-404b-8918-c4de76df1de6/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:58:13,316 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr80REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 627 more)] === [2024-11-08 17:58:13,316 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:58:13,316 INFO L85 PathProgramCache]: Analyzing trace with hash 2099074056, now seen corresponding path program 2 times [2024-11-08 17:58:13,317 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-08 17:58:13,317 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [431522797] [2024-11-08 17:58:13,317 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-08 17:58:13,317 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:58:13,317 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a7b4d5e-c5d7-404b-8918-c4de76df1de6/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 17:58:13,318 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a7b4d5e-c5d7-404b-8918-c4de76df1de6/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 17:58:13,320 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a7b4d5e-c5d7-404b-8918-c4de76df1de6/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2024-11-08 17:58:36,988 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-08 17:58:36,988 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 17:58:37,006 INFO L255 TraceCheckSpWp]: Trace formula consists of 376 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-11-08 17:58:37,009 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 17:58:37,187 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2024-11-08 17:58:37,188 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 [2024-11-08 17:58:37,212 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 [2024-11-08 17:58:37,523 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-08 17:58:37,523 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 [2024-11-08 17:58:37,592 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 [2024-11-08 17:58:37,617 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-08 17:58:37,617 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 17:58:37,740 INFO L349 Elim1Store]: treesize reduction 7, result has 63.2 percent of original size [2024-11-08 17:58:37,741 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 [2024-11-08 17:58:37,751 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1445 (Array (_ BitVec 32) (_ BitVec 32)))) (= (select (select (store |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_main_#t~mem36#1.base| v_ArrVal_1445) |c_ULTIMATE.start_main_~user~0#1.base|) (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|)) |c_ULTIMATE.start_main_#t~mem36#1.base|)) is different from false [2024-11-08 17:58:37,753 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-08 17:58:37,754 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [431522797] [2024-11-08 17:58:37,754 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [431522797] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 17:58:37,754 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1901410747] [2024-11-08 17:58:37,754 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-08 17:58:37,754 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-08 17:58:37,754 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a7b4d5e-c5d7-404b-8918-c4de76df1de6/bin/uautomizer-verify-jihMAELWvX/cvc4 [2024-11-08 17:58:37,756 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a7b4d5e-c5d7-404b-8918-c4de76df1de6/bin/uautomizer-verify-jihMAELWvX/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-08 17:58:37,757 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a7b4d5e-c5d7-404b-8918-c4de76df1de6/bin/uautomizer-verify-jihMAELWvX/cvc4 --incremental --print-success --lang smt (29)] Waiting until timeout for monitored process [2024-11-08 17:58:39,510 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-08 17:58:39,510 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 17:58:39,551 INFO L255 TraceCheckSpWp]: Trace formula consists of 376 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-08 17:58:39,553 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 17:58:39,747 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:58:39,747 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 17:58:40,120 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:58:40,120 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1901410747] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 17:58:40,120 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 17:58:40,121 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 8, 8] total 24 [2024-11-08 17:58:40,121 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1323403004] [2024-11-08 17:58:40,121 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 17:58:40,122 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2024-11-08 17:58:40,122 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-08 17:58:40,123 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2024-11-08 17:58:40,123 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=513, Unknown=1, NotChecked=46, Total=650 [2024-11-08 17:58:40,123 INFO L87 Difference]: Start difference. First operand 1137 states and 1207 transitions. Second operand has 24 states, 23 states have (on average 6.217391304347826) internal successors, (143), 23 states have internal predecessors, (143), 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) [2024-11-08 17:58:54,288 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 17:58:54,288 INFO L93 Difference]: Finished difference Result 1526 states and 1631 transitions. [2024-11-08 17:58:54,288 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2024-11-08 17:58:54,289 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 23 states have (on average 6.217391304347826) internal successors, (143), 23 states have internal predecessors, (143), 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 79 [2024-11-08 17:58:54,289 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 17:58:54,292 INFO L225 Difference]: With dead ends: 1526 [2024-11-08 17:58:54,293 INFO L226 Difference]: Without dead ends: 1522 [2024-11-08 17:58:54,293 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 265 GetRequests, 214 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 472 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=413, Invalid=2242, Unknown=1, NotChecked=100, Total=2756 [2024-11-08 17:58:54,294 INFO L432 NwaCegarLoop]: 675 mSDtfsCounter, 774 mSDsluCounter, 7779 mSDsCounter, 0 mSdLazyCounter, 6037 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 780 SdHoareTripleChecker+Valid, 8454 SdHoareTripleChecker+Invalid, 6060 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 6037 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.8s IncrementalHoareTripleChecker+Time [2024-11-08 17:58:54,294 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [780 Valid, 8454 Invalid, 6060 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [23 Valid, 6037 Invalid, 0 Unknown, 0 Unchecked, 12.8s Time] [2024-11-08 17:58:54,296 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1522 states. [2024-11-08 17:58:54,310 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1522 to 1145. [2024-11-08 17:58:54,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1145 states, 710 states have (on average 1.6971830985915493) internal successors, (1205), 1135 states have internal predecessors, (1205), 6 states have call successors, (6), 3 states have call predecessors, (6), 4 states have return successors, (7), 6 states have call predecessors, (7), 6 states have call successors, (7) [2024-11-08 17:58:54,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1145 states to 1145 states and 1218 transitions. [2024-11-08 17:58:54,313 INFO L78 Accepts]: Start accepts. Automaton has 1145 states and 1218 transitions. Word has length 79 [2024-11-08 17:58:54,313 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 17:58:54,314 INFO L471 AbstractCegarLoop]: Abstraction has 1145 states and 1218 transitions. [2024-11-08 17:58:54,314 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 23 states have (on average 6.217391304347826) internal successors, (143), 23 states have internal predecessors, (143), 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) [2024-11-08 17:58:54,314 INFO L276 IsEmpty]: Start isEmpty. Operand 1145 states and 1218 transitions. [2024-11-08 17:58:54,315 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2024-11-08 17:58:54,315 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 17:58:54,315 INFO L215 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:58:54,360 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a7b4d5e-c5d7-404b-8918-c4de76df1de6/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Ended with exit code 0 [2024-11-08 17:58:54,522 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a7b4d5e-c5d7-404b-8918-c4de76df1de6/bin/uautomizer-verify-jihMAELWvX/cvc4 --incremental --print-success --lang smt (29)] Forceful destruction successful, exit code 0 [2024-11-08 17:58:54,716 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a7b4d5e-c5d7-404b-8918-c4de76df1de6/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,29 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a7b4d5e-c5d7-404b-8918-c4de76df1de6/bin/uautomizer-verify-jihMAELWvX/cvc4 --incremental --print-success --lang smt [2024-11-08 17:58:54,716 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr81REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 627 more)] === [2024-11-08 17:58:54,716 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:58:54,716 INFO L85 PathProgramCache]: Analyzing trace with hash 680334825, now seen corresponding path program 1 times [2024-11-08 17:58:54,717 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-08 17:58:54,717 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2024369634] [2024-11-08 17:58:54,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 17:58:54,717 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:58:54,718 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a7b4d5e-c5d7-404b-8918-c4de76df1de6/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 17:58:54,719 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a7b4d5e-c5d7-404b-8918-c4de76df1de6/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 17:58:54,720 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a7b4d5e-c5d7-404b-8918-c4de76df1de6/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2024-11-08 17:58:55,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 17:58:55,117 INFO L255 TraceCheckSpWp]: Trace formula consists of 442 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-08 17:58:55,119 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 17:58:55,332 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:58:55,332 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 17:58:56,112 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:58:56,113 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-08 17:58:56,113 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2024369634] [2024-11-08 17:58:56,113 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2024369634] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 17:58:56,113 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-08 17:58:56,113 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 26 [2024-11-08 17:58:56,114 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2060596744] [2024-11-08 17:58:56,114 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-08 17:58:56,114 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2024-11-08 17:58:56,114 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-08 17:58:56,115 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2024-11-08 17:58:56,115 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=193, Invalid=457, Unknown=0, NotChecked=0, Total=650 [2024-11-08 17:58:56,116 INFO L87 Difference]: Start difference. First operand 1145 states and 1218 transitions. Second operand has 26 states, 26 states have (on average 3.6923076923076925) internal successors, (96), 26 states have internal predecessors, (96), 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) [2024-11-08 17:58:58,681 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 17:58:58,681 INFO L93 Difference]: Finished difference Result 1169 states and 1257 transitions. [2024-11-08 17:58:58,681 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2024-11-08 17:58:58,682 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 3.6923076923076925) internal successors, (96), 26 states have internal predecessors, (96), 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 85 [2024-11-08 17:58:58,682 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 17:58:58,685 INFO L225 Difference]: With dead ends: 1169 [2024-11-08 17:58:58,685 INFO L226 Difference]: Without dead ends: 1163 [2024-11-08 17:58:58,686 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 189 GetRequests, 144 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 100 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=728, Invalid=1434, Unknown=0, NotChecked=0, Total=2162 [2024-11-08 17:58:58,687 INFO L432 NwaCegarLoop]: 1035 mSDtfsCounter, 15 mSDsluCounter, 12381 mSDsCounter, 0 mSdLazyCounter, 592 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 13416 SdHoareTripleChecker+Invalid, 599 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 592 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-11-08 17:58:58,687 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 13416 Invalid, 599 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 592 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-11-08 17:58:58,689 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1163 states. [2024-11-08 17:58:58,702 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1163 to 1163. [2024-11-08 17:58:58,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1163 states, 728 states have (on average 1.6868131868131868) internal successors, (1228), 1153 states have internal predecessors, (1228), 6 states have call successors, (6), 3 states have call predecessors, (6), 4 states have return successors, (7), 6 states have call predecessors, (7), 6 states have call successors, (7) [2024-11-08 17:58:58,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1163 states to 1163 states and 1241 transitions. [2024-11-08 17:58:58,727 INFO L78 Accepts]: Start accepts. Automaton has 1163 states and 1241 transitions. Word has length 85 [2024-11-08 17:58:58,728 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 17:58:58,728 INFO L471 AbstractCegarLoop]: Abstraction has 1163 states and 1241 transitions. [2024-11-08 17:58:58,728 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 3.6923076923076925) internal successors, (96), 26 states have internal predecessors, (96), 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) [2024-11-08 17:58:58,728 INFO L276 IsEmpty]: Start isEmpty. Operand 1163 states and 1241 transitions. [2024-11-08 17:58:58,729 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2024-11-08 17:58:58,729 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 17:58:58,729 INFO L215 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 17:58:58,749 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a7b4d5e-c5d7-404b-8918-c4de76df1de6/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Forceful destruction successful, exit code 0 [2024-11-08 17:58:58,930 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a7b4d5e-c5d7-404b-8918-c4de76df1de6/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:58:58,930 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr81REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 627 more)] === [2024-11-08 17:58:58,931 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 17:58:58,931 INFO L85 PathProgramCache]: Analyzing trace with hash -1739071063, now seen corresponding path program 2 times [2024-11-08 17:58:58,931 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-08 17:58:58,931 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [237650560] [2024-11-08 17:58:58,932 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-08 17:58:58,932 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 17:58:58,932 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a7b4d5e-c5d7-404b-8918-c4de76df1de6/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 17:58:58,933 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a7b4d5e-c5d7-404b-8918-c4de76df1de6/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 17:58:58,934 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a7b4d5e-c5d7-404b-8918-c4de76df1de6/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2024-11-08 17:59:27,259 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-08 17:59:27,259 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 17:59:27,283 INFO L255 TraceCheckSpWp]: Trace formula consists of 574 conjuncts, 64 conjuncts are in the unsatisfiable core [2024-11-08 17:59:27,293 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 17:59:27,475 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2024-11-08 17:59:27,475 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 [2024-11-08 17:59:27,484 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 [2024-11-08 17:59:27,522 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 [2024-11-08 17:59:27,535 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 [2024-11-08 17:59:27,703 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 [2024-11-08 17:59:27,710 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 [2024-11-08 17:59:28,336 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-08 17:59:28,336 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 [2024-11-08 17:59:28,348 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 [2024-11-08 17:59:28,416 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 [2024-11-08 17:59:28,424 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 [2024-11-08 17:59:28,464 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 231 trivial. 0 not checked. [2024-11-08 17:59:28,465 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 17:59:29,109 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (and (forall ((v_ArrVal_2071 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (select (store |c_#memory_$Pointer$#2.offset| |c_ULTIMATE.start_main_#t~mem36#1.base| v_ArrVal_2071) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (bvule (bvadd (_ bv16 32) .cse0) (bvadd (_ bv20 32) .cse0)))) (forall ((v_ArrVal_2071 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_2072 (Array (_ BitVec 32) (_ BitVec 32)))) (bvule (bvadd (_ bv20 32) (select (select (store |c_#memory_$Pointer$#2.offset| |c_ULTIMATE.start_main_#t~mem36#1.base| v_ArrVal_2071) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)) (select |c_#length| (select (select (store |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_main_#t~mem36#1.base| v_ArrVal_2072) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))))) is different from false [2024-11-08 17:59:29,114 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-08 17:59:29,114 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [237650560] [2024-11-08 17:59:29,114 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [237650560] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 17:59:29,115 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [881848553] [2024-11-08 17:59:29,115 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-08 17:59:29,115 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-08 17:59:29,115 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a7b4d5e-c5d7-404b-8918-c4de76df1de6/bin/uautomizer-verify-jihMAELWvX/cvc4 [2024-11-08 17:59:29,116 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a7b4d5e-c5d7-404b-8918-c4de76df1de6/bin/uautomizer-verify-jihMAELWvX/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-08 17:59:29,117 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a7b4d5e-c5d7-404b-8918-c4de76df1de6/bin/uautomizer-verify-jihMAELWvX/cvc4 --incremental --print-success --lang smt (32)] Waiting until timeout for monitored process [2024-11-08 17:59:30,875 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-08 17:59:30,875 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-08 17:59:30,915 INFO L255 TraceCheckSpWp]: Trace formula consists of 574 conjuncts, 25 conjuncts are in the unsatisfiable core [2024-11-08 17:59:30,918 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 17:59:31,997 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:59:31,997 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 17:59:35,075 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 17:59:35,075 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [881848553] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 17:59:35,076 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 17:59:35,076 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 26, 26] total 58 [2024-11-08 17:59:35,076 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1980505876] [2024-11-08 17:59:35,076 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 17:59:35,077 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 58 states [2024-11-08 17:59:35,077 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-08 17:59:35,078 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 58 interpolants. [2024-11-08 17:59:35,079 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=699, Invalid=2844, Unknown=1, NotChecked=116, Total=3660 [2024-11-08 17:59:35,079 INFO L87 Difference]: Start difference. First operand 1163 states and 1241 transitions. Second operand has 58 states, 57 states have (on average 3.1403508771929824) internal successors, (179), 58 states have internal predecessors, (179), 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) [2024-11-08 18:00:19,096 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 18:00:19,097 INFO L93 Difference]: Finished difference Result 1579 states and 1715 transitions. [2024-11-08 18:00:19,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 82 states. [2024-11-08 18:00:19,097 INFO L78 Accepts]: Start accepts. Automaton has has 58 states, 57 states have (on average 3.1403508771929824) internal successors, (179), 58 states have internal predecessors, (179), 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 97 [2024-11-08 18:00:19,098 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 18:00:19,101 INFO L225 Difference]: With dead ends: 1579 [2024-11-08 18:00:19,101 INFO L226 Difference]: Without dead ends: 1571 [2024-11-08 18:00:19,105 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 369 GetRequests, 234 SyntacticMatches, 1 SemanticMatches, 134 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 3088 ImplicationChecksByTransitivity, 13.4s TimeCoverageRelationStatistics Valid=3106, Invalid=14987, Unknown=1, NotChecked=266, Total=18360 [2024-11-08 18:00:19,106 INFO L432 NwaCegarLoop]: 681 mSDtfsCounter, 803 mSDsluCounter, 19861 mSDsCounter, 0 mSdLazyCounter, 15955 mSolverCounterSat, 80 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 30.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 808 SdHoareTripleChecker+Valid, 20542 SdHoareTripleChecker+Invalid, 16035 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 80 IncrementalHoareTripleChecker+Valid, 15955 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 34.1s IncrementalHoareTripleChecker+Time [2024-11-08 18:00:19,106 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [808 Valid, 20542 Invalid, 16035 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [80 Valid, 15955 Invalid, 0 Unknown, 0 Unchecked, 34.1s Time] [2024-11-08 18:00:19,108 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1571 states. [2024-11-08 18:00:19,120 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1571 to 1196. [2024-11-08 18:00:19,122 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1196 states, 762 states have (on average 1.6653543307086613) internal successors, (1269), 1186 states have internal predecessors, (1269), 6 states have call successors, (6), 3 states have call predecessors, (6), 4 states have return successors, (7), 6 states have call predecessors, (7), 6 states have call successors, (7) [2024-11-08 18:00:19,124 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1196 states to 1196 states and 1282 transitions. [2024-11-08 18:00:19,124 INFO L78 Accepts]: Start accepts. Automaton has 1196 states and 1282 transitions. Word has length 97 [2024-11-08 18:00:19,124 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 18:00:19,125 INFO L471 AbstractCegarLoop]: Abstraction has 1196 states and 1282 transitions. [2024-11-08 18:00:19,125 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 58 states, 57 states have (on average 3.1403508771929824) internal successors, (179), 58 states have internal predecessors, (179), 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) [2024-11-08 18:00:19,125 INFO L276 IsEmpty]: Start isEmpty. Operand 1196 states and 1282 transitions. [2024-11-08 18:00:19,126 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2024-11-08 18:00:19,126 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 18:00:19,127 INFO L215 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, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 18:00:19,170 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a7b4d5e-c5d7-404b-8918-c4de76df1de6/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Forceful destruction successful, exit code 0 [2024-11-08 18:00:19,335 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a7b4d5e-c5d7-404b-8918-c4de76df1de6/bin/uautomizer-verify-jihMAELWvX/cvc4 --incremental --print-success --lang smt (32)] Forceful destruction successful, exit code 0 [2024-11-08 18:00:19,527 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a7b4d5e-c5d7-404b-8918-c4de76df1de6/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,32 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a7b4d5e-c5d7-404b-8918-c4de76df1de6/bin/uautomizer-verify-jihMAELWvX/cvc4 --incremental --print-success --lang smt [2024-11-08 18:00:19,527 INFO L396 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr84REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 627 more)] === [2024-11-08 18:00:19,528 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:00:19,528 INFO L85 PathProgramCache]: Analyzing trace with hash 101695668, now seen corresponding path program 1 times [2024-11-08 18:00:19,528 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-08 18:00:19,528 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [819075170] [2024-11-08 18:00:19,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:00:19,528 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 18:00:19,529 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a7b4d5e-c5d7-404b-8918-c4de76df1de6/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 18:00:19,530 INFO L229 MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a7b4d5e-c5d7-404b-8918-c4de76df1de6/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 18:00:19,531 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a7b4d5e-c5d7-404b-8918-c4de76df1de6/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Waiting until timeout for monitored process [2024-11-08 18:00:20,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:00:20,132 INFO L255 TraceCheckSpWp]: Trace formula consists of 836 conjuncts, 57 conjuncts are in the unsatisfiable core [2024-11-08 18:00:20,143 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 18:00:20,264 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2024-11-08 18:00:20,264 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 [2024-11-08 18:00:20,281 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 [2024-11-08 18:00:20,657 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-08 18:00:20,657 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 [2024-11-08 18:00:20,731 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-08 18:00:20,731 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 44 treesize of output 43 [2024-11-08 18:00:20,785 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 [2024-11-08 18:00:20,812 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 946 trivial. 0 not checked. [2024-11-08 18:00:20,812 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 18:00:20,871 INFO L349 Elim1Store]: treesize reduction 7, result has 63.2 percent of original size [2024-11-08 18:00:20,871 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 [2024-11-08 18:00:20,929 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_2730 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (let ((.cse0 (select (select |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (= .cse0 (select (select (store |c_#memory_$Pointer$#2.base| .cse0 v_ArrVal_2730) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))))) is different from false [2024-11-08 18:00:21,352 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_2776 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_2730 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse1 (store |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_main_#t~mem36#1.base| v_ArrVal_2776)) (.cse2 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (let ((.cse0 (select (select .cse1 |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (= .cse0 (select (select (store .cse1 .cse0 v_ArrVal_2730) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))))) is different from false [2024-11-08 18:00:21,354 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-08 18:00:21,354 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [819075170] [2024-11-08 18:00:21,354 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [819075170] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 18:00:21,355 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [580999290] [2024-11-08 18:00:21,355 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:00:21,355 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-08 18:00:21,355 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a7b4d5e-c5d7-404b-8918-c4de76df1de6/bin/uautomizer-verify-jihMAELWvX/cvc4 [2024-11-08 18:00:21,356 INFO L229 MonitoredProcess]: Starting monitored process 34 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a7b4d5e-c5d7-404b-8918-c4de76df1de6/bin/uautomizer-verify-jihMAELWvX/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-08 18:00:21,357 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a7b4d5e-c5d7-404b-8918-c4de76df1de6/bin/uautomizer-verify-jihMAELWvX/cvc4 --incremental --print-success --lang smt (34)] Waiting until timeout for monitored process [2024-11-08 18:00:24,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:00:24,856 INFO L255 TraceCheckSpWp]: Trace formula consists of 836 conjuncts, 62 conjuncts are in the unsatisfiable core [2024-11-08 18:00:24,865 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 18:00:24,871 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 [2024-11-08 18:00:25,073 INFO L349 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2024-11-08 18:00:25,073 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 [2024-11-08 18:00:25,139 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 [2024-11-08 18:00:25,350 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 [2024-11-08 18:00:26,634 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-08 18:00:26,634 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 [2024-11-08 18:00:26,804 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-08 18:00:26,804 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 [2024-11-08 18:00:26,844 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 [2024-11-08 18:00:26,925 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 946 trivial. 0 not checked. [2024-11-08 18:00:26,925 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 18:00:26,965 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_3199 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (_ bv1 1) (select |c_#valid| (select (select (store |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_main_#t~mem38#1.base| v_ArrVal_3199) |c_ULTIMATE.start_main_~user~0#1.base|) (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|)))))) is different from false [2024-11-08 18:00:26,978 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_3199 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (_ bv1 1) (select |c_#valid| (let ((.cse0 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (store |c_#memory_$Pointer$#2.base| (select (select |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse0) v_ArrVal_3199) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0)))))) is different from false [2024-11-08 18:00:27,455 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_3199 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_3245 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (_ bv1 1) (select |c_#valid| (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (let ((.cse0 (store |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_main_#t~mem36#1.base| v_ArrVal_3245))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_3199)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))))) is different from false [2024-11-08 18:00:27,458 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [580999290] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 18:00:27,458 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-08 18:00:27,458 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9] total 17 [2024-11-08 18:00:27,458 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [990557560] [2024-11-08 18:00:27,458 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-08 18:00:27,459 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-08 18:00:27,459 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-08 18:00:27,459 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-08 18:00:27,460 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=311, Unknown=12, NotChecked=200, Total=600 [2024-11-08 18:00:27,460 INFO L87 Difference]: Start difference. First operand 1196 states and 1282 transitions. Second operand has 18 states, 15 states have (on average 6.666666666666667) internal successors, (100), 18 states have internal predecessors, (100), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-08 18:00:41,460 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 18:00:41,460 INFO L93 Difference]: Finished difference Result 1570 states and 1684 transitions. [2024-11-08 18:00:41,461 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-08 18:00:41,461 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 15 states have (on average 6.666666666666667) internal successors, (100), 18 states have internal predecessors, (100), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 122 [2024-11-08 18:00:41,462 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 18:00:41,465 INFO L225 Difference]: With dead ends: 1570 [2024-11-08 18:00:41,465 INFO L226 Difference]: Without dead ends: 1570 [2024-11-08 18:00:41,466 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 257 GetRequests, 232 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 5 IntricatePredicates, 0 DeprecatedPredicates, 87 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=86, Invalid=342, Unknown=12, NotChecked=210, Total=650 [2024-11-08 18:00:41,466 INFO L432 NwaCegarLoop]: 677 mSDtfsCounter, 710 mSDsluCounter, 7104 mSDsCounter, 0 mSdLazyCounter, 6168 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 715 SdHoareTripleChecker+Valid, 7781 SdHoareTripleChecker+Invalid, 6178 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 6168 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13.8s IncrementalHoareTripleChecker+Time [2024-11-08 18:00:41,467 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [715 Valid, 7781 Invalid, 6178 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [10 Valid, 6168 Invalid, 0 Unknown, 0 Unchecked, 13.8s Time] [2024-11-08 18:00:41,469 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1570 states. [2024-11-08 18:00:41,484 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1570 to 1195. [2024-11-08 18:00:41,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1195 states, 762 states have (on average 1.6640419947506562) internal successors, (1268), 1185 states have internal predecessors, (1268), 6 states have call successors, (6), 3 states have call predecessors, (6), 4 states have return successors, (7), 6 states have call predecessors, (7), 6 states have call successors, (7) [2024-11-08 18:00:41,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1195 states to 1195 states and 1281 transitions. [2024-11-08 18:00:41,488 INFO L78 Accepts]: Start accepts. Automaton has 1195 states and 1281 transitions. Word has length 122 [2024-11-08 18:00:41,488 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 18:00:41,488 INFO L471 AbstractCegarLoop]: Abstraction has 1195 states and 1281 transitions. [2024-11-08 18:00:41,489 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 15 states have (on average 6.666666666666667) internal successors, (100), 18 states have internal predecessors, (100), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-08 18:00:41,489 INFO L276 IsEmpty]: Start isEmpty. Operand 1195 states and 1281 transitions. [2024-11-08 18:00:41,490 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2024-11-08 18:00:41,490 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 18:00:41,490 INFO L215 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, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 18:00:41,512 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a7b4d5e-c5d7-404b-8918-c4de76df1de6/bin/uautomizer-verify-jihMAELWvX/cvc4 --incremental --print-success --lang smt (34)] Ended with exit code 0 [2024-11-08 18:00:41,728 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a7b4d5e-c5d7-404b-8918-c4de76df1de6/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Forceful destruction successful, exit code 0 [2024-11-08 18:00:41,891 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a7b4d5e-c5d7-404b-8918-c4de76df1de6/bin/uautomizer-verify-jihMAELWvX/cvc4 --incremental --print-success --lang smt,33 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a7b4d5e-c5d7-404b-8918-c4de76df1de6/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 18:00:41,892 INFO L396 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr85REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 627 more)] === [2024-11-08 18:00:41,892 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:00:41,892 INFO L85 PathProgramCache]: Analyzing trace with hash 101695669, now seen corresponding path program 1 times [2024-11-08 18:00:41,893 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-08 18:00:41,893 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [718542797] [2024-11-08 18:00:41,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:00:41,894 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 18:00:41,894 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a7b4d5e-c5d7-404b-8918-c4de76df1de6/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 18:00:41,896 INFO L229 MonitoredProcess]: Starting monitored process 35 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a7b4d5e-c5d7-404b-8918-c4de76df1de6/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 18:00:41,898 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a7b4d5e-c5d7-404b-8918-c4de76df1de6/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Waiting until timeout for monitored process [2024-11-08 18:00:42,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:00:42,644 INFO L255 TraceCheckSpWp]: Trace formula consists of 836 conjuncts, 110 conjuncts are in the unsatisfiable core [2024-11-08 18:00:42,688 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 18:00:42,872 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 [2024-11-08 18:00:42,892 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2024-11-08 18:00:42,892 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 [2024-11-08 18:00:42,935 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 [2024-11-08 18:00:42,942 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 [2024-11-08 18:00:43,113 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 [2024-11-08 18:00:43,120 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 [2024-11-08 18:00:44,127 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-08 18:00:44,127 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 [2024-11-08 18:00:44,145 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 [2024-11-08 18:00:44,289 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-08 18:00:44,290 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 [2024-11-08 18:00:44,298 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 30 treesize of output 13 [2024-11-08 18:00:44,339 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 [2024-11-08 18:00:44,345 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 [2024-11-08 18:00:44,376 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 946 trivial. 0 not checked. [2024-11-08 18:00:44,376 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 18:00:44,522 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse0 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (and (forall ((v_ArrVal_3714 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_3713 (Array (_ BitVec 32) (_ BitVec 32)))) (bvule (bvadd (_ bv8 32) (select (select (store |c_#memory_$Pointer$#2.offset| |c_ULTIMATE.start_main_#t~mem38#1.base| v_ArrVal_3713) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0)) (select |c_#length| (select (select (store |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_main_#t~mem38#1.base| v_ArrVal_3714) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0)))) (forall ((v_ArrVal_3713 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse1 (select (select (store |c_#memory_$Pointer$#2.offset| |c_ULTIMATE.start_main_#t~mem38#1.base| v_ArrVal_3713) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0))) (bvule (bvadd (_ bv4 32) .cse1) (bvadd (_ bv8 32) .cse1)))))) is different from false [2024-11-08 18:00:44,553 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse2 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (let ((.cse1 (select (select |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (and (forall ((v_ArrVal_3713 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (select (store |c_#memory_$Pointer$#2.offset| .cse1 v_ArrVal_3713) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (bvule (bvadd (_ bv4 32) .cse0) (bvadd (_ bv8 32) .cse0)))) (forall ((v_ArrVal_3714 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_3713 (Array (_ BitVec 32) (_ BitVec 32)))) (bvule (bvadd (_ bv8 32) (select (select (store |c_#memory_$Pointer$#2.offset| .cse1 v_ArrVal_3713) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2)) (select |c_#length| (select (select (store |c_#memory_$Pointer$#2.base| .cse1 v_ArrVal_3714) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))))))) is different from false [2024-11-08 18:00:46,104 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (and (forall ((v_ArrVal_3714 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_3713 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_3806 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_3805 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse2 (store |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_main_#t~mem36#1.base| v_ArrVal_3805))) (let ((.cse0 (select (select .cse2 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (bvule (bvadd (_ bv8 32) (select (select (store (store |c_#memory_$Pointer$#2.offset| |c_ULTIMATE.start_main_#t~mem36#1.base| v_ArrVal_3806) .cse0 v_ArrVal_3713) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)) (select |c_#length| (select (select (store .cse2 .cse0 v_ArrVal_3714) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))))) (forall ((v_ArrVal_3713 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_3806 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_3805 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse3 (select (select (store (store |c_#memory_$Pointer$#2.offset| |c_ULTIMATE.start_main_#t~mem36#1.base| v_ArrVal_3806) (select (select (store |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_main_#t~mem36#1.base| v_ArrVal_3805) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_3713) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (bvule (bvadd (_ bv4 32) .cse3) (bvadd (_ bv8 32) .cse3)))))) is different from false [2024-11-08 18:00:46,111 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-08 18:00:46,111 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [718542797] [2024-11-08 18:00:46,111 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [718542797] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 18:00:46,111 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1252785876] [2024-11-08 18:00:46,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:00:46,111 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-08 18:00:46,112 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a7b4d5e-c5d7-404b-8918-c4de76df1de6/bin/uautomizer-verify-jihMAELWvX/cvc4 [2024-11-08 18:00:46,112 INFO L229 MonitoredProcess]: Starting monitored process 36 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a7b4d5e-c5d7-404b-8918-c4de76df1de6/bin/uautomizer-verify-jihMAELWvX/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-08 18:00:46,114 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a7b4d5e-c5d7-404b-8918-c4de76df1de6/bin/uautomizer-verify-jihMAELWvX/cvc4 --incremental --print-success --lang smt (36)] Waiting until timeout for monitored process [2024-11-08 18:02:18,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:02:18,263 INFO L255 TraceCheckSpWp]: Trace formula consists of 836 conjuncts, 112 conjuncts are in the unsatisfiable core [2024-11-08 18:02:18,276 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 18:02:18,281 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 [2024-11-08 18:02:18,432 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 [2024-11-08 18:02:18,451 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2024-11-08 18:02:18,451 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 [2024-11-08 18:02:18,471 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 [2024-11-08 18:02:18,485 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 [2024-11-08 18:02:18,563 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 [2024-11-08 18:02:18,569 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 [2024-11-08 18:02:19,564 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-08 18:02:19,564 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 [2024-11-08 18:02:19,573 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 [2024-11-08 18:02:19,682 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-08 18:02:19,682 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 [2024-11-08 18:02:19,719 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 [2024-11-08 18:02:19,761 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 [2024-11-08 18:02:19,770 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 [2024-11-08 18:02:19,775 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 946 trivial. 0 not checked. [2024-11-08 18:02:19,776 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 18:02:20,089 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (let ((.cse0 (select (select |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (and (forall ((v_ArrVal_4276 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_4275 (Array (_ BitVec 32) (_ BitVec 32)))) (bvule (bvadd (_ bv8 32) (select (select (store |c_#memory_$Pointer$#2.offset| .cse0 v_ArrVal_4276) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)) (select |c_#length| (select (select (store |c_#memory_$Pointer$#2.base| .cse0 v_ArrVal_4275) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))) (forall ((v_ArrVal_4276 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse2 (select (select (store |c_#memory_$Pointer$#2.offset| .cse0 v_ArrVal_4276) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (bvule (bvadd (_ bv4 32) .cse2) (bvadd (_ bv8 32) .cse2))))))) is different from false [2024-11-08 18:02:21,755 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (and (forall ((v_ArrVal_4368 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_4367 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_4276 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_4275 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse2 (store |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_main_#t~mem36#1.base| v_ArrVal_4368))) (let ((.cse0 (select (select .cse2 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (bvule (bvadd (select (select (store (store |c_#memory_$Pointer$#2.offset| |c_ULTIMATE.start_main_#t~mem36#1.base| v_ArrVal_4367) .cse0 v_ArrVal_4276) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) (_ bv8 32)) (select |c_#length| (select (select (store .cse2 .cse0 v_ArrVal_4275) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))))) (forall ((v_ArrVal_4368 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_4367 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_4276 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse3 (select (select (store (store |c_#memory_$Pointer$#2.offset| |c_ULTIMATE.start_main_#t~mem36#1.base| v_ArrVal_4367) (select (select (store |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_main_#t~mem36#1.base| v_ArrVal_4368) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_4276) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (bvule (bvadd .cse3 (_ bv4 32)) (bvadd .cse3 (_ bv8 32))))))) is different from false [2024-11-08 18:02:21,763 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1252785876] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 18:02:21,763 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-08 18:02:21,763 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 9 [2024-11-08 18:02:21,764 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [972583665] [2024-11-08 18:02:21,764 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-08 18:02:21,764 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-08 18:02:21,764 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-08 18:02:21,765 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-08 18:02:21,765 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=122, Unknown=13, NotChecked=130, Total=306 [2024-11-08 18:02:21,765 INFO L87 Difference]: Start difference. First operand 1195 states and 1281 transitions. Second operand has 10 states, 8 states have (on average 10.25) internal successors, (82), 10 states have internal predecessors, (82), 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) [2024-11-08 18:02:32,623 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 18:02:32,623 INFO L93 Difference]: Finished difference Result 1567 states and 1681 transitions. [2024-11-08 18:02:32,624 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-08 18:02:32,624 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 8 states have (on average 10.25) internal successors, (82), 10 states have internal predecessors, (82), 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 122 [2024-11-08 18:02:32,625 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 18:02:32,638 INFO L225 Difference]: With dead ends: 1567 [2024-11-08 18:02:32,638 INFO L226 Difference]: Without dead ends: 1567 [2024-11-08 18:02:32,639 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 261 GetRequests, 237 SyntacticMatches, 3 SemanticMatches, 21 ConstructedPredicates, 5 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=73, Invalid=238, Unknown=15, NotChecked=180, Total=506 [2024-11-08 18:02:32,639 INFO L432 NwaCegarLoop]: 681 mSDtfsCounter, 711 mSDsluCounter, 2303 mSDsCounter, 0 mSdLazyCounter, 3903 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 715 SdHoareTripleChecker+Valid, 2984 SdHoareTripleChecker+Invalid, 3910 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 3903 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.5s IncrementalHoareTripleChecker+Time [2024-11-08 18:02:32,639 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [715 Valid, 2984 Invalid, 3910 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 3903 Invalid, 0 Unknown, 0 Unchecked, 10.5s Time] [2024-11-08 18:02:32,641 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1567 states. [2024-11-08 18:02:32,653 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1567 to 1194. [2024-11-08 18:02:32,655 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1194 states, 762 states have (on average 1.662729658792651) internal successors, (1267), 1184 states have internal predecessors, (1267), 6 states have call successors, (6), 3 states have call predecessors, (6), 4 states have return successors, (7), 6 states have call predecessors, (7), 6 states have call successors, (7) [2024-11-08 18:02:32,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1194 states to 1194 states and 1280 transitions. [2024-11-08 18:02:32,657 INFO L78 Accepts]: Start accepts. Automaton has 1194 states and 1280 transitions. Word has length 122 [2024-11-08 18:02:32,657 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 18:02:32,658 INFO L471 AbstractCegarLoop]: Abstraction has 1194 states and 1280 transitions. [2024-11-08 18:02:32,658 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 8 states have (on average 10.25) internal successors, (82), 10 states have internal predecessors, (82), 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) [2024-11-08 18:02:32,658 INFO L276 IsEmpty]: Start isEmpty. Operand 1194 states and 1280 transitions. [2024-11-08 18:02:32,659 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2024-11-08 18:02:32,659 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 18:02:32,659 INFO L215 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 18:02:32,693 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a7b4d5e-c5d7-404b-8918-c4de76df1de6/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Forceful destruction successful, exit code 0 [2024-11-08 18:02:32,903 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a7b4d5e-c5d7-404b-8918-c4de76df1de6/bin/uautomizer-verify-jihMAELWvX/cvc4 --incremental --print-success --lang smt (36)] Forceful destruction successful, exit code 0 [2024-11-08 18:02:33,064 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a7b4d5e-c5d7-404b-8918-c4de76df1de6/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,36 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a7b4d5e-c5d7-404b-8918-c4de76df1de6/bin/uautomizer-verify-jihMAELWvX/cvc4 --incremental --print-success --lang smt [2024-11-08 18:02:33,064 INFO L396 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr88REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 627 more)] === [2024-11-08 18:02:33,065 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:02:33,065 INFO L85 PathProgramCache]: Analyzing trace with hash 1664019503, now seen corresponding path program 1 times [2024-11-08 18:02:33,065 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-08 18:02:33,065 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [545317632] [2024-11-08 18:02:33,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:02:33,065 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 18:02:33,066 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a7b4d5e-c5d7-404b-8918-c4de76df1de6/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 18:02:33,067 INFO L229 MonitoredProcess]: Starting monitored process 37 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a7b4d5e-c5d7-404b-8918-c4de76df1de6/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 18:02:33,067 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a7b4d5e-c5d7-404b-8918-c4de76df1de6/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Waiting until timeout for monitored process [2024-11-08 18:02:33,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:02:33,825 INFO L255 TraceCheckSpWp]: Trace formula consists of 865 conjuncts, 60 conjuncts are in the unsatisfiable core [2024-11-08 18:02:33,834 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 18:02:33,837 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 [2024-11-08 18:02:33,983 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2024-11-08 18:02:33,983 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 [2024-11-08 18:02:33,998 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 [2024-11-08 18:02:34,395 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-08 18:02:34,395 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 [2024-11-08 18:02:34,459 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-08 18:02:34,459 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 [2024-11-08 18:02:34,525 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-08 18:02:34,525 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 [2024-11-08 18:02:34,580 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 [2024-11-08 18:02:34,604 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 946 trivial. 0 not checked. [2024-11-08 18:02:34,605 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 18:02:34,658 INFO L349 Elim1Store]: treesize reduction 7, result has 63.2 percent of original size [2024-11-08 18:02:34,659 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 [2024-11-08 18:02:34,666 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_4806 (Array (_ BitVec 32) (_ BitVec 32)))) (= (select (select (store |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_main_#t~mem39#1.base| v_ArrVal_4806) |c_ULTIMATE.start_main_~user~0#1.base|) (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|)) |c_ULTIMATE.start_main_#t~mem39#1.base|)) is different from false [2024-11-08 18:02:34,677 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_4806 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (let ((.cse0 (select (select |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (= .cse0 (select (select (store |c_#memory_$Pointer$#2.base| .cse0 v_ArrVal_4806) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))))) is different from false [2024-11-08 18:02:34,695 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_4805 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_4806 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (store |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_main_#t~mem38#1.base| v_ArrVal_4805)) (.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_4806) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2) .cse1)))) is different from false [2024-11-08 18:02:34,708 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_4805 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_4806 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse2 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (let ((.cse1 (store |c_#memory_$Pointer$#2.base| (select (select |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse2) v_ArrVal_4805))) (let ((.cse0 (select (select .cse1 |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (= .cse0 (select (select (store .cse1 .cse0 v_ArrVal_4806) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2)))))) is different from false [2024-11-08 18:02:35,109 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_4805 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_4852 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_4806 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse2 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (let ((.cse1 (let ((.cse3 (store |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_main_#t~mem36#1.base| v_ArrVal_4852))) (store .cse3 (select (select .cse3 |c_ULTIMATE.start_main_~user~0#1.base|) .cse2) v_ArrVal_4805)))) (let ((.cse0 (select (select .cse1 |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (= .cse0 (select (select (store .cse1 .cse0 v_ArrVal_4806) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2)))))) is different from false [2024-11-08 18:02:35,125 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-08 18:02:35,125 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [545317632] [2024-11-08 18:02:35,125 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [545317632] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 18:02:35,125 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [397074874] [2024-11-08 18:02:35,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:02:35,125 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-08 18:02:35,126 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a7b4d5e-c5d7-404b-8918-c4de76df1de6/bin/uautomizer-verify-jihMAELWvX/cvc4 [2024-11-08 18:02:35,127 INFO L229 MonitoredProcess]: Starting monitored process 38 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a7b4d5e-c5d7-404b-8918-c4de76df1de6/bin/uautomizer-verify-jihMAELWvX/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-08 18:02:35,128 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a7b4d5e-c5d7-404b-8918-c4de76df1de6/bin/uautomizer-verify-jihMAELWvX/cvc4 --incremental --print-success --lang smt (38)] Waiting until timeout for monitored process [2024-11-08 18:02:55,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:02:55,160 INFO L255 TraceCheckSpWp]: Trace formula consists of 865 conjuncts, 64 conjuncts are in the unsatisfiable core [2024-11-08 18:02:55,168 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 18:02:55,174 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 [2024-11-08 18:02:55,339 INFO L349 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2024-11-08 18:02:55,340 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 [2024-11-08 18:02:55,391 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 [2024-11-08 18:02:55,595 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 [2024-11-08 18:02:56,916 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-08 18:02:56,917 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 [2024-11-08 18:02:57,091 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-08 18:02:57,092 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 [2024-11-08 18:02:57,214 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-08 18:02:57,214 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 [2024-11-08 18:02:57,243 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 [2024-11-08 18:02:57,305 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 946 trivial. 0 not checked. [2024-11-08 18:02:57,306 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 18:02:57,328 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_5291 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (_ bv1 1) (select |c_#valid| (select (select (store |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_main_#t~mem39#1.base| v_ArrVal_5291) |c_ULTIMATE.start_main_~user~0#1.base|) (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|)))))) is different from false [2024-11-08 18:02:57,339 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_5291 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (_ bv1 1) (select |c_#valid| (let ((.cse0 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (store |c_#memory_$Pointer$#2.base| (select (select |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse0) v_ArrVal_5291) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0)))))) is different from false [2024-11-08 18:02:57,356 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_5290 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_5291 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (_ bv1 1) (select |c_#valid| (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (let ((.cse0 (store |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_main_#t~mem38#1.base| v_ArrVal_5290))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_5291)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))))) is different from false [2024-11-08 18:02:57,367 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_5290 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_5291 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (_ bv1 1) (select |c_#valid| (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (let ((.cse0 (store |c_#memory_$Pointer$#2.base| (select (select |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_5290))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_5291)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))))) is different from false [2024-11-08 18:02:57,848 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_5337 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_5290 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_5291 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (_ bv1 1) (select |c_#valid| (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (let ((.cse0 (let ((.cse2 (store |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_main_#t~mem36#1.base| v_ArrVal_5337))) (store .cse2 (select (select .cse2 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_5290)))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_5291)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))))) is different from false [2024-11-08 18:02:57,851 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [397074874] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 18:02:57,851 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-08 18:02:57,851 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10] total 19 [2024-11-08 18:02:57,851 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1798424829] [2024-11-08 18:02:57,852 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-08 18:02:57,852 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-11-08 18:02:57,852 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-08 18:02:57,853 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-11-08 18:02:57,853 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=94, Invalid=356, Unknown=10, NotChecked=470, Total=930 [2024-11-08 18:02:57,853 INFO L87 Difference]: Start difference. First operand 1194 states and 1280 transitions. Second operand has 20 states, 17 states have (on average 6.0) internal successors, (102), 20 states have internal predecessors, (102), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-08 18:03:09,456 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 18:03:09,456 INFO L93 Difference]: Finished difference Result 1568 states and 1682 transitions. [2024-11-08 18:03:09,456 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-08 18:03:09,457 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 17 states have (on average 6.0) internal successors, (102), 20 states have internal predecessors, (102), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 125 [2024-11-08 18:03:09,457 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 18:03:09,460 INFO L225 Difference]: With dead ends: 1568 [2024-11-08 18:03:09,460 INFO L226 Difference]: Without dead ends: 1568 [2024-11-08 18:03:09,461 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 269 GetRequests, 238 SyntacticMatches, 1 SemanticMatches, 30 ConstructedPredicates, 10 IntricatePredicates, 0 DeprecatedPredicates, 94 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=103, Invalid=389, Unknown=10, NotChecked=490, Total=992 [2024-11-08 18:03:09,461 INFO L432 NwaCegarLoop]: 675 mSDtfsCounter, 707 mSDsluCounter, 5544 mSDsCounter, 0 mSdLazyCounter, 4843 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 712 SdHoareTripleChecker+Valid, 6219 SdHoareTripleChecker+Invalid, 4854 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 4843 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.4s IncrementalHoareTripleChecker+Time [2024-11-08 18:03:09,462 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [712 Valid, 6219 Invalid, 4854 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [11 Valid, 4843 Invalid, 0 Unknown, 0 Unchecked, 11.4s Time] [2024-11-08 18:03:09,464 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1568 states. [2024-11-08 18:03:09,493 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1568 to 1193. [2024-11-08 18:03:09,495 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1193 states, 762 states have (on average 1.6614173228346456) internal successors, (1266), 1183 states have internal predecessors, (1266), 6 states have call successors, (6), 3 states have call predecessors, (6), 4 states have return successors, (7), 6 states have call predecessors, (7), 6 states have call successors, (7) [2024-11-08 18:03:09,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1193 states to 1193 states and 1279 transitions. [2024-11-08 18:03:09,498 INFO L78 Accepts]: Start accepts. Automaton has 1193 states and 1279 transitions. Word has length 125 [2024-11-08 18:03:09,498 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 18:03:09,498 INFO L471 AbstractCegarLoop]: Abstraction has 1193 states and 1279 transitions. [2024-11-08 18:03:09,499 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 17 states have (on average 6.0) internal successors, (102), 20 states have internal predecessors, (102), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-08 18:03:09,499 INFO L276 IsEmpty]: Start isEmpty. Operand 1193 states and 1279 transitions. [2024-11-08 18:03:09,500 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2024-11-08 18:03:09,500 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 18:03:09,501 INFO L215 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 18:03:09,544 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a7b4d5e-c5d7-404b-8918-c4de76df1de6/bin/uautomizer-verify-jihMAELWvX/cvc4 --incremental --print-success --lang smt (38)] Forceful destruction successful, exit code 0 [2024-11-08 18:03:09,741 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a7b4d5e-c5d7-404b-8918-c4de76df1de6/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Forceful destruction successful, exit code 0 [2024-11-08 18:03:09,901 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 38 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a7b4d5e-c5d7-404b-8918-c4de76df1de6/bin/uautomizer-verify-jihMAELWvX/cvc4 --incremental --print-success --lang smt,37 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a7b4d5e-c5d7-404b-8918-c4de76df1de6/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 18:03:09,902 INFO L396 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr89REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 627 more)] === [2024-11-08 18:03:09,902 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:03:09,902 INFO L85 PathProgramCache]: Analyzing trace with hash 1664019504, now seen corresponding path program 1 times [2024-11-08 18:03:09,903 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-08 18:03:09,903 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [247349067] [2024-11-08 18:03:09,903 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:03:09,903 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 18:03:09,904 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a7b4d5e-c5d7-404b-8918-c4de76df1de6/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 18:03:09,905 INFO L229 MonitoredProcess]: Starting monitored process 39 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a7b4d5e-c5d7-404b-8918-c4de76df1de6/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 18:03:09,906 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a7b4d5e-c5d7-404b-8918-c4de76df1de6/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Waiting until timeout for monitored process [2024-11-08 18:03:10,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:03:10,758 INFO L255 TraceCheckSpWp]: Trace formula consists of 865 conjuncts, 114 conjuncts are in the unsatisfiable core [2024-11-08 18:03:10,772 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 18:03:10,777 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 [2024-11-08 18:03:10,965 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2024-11-08 18:03:10,965 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 [2024-11-08 18:03:10,973 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 [2024-11-08 18:03:10,999 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 [2024-11-08 18:03:11,012 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 [2024-11-08 18:03:11,145 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 [2024-11-08 18:03:11,153 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 [2024-11-08 18:03:12,247 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-08 18:03:12,248 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 [2024-11-08 18:03:12,266 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 [2024-11-08 18:03:12,427 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-08 18:03:12,428 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 [2024-11-08 18:03:12,446 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 [2024-11-08 18:03:12,599 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-08 18:03:12,600 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 [2024-11-08 18:03:12,619 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 [2024-11-08 18:03:12,658 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 [2024-11-08 18:03:12,666 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 [2024-11-08 18:03:12,720 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 946 trivial. 0 not checked. [2024-11-08 18:03:12,720 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 18:03:13,090 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (let ((.cse0 (select (select |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (and (forall ((v_ArrVal_5823 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_5824 (Array (_ BitVec 32) (_ BitVec 32)))) (bvule (bvadd (_ bv12 32) (select (select (store |c_#memory_$Pointer$#2.offset| .cse0 v_ArrVal_5824) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)) (select |c_#length| (select (select (store |c_#memory_$Pointer$#2.base| .cse0 v_ArrVal_5823) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))) (forall ((v_ArrVal_5824 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse2 (select (select (store |c_#memory_$Pointer$#2.offset| .cse0 v_ArrVal_5824) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (bvule (bvadd (_ bv8 32) .cse2) (bvadd (_ bv12 32) .cse2))))))) is different from false [2024-11-08 18:03:13,263 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (and (forall ((v_ArrVal_5821 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_5822 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_5823 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_5824 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse2 (store |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_main_#t~mem38#1.base| v_ArrVal_5822))) (let ((.cse0 (select (select .cse2 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (bvule (bvadd (_ bv12 32) (select (select (store (store |c_#memory_$Pointer$#2.offset| |c_ULTIMATE.start_main_#t~mem38#1.base| v_ArrVal_5821) .cse0 v_ArrVal_5824) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)) (select |c_#length| (select (select (store .cse2 .cse0 v_ArrVal_5823) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))))) (forall ((v_ArrVal_5821 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_5822 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_5824 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse3 (select (select (store (store |c_#memory_$Pointer$#2.offset| |c_ULTIMATE.start_main_#t~mem38#1.base| v_ArrVal_5821) (select (select (store |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_main_#t~mem38#1.base| v_ArrVal_5822) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_5824) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (bvule (bvadd (_ bv8 32) .cse3) (bvadd (_ bv12 32) .cse3)))))) is different from false [2024-11-08 18:03:13,383 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse2 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (let ((.cse0 (select (select |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (and (forall ((v_ArrVal_5821 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_5822 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_5823 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_5824 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse3 (store |c_#memory_$Pointer$#2.base| .cse0 v_ArrVal_5822))) (let ((.cse1 (select (select .cse3 |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (bvule (bvadd (_ bv12 32) (select (select (store (store |c_#memory_$Pointer$#2.offset| .cse0 v_ArrVal_5821) .cse1 v_ArrVal_5824) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2)) (select |c_#length| (select (select (store .cse3 .cse1 v_ArrVal_5823) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2)))))) (forall ((v_ArrVal_5821 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_5822 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_5824 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse4 (select (select (store (store |c_#memory_$Pointer$#2.offset| .cse0 v_ArrVal_5821) (select (select (store |c_#memory_$Pointer$#2.base| .cse0 v_ArrVal_5822) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2) v_ArrVal_5824) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (bvule (bvadd (_ bv8 32) .cse4) (bvadd (_ bv12 32) .cse4))))))) is different from false [2024-11-08 18:03:17,245 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-08 18:03:17,245 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [247349067] [2024-11-08 18:03:17,246 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [247349067] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 18:03:17,246 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1438902150] [2024-11-08 18:03:17,246 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:03:17,246 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-08 18:03:17,247 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a7b4d5e-c5d7-404b-8918-c4de76df1de6/bin/uautomizer-verify-jihMAELWvX/cvc4 [2024-11-08 18:03:17,250 INFO L229 MonitoredProcess]: Starting monitored process 40 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a7b4d5e-c5d7-404b-8918-c4de76df1de6/bin/uautomizer-verify-jihMAELWvX/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-08 18:03:17,252 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a7b4d5e-c5d7-404b-8918-c4de76df1de6/bin/uautomizer-verify-jihMAELWvX/cvc4 --incremental --print-success --lang smt (40)] Waiting until timeout for monitored process [2024-11-08 18:05:34,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:05:35,010 INFO L255 TraceCheckSpWp]: Trace formula consists of 865 conjuncts, 115 conjuncts are in the unsatisfiable core [2024-11-08 18:05:35,024 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 18:05:35,034 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 [2024-11-08 18:05:35,447 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 [2024-11-08 18:05:35,492 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2024-11-08 18:05:35,493 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 [2024-11-08 18:05:35,523 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 [2024-11-08 18:05:35,537 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 [2024-11-08 18:05:35,659 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 [2024-11-08 18:05:35,668 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 [2024-11-08 18:05:37,564 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-08 18:05:37,565 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 [2024-11-08 18:05:37,579 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 [2024-11-08 18:05:37,743 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-08 18:05:37,744 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 [2024-11-08 18:05:37,761 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 [2024-11-08 18:05:37,887 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-08 18:05:37,888 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 [2024-11-08 18:05:37,899 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 [2024-11-08 18:05:37,959 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 [2024-11-08 18:05:37,968 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 [2024-11-08 18:05:37,983 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 946 trivial. 0 not checked. [2024-11-08 18:05:37,983 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 18:05:38,077 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (and (forall ((v_ArrVal_6403 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (select (store |c_#memory_$Pointer$#2.offset| |c_ULTIMATE.start_main_#t~mem39#1.base| v_ArrVal_6403) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (bvule (bvadd .cse0 (_ bv8 32)) (bvadd .cse0 (_ bv12 32))))) (forall ((v_ArrVal_6402 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_6403 (Array (_ BitVec 32) (_ BitVec 32)))) (bvule (bvadd (select (select (store |c_#memory_$Pointer$#2.offset| |c_ULTIMATE.start_main_#t~mem39#1.base| v_ArrVal_6403) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) (_ bv12 32)) (select |c_#length| (select (select (store |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_main_#t~mem39#1.base| v_ArrVal_6402) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))))) is different from false [2024-11-08 18:05:38,122 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse2 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (let ((.cse1 (select (select |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (and (forall ((v_ArrVal_6403 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (select (store |c_#memory_$Pointer$#2.offset| .cse1 v_ArrVal_6403) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (bvule (bvadd .cse0 (_ bv8 32)) (bvadd .cse0 (_ bv12 32))))) (forall ((v_ArrVal_6402 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_6403 (Array (_ BitVec 32) (_ BitVec 32)))) (bvule (bvadd (select (select (store |c_#memory_$Pointer$#2.offset| .cse1 v_ArrVal_6403) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2) (_ bv12 32)) (select |c_#length| (select (select (store |c_#memory_$Pointer$#2.base| .cse1 v_ArrVal_6402) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))))))) is different from false [2024-11-08 18:05:38,215 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (and (forall ((v_ArrVal_6400 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_6401 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_6402 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_6403 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse2 (store |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_main_#t~mem38#1.base| v_ArrVal_6401))) (let ((.cse0 (select (select .cse2 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (bvule (bvadd (select (select (store (store |c_#memory_$Pointer$#2.offset| |c_ULTIMATE.start_main_#t~mem38#1.base| v_ArrVal_6400) .cse0 v_ArrVal_6403) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) (_ bv12 32)) (select |c_#length| (select (select (store .cse2 .cse0 v_ArrVal_6402) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))))) (forall ((v_ArrVal_6400 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_6401 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_6403 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse3 (select (select (store (store |c_#memory_$Pointer$#2.offset| |c_ULTIMATE.start_main_#t~mem38#1.base| v_ArrVal_6400) (select (select (store |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_main_#t~mem38#1.base| v_ArrVal_6401) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_6403) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (bvule (bvadd .cse3 (_ bv8 32)) (bvadd .cse3 (_ bv12 32))))))) is different from false [2024-11-08 18:05:38,333 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse2 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (let ((.cse0 (select (select |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (and (forall ((v_ArrVal_6400 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_6401 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_6402 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_6403 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse3 (store |c_#memory_$Pointer$#2.base| .cse0 v_ArrVal_6401))) (let ((.cse1 (select (select .cse3 |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (bvule (bvadd (_ bv12 32) (select (select (store (store |c_#memory_$Pointer$#2.offset| .cse0 v_ArrVal_6400) .cse1 v_ArrVal_6403) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2)) (select |c_#length| (select (select (store .cse3 .cse1 v_ArrVal_6402) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2)))))) (forall ((v_ArrVal_6400 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_6401 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_6403 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse4 (select (select (store (store |c_#memory_$Pointer$#2.offset| .cse0 v_ArrVal_6400) (select (select (store |c_#memory_$Pointer$#2.base| .cse0 v_ArrVal_6401) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2) v_ArrVal_6403) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (bvule (bvadd (_ bv8 32) .cse4) (bvadd (_ bv12 32) .cse4))))))) is different from false [2024-11-08 18:05:40,814 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse3 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (and (forall ((v_ArrVal_6494 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_6400 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_6401 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_6403 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_6495 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (select (let ((.cse2 (store |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_main_#t~mem36#1.base| v_ArrVal_6495))) (let ((.cse1 (select (select .cse2 |c_ULTIMATE.start_main_~user~0#1.base|) .cse3))) (store (store (store |c_#memory_$Pointer$#2.offset| |c_ULTIMATE.start_main_#t~mem36#1.base| v_ArrVal_6494) .cse1 v_ArrVal_6400) (select (select (store .cse2 .cse1 v_ArrVal_6401) |c_ULTIMATE.start_main_~user~0#1.base|) .cse3) v_ArrVal_6403))) |c_ULTIMATE.start_main_~user~0#1.base|) .cse3))) (bvule (bvadd (_ bv8 32) .cse0) (bvadd (_ bv12 32) .cse0)))) (forall ((v_ArrVal_6494 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_6400 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_6401 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_6402 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_6403 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_6495 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse7 (store |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_main_#t~mem36#1.base| v_ArrVal_6495))) (let ((.cse4 (select (select .cse7 |c_ULTIMATE.start_main_~user~0#1.base|) .cse3))) (let ((.cse6 (store .cse7 .cse4 v_ArrVal_6401))) (let ((.cse5 (select (select .cse6 |c_ULTIMATE.start_main_~user~0#1.base|) .cse3))) (bvule (bvadd (_ bv12 32) (select (select (store (store (store |c_#memory_$Pointer$#2.offset| |c_ULTIMATE.start_main_#t~mem36#1.base| v_ArrVal_6494) .cse4 v_ArrVal_6400) .cse5 v_ArrVal_6403) |c_ULTIMATE.start_main_~user~0#1.base|) .cse3)) (select |c_#length| (select (select (store .cse6 .cse5 v_ArrVal_6402) |c_ULTIMATE.start_main_~user~0#1.base|) .cse3)))))))))) is different from false [2024-11-08 18:05:40,829 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1438902150] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 18:05:40,829 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-08 18:05:40,829 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 10 [2024-11-08 18:05:40,830 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [532294156] [2024-11-08 18:05:40,830 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-08 18:05:40,830 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-08 18:05:40,830 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-08 18:05:40,831 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-08 18:05:40,831 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=165, Unknown=23, NotChecked=264, Total=506 [2024-11-08 18:05:40,831 INFO L87 Difference]: Start difference. First operand 1193 states and 1279 transitions. Second operand has 11 states, 9 states have (on average 9.0) internal successors, (81), 11 states have internal predecessors, (81), 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) [2024-11-08 18:06:06,931 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 18:06:06,931 INFO L93 Difference]: Finished difference Result 1565 states and 1679 transitions. [2024-11-08 18:06:06,931 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-08 18:06:06,932 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 9 states have (on average 9.0) internal successors, (81), 11 states have internal predecessors, (81), 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 125 [2024-11-08 18:06:06,932 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 18:06:06,934 INFO L225 Difference]: With dead ends: 1565 [2024-11-08 18:06:06,934 INFO L226 Difference]: Without dead ends: 1565 [2024-11-08 18:06:06,934 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 274 GetRequests, 244 SyntacticMatches, 3 SemanticMatches, 27 ConstructedPredicates, 8 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 4.9s TimeCoverageRelationStatistics Valid=94, Invalid=335, Unknown=23, NotChecked=360, Total=812 [2024-11-08 18:06:06,935 INFO L432 NwaCegarLoop]: 681 mSDtfsCounter, 709 mSDsluCounter, 3081 mSDsCounter, 0 mSdLazyCounter, 5203 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 22.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 713 SdHoareTripleChecker+Valid, 3762 SdHoareTripleChecker+Invalid, 5210 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 5203 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 24.7s IncrementalHoareTripleChecker+Time [2024-11-08 18:06:06,935 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [713 Valid, 3762 Invalid, 5210 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [7 Valid, 5203 Invalid, 0 Unknown, 0 Unchecked, 24.7s Time] [2024-11-08 18:06:06,937 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1565 states. [2024-11-08 18:06:06,949 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1565 to 1192. [2024-11-08 18:06:06,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1192 states, 762 states have (on average 1.6601049868766404) internal successors, (1265), 1182 states have internal predecessors, (1265), 6 states have call successors, (6), 3 states have call predecessors, (6), 4 states have return successors, (7), 6 states have call predecessors, (7), 6 states have call successors, (7) [2024-11-08 18:06:06,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1192 states to 1192 states and 1278 transitions. [2024-11-08 18:06:06,952 INFO L78 Accepts]: Start accepts. Automaton has 1192 states and 1278 transitions. Word has length 125 [2024-11-08 18:06:06,952 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 18:06:06,952 INFO L471 AbstractCegarLoop]: Abstraction has 1192 states and 1278 transitions. [2024-11-08 18:06:06,952 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 9 states have (on average 9.0) internal successors, (81), 11 states have internal predecessors, (81), 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) [2024-11-08 18:06:06,953 INFO L276 IsEmpty]: Start isEmpty. Operand 1192 states and 1278 transitions. [2024-11-08 18:06:06,954 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2024-11-08 18:06:06,954 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 18:06:06,954 INFO L215 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 18:06:06,992 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a7b4d5e-c5d7-404b-8918-c4de76df1de6/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Forceful destruction successful, exit code 0 [2024-11-08 18:06:07,208 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a7b4d5e-c5d7-404b-8918-c4de76df1de6/bin/uautomizer-verify-jihMAELWvX/cvc4 --incremental --print-success --lang smt (40)] Forceful destruction successful, exit code 0 [2024-11-08 18:06:07,355 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 39 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a7b4d5e-c5d7-404b-8918-c4de76df1de6/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,40 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a7b4d5e-c5d7-404b-8918-c4de76df1de6/bin/uautomizer-verify-jihMAELWvX/cvc4 --incremental --print-success --lang smt [2024-11-08 18:06:07,355 INFO L396 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr92REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 627 more)] === [2024-11-08 18:06:07,355 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:06:07,355 INFO L85 PathProgramCache]: Analyzing trace with hash 292808187, now seen corresponding path program 1 times [2024-11-08 18:06:07,356 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-08 18:06:07,356 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [543809901] [2024-11-08 18:06:07,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:06:07,356 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 18:06:07,356 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a7b4d5e-c5d7-404b-8918-c4de76df1de6/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 18:06:07,358 INFO L229 MonitoredProcess]: Starting monitored process 41 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a7b4d5e-c5d7-404b-8918-c4de76df1de6/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 18:06:07,360 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a7b4d5e-c5d7-404b-8918-c4de76df1de6/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Waiting until timeout for monitored process [2024-11-08 18:06:08,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:06:08,229 INFO L255 TraceCheckSpWp]: Trace formula consists of 894 conjuncts, 62 conjuncts are in the unsatisfiable core [2024-11-08 18:06:08,238 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 18:06:08,246 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 [2024-11-08 18:06:08,693 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2024-11-08 18:06:08,694 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 [2024-11-08 18:06:08,730 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 [2024-11-08 18:06:09,615 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-08 18:06:09,615 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 [2024-11-08 18:06:09,759 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-08 18:06:09,760 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 [2024-11-08 18:06:09,937 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-08 18:06:09,938 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 [2024-11-08 18:06:10,100 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-08 18:06:10,101 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 [2024-11-08 18:06:10,224 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 [2024-11-08 18:06:10,293 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 946 trivial. 0 not checked. [2024-11-08 18:06:10,293 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 18:06:10,420 INFO L349 Elim1Store]: treesize reduction 7, result has 63.2 percent of original size [2024-11-08 18:06:10,420 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 [2024-11-08 18:06:10,435 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_6949 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_ULTIMATE.start_main_#t~mem40#1.base| (select (select (store |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_main_#t~mem40#1.base| v_ArrVal_6949) |c_ULTIMATE.start_main_~user~0#1.base|) (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|)))) is different from false [2024-11-08 18:06:10,454 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_6949 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (let ((.cse0 (select (select |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (= (select (select (store |c_#memory_$Pointer$#2.base| .cse0 v_ArrVal_6949) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) .cse0)))) is different from false [2024-11-08 18:06:10,493 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_6948 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_6949 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse1 (store |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_main_#t~mem39#1.base| v_ArrVal_6948)) (.cse2 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (let ((.cse0 (select (select .cse1 |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (= .cse0 (select (select (store .cse1 .cse0 v_ArrVal_6949) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))))) is different from false [2024-11-08 18:06:10,522 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_6948 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_6949 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse2 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (let ((.cse1 (store |c_#memory_$Pointer$#2.base| (select (select |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse2) v_ArrVal_6948))) (let ((.cse0 (select (select .cse1 |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (= .cse0 (select (select (store .cse1 .cse0 v_ArrVal_6949) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2)))))) is different from false [2024-11-08 18:06:10,568 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_6947 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_6948 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_6949 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse2 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (let ((.cse1 (let ((.cse3 (store |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_main_#t~mem38#1.base| v_ArrVal_6947))) (store .cse3 (select (select .cse3 |c_ULTIMATE.start_main_~user~0#1.base|) .cse2) v_ArrVal_6948)))) (let ((.cse0 (select (select .cse1 |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (= .cse0 (select (select (store .cse1 .cse0 v_ArrVal_6949) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2)))))) is different from false [2024-11-08 18:06:10,601 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_6947 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_6948 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_6949 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse2 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (let ((.cse0 (let ((.cse3 (store |c_#memory_$Pointer$#2.base| (select (select |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse2) v_ArrVal_6947))) (store .cse3 (select (select .cse3 |c_ULTIMATE.start_main_~user~0#1.base|) .cse2) v_ArrVal_6948)))) (let ((.cse1 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (= (select (select (store .cse0 .cse1 v_ArrVal_6949) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2) .cse1))))) is different from false [2024-11-08 18:06:11,382 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_6947 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_6948 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_6949 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_6995 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse2 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (let ((.cse1 (let ((.cse3 (let ((.cse4 (store |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_main_#t~mem36#1.base| v_ArrVal_6995))) (store .cse4 (select (select .cse4 |c_ULTIMATE.start_main_~user~0#1.base|) .cse2) v_ArrVal_6947)))) (store .cse3 (select (select .cse3 |c_ULTIMATE.start_main_~user~0#1.base|) .cse2) v_ArrVal_6948)))) (let ((.cse0 (select (select .cse1 |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (= .cse0 (select (select (store .cse1 .cse0 v_ArrVal_6949) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2)))))) is different from false [2024-11-08 18:06:11,387 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-08 18:06:11,387 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [543809901] [2024-11-08 18:06:11,387 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [543809901] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 18:06:11,387 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1408955209] [2024-11-08 18:06:11,387 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:06:11,387 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-08 18:06:11,388 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a7b4d5e-c5d7-404b-8918-c4de76df1de6/bin/uautomizer-verify-jihMAELWvX/cvc4 [2024-11-08 18:06:11,389 INFO L229 MonitoredProcess]: Starting monitored process 42 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a7b4d5e-c5d7-404b-8918-c4de76df1de6/bin/uautomizer-verify-jihMAELWvX/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-08 18:06:11,390 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a7b4d5e-c5d7-404b-8918-c4de76df1de6/bin/uautomizer-verify-jihMAELWvX/cvc4 --incremental --print-success --lang smt (42)] Waiting until timeout for monitored process [2024-11-08 18:06:53,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:06:53,926 INFO L255 TraceCheckSpWp]: Trace formula consists of 894 conjuncts, 66 conjuncts are in the unsatisfiable core [2024-11-08 18:06:53,936 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 18:06:53,947 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 [2024-11-08 18:06:54,521 INFO L349 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2024-11-08 18:06:54,521 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 [2024-11-08 18:06:54,669 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 [2024-11-08 18:06:55,020 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 [2024-11-08 18:06:57,584 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-08 18:06:57,584 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 [2024-11-08 18:06:57,960 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-08 18:06:57,960 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 [2024-11-08 18:06:58,227 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-08 18:06:58,228 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 [2024-11-08 18:06:58,504 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-08 18:06:58,504 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 [2024-11-08 18:06:58,568 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 [2024-11-08 18:06:58,721 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 946 trivial. 0 not checked. [2024-11-08 18:06:58,722 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 18:06:58,977 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_7450 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (_ bv1 1) (select |c_#valid| (let ((.cse0 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (store |c_#memory_$Pointer$#2.base| (select (select |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse0) v_ArrVal_7450) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0)))))) is different from false [2024-11-08 18:06:59,008 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_7450 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7449 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (_ bv1 1) (select |c_#valid| (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (let ((.cse0 (store |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_main_#t~mem39#1.base| v_ArrVal_7449))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_7450)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))))) is different from false [2024-11-08 18:06:59,029 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_7450 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7449 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (_ bv1 1) (select |c_#valid| (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (let ((.cse0 (store |c_#memory_$Pointer$#2.base| (select (select |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_7449))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_7450)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))))) is different from false [2024-11-08 18:06:59,063 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_7450 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7449 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7448 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (_ bv1 1) (select |c_#valid| (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (let ((.cse0 (let ((.cse2 (store |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_main_#t~mem38#1.base| v_ArrVal_7448))) (store .cse2 (select (select .cse2 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_7449)))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_7450)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))))) is different from false [2024-11-08 18:06:59,088 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_7450 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7449 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7448 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (_ bv1 1) (select |c_#valid| (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (let ((.cse0 (let ((.cse2 (store |c_#memory_$Pointer$#2.base| (select (select |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_7448))) (store .cse2 (select (select .cse2 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_7449)))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_7450)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))))) is different from false [2024-11-08 18:06:59,852 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_7450 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7449 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7448 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7496 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (_ bv1 1) (select |c_#valid| (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (let ((.cse0 (let ((.cse2 (let ((.cse3 (store |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_main_#t~mem36#1.base| v_ArrVal_7496))) (store .cse3 (select (select .cse3 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_7448)))) (store .cse2 (select (select .cse2 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_7449)))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_7450)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))))) is different from false [2024-11-08 18:06:59,859 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1408955209] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 18:06:59,859 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-08 18:06:59,859 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11] total 21 [2024-11-08 18:06:59,859 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [648354639] [2024-11-08 18:06:59,859 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-08 18:06:59,860 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2024-11-08 18:06:59,860 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-08 18:06:59,861 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2024-11-08 18:06:59,861 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=114, Invalid=467, Unknown=23, NotChecked=728, Total=1332 [2024-11-08 18:06:59,861 INFO L87 Difference]: Start difference. First operand 1192 states and 1278 transitions. Second operand has 22 states, 19 states have (on average 5.684210526315789) internal successors, (108), 22 states have internal predecessors, (108), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-08 18:07:17,727 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 18:07:17,727 INFO L93 Difference]: Finished difference Result 1566 states and 1680 transitions. [2024-11-08 18:07:17,727 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-08 18:07:17,728 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 19 states have (on average 5.684210526315789) internal successors, (108), 22 states have internal predecessors, (108), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 128 [2024-11-08 18:07:17,728 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 18:07:17,730 INFO L225 Difference]: With dead ends: 1566 [2024-11-08 18:07:17,731 INFO L226 Difference]: Without dead ends: 1566 [2024-11-08 18:07:17,731 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 281 GetRequests, 244 SyntacticMatches, 1 SemanticMatches, 36 ConstructedPredicates, 13 IntricatePredicates, 0 DeprecatedPredicates, 119 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=123, Invalid=506, Unknown=23, NotChecked=754, Total=1406 [2024-11-08 18:07:17,732 INFO L432 NwaCegarLoop]: 674 mSDtfsCounter, 710 mSDsluCounter, 4457 mSDsCounter, 0 mSdLazyCounter, 3871 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 16.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 715 SdHoareTripleChecker+Valid, 5131 SdHoareTripleChecker+Invalid, 3887 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 3871 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 17.6s IncrementalHoareTripleChecker+Time [2024-11-08 18:07:17,732 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [715 Valid, 5131 Invalid, 3887 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [16 Valid, 3871 Invalid, 0 Unknown, 0 Unchecked, 17.6s Time] [2024-11-08 18:07:17,734 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1566 states. [2024-11-08 18:07:17,747 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1566 to 1191. [2024-11-08 18:07:17,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1191 states, 762 states have (on average 1.6587926509186353) internal successors, (1264), 1181 states have internal predecessors, (1264), 6 states have call successors, (6), 3 states have call predecessors, (6), 4 states have return successors, (7), 6 states have call predecessors, (7), 6 states have call successors, (7) [2024-11-08 18:07:17,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1191 states to 1191 states and 1277 transitions. [2024-11-08 18:07:17,751 INFO L78 Accepts]: Start accepts. Automaton has 1191 states and 1277 transitions. Word has length 128 [2024-11-08 18:07:17,752 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 18:07:17,752 INFO L471 AbstractCegarLoop]: Abstraction has 1191 states and 1277 transitions. [2024-11-08 18:07:17,752 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 19 states have (on average 5.684210526315789) internal successors, (108), 22 states have internal predecessors, (108), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-08 18:07:17,752 INFO L276 IsEmpty]: Start isEmpty. Operand 1191 states and 1277 transitions. [2024-11-08 18:07:17,753 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2024-11-08 18:07:17,753 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 18:07:17,753 INFO L215 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 18:07:17,791 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a7b4d5e-c5d7-404b-8918-c4de76df1de6/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Ended with exit code 0 [2024-11-08 18:07:17,995 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a7b4d5e-c5d7-404b-8918-c4de76df1de6/bin/uautomizer-verify-jihMAELWvX/cvc4 --incremental --print-success --lang smt (42)] Forceful destruction successful, exit code 0 [2024-11-08 18:07:18,154 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 41 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a7b4d5e-c5d7-404b-8918-c4de76df1de6/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true,42 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a7b4d5e-c5d7-404b-8918-c4de76df1de6/bin/uautomizer-verify-jihMAELWvX/cvc4 --incremental --print-success --lang smt [2024-11-08 18:07:18,154 INFO L396 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr93REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 627 more)] === [2024-11-08 18:07:18,155 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 18:07:18,155 INFO L85 PathProgramCache]: Analyzing trace with hash 292808188, now seen corresponding path program 1 times [2024-11-08 18:07:18,155 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-08 18:07:18,155 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1305306087] [2024-11-08 18:07:18,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:07:18,156 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 18:07:18,156 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a7b4d5e-c5d7-404b-8918-c4de76df1de6/bin/uautomizer-verify-jihMAELWvX/z3 [2024-11-08 18:07:18,157 INFO L229 MonitoredProcess]: Starting monitored process 43 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a7b4d5e-c5d7-404b-8918-c4de76df1de6/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-08 18:07:18,158 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a7b4d5e-c5d7-404b-8918-c4de76df1de6/bin/uautomizer-verify-jihMAELWvX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Waiting until timeout for monitored process [2024-11-08 18:07:18,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 18:07:19,006 INFO L255 TraceCheckSpWp]: Trace formula consists of 894 conjuncts, 116 conjuncts are in the unsatisfiable core [2024-11-08 18:07:19,019 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 18:07:19,420 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2024-11-08 18:07:19,420 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 [2024-11-08 18:07:19,436 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 [2024-11-08 18:07:19,488 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 [2024-11-08 18:07:19,498 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 [2024-11-08 18:07:19,771 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 [2024-11-08 18:07:19,780 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 [2024-11-08 18:07:21,672 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-08 18:07:21,673 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 [2024-11-08 18:07:21,683 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 [2024-11-08 18:07:21,951 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-08 18:07:21,952 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 [2024-11-08 18:07:21,962 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 [2024-11-08 18:07:22,201 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-08 18:07:22,202 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 [2024-11-08 18:07:22,221 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 [2024-11-08 18:07:22,472 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-08 18:07:22,473 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 [2024-11-08 18:07:22,483 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 [2024-11-08 18:07:22,571 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 [2024-11-08 18:07:22,596 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 [2024-11-08 18:07:22,715 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 946 trivial. 0 not checked. [2024-11-08 18:07:22,715 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 18:07:23,281 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse2 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (let ((.cse1 (select (select |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (and (forall ((v_ArrVal_7998 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (select (store |c_#memory_$Pointer$#2.offset| .cse1 v_ArrVal_7998) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (bvule (bvadd (_ bv20 32) .cse0) (bvadd (_ bv24 32) .cse0)))) (forall ((v_ArrVal_7999 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7998 (Array (_ BitVec 32) (_ BitVec 32)))) (bvule (bvadd (_ bv24 32) (select (select (store |c_#memory_$Pointer$#2.offset| .cse1 v_ArrVal_7998) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2)) (select |c_#length| (select (select (store |c_#memory_$Pointer$#2.base| .cse1 v_ArrVal_7999) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))))))) is different from false [2024-11-08 18:07:23,415 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (and (forall ((v_ArrVal_7998 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7997 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7996 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (select (store (store |c_#memory_$Pointer$#2.offset| |c_ULTIMATE.start_main_#t~mem39#1.base| v_ArrVal_7996) (select (select (store |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_main_#t~mem39#1.base| v_ArrVal_7997) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_7998) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (bvule (bvadd (_ bv20 32) .cse0) (bvadd (_ bv24 32) .cse0)))) (forall ((v_ArrVal_7999 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7998 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7997 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7996 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse3 (store |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_main_#t~mem39#1.base| v_ArrVal_7997))) (let ((.cse2 (select (select .cse3 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (bvule (bvadd (_ bv24 32) (select (select (store (store |c_#memory_$Pointer$#2.offset| |c_ULTIMATE.start_main_#t~mem39#1.base| v_ArrVal_7996) .cse2 v_ArrVal_7998) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)) (select |c_#length| (select (select (store .cse3 .cse2 v_ArrVal_7999) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))))))) is different from false [2024-11-08 18:07:23,484 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse2 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (let ((.cse0 (select (select |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (and (forall ((v_ArrVal_7999 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7998 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7997 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7996 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse3 (store |c_#memory_$Pointer$#2.base| .cse0 v_ArrVal_7997))) (let ((.cse1 (select (select .cse3 |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (bvule (bvadd (_ bv24 32) (select (select (store (store |c_#memory_$Pointer$#2.offset| .cse0 v_ArrVal_7996) .cse1 v_ArrVal_7998) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2)) (select |c_#length| (select (select (store .cse3 .cse1 v_ArrVal_7999) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2)))))) (forall ((v_ArrVal_7998 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7997 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7996 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse4 (select (select (store (store |c_#memory_$Pointer$#2.offset| .cse0 v_ArrVal_7996) (select (select (store |c_#memory_$Pointer$#2.base| .cse0 v_ArrVal_7997) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2) v_ArrVal_7998) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (bvule (bvadd (_ bv20 32) .cse4) (bvadd (_ bv24 32) .cse4))))))) is different from false [2024-11-08 18:07:23,748 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse2 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (and (forall ((v_ArrVal_7999 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7998 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7997 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7996 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7995 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7994 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse4 (store |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_main_#t~mem38#1.base| v_ArrVal_7994))) (let ((.cse0 (select (select .cse4 |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (let ((.cse3 (store .cse4 .cse0 v_ArrVal_7997))) (let ((.cse1 (select (select .cse3 |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (bvule (bvadd (_ bv24 32) (select (select (store (store (store |c_#memory_$Pointer$#2.offset| |c_ULTIMATE.start_main_#t~mem38#1.base| v_ArrVal_7995) .cse0 v_ArrVal_7996) .cse1 v_ArrVal_7998) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2)) (select |c_#length| (select (select (store .cse3 .cse1 v_ArrVal_7999) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2)))))))) (forall ((v_ArrVal_7998 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7997 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7996 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7995 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7994 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse5 (select (select (let ((.cse7 (store |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_main_#t~mem38#1.base| v_ArrVal_7994))) (let ((.cse6 (select (select .cse7 |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (store (store (store |c_#memory_$Pointer$#2.offset| |c_ULTIMATE.start_main_#t~mem38#1.base| v_ArrVal_7995) .cse6 v_ArrVal_7996) (select (select (store .cse7 .cse6 v_ArrVal_7997) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2) v_ArrVal_7998))) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (bvule (bvadd (_ bv20 32) .cse5) (bvadd (_ bv24 32) .cse5)))))) is different from false [2024-11-08 18:07:31,834 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse3 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (and (forall ((v_ArrVal_7999 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7998 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8091 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7997 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8090 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7996 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7995 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7994 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse6 (store |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_main_#t~mem36#1.base| v_ArrVal_8090))) (let ((.cse0 (select (select .cse6 |c_ULTIMATE.start_main_~user~0#1.base|) .cse3))) (let ((.cse5 (store .cse6 .cse0 v_ArrVal_7994))) (let ((.cse1 (select (select .cse5 |c_ULTIMATE.start_main_~user~0#1.base|) .cse3))) (let ((.cse4 (store .cse5 .cse1 v_ArrVal_7997))) (let ((.cse2 (select (select .cse4 |c_ULTIMATE.start_main_~user~0#1.base|) .cse3))) (bvule (bvadd (_ bv24 32) (select (select (store (store (store (store |c_#memory_$Pointer$#2.offset| |c_ULTIMATE.start_main_#t~mem36#1.base| v_ArrVal_8091) .cse0 v_ArrVal_7995) .cse1 v_ArrVal_7996) .cse2 v_ArrVal_7998) |c_ULTIMATE.start_main_~user~0#1.base|) .cse3)) (select |c_#length| (select (select (store .cse4 .cse2 v_ArrVal_7999) |c_ULTIMATE.start_main_~user~0#1.base|) .cse3)))))))))) (forall ((v_ArrVal_7998 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8091 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7997 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8090 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7996 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7995 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7994 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse7 (select (select (let ((.cse11 (store |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_main_#t~mem36#1.base| v_ArrVal_8090))) (let ((.cse8 (select (select .cse11 |c_ULTIMATE.start_main_~user~0#1.base|) .cse3))) (let ((.cse10 (store .cse11 .cse8 v_ArrVal_7994))) (let ((.cse9 (select (select .cse10 |c_ULTIMATE.start_main_~user~0#1.base|) .cse3))) (store (store (store (store |c_#memory_$Pointer$#2.offset| |c_ULTIMATE.start_main_#t~mem36#1.base| v_ArrVal_8091) .cse8 v_ArrVal_7995) .cse9 v_ArrVal_7996) (select (select (store .cse10 .cse9 v_ArrVal_7997) |c_ULTIMATE.start_main_~user~0#1.base|) .cse3) v_ArrVal_7998))))) |c_ULTIMATE.start_main_~user~0#1.base|) .cse3))) (bvule (bvadd (_ bv20 32) .cse7) (bvadd (_ bv24 32) .cse7)))))) is different from false [2024-11-08 18:07:31,858 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-08 18:07:31,858 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1305306087] [2024-11-08 18:07:31,858 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1305306087] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 18:07:31,858 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [2096263327] [2024-11-08 18:07:31,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 18:07:31,859 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-08 18:07:31,859 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a7b4d5e-c5d7-404b-8918-c4de76df1de6/bin/uautomizer-verify-jihMAELWvX/cvc4 [2024-11-08 18:07:31,860 INFO L229 MonitoredProcess]: Starting monitored process 44 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a7b4d5e-c5d7-404b-8918-c4de76df1de6/bin/uautomizer-verify-jihMAELWvX/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-08 18:07:31,861 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7a7b4d5e-c5d7-404b-8918-c4de76df1de6/bin/uautomizer-verify-jihMAELWvX/cvc4 --incremental --print-success --lang smt (44)] Waiting until timeout for monitored process