./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/uthash-2.0.2/uthash_BER_test10-3.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 826ab2ba Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f0054df-6fb0-4197-a6fa-b5e5f909ee14/bin/uautomizer-verify-qhAvR1uOyd/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f0054df-6fb0-4197-a6fa-b5e5f909ee14/bin/uautomizer-verify-qhAvR1uOyd/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f0054df-6fb0-4197-a6fa-b5e5f909ee14/bin/uautomizer-verify-qhAvR1uOyd/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f0054df-6fb0-4197-a6fa-b5e5f909ee14/bin/uautomizer-verify-qhAvR1uOyd/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_BER_test10-3.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f0054df-6fb0-4197-a6fa-b5e5f909ee14/bin/uautomizer-verify-qhAvR1uOyd/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f0054df-6fb0-4197-a6fa-b5e5f909ee14/bin/uautomizer-verify-qhAvR1uOyd --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 5577528c45849c92d31dcecadbfe6524610e7683d1e420d37b6f0ce59c6c59b8 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-826ab2b [2024-11-13 14:26:13,698 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-13 14:26:13,816 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f0054df-6fb0-4197-a6fa-b5e5f909ee14/bin/uautomizer-verify-qhAvR1uOyd/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2024-11-13 14:26:13,827 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-13 14:26:13,827 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-13 14:26:13,875 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-13 14:26:13,877 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-13 14:26:13,877 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-13 14:26:13,878 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-13 14:26:13,878 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-13 14:26:13,880 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-13 14:26:13,880 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-13 14:26:13,881 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-13 14:26:13,881 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-13 14:26:13,881 INFO L153 SettingsManager]: * Use SBE=true [2024-11-13 14:26:13,881 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-13 14:26:13,881 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-13 14:26:13,881 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-13 14:26:13,882 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-13 14:26:13,882 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-13 14:26:13,882 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-11-13 14:26:13,882 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-11-13 14:26:13,882 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-11-13 14:26:13,882 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-13 14:26:13,882 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-13 14:26:13,882 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-13 14:26:13,882 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-13 14:26:13,882 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-13 14:26:13,882 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-13 14:26:13,883 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-13 14:26:13,883 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-13 14:26:13,883 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-13 14:26:13,883 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-13 14:26:13,883 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-13 14:26:13,883 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-13 14:26:13,885 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-13 14:26:13,885 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-13 14:26:13,885 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-13 14:26:13,885 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-13 14:26:13,885 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-13 14:26:13,886 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-13 14:26:13,886 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-13 14:26:13,886 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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_0f0054df-6fb0-4197-a6fa-b5e5f909ee14/bin/uautomizer-verify-qhAvR1uOyd 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 -> 5577528c45849c92d31dcecadbfe6524610e7683d1e420d37b6f0ce59c6c59b8 [2024-11-13 14:26:14,301 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-13 14:26:14,315 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-13 14:26:14,318 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-13 14:26:14,320 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-13 14:26:14,320 INFO L274 PluginConnector]: CDTParser initialized [2024-11-13 14:26:14,321 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f0054df-6fb0-4197-a6fa-b5e5f909ee14/bin/uautomizer-verify-qhAvR1uOyd/../../sv-benchmarks/c/uthash-2.0.2/uthash_BER_test10-3.i Unable to find full path for "g++" [2024-11-13 14:26:16,313 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-13 14:26:16,801 INFO L384 CDTParser]: Found 1 translation units. [2024-11-13 14:26:16,802 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f0054df-6fb0-4197-a6fa-b5e5f909ee14/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test10-3.i [2024-11-13 14:26:16,841 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f0054df-6fb0-4197-a6fa-b5e5f909ee14/bin/uautomizer-verify-qhAvR1uOyd/data/cbe0c9de4/cff5bdc25e264575b148aeb61ff9ed89/FLAG940f590e3 [2024-11-13 14:26:16,867 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f0054df-6fb0-4197-a6fa-b5e5f909ee14/bin/uautomizer-verify-qhAvR1uOyd/data/cbe0c9de4/cff5bdc25e264575b148aeb61ff9ed89 [2024-11-13 14:26:16,871 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-13 14:26:16,874 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-13 14:26:16,875 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-13 14:26:16,875 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-13 14:26:16,881 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-13 14:26:16,882 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 02:26:16" (1/1) ... [2024-11-13 14:26:16,885 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1368b064 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:26:16, skipping insertion in model container [2024-11-13 14:26:16,886 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 02:26:16" (1/1) ... [2024-11-13 14:26:16,956 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-13 14:26:17,469 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-13 14:26:17,508 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-13 14:26:17,512 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-13 14:26:17,520 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-13 14:26:17,531 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-13 14:26:17,571 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-13 14:26:17,573 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-13 14:26:17,578 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-13 14:26:17,586 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-13 14:26:17,616 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-13 14:26:17,616 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-13 14:26:17,619 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-13 14:26:17,619 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-13 14:26:17,649 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-13 14:26:17,649 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-13 14:26:17,652 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-13 14:26:17,652 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-13 14:26:17,669 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-13 14:26:17,669 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-13 14:26:17,672 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-13 14:26:17,672 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-13 14:26:17,687 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-13 14:26:17,688 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-13 14:26:17,690 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-13 14:26:17,690 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-13 14:26:17,692 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-13 14:26:17,695 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-13 14:26:17,698 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-13 14:26:17,700 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-13 14:26:17,702 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-13 14:26:17,710 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-13 14:26:17,711 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-13 14:26:17,712 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-13 14:26:17,713 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-13 14:26:17,716 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-13 14:26:17,731 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-13 14:26:17,758 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) [2024-11-13 14:26:17,762 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@55c49513 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:26:17, skipping insertion in model container [2024-11-13 14:26:17,762 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-13 14:26:17,763 INFO L186 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2024-11-13 14:26:17,765 INFO L158 Benchmark]: Toolchain (without parser) took 890.48ms. Allocated memory is still 142.6MB. Free memory was 116.3MB in the beginning and 86.6MB in the end (delta: 29.7MB). Peak memory consumption was 33.6MB. Max. memory is 16.1GB. [2024-11-13 14:26:17,765 INFO L158 Benchmark]: CDTParser took 1.18ms. Allocated memory is still 142.6MB. Free memory is still 80.7MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-13 14:26:17,766 INFO L158 Benchmark]: CACSL2BoogieTranslator took 887.87ms. Allocated memory is still 142.6MB. Free memory was 116.0MB in the beginning and 86.6MB in the end (delta: 29.4MB). Peak memory consumption was 33.6MB. Max. memory is 16.1GB. [2024-11-13 14:26:17,767 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 1.18ms. Allocated memory is still 142.6MB. Free memory is still 80.7MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 887.87ms. Allocated memory is still 142.6MB. Free memory was 116.0MB in the beginning and 86.6MB in the end (delta: 29.4MB). Peak memory consumption was 33.6MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 760]: 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/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f0054df-6fb0-4197-a6fa-b5e5f909ee14/bin/uautomizer-verify-qhAvR1uOyd/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f0054df-6fb0-4197-a6fa-b5e5f909ee14/bin/uautomizer-verify-qhAvR1uOyd/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f0054df-6fb0-4197-a6fa-b5e5f909ee14/bin/uautomizer-verify-qhAvR1uOyd/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f0054df-6fb0-4197-a6fa-b5e5f909ee14/bin/uautomizer-verify-qhAvR1uOyd/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_BER_test10-3.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f0054df-6fb0-4197-a6fa-b5e5f909ee14/bin/uautomizer-verify-qhAvR1uOyd/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f0054df-6fb0-4197-a6fa-b5e5f909ee14/bin/uautomizer-verify-qhAvR1uOyd --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 5577528c45849c92d31dcecadbfe6524610e7683d1e420d37b6f0ce59c6c59b8 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-826ab2b [2024-11-13 14:26:20,594 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-13 14:26:20,692 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f0054df-6fb0-4197-a6fa-b5e5f909ee14/bin/uautomizer-verify-qhAvR1uOyd/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2024-11-13 14:26:20,708 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-13 14:26:20,708 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-13 14:26:20,744 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-13 14:26:20,745 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-13 14:26:20,746 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-13 14:26:20,746 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-13 14:26:20,746 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-13 14:26:20,746 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-13 14:26:20,746 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-13 14:26:20,747 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-13 14:26:20,747 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-13 14:26:20,747 INFO L153 SettingsManager]: * Use SBE=true [2024-11-13 14:26:20,747 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-13 14:26:20,748 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-13 14:26:20,748 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-13 14:26:20,748 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-13 14:26:20,748 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-13 14:26:20,748 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-11-13 14:26:20,748 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-11-13 14:26:20,748 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-11-13 14:26:20,748 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-13 14:26:20,748 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-13 14:26:20,748 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2024-11-13 14:26:20,749 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-13 14:26:20,749 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2024-11-13 14:26:20,749 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-13 14:26:20,749 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-13 14:26:20,749 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-13 14:26:20,749 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-13 14:26:20,749 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-13 14:26:20,750 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-13 14:26:20,750 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-13 14:26:20,750 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-13 14:26:20,750 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-13 14:26:20,750 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-13 14:26:20,750 INFO L153 SettingsManager]: * Trace refinement strategy=FOX [2024-11-13 14:26:20,751 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2024-11-13 14:26:20,751 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-13 14:26:20,751 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-13 14:26:20,751 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-13 14:26:20,751 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-13 14:26:20,751 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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_0f0054df-6fb0-4197-a6fa-b5e5f909ee14/bin/uautomizer-verify-qhAvR1uOyd 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 -> 5577528c45849c92d31dcecadbfe6524610e7683d1e420d37b6f0ce59c6c59b8 [2024-11-13 14:26:21,065 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-13 14:26:21,074 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-13 14:26:21,077 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-13 14:26:21,078 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-13 14:26:21,079 INFO L274 PluginConnector]: CDTParser initialized [2024-11-13 14:26:21,080 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f0054df-6fb0-4197-a6fa-b5e5f909ee14/bin/uautomizer-verify-qhAvR1uOyd/../../sv-benchmarks/c/uthash-2.0.2/uthash_BER_test10-3.i Unable to find full path for "g++" [2024-11-13 14:26:23,211 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-13 14:26:23,641 INFO L384 CDTParser]: Found 1 translation units. [2024-11-13 14:26:23,645 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f0054df-6fb0-4197-a6fa-b5e5f909ee14/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test10-3.i [2024-11-13 14:26:23,672 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f0054df-6fb0-4197-a6fa-b5e5f909ee14/bin/uautomizer-verify-qhAvR1uOyd/data/de45928f2/f2bca5b3db744f10b852ab56d4cb7945/FLAG042330a0c [2024-11-13 14:26:23,694 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f0054df-6fb0-4197-a6fa-b5e5f909ee14/bin/uautomizer-verify-qhAvR1uOyd/data/de45928f2/f2bca5b3db744f10b852ab56d4cb7945 [2024-11-13 14:26:23,697 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-13 14:26:23,698 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-13 14:26:23,701 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-13 14:26:23,701 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-13 14:26:23,705 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-13 14:26:23,706 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 02:26:23" (1/1) ... [2024-11-13 14:26:23,707 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2fb20573 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:26:23, skipping insertion in model container [2024-11-13 14:26:23,709 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 02:26:23" (1/1) ... [2024-11-13 14:26:23,782 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-13 14:26:24,356 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-13 14:26:24,411 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-13 14:26:24,418 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-13 14:26:24,426 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-13 14:26:24,434 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-13 14:26:24,486 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-13 14:26:24,490 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-13 14:26:24,494 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-13 14:26:24,501 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-13 14:26:24,538 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-13 14:26:24,538 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-13 14:26:24,542 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-13 14:26:24,543 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-13 14:26:24,564 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-13 14:26:24,566 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-13 14:26:24,570 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-13 14:26:24,573 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-13 14:26:24,597 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-13 14:26:24,597 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-13 14:26:24,601 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-13 14:26:24,601 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-13 14:26:24,625 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-13 14:26:24,625 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-13 14:26:24,628 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-13 14:26:24,629 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-13 14:26:24,631 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-13 14:26:24,635 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-13 14:26:24,636 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-13 14:26:24,637 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-13 14:26:24,639 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-13 14:26:24,645 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-13 14:26:24,647 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-13 14:26:24,648 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-13 14:26:24,649 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-13 14:26:24,654 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-13 14:26:24,665 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-13 14:26:24,681 INFO L197 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2024-11-13 14:26:24,708 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-13 14:26:24,767 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-13 14:26:24,800 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-13 14:26:24,803 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-13 14:26:24,810 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-13 14:26:24,819 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-13 14:26:24,851 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-13 14:26:24,853 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-13 14:26:24,855 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-13 14:26:24,859 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-13 14:26:24,882 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-13 14:26:24,882 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-13 14:26:24,889 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-13 14:26:24,890 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-13 14:26:24,915 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-13 14:26:24,916 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-13 14:26:24,919 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-13 14:26:24,920 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-13 14:26:24,932 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-13 14:26:24,932 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-13 14:26:24,938 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-13 14:26:24,939 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-13 14:26:24,956 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-13 14:26:24,960 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-13 14:26:24,963 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-13 14:26:24,965 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-13 14:26:24,968 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-13 14:26:24,973 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-13 14:26:24,974 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-13 14:26:24,974 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-13 14:26:24,977 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-13 14:26:24,981 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-13 14:26:24,982 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-13 14:26:24,982 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-13 14:26:24,983 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-13 14:26:24,986 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-13 14:26:24,994 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-13 14:26:25,001 INFO L200 MainTranslator]: Completed pre-run [2024-11-13 14:26:25,214 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-13 14:26:25,259 INFO L204 MainTranslator]: Completed translation [2024-11-13 14:26:25,260 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:26:25 WrapperNode [2024-11-13 14:26:25,260 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-13 14:26:25,261 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-13 14:26:25,261 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-13 14:26:25,261 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-13 14:26:25,268 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:26:25" (1/1) ... [2024-11-13 14:26:25,312 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:26:25" (1/1) ... [2024-11-13 14:26:25,438 INFO L138 Inliner]: procedures = 180, calls = 606, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 2496 [2024-11-13 14:26:25,439 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-13 14:26:25,439 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-13 14:26:25,439 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-13 14:26:25,440 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-13 14:26:25,449 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:26:25" (1/1) ... [2024-11-13 14:26:25,449 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:26:25" (1/1) ... [2024-11-13 14:26:25,481 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:26:25" (1/1) ... [2024-11-13 14:26:25,763 INFO L175 MemorySlicer]: Split 574 memory accesses to 3 slices as follows [2, 466, 106]. 81 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0]. The 102 writes are split as follows [0, 98, 4]. [2024-11-13 14:26:25,764 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:26:25" (1/1) ... [2024-11-13 14:26:25,764 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:26:25" (1/1) ... [2024-11-13 14:26:25,876 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:26:25" (1/1) ... [2024-11-13 14:26:25,904 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:26:25" (1/1) ... [2024-11-13 14:26:25,919 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:26:25" (1/1) ... [2024-11-13 14:26:25,934 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:26:25" (1/1) ... [2024-11-13 14:26:25,949 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-13 14:26:25,951 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-13 14:26:25,951 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-13 14:26:25,952 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-13 14:26:25,954 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:26:25" (1/1) ... [2024-11-13 14:26:25,961 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-13 14:26:25,976 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f0054df-6fb0-4197-a6fa-b5e5f909ee14/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:26:25,991 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f0054df-6fb0-4197-a6fa-b5e5f909ee14/bin/uautomizer-verify-qhAvR1uOyd/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-13 14:26:25,995 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f0054df-6fb0-4197-a6fa-b5e5f909ee14/bin/uautomizer-verify-qhAvR1uOyd/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-13 14:26:26,032 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#0 [2024-11-13 14:26:26,033 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#1 [2024-11-13 14:26:26,033 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#2 [2024-11-13 14:26:26,033 INFO L130 BoogieDeclarations]: Found specification of procedure test_int_int [2024-11-13 14:26:26,033 INFO L138 BoogieDeclarations]: Found implementation of procedure test_int_int [2024-11-13 14:26:26,033 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#0 [2024-11-13 14:26:26,033 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#1 [2024-11-13 14:26:26,034 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#2 [2024-11-13 14:26:26,034 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-11-13 14:26:26,035 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-11-13 14:26:26,036 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#0 [2024-11-13 14:26:26,036 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#1 [2024-11-13 14:26:26,036 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#2 [2024-11-13 14:26:26,036 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#0 [2024-11-13 14:26:26,036 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#1 [2024-11-13 14:26:26,036 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#2 [2024-11-13 14:26:26,036 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-13 14:26:26,036 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-13 14:26:26,036 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2024-11-13 14:26:26,036 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2024-11-13 14:26:26,036 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2024-11-13 14:26:26,036 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-13 14:26:26,036 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2024-11-13 14:26:26,036 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2024-11-13 14:26:26,036 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2024-11-13 14:26:26,037 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-13 14:26:26,037 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#0 [2024-11-13 14:26:26,037 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#1 [2024-11-13 14:26:26,037 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#2 [2024-11-13 14:26:26,037 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2024-11-13 14:26:26,037 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#1 [2024-11-13 14:26:26,037 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#2 [2024-11-13 14:26:26,037 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-13 14:26:26,037 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-13 14:26:26,419 INFO L238 CfgBuilder]: Building ICFG [2024-11-13 14:26:26,422 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-13 14:26:26,521 WARN L781 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2024-11-13 14:26:26,556 WARN L781 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2024-11-13 14:26:26,587 WARN L781 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2024-11-13 14:26:37,709 INFO L? ?]: Removed 2433 outVars from TransFormulas that were not future-live. [2024-11-13 14:26:37,709 INFO L287 CfgBuilder]: Performing block encoding [2024-11-13 14:26:37,800 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-13 14:26:37,800 INFO L316 CfgBuilder]: Removed 168 assume(true) statements. [2024-11-13 14:26:37,800 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 02:26:37 BoogieIcfgContainer [2024-11-13 14:26:37,801 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-13 14:26:37,803 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-13 14:26:37,804 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-13 14:26:37,809 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-13 14:26:37,809 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.11 02:26:23" (1/3) ... [2024-11-13 14:26:37,810 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@ffd80d9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 02:26:37, skipping insertion in model container [2024-11-13 14:26:37,810 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:26:25" (2/3) ... [2024-11-13 14:26:37,810 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@ffd80d9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 02:26:37, skipping insertion in model container [2024-11-13 14:26:37,810 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 02:26:37" (3/3) ... [2024-11-13 14:26:37,812 INFO L112 eAbstractionObserver]: Analyzing ICFG uthash_BER_test10-3.i [2024-11-13 14:26:37,828 INFO L217 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-13 14:26:37,830 INFO L154 ceAbstractionStarter]: Applying trace abstraction to ICFG uthash_BER_test10-3.i that has 6 procedures, 2466 locations, 1 initial locations, 93 loop locations, and 1189 error locations. [2024-11-13 14:26:37,921 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-13 14:26:37,937 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;@5ed6fa82, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-13 14:26:37,938 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1189 error locations. [2024-11-13 14:26:37,951 INFO L276 IsEmpty]: Start isEmpty. Operand has 2456 states, 1255 states have (on average 2.201593625498008) internal successors, (2763), 2442 states have internal predecessors, (2763), 14 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (14), 11 states have call predecessors, (14), 14 states have call successors, (14) [2024-11-13 14:26:37,958 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2024-11-13 14:26:37,958 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:26:37,959 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1] [2024-11-13 14:26:37,959 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 1186 more)] === [2024-11-13 14:26:37,965 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:26:37,965 INFO L85 PathProgramCache]: Analyzing trace with hash 84472, now seen corresponding path program 1 times [2024-11-13 14:26:37,977 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-13 14:26:37,978 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [241403117] [2024-11-13 14:26:37,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:26:37,979 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:26:37,979 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f0054df-6fb0-4197-a6fa-b5e5f909ee14/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:26:37,982 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f0054df-6fb0-4197-a6fa-b5e5f909ee14/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 14:26:37,984 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f0054df-6fb0-4197-a6fa-b5e5f909ee14/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-13 14:26:38,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:26:38,279 INFO L255 TraceCheckSpWp]: Trace formula consists of 26 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-13 14:26:38,293 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 14:26:38,336 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 [2024-11-13 14:26:38,362 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:26:38,363 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 14:26:38,364 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-13 14:26:38,364 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [241403117] [2024-11-13 14:26:38,364 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [241403117] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 14:26:38,365 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 14:26:38,366 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-13 14:26:38,368 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [558098875] [2024-11-13 14:26:38,369 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 14:26:38,373 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-13 14:26:38,373 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-13 14:26:38,403 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-13 14:26:38,404 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 14:26:38,411 INFO L87 Difference]: Start difference. First operand has 2456 states, 1255 states have (on average 2.201593625498008) internal successors, (2763), 2442 states have internal predecessors, (2763), 14 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (14), 11 states have call predecessors, (14), 14 states have call successors, (14) Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:26:44,202 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:26:44,203 INFO L93 Difference]: Finished difference Result 3291 states and 3491 transitions. [2024-11-13 14:26:44,205 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-13 14:26:44,207 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3 [2024-11-13 14:26:44,207 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:26:44,244 INFO L225 Difference]: With dead ends: 3291 [2024-11-13 14:26:44,244 INFO L226 Difference]: Without dead ends: 3289 [2024-11-13 14:26:44,246 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 14:26:44,251 INFO L432 NwaCegarLoop]: 1675 mSDtfsCounter, 2320 mSDsluCounter, 570 mSDsCounter, 0 mSdLazyCounter, 1665 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2330 SdHoareTripleChecker+Valid, 2245 SdHoareTripleChecker+Invalid, 1690 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 1665 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.6s IncrementalHoareTripleChecker+Time [2024-11-13 14:26:44,252 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2330 Valid, 2245 Invalid, 1690 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [25 Valid, 1665 Invalid, 0 Unknown, 0 Unchecked, 5.6s Time] [2024-11-13 14:26:44,294 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3289 states. [2024-11-13 14:26:44,435 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3289 to 2600. [2024-11-13 14:26:44,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2600 states, 1427 states have (on average 2.0385423966363) internal successors, (2909), 2584 states have internal predecessors, (2909), 16 states have call successors, (16), 3 states have call predecessors, (16), 3 states have return successors, (16), 13 states have call predecessors, (16), 16 states have call successors, (16) [2024-11-13 14:26:44,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2600 states to 2600 states and 2941 transitions. [2024-11-13 14:26:44,460 INFO L78 Accepts]: Start accepts. Automaton has 2600 states and 2941 transitions. Word has length 3 [2024-11-13 14:26:44,460 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:26:44,460 INFO L471 AbstractCegarLoop]: Abstraction has 2600 states and 2941 transitions. [2024-11-13 14:26:44,461 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:26:44,461 INFO L276 IsEmpty]: Start isEmpty. Operand 2600 states and 2941 transitions. [2024-11-13 14:26:44,461 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2024-11-13 14:26:44,461 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:26:44,461 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1] [2024-11-13 14:26:44,484 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f0054df-6fb0-4197-a6fa-b5e5f909ee14/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-13 14:26:44,666 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f0054df-6fb0-4197-a6fa-b5e5f909ee14/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:26:44,666 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 1186 more)] === [2024-11-13 14:26:44,666 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:26:44,667 INFO L85 PathProgramCache]: Analyzing trace with hash 84473, now seen corresponding path program 1 times [2024-11-13 14:26:44,667 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-13 14:26:44,667 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1094227163] [2024-11-13 14:26:44,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:26:44,667 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:26:44,667 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f0054df-6fb0-4197-a6fa-b5e5f909ee14/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:26:44,669 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f0054df-6fb0-4197-a6fa-b5e5f909ee14/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 14:26:44,671 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f0054df-6fb0-4197-a6fa-b5e5f909ee14/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-13 14:26:44,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:26:44,904 INFO L255 TraceCheckSpWp]: Trace formula consists of 26 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-13 14:26:44,907 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 14:26:44,923 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 [2024-11-13 14:26:44,945 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:26:44,946 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 14:26:44,946 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-13 14:26:44,946 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1094227163] [2024-11-13 14:26:44,946 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1094227163] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 14:26:44,946 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 14:26:44,946 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-13 14:26:44,947 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [369946753] [2024-11-13 14:26:44,947 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 14:26:44,949 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-13 14:26:44,949 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-13 14:26:44,950 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-13 14:26:44,950 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 14:26:44,950 INFO L87 Difference]: Start difference. First operand 2600 states and 2941 transitions. Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:26:52,129 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:26:52,129 INFO L93 Difference]: Finished difference Result 3401 states and 3822 transitions. [2024-11-13 14:26:52,129 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-13 14:26:52,130 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3 [2024-11-13 14:26:52,130 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:26:52,143 INFO L225 Difference]: With dead ends: 3401 [2024-11-13 14:26:52,143 INFO L226 Difference]: Without dead ends: 3401 [2024-11-13 14:26:52,143 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 14:26:52,144 INFO L432 NwaCegarLoop]: 2226 mSDtfsCounter, 875 mSDsluCounter, 1403 mSDsCounter, 0 mSdLazyCounter, 1519 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 878 SdHoareTripleChecker+Valid, 3629 SdHoareTripleChecker+Invalid, 1530 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 1519 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.0s IncrementalHoareTripleChecker+Time [2024-11-13 14:26:52,145 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [878 Valid, 3629 Invalid, 1530 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [11 Valid, 1519 Invalid, 0 Unknown, 0 Unchecked, 7.0s Time] [2024-11-13 14:26:52,152 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3401 states. [2024-11-13 14:26:52,234 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3401 to 3073. [2024-11-13 14:26:52,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3073 states, 1898 states have (on average 1.993677555321391) internal successors, (3784), 3054 states have internal predecessors, (3784), 19 states have call successors, (19), 3 states have call predecessors, (19), 3 states have return successors, (19), 16 states have call predecessors, (19), 19 states have call successors, (19) [2024-11-13 14:26:52,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3073 states to 3073 states and 3822 transitions. [2024-11-13 14:26:52,255 INFO L78 Accepts]: Start accepts. Automaton has 3073 states and 3822 transitions. Word has length 3 [2024-11-13 14:26:52,255 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:26:52,255 INFO L471 AbstractCegarLoop]: Abstraction has 3073 states and 3822 transitions. [2024-11-13 14:26:52,255 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:26:52,256 INFO L276 IsEmpty]: Start isEmpty. Operand 3073 states and 3822 transitions. [2024-11-13 14:26:52,256 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2024-11-13 14:26:52,257 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:26:52,257 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:26:52,278 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f0054df-6fb0-4197-a6fa-b5e5f909ee14/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-13 14:26:52,457 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f0054df-6fb0-4197-a6fa-b5e5f909ee14/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:26:52,457 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 1186 more)] === [2024-11-13 14:26:52,458 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:26:52,458 INFO L85 PathProgramCache]: Analyzing trace with hash 703308354, now seen corresponding path program 1 times [2024-11-13 14:26:52,459 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-13 14:26:52,459 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [627000508] [2024-11-13 14:26:52,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:26:52,459 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:26:52,459 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f0054df-6fb0-4197-a6fa-b5e5f909ee14/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:26:52,461 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f0054df-6fb0-4197-a6fa-b5e5f909ee14/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 14:26:52,464 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f0054df-6fb0-4197-a6fa-b5e5f909ee14/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-13 14:26:52,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:26:52,691 INFO L255 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-13 14:26:52,694 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 14:26:52,703 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 [2024-11-13 14:26:52,787 INFO L349 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2024-11-13 14:26:52,787 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 [2024-11-13 14:26:52,865 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:26:52,865 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 14:26:52,865 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-13 14:26:52,865 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [627000508] [2024-11-13 14:26:52,865 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [627000508] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 14:26:52,865 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 14:26:52,865 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-13 14:26:52,865 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [997578512] [2024-11-13 14:26:52,865 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 14:26:52,866 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-13 14:26:52,866 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-13 14:26:52,866 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-13 14:26:52,866 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-13 14:26:52,866 INFO L87 Difference]: Start difference. First operand 3073 states and 3822 transitions. Second operand has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:27:05,245 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:27:05,246 INFO L93 Difference]: Finished difference Result 4759 states and 5293 transitions. [2024-11-13 14:27:05,247 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-13 14:27:05,247 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2024-11-13 14:27:05,247 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:27:05,263 INFO L225 Difference]: With dead ends: 4759 [2024-11-13 14:27:05,264 INFO L226 Difference]: Without dead ends: 4759 [2024-11-13 14:27:05,264 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-13 14:27:05,265 INFO L432 NwaCegarLoop]: 2494 mSDtfsCounter, 2331 mSDsluCounter, 2800 mSDsCounter, 0 mSdLazyCounter, 3320 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2337 SdHoareTripleChecker+Valid, 5294 SdHoareTripleChecker+Invalid, 3337 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 3320 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.2s IncrementalHoareTripleChecker+Time [2024-11-13 14:27:05,265 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2337 Valid, 5294 Invalid, 3337 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [17 Valid, 3320 Invalid, 0 Unknown, 0 Unchecked, 12.2s Time] [2024-11-13 14:27:05,273 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4759 states. [2024-11-13 14:27:05,334 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4759 to 3359. [2024-11-13 14:27:05,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3359 states, 2184 states have (on average 1.9885531135531136) internal successors, (4343), 3340 states have internal predecessors, (4343), 19 states have call successors, (19), 3 states have call predecessors, (19), 3 states have return successors, (19), 16 states have call predecessors, (19), 19 states have call successors, (19) [2024-11-13 14:27:05,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3359 states to 3359 states and 4381 transitions. [2024-11-13 14:27:05,349 INFO L78 Accepts]: Start accepts. Automaton has 3359 states and 4381 transitions. Word has length 7 [2024-11-13 14:27:05,352 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:27:05,352 INFO L471 AbstractCegarLoop]: Abstraction has 3359 states and 4381 transitions. [2024-11-13 14:27:05,352 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:27:05,352 INFO L276 IsEmpty]: Start isEmpty. Operand 3359 states and 4381 transitions. [2024-11-13 14:27:05,352 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2024-11-13 14:27:05,352 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:27:05,353 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:27:05,377 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f0054df-6fb0-4197-a6fa-b5e5f909ee14/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-11-13 14:27:05,553 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f0054df-6fb0-4197-a6fa-b5e5f909ee14/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:27:05,553 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 1186 more)] === [2024-11-13 14:27:05,554 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:27:05,554 INFO L85 PathProgramCache]: Analyzing trace with hash 327722514, now seen corresponding path program 1 times [2024-11-13 14:27:05,554 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-13 14:27:05,554 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [303934451] [2024-11-13 14:27:05,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:27:05,555 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:27:05,555 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f0054df-6fb0-4197-a6fa-b5e5f909ee14/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:27:05,557 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f0054df-6fb0-4197-a6fa-b5e5f909ee14/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 14:27:05,558 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f0054df-6fb0-4197-a6fa-b5e5f909ee14/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-13 14:27:05,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:27:05,841 INFO L255 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-13 14:27:05,844 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 14:27:05,857 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 [2024-11-13 14:27:05,874 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:27:05,874 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 14:27:05,874 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-13 14:27:05,874 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [303934451] [2024-11-13 14:27:05,874 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [303934451] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 14:27:05,874 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 14:27:05,874 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-13 14:27:05,874 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1399451129] [2024-11-13 14:27:05,874 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 14:27:05,875 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-13 14:27:05,875 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-13 14:27:05,875 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-13 14:27:05,875 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 14:27:05,875 INFO L87 Difference]: Start difference. First operand 3359 states and 4381 transitions. Second operand has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 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) [2024-11-13 14:27:11,020 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:27:11,020 INFO L93 Difference]: Finished difference Result 4071 states and 5132 transitions. [2024-11-13 14:27:11,020 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-13 14:27:11,020 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 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 [2024-11-13 14:27:11,021 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:27:11,033 INFO L225 Difference]: With dead ends: 4071 [2024-11-13 14:27:11,033 INFO L226 Difference]: Without dead ends: 4071 [2024-11-13 14:27:11,034 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 14:27:11,037 INFO L432 NwaCegarLoop]: 2412 mSDtfsCounter, 1920 mSDsluCounter, 768 mSDsCounter, 0 mSdLazyCounter, 1614 mSolverCounterSat, 99 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1930 SdHoareTripleChecker+Valid, 3180 SdHoareTripleChecker+Invalid, 1713 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 99 IncrementalHoareTripleChecker+Valid, 1614 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.0s IncrementalHoareTripleChecker+Time [2024-11-13 14:27:11,038 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1930 Valid, 3180 Invalid, 1713 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [99 Valid, 1614 Invalid, 0 Unknown, 0 Unchecked, 5.0s Time] [2024-11-13 14:27:11,051 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4071 states. [2024-11-13 14:27:11,112 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4071 to 3267. [2024-11-13 14:27:11,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3267 states, 2184 states have (on average 1.9271978021978022) internal successors, (4209), 3248 states have internal predecessors, (4209), 19 states have call successors, (19), 3 states have call predecessors, (19), 3 states have return successors, (19), 16 states have call predecessors, (19), 19 states have call successors, (19) [2024-11-13 14:27:11,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3267 states to 3267 states and 4247 transitions. [2024-11-13 14:27:11,127 INFO L78 Accepts]: Start accepts. Automaton has 3267 states and 4247 transitions. Word has length 8 [2024-11-13 14:27:11,127 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:27:11,127 INFO L471 AbstractCegarLoop]: Abstraction has 3267 states and 4247 transitions. [2024-11-13 14:27:11,128 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 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) [2024-11-13 14:27:11,128 INFO L276 IsEmpty]: Start isEmpty. Operand 3267 states and 4247 transitions. [2024-11-13 14:27:11,128 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2024-11-13 14:27:11,128 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:27:11,128 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:27:11,151 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f0054df-6fb0-4197-a6fa-b5e5f909ee14/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-13 14:27:11,329 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f0054df-6fb0-4197-a6fa-b5e5f909ee14/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:27:11,329 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 1186 more)] === [2024-11-13 14:27:11,330 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:27:11,330 INFO L85 PathProgramCache]: Analyzing trace with hash 327722515, now seen corresponding path program 1 times [2024-11-13 14:27:11,331 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-13 14:27:11,331 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [761792222] [2024-11-13 14:27:11,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:27:11,331 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:27:11,332 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f0054df-6fb0-4197-a6fa-b5e5f909ee14/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:27:11,334 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f0054df-6fb0-4197-a6fa-b5e5f909ee14/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 14:27:11,336 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f0054df-6fb0-4197-a6fa-b5e5f909ee14/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-13 14:27:11,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:27:11,583 INFO L255 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-13 14:27:11,586 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 14:27:11,605 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 [2024-11-13 14:27:11,649 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:27:11,649 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 14:27:11,649 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-13 14:27:11,649 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [761792222] [2024-11-13 14:27:11,649 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [761792222] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 14:27:11,649 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 14:27:11,649 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-13 14:27:11,649 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1127321050] [2024-11-13 14:27:11,650 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 14:27:11,650 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-13 14:27:11,650 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-13 14:27:11,650 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-13 14:27:11,650 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 14:27:11,651 INFO L87 Difference]: Start difference. First operand 3267 states and 4247 transitions. Second operand has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 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) [2024-11-13 14:27:18,987 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:27:18,988 INFO L93 Difference]: Finished difference Result 4879 states and 6347 transitions. [2024-11-13 14:27:18,989 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-13 14:27:18,989 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 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 [2024-11-13 14:27:18,989 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:27:19,000 INFO L225 Difference]: With dead ends: 4879 [2024-11-13 14:27:19,000 INFO L226 Difference]: Without dead ends: 4879 [2024-11-13 14:27:19,000 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 14:27:19,001 INFO L432 NwaCegarLoop]: 2764 mSDtfsCounter, 1423 mSDsluCounter, 1203 mSDsCounter, 0 mSdLazyCounter, 1684 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1427 SdHoareTripleChecker+Valid, 3967 SdHoareTripleChecker+Invalid, 1709 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 1684 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.2s IncrementalHoareTripleChecker+Time [2024-11-13 14:27:19,001 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1427 Valid, 3967 Invalid, 1709 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 1684 Invalid, 0 Unknown, 0 Unchecked, 7.2s Time] [2024-11-13 14:27:19,005 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4879 states. [2024-11-13 14:27:19,061 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4879 to 3434. [2024-11-13 14:27:19,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3434 states, 2361 states have (on average 1.9097839898348157) internal successors, (4509), 3415 states have internal predecessors, (4509), 19 states have call successors, (19), 3 states have call predecessors, (19), 3 states have return successors, (19), 16 states have call predecessors, (19), 19 states have call successors, (19) [2024-11-13 14:27:19,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3434 states to 3434 states and 4547 transitions. [2024-11-13 14:27:19,073 INFO L78 Accepts]: Start accepts. Automaton has 3434 states and 4547 transitions. Word has length 8 [2024-11-13 14:27:19,073 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:27:19,073 INFO L471 AbstractCegarLoop]: Abstraction has 3434 states and 4547 transitions. [2024-11-13 14:27:19,073 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 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) [2024-11-13 14:27:19,073 INFO L276 IsEmpty]: Start isEmpty. Operand 3434 states and 4547 transitions. [2024-11-13 14:27:19,074 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2024-11-13 14:27:19,074 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:27:19,074 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:27:19,096 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f0054df-6fb0-4197-a6fa-b5e5f909ee14/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-13 14:27:19,274 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f0054df-6fb0-4197-a6fa-b5e5f909ee14/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:27:19,275 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr638REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 1186 more)] === [2024-11-13 14:27:19,275 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:27:19,275 INFO L85 PathProgramCache]: Analyzing trace with hash -1292249561, now seen corresponding path program 1 times [2024-11-13 14:27:19,275 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-13 14:27:19,275 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1193837005] [2024-11-13 14:27:19,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:27:19,275 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:27:19,276 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f0054df-6fb0-4197-a6fa-b5e5f909ee14/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:27:19,278 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f0054df-6fb0-4197-a6fa-b5e5f909ee14/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 14:27:19,279 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f0054df-6fb0-4197-a6fa-b5e5f909ee14/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-13 14:27:19,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:27:19,517 INFO L255 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-13 14:27:19,520 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 14:27:19,535 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 [2024-11-13 14:27:19,584 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:27:19,584 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 14:27:19,584 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-13 14:27:19,585 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1193837005] [2024-11-13 14:27:19,585 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1193837005] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 14:27:19,585 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 14:27:19,585 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-13 14:27:19,585 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1496786213] [2024-11-13 14:27:19,585 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 14:27:19,586 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-13 14:27:19,586 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-13 14:27:19,586 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-13 14:27:19,586 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-13 14:27:19,586 INFO L87 Difference]: Start difference. First operand 3434 states and 4547 transitions. Second operand has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 4 states have internal predecessors, (11), 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) [2024-11-13 14:27:26,632 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:27:26,633 INFO L93 Difference]: Finished difference Result 4071 states and 5042 transitions. [2024-11-13 14:27:26,633 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-13 14:27:26,633 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 4 states have internal predecessors, (11), 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 11 [2024-11-13 14:27:26,633 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:27:26,643 INFO L225 Difference]: With dead ends: 4071 [2024-11-13 14:27:26,643 INFO L226 Difference]: Without dead ends: 4071 [2024-11-13 14:27:26,644 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-13 14:27:26,644 INFO L432 NwaCegarLoop]: 1623 mSDtfsCounter, 2283 mSDsluCounter, 1948 mSDsCounter, 0 mSdLazyCounter, 2718 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2293 SdHoareTripleChecker+Valid, 3571 SdHoareTripleChecker+Invalid, 2749 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 2718 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.9s IncrementalHoareTripleChecker+Time [2024-11-13 14:27:26,644 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2293 Valid, 3571 Invalid, 2749 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 2718 Invalid, 0 Unknown, 0 Unchecked, 6.9s Time] [2024-11-13 14:27:26,649 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4071 states. [2024-11-13 14:27:26,690 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4071 to 3411. [2024-11-13 14:27:26,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3411 states, 2361 states have (on average 1.890300720033884) internal successors, (4463), 3392 states have internal predecessors, (4463), 19 states have call successors, (19), 3 states have call predecessors, (19), 3 states have return successors, (19), 16 states have call predecessors, (19), 19 states have call successors, (19) [2024-11-13 14:27:26,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3411 states to 3411 states and 4501 transitions. [2024-11-13 14:27:26,701 INFO L78 Accepts]: Start accepts. Automaton has 3411 states and 4501 transitions. Word has length 11 [2024-11-13 14:27:26,702 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:27:26,702 INFO L471 AbstractCegarLoop]: Abstraction has 3411 states and 4501 transitions. [2024-11-13 14:27:26,702 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 4 states have internal predecessors, (11), 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) [2024-11-13 14:27:26,702 INFO L276 IsEmpty]: Start isEmpty. Operand 3411 states and 4501 transitions. [2024-11-13 14:27:26,702 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2024-11-13 14:27:26,702 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:27:26,703 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:27:26,724 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f0054df-6fb0-4197-a6fa-b5e5f909ee14/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-13 14:27:26,906 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f0054df-6fb0-4197-a6fa-b5e5f909ee14/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:27:26,907 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr639REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 1186 more)] === [2024-11-13 14:27:26,907 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:27:26,907 INFO L85 PathProgramCache]: Analyzing trace with hash -1292249560, now seen corresponding path program 1 times [2024-11-13 14:27:26,907 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-13 14:27:26,907 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1316936507] [2024-11-13 14:27:26,907 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:27:26,907 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:27:26,908 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f0054df-6fb0-4197-a6fa-b5e5f909ee14/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:27:26,910 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f0054df-6fb0-4197-a6fa-b5e5f909ee14/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 14:27:26,912 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f0054df-6fb0-4197-a6fa-b5e5f909ee14/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-13 14:27:27,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:27:27,151 INFO L255 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-13 14:27:27,153 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 14:27:27,171 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:27:27,171 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 14:27:27,172 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-13 14:27:27,172 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1316936507] [2024-11-13 14:27:27,172 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1316936507] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 14:27:27,172 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 14:27:27,172 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-13 14:27:27,172 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [709709044] [2024-11-13 14:27:27,172 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 14:27:27,173 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-13 14:27:27,173 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-13 14:27:27,173 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-13 14:27:27,174 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 14:27:27,174 INFO L87 Difference]: Start difference. First operand 3411 states and 4501 transitions. Second operand has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 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) [2024-11-13 14:27:27,238 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:27:27,238 INFO L93 Difference]: Finished difference Result 3363 states and 4439 transitions. [2024-11-13 14:27:27,239 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-13 14:27:27,239 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 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 11 [2024-11-13 14:27:27,239 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:27:27,263 INFO L225 Difference]: With dead ends: 3363 [2024-11-13 14:27:27,263 INFO L226 Difference]: Without dead ends: 3363 [2024-11-13 14:27:27,263 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 14:27:27,263 INFO L432 NwaCegarLoop]: 2407 mSDtfsCounter, 61 mSDsluCounter, 2354 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 61 SdHoareTripleChecker+Valid, 4761 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 [2024-11-13 14:27:27,264 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [61 Valid, 4761 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-13 14:27:27,269 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3363 states. [2024-11-13 14:27:27,308 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3363 to 3363. [2024-11-13 14:27:27,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3363 states, 2325 states have (on average 1.8929032258064515) internal successors, (4401), 3344 states have internal predecessors, (4401), 19 states have call successors, (19), 3 states have call predecessors, (19), 3 states have return successors, (19), 16 states have call predecessors, (19), 19 states have call successors, (19) [2024-11-13 14:27:27,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3363 states to 3363 states and 4439 transitions. [2024-11-13 14:27:27,320 INFO L78 Accepts]: Start accepts. Automaton has 3363 states and 4439 transitions. Word has length 11 [2024-11-13 14:27:27,320 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:27:27,320 INFO L471 AbstractCegarLoop]: Abstraction has 3363 states and 4439 transitions. [2024-11-13 14:27:27,320 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 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) [2024-11-13 14:27:27,320 INFO L276 IsEmpty]: Start isEmpty. Operand 3363 states and 4439 transitions. [2024-11-13 14:27:27,321 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2024-11-13 14:27:27,321 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:27:27,321 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:27:27,343 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f0054df-6fb0-4197-a6fa-b5e5f909ee14/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-13 14:27:27,521 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f0054df-6fb0-4197-a6fa-b5e5f909ee14/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:27:27,522 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr663REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 1186 more)] === [2024-11-13 14:27:27,522 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:27:27,523 INFO L85 PathProgramCache]: Analyzing trace with hash -606227775, now seen corresponding path program 1 times [2024-11-13 14:27:27,523 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-13 14:27:27,523 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1545934999] [2024-11-13 14:27:27,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:27:27,523 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:27:27,523 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f0054df-6fb0-4197-a6fa-b5e5f909ee14/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:27:27,525 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f0054df-6fb0-4197-a6fa-b5e5f909ee14/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 14:27:27,527 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f0054df-6fb0-4197-a6fa-b5e5f909ee14/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-13 14:27:27,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:27:27,771 INFO L255 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-13 14:27:27,773 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 14:27:27,801 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:27:27,801 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 14:27:27,801 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-13 14:27:27,801 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1545934999] [2024-11-13 14:27:27,801 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1545934999] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 14:27:27,802 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 14:27:27,802 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-13 14:27:27,802 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1851365991] [2024-11-13 14:27:27,802 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 14:27:27,802 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-13 14:27:27,802 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-13 14:27:27,803 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-13 14:27:27,803 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-13 14:27:27,803 INFO L87 Difference]: Start difference. First operand 3363 states and 4439 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) [2024-11-13 14:27:27,912 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:27:27,912 INFO L93 Difference]: Finished difference Result 3340 states and 4395 transitions. [2024-11-13 14:27:27,912 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-13 14:27:27,912 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 [2024-11-13 14:27:27,913 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:27:27,921 INFO L225 Difference]: With dead ends: 3340 [2024-11-13 14:27:27,921 INFO L226 Difference]: Without dead ends: 3340 [2024-11-13 14:27:27,921 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 [2024-11-13 14:27:27,922 INFO L432 NwaCegarLoop]: 2369 mSDtfsCounter, 45 mSDsluCounter, 4715 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 7084 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 [2024-11-13 14:27:27,922 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [45 Valid, 7084 Invalid, 59 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-13 14:27:27,926 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3340 states. [2024-11-13 14:27:27,958 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3340 to 3340. [2024-11-13 14:27:27,963 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3340 states, 2309 states have (on average 1.8869640537029018) internal successors, (4357), 3321 states have internal predecessors, (4357), 19 states have call successors, (19), 3 states have call predecessors, (19), 3 states have return successors, (19), 16 states have call predecessors, (19), 19 states have call successors, (19) [2024-11-13 14:27:27,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3340 states to 3340 states and 4395 transitions. [2024-11-13 14:27:27,969 INFO L78 Accepts]: Start accepts. Automaton has 3340 states and 4395 transitions. Word has length 13 [2024-11-13 14:27:27,969 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:27:27,969 INFO L471 AbstractCegarLoop]: Abstraction has 3340 states and 4395 transitions. [2024-11-13 14:27:27,969 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) [2024-11-13 14:27:27,970 INFO L276 IsEmpty]: Start isEmpty. Operand 3340 states and 4395 transitions. [2024-11-13 14:27:27,970 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2024-11-13 14:27:27,970 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:27:27,970 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] [2024-11-13 14:27:27,992 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f0054df-6fb0-4197-a6fa-b5e5f909ee14/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-11-13 14:27:28,174 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f0054df-6fb0-4197-a6fa-b5e5f909ee14/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:27:28,175 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr16REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 1186 more)] === [2024-11-13 14:27:28,175 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:27:28,175 INFO L85 PathProgramCache]: Analyzing trace with hash -286362881, now seen corresponding path program 1 times [2024-11-13 14:27:28,175 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-13 14:27:28,175 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2046967229] [2024-11-13 14:27:28,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:27:28,176 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:27:28,176 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f0054df-6fb0-4197-a6fa-b5e5f909ee14/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:27:28,177 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f0054df-6fb0-4197-a6fa-b5e5f909ee14/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 14:27:28,179 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f0054df-6fb0-4197-a6fa-b5e5f909ee14/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-13 14:27:28,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:27:28,434 INFO L255 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-13 14:27:28,436 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 14:27:28,490 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:27:28,490 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 14:27:28,490 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-13 14:27:28,491 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2046967229] [2024-11-13 14:27:28,491 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2046967229] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 14:27:28,491 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 14:27:28,491 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-13 14:27:28,491 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [247111697] [2024-11-13 14:27:28,491 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 14:27:28,491 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-13 14:27:28,491 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-13 14:27:28,491 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-13 14:27:28,492 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-13 14:27:28,492 INFO L87 Difference]: Start difference. First operand 3340 states and 4395 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) [2024-11-13 14:27:35,304 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:27:35,304 INFO L93 Difference]: Finished difference Result 4061 states and 5166 transitions. [2024-11-13 14:27:35,305 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-13 14:27:35,305 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 [2024-11-13 14:27:35,305 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:27:35,316 INFO L225 Difference]: With dead ends: 4061 [2024-11-13 14:27:35,316 INFO L226 Difference]: Without dead ends: 4061 [2024-11-13 14:27:35,316 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 [2024-11-13 14:27:35,317 INFO L432 NwaCegarLoop]: 2266 mSDtfsCounter, 1885 mSDsluCounter, 2417 mSDsCounter, 0 mSdLazyCounter, 2919 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1895 SdHoareTripleChecker+Valid, 4683 SdHoareTripleChecker+Invalid, 2951 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 2919 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.7s IncrementalHoareTripleChecker+Time [2024-11-13 14:27:35,317 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1895 Valid, 4683 Invalid, 2951 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 2919 Invalid, 0 Unknown, 0 Unchecked, 6.7s Time] [2024-11-13 14:27:35,323 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4061 states. [2024-11-13 14:27:35,385 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4061 to 3317. [2024-11-13 14:27:35,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3317 states, 2309 states have (on average 1.867042009527934) internal successors, (4311), 3298 states have internal predecessors, (4311), 19 states have call successors, (19), 3 states have call predecessors, (19), 3 states have return successors, (19), 16 states have call predecessors, (19), 19 states have call successors, (19) [2024-11-13 14:27:35,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3317 states to 3317 states and 4349 transitions. [2024-11-13 14:27:35,404 INFO L78 Accepts]: Start accepts. Automaton has 3317 states and 4349 transitions. Word has length 20 [2024-11-13 14:27:35,404 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:27:35,404 INFO L471 AbstractCegarLoop]: Abstraction has 3317 states and 4349 transitions. [2024-11-13 14:27:35,405 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) [2024-11-13 14:27:35,405 INFO L276 IsEmpty]: Start isEmpty. Operand 3317 states and 4349 transitions. [2024-11-13 14:27:35,406 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2024-11-13 14:27:35,406 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:27:35,406 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] [2024-11-13 14:27:35,428 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f0054df-6fb0-4197-a6fa-b5e5f909ee14/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-11-13 14:27:35,606 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f0054df-6fb0-4197-a6fa-b5e5f909ee14/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:27:35,607 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr17REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 1186 more)] === [2024-11-13 14:27:35,607 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:27:35,607 INFO L85 PathProgramCache]: Analyzing trace with hash -286362880, now seen corresponding path program 1 times [2024-11-13 14:27:35,608 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-13 14:27:35,608 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [592736942] [2024-11-13 14:27:35,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:27:35,608 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:27:35,608 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f0054df-6fb0-4197-a6fa-b5e5f909ee14/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:27:35,611 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f0054df-6fb0-4197-a6fa-b5e5f909ee14/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 14:27:35,612 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f0054df-6fb0-4197-a6fa-b5e5f909ee14/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-13 14:27:35,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:27:35,877 INFO L255 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-13 14:27:35,879 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 14:27:35,894 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:27:35,894 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 14:27:35,894 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-13 14:27:35,894 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [592736942] [2024-11-13 14:27:35,894 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [592736942] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 14:27:35,894 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 14:27:35,894 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-13 14:27:35,894 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [728182985] [2024-11-13 14:27:35,894 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 14:27:35,894 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-13 14:27:35,894 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-13 14:27:35,895 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-13 14:27:35,895 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 14:27:35,895 INFO L87 Difference]: Start difference. First operand 3317 states and 4349 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) [2024-11-13 14:27:35,951 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:27:35,951 INFO L93 Difference]: Finished difference Result 3269 states and 4287 transitions. [2024-11-13 14:27:35,952 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-13 14:27:35,952 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 [2024-11-13 14:27:35,952 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:27:35,963 INFO L225 Difference]: With dead ends: 3269 [2024-11-13 14:27:35,963 INFO L226 Difference]: Without dead ends: 3269 [2024-11-13 14:27:35,964 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 [2024-11-13 14:27:35,964 INFO L432 NwaCegarLoop]: 2325 mSDtfsCounter, 61 mSDsluCounter, 2272 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 61 SdHoareTripleChecker+Valid, 4597 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 [2024-11-13 14:27:35,965 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [61 Valid, 4597 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-13 14:27:35,972 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3269 states. [2024-11-13 14:27:36,011 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3269 to 3269. [2024-11-13 14:27:36,015 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3269 states, 2273 states have (on average 1.8693356797184337) internal successors, (4249), 3250 states have internal predecessors, (4249), 19 states have call successors, (19), 3 states have call predecessors, (19), 3 states have return successors, (19), 16 states have call predecessors, (19), 19 states have call successors, (19) [2024-11-13 14:27:36,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3269 states to 3269 states and 4287 transitions. [2024-11-13 14:27:36,020 INFO L78 Accepts]: Start accepts. Automaton has 3269 states and 4287 transitions. Word has length 20 [2024-11-13 14:27:36,021 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:27:36,021 INFO L471 AbstractCegarLoop]: Abstraction has 3269 states and 4287 transitions. [2024-11-13 14:27:36,021 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) [2024-11-13 14:27:36,021 INFO L276 IsEmpty]: Start isEmpty. Operand 3269 states and 4287 transitions. [2024-11-13 14:27:36,022 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2024-11-13 14:27:36,022 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:27:36,022 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] [2024-11-13 14:27:36,044 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f0054df-6fb0-4197-a6fa-b5e5f909ee14/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-11-13 14:27:36,225 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f0054df-6fb0-4197-a6fa-b5e5f909ee14/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:27:36,226 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr324REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 1186 more)] === [2024-11-13 14:27:36,226 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:27:36,226 INFO L85 PathProgramCache]: Analyzing trace with hash -910229057, now seen corresponding path program 1 times [2024-11-13 14:27:36,226 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-13 14:27:36,227 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2116785004] [2024-11-13 14:27:36,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:27:36,227 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:27:36,227 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f0054df-6fb0-4197-a6fa-b5e5f909ee14/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:27:36,229 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f0054df-6fb0-4197-a6fa-b5e5f909ee14/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 14:27:36,231 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f0054df-6fb0-4197-a6fa-b5e5f909ee14/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-13 14:27:36,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:27:36,492 INFO L255 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-13 14:27:36,494 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 14:27:36,549 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:27:36,550 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 14:27:36,550 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-13 14:27:36,550 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2116785004] [2024-11-13 14:27:36,550 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2116785004] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 14:27:36,550 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 14:27:36,550 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-13 14:27:36,550 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1100816555] [2024-11-13 14:27:36,550 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 14:27:36,551 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-13 14:27:36,551 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-13 14:27:36,551 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-13 14:27:36,551 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-13 14:27:36,551 INFO L87 Difference]: Start difference. First operand 3269 states and 4287 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) [2024-11-13 14:27:43,007 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:27:43,007 INFO L93 Difference]: Finished difference Result 3998 states and 5020 transitions. [2024-11-13 14:27:43,008 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-13 14:27:43,008 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 [2024-11-13 14:27:43,008 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:27:43,016 INFO L225 Difference]: With dead ends: 3998 [2024-11-13 14:27:43,017 INFO L226 Difference]: Without dead ends: 3998 [2024-11-13 14:27:43,017 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 [2024-11-13 14:27:43,018 INFO L432 NwaCegarLoop]: 2247 mSDtfsCounter, 1831 mSDsluCounter, 2398 mSDsCounter, 0 mSdLazyCounter, 2849 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1841 SdHoareTripleChecker+Valid, 4645 SdHoareTripleChecker+Invalid, 2881 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 2849 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.3s IncrementalHoareTripleChecker+Time [2024-11-13 14:27:43,018 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1841 Valid, 4645 Invalid, 2881 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 2849 Invalid, 0 Unknown, 0 Unchecked, 6.3s Time] [2024-11-13 14:27:43,022 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3998 states. [2024-11-13 14:27:43,056 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3998 to 3246. [2024-11-13 14:27:43,059 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3246 states, 2273 states have (on average 1.8288605367355917) internal successors, (4157), 3227 states have internal predecessors, (4157), 19 states have call successors, (19), 3 states have call predecessors, (19), 3 states have return successors, (19), 16 states have call predecessors, (19), 19 states have call successors, (19) [2024-11-13 14:27:43,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3246 states to 3246 states and 4195 transitions. [2024-11-13 14:27:43,065 INFO L78 Accepts]: Start accepts. Automaton has 3246 states and 4195 transitions. Word has length 20 [2024-11-13 14:27:43,065 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:27:43,065 INFO L471 AbstractCegarLoop]: Abstraction has 3246 states and 4195 transitions. [2024-11-13 14:27:43,065 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) [2024-11-13 14:27:43,065 INFO L276 IsEmpty]: Start isEmpty. Operand 3246 states and 4195 transitions. [2024-11-13 14:27:43,069 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2024-11-13 14:27:43,069 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:27:43,069 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] [2024-11-13 14:27:43,091 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f0054df-6fb0-4197-a6fa-b5e5f909ee14/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-11-13 14:27:43,270 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f0054df-6fb0-4197-a6fa-b5e5f909ee14/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:27:43,270 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr325REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 1186 more)] === [2024-11-13 14:27:43,272 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:27:43,272 INFO L85 PathProgramCache]: Analyzing trace with hash -910229056, now seen corresponding path program 1 times [2024-11-13 14:27:43,272 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-13 14:27:43,272 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [80918239] [2024-11-13 14:27:43,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:27:43,273 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:27:43,273 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f0054df-6fb0-4197-a6fa-b5e5f909ee14/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:27:43,275 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f0054df-6fb0-4197-a6fa-b5e5f909ee14/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 14:27:43,279 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f0054df-6fb0-4197-a6fa-b5e5f909ee14/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-11-13 14:27:43,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:27:43,557 INFO L255 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-13 14:27:43,560 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 14:27:43,580 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:27:43,581 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 14:27:43,581 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-13 14:27:43,581 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [80918239] [2024-11-13 14:27:43,581 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [80918239] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 14:27:43,581 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 14:27:43,581 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-13 14:27:43,581 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [625350391] [2024-11-13 14:27:43,581 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 14:27:43,582 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-13 14:27:43,582 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-13 14:27:43,582 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-13 14:27:43,582 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 14:27:43,582 INFO L87 Difference]: Start difference. First operand 3246 states and 4195 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) [2024-11-13 14:27:43,635 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:27:43,635 INFO L93 Difference]: Finished difference Result 3162 states and 4071 transitions. [2024-11-13 14:27:43,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-13 14:27:43,636 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 [2024-11-13 14:27:43,636 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:27:43,643 INFO L225 Difference]: With dead ends: 3162 [2024-11-13 14:27:43,643 INFO L226 Difference]: Without dead ends: 3162 [2024-11-13 14:27:43,644 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 [2024-11-13 14:27:43,644 INFO L432 NwaCegarLoop]: 2271 mSDtfsCounter, 61 mSDsluCounter, 2218 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 61 SdHoareTripleChecker+Valid, 4489 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 [2024-11-13 14:27:43,644 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [61 Valid, 4489 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-13 14:27:43,648 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3162 states. [2024-11-13 14:27:43,675 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3162 to 3162. [2024-11-13 14:27:43,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3162 states, 2201 states have (on average 1.8323489323034985) internal successors, (4033), 3143 states have internal predecessors, (4033), 19 states have call successors, (19), 3 states have call predecessors, (19), 3 states have return successors, (19), 16 states have call predecessors, (19), 19 states have call successors, (19) [2024-11-13 14:27:43,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3162 states to 3162 states and 4071 transitions. [2024-11-13 14:27:43,683 INFO L78 Accepts]: Start accepts. Automaton has 3162 states and 4071 transitions. Word has length 20 [2024-11-13 14:27:43,684 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:27:43,684 INFO L471 AbstractCegarLoop]: Abstraction has 3162 states and 4071 transitions. [2024-11-13 14:27:43,684 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) [2024-11-13 14:27:43,684 INFO L276 IsEmpty]: Start isEmpty. Operand 3162 states and 4071 transitions. [2024-11-13 14:27:43,685 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2024-11-13 14:27:43,685 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:27:43,685 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] [2024-11-13 14:27:43,705 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f0054df-6fb0-4197-a6fa-b5e5f909ee14/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2024-11-13 14:27:43,885 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f0054df-6fb0-4197-a6fa-b5e5f909ee14/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:27:43,886 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr41REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 1186 more)] === [2024-11-13 14:27:43,886 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:27:43,886 INFO L85 PathProgramCache]: Analyzing trace with hash -316824679, now seen corresponding path program 1 times [2024-11-13 14:27:43,887 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-13 14:27:43,887 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1148838250] [2024-11-13 14:27:43,887 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:27:43,887 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:27:43,887 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f0054df-6fb0-4197-a6fa-b5e5f909ee14/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:27:43,889 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f0054df-6fb0-4197-a6fa-b5e5f909ee14/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 14:27:43,891 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f0054df-6fb0-4197-a6fa-b5e5f909ee14/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-11-13 14:27:44,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:27:44,200 INFO L255 TraceCheckSpWp]: Trace formula consists of 142 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-13 14:27:44,203 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 14:27:44,229 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:27:44,230 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 14:27:44,230 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-13 14:27:44,230 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1148838250] [2024-11-13 14:27:44,230 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1148838250] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 14:27:44,230 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 14:27:44,230 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-13 14:27:44,230 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [461320254] [2024-11-13 14:27:44,230 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 14:27:44,231 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-13 14:27:44,231 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-13 14:27:44,231 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-13 14:27:44,232 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-13 14:27:44,232 INFO L87 Difference]: Start difference. First operand 3162 states and 4071 transitions. Second operand has 4 states, 4 states have (on average 5.5) internal successors, (22), 4 states have internal predecessors, (22), 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) [2024-11-13 14:27:44,355 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:27:44,355 INFO L93 Difference]: Finished difference Result 3139 states and 4027 transitions. [2024-11-13 14:27:44,355 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-13 14:27:44,356 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.5) internal successors, (22), 4 states have internal predecessors, (22), 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 22 [2024-11-13 14:27:44,356 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:27:44,365 INFO L225 Difference]: With dead ends: 3139 [2024-11-13 14:27:44,365 INFO L226 Difference]: Without dead ends: 3139 [2024-11-13 14:27:44,366 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-13 14:27:44,367 INFO L432 NwaCegarLoop]: 2233 mSDtfsCounter, 45 mSDsluCounter, 4443 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 6676 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 [2024-11-13 14:27:44,368 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [45 Valid, 6676 Invalid, 59 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-13 14:27:44,372 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3139 states. [2024-11-13 14:27:44,406 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3139 to 3139. [2024-11-13 14:27:44,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3139 states, 2185 states have (on average 1.825629290617849) internal successors, (3989), 3120 states have internal predecessors, (3989), 19 states have call successors, (19), 3 states have call predecessors, (19), 3 states have return successors, (19), 16 states have call predecessors, (19), 19 states have call successors, (19) [2024-11-13 14:27:44,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3139 states to 3139 states and 4027 transitions. [2024-11-13 14:27:44,417 INFO L78 Accepts]: Start accepts. Automaton has 3139 states and 4027 transitions. Word has length 22 [2024-11-13 14:27:44,417 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:27:44,417 INFO L471 AbstractCegarLoop]: Abstraction has 3139 states and 4027 transitions. [2024-11-13 14:27:44,418 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.5) internal successors, (22), 4 states have internal predecessors, (22), 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) [2024-11-13 14:27:44,418 INFO L276 IsEmpty]: Start isEmpty. Operand 3139 states and 4027 transitions. [2024-11-13 14:27:44,418 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2024-11-13 14:27:44,418 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:27:44,418 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] [2024-11-13 14:27:44,442 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f0054df-6fb0-4197-a6fa-b5e5f909ee14/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2024-11-13 14:27:44,619 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f0054df-6fb0-4197-a6fa-b5e5f909ee14/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:27:44,619 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr349REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 1186 more)] === [2024-11-13 14:27:44,620 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:27:44,620 INFO L85 PathProgramCache]: Analyzing trace with hash 1443228825, now seen corresponding path program 1 times [2024-11-13 14:27:44,621 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-13 14:27:44,621 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1192937486] [2024-11-13 14:27:44,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:27:44,621 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:27:44,621 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f0054df-6fb0-4197-a6fa-b5e5f909ee14/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:27:44,623 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f0054df-6fb0-4197-a6fa-b5e5f909ee14/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 14:27:44,626 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f0054df-6fb0-4197-a6fa-b5e5f909ee14/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-11-13 14:27:44,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:27:44,907 INFO L255 TraceCheckSpWp]: Trace formula consists of 142 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-13 14:27:44,910 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 14:27:44,933 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:27:44,934 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 14:27:44,934 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-13 14:27:44,934 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1192937486] [2024-11-13 14:27:44,934 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1192937486] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 14:27:44,934 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 14:27:44,934 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-13 14:27:44,934 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1069634274] [2024-11-13 14:27:44,934 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 14:27:44,934 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-13 14:27:44,934 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-13 14:27:44,934 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-13 14:27:44,935 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-13 14:27:44,935 INFO L87 Difference]: Start difference. First operand 3139 states and 4027 transitions. Second operand has 4 states, 4 states have (on average 5.5) internal successors, (22), 4 states have internal predecessors, (22), 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) [2024-11-13 14:27:45,025 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:27:45,025 INFO L93 Difference]: Finished difference Result 3100 states and 3939 transitions. [2024-11-13 14:27:45,025 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-13 14:27:45,025 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.5) internal successors, (22), 4 states have internal predecessors, (22), 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 22 [2024-11-13 14:27:45,025 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:27:45,030 INFO L225 Difference]: With dead ends: 3100 [2024-11-13 14:27:45,030 INFO L226 Difference]: Without dead ends: 3100 [2024-11-13 14:27:45,030 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-13 14:27:45,031 INFO L432 NwaCegarLoop]: 2205 mSDtfsCounter, 45 mSDsluCounter, 4387 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 6592 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 [2024-11-13 14:27:45,031 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [45 Valid, 6592 Invalid, 59 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-13 14:27:45,035 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3100 states. [2024-11-13 14:27:45,062 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3100 to 3100. [2024-11-13 14:27:45,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3100 states, 2153 states have (on average 1.8118903855085926) internal successors, (3901), 3081 states have internal predecessors, (3901), 19 states have call successors, (19), 3 states have call predecessors, (19), 3 states have return successors, (19), 16 states have call predecessors, (19), 19 states have call successors, (19) [2024-11-13 14:27:45,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3100 states to 3100 states and 3939 transitions. [2024-11-13 14:27:45,071 INFO L78 Accepts]: Start accepts. Automaton has 3100 states and 3939 transitions. Word has length 22 [2024-11-13 14:27:45,071 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:27:45,071 INFO L471 AbstractCegarLoop]: Abstraction has 3100 states and 3939 transitions. [2024-11-13 14:27:45,071 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.5) internal successors, (22), 4 states have internal predecessors, (22), 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) [2024-11-13 14:27:45,071 INFO L276 IsEmpty]: Start isEmpty. Operand 3100 states and 3939 transitions. [2024-11-13 14:27:45,072 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2024-11-13 14:27:45,072 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:27:45,072 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] [2024-11-13 14:27:45,098 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f0054df-6fb0-4197-a6fa-b5e5f909ee14/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2024-11-13 14:27:45,273 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f0054df-6fb0-4197-a6fa-b5e5f909ee14/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:27:45,273 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr677REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 1186 more)] === [2024-11-13 14:27:45,274 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:27:45,274 INFO L85 PathProgramCache]: Analyzing trace with hash -1622026001, now seen corresponding path program 1 times [2024-11-13 14:27:45,274 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-13 14:27:45,274 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1225612461] [2024-11-13 14:27:45,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:27:45,274 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:27:45,274 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f0054df-6fb0-4197-a6fa-b5e5f909ee14/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:27:45,277 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f0054df-6fb0-4197-a6fa-b5e5f909ee14/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 14:27:45,279 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f0054df-6fb0-4197-a6fa-b5e5f909ee14/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-11-13 14:27:45,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:27:45,550 INFO L255 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-13 14:27:45,554 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 14:27:45,563 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 [2024-11-13 14:27:45,835 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:27:45,835 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 14:27:45,835 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-13 14:27:45,835 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1225612461] [2024-11-13 14:27:45,835 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1225612461] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 14:27:45,836 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 14:27:45,836 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-13 14:27:45,836 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1957358078] [2024-11-13 14:27:45,836 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 14:27:45,836 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-13 14:27:45,836 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-13 14:27:45,836 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-13 14:27:45,836 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-13 14:27:45,837 INFO L87 Difference]: Start difference. First operand 3100 states and 3939 transitions. Second operand has 4 states, 3 states have (on average 9.0) internal successors, (27), 4 states have internal predecessors, (27), 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) [2024-11-13 14:27:53,580 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:27:53,581 INFO L93 Difference]: Finished difference Result 3834 states and 4745 transitions. [2024-11-13 14:27:53,585 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-13 14:27:53,585 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 9.0) internal successors, (27), 4 states have internal predecessors, (27), 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 27 [2024-11-13 14:27:53,585 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:27:53,591 INFO L225 Difference]: With dead ends: 3834 [2024-11-13 14:27:53,591 INFO L226 Difference]: Without dead ends: 3834 [2024-11-13 14:27:53,593 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-13 14:27:53,594 INFO L432 NwaCegarLoop]: 1920 mSDtfsCounter, 806 mSDsluCounter, 2356 mSDsCounter, 0 mSdLazyCounter, 2403 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 809 SdHoareTripleChecker+Valid, 4276 SdHoareTripleChecker+Invalid, 2406 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 2403 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.6s IncrementalHoareTripleChecker+Time [2024-11-13 14:27:53,594 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [809 Valid, 4276 Invalid, 2406 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 2403 Invalid, 0 Unknown, 0 Unchecked, 7.6s Time] [2024-11-13 14:27:53,599 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3834 states. [2024-11-13 14:27:53,629 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3834 to 3136. [2024-11-13 14:27:53,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3136 states, 2189 states have (on average 1.8008222932846047) internal successors, (3942), 3117 states have internal predecessors, (3942), 19 states have call successors, (19), 3 states have call predecessors, (19), 3 states have return successors, (19), 16 states have call predecessors, (19), 19 states have call successors, (19) [2024-11-13 14:27:53,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3136 states to 3136 states and 3980 transitions. [2024-11-13 14:27:53,637 INFO L78 Accepts]: Start accepts. Automaton has 3136 states and 3980 transitions. Word has length 27 [2024-11-13 14:27:53,637 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:27:53,637 INFO L471 AbstractCegarLoop]: Abstraction has 3136 states and 3980 transitions. [2024-11-13 14:27:53,638 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 9.0) internal successors, (27), 4 states have internal predecessors, (27), 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) [2024-11-13 14:27:53,638 INFO L276 IsEmpty]: Start isEmpty. Operand 3136 states and 3980 transitions. [2024-11-13 14:27:53,638 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2024-11-13 14:27:53,638 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:27:53,639 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] [2024-11-13 14:27:53,661 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f0054df-6fb0-4197-a6fa-b5e5f909ee14/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2024-11-13 14:27:53,839 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f0054df-6fb0-4197-a6fa-b5e5f909ee14/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:27:53,840 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr55REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 1186 more)] === [2024-11-13 14:27:53,840 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:27:53,840 INFO L85 PathProgramCache]: Analyzing trace with hash 1897207239, now seen corresponding path program 1 times [2024-11-13 14:27:53,841 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-13 14:27:53,841 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1379112059] [2024-11-13 14:27:53,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:27:53,842 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:27:53,842 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f0054df-6fb0-4197-a6fa-b5e5f909ee14/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:27:53,844 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f0054df-6fb0-4197-a6fa-b5e5f909ee14/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 14:27:53,847 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f0054df-6fb0-4197-a6fa-b5e5f909ee14/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2024-11-13 14:27:54,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:27:54,179 INFO L255 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-13 14:27:54,183 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 14:27:54,197 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 [2024-11-13 14:27:54,504 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:27:54,504 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 14:27:54,504 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-13 14:27:54,504 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1379112059] [2024-11-13 14:27:54,505 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1379112059] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 14:27:54,505 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 14:27:54,505 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-13 14:27:54,505 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1645246077] [2024-11-13 14:27:54,505 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 14:27:54,505 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-13 14:27:54,506 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-13 14:27:54,506 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-13 14:27:54,507 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-13 14:27:54,507 INFO L87 Difference]: Start difference. First operand 3136 states and 3980 transitions. Second operand has 4 states, 3 states have (on average 12.0) internal successors, (36), 4 states have internal predecessors, (36), 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) [2024-11-13 14:28:03,006 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:28:03,006 INFO L93 Difference]: Finished difference Result 4413 states and 5583 transitions. [2024-11-13 14:28:03,006 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-13 14:28:03,006 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 12.0) internal successors, (36), 4 states have internal predecessors, (36), 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 36 [2024-11-13 14:28:03,006 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:28:03,010 INFO L225 Difference]: With dead ends: 4413 [2024-11-13 14:28:03,011 INFO L226 Difference]: Without dead ends: 4413 [2024-11-13 14:28:03,011 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-13 14:28:03,011 INFO L432 NwaCegarLoop]: 2548 mSDtfsCounter, 1186 mSDsluCounter, 2766 mSDsCounter, 0 mSdLazyCounter, 2835 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1190 SdHoareTripleChecker+Valid, 5314 SdHoareTripleChecker+Invalid, 2838 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 2835 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.4s IncrementalHoareTripleChecker+Time [2024-11-13 14:28:03,011 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1190 Valid, 5314 Invalid, 2838 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 2835 Invalid, 0 Unknown, 0 Unchecked, 8.4s Time] [2024-11-13 14:28:03,015 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4413 states. [2024-11-13 14:28:03,045 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4413 to 3132. [2024-11-13 14:28:03,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3132 states, 2189 states have (on average 1.7971676564641388) internal successors, (3934), 3113 states have internal predecessors, (3934), 19 states have call successors, (19), 3 states have call predecessors, (19), 3 states have return successors, (19), 16 states have call predecessors, (19), 19 states have call successors, (19) [2024-11-13 14:28:03,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3132 states to 3132 states and 3972 transitions. [2024-11-13 14:28:03,079 INFO L78 Accepts]: Start accepts. Automaton has 3132 states and 3972 transitions. Word has length 36 [2024-11-13 14:28:03,079 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:28:03,079 INFO L471 AbstractCegarLoop]: Abstraction has 3132 states and 3972 transitions. [2024-11-13 14:28:03,079 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 12.0) internal successors, (36), 4 states have internal predecessors, (36), 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) [2024-11-13 14:28:03,080 INFO L276 IsEmpty]: Start isEmpty. Operand 3132 states and 3972 transitions. [2024-11-13 14:28:03,082 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2024-11-13 14:28:03,082 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:28:03,083 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] [2024-11-13 14:28:03,105 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f0054df-6fb0-4197-a6fa-b5e5f909ee14/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2024-11-13 14:28:03,286 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f0054df-6fb0-4197-a6fa-b5e5f909ee14/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:28:03,287 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr363REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 1186 more)] === [2024-11-13 14:28:03,288 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:28:03,288 INFO L85 PathProgramCache]: Analyzing trace with hash 1374140039, now seen corresponding path program 1 times [2024-11-13 14:28:03,288 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-13 14:28:03,288 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [509079231] [2024-11-13 14:28:03,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:28:03,289 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:28:03,289 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f0054df-6fb0-4197-a6fa-b5e5f909ee14/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:28:03,292 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f0054df-6fb0-4197-a6fa-b5e5f909ee14/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 14:28:03,294 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f0054df-6fb0-4197-a6fa-b5e5f909ee14/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2024-11-13 14:28:03,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:28:03,600 INFO L255 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-13 14:28:03,603 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 14:28:03,619 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 [2024-11-13 14:28:03,892 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:28:03,892 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 14:28:03,892 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-13 14:28:03,892 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [509079231] [2024-11-13 14:28:03,892 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [509079231] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 14:28:03,892 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 14:28:03,892 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-13 14:28:03,893 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [990990504] [2024-11-13 14:28:03,893 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 14:28:03,893 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-13 14:28:03,893 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-13 14:28:03,893 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-13 14:28:03,894 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-13 14:28:03,894 INFO L87 Difference]: Start difference. First operand 3132 states and 3972 transitions. Second operand has 4 states, 3 states have (on average 12.0) internal successors, (36), 4 states have internal predecessors, (36), 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) [2024-11-13 14:28:12,458 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:28:12,458 INFO L93 Difference]: Finished difference Result 4409 states and 5575 transitions. [2024-11-13 14:28:12,459 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-13 14:28:12,459 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 12.0) internal successors, (36), 4 states have internal predecessors, (36), 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 36 [2024-11-13 14:28:12,459 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:28:12,462 INFO L225 Difference]: With dead ends: 4409 [2024-11-13 14:28:12,462 INFO L226 Difference]: Without dead ends: 4409 [2024-11-13 14:28:12,462 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-13 14:28:12,463 INFO L432 NwaCegarLoop]: 2557 mSDtfsCounter, 1182 mSDsluCounter, 2796 mSDsCounter, 0 mSdLazyCounter, 2840 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1186 SdHoareTripleChecker+Valid, 5353 SdHoareTripleChecker+Invalid, 2843 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 2840 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.4s IncrementalHoareTripleChecker+Time [2024-11-13 14:28:12,463 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1186 Valid, 5353 Invalid, 2843 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 2840 Invalid, 0 Unknown, 0 Unchecked, 8.4s Time] [2024-11-13 14:28:12,467 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4409 states. [2024-11-13 14:28:12,498 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4409 to 3132. [2024-11-13 14:28:12,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3132 states, 2189 states have (on average 1.7935130196436728) internal successors, (3926), 3113 states have internal predecessors, (3926), 19 states have call successors, (19), 3 states have call predecessors, (19), 3 states have return successors, (19), 16 states have call predecessors, (19), 19 states have call successors, (19) [2024-11-13 14:28:12,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3132 states to 3132 states and 3964 transitions. [2024-11-13 14:28:12,506 INFO L78 Accepts]: Start accepts. Automaton has 3132 states and 3964 transitions. Word has length 36 [2024-11-13 14:28:12,507 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:28:12,507 INFO L471 AbstractCegarLoop]: Abstraction has 3132 states and 3964 transitions. [2024-11-13 14:28:12,507 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 12.0) internal successors, (36), 4 states have internal predecessors, (36), 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) [2024-11-13 14:28:12,507 INFO L276 IsEmpty]: Start isEmpty. Operand 3132 states and 3964 transitions. [2024-11-13 14:28:12,508 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2024-11-13 14:28:12,508 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:28:12,508 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] [2024-11-13 14:28:12,530 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f0054df-6fb0-4197-a6fa-b5e5f909ee14/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2024-11-13 14:28:12,711 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f0054df-6fb0-4197-a6fa-b5e5f909ee14/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:28:12,712 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr684REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 1186 more)] === [2024-11-13 14:28:12,712 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:28:12,712 INFO L85 PathProgramCache]: Analyzing trace with hash -1632603066, now seen corresponding path program 1 times [2024-11-13 14:28:12,713 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-13 14:28:12,713 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1907924296] [2024-11-13 14:28:12,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:28:12,713 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:28:12,713 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f0054df-6fb0-4197-a6fa-b5e5f909ee14/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:28:12,715 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f0054df-6fb0-4197-a6fa-b5e5f909ee14/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 14:28:12,717 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f0054df-6fb0-4197-a6fa-b5e5f909ee14/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2024-11-13 14:28:13,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:28:13,010 INFO L255 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-13 14:28:13,013 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 14:28:13,288 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:28:13,288 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 14:28:13,288 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-13 14:28:13,288 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1907924296] [2024-11-13 14:28:13,288 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1907924296] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 14:28:13,289 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 14:28:13,289 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-13 14:28:13,289 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1837798859] [2024-11-13 14:28:13,289 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 14:28:13,289 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-13 14:28:13,289 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-13 14:28:13,290 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-13 14:28:13,290 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 14:28:13,290 INFO L87 Difference]: Start difference. First operand 3132 states and 3964 transitions. Second operand has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 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) [2024-11-13 14:28:13,741 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:28:13,741 INFO L93 Difference]: Finished difference Result 4519 states and 5364 transitions. [2024-11-13 14:28:13,742 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-13 14:28:13,742 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 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 41 [2024-11-13 14:28:13,742 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:28:13,748 INFO L225 Difference]: With dead ends: 4519 [2024-11-13 14:28:13,749 INFO L226 Difference]: Without dead ends: 4519 [2024-11-13 14:28:13,749 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 14:28:13,750 INFO L432 NwaCegarLoop]: 2289 mSDtfsCounter, 1506 mSDsluCounter, 2121 mSDsCounter, 0 mSdLazyCounter, 140 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1513 SdHoareTripleChecker+Valid, 4410 SdHoareTripleChecker+Invalid, 147 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 140 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-13 14:28:13,750 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1513 Valid, 4410 Invalid, 147 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 140 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-13 14:28:13,784 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4519 states. [2024-11-13 14:28:13,820 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4519 to 3685. [2024-11-13 14:28:13,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3685 states, 2738 states have (on average 1.779035792549306) internal successors, (4871), 3659 states have internal predecessors, (4871), 26 states have call successors, (26), 3 states have call predecessors, (26), 3 states have return successors, (26), 23 states have call predecessors, (26), 26 states have call successors, (26) [2024-11-13 14:28:13,835 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3685 states to 3685 states and 4923 transitions. [2024-11-13 14:28:13,835 INFO L78 Accepts]: Start accepts. Automaton has 3685 states and 4923 transitions. Word has length 41 [2024-11-13 14:28:13,835 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:28:13,835 INFO L471 AbstractCegarLoop]: Abstraction has 3685 states and 4923 transitions. [2024-11-13 14:28:13,835 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 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) [2024-11-13 14:28:13,836 INFO L276 IsEmpty]: Start isEmpty. Operand 3685 states and 4923 transitions. [2024-11-13 14:28:13,836 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2024-11-13 14:28:13,837 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:28:13,837 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] [2024-11-13 14:28:13,859 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f0054df-6fb0-4197-a6fa-b5e5f909ee14/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2024-11-13 14:28:14,040 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f0054df-6fb0-4197-a6fa-b5e5f909ee14/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:28:14,041 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 1186 more)] === [2024-11-13 14:28:14,042 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:28:14,042 INFO L85 PathProgramCache]: Analyzing trace with hash -967532700, now seen corresponding path program 1 times [2024-11-13 14:28:14,043 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-13 14:28:14,043 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [114468992] [2024-11-13 14:28:14,043 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:28:14,043 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:28:14,043 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f0054df-6fb0-4197-a6fa-b5e5f909ee14/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:28:14,045 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f0054df-6fb0-4197-a6fa-b5e5f909ee14/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 14:28:14,048 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f0054df-6fb0-4197-a6fa-b5e5f909ee14/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2024-11-13 14:28:14,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:28:14,338 INFO L255 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-13 14:28:14,340 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 14:28:14,407 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:28:14,407 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 14:28:14,407 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-13 14:28:14,407 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [114468992] [2024-11-13 14:28:14,408 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [114468992] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 14:28:14,408 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 14:28:14,408 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-13 14:28:14,408 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1849196492] [2024-11-13 14:28:14,408 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 14:28:14,408 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-13 14:28:14,408 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-13 14:28:14,409 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-13 14:28:14,409 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-13 14:28:14,409 INFO L87 Difference]: Start difference. First operand 3685 states and 4923 transitions. Second operand has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:28:14,486 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:28:14,486 INFO L93 Difference]: Finished difference Result 3667 states and 4889 transitions. [2024-11-13 14:28:14,486 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-13 14:28:14,486 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 52 [2024-11-13 14:28:14,487 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:28:14,491 INFO L225 Difference]: With dead ends: 3667 [2024-11-13 14:28:14,491 INFO L226 Difference]: Without dead ends: 3667 [2024-11-13 14:28:14,491 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 [2024-11-13 14:28:14,492 INFO L432 NwaCegarLoop]: 2203 mSDtfsCounter, 27 mSDsluCounter, 4369 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 6572 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-13 14:28:14,492 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [27 Valid, 6572 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-13 14:28:14,496 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3667 states. [2024-11-13 14:28:14,519 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3667 to 3667. [2024-11-13 14:28:14,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3667 states, 2720 states have (on average 1.7783088235294118) internal successors, (4837), 3641 states have internal predecessors, (4837), 26 states have call successors, (26), 3 states have call predecessors, (26), 3 states have return successors, (26), 23 states have call predecessors, (26), 26 states have call successors, (26) [2024-11-13 14:28:14,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3667 states to 3667 states and 4889 transitions. [2024-11-13 14:28:14,528 INFO L78 Accepts]: Start accepts. Automaton has 3667 states and 4889 transitions. Word has length 52 [2024-11-13 14:28:14,528 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:28:14,528 INFO L471 AbstractCegarLoop]: Abstraction has 3667 states and 4889 transitions. [2024-11-13 14:28:14,528 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:28:14,528 INFO L276 IsEmpty]: Start isEmpty. Operand 3667 states and 4889 transitions. [2024-11-13 14:28:14,528 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2024-11-13 14:28:14,529 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:28:14,529 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] [2024-11-13 14:28:14,551 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f0054df-6fb0-4197-a6fa-b5e5f909ee14/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Ended with exit code 0 [2024-11-13 14:28:14,729 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f0054df-6fb0-4197-a6fa-b5e5f909ee14/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:28:14,729 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr427REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 1186 more)] === [2024-11-13 14:28:14,729 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:28:14,730 INFO L85 PathProgramCache]: Analyzing trace with hash 2133332190, now seen corresponding path program 1 times [2024-11-13 14:28:14,730 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-13 14:28:14,730 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [441503537] [2024-11-13 14:28:14,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:28:14,730 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:28:14,730 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f0054df-6fb0-4197-a6fa-b5e5f909ee14/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:28:14,732 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f0054df-6fb0-4197-a6fa-b5e5f909ee14/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 14:28:14,733 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f0054df-6fb0-4197-a6fa-b5e5f909ee14/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2024-11-13 14:28:15,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:28:15,081 INFO L255 TraceCheckSpWp]: Trace formula consists of 228 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-13 14:28:15,082 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 14:28:15,422 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:28:15,422 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 14:28:15,422 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-13 14:28:15,422 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [441503537] [2024-11-13 14:28:15,422 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [441503537] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 14:28:15,423 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 14:28:15,423 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-13 14:28:15,423 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2145973014] [2024-11-13 14:28:15,423 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 14:28:15,424 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-13 14:28:15,425 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-13 14:28:15,425 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-13 14:28:15,425 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 14:28:15,425 INFO L87 Difference]: Start difference. First operand 3667 states and 4889 transitions. Second operand has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 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) [2024-11-13 14:28:15,681 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:28:15,682 INFO L93 Difference]: Finished difference Result 4960 states and 6194 transitions. [2024-11-13 14:28:15,682 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-13 14:28:15,682 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 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 52 [2024-11-13 14:28:15,683 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:28:15,690 INFO L225 Difference]: With dead ends: 4960 [2024-11-13 14:28:15,690 INFO L226 Difference]: Without dead ends: 4960 [2024-11-13 14:28:15,691 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 14:28:15,692 INFO L432 NwaCegarLoop]: 2303 mSDtfsCounter, 1393 mSDsluCounter, 2156 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1400 SdHoareTripleChecker+Valid, 4459 SdHoareTripleChecker+Invalid, 66 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-13 14:28:15,692 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1400 Valid, 4459 Invalid, 66 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-13 14:28:15,701 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4960 states. [2024-11-13 14:28:15,744 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4960 to 4195. [2024-11-13 14:28:15,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4195 states, 3244 states have (on average 1.7604808877928484) internal successors, (5711), 4162 states have internal predecessors, (5711), 33 states have call successors, (33), 3 states have call predecessors, (33), 3 states have return successors, (33), 30 states have call predecessors, (33), 33 states have call successors, (33) [2024-11-13 14:28:15,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4195 states to 4195 states and 5777 transitions. [2024-11-13 14:28:15,755 INFO L78 Accepts]: Start accepts. Automaton has 4195 states and 5777 transitions. Word has length 52 [2024-11-13 14:28:15,755 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:28:15,756 INFO L471 AbstractCegarLoop]: Abstraction has 4195 states and 5777 transitions. [2024-11-13 14:28:15,756 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 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) [2024-11-13 14:28:15,756 INFO L276 IsEmpty]: Start isEmpty. Operand 4195 states and 5777 transitions. [2024-11-13 14:28:15,756 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2024-11-13 14:28:15,757 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:28:15,757 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] [2024-11-13 14:28:15,781 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f0054df-6fb0-4197-a6fa-b5e5f909ee14/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Ended with exit code 0 [2024-11-13 14:28:15,957 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f0054df-6fb0-4197-a6fa-b5e5f909ee14/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:28:15,957 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr73REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 1186 more)] === [2024-11-13 14:28:15,958 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:28:15,958 INFO L85 PathProgramCache]: Analyzing trace with hash 709523097, now seen corresponding path program 1 times [2024-11-13 14:28:15,958 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-13 14:28:15,958 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1446145484] [2024-11-13 14:28:15,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:28:15,958 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:28:15,958 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f0054df-6fb0-4197-a6fa-b5e5f909ee14/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:28:15,960 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f0054df-6fb0-4197-a6fa-b5e5f909ee14/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 14:28:15,961 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f0054df-6fb0-4197-a6fa-b5e5f909ee14/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2024-11-13 14:28:16,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:28:16,318 INFO L255 TraceCheckSpWp]: Trace formula consists of 263 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-13 14:28:16,320 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 14:28:16,372 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:28:16,372 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 14:28:16,373 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-13 14:28:16,373 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1446145484] [2024-11-13 14:28:16,373 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1446145484] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 14:28:16,373 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 14:28:16,373 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-13 14:28:16,373 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1713639213] [2024-11-13 14:28:16,373 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 14:28:16,373 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-13 14:28:16,373 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-13 14:28:16,373 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-13 14:28:16,374 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-13 14:28:16,374 INFO L87 Difference]: Start difference. First operand 4195 states and 5777 transitions. Second operand has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 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) [2024-11-13 14:28:16,450 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:28:16,450 INFO L93 Difference]: Finished difference Result 4177 states and 5747 transitions. [2024-11-13 14:28:16,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-13 14:28:16,451 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 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 55 [2024-11-13 14:28:16,451 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:28:16,455 INFO L225 Difference]: With dead ends: 4177 [2024-11-13 14:28:16,455 INFO L226 Difference]: Without dead ends: 4177 [2024-11-13 14:28:16,456 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-13 14:28:16,456 INFO L432 NwaCegarLoop]: 2199 mSDtfsCounter, 21 mSDsluCounter, 4367 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 6566 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 [2024-11-13 14:28:16,457 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 6566 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-13 14:28:16,461 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4177 states. [2024-11-13 14:28:16,495 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4177 to 4177. [2024-11-13 14:28:16,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4177 states, 3226 states have (on average 1.7610043397396156) internal successors, (5681), 4144 states have internal predecessors, (5681), 33 states have call successors, (33), 3 states have call predecessors, (33), 3 states have return successors, (33), 30 states have call predecessors, (33), 33 states have call successors, (33) [2024-11-13 14:28:16,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4177 states to 4177 states and 5747 transitions. [2024-11-13 14:28:16,506 INFO L78 Accepts]: Start accepts. Automaton has 4177 states and 5747 transitions. Word has length 55 [2024-11-13 14:28:16,506 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:28:16,506 INFO L471 AbstractCegarLoop]: Abstraction has 4177 states and 5747 transitions. [2024-11-13 14:28:16,506 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 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) [2024-11-13 14:28:16,506 INFO L276 IsEmpty]: Start isEmpty. Operand 4177 states and 5747 transitions. [2024-11-13 14:28:16,507 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2024-11-13 14:28:16,507 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:28:16,507 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] [2024-11-13 14:28:16,531 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f0054df-6fb0-4197-a6fa-b5e5f909ee14/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Ended with exit code 0 [2024-11-13 14:28:16,707 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f0054df-6fb0-4197-a6fa-b5e5f909ee14/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:28:16,708 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr381REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 1186 more)] === [2024-11-13 14:28:16,708 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:28:16,708 INFO L85 PathProgramCache]: Analyzing trace with hash 1361620203, now seen corresponding path program 1 times [2024-11-13 14:28:16,708 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-13 14:28:16,708 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [784847487] [2024-11-13 14:28:16,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:28:16,709 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:28:16,709 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f0054df-6fb0-4197-a6fa-b5e5f909ee14/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:28:16,711 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f0054df-6fb0-4197-a6fa-b5e5f909ee14/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 14:28:16,713 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f0054df-6fb0-4197-a6fa-b5e5f909ee14/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2024-11-13 14:28:17,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:28:17,041 INFO L255 TraceCheckSpWp]: Trace formula consists of 263 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-13 14:28:17,042 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 14:28:17,102 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:28:17,102 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 14:28:17,102 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-13 14:28:17,102 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [784847487] [2024-11-13 14:28:17,102 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [784847487] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 14:28:17,102 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 14:28:17,102 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-13 14:28:17,102 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1400961102] [2024-11-13 14:28:17,102 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 14:28:17,103 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-13 14:28:17,103 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-13 14:28:17,103 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-13 14:28:17,103 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-13 14:28:17,103 INFO L87 Difference]: Start difference. First operand 4177 states and 5747 transitions. Second operand has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 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) [2024-11-13 14:28:17,190 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:28:17,190 INFO L93 Difference]: Finished difference Result 4135 states and 5677 transitions. [2024-11-13 14:28:17,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-13 14:28:17,191 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 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 55 [2024-11-13 14:28:17,191 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:28:17,195 INFO L225 Difference]: With dead ends: 4135 [2024-11-13 14:28:17,195 INFO L226 Difference]: Without dead ends: 4135 [2024-11-13 14:28:17,195 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-13 14:28:17,196 INFO L432 NwaCegarLoop]: 2195 mSDtfsCounter, 27 mSDsluCounter, 4353 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 6548 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 [2024-11-13 14:28:17,197 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [27 Valid, 6548 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-13 14:28:17,199 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4135 states. [2024-11-13 14:28:17,239 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4135 to 4135. [2024-11-13 14:28:17,241 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4135 states, 3184 states have (on average 1.762248743718593) internal successors, (5611), 4102 states have internal predecessors, (5611), 33 states have call successors, (33), 3 states have call predecessors, (33), 3 states have return successors, (33), 30 states have call predecessors, (33), 33 states have call successors, (33) [2024-11-13 14:28:17,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4135 states to 4135 states and 5677 transitions. [2024-11-13 14:28:17,245 INFO L78 Accepts]: Start accepts. Automaton has 4135 states and 5677 transitions. Word has length 55 [2024-11-13 14:28:17,245 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:28:17,245 INFO L471 AbstractCegarLoop]: Abstraction has 4135 states and 5677 transitions. [2024-11-13 14:28:17,246 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 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) [2024-11-13 14:28:17,246 INFO L276 IsEmpty]: Start isEmpty. Operand 4135 states and 5677 transitions. [2024-11-13 14:28:17,246 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2024-11-13 14:28:17,246 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:28:17,246 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] [2024-11-13 14:28:17,262 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f0054df-6fb0-4197-a6fa-b5e5f909ee14/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Ended with exit code 0 [2024-11-13 14:28:17,446 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f0054df-6fb0-4197-a6fa-b5e5f909ee14/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:28:17,447 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 1186 more)] === [2024-11-13 14:28:17,447 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:28:17,447 INFO L85 PathProgramCache]: Analyzing trace with hash 79986328, now seen corresponding path program 1 times [2024-11-13 14:28:17,447 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-13 14:28:17,448 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1697625885] [2024-11-13 14:28:17,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:28:17,448 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:28:17,448 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f0054df-6fb0-4197-a6fa-b5e5f909ee14/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:28:17,449 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f0054df-6fb0-4197-a6fa-b5e5f909ee14/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 14:28:17,450 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f0054df-6fb0-4197-a6fa-b5e5f909ee14/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2024-11-13 14:28:17,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:28:17,744 INFO L255 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-13 14:28:17,746 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 14:28:17,755 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-13 14:28:17,755 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-13 14:28:17,758 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 33 treesize of output 31 [2024-11-13 14:28:17,799 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-13 14:28:17,799 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 62 treesize of output 22 [2024-11-13 14:28:17,822 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:28:17,822 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 14:28:17,822 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-13 14:28:17,822 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1697625885] [2024-11-13 14:28:17,822 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1697625885] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 14:28:17,822 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 14:28:17,822 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-13 14:28:17,822 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1319572708] [2024-11-13 14:28:17,822 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 14:28:17,823 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-13 14:28:17,823 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-13 14:28:17,823 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-13 14:28:17,823 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-13 14:28:17,824 INFO L87 Difference]: Start difference. First operand 4135 states and 5677 transitions. Second operand has 4 states, 4 states have (on average 14.5) internal successors, (58), 4 states have internal predecessors, (58), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:28:18,921 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:28:18,921 INFO L93 Difference]: Finished difference Result 4693 states and 6159 transitions. [2024-11-13 14:28:18,921 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-13 14:28:18,921 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.5) internal successors, (58), 4 states have internal predecessors, (58), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 60 [2024-11-13 14:28:18,921 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:28:18,926 INFO L225 Difference]: With dead ends: 4693 [2024-11-13 14:28:18,926 INFO L226 Difference]: Without dead ends: 4693 [2024-11-13 14:28:18,926 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 57 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-13 14:28:18,927 INFO L432 NwaCegarLoop]: 2317 mSDtfsCounter, 1652 mSDsluCounter, 3699 mSDsCounter, 0 mSdLazyCounter, 260 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1661 SdHoareTripleChecker+Valid, 6016 SdHoareTripleChecker+Invalid, 262 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 260 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-11-13 14:28:18,927 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1661 Valid, 6016 Invalid, 262 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 260 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-11-13 14:28:18,930 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4693 states. [2024-11-13 14:28:18,973 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4693 to 3847. [2024-11-13 14:28:18,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3847 states, 2899 states have (on average 1.7768195929630908) internal successors, (5151), 3817 states have internal predecessors, (5151), 30 states have call successors, (30), 3 states have call predecessors, (30), 3 states have return successors, (30), 27 states have call predecessors, (30), 30 states have call successors, (30) [2024-11-13 14:28:18,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3847 states to 3847 states and 5211 transitions. [2024-11-13 14:28:18,980 INFO L78 Accepts]: Start accepts. Automaton has 3847 states and 5211 transitions. Word has length 60 [2024-11-13 14:28:18,980 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:28:18,980 INFO L471 AbstractCegarLoop]: Abstraction has 3847 states and 5211 transitions. [2024-11-13 14:28:18,980 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.5) internal successors, (58), 4 states have internal predecessors, (58), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:28:18,980 INFO L276 IsEmpty]: Start isEmpty. Operand 3847 states and 5211 transitions. [2024-11-13 14:28:18,980 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2024-11-13 14:28:18,980 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:28:18,981 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] [2024-11-13 14:28:18,995 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f0054df-6fb0-4197-a6fa-b5e5f909ee14/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Ended with exit code 0 [2024-11-13 14:28:19,181 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f0054df-6fb0-4197-a6fa-b5e5f909ee14/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:28:19,181 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr73REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 1186 more)] === [2024-11-13 14:28:19,181 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:28:19,182 INFO L85 PathProgramCache]: Analyzing trace with hash -1958904627, now seen corresponding path program 1 times [2024-11-13 14:28:19,182 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-13 14:28:19,182 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1329897462] [2024-11-13 14:28:19,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:28:19,182 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:28:19,182 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f0054df-6fb0-4197-a6fa-b5e5f909ee14/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:28:19,184 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f0054df-6fb0-4197-a6fa-b5e5f909ee14/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 14:28:19,185 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f0054df-6fb0-4197-a6fa-b5e5f909ee14/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2024-11-13 14:28:19,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:28:19,592 INFO L255 TraceCheckSpWp]: Trace formula consists of 287 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-13 14:28:19,598 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 14:28:19,613 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 [2024-11-13 14:28:20,239 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 14:28:20,240 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 [2024-11-13 14:28:20,252 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2024-11-13 14:28:20,252 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 [2024-11-13 14:28:20,260 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:28:20,260 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 14:28:20,260 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-13 14:28:20,260 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1329897462] [2024-11-13 14:28:20,260 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1329897462] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 14:28:20,260 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 14:28:20,261 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-13 14:28:20,261 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1578075277] [2024-11-13 14:28:20,261 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 14:28:20,261 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-13 14:28:20,261 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-13 14:28:20,261 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-13 14:28:20,261 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-13 14:28:20,261 INFO L87 Difference]: Start difference. First operand 3847 states and 5211 transitions. Second operand has 5 states, 4 states have (on average 15.75) internal successors, (63), 5 states have internal predecessors, (63), 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) [2024-11-13 14:28:26,521 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:28:26,521 INFO L93 Difference]: Finished difference Result 3763 states and 5023 transitions. [2024-11-13 14:28:26,522 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-13 14:28:26,522 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 15.75) internal successors, (63), 5 states have internal predecessors, (63), 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 63 [2024-11-13 14:28:26,522 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:28:26,525 INFO L225 Difference]: With dead ends: 3763 [2024-11-13 14:28:26,525 INFO L226 Difference]: Without dead ends: 3763 [2024-11-13 14:28:26,526 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 59 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2024-11-13 14:28:26,526 INFO L432 NwaCegarLoop]: 1051 mSDtfsCounter, 3254 mSDsluCounter, 800 mSDsCounter, 0 mSdLazyCounter, 2379 mSolverCounterSat, 107 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3264 SdHoareTripleChecker+Valid, 1851 SdHoareTripleChecker+Invalid, 2486 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 107 IncrementalHoareTripleChecker+Valid, 2379 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.2s IncrementalHoareTripleChecker+Time [2024-11-13 14:28:26,526 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3264 Valid, 1851 Invalid, 2486 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [107 Valid, 2379 Invalid, 0 Unknown, 0 Unchecked, 6.2s Time] [2024-11-13 14:28:26,529 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3763 states. [2024-11-13 14:28:26,559 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3763 to 3656. [2024-11-13 14:28:26,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3656 states, 2792 states have (on average 1.7052292263610316) internal successors, (4761), 3626 states have internal predecessors, (4761), 30 states have call successors, (30), 3 states have call predecessors, (30), 3 states have return successors, (30), 27 states have call predecessors, (30), 30 states have call successors, (30) [2024-11-13 14:28:26,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3656 states to 3656 states and 4821 transitions. [2024-11-13 14:28:26,568 INFO L78 Accepts]: Start accepts. Automaton has 3656 states and 4821 transitions. Word has length 63 [2024-11-13 14:28:26,568 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:28:26,568 INFO L471 AbstractCegarLoop]: Abstraction has 3656 states and 4821 transitions. [2024-11-13 14:28:26,568 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 15.75) internal successors, (63), 5 states have internal predecessors, (63), 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) [2024-11-13 14:28:26,568 INFO L276 IsEmpty]: Start isEmpty. Operand 3656 states and 4821 transitions. [2024-11-13 14:28:26,569 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2024-11-13 14:28:26,569 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:28:26,569 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] [2024-11-13 14:28:26,599 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f0054df-6fb0-4197-a6fa-b5e5f909ee14/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Ended with exit code 0 [2024-11-13 14:28:26,769 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f0054df-6fb0-4197-a6fa-b5e5f909ee14/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:28:26,770 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr78REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 1186 more)] === [2024-11-13 14:28:26,771 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:28:26,771 INFO L85 PathProgramCache]: Analyzing trace with hash -99461187, now seen corresponding path program 1 times [2024-11-13 14:28:26,771 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-13 14:28:26,771 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [340138476] [2024-11-13 14:28:26,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:28:26,771 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:28:26,772 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f0054df-6fb0-4197-a6fa-b5e5f909ee14/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:28:26,775 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f0054df-6fb0-4197-a6fa-b5e5f909ee14/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 14:28:26,776 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f0054df-6fb0-4197-a6fa-b5e5f909ee14/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2024-11-13 14:28:27,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:28:27,123 INFO L255 TraceCheckSpWp]: Trace formula consists of 314 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-13 14:28:27,126 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 14:28:27,134 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 [2024-11-13 14:28:27,153 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 [2024-11-13 14:28:27,190 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 [2024-11-13 14:28:27,204 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:28:27,205 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 14:28:27,205 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-13 14:28:27,205 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [340138476] [2024-11-13 14:28:27,205 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [340138476] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 14:28:27,205 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 14:28:27,205 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-13 14:28:27,205 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1244605508] [2024-11-13 14:28:27,205 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 14:28:27,206 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-13 14:28:27,206 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-13 14:28:27,206 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-13 14:28:27,206 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-13 14:28:27,206 INFO L87 Difference]: Start difference. First operand 3656 states and 4821 transitions. Second operand has 5 states, 4 states have (on average 17.0) internal successors, (68), 5 states have internal predecessors, (68), 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) [2024-11-13 14:28:33,153 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:28:33,153 INFO L93 Difference]: Finished difference Result 3655 states and 4819 transitions. [2024-11-13 14:28:33,153 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-13 14:28:33,153 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 17.0) internal successors, (68), 5 states have internal predecessors, (68), 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 68 [2024-11-13 14:28:33,154 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:28:33,157 INFO L225 Difference]: With dead ends: 3655 [2024-11-13 14:28:33,157 INFO L226 Difference]: Without dead ends: 3655 [2024-11-13 14:28:33,157 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 64 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-13 14:28:33,159 INFO L432 NwaCegarLoop]: 2122 mSDtfsCounter, 2 mSDsluCounter, 3531 mSDsCounter, 0 mSdLazyCounter, 2842 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 5653 SdHoareTripleChecker+Invalid, 2843 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 2842 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.9s IncrementalHoareTripleChecker+Time [2024-11-13 14:28:33,159 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 5653 Invalid, 2843 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 2842 Invalid, 0 Unknown, 0 Unchecked, 5.9s Time] [2024-11-13 14:28:33,162 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3655 states. [2024-11-13 14:28:33,184 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3655 to 3655. [2024-11-13 14:28:33,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3655 states, 2792 states have (on average 1.704512893982808) internal successors, (4759), 3625 states have internal predecessors, (4759), 30 states have call successors, (30), 3 states have call predecessors, (30), 3 states have return successors, (30), 27 states have call predecessors, (30), 30 states have call successors, (30) [2024-11-13 14:28:33,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3655 states to 3655 states and 4819 transitions. [2024-11-13 14:28:33,191 INFO L78 Accepts]: Start accepts. Automaton has 3655 states and 4819 transitions. Word has length 68 [2024-11-13 14:28:33,191 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:28:33,191 INFO L471 AbstractCegarLoop]: Abstraction has 3655 states and 4819 transitions. [2024-11-13 14:28:33,191 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 17.0) internal successors, (68), 5 states have internal predecessors, (68), 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) [2024-11-13 14:28:33,191 INFO L276 IsEmpty]: Start isEmpty. Operand 3655 states and 4819 transitions. [2024-11-13 14:28:33,192 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2024-11-13 14:28:33,192 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:28:33,192 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] [2024-11-13 14:28:33,214 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f0054df-6fb0-4197-a6fa-b5e5f909ee14/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Ended with exit code 0 [2024-11-13 14:28:33,392 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f0054df-6fb0-4197-a6fa-b5e5f909ee14/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:28:33,392 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr79REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 1186 more)] === [2024-11-13 14:28:33,393 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:28:33,393 INFO L85 PathProgramCache]: Analyzing trace with hash -99461186, now seen corresponding path program 1 times [2024-11-13 14:28:33,393 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-13 14:28:33,393 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1427690788] [2024-11-13 14:28:33,393 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:28:33,393 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:28:33,393 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f0054df-6fb0-4197-a6fa-b5e5f909ee14/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:28:33,395 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f0054df-6fb0-4197-a6fa-b5e5f909ee14/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 14:28:33,396 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f0054df-6fb0-4197-a6fa-b5e5f909ee14/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2024-11-13 14:28:33,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:28:33,792 INFO L255 TraceCheckSpWp]: Trace formula consists of 314 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-11-13 14:28:33,796 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 14:28:33,808 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 [2024-11-13 14:28:33,833 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 [2024-11-13 14:28:33,843 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 [2024-11-13 14:28:33,890 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 [2024-11-13 14:28:33,910 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:28:33,910 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 14:28:33,910 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-13 14:28:33,911 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1427690788] [2024-11-13 14:28:33,911 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1427690788] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 14:28:33,911 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 14:28:33,911 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-13 14:28:33,911 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1955888981] [2024-11-13 14:28:33,911 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 14:28:33,911 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-13 14:28:33,911 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-13 14:28:33,912 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-13 14:28:33,912 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-13 14:28:33,912 INFO L87 Difference]: Start difference. First operand 3655 states and 4819 transitions. Second operand has 5 states, 4 states have (on average 17.0) internal successors, (68), 5 states have internal predecessors, (68), 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) [2024-11-13 14:28:41,916 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:28:41,916 INFO L93 Difference]: Finished difference Result 3654 states and 4817 transitions. [2024-11-13 14:28:41,916 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-13 14:28:41,917 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 17.0) internal successors, (68), 5 states have internal predecessors, (68), 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 68 [2024-11-13 14:28:41,917 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:28:41,921 INFO L225 Difference]: With dead ends: 3654 [2024-11-13 14:28:41,921 INFO L226 Difference]: Without dead ends: 3654 [2024-11-13 14:28:41,922 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 64 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-13 14:28:41,922 INFO L432 NwaCegarLoop]: 2122 mSDtfsCounter, 1 mSDsluCounter, 3509 mSDsCounter, 0 mSdLazyCounter, 2861 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 5631 SdHoareTripleChecker+Invalid, 2862 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 2861 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.9s IncrementalHoareTripleChecker+Time [2024-11-13 14:28:41,922 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 5631 Invalid, 2862 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 2861 Invalid, 0 Unknown, 0 Unchecked, 7.9s Time] [2024-11-13 14:28:41,926 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3654 states. [2024-11-13 14:28:41,963 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3654 to 3654. [2024-11-13 14:28:41,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3654 states, 2790 states have (on average 1.7050179211469534) internal successors, (4757), 3624 states have internal predecessors, (4757), 30 states have call successors, (30), 3 states have call predecessors, (30), 3 states have return successors, (30), 27 states have call predecessors, (30), 30 states have call successors, (30) [2024-11-13 14:28:41,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3654 states to 3654 states and 4817 transitions. [2024-11-13 14:28:41,969 INFO L78 Accepts]: Start accepts. Automaton has 3654 states and 4817 transitions. Word has length 68 [2024-11-13 14:28:41,969 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:28:41,970 INFO L471 AbstractCegarLoop]: Abstraction has 3654 states and 4817 transitions. [2024-11-13 14:28:41,970 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 17.0) internal successors, (68), 5 states have internal predecessors, (68), 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) [2024-11-13 14:28:41,970 INFO L276 IsEmpty]: Start isEmpty. Operand 3654 states and 4817 transitions. [2024-11-13 14:28:41,970 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2024-11-13 14:28:41,970 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:28:41,970 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] [2024-11-13 14:28:41,989 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f0054df-6fb0-4197-a6fa-b5e5f909ee14/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Ended with exit code 0 [2024-11-13 14:28:42,171 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f0054df-6fb0-4197-a6fa-b5e5f909ee14/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:28:42,171 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr386REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 1186 more)] === [2024-11-13 14:28:42,171 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:28:42,172 INFO L85 PathProgramCache]: Analyzing trace with hash 935140477, now seen corresponding path program 1 times [2024-11-13 14:28:42,172 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-13 14:28:42,172 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1253780018] [2024-11-13 14:28:42,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:28:42,172 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:28:42,172 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f0054df-6fb0-4197-a6fa-b5e5f909ee14/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:28:42,174 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f0054df-6fb0-4197-a6fa-b5e5f909ee14/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 14:28:42,175 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f0054df-6fb0-4197-a6fa-b5e5f909ee14/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2024-11-13 14:28:42,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:28:42,550 INFO L255 TraceCheckSpWp]: Trace formula consists of 314 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-13 14:28:42,552 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 14:28:42,558 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 [2024-11-13 14:28:42,577 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 [2024-11-13 14:28:42,604 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 [2024-11-13 14:28:42,616 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:28:42,616 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 14:28:42,616 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-13 14:28:42,616 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1253780018] [2024-11-13 14:28:42,617 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1253780018] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 14:28:42,617 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 14:28:42,617 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-13 14:28:42,617 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1079998510] [2024-11-13 14:28:42,617 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 14:28:42,617 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-13 14:28:42,617 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-13 14:28:42,618 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-13 14:28:42,618 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-13 14:28:42,618 INFO L87 Difference]: Start difference. First operand 3654 states and 4817 transitions. Second operand has 5 states, 4 states have (on average 17.0) internal successors, (68), 5 states have internal predecessors, (68), 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) [2024-11-13 14:28:48,877 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:28:48,877 INFO L93 Difference]: Finished difference Result 3653 states and 4814 transitions. [2024-11-13 14:28:48,877 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-13 14:28:48,878 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 17.0) internal successors, (68), 5 states have internal predecessors, (68), 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 68 [2024-11-13 14:28:48,878 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:28:48,881 INFO L225 Difference]: With dead ends: 3653 [2024-11-13 14:28:48,881 INFO L226 Difference]: Without dead ends: 3653 [2024-11-13 14:28:48,881 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 64 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-13 14:28:48,882 INFO L432 NwaCegarLoop]: 2120 mSDtfsCounter, 2 mSDsluCounter, 3528 mSDsCounter, 0 mSdLazyCounter, 2839 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 5648 SdHoareTripleChecker+Invalid, 2840 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 2839 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.2s IncrementalHoareTripleChecker+Time [2024-11-13 14:28:48,882 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 5648 Invalid, 2840 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 2839 Invalid, 0 Unknown, 0 Unchecked, 6.2s Time] [2024-11-13 14:28:48,884 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3653 states. [2024-11-13 14:28:48,908 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3653 to 3653. [2024-11-13 14:28:48,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3653 states, 2790 states have (on average 1.7039426523297492) internal successors, (4754), 3623 states have internal predecessors, (4754), 30 states have call successors, (30), 3 states have call predecessors, (30), 3 states have return successors, (30), 27 states have call predecessors, (30), 30 states have call successors, (30) [2024-11-13 14:28:48,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3653 states to 3653 states and 4814 transitions. [2024-11-13 14:28:48,916 INFO L78 Accepts]: Start accepts. Automaton has 3653 states and 4814 transitions. Word has length 68 [2024-11-13 14:28:48,916 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:28:48,916 INFO L471 AbstractCegarLoop]: Abstraction has 3653 states and 4814 transitions. [2024-11-13 14:28:48,916 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 17.0) internal successors, (68), 5 states have internal predecessors, (68), 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) [2024-11-13 14:28:48,917 INFO L276 IsEmpty]: Start isEmpty. Operand 3653 states and 4814 transitions. [2024-11-13 14:28:48,917 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2024-11-13 14:28:48,917 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:28:48,917 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] [2024-11-13 14:28:48,936 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f0054df-6fb0-4197-a6fa-b5e5f909ee14/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Ended with exit code 0 [2024-11-13 14:28:49,118 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f0054df-6fb0-4197-a6fa-b5e5f909ee14/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:28:49,118 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr387REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 1186 more)] === [2024-11-13 14:28:49,118 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:28:49,118 INFO L85 PathProgramCache]: Analyzing trace with hash 935140478, now seen corresponding path program 1 times [2024-11-13 14:28:49,119 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-13 14:28:49,119 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [269314243] [2024-11-13 14:28:49,119 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:28:49,119 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:28:49,119 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f0054df-6fb0-4197-a6fa-b5e5f909ee14/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:28:49,121 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f0054df-6fb0-4197-a6fa-b5e5f909ee14/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 14:28:49,124 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f0054df-6fb0-4197-a6fa-b5e5f909ee14/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2024-11-13 14:28:49,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:28:49,512 INFO L255 TraceCheckSpWp]: Trace formula consists of 314 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-11-13 14:28:49,514 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 14:28:49,526 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2024-11-13 14:28:49,548 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 [2024-11-13 14:28:49,559 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 [2024-11-13 14:28:49,626 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 [2024-11-13 14:28:49,654 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:28:49,654 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 14:28:49,654 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-13 14:28:49,655 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [269314243] [2024-11-13 14:28:49,655 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [269314243] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 14:28:49,655 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 14:28:49,655 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-13 14:28:49,655 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2005537126] [2024-11-13 14:28:49,655 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 14:28:49,655 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-13 14:28:49,655 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-13 14:28:49,656 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-13 14:28:49,656 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-13 14:28:49,656 INFO L87 Difference]: Start difference. First operand 3653 states and 4814 transitions. Second operand has 5 states, 4 states have (on average 17.0) internal successors, (68), 5 states have internal predecessors, (68), 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) [2024-11-13 14:28:57,727 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:28:57,727 INFO L93 Difference]: Finished difference Result 3652 states and 4811 transitions. [2024-11-13 14:28:57,727 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-13 14:28:57,727 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 17.0) internal successors, (68), 5 states have internal predecessors, (68), 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 68 [2024-11-13 14:28:57,728 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:28:57,730 INFO L225 Difference]: With dead ends: 3652 [2024-11-13 14:28:57,731 INFO L226 Difference]: Without dead ends: 3652 [2024-11-13 14:28:57,731 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 64 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-13 14:28:57,731 INFO L432 NwaCegarLoop]: 2120 mSDtfsCounter, 1 mSDsluCounter, 3506 mSDsCounter, 0 mSdLazyCounter, 2858 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 5626 SdHoareTripleChecker+Invalid, 2859 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 2858 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.9s IncrementalHoareTripleChecker+Time [2024-11-13 14:28:57,732 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 5626 Invalid, 2859 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 2858 Invalid, 0 Unknown, 0 Unchecked, 7.9s Time] [2024-11-13 14:28:57,734 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3652 states. [2024-11-13 14:28:57,755 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3652 to 3652. [2024-11-13 14:28:57,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3652 states, 2787 states have (on average 1.7047003946896304) internal successors, (4751), 3622 states have internal predecessors, (4751), 30 states have call successors, (30), 3 states have call predecessors, (30), 3 states have return successors, (30), 27 states have call predecessors, (30), 30 states have call successors, (30) [2024-11-13 14:28:57,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3652 states to 3652 states and 4811 transitions. [2024-11-13 14:28:57,761 INFO L78 Accepts]: Start accepts. Automaton has 3652 states and 4811 transitions. Word has length 68 [2024-11-13 14:28:57,761 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:28:57,762 INFO L471 AbstractCegarLoop]: Abstraction has 3652 states and 4811 transitions. [2024-11-13 14:28:57,762 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 17.0) internal successors, (68), 5 states have internal predecessors, (68), 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) [2024-11-13 14:28:57,762 INFO L276 IsEmpty]: Start isEmpty. Operand 3652 states and 4811 transitions. [2024-11-13 14:28:57,762 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2024-11-13 14:28:57,762 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:28:57,763 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] [2024-11-13 14:28:57,780 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f0054df-6fb0-4197-a6fa-b5e5f909ee14/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Forceful destruction successful, exit code 0 [2024-11-13 14:28:57,963 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f0054df-6fb0-4197-a6fa-b5e5f909ee14/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:28:57,963 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr82REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 1186 more)] === [2024-11-13 14:28:57,963 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:28:57,964 INFO L85 PathProgramCache]: Analyzing trace with hash 144253732, now seen corresponding path program 1 times [2024-11-13 14:28:57,964 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-13 14:28:57,964 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1762740507] [2024-11-13 14:28:57,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:28:57,964 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:28:57,964 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f0054df-6fb0-4197-a6fa-b5e5f909ee14/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:28:57,966 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f0054df-6fb0-4197-a6fa-b5e5f909ee14/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 14:28:57,968 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f0054df-6fb0-4197-a6fa-b5e5f909ee14/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2024-11-13 14:28:58,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:28:58,381 INFO L255 TraceCheckSpWp]: Trace formula consists of 340 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-13 14:28:58,384 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 14:28:58,393 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 [2024-11-13 14:28:58,516 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 [2024-11-13 14:28:58,542 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:28:58,543 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 14:28:58,543 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-13 14:28:58,543 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1762740507] [2024-11-13 14:28:58,543 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1762740507] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 14:28:58,543 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 14:28:58,543 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-13 14:28:58,544 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [604753400] [2024-11-13 14:28:58,544 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 14:28:58,544 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-13 14:28:58,544 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-13 14:28:58,545 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-13 14:28:58,545 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-11-13 14:28:58,545 INFO L87 Difference]: Start difference. First operand 3652 states and 4811 transitions. Second operand has 7 states, 5 states have (on average 14.8) internal successors, (74), 6 states have internal predecessors, (74), 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) [2024-11-13 14:29:07,071 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:29:07,071 INFO L93 Difference]: Finished difference Result 3670 states and 4846 transitions. [2024-11-13 14:29:07,072 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-13 14:29:07,072 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 5 states have (on average 14.8) internal successors, (74), 6 states have internal predecessors, (74), 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 76 [2024-11-13 14:29:07,072 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:29:07,083 INFO L225 Difference]: With dead ends: 3670 [2024-11-13 14:29:07,083 INFO L226 Difference]: Without dead ends: 3670 [2024-11-13 14:29:07,083 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 70 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-11-13 14:29:07,084 INFO L432 NwaCegarLoop]: 2084 mSDtfsCounter, 27 mSDsluCounter, 6909 mSDsCounter, 0 mSdLazyCounter, 3705 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 8993 SdHoareTripleChecker+Invalid, 3716 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 3705 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.4s IncrementalHoareTripleChecker+Time [2024-11-13 14:29:07,084 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [31 Valid, 8993 Invalid, 3716 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [11 Valid, 3705 Invalid, 0 Unknown, 0 Unchecked, 8.4s Time] [2024-11-13 14:29:07,091 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3670 states. [2024-11-13 14:29:07,125 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3670 to 3661. [2024-11-13 14:29:07,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3661 states, 2795 states have (on average 1.7037567084078713) internal successors, (4762), 3629 states have internal predecessors, (4762), 30 states have call successors, (30), 3 states have call predecessors, (30), 4 states have return successors, (44), 29 states have call predecessors, (44), 30 states have call successors, (44) [2024-11-13 14:29:07,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3661 states to 3661 states and 4836 transitions. [2024-11-13 14:29:07,135 INFO L78 Accepts]: Start accepts. Automaton has 3661 states and 4836 transitions. Word has length 76 [2024-11-13 14:29:07,136 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:29:07,136 INFO L471 AbstractCegarLoop]: Abstraction has 3661 states and 4836 transitions. [2024-11-13 14:29:07,136 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 5 states have (on average 14.8) internal successors, (74), 6 states have internal predecessors, (74), 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) [2024-11-13 14:29:07,136 INFO L276 IsEmpty]: Start isEmpty. Operand 3661 states and 4836 transitions. [2024-11-13 14:29:07,137 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2024-11-13 14:29:07,137 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:29:07,137 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] [2024-11-13 14:29:07,160 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f0054df-6fb0-4197-a6fa-b5e5f909ee14/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Ended with exit code 0 [2024-11-13 14:29:07,337 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f0054df-6fb0-4197-a6fa-b5e5f909ee14/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:29:07,338 INFO L396 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr83REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 1186 more)] === [2024-11-13 14:29:07,338 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:29:07,338 INFO L85 PathProgramCache]: Analyzing trace with hash 144253733, now seen corresponding path program 1 times [2024-11-13 14:29:07,338 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-13 14:29:07,338 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [747263403] [2024-11-13 14:29:07,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:29:07,339 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:29:07,339 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f0054df-6fb0-4197-a6fa-b5e5f909ee14/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:29:07,340 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f0054df-6fb0-4197-a6fa-b5e5f909ee14/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 14:29:07,341 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f0054df-6fb0-4197-a6fa-b5e5f909ee14/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2024-11-13 14:29:07,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:29:07,743 INFO L255 TraceCheckSpWp]: Trace formula consists of 340 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-13 14:29:07,744 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 14:29:07,775 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:29:07,775 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 14:29:07,775 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-13 14:29:07,775 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [747263403] [2024-11-13 14:29:07,775 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [747263403] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 14:29:07,775 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 14:29:07,776 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-13 14:29:07,776 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1743831733] [2024-11-13 14:29:07,776 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 14:29:07,776 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-13 14:29:07,776 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-13 14:29:07,777 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-13 14:29:07,777 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-13 14:29:07,777 INFO L87 Difference]: Start difference. First operand 3661 states and 4836 transitions. Second operand has 4 states, 4 states have (on average 18.5) internal successors, (74), 4 states have internal predecessors, (74), 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) [2024-11-13 14:29:07,872 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:29:07,872 INFO L93 Difference]: Finished difference Result 3655 states and 4818 transitions. [2024-11-13 14:29:07,873 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-13 14:29:07,873 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 18.5) internal successors, (74), 4 states have internal predecessors, (74), 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 76 [2024-11-13 14:29:07,873 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:29:07,882 INFO L225 Difference]: With dead ends: 3655 [2024-11-13 14:29:07,883 INFO L226 Difference]: Without dead ends: 3655 [2024-11-13 14:29:07,883 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 73 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-13 14:29:07,883 INFO L432 NwaCegarLoop]: 2119 mSDtfsCounter, 0 mSDsluCounter, 4230 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 6349 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-13 14:29:07,883 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 6349 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-13 14:29:07,887 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3655 states. [2024-11-13 14:29:07,927 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3655 to 3655. [2024-11-13 14:29:07,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3655 states, 2789 states have (on average 1.7045536034420938) internal successors, (4754), 3625 states have internal predecessors, (4754), 30 states have call successors, (30), 3 states have call predecessors, (30), 4 states have return successors, (34), 27 states have call predecessors, (34), 30 states have call successors, (34) [2024-11-13 14:29:07,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3655 states to 3655 states and 4818 transitions. [2024-11-13 14:29:07,937 INFO L78 Accepts]: Start accepts. Automaton has 3655 states and 4818 transitions. Word has length 76 [2024-11-13 14:29:07,937 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:29:07,937 INFO L471 AbstractCegarLoop]: Abstraction has 3655 states and 4818 transitions. [2024-11-13 14:29:07,937 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.5) internal successors, (74), 4 states have internal predecessors, (74), 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) [2024-11-13 14:29:07,938 INFO L276 IsEmpty]: Start isEmpty. Operand 3655 states and 4818 transitions. [2024-11-13 14:29:07,938 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2024-11-13 14:29:07,938 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:29:07,939 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, 1] [2024-11-13 14:29:07,965 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f0054df-6fb0-4197-a6fa-b5e5f909ee14/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Ended with exit code 0 [2024-11-13 14:29:08,139 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f0054df-6fb0-4197-a6fa-b5e5f909ee14/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:29:08,139 INFO L396 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr82REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 1186 more)] === [2024-11-13 14:29:08,139 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:29:08,140 INFO L85 PathProgramCache]: Analyzing trace with hash -872670215, now seen corresponding path program 1 times [2024-11-13 14:29:08,140 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-13 14:29:08,140 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [881990976] [2024-11-13 14:29:08,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:29:08,140 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:29:08,140 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f0054df-6fb0-4197-a6fa-b5e5f909ee14/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:29:08,142 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f0054df-6fb0-4197-a6fa-b5e5f909ee14/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 14:29:08,143 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f0054df-6fb0-4197-a6fa-b5e5f909ee14/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Waiting until timeout for monitored process [2024-11-13 14:29:08,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:29:08,577 INFO L255 TraceCheckSpWp]: Trace formula consists of 351 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-13 14:29:08,579 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 14:29:08,618 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:29:08,618 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 14:29:08,705 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:29:08,705 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-13 14:29:08,705 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [881990976] [2024-11-13 14:29:08,705 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [881990976] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 14:29:08,705 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-13 14:29:08,706 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2024-11-13 14:29:08,706 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1098044349] [2024-11-13 14:29:08,706 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-13 14:29:08,706 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-13 14:29:08,706 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-13 14:29:08,707 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-13 14:29:08,707 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2024-11-13 14:29:08,707 INFO L87 Difference]: Start difference. First operand 3655 states and 4818 transitions. Second operand has 8 states, 8 states have (on average 9.875) internal successors, (79), 8 states have internal predecessors, (79), 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) [2024-11-13 14:29:09,025 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:29:09,025 INFO L93 Difference]: Finished difference Result 3667 states and 4838 transitions. [2024-11-13 14:29:09,026 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-13 14:29:09,026 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 9.875) internal successors, (79), 8 states have internal predecessors, (79), 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 77 [2024-11-13 14:29:09,026 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:29:09,034 INFO L225 Difference]: With dead ends: 3667 [2024-11-13 14:29:09,034 INFO L226 Difference]: Without dead ends: 3667 [2024-11-13 14:29:09,034 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 155 GetRequests, 146 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=44, Invalid=66, Unknown=0, NotChecked=0, Total=110 [2024-11-13 14:29:09,035 INFO L432 NwaCegarLoop]: 2118 mSDtfsCounter, 6 mSDsluCounter, 8451 mSDsCounter, 0 mSdLazyCounter, 73 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 10569 SdHoareTripleChecker+Invalid, 87 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 73 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-13 14:29:09,035 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 10569 Invalid, 87 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 73 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-13 14:29:09,039 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3667 states. [2024-11-13 14:29:09,098 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3667 to 3665. [2024-11-13 14:29:09,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3665 states, 2798 states have (on average 1.7044317369549677) internal successors, (4769), 3634 states have internal predecessors, (4769), 30 states have call successors, (30), 4 states have call predecessors, (30), 5 states have return successors, (34), 27 states have call predecessors, (34), 30 states have call successors, (34) [2024-11-13 14:29:09,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3665 states to 3665 states and 4833 transitions. [2024-11-13 14:29:09,108 INFO L78 Accepts]: Start accepts. Automaton has 3665 states and 4833 transitions. Word has length 77 [2024-11-13 14:29:09,108 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:29:09,109 INFO L471 AbstractCegarLoop]: Abstraction has 3665 states and 4833 transitions. [2024-11-13 14:29:09,109 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.875) internal successors, (79), 8 states have internal predecessors, (79), 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) [2024-11-13 14:29:09,109 INFO L276 IsEmpty]: Start isEmpty. Operand 3665 states and 4833 transitions. [2024-11-13 14:29:09,110 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2024-11-13 14:29:09,110 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:29:09,110 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, 1] [2024-11-13 14:29:09,137 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f0054df-6fb0-4197-a6fa-b5e5f909ee14/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Ended with exit code 0 [2024-11-13 14:29:09,313 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f0054df-6fb0-4197-a6fa-b5e5f909ee14/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:29:09,314 INFO L396 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr82REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 1186 more)] === [2024-11-13 14:29:09,315 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:29:09,315 INFO L85 PathProgramCache]: Analyzing trace with hash 1174089828, now seen corresponding path program 2 times [2024-11-13 14:29:09,315 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-13 14:29:09,316 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [212777450] [2024-11-13 14:29:09,316 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-13 14:29:09,316 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:29:09,316 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f0054df-6fb0-4197-a6fa-b5e5f909ee14/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:29:09,318 INFO L229 MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f0054df-6fb0-4197-a6fa-b5e5f909ee14/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 14:29:09,321 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f0054df-6fb0-4197-a6fa-b5e5f909ee14/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Waiting until timeout for monitored process [2024-11-13 14:29:36,750 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-13 14:29:36,750 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 14:29:36,769 INFO L255 TraceCheckSpWp]: Trace formula consists of 384 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-11-13 14:29:36,772 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 14:29:36,963 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2024-11-13 14:29:36,963 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 [2024-11-13 14:29:36,993 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 [2024-11-13 14:29:37,248 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-13 14:29:37,248 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 44 treesize of output 43 [2024-11-13 14:29:37,309 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 [2024-11-13 14:29:37,341 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-13 14:29:37,341 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 14:29:37,478 INFO L349 Elim1Store]: treesize reduction 7, result has 63.2 percent of original size [2024-11-13 14:29:37,478 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 [2024-11-13 14:29:37,550 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-13 14:29:37,550 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [212777450] [2024-11-13 14:29:37,550 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [212777450] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 14:29:37,550 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1204887960] [2024-11-13 14:29:37,550 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-13 14:29:37,550 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-13 14:29:37,551 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f0054df-6fb0-4197-a6fa-b5e5f909ee14/bin/uautomizer-verify-qhAvR1uOyd/cvc4 [2024-11-13 14:29:37,553 INFO L229 MonitoredProcess]: Starting monitored process 34 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f0054df-6fb0-4197-a6fa-b5e5f909ee14/bin/uautomizer-verify-qhAvR1uOyd/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-13 14:29:37,554 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f0054df-6fb0-4197-a6fa-b5e5f909ee14/bin/uautomizer-verify-qhAvR1uOyd/cvc4 --incremental --print-success --lang smt (34)] Waiting until timeout for monitored process [2024-11-13 14:29:39,739 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-13 14:29:39,740 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 14:29:39,780 INFO L255 TraceCheckSpWp]: Trace formula consists of 384 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-13 14:29:39,782 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 14:29:39,999 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:29:39,999 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 14:29:40,361 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:29:40,362 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1204887960] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 14:29:40,362 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 14:29:40,362 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 8, 8] total 24 [2024-11-13 14:29:40,362 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1373922111] [2024-11-13 14:29:40,362 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 14:29:40,363 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2024-11-13 14:29:40,363 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-13 14:29:40,363 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2024-11-13 14:29:40,364 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=552, Unknown=7, NotChecked=0, Total=650 [2024-11-13 14:29:40,364 INFO L87 Difference]: Start difference. First operand 3665 states and 4833 transitions. Second operand has 24 states, 23 states have (on average 6.260869565217392) internal successors, (144), 23 states have internal predecessors, (144), 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) [2024-11-13 14:30:07,369 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:30:07,370 INFO L93 Difference]: Finished difference Result 3681 states and 4861 transitions. [2024-11-13 14:30:07,370 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2024-11-13 14:30:07,370 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 23 states have (on average 6.260869565217392) internal successors, (144), 23 states have internal predecessors, (144), 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 80 [2024-11-13 14:30:07,370 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:30:07,380 INFO L225 Difference]: With dead ends: 3681 [2024-11-13 14:30:07,381 INFO L226 Difference]: Without dead ends: 3677 [2024-11-13 14:30:07,382 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 268 GetRequests, 217 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 486 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=416, Invalid=2331, Unknown=9, NotChecked=0, Total=2756 [2024-11-13 14:30:07,382 INFO L432 NwaCegarLoop]: 1355 mSDtfsCounter, 1678 mSDsluCounter, 16717 mSDsCounter, 0 mSdLazyCounter, 12366 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 22.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1695 SdHoareTripleChecker+Valid, 18072 SdHoareTripleChecker+Invalid, 12408 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 12366 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 25.5s IncrementalHoareTripleChecker+Time [2024-11-13 14:30:07,383 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1695 Valid, 18072 Invalid, 12408 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [42 Valid, 12366 Invalid, 0 Unknown, 0 Unchecked, 25.5s Time] [2024-11-13 14:30:07,392 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3677 states. [2024-11-13 14:30:07,436 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3677 to 3673. [2024-11-13 14:30:07,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3673 states, 2807 states have (on average 1.7025293908086925) internal successors, (4779), 3642 states have internal predecessors, (4779), 30 states have call successors, (30), 4 states have call predecessors, (30), 5 states have return successors, (34), 27 states have call predecessors, (34), 30 states have call successors, (34) [2024-11-13 14:30:07,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3673 states to 3673 states and 4843 transitions. [2024-11-13 14:30:07,448 INFO L78 Accepts]: Start accepts. Automaton has 3673 states and 4843 transitions. Word has length 80 [2024-11-13 14:30:07,449 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:30:07,449 INFO L471 AbstractCegarLoop]: Abstraction has 3673 states and 4843 transitions. [2024-11-13 14:30:07,449 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 23 states have (on average 6.260869565217392) internal successors, (144), 23 states have internal predecessors, (144), 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) [2024-11-13 14:30:07,449 INFO L276 IsEmpty]: Start isEmpty. Operand 3673 states and 4843 transitions. [2024-11-13 14:30:07,450 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2024-11-13 14:30:07,454 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:30:07,455 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, 1] [2024-11-13 14:30:07,472 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f0054df-6fb0-4197-a6fa-b5e5f909ee14/bin/uautomizer-verify-qhAvR1uOyd/cvc4 --incremental --print-success --lang smt (34)] Ended with exit code 0 [2024-11-13 14:30:07,700 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f0054df-6fb0-4197-a6fa-b5e5f909ee14/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Ended with exit code 0 [2024-11-13 14:30:07,855 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f0054df-6fb0-4197-a6fa-b5e5f909ee14/bin/uautomizer-verify-qhAvR1uOyd/cvc4 --incremental --print-success --lang smt,33 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f0054df-6fb0-4197-a6fa-b5e5f909ee14/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:30:07,855 INFO L396 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr83REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 1186 more)] === [2024-11-13 14:30:07,856 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:30:07,856 INFO L85 PathProgramCache]: Analyzing trace with hash -125888443, now seen corresponding path program 1 times [2024-11-13 14:30:07,856 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-13 14:30:07,857 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [12075191] [2024-11-13 14:30:07,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:30:07,857 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:30:07,857 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f0054df-6fb0-4197-a6fa-b5e5f909ee14/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:30:07,859 INFO L229 MonitoredProcess]: Starting monitored process 35 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f0054df-6fb0-4197-a6fa-b5e5f909ee14/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 14:30:07,860 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f0054df-6fb0-4197-a6fa-b5e5f909ee14/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Waiting until timeout for monitored process [2024-11-13 14:30:08,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:30:08,453 INFO L255 TraceCheckSpWp]: Trace formula consists of 450 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-13 14:30:08,455 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 14:30:08,684 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:30:08,685 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 14:30:09,650 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:30:09,650 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-13 14:30:09,651 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [12075191] [2024-11-13 14:30:09,651 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [12075191] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 14:30:09,651 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-13 14:30:09,651 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 26 [2024-11-13 14:30:09,651 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [916495663] [2024-11-13 14:30:09,651 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-13 14:30:09,652 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2024-11-13 14:30:09,652 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-13 14:30:09,652 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2024-11-13 14:30:09,653 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=193, Invalid=457, Unknown=0, NotChecked=0, Total=650 [2024-11-13 14:30:09,653 INFO L87 Difference]: Start difference. First operand 3673 states and 4843 transitions. Second operand has 26 states, 26 states have (on average 3.730769230769231) internal successors, (97), 26 states have internal predecessors, (97), 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) [2024-11-13 14:30:12,779 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:30:12,779 INFO L93 Difference]: Finished difference Result 3697 states and 4882 transitions. [2024-11-13 14:30:12,780 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2024-11-13 14:30:12,780 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 3.730769230769231) internal successors, (97), 26 states have internal predecessors, (97), 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 86 [2024-11-13 14:30:12,781 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:30:12,787 INFO L225 Difference]: With dead ends: 3697 [2024-11-13 14:30:12,788 INFO L226 Difference]: Without dead ends: 3691 [2024-11-13 14:30:12,788 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 191 GetRequests, 146 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 100 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=728, Invalid=1434, Unknown=0, NotChecked=0, Total=2162 [2024-11-13 14:30:12,789 INFO L432 NwaCegarLoop]: 2118 mSDtfsCounter, 26 mSDsluCounter, 23254 mSDsCounter, 0 mSdLazyCounter, 627 mSolverCounterSat, 55 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 25372 SdHoareTripleChecker+Invalid, 682 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 55 IncrementalHoareTripleChecker+Valid, 627 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2024-11-13 14:30:12,789 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 25372 Invalid, 682 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [55 Valid, 627 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2024-11-13 14:30:12,792 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3691 states. [2024-11-13 14:30:12,829 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3691 to 3691. [2024-11-13 14:30:12,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3691 states, 2825 states have (on average 1.6998230088495576) internal successors, (4802), 3660 states have internal predecessors, (4802), 30 states have call successors, (30), 4 states have call predecessors, (30), 5 states have return successors, (34), 27 states have call predecessors, (34), 30 states have call successors, (34) [2024-11-13 14:30:12,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3691 states to 3691 states and 4866 transitions. [2024-11-13 14:30:12,840 INFO L78 Accepts]: Start accepts. Automaton has 3691 states and 4866 transitions. Word has length 86 [2024-11-13 14:30:12,841 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:30:12,841 INFO L471 AbstractCegarLoop]: Abstraction has 3691 states and 4866 transitions. [2024-11-13 14:30:12,841 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 3.730769230769231) internal successors, (97), 26 states have internal predecessors, (97), 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) [2024-11-13 14:30:12,841 INFO L276 IsEmpty]: Start isEmpty. Operand 3691 states and 4866 transitions. [2024-11-13 14:30:12,842 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2024-11-13 14:30:12,842 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:30:12,843 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, 1] [2024-11-13 14:30:12,877 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f0054df-6fb0-4197-a6fa-b5e5f909ee14/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Ended with exit code 0 [2024-11-13 14:30:13,043 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f0054df-6fb0-4197-a6fa-b5e5f909ee14/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:30:13,043 INFO L396 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr83REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 1186 more)] === [2024-11-13 14:30:13,044 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:30:13,044 INFO L85 PathProgramCache]: Analyzing trace with hash 2033496069, now seen corresponding path program 2 times [2024-11-13 14:30:13,044 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-13 14:30:13,044 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [125058640] [2024-11-13 14:30:13,045 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-13 14:30:13,045 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:30:13,045 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f0054df-6fb0-4197-a6fa-b5e5f909ee14/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:30:13,047 INFO L229 MonitoredProcess]: Starting monitored process 36 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f0054df-6fb0-4197-a6fa-b5e5f909ee14/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 14:30:13,048 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f0054df-6fb0-4197-a6fa-b5e5f909ee14/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Waiting until timeout for monitored process [2024-11-13 14:31:02,530 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-13 14:31:02,530 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 14:31:02,559 INFO L255 TraceCheckSpWp]: Trace formula consists of 582 conjuncts, 64 conjuncts are in the unsatisfiable core [2024-11-13 14:31:02,568 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 14:31:02,741 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 [2024-11-13 14:31:02,756 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2024-11-13 14:31:02,756 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 [2024-11-13 14:31:02,794 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 [2024-11-13 14:31:02,803 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 [2024-11-13 14:31:02,928 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 [2024-11-13 14:31:02,935 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 [2024-11-13 14:31:03,605 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-13 14:31:03,606 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 [2024-11-13 14:31:03,621 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 [2024-11-13 14:31:03,671 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 [2024-11-13 14:31:03,681 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 [2024-11-13 14:31:03,714 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 231 trivial. 0 not checked. [2024-11-13 14:31:03,714 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 14:31:04,320 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse0 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (and (forall ((v_ArrVal_2593 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_2594 (Array (_ BitVec 32) (_ BitVec 32)))) (bvule (bvadd (select (select (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_#t~mem37#1.base| v_ArrVal_2594) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0) (_ bv20 32)) (select |c_#length| (select (select (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem37#1.base| v_ArrVal_2593) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0)))) (forall ((v_ArrVal_2594 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse1 (select (select (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_#t~mem37#1.base| v_ArrVal_2594) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0))) (bvule (bvadd .cse1 (_ bv16 32)) (bvadd .cse1 (_ bv20 32))))))) is different from false [2024-11-13 14:31:04,327 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-13 14:31:04,327 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [125058640] [2024-11-13 14:31:04,327 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [125058640] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 14:31:04,327 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1972326279] [2024-11-13 14:31:04,328 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-13 14:31:04,328 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-13 14:31:04,328 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f0054df-6fb0-4197-a6fa-b5e5f909ee14/bin/uautomizer-verify-qhAvR1uOyd/cvc4 [2024-11-13 14:31:04,332 INFO L229 MonitoredProcess]: Starting monitored process 37 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f0054df-6fb0-4197-a6fa-b5e5f909ee14/bin/uautomizer-verify-qhAvR1uOyd/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-13 14:31:04,335 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f0054df-6fb0-4197-a6fa-b5e5f909ee14/bin/uautomizer-verify-qhAvR1uOyd/cvc4 --incremental --print-success --lang smt (37)] Waiting until timeout for monitored process [2024-11-13 14:31:06,500 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-13 14:31:06,501 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 14:31:06,547 INFO L255 TraceCheckSpWp]: Trace formula consists of 582 conjuncts, 25 conjuncts are in the unsatisfiable core [2024-11-13 14:31:06,550 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 14:31:07,762 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:31:07,763 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 14:31:11,009 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:31:11,009 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1972326279] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 14:31:11,009 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 14:31:11,009 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 26, 26] total 58 [2024-11-13 14:31:11,009 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [536531831] [2024-11-13 14:31:11,009 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 14:31:11,010 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 58 states [2024-11-13 14:31:11,010 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-13 14:31:11,011 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 58 interpolants. [2024-11-13 14:31:11,012 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=699, Invalid=2844, Unknown=1, NotChecked=116, Total=3660 [2024-11-13 14:31:11,012 INFO L87 Difference]: Start difference. First operand 3691 states and 4866 transitions. Second operand has 58 states, 57 states have (on average 3.1578947368421053) internal successors, (180), 58 states have internal predecessors, (180), 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) [2024-11-13 14:32:28,843 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:32:28,843 INFO L93 Difference]: Finished difference Result 3787 states and 5018 transitions. [2024-11-13 14:32:28,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 126 states. [2024-11-13 14:32:28,844 INFO L78 Accepts]: Start accepts. Automaton has has 58 states, 57 states have (on average 3.1578947368421053) internal successors, (180), 58 states have internal predecessors, (180), 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 98 [2024-11-13 14:32:28,844 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:32:28,849 INFO L225 Difference]: With dead ends: 3787 [2024-11-13 14:32:28,849 INFO L226 Difference]: Without dead ends: 3775 [2024-11-13 14:32:28,852 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 392 GetRequests, 237 SyntacticMatches, 1 SemanticMatches, 154 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 4856 ImplicationChecksByTransitivity, 20.9s TimeCoverageRelationStatistics Valid=5256, Invalid=18617, Unknown=1, NotChecked=306, Total=24180 [2024-11-13 14:32:28,852 INFO L432 NwaCegarLoop]: 1381 mSDtfsCounter, 1676 mSDsluCounter, 36569 mSDsCounter, 0 mSdLazyCounter, 26313 mSolverCounterSat, 72 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 53.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1687 SdHoareTripleChecker+Valid, 37950 SdHoareTripleChecker+Invalid, 26385 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.3s SdHoareTripleChecker+Time, 72 IncrementalHoareTripleChecker+Valid, 26313 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 60.2s IncrementalHoareTripleChecker+Time [2024-11-13 14:32:28,853 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1687 Valid, 37950 Invalid, 26385 Unknown, 0 Unchecked, 0.3s Time], IncrementalHoareTripleChecker [72 Valid, 26313 Invalid, 0 Unknown, 0 Unchecked, 60.2s Time] [2024-11-13 14:32:28,855 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3775 states. [2024-11-13 14:32:28,879 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3775 to 3773. [2024-11-13 14:32:28,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3773 states, 2907 states have (on average 1.6838665290677675) internal successors, (4895), 3741 states have internal predecessors, (4895), 30 states have call successors, (30), 5 states have call predecessors, (30), 6 states have return successors, (34), 27 states have call predecessors, (34), 30 states have call successors, (34) [2024-11-13 14:32:28,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3773 states to 3773 states and 4959 transitions. [2024-11-13 14:32:28,889 INFO L78 Accepts]: Start accepts. Automaton has 3773 states and 4959 transitions. Word has length 98 [2024-11-13 14:32:28,889 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:32:28,889 INFO L471 AbstractCegarLoop]: Abstraction has 3773 states and 4959 transitions. [2024-11-13 14:32:28,889 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 58 states, 57 states have (on average 3.1578947368421053) internal successors, (180), 58 states have internal predecessors, (180), 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) [2024-11-13 14:32:28,890 INFO L276 IsEmpty]: Start isEmpty. Operand 3773 states and 4959 transitions. [2024-11-13 14:32:28,891 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2024-11-13 14:32:28,891 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:32:28,891 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] [2024-11-13 14:32:28,905 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f0054df-6fb0-4197-a6fa-b5e5f909ee14/bin/uautomizer-verify-qhAvR1uOyd/cvc4 --incremental --print-success --lang smt (37)] Ended with exit code 0 [2024-11-13 14:32:29,122 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f0054df-6fb0-4197-a6fa-b5e5f909ee14/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Forceful destruction successful, exit code 0 [2024-11-13 14:32:29,292 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 37 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f0054df-6fb0-4197-a6fa-b5e5f909ee14/bin/uautomizer-verify-qhAvR1uOyd/cvc4 --incremental --print-success --lang smt,36 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f0054df-6fb0-4197-a6fa-b5e5f909ee14/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:32:29,292 INFO L396 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr390REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 1186 more)] === [2024-11-13 14:32:29,292 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:32:29,292 INFO L85 PathProgramCache]: Analyzing trace with hash -1712742492, now seen corresponding path program 1 times [2024-11-13 14:32:29,293 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-13 14:32:29,293 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1555430268] [2024-11-13 14:32:29,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:32:29,293 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:32:29,293 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f0054df-6fb0-4197-a6fa-b5e5f909ee14/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:32:29,295 INFO L229 MonitoredProcess]: Starting monitored process 38 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f0054df-6fb0-4197-a6fa-b5e5f909ee14/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 14:32:29,296 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f0054df-6fb0-4197-a6fa-b5e5f909ee14/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Waiting until timeout for monitored process [2024-11-13 14:32:29,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:32:29,987 INFO L255 TraceCheckSpWp]: Trace formula consists of 824 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-13 14:32:29,989 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 14:32:29,993 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-13 14:32:29,994 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-13 14:32:29,994 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-13 14:32:29,996 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 [2024-11-13 14:32:30,250 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-13 14:32:30,250 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 [2024-11-13 14:32:30,267 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 990 trivial. 0 not checked. [2024-11-13 14:32:30,267 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 14:32:30,268 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-13 14:32:30,268 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1555430268] [2024-11-13 14:32:30,268 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1555430268] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 14:32:30,268 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 14:32:30,268 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-13 14:32:30,268 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [310992466] [2024-11-13 14:32:30,268 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 14:32:30,269 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-13 14:32:30,269 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-13 14:32:30,269 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-13 14:32:30,269 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-13 14:32:30,269 INFO L87 Difference]: Start difference. First operand 3773 states and 4959 transitions. Second operand has 5 states, 5 states have (on average 15.0) internal successors, (75), 5 states have internal predecessors, (75), 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) [2024-11-13 14:32:31,011 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:32:31,011 INFO L93 Difference]: Finished difference Result 3930 states and 4849 transitions. [2024-11-13 14:32:31,012 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-13 14:32:31,012 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.0) internal successors, (75), 5 states have internal predecessors, (75), 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 120 [2024-11-13 14:32:31,012 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:32:31,021 INFO L225 Difference]: With dead ends: 3930 [2024-11-13 14:32:31,021 INFO L226 Difference]: Without dead ends: 3930 [2024-11-13 14:32:31,021 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 120 GetRequests, 116 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-11-13 14:32:31,021 INFO L432 NwaCegarLoop]: 2109 mSDtfsCounter, 770 mSDsluCounter, 4875 mSDsCounter, 0 mSdLazyCounter, 164 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 776 SdHoareTripleChecker+Valid, 6984 SdHoareTripleChecker+Invalid, 164 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 164 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-13 14:32:31,022 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [776 Valid, 6984 Invalid, 164 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 164 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-13 14:32:31,025 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3930 states. [2024-11-13 14:32:31,054 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3930 to 3369. [2024-11-13 14:32:31,057 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3369 states, 2504 states have (on average 1.7180511182108626) internal successors, (4302), 3340 states have internal predecessors, (4302), 27 states have call successors, (27), 5 states have call predecessors, (27), 6 states have return successors, (30), 24 states have call predecessors, (30), 27 states have call successors, (30) [2024-11-13 14:32:31,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3369 states to 3369 states and 4359 transitions. [2024-11-13 14:32:31,062 INFO L78 Accepts]: Start accepts. Automaton has 3369 states and 4359 transitions. Word has length 120 [2024-11-13 14:32:31,062 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:32:31,063 INFO L471 AbstractCegarLoop]: Abstraction has 3369 states and 4359 transitions. [2024-11-13 14:32:31,063 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.0) internal successors, (75), 5 states have internal predecessors, (75), 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) [2024-11-13 14:32:31,063 INFO L276 IsEmpty]: Start isEmpty. Operand 3369 states and 4359 transitions. [2024-11-13 14:32:31,063 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2024-11-13 14:32:31,064 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:32:31,064 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] [2024-11-13 14:32:31,093 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f0054df-6fb0-4197-a6fa-b5e5f909ee14/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Ended with exit code 0 [2024-11-13 14:32:31,264 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 38 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f0054df-6fb0-4197-a6fa-b5e5f909ee14/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:32:31,265 INFO L396 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr86REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 1186 more)] === [2024-11-13 14:32:31,265 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:32:31,265 INFO L85 PathProgramCache]: Analyzing trace with hash 901184372, now seen corresponding path program 1 times [2024-11-13 14:32:31,266 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-13 14:32:31,266 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [951965921] [2024-11-13 14:32:31,266 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:32:31,266 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:32:31,266 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f0054df-6fb0-4197-a6fa-b5e5f909ee14/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:32:31,268 INFO L229 MonitoredProcess]: Starting monitored process 39 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f0054df-6fb0-4197-a6fa-b5e5f909ee14/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 14:32:31,270 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f0054df-6fb0-4197-a6fa-b5e5f909ee14/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Waiting until timeout for monitored process [2024-11-13 14:32:31,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:32:31,960 INFO L255 TraceCheckSpWp]: Trace formula consists of 844 conjuncts, 57 conjuncts are in the unsatisfiable core [2024-11-13 14:32:31,969 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 14:32:32,131 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2024-11-13 14:32:32,131 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 [2024-11-13 14:32:32,153 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 [2024-11-13 14:32:32,510 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-13 14:32:32,511 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 [2024-11-13 14:32:32,575 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-13 14:32:32,575 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 [2024-11-13 14:32:32,621 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 [2024-11-13 14:32:32,647 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 946 trivial. 0 not checked. [2024-11-13 14:32:32,647 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 14:32:32,697 INFO L349 Elim1Store]: treesize reduction 7, result has 63.2 percent of original size [2024-11-13 14:32:32,697 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 [2024-11-13 14:32:32,757 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_3623 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (let ((.cse0 (select (select |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (= (select (select (store |c_#memory_$Pointer$#1.base| .cse0 v_ArrVal_3623) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) .cse0)))) is different from false [2024-11-13 14:32:33,198 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_3669 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_3623 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem37#1.base| v_ArrVal_3669)) (.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_3623) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2) .cse1)))) is different from false [2024-11-13 14:32:33,200 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-13 14:32:33,200 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [951965921] [2024-11-13 14:32:33,200 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [951965921] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 14:32:33,201 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [26079597] [2024-11-13 14:32:33,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:32:33,201 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-13 14:32:33,201 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f0054df-6fb0-4197-a6fa-b5e5f909ee14/bin/uautomizer-verify-qhAvR1uOyd/cvc4 [2024-11-13 14:32:33,202 INFO L229 MonitoredProcess]: Starting monitored process 40 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f0054df-6fb0-4197-a6fa-b5e5f909ee14/bin/uautomizer-verify-qhAvR1uOyd/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-13 14:32:33,204 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f0054df-6fb0-4197-a6fa-b5e5f909ee14/bin/uautomizer-verify-qhAvR1uOyd/cvc4 --incremental --print-success --lang smt (40)] Waiting until timeout for monitored process [2024-11-13 14:32:37,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:32:37,030 INFO L255 TraceCheckSpWp]: Trace formula consists of 844 conjuncts, 62 conjuncts are in the unsatisfiable core [2024-11-13 14:32:37,037 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 14:32:37,044 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 [2024-11-13 14:32:37,216 INFO L349 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2024-11-13 14:32:37,216 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 [2024-11-13 14:32:37,283 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 [2024-11-13 14:32:37,467 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 [2024-11-13 14:32:38,766 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-13 14:32:38,767 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 [2024-11-13 14:32:38,937 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-13 14:32:38,937 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 [2024-11-13 14:32:38,974 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 [2024-11-13 14:32:39,048 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 946 trivial. 0 not checked. [2024-11-13 14:32:39,049 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 14:32:39,066 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_4092 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (_ bv1 1) (select |c_#valid| (select (select (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem39#1.base| v_ArrVal_4092) |c_ULTIMATE.start_main_~user~0#1.base|) (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|)))))) is different from false [2024-11-13 14:32:39,075 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_4092 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (_ bv1 1) (select |c_#valid| (let ((.cse0 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (store |c_#memory_$Pointer$#1.base| (select (select |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse0) v_ArrVal_4092) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0)))))) is different from false [2024-11-13 14:32:39,543 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_4138 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_4092 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (_ bv1 1) (select |c_#valid| (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (let ((.cse0 (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem37#1.base| v_ArrVal_4138))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_4092)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))))) is different from false [2024-11-13 14:32:39,547 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [26079597] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 14:32:39,547 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-13 14:32:39,547 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9] total 17 [2024-11-13 14:32:39,547 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2038643315] [2024-11-13 14:32:39,547 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-13 14:32:39,548 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-13 14:32:39,548 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-13 14:32:39,548 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-13 14:32:39,549 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=310, Unknown=13, NotChecked=200, Total=600 [2024-11-13 14:32:39,549 INFO L87 Difference]: Start difference. First operand 3369 states and 4359 transitions. Second operand has 18 states, 15 states have (on average 6.733333333333333) internal successors, (101), 18 states have internal predecessors, (101), 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) [2024-11-13 14:33:04,774 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:33:04,774 INFO L93 Difference]: Finished difference Result 3370 states and 4361 transitions. [2024-11-13 14:33:04,774 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-13 14:33:04,774 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 15 states have (on average 6.733333333333333) internal successors, (101), 18 states have internal predecessors, (101), 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 123 [2024-11-13 14:33:04,775 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:33:04,783 INFO L225 Difference]: With dead ends: 3370 [2024-11-13 14:33:04,783 INFO L226 Difference]: Without dead ends: 3370 [2024-11-13 14:33:04,783 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 259 GetRequests, 234 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 5 IntricatePredicates, 0 DeprecatedPredicates, 87 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=86, Invalid=341, Unknown=13, NotChecked=210, Total=650 [2024-11-13 14:33:04,783 INFO L432 NwaCegarLoop]: 1357 mSDtfsCounter, 1613 mSDsluCounter, 13437 mSDsCounter, 0 mSdLazyCounter, 11029 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 22.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1628 SdHoareTripleChecker+Valid, 14794 SdHoareTripleChecker+Invalid, 11046 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 11029 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 24.9s IncrementalHoareTripleChecker+Time [2024-11-13 14:33:04,784 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1628 Valid, 14794 Invalid, 11046 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [17 Valid, 11029 Invalid, 0 Unknown, 0 Unchecked, 24.9s Time] [2024-11-13 14:33:04,787 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3370 states. [2024-11-13 14:33:04,813 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3370 to 3368. [2024-11-13 14:33:04,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3368 states, 2504 states have (on average 1.7172523961661341) internal successors, (4300), 3339 states have internal predecessors, (4300), 27 states have call successors, (27), 5 states have call predecessors, (27), 6 states have return successors, (30), 24 states have call predecessors, (30), 27 states have call successors, (30) [2024-11-13 14:33:04,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3368 states to 3368 states and 4357 transitions. [2024-11-13 14:33:04,822 INFO L78 Accepts]: Start accepts. Automaton has 3368 states and 4357 transitions. Word has length 123 [2024-11-13 14:33:04,822 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:33:04,822 INFO L471 AbstractCegarLoop]: Abstraction has 3368 states and 4357 transitions. [2024-11-13 14:33:04,822 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 15 states have (on average 6.733333333333333) internal successors, (101), 18 states have internal predecessors, (101), 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) [2024-11-13 14:33:04,823 INFO L276 IsEmpty]: Start isEmpty. Operand 3368 states and 4357 transitions. [2024-11-13 14:33:04,823 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2024-11-13 14:33:04,823 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:33:04,823 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] [2024-11-13 14:33:04,855 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f0054df-6fb0-4197-a6fa-b5e5f909ee14/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Ended with exit code 0 [2024-11-13 14:33:05,045 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f0054df-6fb0-4197-a6fa-b5e5f909ee14/bin/uautomizer-verify-qhAvR1uOyd/cvc4 --incremental --print-success --lang smt (40)] Ended with exit code 0 [2024-11-13 14:33:05,224 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 39 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f0054df-6fb0-4197-a6fa-b5e5f909ee14/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,40 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f0054df-6fb0-4197-a6fa-b5e5f909ee14/bin/uautomizer-verify-qhAvR1uOyd/cvc4 --incremental --print-success --lang smt [2024-11-13 14:33:05,224 INFO L396 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr87REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 1186 more)] === [2024-11-13 14:33:05,225 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:33:05,225 INFO L85 PathProgramCache]: Analyzing trace with hash 901184373, now seen corresponding path program 1 times [2024-11-13 14:33:05,225 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-13 14:33:05,225 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [350167355] [2024-11-13 14:33:05,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:33:05,225 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:33:05,225 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f0054df-6fb0-4197-a6fa-b5e5f909ee14/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:33:05,227 INFO L229 MonitoredProcess]: Starting monitored process 41 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f0054df-6fb0-4197-a6fa-b5e5f909ee14/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 14:33:05,228 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f0054df-6fb0-4197-a6fa-b5e5f909ee14/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Waiting until timeout for monitored process [2024-11-13 14:33:05,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:33:05,945 INFO L255 TraceCheckSpWp]: Trace formula consists of 844 conjuncts, 110 conjuncts are in the unsatisfiable core [2024-11-13 14:33:05,955 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 14:33:06,118 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2024-11-13 14:33:06,119 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 [2024-11-13 14:33:06,127 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 [2024-11-13 14:33:06,158 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 [2024-11-13 14:33:06,167 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 [2024-11-13 14:33:06,306 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 [2024-11-13 14:33:06,312 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 [2024-11-13 14:33:07,169 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-13 14:33:07,169 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 [2024-11-13 14:33:07,181 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 [2024-11-13 14:33:07,286 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-13 14:33:07,286 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 62 treesize of output 57 [2024-11-13 14:33:07,295 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 [2024-11-13 14:33:07,327 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 [2024-11-13 14:33:07,334 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 [2024-11-13 14:33:07,363 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 946 trivial. 0 not checked. [2024-11-13 14:33:07,363 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 14:33:07,663 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$#1.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (and (forall ((v_ArrVal_4607 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (select (store |c_#memory_$Pointer$#1.offset| .cse1 v_ArrVal_4607) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (bvule (bvadd (_ bv4 32) .cse0) (bvadd (_ bv8 32) .cse0)))) (forall ((v_ArrVal_4607 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_4606 (Array (_ BitVec 32) (_ BitVec 32)))) (bvule (bvadd (_ bv8 32) (select (select (store |c_#memory_$Pointer$#1.offset| .cse1 v_ArrVal_4607) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2)) (select |c_#length| (select (select (store |c_#memory_$Pointer$#1.base| .cse1 v_ArrVal_4606) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))))))) is different from false [2024-11-13 14:33:09,140 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (and (forall ((v_ArrVal_4607 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_4699 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_4698 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (select (store (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_#t~mem37#1.base| v_ArrVal_4698) (select (select (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem37#1.base| v_ArrVal_4699) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_4607) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (bvule (bvadd (_ bv4 32) .cse0) (bvadd (_ bv8 32) .cse0)))) (forall ((v_ArrVal_4607 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_4606 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_4699 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_4698 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse3 (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem37#1.base| v_ArrVal_4699))) (let ((.cse2 (select (select .cse3 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (bvule (bvadd (_ bv8 32) (select (select (store (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_#t~mem37#1.base| v_ArrVal_4698) .cse2 v_ArrVal_4607) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)) (select |c_#length| (select (select (store .cse3 .cse2 v_ArrVal_4606) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))))))) is different from false [2024-11-13 14:33:09,147 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-13 14:33:09,147 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [350167355] [2024-11-13 14:33:09,147 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [350167355] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 14:33:09,148 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [921617571] [2024-11-13 14:33:09,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:33:09,148 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-13 14:33:09,148 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f0054df-6fb0-4197-a6fa-b5e5f909ee14/bin/uautomizer-verify-qhAvR1uOyd/cvc4 [2024-11-13 14:33:09,149 INFO L229 MonitoredProcess]: Starting monitored process 42 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f0054df-6fb0-4197-a6fa-b5e5f909ee14/bin/uautomizer-verify-qhAvR1uOyd/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-13 14:33:09,151 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f0054df-6fb0-4197-a6fa-b5e5f909ee14/bin/uautomizer-verify-qhAvR1uOyd/cvc4 --incremental --print-success --lang smt (42)] Waiting until timeout for monitored process [2024-11-13 14:33:12,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:33:12,971 INFO L255 TraceCheckSpWp]: Trace formula consists of 844 conjuncts, 112 conjuncts are in the unsatisfiable core [2024-11-13 14:33:12,982 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 14:33:12,986 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 [2024-11-13 14:33:13,126 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2024-11-13 14:33:13,126 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 [2024-11-13 14:33:13,132 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 [2024-11-13 14:33:13,150 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 [2024-11-13 14:33:13,161 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 [2024-11-13 14:33:13,239 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 [2024-11-13 14:33:13,246 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 [2024-11-13 14:33:14,053 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-13 14:33:14,054 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 [2024-11-13 14:33:14,062 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 [2024-11-13 14:33:14,133 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-13 14:33:14,133 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 [2024-11-13 14:33:14,142 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 [2024-11-13 14:33:14,167 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 [2024-11-13 14:33:14,173 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 [2024-11-13 14:33:14,175 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 946 trivial. 0 not checked. [2024-11-13 14:33:14,175 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 14:33:14,231 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (and (forall ((v_ArrVal_5168 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (select (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_#t~mem39#1.base| v_ArrVal_5168) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (bvule (bvadd (_ bv4 32) .cse0) (bvadd (_ bv8 32) .cse0)))) (forall ((v_ArrVal_5168 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_5169 (Array (_ BitVec 32) (_ BitVec 32)))) (bvule (bvadd (_ bv8 32) (select (select (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_#t~mem39#1.base| v_ArrVal_5168) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)) (select |c_#length| (select (select (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem39#1.base| v_ArrVal_5169) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))))) is different from false [2024-11-13 14:33:14,261 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$#1.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (and (forall ((v_ArrVal_5168 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_5169 (Array (_ BitVec 32) (_ BitVec 32)))) (bvule (bvadd (_ bv8 32) (select (select (store |c_#memory_$Pointer$#1.offset| .cse0 v_ArrVal_5168) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)) (select |c_#length| (select (select (store |c_#memory_$Pointer$#1.base| .cse0 v_ArrVal_5169) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))) (forall ((v_ArrVal_5168 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse2 (select (select (store |c_#memory_$Pointer$#1.offset| .cse0 v_ArrVal_5168) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (bvule (bvadd (_ bv4 32) .cse2) (bvadd (_ bv8 32) .cse2))))))) is different from false [2024-11-13 14:33:15,732 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (and (forall ((v_ArrVal_5260 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_5261 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_5168 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (select (store (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_#t~mem37#1.base| v_ArrVal_5261) (select (select (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem37#1.base| v_ArrVal_5260) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_5168) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (bvule (bvadd (_ bv4 32) .cse0) (bvadd (_ bv8 32) .cse0)))) (forall ((v_ArrVal_5260 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_5261 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_5168 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_5169 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse3 (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem37#1.base| v_ArrVal_5260))) (let ((.cse2 (select (select .cse3 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (bvule (bvadd (_ bv8 32) (select (select (store (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_#t~mem37#1.base| v_ArrVal_5261) .cse2 v_ArrVal_5168) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)) (select |c_#length| (select (select (store .cse3 .cse2 v_ArrVal_5169) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))))))) is different from false [2024-11-13 14:33:15,739 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [921617571] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 14:33:15,739 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-13 14:33:15,739 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 9 [2024-11-13 14:33:15,739 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1406368926] [2024-11-13 14:33:15,739 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-13 14:33:15,740 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-13 14:33:15,740 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-13 14:33:15,740 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-13 14:33:15,740 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=123, Unknown=12, NotChecked=130, Total=306 [2024-11-13 14:33:15,740 INFO L87 Difference]: Start difference. First operand 3368 states and 4357 transitions. Second operand has 10 states, 8 states have (on average 10.375) internal successors, (83), 10 states have internal predecessors, (83), 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) [2024-11-13 14:33:36,054 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:33:36,054 INFO L93 Difference]: Finished difference Result 3367 states and 4355 transitions. [2024-11-13 14:33:36,055 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-13 14:33:36,055 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 8 states have (on average 10.375) internal successors, (83), 10 states have internal predecessors, (83), 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 123 [2024-11-13 14:33:36,055 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:33:36,061 INFO L225 Difference]: With dead ends: 3367 [2024-11-13 14:33:36,061 INFO L226 Difference]: Without dead ends: 3367 [2024-11-13 14:33:36,062 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 263 GetRequests, 239 SyntacticMatches, 3 SemanticMatches, 21 ConstructedPredicates, 5 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=73, Invalid=240, Unknown=13, NotChecked=180, Total=506 [2024-11-13 14:33:36,062 INFO L432 NwaCegarLoop]: 1383 mSDtfsCounter, 1597 mSDsluCounter, 5219 mSDsCounter, 0 mSdLazyCounter, 8687 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 17.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1606 SdHoareTripleChecker+Valid, 6602 SdHoareTripleChecker+Invalid, 8697 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 8687 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 19.9s IncrementalHoareTripleChecker+Time [2024-11-13 14:33:36,062 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1606 Valid, 6602 Invalid, 8697 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [10 Valid, 8687 Invalid, 0 Unknown, 0 Unchecked, 19.9s Time] [2024-11-13 14:33:36,065 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3367 states. [2024-11-13 14:33:36,092 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3367 to 3367. [2024-11-13 14:33:36,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3367 states, 2504 states have (on average 1.7164536741214058) internal successors, (4298), 3338 states have internal predecessors, (4298), 27 states have call successors, (27), 5 states have call predecessors, (27), 6 states have return successors, (30), 24 states have call predecessors, (30), 27 states have call successors, (30) [2024-11-13 14:33:36,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3367 states to 3367 states and 4355 transitions. [2024-11-13 14:33:36,100 INFO L78 Accepts]: Start accepts. Automaton has 3367 states and 4355 transitions. Word has length 123 [2024-11-13 14:33:36,100 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:33:36,100 INFO L471 AbstractCegarLoop]: Abstraction has 3367 states and 4355 transitions. [2024-11-13 14:33:36,101 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 8 states have (on average 10.375) internal successors, (83), 10 states have internal predecessors, (83), 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) [2024-11-13 14:33:36,101 INFO L276 IsEmpty]: Start isEmpty. Operand 3367 states and 4355 transitions. [2024-11-13 14:33:36,101 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2024-11-13 14:33:36,101 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:33:36,101 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] [2024-11-13 14:33:36,122 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f0054df-6fb0-4197-a6fa-b5e5f909ee14/bin/uautomizer-verify-qhAvR1uOyd/cvc4 --incremental --print-success --lang smt (42)] Ended with exit code 0 [2024-11-13 14:33:36,331 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f0054df-6fb0-4197-a6fa-b5e5f909ee14/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Ended with exit code 0 [2024-11-13 14:33:36,502 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 42 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f0054df-6fb0-4197-a6fa-b5e5f909ee14/bin/uautomizer-verify-qhAvR1uOyd/cvc4 --incremental --print-success --lang smt,41 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f0054df-6fb0-4197-a6fa-b5e5f909ee14/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:33:36,502 INFO L396 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr91REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 1186 more)] === [2024-11-13 14:33:36,502 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:33:36,503 INFO L85 PathProgramCache]: Analyzing trace with hash -656595444, now seen corresponding path program 1 times [2024-11-13 14:33:36,503 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-13 14:33:36,503 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [255915174] [2024-11-13 14:33:36,503 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:33:36,503 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:33:36,503 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f0054df-6fb0-4197-a6fa-b5e5f909ee14/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:33:36,505 INFO L229 MonitoredProcess]: Starting monitored process 43 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f0054df-6fb0-4197-a6fa-b5e5f909ee14/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 14:33:36,506 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f0054df-6fb0-4197-a6fa-b5e5f909ee14/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Waiting until timeout for monitored process [2024-11-13 14:33:37,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:33:37,301 INFO L255 TraceCheckSpWp]: Trace formula consists of 873 conjuncts, 113 conjuncts are in the unsatisfiable core [2024-11-13 14:33:37,311 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 14:33:37,420 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 [2024-11-13 14:33:37,433 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2024-11-13 14:33:37,434 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 [2024-11-13 14:33:37,457 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 [2024-11-13 14:33:37,465 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 [2024-11-13 14:33:37,563 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 [2024-11-13 14:33:37,569 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 [2024-11-13 14:33:38,347 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-13 14:33:38,347 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 [2024-11-13 14:33:38,355 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 [2024-11-13 14:33:38,473 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-13 14:33:38,473 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 [2024-11-13 14:33:38,483 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 [2024-11-13 14:33:38,645 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-13 14:33:38,645 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 [2024-11-13 14:33:38,663 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 [2024-11-13 14:33:38,691 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 [2024-11-13 14:33:38,695 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 [2024-11-13 14:33:38,725 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 946 trivial. 0 not checked. [2024-11-13 14:33:38,725 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 14:33:38,889 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (and (forall ((v_ArrVal_5747 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (select (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_#t~mem40#1.base| v_ArrVal_5747) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (bvule (bvadd (_ bv8 32) .cse0) (bvadd (_ bv12 32) .cse0)))) (forall ((v_ArrVal_5746 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_5747 (Array (_ BitVec 32) (_ BitVec 32)))) (bvule (bvadd (_ bv12 32) (select (select (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_#t~mem40#1.base| v_ArrVal_5747) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)) (select |c_#length| (select (select (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem40#1.base| v_ArrVal_5746) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))))) is different from false [2024-11-13 14:33:38,923 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$#1.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (and (forall ((v_ArrVal_5746 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_5747 (Array (_ BitVec 32) (_ BitVec 32)))) (bvule (bvadd (_ bv12 32) (select (select (store |c_#memory_$Pointer$#1.offset| .cse0 v_ArrVal_5747) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)) (select |c_#length| (select (select (store |c_#memory_$Pointer$#1.base| .cse0 v_ArrVal_5746) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))) (forall ((v_ArrVal_5747 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse2 (select (select (store |c_#memory_$Pointer$#1.offset| .cse0 v_ArrVal_5747) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (bvule (bvadd (_ bv8 32) .cse2) (bvadd (_ bv12 32) .cse2))))))) is different from false [2024-11-13 14:33:39,110 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (and (forall ((v_ArrVal_5744 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_5745 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_5746 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_5747 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse2 (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem39#1.base| v_ArrVal_5745))) (let ((.cse0 (select (select .cse2 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (bvule (bvadd (select (select (store (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_#t~mem39#1.base| v_ArrVal_5744) .cse0 v_ArrVal_5747) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) (_ bv12 32)) (select |c_#length| (select (select (store .cse2 .cse0 v_ArrVal_5746) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))))) (forall ((v_ArrVal_5744 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_5745 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_5747 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse3 (select (select (store (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_#t~mem39#1.base| v_ArrVal_5744) (select (select (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem39#1.base| v_ArrVal_5745) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_5747) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (bvule (bvadd .cse3 (_ bv8 32)) (bvadd .cse3 (_ bv12 32))))))) is different from false [2024-11-13 14:33:41,250 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse2 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (and (forall ((v_ArrVal_5838 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_5839 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_5744 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_5745 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_5746 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_5747 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse4 (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem37#1.base| v_ArrVal_5839))) (let ((.cse0 (select (select .cse4 |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (let ((.cse3 (store .cse4 .cse0 v_ArrVal_5745))) (let ((.cse1 (select (select .cse3 |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (bvule (bvadd (_ bv12 32) (select (select (store (store (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_#t~mem37#1.base| v_ArrVal_5838) .cse0 v_ArrVal_5744) .cse1 v_ArrVal_5747) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2)) (select |c_#length| (select (select (store .cse3 .cse1 v_ArrVal_5746) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2)))))))) (forall ((v_ArrVal_5838 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_5839 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_5744 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_5745 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_5747 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse5 (select (select (let ((.cse7 (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem37#1.base| v_ArrVal_5839))) (let ((.cse6 (select (select .cse7 |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (store (store (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_#t~mem37#1.base| v_ArrVal_5838) .cse6 v_ArrVal_5744) (select (select (store .cse7 .cse6 v_ArrVal_5745) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2) v_ArrVal_5747))) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (bvule (bvadd (_ bv8 32) .cse5) (bvadd (_ bv12 32) .cse5)))))) is different from false [2024-11-13 14:33:41,263 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-13 14:33:41,263 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [255915174] [2024-11-13 14:33:41,263 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [255915174] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 14:33:41,263 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1470326473] [2024-11-13 14:33:41,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:33:41,264 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-13 14:33:41,264 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f0054df-6fb0-4197-a6fa-b5e5f909ee14/bin/uautomizer-verify-qhAvR1uOyd/cvc4 [2024-11-13 14:33:41,266 INFO L229 MonitoredProcess]: Starting monitored process 44 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f0054df-6fb0-4197-a6fa-b5e5f909ee14/bin/uautomizer-verify-qhAvR1uOyd/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-13 14:33:41,268 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f0054df-6fb0-4197-a6fa-b5e5f909ee14/bin/uautomizer-verify-qhAvR1uOyd/cvc4 --incremental --print-success --lang smt (44)] Waiting until timeout for monitored process [2024-11-13 14:33:55,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:33:55,774 INFO L255 TraceCheckSpWp]: Trace formula consists of 873 conjuncts, 116 conjuncts are in the unsatisfiable core [2024-11-13 14:33:55,786 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 14:33:55,792 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 [2024-11-13 14:33:56,123 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2024-11-13 14:33:56,123 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 [2024-11-13 14:33:56,140 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 [2024-11-13 14:33:56,161 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 [2024-11-13 14:33:56,169 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 [2024-11-13 14:33:56,310 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 [2024-11-13 14:33:56,318 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 [2024-11-13 14:33:57,639 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-13 14:33:57,639 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 [2024-11-13 14:33:57,654 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 [2024-11-13 14:33:57,819 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-13 14:33:57,819 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 [2024-11-13 14:33:57,834 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 [2024-11-13 14:33:57,940 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-13 14:33:57,940 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 [2024-11-13 14:33:57,956 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 [2024-11-13 14:33:58,006 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 [2024-11-13 14:33:58,013 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 [2024-11-13 14:33:58,021 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 946 trivial. 0 not checked. [2024-11-13 14:33:58,021 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 14:33:58,111 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (and (forall ((v_ArrVal_6326 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (select (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_#t~mem40#1.base| v_ArrVal_6326) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (bvule (bvadd (_ bv8 32) .cse0) (bvadd (_ bv12 32) .cse0)))) (forall ((v_ArrVal_6325 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_6326 (Array (_ BitVec 32) (_ BitVec 32)))) (bvule (bvadd (_ bv12 32) (select (select (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_#t~mem40#1.base| v_ArrVal_6326) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)) (select |c_#length| (select (select (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem40#1.base| v_ArrVal_6325) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))))) is different from false [2024-11-13 14:33:58,150 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$#1.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (and (forall ((v_ArrVal_6325 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_6326 (Array (_ BitVec 32) (_ BitVec 32)))) (bvule (bvadd (_ bv12 32) (select (select (store |c_#memory_$Pointer$#1.offset| .cse0 v_ArrVal_6326) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)) (select |c_#length| (select (select (store |c_#memory_$Pointer$#1.base| .cse0 v_ArrVal_6325) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))) (forall ((v_ArrVal_6326 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse2 (select (select (store |c_#memory_$Pointer$#1.offset| .cse0 v_ArrVal_6326) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (bvule (bvadd (_ bv8 32) .cse2) (bvadd (_ bv12 32) .cse2))))))) is different from false [2024-11-13 14:33:58,262 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (and (forall ((v_ArrVal_6323 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_6324 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_6325 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_6326 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse2 (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem39#1.base| v_ArrVal_6324))) (let ((.cse0 (select (select .cse2 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (bvule (bvadd (_ bv12 32) (select (select (store (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_#t~mem39#1.base| v_ArrVal_6323) .cse0 v_ArrVal_6326) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)) (select |c_#length| (select (select (store .cse2 .cse0 v_ArrVal_6325) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))))) (forall ((v_ArrVal_6323 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_6324 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_6326 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse3 (select (select (store (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_#t~mem39#1.base| v_ArrVal_6323) (select (select (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem39#1.base| v_ArrVal_6324) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_6326) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (bvule (bvadd (_ bv8 32) .cse3) (bvadd (_ bv12 32) .cse3)))))) is different from false [2024-11-13 14:33:58,336 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$#1.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (and (forall ((v_ArrVal_6323 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_6324 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_6325 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_6326 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse3 (store |c_#memory_$Pointer$#1.base| .cse0 v_ArrVal_6324))) (let ((.cse1 (select (select .cse3 |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (bvule (bvadd (_ bv12 32) (select (select (store (store |c_#memory_$Pointer$#1.offset| .cse0 v_ArrVal_6323) .cse1 v_ArrVal_6326) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2)) (select |c_#length| (select (select (store .cse3 .cse1 v_ArrVal_6325) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2)))))) (forall ((v_ArrVal_6323 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_6324 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_6326 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse4 (select (select (store (store |c_#memory_$Pointer$#1.offset| .cse0 v_ArrVal_6323) (select (select (store |c_#memory_$Pointer$#1.base| .cse0 v_ArrVal_6324) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2) v_ArrVal_6326) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (bvule (bvadd (_ bv8 32) .cse4) (bvadd (_ bv12 32) .cse4))))))) is different from false [2024-11-13 14:34:00,622 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse3 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (and (forall ((v_ArrVal_6417 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_6418 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_6323 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_6324 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_6326 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (select (let ((.cse2 (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem37#1.base| v_ArrVal_6418))) (let ((.cse1 (select (select .cse2 |c_ULTIMATE.start_main_~user~0#1.base|) .cse3))) (store (store (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_#t~mem37#1.base| v_ArrVal_6417) .cse1 v_ArrVal_6323) (select (select (store .cse2 .cse1 v_ArrVal_6324) |c_ULTIMATE.start_main_~user~0#1.base|) .cse3) v_ArrVal_6326))) |c_ULTIMATE.start_main_~user~0#1.base|) .cse3))) (bvule (bvadd (_ bv8 32) .cse0) (bvadd (_ bv12 32) .cse0)))) (forall ((v_ArrVal_6417 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_6418 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_6323 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_6324 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_6325 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_6326 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse7 (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem37#1.base| v_ArrVal_6418))) (let ((.cse4 (select (select .cse7 |c_ULTIMATE.start_main_~user~0#1.base|) .cse3))) (let ((.cse6 (store .cse7 .cse4 v_ArrVal_6324))) (let ((.cse5 (select (select .cse6 |c_ULTIMATE.start_main_~user~0#1.base|) .cse3))) (bvule (bvadd (_ bv12 32) (select (select (store (store (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_#t~mem37#1.base| v_ArrVal_6417) .cse4 v_ArrVal_6323) .cse5 v_ArrVal_6326) |c_ULTIMATE.start_main_~user~0#1.base|) .cse3)) (select |c_#length| (select (select (store .cse6 .cse5 v_ArrVal_6325) |c_ULTIMATE.start_main_~user~0#1.base|) .cse3)))))))))) is different from false [2024-11-13 14:34:00,636 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1470326473] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 14:34:00,636 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-13 14:34:00,636 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 10 [2024-11-13 14:34:00,636 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [819464025] [2024-11-13 14:34:00,637 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-13 14:34:00,637 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-13 14:34:00,637 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-13 14:34:00,637 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-13 14:34:00,638 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=151, Unknown=11, NotChecked=288, Total=506 [2024-11-13 14:34:00,638 INFO L87 Difference]: Start difference. First operand 3367 states and 4355 transitions. Second operand has 11 states, 9 states have (on average 9.555555555555555) internal successors, (86), 11 states have internal predecessors, (86), 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) [2024-11-13 14:34:28,436 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:34:28,436 INFO L93 Difference]: Finished difference Result 3366 states and 4353 transitions. [2024-11-13 14:34:28,437 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-13 14:34:28,437 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 9 states have (on average 9.555555555555555) internal successors, (86), 11 states have internal predecessors, (86), 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 126 [2024-11-13 14:34:28,437 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:34:28,442 INFO L225 Difference]: With dead ends: 3366 [2024-11-13 14:34:28,442 INFO L226 Difference]: Without dead ends: 3366 [2024-11-13 14:34:28,442 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 276 GetRequests, 246 SyntacticMatches, 3 SemanticMatches, 27 ConstructedPredicates, 9 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=99, Invalid=306, Unknown=11, NotChecked=396, Total=812 [2024-11-13 14:34:28,443 INFO L432 NwaCegarLoop]: 1382 mSDtfsCounter, 1597 mSDsluCounter, 3574 mSDsCounter, 0 mSdLazyCounter, 6119 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 25.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1606 SdHoareTripleChecker+Valid, 4956 SdHoareTripleChecker+Invalid, 6129 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 6119 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 27.1s IncrementalHoareTripleChecker+Time [2024-11-13 14:34:28,443 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1606 Valid, 4956 Invalid, 6129 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [10 Valid, 6119 Invalid, 0 Unknown, 0 Unchecked, 27.1s Time] [2024-11-13 14:34:28,446 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3366 states. [2024-11-13 14:34:28,468 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3366 to 3366. [2024-11-13 14:34:28,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3366 states, 2504 states have (on average 1.7156549520766773) internal successors, (4296), 3337 states have internal predecessors, (4296), 27 states have call successors, (27), 5 states have call predecessors, (27), 6 states have return successors, (30), 24 states have call predecessors, (30), 27 states have call successors, (30) [2024-11-13 14:34:28,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3366 states to 3366 states and 4353 transitions. [2024-11-13 14:34:28,473 INFO L78 Accepts]: Start accepts. Automaton has 3366 states and 4353 transitions. Word has length 126 [2024-11-13 14:34:28,473 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:34:28,474 INFO L471 AbstractCegarLoop]: Abstraction has 3366 states and 4353 transitions. [2024-11-13 14:34:28,474 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 9 states have (on average 9.555555555555555) internal successors, (86), 11 states have internal predecessors, (86), 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) [2024-11-13 14:34:28,474 INFO L276 IsEmpty]: Start isEmpty. Operand 3366 states and 4353 transitions. [2024-11-13 14:34:28,474 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2024-11-13 14:34:28,474 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:34:28,474 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] [2024-11-13 14:34:28,499 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f0054df-6fb0-4197-a6fa-b5e5f909ee14/bin/uautomizer-verify-qhAvR1uOyd/cvc4 --incremental --print-success --lang smt (44)] Forceful destruction successful, exit code 0 [2024-11-13 14:34:28,696 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f0054df-6fb0-4197-a6fa-b5e5f909ee14/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Ended with exit code 0 [2024-11-13 14:34:28,875 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 44 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f0054df-6fb0-4197-a6fa-b5e5f909ee14/bin/uautomizer-verify-qhAvR1uOyd/cvc4 --incremental --print-success --lang smt,43 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f0054df-6fb0-4197-a6fa-b5e5f909ee14/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:34:28,875 INFO L396 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr90REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 1186 more)] === [2024-11-13 14:34:28,875 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:34:28,875 INFO L85 PathProgramCache]: Analyzing trace with hash -656595445, now seen corresponding path program 1 times [2024-11-13 14:34:28,876 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-13 14:34:28,876 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1984278216] [2024-11-13 14:34:28,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:34:28,876 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:34:28,876 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f0054df-6fb0-4197-a6fa-b5e5f909ee14/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:34:28,877 INFO L229 MonitoredProcess]: Starting monitored process 45 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f0054df-6fb0-4197-a6fa-b5e5f909ee14/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 14:34:28,879 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f0054df-6fb0-4197-a6fa-b5e5f909ee14/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (45)] Waiting until timeout for monitored process [2024-11-13 14:34:29,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:34:29,800 INFO L255 TraceCheckSpWp]: Trace formula consists of 873 conjuncts, 60 conjuncts are in the unsatisfiable core [2024-11-13 14:34:29,807 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 14:34:29,813 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 [2024-11-13 14:34:30,179 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2024-11-13 14:34:30,180 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 [2024-11-13 14:34:30,220 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 [2024-11-13 14:34:30,944 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-13 14:34:30,944 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 [2024-11-13 14:34:31,074 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-13 14:34:31,074 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 [2024-11-13 14:34:31,329 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-13 14:34:31,329 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 [2024-11-13 14:34:31,362 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 [2024-11-13 14:34:31,417 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 946 trivial. 0 not checked. [2024-11-13 14:34:31,417 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 14:34:31,505 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_6856 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (_ bv1 1) (select |c_#valid| (select (select (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem40#1.base| v_ArrVal_6856) |c_ULTIMATE.start_main_~user~0#1.base|) (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|)))))) is different from false [2024-11-13 14:34:31,524 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_6856 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (_ bv1 1) (select |c_#valid| (let ((.cse0 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (store |c_#memory_$Pointer$#1.base| (select (select |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse0) v_ArrVal_6856) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0)))))) is different from false [2024-11-13 14:34:31,570 INFO L349 Elim1Store]: treesize reduction 7, result has 77.4 percent of original size [2024-11-13 14:34:31,570 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 37 treesize of output 36 [2024-11-13 14:34:31,584 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_6855 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_6856 (Array (_ BitVec 32) (_ BitVec 32)))) (= (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (let ((.cse0 (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem39#1.base| v_ArrVal_6855))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_6856)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)) |c_ULTIMATE.start_main_#t~mem39#1.base|)) is different from false [2024-11-13 14:34:31,607 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_6855 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_6856 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (let ((.cse2 (select (select |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (= (select (select (let ((.cse0 (store |c_#memory_$Pointer$#1.base| .cse2 v_ArrVal_6855))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_6856)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) .cse2)))) is different from false [2024-11-13 14:34:32,237 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_6855 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_6856 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_6902 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse2 (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem37#1.base| v_ArrVal_6902)) (.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (let ((.cse3 (select (select .cse2 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (= (select (select (let ((.cse0 (store .cse2 .cse3 v_ArrVal_6855))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_6856)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) .cse3)))) is different from false [2024-11-13 14:34:32,241 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-13 14:34:32,241 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1984278216] [2024-11-13 14:34:32,241 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1984278216] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 14:34:32,241 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [796264239] [2024-11-13 14:34:32,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:34:32,241 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-13 14:34:32,241 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f0054df-6fb0-4197-a6fa-b5e5f909ee14/bin/uautomizer-verify-qhAvR1uOyd/cvc4 [2024-11-13 14:34:32,243 INFO L229 MonitoredProcess]: Starting monitored process 46 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f0054df-6fb0-4197-a6fa-b5e5f909ee14/bin/uautomizer-verify-qhAvR1uOyd/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-13 14:34:32,244 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f0054df-6fb0-4197-a6fa-b5e5f909ee14/bin/uautomizer-verify-qhAvR1uOyd/cvc4 --incremental --print-success --lang smt (46)] Waiting until timeout for monitored process [2024-11-13 14:34:45,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:34:45,417 INFO L255 TraceCheckSpWp]: Trace formula consists of 873 conjuncts, 64 conjuncts are in the unsatisfiable core [2024-11-13 14:34:45,425 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 14:34:45,438 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 [2024-11-13 14:34:45,840 INFO L349 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2024-11-13 14:34:45,840 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 [2024-11-13 14:34:45,958 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 [2024-11-13 14:34:46,268 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 [2024-11-13 14:34:48,270 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-13 14:34:48,271 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 [2024-11-13 14:34:48,598 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-13 14:34:48,599 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 [2024-11-13 14:34:48,818 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-13 14:34:48,818 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 [2024-11-13 14:34:48,870 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 [2024-11-13 14:34:48,999 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 946 trivial. 0 not checked. [2024-11-13 14:34:48,999 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 14:34:49,034 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_7341 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (_ bv1 1) (select |c_#valid| (select (select (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem40#1.base| v_ArrVal_7341) |c_ULTIMATE.start_main_~user~0#1.base|) (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|)))))) is different from false [2024-11-13 14:34:49,051 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_7341 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (_ bv1 1) (select |c_#valid| (let ((.cse0 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (store |c_#memory_$Pointer$#1.base| (select (select |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse0) v_ArrVal_7341) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0)))))) is different from false [2024-11-13 14:34:49,079 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_7340 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7341 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (_ bv1 1) (select |c_#valid| (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (let ((.cse0 (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem39#1.base| v_ArrVal_7340))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_7341)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))))) is different from false [2024-11-13 14:34:49,099 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_7340 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7341 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (_ bv1 1) (select |c_#valid| (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (let ((.cse0 (store |c_#memory_$Pointer$#1.base| (select (select |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_7340))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_7341)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))))) is different from false [2024-11-13 14:34:49,829 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_7340 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7341 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7387 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (_ bv1 1) (select |c_#valid| (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (let ((.cse0 (let ((.cse2 (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem37#1.base| v_ArrVal_7387))) (store .cse2 (select (select .cse2 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_7340)))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_7341)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))))) is different from false [2024-11-13 14:34:49,835 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [796264239] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 14:34:49,835 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-13 14:34:49,835 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10] total 19 [2024-11-13 14:34:49,835 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1304124919] [2024-11-13 14:34:49,835 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-13 14:34:49,836 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-11-13 14:34:49,836 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-13 14:34:49,836 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-11-13 14:34:49,836 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=96, Invalid=354, Unknown=10, NotChecked=470, Total=930 [2024-11-13 14:34:49,836 INFO L87 Difference]: Start difference. First operand 3366 states and 4353 transitions. Second operand has 20 states, 17 states have (on average 6.0588235294117645) internal successors, (103), 20 states have internal predecessors, (103), 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) [2024-11-13 14:35:35,388 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:35:35,388 INFO L93 Difference]: Finished difference Result 3367 states and 4355 transitions. [2024-11-13 14:35:35,389 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-13 14:35:35,389 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 17 states have (on average 6.0588235294117645) internal successors, (103), 20 states have internal predecessors, (103), 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 126 [2024-11-13 14:35:35,389 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:35:35,391 INFO L225 Difference]: With dead ends: 3367 [2024-11-13 14:35:35,392 INFO L226 Difference]: Without dead ends: 3367 [2024-11-13 14:35:35,392 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 271 GetRequests, 240 SyntacticMatches, 1 SemanticMatches, 30 ConstructedPredicates, 10 IntricatePredicates, 0 DeprecatedPredicates, 95 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=105, Invalid=387, Unknown=10, NotChecked=490, Total=992 [2024-11-13 14:35:35,392 INFO L432 NwaCegarLoop]: 1356 mSDtfsCounter, 1622 mSDsluCounter, 13285 mSDsCounter, 0 mSdLazyCounter, 11266 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 41.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1637 SdHoareTripleChecker+Valid, 14641 SdHoareTripleChecker+Invalid, 11301 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 11266 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 45.1s IncrementalHoareTripleChecker+Time [2024-11-13 14:35:35,392 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1637 Valid, 14641 Invalid, 11301 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [35 Valid, 11266 Invalid, 0 Unknown, 0 Unchecked, 45.1s Time] [2024-11-13 14:35:35,394 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3367 states. [2024-11-13 14:35:35,415 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3367 to 3365. [2024-11-13 14:35:35,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3365 states, 2504 states have (on average 1.714856230031949) internal successors, (4294), 3336 states have internal predecessors, (4294), 27 states have call successors, (27), 5 states have call predecessors, (27), 6 states have return successors, (30), 24 states have call predecessors, (30), 27 states have call successors, (30) [2024-11-13 14:35:35,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3365 states to 3365 states and 4351 transitions. [2024-11-13 14:35:35,421 INFO L78 Accepts]: Start accepts. Automaton has 3365 states and 4351 transitions. Word has length 126 [2024-11-13 14:35:35,421 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:35:35,421 INFO L471 AbstractCegarLoop]: Abstraction has 3365 states and 4351 transitions. [2024-11-13 14:35:35,421 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 17 states have (on average 6.0588235294117645) internal successors, (103), 20 states have internal predecessors, (103), 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) [2024-11-13 14:35:35,421 INFO L276 IsEmpty]: Start isEmpty. Operand 3365 states and 4351 transitions. [2024-11-13 14:35:35,421 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2024-11-13 14:35:35,421 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:35:35,422 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, 1] [2024-11-13 14:35:35,447 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f0054df-6fb0-4197-a6fa-b5e5f909ee14/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (45)] Ended with exit code 0 [2024-11-13 14:35:35,645 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f0054df-6fb0-4197-a6fa-b5e5f909ee14/bin/uautomizer-verify-qhAvR1uOyd/cvc4 --incremental --print-success --lang smt (46)] Forceful destruction successful, exit code 0 [2024-11-13 14:35:35,822 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 45 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f0054df-6fb0-4197-a6fa-b5e5f909ee14/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,46 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f0054df-6fb0-4197-a6fa-b5e5f909ee14/bin/uautomizer-verify-qhAvR1uOyd/cvc4 --incremental --print-success --lang smt [2024-11-13 14:35:35,822 INFO L396 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr94REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 1186 more)] === [2024-11-13 14:35:35,822 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:35:35,823 INFO L85 PathProgramCache]: Analyzing trace with hash -1353483461, now seen corresponding path program 1 times [2024-11-13 14:35:35,823 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-13 14:35:35,823 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [630703728] [2024-11-13 14:35:35,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:35:35,823 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:35:35,823 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f0054df-6fb0-4197-a6fa-b5e5f909ee14/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:35:35,825 INFO L229 MonitoredProcess]: Starting monitored process 47 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f0054df-6fb0-4197-a6fa-b5e5f909ee14/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 14:35:35,826 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f0054df-6fb0-4197-a6fa-b5e5f909ee14/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (47)] Waiting until timeout for monitored process [2024-11-13 14:35:36,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:35:36,751 INFO L255 TraceCheckSpWp]: Trace formula consists of 902 conjuncts, 62 conjuncts are in the unsatisfiable core [2024-11-13 14:35:36,761 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 14:35:36,768 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 [2024-11-13 14:35:37,193 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2024-11-13 14:35:37,194 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 [2024-11-13 14:35:37,237 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 [2024-11-13 14:35:38,469 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-13 14:35:38,469 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 [2024-11-13 14:35:38,744 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-13 14:35:38,745 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 [2024-11-13 14:35:38,934 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-13 14:35:38,934 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 [2024-11-13 14:35:39,133 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-13 14:35:39,134 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 [2024-11-13 14:35:39,174 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 [2024-11-13 14:35:39,246 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 946 trivial. 0 not checked. [2024-11-13 14:35:39,246 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 14:35:39,492 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_7841 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (_ bv1 1) (select |c_#valid| (let ((.cse0 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (store |c_#memory_$Pointer$#1.base| (select (select |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse0) v_ArrVal_7841) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0)))))) is different from false [2024-11-13 14:35:39,523 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_7841 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7840 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (_ bv1 1) (select |c_#valid| (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (let ((.cse0 (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem40#1.base| v_ArrVal_7840))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_7841)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))))) is different from false [2024-11-13 14:35:39,544 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_7841 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7840 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (_ bv1 1) (select |c_#valid| (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (let ((.cse0 (store |c_#memory_$Pointer$#1.base| (select (select |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_7840))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_7841)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))))) is different from false [2024-11-13 14:35:39,575 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_7839 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7841 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7840 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (_ bv1 1) (select |c_#valid| (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (let ((.cse0 (let ((.cse2 (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem39#1.base| v_ArrVal_7839))) (store .cse2 (select (select .cse2 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_7840)))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_7841)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))))) is different from false [2024-11-13 14:35:39,600 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_7839 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7841 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7840 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (_ bv1 1) (select |c_#valid| (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (let ((.cse0 (let ((.cse2 (store |c_#memory_$Pointer$#1.base| (select (select |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_7839))) (store .cse2 (select (select .cse2 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_7840)))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_7841)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))))) is different from false [2024-11-13 14:35:40,357 INFO L349 Elim1Store]: treesize reduction 7, result has 93.2 percent of original size [2024-11-13 14:35:40,357 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 109 treesize of output 108 [2024-11-13 14:35:40,378 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_7839 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7887 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7841 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7840 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_ULTIMATE.start_main_#t~mem37#1.base| (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (let ((.cse0 (let ((.cse2 (let ((.cse3 (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem37#1.base| v_ArrVal_7887))) (store .cse3 (select (select .cse3 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_7839)))) (store .cse2 (select (select .cse2 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_7840)))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_7841)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))) is different from false [2024-11-13 14:35:40,383 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-13 14:35:40,383 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [630703728] [2024-11-13 14:35:40,383 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [630703728] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 14:35:40,383 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [826672889] [2024-11-13 14:35:40,384 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:35:40,384 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-13 14:35:40,384 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f0054df-6fb0-4197-a6fa-b5e5f909ee14/bin/uautomizer-verify-qhAvR1uOyd/cvc4 [2024-11-13 14:35:40,386 INFO L229 MonitoredProcess]: Starting monitored process 48 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f0054df-6fb0-4197-a6fa-b5e5f909ee14/bin/uautomizer-verify-qhAvR1uOyd/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-13 14:35:40,387 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f0054df-6fb0-4197-a6fa-b5e5f909ee14/bin/uautomizer-verify-qhAvR1uOyd/cvc4 --incremental --print-success --lang smt (48)] Waiting until timeout for monitored process [2024-11-13 14:35:57,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:35:57,992 INFO L255 TraceCheckSpWp]: Trace formula consists of 902 conjuncts, 66 conjuncts are in the unsatisfiable core [2024-11-13 14:35:58,001 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 14:35:58,012 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 [2024-11-13 14:35:58,433 INFO L349 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2024-11-13 14:35:58,433 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 [2024-11-13 14:35:58,574 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 [2024-11-13 14:35:58,912 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 [2024-11-13 14:36:00,930 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-13 14:36:00,930 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 [2024-11-13 14:36:01,283 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-13 14:36:01,283 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 44 treesize of output 43 [2024-11-13 14:36:01,543 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-13 14:36:01,543 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 [2024-11-13 14:36:01,798 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-13 14:36:01,798 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 [2024-11-13 14:36:01,850 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 [2024-11-13 14:36:01,984 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 946 trivial. 0 not checked. [2024-11-13 14:36:01,984 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 14:36:02,151 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_8341 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7841 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (_ bv1 1) (select |c_#valid| (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (let ((.cse0 (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem40#1.base| v_ArrVal_8341))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_7841)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))))) is different from false [2024-11-13 14:36:02,169 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_8341 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7841 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (_ bv1 1) (select |c_#valid| (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (let ((.cse0 (store |c_#memory_$Pointer$#1.base| (select (select |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_8341))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_7841)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))))) is different from false [2024-11-13 14:36:02,198 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_8341 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8340 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7841 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (_ bv1 1) (select |c_#valid| (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (let ((.cse0 (let ((.cse2 (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem39#1.base| v_ArrVal_8340))) (store .cse2 (select (select .cse2 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_8341)))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_7841)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))))) is different from false [2024-11-13 14:36:02,225 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_8341 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8340 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7841 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (_ bv1 1) (select |c_#valid| (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (let ((.cse0 (let ((.cse2 (store |c_#memory_$Pointer$#1.base| (select (select |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_8340))) (store .cse2 (select (select .cse2 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_8341)))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_7841)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))))) is different from false [2024-11-13 14:36:02,975 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_8341 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8340 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7841 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8388 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (_ bv1 1) (select |c_#valid| (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (let ((.cse0 (let ((.cse2 (let ((.cse3 (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem37#1.base| v_ArrVal_8388))) (store .cse3 (select (select .cse3 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_8340)))) (store .cse2 (select (select .cse2 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_8341)))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_7841)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))))) is different from false [2024-11-13 14:36:02,981 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [826672889] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 14:36:02,981 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-13 14:36:02,982 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 11] total 22 [2024-11-13 14:36:02,982 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [415919605] [2024-11-13 14:36:02,982 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-13 14:36:02,982 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-11-13 14:36:02,982 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-13 14:36:02,982 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-11-13 14:36:02,983 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=118, Invalid=508, Unknown=18, NotChecked=616, Total=1260 [2024-11-13 14:36:02,983 INFO L87 Difference]: Start difference. First operand 3365 states and 4351 transitions. Second operand has 23 states, 20 states have (on average 5.45) internal successors, (109), 22 states have internal predecessors, (109), 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) [2024-11-13 14:36:37,909 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:36:37,909 INFO L93 Difference]: Finished difference Result 3366 states and 4353 transitions. [2024-11-13 14:36:37,909 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-13 14:36:37,909 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 20 states have (on average 5.45) internal successors, (109), 22 states have internal predecessors, (109), 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 129 [2024-11-13 14:36:37,910 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:36:37,913 INFO L225 Difference]: With dead ends: 3366 [2024-11-13 14:36:37,913 INFO L226 Difference]: Without dead ends: 3366 [2024-11-13 14:36:37,914 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 285 GetRequests, 246 SyntacticMatches, 2 SemanticMatches, 37 ConstructedPredicates, 11 IntricatePredicates, 0 DeprecatedPredicates, 177 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=139, Invalid=643, Unknown=18, NotChecked=682, Total=1482 [2024-11-13 14:36:37,914 INFO L432 NwaCegarLoop]: 1352 mSDtfsCounter, 1603 mSDsluCounter, 9794 mSDsCounter, 0 mSdLazyCounter, 8418 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 32.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1618 SdHoareTripleChecker+Valid, 11146 SdHoareTripleChecker+Invalid, 8437 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 8418 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 34.4s IncrementalHoareTripleChecker+Time [2024-11-13 14:36:37,914 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1618 Valid, 11146 Invalid, 8437 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [19 Valid, 8418 Invalid, 0 Unknown, 0 Unchecked, 34.4s Time] [2024-11-13 14:36:37,916 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3366 states. [2024-11-13 14:36:37,939 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3366 to 3364. [2024-11-13 14:36:37,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3364 states, 2504 states have (on average 1.7140575079872205) internal successors, (4292), 3335 states have internal predecessors, (4292), 27 states have call successors, (27), 5 states have call predecessors, (27), 6 states have return successors, (30), 24 states have call predecessors, (30), 27 states have call successors, (30) [2024-11-13 14:36:37,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3364 states to 3364 states and 4349 transitions. [2024-11-13 14:36:37,948 INFO L78 Accepts]: Start accepts. Automaton has 3364 states and 4349 transitions. Word has length 129 [2024-11-13 14:36:37,948 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:36:37,948 INFO L471 AbstractCegarLoop]: Abstraction has 3364 states and 4349 transitions. [2024-11-13 14:36:37,949 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 20 states have (on average 5.45) internal successors, (109), 22 states have internal predecessors, (109), 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) [2024-11-13 14:36:37,949 INFO L276 IsEmpty]: Start isEmpty. Operand 3364 states and 4349 transitions. [2024-11-13 14:36:37,949 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2024-11-13 14:36:37,949 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:36:37,950 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, 1] [2024-11-13 14:36:37,982 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f0054df-6fb0-4197-a6fa-b5e5f909ee14/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (47)] Ended with exit code 0 [2024-11-13 14:36:38,178 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f0054df-6fb0-4197-a6fa-b5e5f909ee14/bin/uautomizer-verify-qhAvR1uOyd/cvc4 --incremental --print-success --lang smt (48)] Ended with exit code 0 [2024-11-13 14:36:38,350 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 47 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f0054df-6fb0-4197-a6fa-b5e5f909ee14/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,48 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f0054df-6fb0-4197-a6fa-b5e5f909ee14/bin/uautomizer-verify-qhAvR1uOyd/cvc4 --incremental --print-success --lang smt [2024-11-13 14:36:38,350 INFO L396 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr95REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 1186 more)] === [2024-11-13 14:36:38,351 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:36:38,351 INFO L85 PathProgramCache]: Analyzing trace with hash -1353483460, now seen corresponding path program 1 times [2024-11-13 14:36:38,351 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-13 14:36:38,352 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [817514038] [2024-11-13 14:36:38,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:36:38,352 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:36:38,352 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f0054df-6fb0-4197-a6fa-b5e5f909ee14/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:36:38,353 INFO L229 MonitoredProcess]: Starting monitored process 49 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f0054df-6fb0-4197-a6fa-b5e5f909ee14/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 14:36:38,355 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f0054df-6fb0-4197-a6fa-b5e5f909ee14/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (49)] Waiting until timeout for monitored process [2024-11-13 14:36:39,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:36:39,353 INFO L255 TraceCheckSpWp]: Trace formula consists of 902 conjuncts, 116 conjuncts are in the unsatisfiable core [2024-11-13 14:36:39,365 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 14:36:39,839 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2024-11-13 14:36:39,840 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 [2024-11-13 14:36:39,855 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 [2024-11-13 14:36:39,931 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 [2024-11-13 14:36:39,940 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 [2024-11-13 14:36:40,181 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 [2024-11-13 14:36:40,190 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 [2024-11-13 14:36:41,830 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-13 14:36:41,830 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 [2024-11-13 14:36:41,847 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 13 [2024-11-13 14:36:42,074 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-13 14:36:42,075 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 [2024-11-13 14:36:42,092 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 [2024-11-13 14:36:42,325 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-13 14:36:42,325 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 62 treesize of output 57 [2024-11-13 14:36:42,342 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 [2024-11-13 14:36:42,560 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-13 14:36:42,560 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 [2024-11-13 14:36:42,578 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 [2024-11-13 14:36:42,636 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 [2024-11-13 14:36:42,653 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 [2024-11-13 14:36:42,722 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 946 trivial. 0 not checked. [2024-11-13 14:36:42,722 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 14:36:42,992 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (and (forall ((v_ArrVal_8890 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (select (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_#t~mem41#1.base| v_ArrVal_8890) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (bvule (bvadd (_ bv20 32) .cse0) (bvadd (_ bv24 32) .cse0)))) (forall ((v_ArrVal_8891 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8890 (Array (_ BitVec 32) (_ BitVec 32)))) (bvule (bvadd (_ bv24 32) (select (select (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_#t~mem41#1.base| v_ArrVal_8890) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)) (select |c_#length| (select (select (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem41#1.base| v_ArrVal_8891) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))))) is different from false [2024-11-13 14:36:43,036 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$#1.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (and (forall ((v_ArrVal_8891 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8890 (Array (_ BitVec 32) (_ BitVec 32)))) (bvule (bvadd (_ bv24 32) (select (select (store |c_#memory_$Pointer$#1.offset| .cse0 v_ArrVal_8890) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)) (select |c_#length| (select (select (store |c_#memory_$Pointer$#1.base| .cse0 v_ArrVal_8891) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))) (forall ((v_ArrVal_8890 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse2 (select (select (store |c_#memory_$Pointer$#1.offset| .cse0 v_ArrVal_8890) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (bvule (bvadd (_ bv20 32) .cse2) (bvadd (_ bv24 32) .cse2))))))) is different from false [2024-11-13 14:36:43,116 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (and (forall ((v_ArrVal_8891 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8890 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8889 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8888 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse2 (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem40#1.base| v_ArrVal_8888))) (let ((.cse0 (select (select .cse2 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (bvule (bvadd (_ bv24 32) (select (select (store (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_#t~mem40#1.base| v_ArrVal_8889) .cse0 v_ArrVal_8890) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)) (select |c_#length| (select (select (store .cse2 .cse0 v_ArrVal_8891) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))))) (forall ((v_ArrVal_8890 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8889 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8888 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse3 (select (select (store (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_#t~mem40#1.base| v_ArrVal_8889) (select (select (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem40#1.base| v_ArrVal_8888) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_8890) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (bvule (bvadd (_ bv20 32) .cse3) (bvadd (_ bv24 32) .cse3)))))) is different from false [2024-11-13 14:36:43,176 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$#1.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (and (forall ((v_ArrVal_8891 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8890 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8889 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8888 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse3 (store |c_#memory_$Pointer$#1.base| .cse0 v_ArrVal_8888))) (let ((.cse1 (select (select .cse3 |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (bvule (bvadd (_ bv24 32) (select (select (store (store |c_#memory_$Pointer$#1.offset| .cse0 v_ArrVal_8889) .cse1 v_ArrVal_8890) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2)) (select |c_#length| (select (select (store .cse3 .cse1 v_ArrVal_8891) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2)))))) (forall ((v_ArrVal_8890 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8889 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8888 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse4 (select (select (store (store |c_#memory_$Pointer$#1.offset| .cse0 v_ArrVal_8889) (select (select (store |c_#memory_$Pointer$#1.base| .cse0 v_ArrVal_8888) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2) v_ArrVal_8890) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (bvule (bvadd (_ bv20 32) .cse4) (bvadd (_ bv24 32) .cse4))))))) is different from false [2024-11-13 14:36:43,338 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse2 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (and (forall ((v_ArrVal_8891 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8890 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8889 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8888 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8887 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8886 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse4 (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem39#1.base| v_ArrVal_8886))) (let ((.cse0 (select (select .cse4 |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (let ((.cse3 (store .cse4 .cse0 v_ArrVal_8888))) (let ((.cse1 (select (select .cse3 |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (bvule (bvadd (select (select (store (store (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_#t~mem39#1.base| v_ArrVal_8887) .cse0 v_ArrVal_8889) .cse1 v_ArrVal_8890) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2) (_ bv24 32)) (select |c_#length| (select (select (store .cse3 .cse1 v_ArrVal_8891) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2)))))))) (forall ((v_ArrVal_8890 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8889 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8888 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8887 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8886 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse5 (select (select (let ((.cse7 (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem39#1.base| v_ArrVal_8886))) (let ((.cse6 (select (select .cse7 |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (store (store (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_#t~mem39#1.base| v_ArrVal_8887) .cse6 v_ArrVal_8889) (select (select (store .cse7 .cse6 v_ArrVal_8888) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2) v_ArrVal_8890))) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (bvule (bvadd .cse5 (_ bv20 32)) (bvadd .cse5 (_ bv24 32))))))) is different from false [2024-11-13 14:36:43,702 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse3 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (let ((.cse0 (select (select |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse3))) (and (forall ((v_ArrVal_8891 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8890 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8889 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8888 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8887 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8886 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse5 (store |c_#memory_$Pointer$#1.base| .cse0 v_ArrVal_8886))) (let ((.cse1 (select (select .cse5 |c_ULTIMATE.start_main_~user~0#1.base|) .cse3))) (let ((.cse4 (store .cse5 .cse1 v_ArrVal_8888))) (let ((.cse2 (select (select .cse4 |c_ULTIMATE.start_main_~user~0#1.base|) .cse3))) (bvule (bvadd (_ bv24 32) (select (select (store (store (store |c_#memory_$Pointer$#1.offset| .cse0 v_ArrVal_8887) .cse1 v_ArrVal_8889) .cse2 v_ArrVal_8890) |c_ULTIMATE.start_main_~user~0#1.base|) .cse3)) (select |c_#length| (select (select (store .cse4 .cse2 v_ArrVal_8891) |c_ULTIMATE.start_main_~user~0#1.base|) .cse3)))))))) (forall ((v_ArrVal_8890 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8889 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8888 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8887 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8886 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse6 (select (select (let ((.cse8 (store |c_#memory_$Pointer$#1.base| .cse0 v_ArrVal_8886))) (let ((.cse7 (select (select .cse8 |c_ULTIMATE.start_main_~user~0#1.base|) .cse3))) (store (store (store |c_#memory_$Pointer$#1.offset| .cse0 v_ArrVal_8887) .cse7 v_ArrVal_8889) (select (select (store .cse8 .cse7 v_ArrVal_8888) |c_ULTIMATE.start_main_~user~0#1.base|) .cse3) v_ArrVal_8890))) |c_ULTIMATE.start_main_~user~0#1.base|) .cse3))) (bvule (bvadd (_ bv20 32) .cse6) (bvadd (_ bv24 32) .cse6))))))) is different from false [2024-11-13 14:36:49,814 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse3 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (and (forall ((v_ArrVal_8891 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8890 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8889 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8888 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8887 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8886 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8983 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8982 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse6 (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem37#1.base| v_ArrVal_8983))) (let ((.cse0 (select (select .cse6 |c_ULTIMATE.start_main_~user~0#1.base|) .cse3))) (let ((.cse5 (store .cse6 .cse0 v_ArrVal_8886))) (let ((.cse1 (select (select .cse5 |c_ULTIMATE.start_main_~user~0#1.base|) .cse3))) (let ((.cse4 (store .cse5 .cse1 v_ArrVal_8888))) (let ((.cse2 (select (select .cse4 |c_ULTIMATE.start_main_~user~0#1.base|) .cse3))) (bvule (bvadd (_ bv24 32) (select (select (store (store (store (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_#t~mem37#1.base| v_ArrVal_8982) .cse0 v_ArrVal_8887) .cse1 v_ArrVal_8889) .cse2 v_ArrVal_8890) |c_ULTIMATE.start_main_~user~0#1.base|) .cse3)) (select |c_#length| (select (select (store .cse4 .cse2 v_ArrVal_8891) |c_ULTIMATE.start_main_~user~0#1.base|) .cse3)))))))))) (forall ((v_ArrVal_8890 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8889 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8888 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8887 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8886 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8983 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8982 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse7 (select (select (let ((.cse11 (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem37#1.base| v_ArrVal_8983))) (let ((.cse8 (select (select .cse11 |c_ULTIMATE.start_main_~user~0#1.base|) .cse3))) (let ((.cse10 (store .cse11 .cse8 v_ArrVal_8886))) (let ((.cse9 (select (select .cse10 |c_ULTIMATE.start_main_~user~0#1.base|) .cse3))) (store (store (store (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_#t~mem37#1.base| v_ArrVal_8982) .cse8 v_ArrVal_8887) .cse9 v_ArrVal_8889) (select (select (store .cse10 .cse9 v_ArrVal_8888) |c_ULTIMATE.start_main_~user~0#1.base|) .cse3) v_ArrVal_8890))))) |c_ULTIMATE.start_main_~user~0#1.base|) .cse3))) (bvule (bvadd (_ bv20 32) .cse7) (bvadd (_ bv24 32) .cse7)))))) is different from false [2024-11-13 14:36:49,842 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-13 14:36:49,842 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [817514038] [2024-11-13 14:36:49,842 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [817514038] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 14:36:49,842 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1396216850] [2024-11-13 14:36:49,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:36:49,842 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-13 14:36:49,842 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f0054df-6fb0-4197-a6fa-b5e5f909ee14/bin/uautomizer-verify-qhAvR1uOyd/cvc4 [2024-11-13 14:36:49,844 INFO L229 MonitoredProcess]: Starting monitored process 50 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f0054df-6fb0-4197-a6fa-b5e5f909ee14/bin/uautomizer-verify-qhAvR1uOyd/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-13 14:36:49,845 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0f0054df-6fb0-4197-a6fa-b5e5f909ee14/bin/uautomizer-verify-qhAvR1uOyd/cvc4 --incremental --print-success --lang smt (50)] Waiting until timeout for monitored process [2024-11-13 14:37:10,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:37:10,190 INFO L255 TraceCheckSpWp]: Trace formula consists of 902 conjuncts, 118 conjuncts are in the unsatisfiable core [2024-11-13 14:37:10,204 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 14:37:10,222 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 [2024-11-13 14:37:11,226 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2024-11-13 14:37:11,336 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2024-11-13 14:37:11,336 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 [2024-11-13 14:37:11,426 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 [2024-11-13 14:37:11,450 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 [2024-11-13 14:37:11,832 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 22 treesize of output 10 [2024-11-13 14:37:11,854 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 [2024-11-13 14:37:15,890 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-13 14:37:15,890 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 [2024-11-13 14:37:15,930 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 [2024-11-13 14:37:16,310 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-13 14:37:16,311 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 [2024-11-13 14:37:16,347 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 [2024-11-13 14:37:16,630 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-13 14:37:16,631 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 [2024-11-13 14:37:16,670 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 [2024-11-13 14:37:16,964 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-13 14:37:16,965 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 [2024-11-13 14:37:17,004 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 [2024-11-13 14:37:17,139 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 [2024-11-13 14:37:17,177 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 [2024-11-13 14:37:17,179 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 946 trivial. 0 not checked. [2024-11-13 14:37:17,179 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 14:37:17,381 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (and (forall ((v_ArrVal_9486 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (select (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_#t~mem41#1.base| v_ArrVal_9486) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (bvule (bvadd (_ bv20 32) .cse0) (bvadd (_ bv24 32) .cse0)))) (forall ((v_ArrVal_9486 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_9487 (Array (_ BitVec 32) (_ BitVec 32)))) (bvule (bvadd (_ bv24 32) (select (select (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_#t~mem41#1.base| v_ArrVal_9486) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)) (select |c_#length| (select (select (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem41#1.base| v_ArrVal_9487) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))))) is different from false [2024-11-13 14:37:17,460 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$#1.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (and (forall ((v_ArrVal_9486 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_9487 (Array (_ BitVec 32) (_ BitVec 32)))) (bvule (bvadd (_ bv24 32) (select (select (store |c_#memory_$Pointer$#1.offset| .cse0 v_ArrVal_9486) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)) (select |c_#length| (select (select (store |c_#memory_$Pointer$#1.base| .cse0 v_ArrVal_9487) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))) (forall ((v_ArrVal_9486 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse2 (select (select (store |c_#memory_$Pointer$#1.offset| .cse0 v_ArrVal_9486) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (bvule (bvadd (_ bv20 32) .cse2) (bvadd (_ bv24 32) .cse2))))))) is different from false [2024-11-13 14:37:17,623 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (and (forall ((v_ArrVal_9486 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_9485 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_9484 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_9487 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse2 (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem40#1.base| v_ArrVal_9484))) (let ((.cse0 (select (select .cse2 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (bvule (bvadd (_ bv24 32) (select (select (store (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_#t~mem40#1.base| v_ArrVal_9485) .cse0 v_ArrVal_9486) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)) (select |c_#length| (select (select (store .cse2 .cse0 v_ArrVal_9487) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))))) (forall ((v_ArrVal_9486 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_9485 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_9484 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse3 (select (select (store (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_#t~mem40#1.base| v_ArrVal_9485) (select (select (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem40#1.base| v_ArrVal_9484) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_9486) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (bvule (bvadd (_ bv20 32) .cse3) (bvadd (_ bv24 32) .cse3)))))) is different from false [2024-11-13 14:37:17,770 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$#1.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (and (forall ((v_ArrVal_9486 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_9485 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_9484 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (select (store (store |c_#memory_$Pointer$#1.offset| .cse1 v_ArrVal_9485) (select (select (store |c_#memory_$Pointer$#1.base| .cse1 v_ArrVal_9484) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2) v_ArrVal_9486) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (bvule (bvadd (_ bv20 32) .cse0) (bvadd (_ bv24 32) .cse0)))) (forall ((v_ArrVal_9486 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_9485 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_9484 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_9487 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse4 (store |c_#memory_$Pointer$#1.base| .cse1 v_ArrVal_9484))) (let ((.cse3 (select (select .cse4 |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (bvule (bvadd (_ bv24 32) (select (select (store (store |c_#memory_$Pointer$#1.offset| .cse1 v_ArrVal_9485) .cse3 v_ArrVal_9486) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2)) (select |c_#length| (select (select (store .cse4 .cse3 v_ArrVal_9487) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))))))))) is different from false [2024-11-13 14:37:21,037 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse3 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (let ((.cse0 (select (select |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse3))) (and (forall ((v_ArrVal_9486 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_9485 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_9484 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_9483 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_9482 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_9487 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse5 (store |c_#memory_$Pointer$#1.base| .cse0 v_ArrVal_9483))) (let ((.cse1 (select (select .cse5 |c_ULTIMATE.start_main_~user~0#1.base|) .cse3))) (let ((.cse4 (store .cse5 .cse1 v_ArrVal_9484))) (let ((.cse2 (select (select .cse4 |c_ULTIMATE.start_main_~user~0#1.base|) .cse3))) (bvule (bvadd (select (select (store (store (store |c_#memory_$Pointer$#1.offset| .cse0 v_ArrVal_9482) .cse1 v_ArrVal_9485) .cse2 v_ArrVal_9486) |c_ULTIMATE.start_main_~user~0#1.base|) .cse3) (_ bv24 32)) (select |c_#length| (select (select (store .cse4 .cse2 v_ArrVal_9487) |c_ULTIMATE.start_main_~user~0#1.base|) .cse3)))))))) (forall ((v_ArrVal_9486 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_9485 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_9484 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_9483 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_9482 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse6 (select (select (let ((.cse8 (store |c_#memory_$Pointer$#1.base| .cse0 v_ArrVal_9483))) (let ((.cse7 (select (select .cse8 |c_ULTIMATE.start_main_~user~0#1.base|) .cse3))) (store (store (store |c_#memory_$Pointer$#1.offset| .cse0 v_ArrVal_9482) .cse7 v_ArrVal_9485) (select (select (store .cse8 .cse7 v_ArrVal_9484) |c_ULTIMATE.start_main_~user~0#1.base|) .cse3) v_ArrVal_9486))) |c_ULTIMATE.start_main_~user~0#1.base|) .cse3))) (bvule (bvadd .cse6 (_ bv20 32)) (bvadd .cse6 (_ bv24 32)))))))) is different from false [2024-11-13 14:37:29,226 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse3 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (and (forall ((v_ArrVal_9486 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_9485 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_9484 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_9483 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_9482 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_9579 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_9578 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_9487 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse6 (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem37#1.base| v_ArrVal_9579))) (let ((.cse0 (select (select .cse6 |c_ULTIMATE.start_main_~user~0#1.base|) .cse3))) (let ((.cse5 (store .cse6 .cse0 v_ArrVal_9483))) (let ((.cse1 (select (select .cse5 |c_ULTIMATE.start_main_~user~0#1.base|) .cse3))) (let ((.cse4 (store .cse5 .cse1 v_ArrVal_9484))) (let ((.cse2 (select (select .cse4 |c_ULTIMATE.start_main_~user~0#1.base|) .cse3))) (bvule (bvadd (_ bv24 32) (select (select (store (store (store (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_#t~mem37#1.base| v_ArrVal_9578) .cse0 v_ArrVal_9482) .cse1 v_ArrVal_9485) .cse2 v_ArrVal_9486) |c_ULTIMATE.start_main_~user~0#1.base|) .cse3)) (select |c_#length| (select (select (store .cse4 .cse2 v_ArrVal_9487) |c_ULTIMATE.start_main_~user~0#1.base|) .cse3)))))))))) (forall ((v_ArrVal_9486 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_9485 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_9484 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_9483 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_9482 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_9579 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_9578 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse7 (select (select (let ((.cse11 (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem37#1.base| v_ArrVal_9579))) (let ((.cse8 (select (select .cse11 |c_ULTIMATE.start_main_~user~0#1.base|) .cse3))) (let ((.cse10 (store .cse11 .cse8 v_ArrVal_9483))) (let ((.cse9 (select (select .cse10 |c_ULTIMATE.start_main_~user~0#1.base|) .cse3))) (store (store (store (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_#t~mem37#1.base| v_ArrVal_9578) .cse8 v_ArrVal_9482) .cse9 v_ArrVal_9485) (select (select (store .cse10 .cse9 v_ArrVal_9484) |c_ULTIMATE.start_main_~user~0#1.base|) .cse3) v_ArrVal_9486))))) |c_ULTIMATE.start_main_~user~0#1.base|) .cse3))) (bvule (bvadd (_ bv20 32) .cse7) (bvadd (_ bv24 32) .cse7)))))) is different from false [2024-11-13 14:37:29,269 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1396216850] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 14:37:29,269 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-13 14:37:29,269 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 11 [2024-11-13 14:37:29,269 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [957931378] [2024-11-13 14:37:29,269 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-13 14:37:29,270 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-13 14:37:29,270 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-13 14:37:29,270 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-13 14:37:29,270 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=179, Unknown=18, NotChecked=494, Total=756 [2024-11-13 14:37:29,271 INFO L87 Difference]: Start difference. First operand 3364 states and 4349 transitions. Second operand has 12 states, 10 states have (on average 8.9) internal successors, (89), 12 states have internal predecessors, (89), 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)