./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/uthash-2.0.2/uthash_BER_test10-2.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_afbd63cc-39ec-4e64-9612-8b06172106ae/bin/uautomizer-verify-qhAvR1uOyd/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afbd63cc-39ec-4e64-9612-8b06172106ae/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_afbd63cc-39ec-4e64-9612-8b06172106ae/bin/uautomizer-verify-qhAvR1uOyd/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afbd63cc-39ec-4e64-9612-8b06172106ae/bin/uautomizer-verify-qhAvR1uOyd/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_BER_test10-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afbd63cc-39ec-4e64-9612-8b06172106ae/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_afbd63cc-39ec-4e64-9612-8b06172106ae/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 e2d96ac7da90505ebe789a14ca36a5b916234d7d0d8ab11cf581076a8deb0195 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-826ab2b [2024-11-13 15:28:22,685 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-13 15:28:22,778 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afbd63cc-39ec-4e64-9612-8b06172106ae/bin/uautomizer-verify-qhAvR1uOyd/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2024-11-13 15:28:22,784 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-13 15:28:22,785 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-13 15:28:22,817 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-13 15:28:22,818 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-13 15:28:22,818 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-13 15:28:22,818 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-13 15:28:22,819 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-13 15:28:22,819 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-13 15:28:22,819 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-13 15:28:22,820 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-13 15:28:22,820 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-13 15:28:22,820 INFO L153 SettingsManager]: * Use SBE=true [2024-11-13 15:28:22,820 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-13 15:28:22,820 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-13 15:28:22,821 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-13 15:28:22,821 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-13 15:28:22,821 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-13 15:28:22,821 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-11-13 15:28:22,821 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-11-13 15:28:22,822 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-11-13 15:28:22,822 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-13 15:28:22,822 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-13 15:28:22,822 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-13 15:28:22,822 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-13 15:28:22,822 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-13 15:28:22,822 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-13 15:28:22,823 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-13 15:28:22,823 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-13 15:28:22,823 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-13 15:28:22,823 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-13 15:28:22,823 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-13 15:28:22,823 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-13 15:28:22,823 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-13 15:28:22,824 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-13 15:28:22,824 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-13 15:28:22,824 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-13 15:28:22,824 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-13 15:28:22,824 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-13 15:28:22,825 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-13 15:28:22,825 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_afbd63cc-39ec-4e64-9612-8b06172106ae/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 -> e2d96ac7da90505ebe789a14ca36a5b916234d7d0d8ab11cf581076a8deb0195 [2024-11-13 15:28:23,202 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-13 15:28:23,220 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-13 15:28:23,227 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-13 15:28:23,229 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-13 15:28:23,229 INFO L274 PluginConnector]: CDTParser initialized [2024-11-13 15:28:23,231 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afbd63cc-39ec-4e64-9612-8b06172106ae/bin/uautomizer-verify-qhAvR1uOyd/../../sv-benchmarks/c/uthash-2.0.2/uthash_BER_test10-2.i Unable to find full path for "g++" [2024-11-13 15:28:25,817 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-13 15:28:26,407 INFO L384 CDTParser]: Found 1 translation units. [2024-11-13 15:28:26,408 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afbd63cc-39ec-4e64-9612-8b06172106ae/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test10-2.i [2024-11-13 15:28:26,446 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afbd63cc-39ec-4e64-9612-8b06172106ae/bin/uautomizer-verify-qhAvR1uOyd/data/4d3f07ba2/1264a788cb83427da6c9d0a801ce3134/FLAG6b4c1b699 [2024-11-13 15:28:26,471 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afbd63cc-39ec-4e64-9612-8b06172106ae/bin/uautomizer-verify-qhAvR1uOyd/data/4d3f07ba2/1264a788cb83427da6c9d0a801ce3134 [2024-11-13 15:28:26,475 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-13 15:28:26,479 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-13 15:28:26,481 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-13 15:28:26,481 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-13 15:28:26,492 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-13 15:28:26,493 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 03:28:26" (1/1) ... [2024-11-13 15:28:26,494 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@63674613 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:28:26, skipping insertion in model container [2024-11-13 15:28:26,495 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 03:28:26" (1/1) ... [2024-11-13 15:28:26,579 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-13 15:28:27,273 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 15:28:27,317 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 15:28:27,323 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-13 15:28:27,330 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 15:28:27,340 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 15:28:27,400 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 15:28:27,410 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 15:28:27,417 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 15:28:27,427 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 15:28:27,467 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 15:28:27,468 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-13 15:28:27,472 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 15:28:27,472 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 15:28:27,497 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 15:28:27,497 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 15:28:27,501 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 15:28:27,502 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 15:28:27,527 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-13 15:28:27,527 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-13 15:28:27,531 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 15:28:27,531 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 15:28:27,553 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 15:28:27,554 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 15:28:27,562 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-13 15:28:27,562 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-13 15:28:27,569 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 15:28:27,572 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 15:28:27,577 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 15:28:27,578 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 15:28:27,582 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 15:28:27,594 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 15:28:27,618 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-13 15:28:27,652 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 15:28:27,653 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@74b00eca and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:28:27, skipping insertion in model container [2024-11-13 15:28:27,653 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-13 15:28:27,654 INFO L186 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2024-11-13 15:28:27,658 INFO L158 Benchmark]: Toolchain (without parser) took 1177.94ms. Allocated memory is still 117.4MB. Free memory was 90.1MB in the beginning and 60.9MB in the end (delta: 29.3MB). Peak memory consumption was 33.6MB. Max. memory is 16.1GB. [2024-11-13 15:28:27,659 INFO L158 Benchmark]: CDTParser took 1.34ms. Allocated memory is still 83.9MB. Free memory is still 41.1MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-13 15:28:27,660 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1173.62ms. Allocated memory is still 117.4MB. Free memory was 89.7MB in the beginning and 60.9MB in the end (delta: 28.9MB). Peak memory consumption was 33.6MB. Max. memory is 16.1GB. [2024-11-13 15:28:27,665 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 1.34ms. Allocated memory is still 83.9MB. Free memory is still 41.1MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 1173.62ms. Allocated memory is still 117.4MB. Free memory was 89.7MB in the beginning and 60.9MB in the end (delta: 28.9MB). Peak memory consumption was 33.6MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 757]: 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_afbd63cc-39ec-4e64-9612-8b06172106ae/bin/uautomizer-verify-qhAvR1uOyd/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afbd63cc-39ec-4e64-9612-8b06172106ae/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_afbd63cc-39ec-4e64-9612-8b06172106ae/bin/uautomizer-verify-qhAvR1uOyd/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afbd63cc-39ec-4e64-9612-8b06172106ae/bin/uautomizer-verify-qhAvR1uOyd/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_BER_test10-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afbd63cc-39ec-4e64-9612-8b06172106ae/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_afbd63cc-39ec-4e64-9612-8b06172106ae/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 e2d96ac7da90505ebe789a14ca36a5b916234d7d0d8ab11cf581076a8deb0195 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-826ab2b [2024-11-13 15:28:31,013 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-13 15:28:31,156 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afbd63cc-39ec-4e64-9612-8b06172106ae/bin/uautomizer-verify-qhAvR1uOyd/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2024-11-13 15:28:31,175 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-13 15:28:31,175 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-13 15:28:31,234 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-13 15:28:31,235 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-13 15:28:31,235 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-13 15:28:31,235 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-13 15:28:31,236 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-13 15:28:31,236 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-13 15:28:31,236 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-13 15:28:31,236 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-13 15:28:31,236 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-13 15:28:31,237 INFO L153 SettingsManager]: * Use SBE=true [2024-11-13 15:28:31,237 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-13 15:28:31,237 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-13 15:28:31,240 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-13 15:28:31,241 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-13 15:28:31,242 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-13 15:28:31,242 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-11-13 15:28:31,242 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-11-13 15:28:31,242 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-11-13 15:28:31,243 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-13 15:28:31,243 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-13 15:28:31,243 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2024-11-13 15:28:31,243 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-13 15:28:31,243 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2024-11-13 15:28:31,243 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-13 15:28:31,243 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-13 15:28:31,243 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-13 15:28:31,244 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-13 15:28:31,244 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-13 15:28:31,244 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-13 15:28:31,244 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-13 15:28:31,244 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-13 15:28:31,244 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-13 15:28:31,244 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-13 15:28:31,245 INFO L153 SettingsManager]: * Trace refinement strategy=FOX [2024-11-13 15:28:31,245 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2024-11-13 15:28:31,245 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-13 15:28:31,245 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-13 15:28:31,245 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-13 15:28:31,245 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-13 15:28:31,247 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_afbd63cc-39ec-4e64-9612-8b06172106ae/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 -> e2d96ac7da90505ebe789a14ca36a5b916234d7d0d8ab11cf581076a8deb0195 [2024-11-13 15:28:31,652 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-13 15:28:31,668 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-13 15:28:31,671 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-13 15:28:31,673 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-13 15:28:31,674 INFO L274 PluginConnector]: CDTParser initialized [2024-11-13 15:28:31,675 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afbd63cc-39ec-4e64-9612-8b06172106ae/bin/uautomizer-verify-qhAvR1uOyd/../../sv-benchmarks/c/uthash-2.0.2/uthash_BER_test10-2.i Unable to find full path for "g++" [2024-11-13 15:28:34,233 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-13 15:28:34,829 INFO L384 CDTParser]: Found 1 translation units. [2024-11-13 15:28:34,831 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afbd63cc-39ec-4e64-9612-8b06172106ae/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test10-2.i [2024-11-13 15:28:34,870 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afbd63cc-39ec-4e64-9612-8b06172106ae/bin/uautomizer-verify-qhAvR1uOyd/data/eaf147e36/44b29c87052c448fa68f932b88705877/FLAG91a617faa [2024-11-13 15:28:34,897 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afbd63cc-39ec-4e64-9612-8b06172106ae/bin/uautomizer-verify-qhAvR1uOyd/data/eaf147e36/44b29c87052c448fa68f932b88705877 [2024-11-13 15:28:34,900 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-13 15:28:34,903 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-13 15:28:34,905 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-13 15:28:34,905 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-13 15:28:34,913 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-13 15:28:34,914 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 03:28:34" (1/1) ... [2024-11-13 15:28:34,916 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@79bd14e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:28:34, skipping insertion in model container [2024-11-13 15:28:34,919 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 03:28:34" (1/1) ... [2024-11-13 15:28:35,003 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-13 15:28:35,747 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 15:28:35,832 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 15:28:35,838 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 15:28:35,846 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 15:28:35,858 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 15:28:35,942 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 15:28:35,948 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 15:28:35,958 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 15:28:35,969 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 15:28:36,010 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 15:28:36,011 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 15:28:36,015 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 15:28:36,016 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 15:28:36,040 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 15:28:36,040 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 15:28:36,044 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 15:28:36,045 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 15:28:36,067 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 15:28:36,067 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 15:28:36,071 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 15:28:36,072 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 15:28:36,094 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 15:28:36,095 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 15:28:36,099 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 15:28:36,099 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 15:28:36,102 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 15:28:36,109 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 15:28:36,111 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 15:28:36,112 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 15:28:36,113 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 15:28:36,119 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 15:28:36,131 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-13 15:28:36,150 INFO L197 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2024-11-13 15:28:36,169 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-13 15:28:36,208 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 15:28:36,227 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 15:28:36,230 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 15:28:36,234 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-13 15:28:36,242 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 15:28:36,270 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 15:28:36,272 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 15:28:36,275 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 15:28:36,281 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 15:28:36,307 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 15:28:36,308 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 15:28:36,311 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 15:28:36,311 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 15:28:36,329 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 15:28:36,329 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 15:28:36,333 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 15:28:36,333 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 15:28:36,373 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 15:28:36,374 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-13 15:28:36,377 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 15:28:36,377 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 15:28:36,393 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 15:28:36,393 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 15:28:36,396 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 15:28:36,396 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 15:28:36,398 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 15:28:36,401 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 15:28:36,402 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 15:28:36,403 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 15:28:36,404 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 15:28:36,409 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 15:28:36,415 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-13 15:28:36,421 INFO L200 MainTranslator]: Completed pre-run [2024-11-13 15:28:36,638 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-13 15:28:36,697 INFO L204 MainTranslator]: Completed translation [2024-11-13 15:28:36,698 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:28:36 WrapperNode [2024-11-13 15:28:36,698 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-13 15:28:36,700 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-13 15:28:36,701 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-13 15:28:36,701 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-13 15:28:36,714 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:28:36" (1/1) ... [2024-11-13 15:28:36,772 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:28:36" (1/1) ... [2024-11-13 15:28:36,924 INFO L138 Inliner]: procedures = 180, calls = 558, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 2353 [2024-11-13 15:28:36,924 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-13 15:28:36,925 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-13 15:28:36,925 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-13 15:28:36,925 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-13 15:28:36,937 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:28:36" (1/1) ... [2024-11-13 15:28:36,938 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:28:36" (1/1) ... [2024-11-13 15:28:36,966 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:28:36" (1/1) ... [2024-11-13 15:28:37,285 INFO L175 MemorySlicer]: Split 528 memory accesses to 3 slices as follows [2, 106, 420]. 80 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0]. The 94 writes are split as follows [0, 4, 90]. [2024-11-13 15:28:37,289 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:28:36" (1/1) ... [2024-11-13 15:28:37,290 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:28:36" (1/1) ... [2024-11-13 15:28:37,416 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:28:36" (1/1) ... [2024-11-13 15:28:37,436 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:28:36" (1/1) ... [2024-11-13 15:28:37,445 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:28:36" (1/1) ... [2024-11-13 15:28:37,454 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:28:36" (1/1) ... [2024-11-13 15:28:37,472 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-13 15:28:37,473 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-13 15:28:37,473 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-13 15:28:37,473 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-13 15:28:37,475 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:28:36" (1/1) ... [2024-11-13 15:28:37,490 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-13 15:28:37,512 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afbd63cc-39ec-4e64-9612-8b06172106ae/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:28:37,529 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afbd63cc-39ec-4e64-9612-8b06172106ae/bin/uautomizer-verify-qhAvR1uOyd/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-13 15:28:37,533 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afbd63cc-39ec-4e64-9612-8b06172106ae/bin/uautomizer-verify-qhAvR1uOyd/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-13 15:28:37,571 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#0 [2024-11-13 15:28:37,571 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#1 [2024-11-13 15:28:37,571 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#2 [2024-11-13 15:28:37,572 INFO L130 BoogieDeclarations]: Found specification of procedure test_int_int [2024-11-13 15:28:37,572 INFO L138 BoogieDeclarations]: Found implementation of procedure test_int_int [2024-11-13 15:28:37,572 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#0 [2024-11-13 15:28:37,572 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#1 [2024-11-13 15:28:37,573 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#2 [2024-11-13 15:28:37,573 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-11-13 15:28:37,573 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-11-13 15:28:37,573 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#0 [2024-11-13 15:28:37,574 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#1 [2024-11-13 15:28:37,576 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#2 [2024-11-13 15:28:37,577 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#0 [2024-11-13 15:28:37,577 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#1 [2024-11-13 15:28:37,577 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#2 [2024-11-13 15:28:37,577 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-13 15:28:37,578 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-13 15:28:37,578 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2024-11-13 15:28:37,578 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2024-11-13 15:28:37,579 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2024-11-13 15:28:37,579 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-13 15:28:37,579 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2024-11-13 15:28:37,579 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2024-11-13 15:28:37,579 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2024-11-13 15:28:37,579 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-13 15:28:37,579 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#0 [2024-11-13 15:28:37,579 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#1 [2024-11-13 15:28:37,580 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#2 [2024-11-13 15:28:37,580 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2024-11-13 15:28:37,580 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#1 [2024-11-13 15:28:37,580 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#2 [2024-11-13 15:28:37,580 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-13 15:28:37,580 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-13 15:28:38,117 INFO L238 CfgBuilder]: Building ICFG [2024-11-13 15:28:38,121 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-13 15:28:38,226 WARN L781 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2024-11-13 15:28:38,279 WARN L781 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2024-11-13 15:28:38,327 WARN L781 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2024-11-13 15:28:52,052 INFO L? ?]: Removed 2231 outVars from TransFormulas that were not future-live. [2024-11-13 15:28:52,052 INFO L287 CfgBuilder]: Performing block encoding [2024-11-13 15:28:52,160 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-13 15:28:52,164 INFO L316 CfgBuilder]: Removed 160 assume(true) statements. [2024-11-13 15:28:52,165 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 03:28:52 BoogieIcfgContainer [2024-11-13 15:28:52,165 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-13 15:28:52,172 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-13 15:28:52,173 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-13 15:28:52,180 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-13 15:28:52,180 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.11 03:28:34" (1/3) ... [2024-11-13 15:28:52,181 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3ef6f086 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 03:28:52, skipping insertion in model container [2024-11-13 15:28:52,181 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:28:36" (2/3) ... [2024-11-13 15:28:52,182 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3ef6f086 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 03:28:52, skipping insertion in model container [2024-11-13 15:28:52,182 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 03:28:52" (3/3) ... [2024-11-13 15:28:52,183 INFO L112 eAbstractionObserver]: Analyzing ICFG uthash_BER_test10-2.i [2024-11-13 15:28:52,212 INFO L217 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-13 15:28:52,214 INFO L154 ceAbstractionStarter]: Applying trace abstraction to ICFG uthash_BER_test10-2.i that has 6 procedures, 2286 locations, 1 initial locations, 89 loop locations, and 1091 error locations. [2024-11-13 15:28:52,359 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-13 15:28:52,381 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;@6dcb5ff0, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-13 15:28:52,381 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1091 error locations. [2024-11-13 15:28:52,398 INFO L276 IsEmpty]: Start isEmpty. Operand has 2276 states, 1173 states have (on average 2.1884057971014492) internal successors, (2567), 2262 states have internal predecessors, (2567), 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 15:28:52,406 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2024-11-13 15:28:52,406 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 15:28:52,407 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1] [2024-11-13 15:28:52,408 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 1088 more)] === [2024-11-13 15:28:52,417 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:28:52,419 INFO L85 PathProgramCache]: Analyzing trace with hash 84472, now seen corresponding path program 1 times [2024-11-13 15:28:52,437 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-13 15:28:52,438 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [184482662] [2024-11-13 15:28:52,438 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:28:52,439 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:28:52,439 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afbd63cc-39ec-4e64-9612-8b06172106ae/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:28:52,443 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afbd63cc-39ec-4e64-9612-8b06172106ae/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 15:28:52,447 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afbd63cc-39ec-4e64-9612-8b06172106ae/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-13 15:28:52,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:28:52,839 INFO L255 TraceCheckSpWp]: Trace formula consists of 26 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-13 15:28:52,850 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:28:52,893 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 15:28:52,917 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 15:28:52,917 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 15:28:52,918 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-13 15:28:52,918 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [184482662] [2024-11-13 15:28:52,919 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [184482662] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 15:28:52,919 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 15:28:52,919 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-13 15:28:52,921 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1954711627] [2024-11-13 15:28:52,922 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 15:28:52,926 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-13 15:28:52,926 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-13 15:28:52,952 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-13 15:28:52,952 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 15:28:52,959 INFO L87 Difference]: Start difference. First operand has 2276 states, 1173 states have (on average 2.1884057971014492) internal successors, (2567), 2262 states have internal predecessors, (2567), 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 15:28:59,185 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 15:28:59,186 INFO L93 Difference]: Finished difference Result 2940 states and 3124 transitions. [2024-11-13 15:28:59,187 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-13 15:28:59,188 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 15:28:59,189 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 15:28:59,231 INFO L225 Difference]: With dead ends: 2940 [2024-11-13 15:28:59,231 INFO L226 Difference]: Without dead ends: 2938 [2024-11-13 15:28:59,233 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 15:28:59,239 INFO L432 NwaCegarLoop]: 1400 mSDtfsCounter, 2142 mSDsluCounter, 478 mSDsCounter, 0 mSdLazyCounter, 1476 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2152 SdHoareTripleChecker+Valid, 1878 SdHoareTripleChecker+Invalid, 1501 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 1476 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.0s IncrementalHoareTripleChecker+Time [2024-11-13 15:28:59,241 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2152 Valid, 1878 Invalid, 1501 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [25 Valid, 1476 Invalid, 0 Unknown, 0 Unchecked, 6.0s Time] [2024-11-13 15:28:59,292 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2938 states. [2024-11-13 15:28:59,432 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2938 to 2420. [2024-11-13 15:28:59,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2420 states, 1345 states have (on average 2.0230483271375466) internal successors, (2721), 2404 states have internal predecessors, (2721), 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 15:28:59,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2420 states to 2420 states and 2753 transitions. [2024-11-13 15:28:59,457 INFO L78 Accepts]: Start accepts. Automaton has 2420 states and 2753 transitions. Word has length 3 [2024-11-13 15:28:59,458 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 15:28:59,458 INFO L471 AbstractCegarLoop]: Abstraction has 2420 states and 2753 transitions. [2024-11-13 15:28:59,458 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 15:28:59,458 INFO L276 IsEmpty]: Start isEmpty. Operand 2420 states and 2753 transitions. [2024-11-13 15:28:59,458 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2024-11-13 15:28:59,459 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 15:28:59,459 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1] [2024-11-13 15:28:59,481 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afbd63cc-39ec-4e64-9612-8b06172106ae/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-13 15:28:59,659 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afbd63cc-39ec-4e64-9612-8b06172106ae/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:28:59,660 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 1088 more)] === [2024-11-13 15:28:59,660 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:28:59,661 INFO L85 PathProgramCache]: Analyzing trace with hash 84473, now seen corresponding path program 1 times [2024-11-13 15:28:59,661 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-13 15:28:59,661 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1098734150] [2024-11-13 15:28:59,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:28:59,661 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:28:59,661 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afbd63cc-39ec-4e64-9612-8b06172106ae/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:28:59,666 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afbd63cc-39ec-4e64-9612-8b06172106ae/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 15:28:59,667 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afbd63cc-39ec-4e64-9612-8b06172106ae/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-13 15:28:59,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:28:59,891 INFO L255 TraceCheckSpWp]: Trace formula consists of 26 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-13 15:28:59,894 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:28:59,906 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 15:28:59,927 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 15:28:59,928 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 15:28:59,928 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-13 15:28:59,928 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1098734150] [2024-11-13 15:28:59,928 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1098734150] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 15:28:59,928 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 15:28:59,928 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-13 15:28:59,928 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1535856693] [2024-11-13 15:28:59,928 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 15:28:59,929 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-13 15:28:59,930 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-13 15:28:59,930 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-13 15:28:59,930 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 15:28:59,932 INFO L87 Difference]: Start difference. First operand 2420 states and 2753 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 15:29:07,519 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 15:29:07,519 INFO L93 Difference]: Finished difference Result 3221 states and 3634 transitions. [2024-11-13 15:29:07,521 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-13 15:29:07,521 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 15:29:07,521 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 15:29:07,536 INFO L225 Difference]: With dead ends: 3221 [2024-11-13 15:29:07,536 INFO L226 Difference]: Without dead ends: 3221 [2024-11-13 15:29:07,537 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 15:29:07,539 INFO L432 NwaCegarLoop]: 2038 mSDtfsCounter, 875 mSDsluCounter, 1307 mSDsCounter, 0 mSdLazyCounter, 1427 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 878 SdHoareTripleChecker+Valid, 3345 SdHoareTripleChecker+Invalid, 1438 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 1427 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.4s IncrementalHoareTripleChecker+Time [2024-11-13 15:29:07,540 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [878 Valid, 3345 Invalid, 1438 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 1427 Invalid, 0 Unknown, 0 Unchecked, 7.4s Time] [2024-11-13 15:29:07,552 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3221 states. [2024-11-13 15:29:07,635 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3221 to 2893. [2024-11-13 15:29:07,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2893 states, 1816 states have (on average 1.9801762114537445) internal successors, (3596), 2874 states have internal predecessors, (3596), 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 15:29:07,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2893 states to 2893 states and 3634 transitions. [2024-11-13 15:29:07,657 INFO L78 Accepts]: Start accepts. Automaton has 2893 states and 3634 transitions. Word has length 3 [2024-11-13 15:29:07,657 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 15:29:07,657 INFO L471 AbstractCegarLoop]: Abstraction has 2893 states and 3634 transitions. [2024-11-13 15:29:07,657 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 15:29:07,658 INFO L276 IsEmpty]: Start isEmpty. Operand 2893 states and 3634 transitions. [2024-11-13 15:29:07,658 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2024-11-13 15:29:07,658 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 15:29:07,660 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-11-13 15:29:07,687 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afbd63cc-39ec-4e64-9612-8b06172106ae/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-13 15:29:07,860 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afbd63cc-39ec-4e64-9612-8b06172106ae/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:29:07,861 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 1088 more)] === [2024-11-13 15:29:07,861 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:29:07,861 INFO L85 PathProgramCache]: Analyzing trace with hash 703308354, now seen corresponding path program 1 times [2024-11-13 15:29:07,862 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-13 15:29:07,862 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1027706022] [2024-11-13 15:29:07,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:29:07,862 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:29:07,862 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afbd63cc-39ec-4e64-9612-8b06172106ae/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:29:07,866 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afbd63cc-39ec-4e64-9612-8b06172106ae/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 15:29:07,870 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afbd63cc-39ec-4e64-9612-8b06172106ae/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-13 15:29:08,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:29:08,163 INFO L255 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-13 15:29:08,167 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:29:08,177 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 15:29:08,289 INFO L349 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2024-11-13 15:29:08,289 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 15:29:08,420 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 15:29:08,420 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 15:29:08,421 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-13 15:29:08,421 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1027706022] [2024-11-13 15:29:08,421 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1027706022] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 15:29:08,421 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 15:29:08,421 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-13 15:29:08,421 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [254631945] [2024-11-13 15:29:08,422 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 15:29:08,422 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-13 15:29:08,422 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-13 15:29:08,423 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-13 15:29:08,423 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-13 15:29:08,423 INFO L87 Difference]: Start difference. First operand 2893 states and 3634 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 15:29:22,862 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 15:29:22,863 INFO L93 Difference]: Finished difference Result 4579 states and 5105 transitions. [2024-11-13 15:29:22,864 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-13 15:29:22,864 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 15:29:22,864 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 15:29:22,881 INFO L225 Difference]: With dead ends: 4579 [2024-11-13 15:29:22,881 INFO L226 Difference]: Without dead ends: 4579 [2024-11-13 15:29:22,882 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-13 15:29:22,886 INFO L432 NwaCegarLoop]: 2306 mSDtfsCounter, 2331 mSDsluCounter, 2608 mSDsCounter, 0 mSdLazyCounter, 3136 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2337 SdHoareTripleChecker+Valid, 4914 SdHoareTripleChecker+Invalid, 3153 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 3136 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14.3s IncrementalHoareTripleChecker+Time [2024-11-13 15:29:22,887 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2337 Valid, 4914 Invalid, 3153 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [17 Valid, 3136 Invalid, 0 Unknown, 0 Unchecked, 14.3s Time] [2024-11-13 15:29:22,894 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4579 states. [2024-11-13 15:29:22,953 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4579 to 3179. [2024-11-13 15:29:22,959 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3179 states, 2102 states have (on average 1.9766888677450047) internal successors, (4155), 3160 states have internal predecessors, (4155), 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 15:29:22,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3179 states to 3179 states and 4193 transitions. [2024-11-13 15:29:22,974 INFO L78 Accepts]: Start accepts. Automaton has 3179 states and 4193 transitions. Word has length 7 [2024-11-13 15:29:22,974 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 15:29:22,974 INFO L471 AbstractCegarLoop]: Abstraction has 3179 states and 4193 transitions. [2024-11-13 15:29:22,974 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 15:29:22,974 INFO L276 IsEmpty]: Start isEmpty. Operand 3179 states and 4193 transitions. [2024-11-13 15:29:22,974 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2024-11-13 15:29:22,975 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 15:29:22,975 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 15:29:23,004 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afbd63cc-39ec-4e64-9612-8b06172106ae/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-13 15:29:23,180 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afbd63cc-39ec-4e64-9612-8b06172106ae/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:29:23,182 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 1088 more)] === [2024-11-13 15:29:23,183 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:29:23,183 INFO L85 PathProgramCache]: Analyzing trace with hash 327722514, now seen corresponding path program 1 times [2024-11-13 15:29:23,183 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-13 15:29:23,184 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [808669222] [2024-11-13 15:29:23,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:29:23,184 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:29:23,184 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afbd63cc-39ec-4e64-9612-8b06172106ae/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:29:23,191 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afbd63cc-39ec-4e64-9612-8b06172106ae/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 15:29:23,197 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afbd63cc-39ec-4e64-9612-8b06172106ae/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-13 15:29:23,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:29:23,504 INFO L255 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-13 15:29:23,507 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:29:23,521 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 15:29:23,546 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 15:29:23,547 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 15:29:23,547 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-13 15:29:23,547 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [808669222] [2024-11-13 15:29:23,547 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [808669222] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 15:29:23,547 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 15:29:23,547 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-13 15:29:23,547 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1993712799] [2024-11-13 15:29:23,547 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 15:29:23,548 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-13 15:29:23,548 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-13 15:29:23,548 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-13 15:29:23,548 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 15:29:23,548 INFO L87 Difference]: Start difference. First operand 3179 states and 4193 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 15:29:29,893 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 15:29:29,893 INFO L93 Difference]: Finished difference Result 3891 states and 4944 transitions. [2024-11-13 15:29:29,894 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-13 15:29:29,894 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 15:29:29,894 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 15:29:29,910 INFO L225 Difference]: With dead ends: 3891 [2024-11-13 15:29:29,910 INFO L226 Difference]: Without dead ends: 3891 [2024-11-13 15:29:29,911 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 15:29:29,912 INFO L432 NwaCegarLoop]: 2224 mSDtfsCounter, 1920 mSDsluCounter, 676 mSDsCounter, 0 mSdLazyCounter, 1518 mSolverCounterSat, 99 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1930 SdHoareTripleChecker+Valid, 2900 SdHoareTripleChecker+Invalid, 1617 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 99 IncrementalHoareTripleChecker+Valid, 1518 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.2s IncrementalHoareTripleChecker+Time [2024-11-13 15:29:29,912 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1930 Valid, 2900 Invalid, 1617 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [99 Valid, 1518 Invalid, 0 Unknown, 0 Unchecked, 6.2s Time] [2024-11-13 15:29:29,919 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3891 states. [2024-11-13 15:29:29,982 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3891 to 3087. [2024-11-13 15:29:29,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3087 states, 2102 states have (on average 1.9129400570884871) internal successors, (4021), 3068 states have internal predecessors, (4021), 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 15:29:30,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3087 states to 3087 states and 4059 transitions. [2024-11-13 15:29:30,005 INFO L78 Accepts]: Start accepts. Automaton has 3087 states and 4059 transitions. Word has length 8 [2024-11-13 15:29:30,005 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 15:29:30,005 INFO L471 AbstractCegarLoop]: Abstraction has 3087 states and 4059 transitions. [2024-11-13 15:29:30,006 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 15:29:30,006 INFO L276 IsEmpty]: Start isEmpty. Operand 3087 states and 4059 transitions. [2024-11-13 15:29:30,006 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2024-11-13 15:29:30,006 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 15:29:30,006 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 15:29:30,036 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afbd63cc-39ec-4e64-9612-8b06172106ae/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-13 15:29:30,210 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afbd63cc-39ec-4e64-9612-8b06172106ae/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:29:30,211 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 1088 more)] === [2024-11-13 15:29:30,211 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:29:30,211 INFO L85 PathProgramCache]: Analyzing trace with hash 327722515, now seen corresponding path program 1 times [2024-11-13 15:29:30,212 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-13 15:29:30,212 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1006927042] [2024-11-13 15:29:30,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:29:30,212 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:29:30,213 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afbd63cc-39ec-4e64-9612-8b06172106ae/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:29:30,215 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afbd63cc-39ec-4e64-9612-8b06172106ae/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 15:29:30,217 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afbd63cc-39ec-4e64-9612-8b06172106ae/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-13 15:29:30,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:29:30,527 INFO L255 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-13 15:29:30,531 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:29:30,549 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 15:29:30,596 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 15:29:30,596 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 15:29:30,596 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-13 15:29:30,596 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1006927042] [2024-11-13 15:29:30,596 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1006927042] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 15:29:30,597 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 15:29:30,597 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-13 15:29:30,597 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [485431005] [2024-11-13 15:29:30,597 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 15:29:30,597 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-13 15:29:30,598 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-13 15:29:30,598 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-13 15:29:30,598 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 15:29:30,599 INFO L87 Difference]: Start difference. First operand 3087 states and 4059 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 15:29:39,750 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 15:29:39,750 INFO L93 Difference]: Finished difference Result 4699 states and 6159 transitions. [2024-11-13 15:29:39,751 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-13 15:29:39,751 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 15:29:39,751 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 15:29:39,764 INFO L225 Difference]: With dead ends: 4699 [2024-11-13 15:29:39,764 INFO L226 Difference]: Without dead ends: 4699 [2024-11-13 15:29:39,764 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 15:29:39,765 INFO L432 NwaCegarLoop]: 2576 mSDtfsCounter, 1423 mSDsluCounter, 1107 mSDsCounter, 0 mSdLazyCounter, 1592 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1427 SdHoareTripleChecker+Valid, 3683 SdHoareTripleChecker+Invalid, 1617 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 1592 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.0s IncrementalHoareTripleChecker+Time [2024-11-13 15:29:39,765 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1427 Valid, 3683 Invalid, 1617 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 1592 Invalid, 0 Unknown, 0 Unchecked, 9.0s Time] [2024-11-13 15:29:39,770 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4699 states. [2024-11-13 15:29:39,828 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4699 to 3254. [2024-11-13 15:29:39,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3254 states, 2279 states have (on average 1.8960070206230804) internal successors, (4321), 3235 states have internal predecessors, (4321), 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 15:29:39,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3254 states to 3254 states and 4359 transitions. [2024-11-13 15:29:39,845 INFO L78 Accepts]: Start accepts. Automaton has 3254 states and 4359 transitions. Word has length 8 [2024-11-13 15:29:39,845 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 15:29:39,845 INFO L471 AbstractCegarLoop]: Abstraction has 3254 states and 4359 transitions. [2024-11-13 15:29:39,845 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 15:29:39,846 INFO L276 IsEmpty]: Start isEmpty. Operand 3254 states and 4359 transitions. [2024-11-13 15:29:39,846 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2024-11-13 15:29:39,846 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 15:29:39,846 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 15:29:39,876 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afbd63cc-39ec-4e64-9612-8b06172106ae/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-13 15:29:40,047 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afbd63cc-39ec-4e64-9612-8b06172106ae/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:29:40,047 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr638REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 1088 more)] === [2024-11-13 15:29:40,048 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:29:40,048 INFO L85 PathProgramCache]: Analyzing trace with hash -1292249561, now seen corresponding path program 1 times [2024-11-13 15:29:40,049 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-13 15:29:40,049 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [40428370] [2024-11-13 15:29:40,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:29:40,049 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:29:40,049 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afbd63cc-39ec-4e64-9612-8b06172106ae/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:29:40,052 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afbd63cc-39ec-4e64-9612-8b06172106ae/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 15:29:40,056 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afbd63cc-39ec-4e64-9612-8b06172106ae/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-13 15:29:40,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:29:40,357 INFO L255 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-13 15:29:40,362 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:29:40,375 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 15:29:40,442 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 15:29:40,443 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 15:29:40,443 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-13 15:29:40,443 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [40428370] [2024-11-13 15:29:40,443 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [40428370] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 15:29:40,443 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 15:29:40,443 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-13 15:29:40,444 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1677952605] [2024-11-13 15:29:40,444 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 15:29:40,444 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-13 15:29:40,445 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-13 15:29:40,445 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-13 15:29:40,445 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-13 15:29:40,446 INFO L87 Difference]: Start difference. First operand 3254 states and 4359 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 15:29:48,415 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 15:29:48,416 INFO L93 Difference]: Finished difference Result 3720 states and 4675 transitions. [2024-11-13 15:29:48,416 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-13 15:29:48,417 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 15:29:48,417 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 15:29:48,426 INFO L225 Difference]: With dead ends: 3720 [2024-11-13 15:29:48,426 INFO L226 Difference]: Without dead ends: 3720 [2024-11-13 15:29:48,426 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 15:29:48,427 INFO L432 NwaCegarLoop]: 1348 mSDtfsCounter, 2105 mSDsluCounter, 1677 mSDsCounter, 0 mSdLazyCounter, 2341 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2115 SdHoareTripleChecker+Valid, 3025 SdHoareTripleChecker+Invalid, 2372 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 2341 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.8s IncrementalHoareTripleChecker+Time [2024-11-13 15:29:48,428 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2115 Valid, 3025 Invalid, 2372 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [31 Valid, 2341 Invalid, 0 Unknown, 0 Unchecked, 7.8s Time] [2024-11-13 15:29:48,432 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3720 states. [2024-11-13 15:29:48,504 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3720 to 3231. [2024-11-13 15:29:48,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3231 states, 2279 states have (on average 1.8758227292672225) internal successors, (4275), 3212 states have internal predecessors, (4275), 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 15:29:48,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3231 states to 3231 states and 4313 transitions. [2024-11-13 15:29:48,521 INFO L78 Accepts]: Start accepts. Automaton has 3231 states and 4313 transitions. Word has length 11 [2024-11-13 15:29:48,521 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 15:29:48,522 INFO L471 AbstractCegarLoop]: Abstraction has 3231 states and 4313 transitions. [2024-11-13 15:29:48,522 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 15:29:48,522 INFO L276 IsEmpty]: Start isEmpty. Operand 3231 states and 4313 transitions. [2024-11-13 15:29:48,522 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2024-11-13 15:29:48,523 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 15:29:48,523 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 15:29:48,552 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afbd63cc-39ec-4e64-9612-8b06172106ae/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-11-13 15:29:48,723 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afbd63cc-39ec-4e64-9612-8b06172106ae/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:29:48,724 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr639REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 1088 more)] === [2024-11-13 15:29:48,725 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:29:48,725 INFO L85 PathProgramCache]: Analyzing trace with hash -1292249560, now seen corresponding path program 1 times [2024-11-13 15:29:48,726 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-13 15:29:48,726 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2050100501] [2024-11-13 15:29:48,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:29:48,726 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:29:48,726 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afbd63cc-39ec-4e64-9612-8b06172106ae/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:29:48,729 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afbd63cc-39ec-4e64-9612-8b06172106ae/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 15:29:48,732 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afbd63cc-39ec-4e64-9612-8b06172106ae/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-13 15:29:49,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:29:49,039 INFO L255 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-13 15:29:49,042 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:29:49,061 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 15:29:49,061 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 15:29:49,061 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-13 15:29:49,062 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2050100501] [2024-11-13 15:29:49,062 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2050100501] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 15:29:49,062 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 15:29:49,062 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-13 15:29:49,063 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1269609594] [2024-11-13 15:29:49,063 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 15:29:49,063 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-13 15:29:49,063 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-13 15:29:49,066 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-13 15:29:49,066 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 15:29:49,066 INFO L87 Difference]: Start difference. First operand 3231 states and 4313 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 15:29:49,156 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 15:29:49,157 INFO L93 Difference]: Finished difference Result 3183 states and 4251 transitions. [2024-11-13 15:29:49,158 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-13 15:29:49,158 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 15:29:49,158 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 15:29:49,180 INFO L225 Difference]: With dead ends: 3183 [2024-11-13 15:29:49,180 INFO L226 Difference]: Without dead ends: 3183 [2024-11-13 15:29:49,181 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 15:29:49,183 INFO L432 NwaCegarLoop]: 2219 mSDtfsCounter, 61 mSDsluCounter, 2166 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 61 SdHoareTripleChecker+Valid, 4385 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 15:29:49,183 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [61 Valid, 4385 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-13 15:29:49,190 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3183 states. [2024-11-13 15:29:49,243 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3183 to 3183. [2024-11-13 15:29:49,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3183 states, 2243 states have (on average 1.8782880071333037) internal successors, (4213), 3164 states have internal predecessors, (4213), 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 15:29:49,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3183 states to 3183 states and 4251 transitions. [2024-11-13 15:29:49,300 INFO L78 Accepts]: Start accepts. Automaton has 3183 states and 4251 transitions. Word has length 11 [2024-11-13 15:29:49,301 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 15:29:49,301 INFO L471 AbstractCegarLoop]: Abstraction has 3183 states and 4251 transitions. [2024-11-13 15:29:49,301 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 15:29:49,301 INFO L276 IsEmpty]: Start isEmpty. Operand 3183 states and 4251 transitions. [2024-11-13 15:29:49,301 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2024-11-13 15:29:49,302 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 15:29:49,302 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 15:29:49,331 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afbd63cc-39ec-4e64-9612-8b06172106ae/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-13 15:29:49,505 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afbd63cc-39ec-4e64-9612-8b06172106ae/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:29:49,506 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr663REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 1088 more)] === [2024-11-13 15:29:49,510 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:29:49,510 INFO L85 PathProgramCache]: Analyzing trace with hash -606227775, now seen corresponding path program 1 times [2024-11-13 15:29:49,510 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-13 15:29:49,510 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [923513548] [2024-11-13 15:29:49,510 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:29:49,510 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:29:49,511 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afbd63cc-39ec-4e64-9612-8b06172106ae/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:29:49,517 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afbd63cc-39ec-4e64-9612-8b06172106ae/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 15:29:49,527 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afbd63cc-39ec-4e64-9612-8b06172106ae/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-13 15:29:49,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:29:49,819 INFO L255 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-13 15:29:49,821 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:29:49,854 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 15:29:49,855 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 15:29:49,855 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-13 15:29:49,855 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [923513548] [2024-11-13 15:29:49,855 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [923513548] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 15:29:49,855 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 15:29:49,855 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-13 15:29:49,856 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1379182163] [2024-11-13 15:29:49,856 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 15:29:49,856 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-13 15:29:49,856 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-13 15:29:49,857 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-13 15:29:49,857 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-13 15:29:49,857 INFO L87 Difference]: Start difference. First operand 3183 states and 4251 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 15:29:50,016 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 15:29:50,016 INFO L93 Difference]: Finished difference Result 3160 states and 4207 transitions. [2024-11-13 15:29:50,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-13 15:29:50,017 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 15:29:50,017 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 15:29:50,039 INFO L225 Difference]: With dead ends: 3160 [2024-11-13 15:29:50,043 INFO L226 Difference]: Without dead ends: 3160 [2024-11-13 15:29:50,043 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 15:29:50,044 INFO L432 NwaCegarLoop]: 2181 mSDtfsCounter, 45 mSDsluCounter, 4339 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 6520 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 15:29:50,045 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [45 Valid, 6520 Invalid, 59 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-13 15:29:50,052 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3160 states. [2024-11-13 15:29:50,134 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3160 to 3160. [2024-11-13 15:29:50,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3160 states, 2227 states have (on average 1.8720251459362371) internal successors, (4169), 3141 states have internal predecessors, (4169), 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 15:29:50,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3160 states to 3160 states and 4207 transitions. [2024-11-13 15:29:50,160 INFO L78 Accepts]: Start accepts. Automaton has 3160 states and 4207 transitions. Word has length 13 [2024-11-13 15:29:50,161 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 15:29:50,161 INFO L471 AbstractCegarLoop]: Abstraction has 3160 states and 4207 transitions. [2024-11-13 15:29:50,161 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 15:29:50,161 INFO L276 IsEmpty]: Start isEmpty. Operand 3160 states and 4207 transitions. [2024-11-13 15:29:50,162 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2024-11-13 15:29:50,162 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 15:29:50,162 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 15:29:50,193 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afbd63cc-39ec-4e64-9612-8b06172106ae/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-11-13 15:29:50,363 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afbd63cc-39ec-4e64-9612-8b06172106ae/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:29:50,363 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr16REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 1088 more)] === [2024-11-13 15:29:50,364 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:29:50,364 INFO L85 PathProgramCache]: Analyzing trace with hash -286362881, now seen corresponding path program 1 times [2024-11-13 15:29:50,364 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-13 15:29:50,364 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1507524365] [2024-11-13 15:29:50,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:29:50,365 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:29:50,365 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afbd63cc-39ec-4e64-9612-8b06172106ae/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:29:50,368 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afbd63cc-39ec-4e64-9612-8b06172106ae/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 15:29:50,369 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afbd63cc-39ec-4e64-9612-8b06172106ae/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-13 15:29:50,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:29:50,721 INFO L255 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-13 15:29:50,726 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:29:50,862 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 15:29:50,862 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 15:29:50,862 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-13 15:29:50,864 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1507524365] [2024-11-13 15:29:50,864 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1507524365] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 15:29:50,864 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 15:29:50,864 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-13 15:29:50,865 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1598343941] [2024-11-13 15:29:50,865 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 15:29:50,865 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-13 15:29:50,865 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-13 15:29:50,866 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-13 15:29:50,866 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-13 15:29:50,866 INFO L87 Difference]: Start difference. First operand 3160 states and 4207 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 15:29:59,370 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 15:29:59,370 INFO L93 Difference]: Finished difference Result 3881 states and 4978 transitions. [2024-11-13 15:29:59,371 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-13 15:29:59,371 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 15:29:59,371 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 15:29:59,382 INFO L225 Difference]: With dead ends: 3881 [2024-11-13 15:29:59,382 INFO L226 Difference]: Without dead ends: 3881 [2024-11-13 15:29:59,383 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 15:29:59,384 INFO L432 NwaCegarLoop]: 2078 mSDtfsCounter, 1885 mSDsluCounter, 2233 mSDsCounter, 0 mSdLazyCounter, 2727 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1895 SdHoareTripleChecker+Valid, 4311 SdHoareTripleChecker+Invalid, 2759 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 2727 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.3s IncrementalHoareTripleChecker+Time [2024-11-13 15:29:59,384 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1895 Valid, 4311 Invalid, 2759 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 2727 Invalid, 0 Unknown, 0 Unchecked, 8.3s Time] [2024-11-13 15:29:59,389 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3881 states. [2024-11-13 15:29:59,433 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3881 to 3137. [2024-11-13 15:29:59,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3137 states, 2227 states have (on average 1.85136955545577) internal successors, (4123), 3118 states have internal predecessors, (4123), 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 15:29:59,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3137 states to 3137 states and 4161 transitions. [2024-11-13 15:29:59,448 INFO L78 Accepts]: Start accepts. Automaton has 3137 states and 4161 transitions. Word has length 20 [2024-11-13 15:29:59,448 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 15:29:59,448 INFO L471 AbstractCegarLoop]: Abstraction has 3137 states and 4161 transitions. [2024-11-13 15:29:59,448 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 15:29:59,448 INFO L276 IsEmpty]: Start isEmpty. Operand 3137 states and 4161 transitions. [2024-11-13 15:29:59,449 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2024-11-13 15:29:59,449 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 15:29:59,449 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 15:29:59,478 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afbd63cc-39ec-4e64-9612-8b06172106ae/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-11-13 15:29:59,652 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afbd63cc-39ec-4e64-9612-8b06172106ae/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:29:59,653 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr17REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 1088 more)] === [2024-11-13 15:29:59,654 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:29:59,655 INFO L85 PathProgramCache]: Analyzing trace with hash -286362880, now seen corresponding path program 1 times [2024-11-13 15:29:59,655 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-13 15:29:59,655 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [435261449] [2024-11-13 15:29:59,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:29:59,656 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:29:59,656 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afbd63cc-39ec-4e64-9612-8b06172106ae/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:29:59,659 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afbd63cc-39ec-4e64-9612-8b06172106ae/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 15:29:59,661 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afbd63cc-39ec-4e64-9612-8b06172106ae/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-13 15:29:59,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:30:00,002 INFO L255 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-13 15:30:00,004 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:30:00,028 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 15:30:00,028 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 15:30:00,028 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-13 15:30:00,029 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [435261449] [2024-11-13 15:30:00,029 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [435261449] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 15:30:00,029 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 15:30:00,029 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-13 15:30:00,029 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [27856269] [2024-11-13 15:30:00,029 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 15:30:00,030 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-13 15:30:00,030 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-13 15:30:00,031 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-13 15:30:00,031 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 15:30:00,032 INFO L87 Difference]: Start difference. First operand 3137 states and 4161 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 15:30:00,117 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 15:30:00,117 INFO L93 Difference]: Finished difference Result 3089 states and 4099 transitions. [2024-11-13 15:30:00,118 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-13 15:30:00,118 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 15:30:00,118 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 15:30:00,136 INFO L225 Difference]: With dead ends: 3089 [2024-11-13 15:30:00,138 INFO L226 Difference]: Without dead ends: 3089 [2024-11-13 15:30:00,139 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 15:30:00,140 INFO L432 NwaCegarLoop]: 2137 mSDtfsCounter, 61 mSDsluCounter, 2084 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 61 SdHoareTripleChecker+Valid, 4221 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 15:30:00,140 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [61 Valid, 4221 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-13 15:30:00,147 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3089 states. [2024-11-13 15:30:00,186 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3089 to 3089. [2024-11-13 15:30:00,191 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3089 states, 2191 states have (on average 1.8534915563669556) internal successors, (4061), 3070 states have internal predecessors, (4061), 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 15:30:00,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3089 states to 3089 states and 4099 transitions. [2024-11-13 15:30:00,202 INFO L78 Accepts]: Start accepts. Automaton has 3089 states and 4099 transitions. Word has length 20 [2024-11-13 15:30:00,202 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 15:30:00,202 INFO L471 AbstractCegarLoop]: Abstraction has 3089 states and 4099 transitions. [2024-11-13 15:30:00,202 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 15:30:00,202 INFO L276 IsEmpty]: Start isEmpty. Operand 3089 states and 4099 transitions. [2024-11-13 15:30:00,203 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2024-11-13 15:30:00,205 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 15:30:00,205 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 15:30:00,235 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afbd63cc-39ec-4e64-9612-8b06172106ae/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-11-13 15:30:00,406 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afbd63cc-39ec-4e64-9612-8b06172106ae/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:30:00,406 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr324REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 1088 more)] === [2024-11-13 15:30:00,407 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:30:00,407 INFO L85 PathProgramCache]: Analyzing trace with hash -910229057, now seen corresponding path program 1 times [2024-11-13 15:30:00,407 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-13 15:30:00,407 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1071914966] [2024-11-13 15:30:00,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:30:00,408 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:30:00,408 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afbd63cc-39ec-4e64-9612-8b06172106ae/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:30:00,411 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afbd63cc-39ec-4e64-9612-8b06172106ae/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 15:30:00,414 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afbd63cc-39ec-4e64-9612-8b06172106ae/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-13 15:30:00,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:30:00,905 INFO L255 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-13 15:30:00,912 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:30:00,994 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 15:30:00,994 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 15:30:00,995 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-13 15:30:00,995 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1071914966] [2024-11-13 15:30:00,995 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1071914966] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 15:30:00,995 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 15:30:00,995 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-13 15:30:00,996 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [219450766] [2024-11-13 15:30:00,996 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 15:30:00,996 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-13 15:30:00,996 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-13 15:30:00,997 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-13 15:30:00,997 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-13 15:30:00,997 INFO L87 Difference]: Start difference. First operand 3089 states and 4099 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 15:30:08,890 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 15:30:08,891 INFO L93 Difference]: Finished difference Result 3818 states and 4832 transitions. [2024-11-13 15:30:08,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-13 15:30:08,891 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 15:30:08,892 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 15:30:08,903 INFO L225 Difference]: With dead ends: 3818 [2024-11-13 15:30:08,903 INFO L226 Difference]: Without dead ends: 3818 [2024-11-13 15:30:08,904 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 15:30:08,940 INFO L432 NwaCegarLoop]: 2059 mSDtfsCounter, 1831 mSDsluCounter, 2214 mSDsCounter, 0 mSdLazyCounter, 2657 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1841 SdHoareTripleChecker+Valid, 4273 SdHoareTripleChecker+Invalid, 2689 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 2657 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.7s IncrementalHoareTripleChecker+Time [2024-11-13 15:30:08,940 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1841 Valid, 4273 Invalid, 2689 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 2657 Invalid, 0 Unknown, 0 Unchecked, 7.7s Time] [2024-11-13 15:30:08,949 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3818 states. [2024-11-13 15:30:08,992 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3818 to 3066. [2024-11-13 15:30:08,997 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3066 states, 2191 states have (on average 1.8115015974440896) internal successors, (3969), 3047 states have internal predecessors, (3969), 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 15:30:09,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3066 states to 3066 states and 4007 transitions. [2024-11-13 15:30:09,009 INFO L78 Accepts]: Start accepts. Automaton has 3066 states and 4007 transitions. Word has length 20 [2024-11-13 15:30:09,009 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 15:30:09,009 INFO L471 AbstractCegarLoop]: Abstraction has 3066 states and 4007 transitions. [2024-11-13 15:30:09,009 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 15:30:09,010 INFO L276 IsEmpty]: Start isEmpty. Operand 3066 states and 4007 transitions. [2024-11-13 15:30:09,014 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2024-11-13 15:30:09,015 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 15:30:09,015 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 15:30:09,046 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afbd63cc-39ec-4e64-9612-8b06172106ae/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-11-13 15:30:09,219 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afbd63cc-39ec-4e64-9612-8b06172106ae/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:30:09,220 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr325REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 1088 more)] === [2024-11-13 15:30:09,221 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:30:09,221 INFO L85 PathProgramCache]: Analyzing trace with hash -910229056, now seen corresponding path program 1 times [2024-11-13 15:30:09,222 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-13 15:30:09,222 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1501212446] [2024-11-13 15:30:09,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:30:09,223 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:30:09,223 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afbd63cc-39ec-4e64-9612-8b06172106ae/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:30:09,226 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afbd63cc-39ec-4e64-9612-8b06172106ae/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 15:30:09,231 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afbd63cc-39ec-4e64-9612-8b06172106ae/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-11-13 15:30:09,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:30:09,589 INFO L255 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-13 15:30:09,592 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:30:09,604 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 15:30:09,605 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 15:30:09,605 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-13 15:30:09,605 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1501212446] [2024-11-13 15:30:09,605 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1501212446] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 15:30:09,605 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 15:30:09,605 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-13 15:30:09,605 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [829602383] [2024-11-13 15:30:09,605 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 15:30:09,606 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-13 15:30:09,606 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-13 15:30:09,606 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-13 15:30:09,606 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 15:30:09,606 INFO L87 Difference]: Start difference. First operand 3066 states and 4007 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 15:30:09,677 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 15:30:09,677 INFO L93 Difference]: Finished difference Result 2982 states and 3883 transitions. [2024-11-13 15:30:09,678 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-13 15:30:09,679 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 15:30:09,681 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 15:30:09,695 INFO L225 Difference]: With dead ends: 2982 [2024-11-13 15:30:09,695 INFO L226 Difference]: Without dead ends: 2982 [2024-11-13 15:30:09,696 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 15:30:09,697 INFO L432 NwaCegarLoop]: 2083 mSDtfsCounter, 61 mSDsluCounter, 2030 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 61 SdHoareTripleChecker+Valid, 4113 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 15:30:09,697 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [61 Valid, 4113 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-13 15:30:09,702 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2982 states. [2024-11-13 15:30:09,735 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2982 to 2982. [2024-11-13 15:30:09,739 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2982 states, 2119 states have (on average 1.8145351580934403) internal successors, (3845), 2963 states have internal predecessors, (3845), 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 15:30:09,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2982 states to 2982 states and 3883 transitions. [2024-11-13 15:30:09,771 INFO L78 Accepts]: Start accepts. Automaton has 2982 states and 3883 transitions. Word has length 20 [2024-11-13 15:30:09,771 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 15:30:09,771 INFO L471 AbstractCegarLoop]: Abstraction has 2982 states and 3883 transitions. [2024-11-13 15:30:09,771 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 15:30:09,772 INFO L276 IsEmpty]: Start isEmpty. Operand 2982 states and 3883 transitions. [2024-11-13 15:30:09,772 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2024-11-13 15:30:09,772 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 15:30:09,773 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 15:30:09,802 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afbd63cc-39ec-4e64-9612-8b06172106ae/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2024-11-13 15:30:09,985 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afbd63cc-39ec-4e64-9612-8b06172106ae/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:30:09,986 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr41REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 1088 more)] === [2024-11-13 15:30:09,987 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:30:09,987 INFO L85 PathProgramCache]: Analyzing trace with hash -316824679, now seen corresponding path program 1 times [2024-11-13 15:30:09,987 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-13 15:30:09,987 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [263308898] [2024-11-13 15:30:09,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:30:09,988 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:30:09,988 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afbd63cc-39ec-4e64-9612-8b06172106ae/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:30:09,995 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afbd63cc-39ec-4e64-9612-8b06172106ae/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 15:30:10,000 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afbd63cc-39ec-4e64-9612-8b06172106ae/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-11-13 15:30:10,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:30:10,407 INFO L255 TraceCheckSpWp]: Trace formula consists of 142 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-13 15:30:10,411 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:30:10,446 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 15:30:10,446 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 15:30:10,447 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-13 15:30:10,447 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [263308898] [2024-11-13 15:30:10,447 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [263308898] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 15:30:10,447 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 15:30:10,447 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-13 15:30:10,448 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1871178276] [2024-11-13 15:30:10,448 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 15:30:10,448 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-13 15:30:10,448 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-13 15:30:10,449 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-13 15:30:10,449 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-13 15:30:10,449 INFO L87 Difference]: Start difference. First operand 2982 states and 3883 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 15:30:10,616 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 15:30:10,617 INFO L93 Difference]: Finished difference Result 2959 states and 3839 transitions. [2024-11-13 15:30:10,617 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-13 15:30:10,618 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 15:30:10,618 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 15:30:10,626 INFO L225 Difference]: With dead ends: 2959 [2024-11-13 15:30:10,627 INFO L226 Difference]: Without dead ends: 2959 [2024-11-13 15:30:10,627 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 15:30:10,628 INFO L432 NwaCegarLoop]: 2045 mSDtfsCounter, 45 mSDsluCounter, 4067 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 6112 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 15:30:10,628 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [45 Valid, 6112 Invalid, 59 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-13 15:30:10,633 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2959 states. [2024-11-13 15:30:10,668 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2959 to 2959. [2024-11-13 15:30:10,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2959 states, 2103 states have (on average 1.8074179743223966) internal successors, (3801), 2940 states have internal predecessors, (3801), 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 15:30:10,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2959 states to 2959 states and 3839 transitions. [2024-11-13 15:30:10,680 INFO L78 Accepts]: Start accepts. Automaton has 2959 states and 3839 transitions. Word has length 22 [2024-11-13 15:30:10,680 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 15:30:10,680 INFO L471 AbstractCegarLoop]: Abstraction has 2959 states and 3839 transitions. [2024-11-13 15:30:10,681 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 15:30:10,681 INFO L276 IsEmpty]: Start isEmpty. Operand 2959 states and 3839 transitions. [2024-11-13 15:30:10,681 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2024-11-13 15:30:10,682 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 15:30:10,682 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 15:30:10,713 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afbd63cc-39ec-4e64-9612-8b06172106ae/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2024-11-13 15:30:10,886 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afbd63cc-39ec-4e64-9612-8b06172106ae/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:30:10,887 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr349REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 1088 more)] === [2024-11-13 15:30:10,887 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:30:10,887 INFO L85 PathProgramCache]: Analyzing trace with hash 1443228825, now seen corresponding path program 1 times [2024-11-13 15:30:10,888 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-13 15:30:10,888 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1167399334] [2024-11-13 15:30:10,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:30:10,888 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:30:10,888 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afbd63cc-39ec-4e64-9612-8b06172106ae/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:30:10,891 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afbd63cc-39ec-4e64-9612-8b06172106ae/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 15:30:10,895 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afbd63cc-39ec-4e64-9612-8b06172106ae/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-11-13 15:30:11,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:30:11,265 INFO L255 TraceCheckSpWp]: Trace formula consists of 142 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-13 15:30:11,268 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:30:11,308 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 15:30:11,308 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 15:30:11,309 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-13 15:30:11,309 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1167399334] [2024-11-13 15:30:11,309 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1167399334] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 15:30:11,309 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 15:30:11,309 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-13 15:30:11,309 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [909505991] [2024-11-13 15:30:11,310 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 15:30:11,310 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-13 15:30:11,310 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-13 15:30:11,311 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-13 15:30:11,311 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-13 15:30:11,311 INFO L87 Difference]: Start difference. First operand 2959 states and 3839 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 15:30:11,481 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 15:30:11,482 INFO L93 Difference]: Finished difference Result 2920 states and 3751 transitions. [2024-11-13 15:30:11,482 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-13 15:30:11,483 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 15:30:11,483 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 15:30:11,490 INFO L225 Difference]: With dead ends: 2920 [2024-11-13 15:30:11,490 INFO L226 Difference]: Without dead ends: 2920 [2024-11-13 15:30:11,491 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 15:30:11,491 INFO L432 NwaCegarLoop]: 2017 mSDtfsCounter, 45 mSDsluCounter, 4011 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 6028 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 15:30:11,492 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [45 Valid, 6028 Invalid, 59 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-13 15:30:11,496 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2920 states. [2024-11-13 15:30:11,531 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2920 to 2920. [2024-11-13 15:30:11,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2920 states, 2071 states have (on average 1.7928536938676967) internal successors, (3713), 2901 states have internal predecessors, (3713), 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 15:30:11,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2920 states to 2920 states and 3751 transitions. [2024-11-13 15:30:11,542 INFO L78 Accepts]: Start accepts. Automaton has 2920 states and 3751 transitions. Word has length 22 [2024-11-13 15:30:11,542 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 15:30:11,542 INFO L471 AbstractCegarLoop]: Abstraction has 2920 states and 3751 transitions. [2024-11-13 15:30:11,542 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 15:30:11,543 INFO L276 IsEmpty]: Start isEmpty. Operand 2920 states and 3751 transitions. [2024-11-13 15:30:11,543 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2024-11-13 15:30:11,543 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 15:30:11,543 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 15:30:11,574 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afbd63cc-39ec-4e64-9612-8b06172106ae/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2024-11-13 15:30:11,744 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afbd63cc-39ec-4e64-9612-8b06172106ae/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:30:11,744 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr677REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 1088 more)] === [2024-11-13 15:30:11,745 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:30:11,745 INFO L85 PathProgramCache]: Analyzing trace with hash -1622026001, now seen corresponding path program 1 times [2024-11-13 15:30:11,745 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-13 15:30:11,745 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1933750606] [2024-11-13 15:30:11,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:30:11,745 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:30:11,746 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afbd63cc-39ec-4e64-9612-8b06172106ae/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:30:11,748 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afbd63cc-39ec-4e64-9612-8b06172106ae/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 15:30:11,749 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afbd63cc-39ec-4e64-9612-8b06172106ae/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-11-13 15:30:12,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:30:12,043 INFO L255 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-13 15:30:12,046 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:30:12,054 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2024-11-13 15:30:12,463 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 15:30:12,463 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 15:30:12,463 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-13 15:30:12,463 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1933750606] [2024-11-13 15:30:12,464 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1933750606] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 15:30:12,464 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 15:30:12,464 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-13 15:30:12,464 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1635465604] [2024-11-13 15:30:12,464 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 15:30:12,464 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-13 15:30:12,464 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-13 15:30:12,465 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-13 15:30:12,465 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-13 15:30:12,465 INFO L87 Difference]: Start difference. First operand 2920 states and 3751 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 15:30:22,116 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 15:30:22,117 INFO L93 Difference]: Finished difference Result 3654 states and 4557 transitions. [2024-11-13 15:30:22,117 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-13 15:30:22,117 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 15:30:22,118 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 15:30:22,126 INFO L225 Difference]: With dead ends: 3654 [2024-11-13 15:30:22,126 INFO L226 Difference]: Without dead ends: 3654 [2024-11-13 15:30:22,126 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 15:30:22,127 INFO L432 NwaCegarLoop]: 1732 mSDtfsCounter, 806 mSDsluCounter, 2164 mSDsCounter, 0 mSdLazyCounter, 2219 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 809 SdHoareTripleChecker+Valid, 3896 SdHoareTripleChecker+Invalid, 2222 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 2219 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.5s IncrementalHoareTripleChecker+Time [2024-11-13 15:30:22,128 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [809 Valid, 3896 Invalid, 2222 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 2219 Invalid, 0 Unknown, 0 Unchecked, 9.5s Time] [2024-11-13 15:30:22,133 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3654 states. [2024-11-13 15:30:22,174 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3654 to 2956. [2024-11-13 15:30:22,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2956 states, 2107 states have (on average 1.7816801139060274) internal successors, (3754), 2937 states have internal predecessors, (3754), 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 15:30:22,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2956 states to 2956 states and 3792 transitions. [2024-11-13 15:30:22,184 INFO L78 Accepts]: Start accepts. Automaton has 2956 states and 3792 transitions. Word has length 27 [2024-11-13 15:30:22,185 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 15:30:22,185 INFO L471 AbstractCegarLoop]: Abstraction has 2956 states and 3792 transitions. [2024-11-13 15:30:22,185 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 15:30:22,185 INFO L276 IsEmpty]: Start isEmpty. Operand 2956 states and 3792 transitions. [2024-11-13 15:30:22,185 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2024-11-13 15:30:22,185 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 15:30:22,186 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 15:30:22,211 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afbd63cc-39ec-4e64-9612-8b06172106ae/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2024-11-13 15:30:22,389 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afbd63cc-39ec-4e64-9612-8b06172106ae/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:30:22,390 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr55REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 1088 more)] === [2024-11-13 15:30:22,390 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:30:22,390 INFO L85 PathProgramCache]: Analyzing trace with hash 1897207239, now seen corresponding path program 1 times [2024-11-13 15:30:22,391 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-13 15:30:22,391 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [429197260] [2024-11-13 15:30:22,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:30:22,391 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:30:22,391 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afbd63cc-39ec-4e64-9612-8b06172106ae/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:30:22,395 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afbd63cc-39ec-4e64-9612-8b06172106ae/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 15:30:22,398 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afbd63cc-39ec-4e64-9612-8b06172106ae/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2024-11-13 15:30:22,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:30:22,760 INFO L255 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-13 15:30:22,763 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:30:22,785 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 15:30:23,116 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 15:30:23,117 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 15:30:23,117 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-13 15:30:23,117 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [429197260] [2024-11-13 15:30:23,117 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [429197260] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 15:30:23,117 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 15:30:23,117 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-13 15:30:23,117 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [13118376] [2024-11-13 15:30:23,117 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 15:30:23,119 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-13 15:30:23,119 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-13 15:30:23,120 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-13 15:30:23,120 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-13 15:30:23,120 INFO L87 Difference]: Start difference. First operand 2956 states and 3792 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 15:30:33,989 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 15:30:33,989 INFO L93 Difference]: Finished difference Result 4233 states and 5395 transitions. [2024-11-13 15:30:33,990 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-13 15:30:33,990 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 15:30:33,990 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 15:30:33,997 INFO L225 Difference]: With dead ends: 4233 [2024-11-13 15:30:33,997 INFO L226 Difference]: Without dead ends: 4233 [2024-11-13 15:30:33,998 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 33 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 15:30:33,999 INFO L432 NwaCegarLoop]: 2358 mSDtfsCounter, 1186 mSDsluCounter, 2574 mSDsCounter, 0 mSdLazyCounter, 2649 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1190 SdHoareTripleChecker+Valid, 4932 SdHoareTripleChecker+Invalid, 2652 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 2649 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.7s IncrementalHoareTripleChecker+Time [2024-11-13 15:30:33,999 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1190 Valid, 4932 Invalid, 2652 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 2649 Invalid, 0 Unknown, 0 Unchecked, 10.7s Time] [2024-11-13 15:30:34,003 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4233 states. [2024-11-13 15:30:34,037 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4233 to 2952. [2024-11-13 15:30:34,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2952 states, 2107 states have (on average 1.7778832463217846) internal successors, (3746), 2933 states have internal predecessors, (3746), 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 15:30:34,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2952 states to 2952 states and 3784 transitions. [2024-11-13 15:30:34,048 INFO L78 Accepts]: Start accepts. Automaton has 2952 states and 3784 transitions. Word has length 36 [2024-11-13 15:30:34,048 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 15:30:34,049 INFO L471 AbstractCegarLoop]: Abstraction has 2952 states and 3784 transitions. [2024-11-13 15:30:34,049 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 15:30:34,049 INFO L276 IsEmpty]: Start isEmpty. Operand 2952 states and 3784 transitions. [2024-11-13 15:30:34,050 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2024-11-13 15:30:34,051 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 15:30:34,051 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 15:30:34,083 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afbd63cc-39ec-4e64-9612-8b06172106ae/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2024-11-13 15:30:34,252 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afbd63cc-39ec-4e64-9612-8b06172106ae/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:30:34,253 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr363REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 1088 more)] === [2024-11-13 15:30:34,254 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:30:34,255 INFO L85 PathProgramCache]: Analyzing trace with hash 1374140039, now seen corresponding path program 1 times [2024-11-13 15:30:34,255 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-13 15:30:34,256 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [709622238] [2024-11-13 15:30:34,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:30:34,256 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:30:34,256 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afbd63cc-39ec-4e64-9612-8b06172106ae/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:30:34,259 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afbd63cc-39ec-4e64-9612-8b06172106ae/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 15:30:34,262 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afbd63cc-39ec-4e64-9612-8b06172106ae/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2024-11-13 15:30:34,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:30:34,604 INFO L255 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-13 15:30:34,608 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:30:34,621 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 15:30:34,980 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 15:30:34,980 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 15:30:34,980 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-13 15:30:34,981 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [709622238] [2024-11-13 15:30:34,981 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [709622238] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 15:30:34,981 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 15:30:34,981 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-13 15:30:34,981 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2137123979] [2024-11-13 15:30:34,982 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 15:30:34,982 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-13 15:30:34,982 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-13 15:30:34,983 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-13 15:30:34,983 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-13 15:30:34,983 INFO L87 Difference]: Start difference. First operand 2952 states and 3784 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 15:30:45,568 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 15:30:45,569 INFO L93 Difference]: Finished difference Result 4229 states and 5387 transitions. [2024-11-13 15:30:45,569 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-13 15:30:45,569 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 15:30:45,570 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 15:30:45,574 INFO L225 Difference]: With dead ends: 4229 [2024-11-13 15:30:45,574 INFO L226 Difference]: Without dead ends: 4229 [2024-11-13 15:30:45,574 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 15:30:45,575 INFO L432 NwaCegarLoop]: 2364 mSDtfsCounter, 1182 mSDsluCounter, 2604 mSDsCounter, 0 mSdLazyCounter, 2651 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1186 SdHoareTripleChecker+Valid, 4968 SdHoareTripleChecker+Invalid, 2654 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 2651 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.4s IncrementalHoareTripleChecker+Time [2024-11-13 15:30:45,576 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1186 Valid, 4968 Invalid, 2654 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 2651 Invalid, 0 Unknown, 0 Unchecked, 10.4s Time] [2024-11-13 15:30:45,579 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4229 states. [2024-11-13 15:30:45,615 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4229 to 2952. [2024-11-13 15:30:45,619 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2952 states, 2107 states have (on average 1.7740863787375416) internal successors, (3738), 2933 states have internal predecessors, (3738), 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 15:30:45,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2952 states to 2952 states and 3776 transitions. [2024-11-13 15:30:45,627 INFO L78 Accepts]: Start accepts. Automaton has 2952 states and 3776 transitions. Word has length 36 [2024-11-13 15:30:45,627 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 15:30:45,627 INFO L471 AbstractCegarLoop]: Abstraction has 2952 states and 3776 transitions. [2024-11-13 15:30:45,628 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 15:30:45,628 INFO L276 IsEmpty]: Start isEmpty. Operand 2952 states and 3776 transitions. [2024-11-13 15:30:45,628 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2024-11-13 15:30:45,629 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 15:30:45,629 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 15:30:45,660 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afbd63cc-39ec-4e64-9612-8b06172106ae/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2024-11-13 15:30:45,829 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afbd63cc-39ec-4e64-9612-8b06172106ae/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:30:45,830 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr684REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 1088 more)] === [2024-11-13 15:30:45,831 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:30:45,831 INFO L85 PathProgramCache]: Analyzing trace with hash -1632603066, now seen corresponding path program 1 times [2024-11-13 15:30:45,831 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-13 15:30:45,832 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1662838433] [2024-11-13 15:30:45,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:30:45,832 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:30:45,832 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afbd63cc-39ec-4e64-9612-8b06172106ae/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:30:45,835 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afbd63cc-39ec-4e64-9612-8b06172106ae/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 15:30:45,837 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afbd63cc-39ec-4e64-9612-8b06172106ae/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2024-11-13 15:30:46,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:30:46,217 INFO L255 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-13 15:30:46,220 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:30:46,673 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 15:30:46,673 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 15:30:46,673 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-13 15:30:46,673 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1662838433] [2024-11-13 15:30:46,674 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1662838433] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 15:30:46,674 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 15:30:46,674 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-13 15:30:46,674 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1896418570] [2024-11-13 15:30:46,674 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 15:30:46,675 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-13 15:30:46,675 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-13 15:30:46,675 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-13 15:30:46,678 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 15:30:46,679 INFO L87 Difference]: Start difference. First operand 2952 states and 3776 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 15:30:47,281 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 15:30:47,281 INFO L93 Difference]: Finished difference Result 4159 states and 4988 transitions. [2024-11-13 15:30:47,282 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-13 15:30:47,282 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 15:30:47,283 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 15:30:47,290 INFO L225 Difference]: With dead ends: 4159 [2024-11-13 15:30:47,290 INFO L226 Difference]: Without dead ends: 4159 [2024-11-13 15:30:47,290 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 15:30:47,291 INFO L432 NwaCegarLoop]: 2102 mSDtfsCounter, 1318 mSDsluCounter, 1934 mSDsCounter, 0 mSdLazyCounter, 138 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1325 SdHoareTripleChecker+Valid, 4036 SdHoareTripleChecker+Invalid, 145 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 138 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-13 15:30:47,291 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1325 Valid, 4036 Invalid, 145 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 138 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-13 15:30:47,297 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4159 states. [2024-11-13 15:30:47,348 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4159 to 3505. [2024-11-13 15:30:47,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3505 states, 2656 states have (on average 1.7631777108433735) internal successors, (4683), 3479 states have internal predecessors, (4683), 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 15:30:47,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3505 states to 3505 states and 4735 transitions. [2024-11-13 15:30:47,364 INFO L78 Accepts]: Start accepts. Automaton has 3505 states and 4735 transitions. Word has length 41 [2024-11-13 15:30:47,365 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 15:30:47,365 INFO L471 AbstractCegarLoop]: Abstraction has 3505 states and 4735 transitions. [2024-11-13 15:30:47,365 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 15:30:47,365 INFO L276 IsEmpty]: Start isEmpty. Operand 3505 states and 4735 transitions. [2024-11-13 15:30:47,366 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2024-11-13 15:30:47,366 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 15:30:47,367 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 15:30:47,401 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afbd63cc-39ec-4e64-9612-8b06172106ae/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2024-11-13 15:30:47,567 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afbd63cc-39ec-4e64-9612-8b06172106ae/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:30:47,567 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 1088 more)] === [2024-11-13 15:30:47,570 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:30:47,570 INFO L85 PathProgramCache]: Analyzing trace with hash 1985409508, now seen corresponding path program 1 times [2024-11-13 15:30:47,570 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-13 15:30:47,571 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [645142921] [2024-11-13 15:30:47,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:30:47,571 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:30:47,571 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afbd63cc-39ec-4e64-9612-8b06172106ae/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:30:47,574 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afbd63cc-39ec-4e64-9612-8b06172106ae/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 15:30:47,578 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afbd63cc-39ec-4e64-9612-8b06172106ae/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2024-11-13 15:30:47,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:30:47,973 INFO L255 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-13 15:30:47,976 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:30:48,069 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 15:30:48,069 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 15:30:48,069 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-13 15:30:48,069 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [645142921] [2024-11-13 15:30:48,070 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [645142921] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 15:30:48,070 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 15:30:48,070 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-13 15:30:48,070 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [197092393] [2024-11-13 15:30:48,070 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 15:30:48,072 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-13 15:30:48,072 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-13 15:30:48,073 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-13 15:30:48,073 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-13 15:30:48,074 INFO L87 Difference]: Start difference. First operand 3505 states and 4735 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 15:30:48,203 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 15:30:48,203 INFO L93 Difference]: Finished difference Result 3487 states and 4701 transitions. [2024-11-13 15:30:48,204 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-13 15:30:48,204 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 15:30:48,204 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 15:30:48,209 INFO L225 Difference]: With dead ends: 3487 [2024-11-13 15:30:48,209 INFO L226 Difference]: Without dead ends: 3487 [2024-11-13 15:30:48,209 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 15:30:48,210 INFO L432 NwaCegarLoop]: 2015 mSDtfsCounter, 27 mSDsluCounter, 3993 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 6008 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 15:30:48,210 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [27 Valid, 6008 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-13 15:30:48,213 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3487 states. [2024-11-13 15:30:48,244 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3487 to 3487. [2024-11-13 15:30:48,248 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3487 states, 2638 states have (on average 1.762319939347991) internal successors, (4649), 3461 states have internal predecessors, (4649), 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 15:30:48,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3487 states to 3487 states and 4701 transitions. [2024-11-13 15:30:48,255 INFO L78 Accepts]: Start accepts. Automaton has 3487 states and 4701 transitions. Word has length 52 [2024-11-13 15:30:48,255 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 15:30:48,255 INFO L471 AbstractCegarLoop]: Abstraction has 3487 states and 4701 transitions. [2024-11-13 15:30:48,255 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 15:30:48,255 INFO L276 IsEmpty]: Start isEmpty. Operand 3487 states and 4701 transitions. [2024-11-13 15:30:48,256 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2024-11-13 15:30:48,256 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 15:30:48,256 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 15:30:48,278 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afbd63cc-39ec-4e64-9612-8b06172106ae/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2024-11-13 15:30:48,456 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afbd63cc-39ec-4e64-9612-8b06172106ae/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:30:48,457 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr427REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 1088 more)] === [2024-11-13 15:30:48,457 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:30:48,457 INFO L85 PathProgramCache]: Analyzing trace with hash 2133332190, now seen corresponding path program 1 times [2024-11-13 15:30:48,458 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-13 15:30:48,458 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1401029503] [2024-11-13 15:30:48,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:30:48,458 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:30:48,458 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afbd63cc-39ec-4e64-9612-8b06172106ae/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:30:48,461 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afbd63cc-39ec-4e64-9612-8b06172106ae/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 15:30:48,462 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afbd63cc-39ec-4e64-9612-8b06172106ae/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2024-11-13 15:30:48,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:30:48,860 INFO L255 TraceCheckSpWp]: Trace formula consists of 228 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-13 15:30:48,864 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:30:49,349 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 15:30:49,349 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 15:30:49,350 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-13 15:30:49,350 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1401029503] [2024-11-13 15:30:49,350 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1401029503] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 15:30:49,350 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 15:30:49,350 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-13 15:30:49,351 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1056761948] [2024-11-13 15:30:49,351 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 15:30:49,351 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-13 15:30:49,351 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-13 15:30:49,352 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-13 15:30:49,352 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 15:30:49,353 INFO L87 Difference]: Start difference. First operand 3487 states and 4701 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 15:30:49,725 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 15:30:49,725 INFO L93 Difference]: Finished difference Result 4600 states and 5818 transitions. [2024-11-13 15:30:49,726 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-13 15:30:49,727 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 15:30:49,727 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 15:30:49,735 INFO L225 Difference]: With dead ends: 4600 [2024-11-13 15:30:49,736 INFO L226 Difference]: Without dead ends: 4600 [2024-11-13 15:30:49,736 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 15:30:49,738 INFO L432 NwaCegarLoop]: 2110 mSDtfsCounter, 1205 mSDsluCounter, 1968 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1212 SdHoareTripleChecker+Valid, 4078 SdHoareTripleChecker+Invalid, 66 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-13 15:30:49,738 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1212 Valid, 4078 Invalid, 66 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-13 15:30:49,745 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4600 states. [2024-11-13 15:30:49,816 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4600 to 4015. [2024-11-13 15:30:49,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4015 states, 3162 states have (on average 1.7466793168880455) internal successors, (5523), 3982 states have internal predecessors, (5523), 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 15:30:49,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4015 states to 4015 states and 5589 transitions. [2024-11-13 15:30:49,831 INFO L78 Accepts]: Start accepts. Automaton has 4015 states and 5589 transitions. Word has length 52 [2024-11-13 15:30:49,831 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 15:30:49,832 INFO L471 AbstractCegarLoop]: Abstraction has 4015 states and 5589 transitions. [2024-11-13 15:30:49,832 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 15:30:49,832 INFO L276 IsEmpty]: Start isEmpty. Operand 4015 states and 5589 transitions. [2024-11-13 15:30:49,833 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2024-11-13 15:30:49,833 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 15:30:49,833 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 15:30:49,864 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afbd63cc-39ec-4e64-9612-8b06172106ae/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Ended with exit code 0 [2024-11-13 15:30:50,037 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afbd63cc-39ec-4e64-9612-8b06172106ae/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:30:50,038 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr73REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 1088 more)] === [2024-11-13 15:30:50,039 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:30:50,039 INFO L85 PathProgramCache]: Analyzing trace with hash 709523097, now seen corresponding path program 1 times [2024-11-13 15:30:50,040 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-13 15:30:50,040 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [107294079] [2024-11-13 15:30:50,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:30:50,040 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:30:50,041 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afbd63cc-39ec-4e64-9612-8b06172106ae/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:30:50,043 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afbd63cc-39ec-4e64-9612-8b06172106ae/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 15:30:50,047 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afbd63cc-39ec-4e64-9612-8b06172106ae/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2024-11-13 15:30:50,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:30:50,505 INFO L255 TraceCheckSpWp]: Trace formula consists of 263 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-13 15:30:50,508 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:30:50,571 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 15:30:50,572 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 15:30:50,572 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-13 15:30:50,572 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [107294079] [2024-11-13 15:30:50,572 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [107294079] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 15:30:50,572 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 15:30:50,572 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-13 15:30:50,572 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1827170836] [2024-11-13 15:30:50,572 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 15:30:50,573 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-13 15:30:50,573 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-13 15:30:50,573 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-13 15:30:50,573 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-13 15:30:50,573 INFO L87 Difference]: Start difference. First operand 4015 states and 5589 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 15:30:50,690 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 15:30:50,690 INFO L93 Difference]: Finished difference Result 3997 states and 5559 transitions. [2024-11-13 15:30:50,691 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-13 15:30:50,691 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 15:30:50,691 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 15:30:50,696 INFO L225 Difference]: With dead ends: 3997 [2024-11-13 15:30:50,697 INFO L226 Difference]: Without dead ends: 3997 [2024-11-13 15:30:50,697 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 15:30:50,697 INFO L432 NwaCegarLoop]: 2011 mSDtfsCounter, 21 mSDsluCounter, 3991 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 6002 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 15:30:50,698 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 6002 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-13 15:30:50,703 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3997 states. [2024-11-13 15:30:50,748 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3997 to 3997. [2024-11-13 15:30:50,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3997 states, 3144 states have (on average 1.7471374045801527) internal successors, (5493), 3964 states have internal predecessors, (5493), 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 15:30:50,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3997 states to 3997 states and 5559 transitions. [2024-11-13 15:30:50,764 INFO L78 Accepts]: Start accepts. Automaton has 3997 states and 5559 transitions. Word has length 55 [2024-11-13 15:30:50,764 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 15:30:50,764 INFO L471 AbstractCegarLoop]: Abstraction has 3997 states and 5559 transitions. [2024-11-13 15:30:50,765 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 15:30:50,765 INFO L276 IsEmpty]: Start isEmpty. Operand 3997 states and 5559 transitions. [2024-11-13 15:30:50,766 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2024-11-13 15:30:50,766 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 15:30:50,766 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 15:30:50,798 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afbd63cc-39ec-4e64-9612-8b06172106ae/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2024-11-13 15:30:50,966 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afbd63cc-39ec-4e64-9612-8b06172106ae/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:30:50,967 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr381REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 1088 more)] === [2024-11-13 15:30:50,967 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:30:50,968 INFO L85 PathProgramCache]: Analyzing trace with hash 1361620203, now seen corresponding path program 1 times [2024-11-13 15:30:50,968 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-13 15:30:50,968 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [952210707] [2024-11-13 15:30:50,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:30:50,968 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:30:50,969 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afbd63cc-39ec-4e64-9612-8b06172106ae/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:30:50,972 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afbd63cc-39ec-4e64-9612-8b06172106ae/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 15:30:50,973 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afbd63cc-39ec-4e64-9612-8b06172106ae/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2024-11-13 15:30:51,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:30:51,408 INFO L255 TraceCheckSpWp]: Trace formula consists of 263 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-13 15:30:51,410 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:30:51,486 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 15:30:51,486 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 15:30:51,486 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-13 15:30:51,486 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [952210707] [2024-11-13 15:30:51,487 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [952210707] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 15:30:51,487 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 15:30:51,487 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-13 15:30:51,487 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1054326921] [2024-11-13 15:30:51,487 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 15:30:51,487 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-13 15:30:51,488 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-13 15:30:51,488 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-13 15:30:51,488 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-13 15:30:51,488 INFO L87 Difference]: Start difference. First operand 3997 states and 5559 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 15:30:51,598 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 15:30:51,598 INFO L93 Difference]: Finished difference Result 3955 states and 5489 transitions. [2024-11-13 15:30:51,598 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-13 15:30:51,599 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 15:30:51,599 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 15:30:51,605 INFO L225 Difference]: With dead ends: 3955 [2024-11-13 15:30:51,605 INFO L226 Difference]: Without dead ends: 3955 [2024-11-13 15:30:51,605 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 15:30:51,607 INFO L432 NwaCegarLoop]: 2007 mSDtfsCounter, 27 mSDsluCounter, 3977 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 5984 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 15:30:51,608 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [27 Valid, 5984 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-13 15:30:51,611 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3955 states. [2024-11-13 15:30:51,679 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3955 to 3955. [2024-11-13 15:30:51,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3955 states, 3102 states have (on average 1.74822695035461) internal successors, (5423), 3922 states have internal predecessors, (5423), 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 15:30:51,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3955 states to 3955 states and 5489 transitions. [2024-11-13 15:30:51,712 INFO L78 Accepts]: Start accepts. Automaton has 3955 states and 5489 transitions. Word has length 55 [2024-11-13 15:30:51,712 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 15:30:51,712 INFO L471 AbstractCegarLoop]: Abstraction has 3955 states and 5489 transitions. [2024-11-13 15:30:51,712 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 15:30:51,712 INFO L276 IsEmpty]: Start isEmpty. Operand 3955 states and 5489 transitions. [2024-11-13 15:30:51,713 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2024-11-13 15:30:51,713 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 15:30:51,713 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 15:30:51,782 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afbd63cc-39ec-4e64-9612-8b06172106ae/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Ended with exit code 0 [2024-11-13 15:30:51,914 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afbd63cc-39ec-4e64-9612-8b06172106ae/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:30:51,915 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 1088 more)] === [2024-11-13 15:30:51,916 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:30:51,916 INFO L85 PathProgramCache]: Analyzing trace with hash -1262038760, now seen corresponding path program 1 times [2024-11-13 15:30:51,917 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-13 15:30:51,917 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [709709044] [2024-11-13 15:30:51,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:30:51,917 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:30:51,918 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afbd63cc-39ec-4e64-9612-8b06172106ae/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:30:51,920 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afbd63cc-39ec-4e64-9612-8b06172106ae/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 15:30:51,924 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afbd63cc-39ec-4e64-9612-8b06172106ae/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2024-11-13 15:30:52,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:30:52,347 INFO L255 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-13 15:30:52,351 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:30:52,371 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-13 15:30:52,372 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-13 15:30:52,378 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 15:30:52,447 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-13 15:30:52,447 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 15:30:52,482 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 15:30:52,482 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 15:30:52,482 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-13 15:30:52,483 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [709709044] [2024-11-13 15:30:52,483 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [709709044] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 15:30:52,484 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 15:30:52,484 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-13 15:30:52,484 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1405011821] [2024-11-13 15:30:52,484 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 15:30:52,485 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-13 15:30:52,485 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-13 15:30:52,485 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-13 15:30:52,486 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-13 15:30:52,486 INFO L87 Difference]: Start difference. First operand 3955 states and 5489 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 15:30:54,064 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 15:30:54,065 INFO L93 Difference]: Finished difference Result 4513 states and 5971 transitions. [2024-11-13 15:30:54,065 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-13 15:30:54,066 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 15:30:54,066 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 15:30:54,071 INFO L225 Difference]: With dead ends: 4513 [2024-11-13 15:30:54,071 INFO L226 Difference]: Without dead ends: 4513 [2024-11-13 15:30:54,071 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 15:30:54,072 INFO L432 NwaCegarLoop]: 1913 mSDtfsCounter, 1652 mSDsluCounter, 3107 mSDsCounter, 0 mSdLazyCounter, 259 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1661 SdHoareTripleChecker+Valid, 5020 SdHoareTripleChecker+Invalid, 261 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 259 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2024-11-13 15:30:54,072 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1661 Valid, 5020 Invalid, 261 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 259 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2024-11-13 15:30:54,078 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4513 states. [2024-11-13 15:30:54,128 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4513 to 3667. [2024-11-13 15:30:54,132 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3667 states, 2817 states have (on average 1.7618033368832091) internal successors, (4963), 3637 states have internal predecessors, (4963), 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 15:30:54,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3667 states to 3667 states and 5023 transitions. [2024-11-13 15:30:54,143 INFO L78 Accepts]: Start accepts. Automaton has 3667 states and 5023 transitions. Word has length 60 [2024-11-13 15:30:54,143 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 15:30:54,143 INFO L471 AbstractCegarLoop]: Abstraction has 3667 states and 5023 transitions. [2024-11-13 15:30:54,144 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 15:30:54,144 INFO L276 IsEmpty]: Start isEmpty. Operand 3667 states and 5023 transitions. [2024-11-13 15:30:54,145 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2024-11-13 15:30:54,145 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 15:30:54,145 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 15:30:54,177 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afbd63cc-39ec-4e64-9612-8b06172106ae/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Ended with exit code 0 [2024-11-13 15:30:54,345 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afbd63cc-39ec-4e64-9612-8b06172106ae/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:30:54,346 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr73REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 1088 more)] === [2024-11-13 15:30:54,346 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:30:54,346 INFO L85 PathProgramCache]: Analyzing trace with hash -1958904627, now seen corresponding path program 1 times [2024-11-13 15:30:54,347 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-13 15:30:54,347 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [721186304] [2024-11-13 15:30:54,347 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:30:54,347 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:30:54,347 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afbd63cc-39ec-4e64-9612-8b06172106ae/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:30:54,350 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afbd63cc-39ec-4e64-9612-8b06172106ae/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 15:30:54,351 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afbd63cc-39ec-4e64-9612-8b06172106ae/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2024-11-13 15:30:54,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:30:54,837 INFO L255 TraceCheckSpWp]: Trace formula consists of 287 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-13 15:30:54,842 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:30:54,855 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 15:30:55,817 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 15:30:55,818 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 15:30:55,837 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2024-11-13 15:30:55,837 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 15:30:55,851 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 15:30:55,852 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 15:30:55,852 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-13 15:30:55,852 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [721186304] [2024-11-13 15:30:55,852 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [721186304] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 15:30:55,852 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 15:30:55,852 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-13 15:30:55,853 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1525832267] [2024-11-13 15:30:55,853 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 15:30:55,853 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-13 15:30:55,853 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-13 15:30:55,854 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-13 15:30:55,854 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-13 15:30:55,854 INFO L87 Difference]: Start difference. First operand 3667 states and 5023 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 15:31:03,234 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 15:31:03,234 INFO L93 Difference]: Finished difference Result 3583 states and 4835 transitions. [2024-11-13 15:31:03,235 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-13 15:31:03,235 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 15:31:03,235 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 15:31:03,237 INFO L225 Difference]: With dead ends: 3583 [2024-11-13 15:31:03,238 INFO L226 Difference]: Without dead ends: 3583 [2024-11-13 15:31:03,238 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 15:31:03,239 INFO L432 NwaCegarLoop]: 863 mSDtfsCounter, 1648 mSDsluCounter, 922 mSDsCounter, 0 mSdLazyCounter, 2587 mSolverCounterSat, 92 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1658 SdHoareTripleChecker+Valid, 1785 SdHoareTripleChecker+Invalid, 2679 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 92 IncrementalHoareTripleChecker+Valid, 2587 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.3s IncrementalHoareTripleChecker+Time [2024-11-13 15:31:03,239 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1658 Valid, 1785 Invalid, 2679 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [92 Valid, 2587 Invalid, 0 Unknown, 0 Unchecked, 7.3s Time] [2024-11-13 15:31:03,242 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3583 states. [2024-11-13 15:31:03,269 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3583 to 3476. [2024-11-13 15:31:03,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3476 states, 2710 states have (on average 1.6874538745387453) internal successors, (4573), 3446 states have internal predecessors, (4573), 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 15:31:03,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3476 states to 3476 states and 4633 transitions. [2024-11-13 15:31:03,276 INFO L78 Accepts]: Start accepts. Automaton has 3476 states and 4633 transitions. Word has length 63 [2024-11-13 15:31:03,276 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 15:31:03,276 INFO L471 AbstractCegarLoop]: Abstraction has 3476 states and 4633 transitions. [2024-11-13 15:31:03,277 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 15:31:03,277 INFO L276 IsEmpty]: Start isEmpty. Operand 3476 states and 4633 transitions. [2024-11-13 15:31:03,277 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2024-11-13 15:31:03,277 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 15:31:03,277 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 15:31:03,297 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afbd63cc-39ec-4e64-9612-8b06172106ae/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Forceful destruction successful, exit code 0 [2024-11-13 15:31:03,478 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afbd63cc-39ec-4e64-9612-8b06172106ae/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:31:03,478 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr78REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 1088 more)] === [2024-11-13 15:31:03,478 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:31:03,478 INFO L85 PathProgramCache]: Analyzing trace with hash -99461187, now seen corresponding path program 1 times [2024-11-13 15:31:03,479 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-13 15:31:03,479 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1430853388] [2024-11-13 15:31:03,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:31:03,479 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:31:03,479 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afbd63cc-39ec-4e64-9612-8b06172106ae/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:31:03,482 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afbd63cc-39ec-4e64-9612-8b06172106ae/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 15:31:03,484 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afbd63cc-39ec-4e64-9612-8b06172106ae/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2024-11-13 15:31:03,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:31:03,940 INFO L255 TraceCheckSpWp]: Trace formula consists of 314 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-13 15:31:03,944 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:31:03,955 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2024-11-13 15:31:03,975 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 15:31:04,014 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 15:31:04,031 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 15:31:04,031 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 15:31:04,031 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-13 15:31:04,031 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1430853388] [2024-11-13 15:31:04,031 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1430853388] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 15:31:04,031 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 15:31:04,031 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-13 15:31:04,031 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1538979090] [2024-11-13 15:31:04,031 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 15:31:04,032 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-13 15:31:04,032 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-13 15:31:04,032 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-13 15:31:04,032 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-13 15:31:04,032 INFO L87 Difference]: Start difference. First operand 3476 states and 4633 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 15:31:10,798 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 15:31:10,799 INFO L93 Difference]: Finished difference Result 3475 states and 4631 transitions. [2024-11-13 15:31:10,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-13 15:31:10,799 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 15:31:10,800 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 15:31:10,803 INFO L225 Difference]: With dead ends: 3475 [2024-11-13 15:31:10,803 INFO L226 Difference]: Without dead ends: 3475 [2024-11-13 15:31:10,803 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 15:31:10,804 INFO L432 NwaCegarLoop]: 1934 mSDtfsCounter, 2 mSDsluCounter, 3255 mSDsCounter, 0 mSdLazyCounter, 2554 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 5189 SdHoareTripleChecker+Invalid, 2555 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 2554 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.7s IncrementalHoareTripleChecker+Time [2024-11-13 15:31:10,804 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 5189 Invalid, 2555 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 2554 Invalid, 0 Unknown, 0 Unchecked, 6.7s Time] [2024-11-13 15:31:10,808 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3475 states. [2024-11-13 15:31:10,834 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3475 to 3475. [2024-11-13 15:31:10,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3475 states, 2710 states have (on average 1.6867158671586715) internal successors, (4571), 3445 states have internal predecessors, (4571), 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 15:31:10,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3475 states to 3475 states and 4631 transitions. [2024-11-13 15:31:10,842 INFO L78 Accepts]: Start accepts. Automaton has 3475 states and 4631 transitions. Word has length 68 [2024-11-13 15:31:10,842 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 15:31:10,842 INFO L471 AbstractCegarLoop]: Abstraction has 3475 states and 4631 transitions. [2024-11-13 15:31:10,843 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 15:31:10,843 INFO L276 IsEmpty]: Start isEmpty. Operand 3475 states and 4631 transitions. [2024-11-13 15:31:10,843 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2024-11-13 15:31:10,843 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 15:31:10,843 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 15:31:10,866 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afbd63cc-39ec-4e64-9612-8b06172106ae/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Ended with exit code 0 [2024-11-13 15:31:11,044 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afbd63cc-39ec-4e64-9612-8b06172106ae/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:31:11,044 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr79REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 1088 more)] === [2024-11-13 15:31:11,045 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:31:11,045 INFO L85 PathProgramCache]: Analyzing trace with hash -99461186, now seen corresponding path program 1 times [2024-11-13 15:31:11,046 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-13 15:31:11,046 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1800668764] [2024-11-13 15:31:11,046 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:31:11,046 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:31:11,046 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afbd63cc-39ec-4e64-9612-8b06172106ae/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:31:11,050 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afbd63cc-39ec-4e64-9612-8b06172106ae/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 15:31:11,053 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afbd63cc-39ec-4e64-9612-8b06172106ae/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2024-11-13 15:31:11,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:31:11,569 INFO L255 TraceCheckSpWp]: Trace formula consists of 314 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-11-13 15:31:11,574 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:31:11,593 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 15:31:11,626 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2024-11-13 15:31:11,640 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 15:31:11,755 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 15:31:11,791 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 15:31:11,792 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 15:31:11,792 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-13 15:31:11,792 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1800668764] [2024-11-13 15:31:11,792 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1800668764] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 15:31:11,792 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 15:31:11,792 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-13 15:31:11,793 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [196063212] [2024-11-13 15:31:11,793 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 15:31:11,794 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-13 15:31:11,794 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-13 15:31:11,795 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-13 15:31:11,795 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-13 15:31:11,795 INFO L87 Difference]: Start difference. First operand 3475 states and 4631 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 15:31:21,824 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 15:31:21,824 INFO L93 Difference]: Finished difference Result 3474 states and 4629 transitions. [2024-11-13 15:31:21,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-13 15:31:21,825 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 15:31:21,826 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 15:31:21,830 INFO L225 Difference]: With dead ends: 3474 [2024-11-13 15:31:21,830 INFO L226 Difference]: Without dead ends: 3474 [2024-11-13 15:31:21,830 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 15:31:21,831 INFO L432 NwaCegarLoop]: 1934 mSDtfsCounter, 1 mSDsluCounter, 3221 mSDsCounter, 0 mSdLazyCounter, 2585 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 5155 SdHoareTripleChecker+Invalid, 2586 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 2585 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.9s IncrementalHoareTripleChecker+Time [2024-11-13 15:31:21,831 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 5155 Invalid, 2586 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 2585 Invalid, 0 Unknown, 0 Unchecked, 9.9s Time] [2024-11-13 15:31:21,836 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3474 states. [2024-11-13 15:31:21,894 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3474 to 3474. [2024-11-13 15:31:21,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3474 states, 2708 states have (on average 1.6872230428360413) internal successors, (4569), 3444 states have internal predecessors, (4569), 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 15:31:21,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3474 states to 3474 states and 4629 transitions. [2024-11-13 15:31:21,908 INFO L78 Accepts]: Start accepts. Automaton has 3474 states and 4629 transitions. Word has length 68 [2024-11-13 15:31:21,908 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 15:31:21,908 INFO L471 AbstractCegarLoop]: Abstraction has 3474 states and 4629 transitions. [2024-11-13 15:31:21,909 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 15:31:21,909 INFO L276 IsEmpty]: Start isEmpty. Operand 3474 states and 4629 transitions. [2024-11-13 15:31:21,910 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2024-11-13 15:31:21,910 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 15:31:21,910 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 15:31:21,945 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afbd63cc-39ec-4e64-9612-8b06172106ae/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Forceful destruction successful, exit code 0 [2024-11-13 15:31:22,111 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afbd63cc-39ec-4e64-9612-8b06172106ae/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:31:22,111 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr386REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 1088 more)] === [2024-11-13 15:31:22,112 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:31:22,112 INFO L85 PathProgramCache]: Analyzing trace with hash 935140477, now seen corresponding path program 1 times [2024-11-13 15:31:22,113 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-13 15:31:22,113 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1361071550] [2024-11-13 15:31:22,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:31:22,113 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:31:22,113 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afbd63cc-39ec-4e64-9612-8b06172106ae/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:31:22,116 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afbd63cc-39ec-4e64-9612-8b06172106ae/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 15:31:22,118 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afbd63cc-39ec-4e64-9612-8b06172106ae/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2024-11-13 15:31:22,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:31:22,585 INFO L255 TraceCheckSpWp]: Trace formula consists of 314 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-13 15:31:22,589 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:31:22,599 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 15:31:22,626 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2024-11-13 15:31:22,655 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 15:31:22,670 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 15:31:22,670 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 15:31:22,670 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-13 15:31:22,670 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1361071550] [2024-11-13 15:31:22,671 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1361071550] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 15:31:22,671 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 15:31:22,671 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-13 15:31:22,671 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1033095771] [2024-11-13 15:31:22,671 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 15:31:22,671 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-13 15:31:22,671 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-13 15:31:22,672 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-13 15:31:22,672 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-13 15:31:22,672 INFO L87 Difference]: Start difference. First operand 3474 states and 4629 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 15:31:30,230 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 15:31:30,230 INFO L93 Difference]: Finished difference Result 3473 states and 4626 transitions. [2024-11-13 15:31:30,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-13 15:31:30,231 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 15:31:30,231 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 15:31:30,235 INFO L225 Difference]: With dead ends: 3473 [2024-11-13 15:31:30,235 INFO L226 Difference]: Without dead ends: 3473 [2024-11-13 15:31:30,235 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 15:31:30,236 INFO L432 NwaCegarLoop]: 1932 mSDtfsCounter, 2 mSDsluCounter, 3252 mSDsCounter, 0 mSdLazyCounter, 2551 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 5184 SdHoareTripleChecker+Invalid, 2552 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 2551 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.4s IncrementalHoareTripleChecker+Time [2024-11-13 15:31:30,236 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 5184 Invalid, 2552 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 2551 Invalid, 0 Unknown, 0 Unchecked, 7.4s Time] [2024-11-13 15:31:30,238 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3473 states. [2024-11-13 15:31:30,274 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3473 to 3473. [2024-11-13 15:31:30,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3473 states, 2708 states have (on average 1.6861152141802067) internal successors, (4566), 3443 states have internal predecessors, (4566), 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 15:31:30,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3473 states to 3473 states and 4626 transitions. [2024-11-13 15:31:30,288 INFO L78 Accepts]: Start accepts. Automaton has 3473 states and 4626 transitions. Word has length 68 [2024-11-13 15:31:30,288 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 15:31:30,288 INFO L471 AbstractCegarLoop]: Abstraction has 3473 states and 4626 transitions. [2024-11-13 15:31:30,288 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 15:31:30,288 INFO L276 IsEmpty]: Start isEmpty. Operand 3473 states and 4626 transitions. [2024-11-13 15:31:30,289 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2024-11-13 15:31:30,289 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 15:31:30,290 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 15:31:30,322 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afbd63cc-39ec-4e64-9612-8b06172106ae/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Ended with exit code 0 [2024-11-13 15:31:30,490 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afbd63cc-39ec-4e64-9612-8b06172106ae/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:31:30,491 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr387REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 1088 more)] === [2024-11-13 15:31:30,491 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:31:30,491 INFO L85 PathProgramCache]: Analyzing trace with hash 935140478, now seen corresponding path program 1 times [2024-11-13 15:31:30,492 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-13 15:31:30,492 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [898738049] [2024-11-13 15:31:30,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:31:30,492 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:31:30,492 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afbd63cc-39ec-4e64-9612-8b06172106ae/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:31:30,496 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afbd63cc-39ec-4e64-9612-8b06172106ae/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 15:31:30,500 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afbd63cc-39ec-4e64-9612-8b06172106ae/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2024-11-13 15:31:30,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:31:30,984 INFO L255 TraceCheckSpWp]: Trace formula consists of 314 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-11-13 15:31:30,987 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:31:31,003 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 15:31:31,071 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 15:31:31,080 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 15:31:31,156 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 15:31:31,192 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 15:31:31,192 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 15:31:31,192 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-13 15:31:31,192 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [898738049] [2024-11-13 15:31:31,192 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [898738049] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 15:31:31,192 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 15:31:31,192 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-13 15:31:31,192 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2097419951] [2024-11-13 15:31:31,193 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 15:31:31,193 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-13 15:31:31,193 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-13 15:31:31,193 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-13 15:31:31,193 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-13 15:31:31,194 INFO L87 Difference]: Start difference. First operand 3473 states and 4626 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 15:31:41,193 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 15:31:41,193 INFO L93 Difference]: Finished difference Result 3472 states and 4623 transitions. [2024-11-13 15:31:41,194 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-13 15:31:41,194 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 15:31:41,195 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 15:31:41,199 INFO L225 Difference]: With dead ends: 3472 [2024-11-13 15:31:41,199 INFO L226 Difference]: Without dead ends: 3472 [2024-11-13 15:31:41,199 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 15:31:41,200 INFO L432 NwaCegarLoop]: 1932 mSDtfsCounter, 1 mSDsluCounter, 3218 mSDsCounter, 0 mSdLazyCounter, 2582 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 5150 SdHoareTripleChecker+Invalid, 2583 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 2582 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.9s IncrementalHoareTripleChecker+Time [2024-11-13 15:31:41,200 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 5150 Invalid, 2583 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 2582 Invalid, 0 Unknown, 0 Unchecked, 9.9s Time] [2024-11-13 15:31:41,203 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3472 states. [2024-11-13 15:31:41,255 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3472 to 3472. [2024-11-13 15:31:41,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3472 states, 2705 states have (on average 1.6868761552680223) internal successors, (4563), 3442 states have internal predecessors, (4563), 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 15:31:41,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3472 states to 3472 states and 4623 transitions. [2024-11-13 15:31:41,264 INFO L78 Accepts]: Start accepts. Automaton has 3472 states and 4623 transitions. Word has length 68 [2024-11-13 15:31:41,264 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 15:31:41,264 INFO L471 AbstractCegarLoop]: Abstraction has 3472 states and 4623 transitions. [2024-11-13 15:31:41,264 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 15:31:41,265 INFO L276 IsEmpty]: Start isEmpty. Operand 3472 states and 4623 transitions. [2024-11-13 15:31:41,265 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2024-11-13 15:31:41,265 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 15:31:41,265 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 15:31:41,292 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afbd63cc-39ec-4e64-9612-8b06172106ae/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Ended with exit code 0 [2024-11-13 15:31:41,466 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afbd63cc-39ec-4e64-9612-8b06172106ae/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:31:41,466 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr82REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 1088 more)] === [2024-11-13 15:31:41,467 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:31:41,467 INFO L85 PathProgramCache]: Analyzing trace with hash 981697828, now seen corresponding path program 1 times [2024-11-13 15:31:41,468 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-13 15:31:41,468 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1894721735] [2024-11-13 15:31:41,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:31:41,469 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:31:41,469 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afbd63cc-39ec-4e64-9612-8b06172106ae/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:31:41,471 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afbd63cc-39ec-4e64-9612-8b06172106ae/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 15:31:41,473 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afbd63cc-39ec-4e64-9612-8b06172106ae/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2024-11-13 15:31:41,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:31:41,966 INFO L255 TraceCheckSpWp]: Trace formula consists of 340 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-13 15:31:41,969 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:31:41,980 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 15:31:42,097 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 15:31:42,122 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 15:31:42,122 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 15:31:42,122 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-13 15:31:42,122 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1894721735] [2024-11-13 15:31:42,122 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1894721735] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 15:31:42,122 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 15:31:42,123 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-13 15:31:42,123 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [934460826] [2024-11-13 15:31:42,123 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 15:31:42,123 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-13 15:31:42,123 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-13 15:31:42,125 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-13 15:31:42,125 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-11-13 15:31:42,125 INFO L87 Difference]: Start difference. First operand 3472 states and 4623 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 15:31:53,083 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 15:31:53,084 INFO L93 Difference]: Finished difference Result 3490 states and 4658 transitions. [2024-11-13 15:31:53,084 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-13 15:31:53,084 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 15:31:53,085 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 15:31:53,092 INFO L225 Difference]: With dead ends: 3490 [2024-11-13 15:31:53,092 INFO L226 Difference]: Without dead ends: 3490 [2024-11-13 15:31:53,092 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 15:31:53,093 INFO L432 NwaCegarLoop]: 1896 mSDtfsCounter, 27 mSDsluCounter, 6335 mSDsCounter, 0 mSdLazyCounter, 3339 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 8231 SdHoareTripleChecker+Invalid, 3350 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 3339 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.7s IncrementalHoareTripleChecker+Time [2024-11-13 15:31:53,093 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [31 Valid, 8231 Invalid, 3350 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [11 Valid, 3339 Invalid, 0 Unknown, 0 Unchecked, 10.7s Time] [2024-11-13 15:31:53,096 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3490 states. [2024-11-13 15:31:53,135 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3490 to 3481. [2024-11-13 15:31:53,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3481 states, 2713 states have (on average 1.6859565057132326) internal successors, (4574), 3449 states have internal predecessors, (4574), 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 15:31:53,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3481 states to 3481 states and 4648 transitions. [2024-11-13 15:31:53,146 INFO L78 Accepts]: Start accepts. Automaton has 3481 states and 4648 transitions. Word has length 76 [2024-11-13 15:31:53,146 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 15:31:53,146 INFO L471 AbstractCegarLoop]: Abstraction has 3481 states and 4648 transitions. [2024-11-13 15:31:53,146 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 15:31:53,147 INFO L276 IsEmpty]: Start isEmpty. Operand 3481 states and 4648 transitions. [2024-11-13 15:31:53,147 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2024-11-13 15:31:53,147 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 15:31:53,148 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 15:31:53,176 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afbd63cc-39ec-4e64-9612-8b06172106ae/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Ended with exit code 0 [2024-11-13 15:31:53,348 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afbd63cc-39ec-4e64-9612-8b06172106ae/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:31:53,349 INFO L396 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr83REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 1088 more)] === [2024-11-13 15:31:53,349 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:31:53,349 INFO L85 PathProgramCache]: Analyzing trace with hash 981697829, now seen corresponding path program 1 times [2024-11-13 15:31:53,350 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-13 15:31:53,350 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1624686497] [2024-11-13 15:31:53,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:31:53,350 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:31:53,350 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afbd63cc-39ec-4e64-9612-8b06172106ae/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:31:53,352 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afbd63cc-39ec-4e64-9612-8b06172106ae/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 15:31:53,354 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afbd63cc-39ec-4e64-9612-8b06172106ae/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2024-11-13 15:31:53,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:31:53,901 INFO L255 TraceCheckSpWp]: Trace formula consists of 340 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-13 15:31:53,904 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:31:53,944 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 15:31:53,944 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 15:31:53,944 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-13 15:31:53,944 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1624686497] [2024-11-13 15:31:53,944 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1624686497] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 15:31:53,944 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 15:31:53,944 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-13 15:31:53,945 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [211828675] [2024-11-13 15:31:53,945 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 15:31:53,945 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-13 15:31:53,945 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-13 15:31:53,946 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-13 15:31:53,947 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-13 15:31:53,947 INFO L87 Difference]: Start difference. First operand 3481 states and 4648 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 15:31:54,076 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 15:31:54,076 INFO L93 Difference]: Finished difference Result 3475 states and 4630 transitions. [2024-11-13 15:31:54,078 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-13 15:31:54,078 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 15:31:54,078 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 15:31:54,093 INFO L225 Difference]: With dead ends: 3475 [2024-11-13 15:31:54,093 INFO L226 Difference]: Without dead ends: 3475 [2024-11-13 15:31:54,094 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 15:31:54,094 INFO L432 NwaCegarLoop]: 1931 mSDtfsCounter, 0 mSDsluCounter, 3854 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 5785 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 15:31:54,095 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 5785 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-13 15:31:54,102 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3475 states. [2024-11-13 15:31:54,153 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3475 to 3475. [2024-11-13 15:31:54,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3475 states, 2707 states have (on average 1.6867380864425563) internal successors, (4566), 3445 states have internal predecessors, (4566), 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 15:31:54,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3475 states to 3475 states and 4630 transitions. [2024-11-13 15:31:54,168 INFO L78 Accepts]: Start accepts. Automaton has 3475 states and 4630 transitions. Word has length 76 [2024-11-13 15:31:54,169 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 15:31:54,169 INFO L471 AbstractCegarLoop]: Abstraction has 3475 states and 4630 transitions. [2024-11-13 15:31:54,169 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 15:31:54,169 INFO L276 IsEmpty]: Start isEmpty. Operand 3475 states and 4630 transitions. [2024-11-13 15:31:54,170 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2024-11-13 15:31:54,170 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 15:31:54,170 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 15:31:54,208 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afbd63cc-39ec-4e64-9612-8b06172106ae/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Forceful destruction successful, exit code 0 [2024-11-13 15:31:54,371 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afbd63cc-39ec-4e64-9612-8b06172106ae/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:31:54,371 INFO L396 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr82REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 1088 more)] === [2024-11-13 15:31:54,372 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:31:54,372 INFO L85 PathProgramCache]: Analyzing trace with hash -439863677, now seen corresponding path program 1 times [2024-11-13 15:31:54,373 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-13 15:31:54,373 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1720355746] [2024-11-13 15:31:54,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:31:54,373 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:31:54,373 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afbd63cc-39ec-4e64-9612-8b06172106ae/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:31:54,375 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afbd63cc-39ec-4e64-9612-8b06172106ae/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 15:31:54,377 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afbd63cc-39ec-4e64-9612-8b06172106ae/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Waiting until timeout for monitored process [2024-11-13 15:31:54,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:31:54,934 INFO L255 TraceCheckSpWp]: Trace formula consists of 351 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-13 15:31:54,937 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:31:54,995 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 15:31:54,995 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 15:31:55,143 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 15:31:55,144 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-13 15:31:55,144 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1720355746] [2024-11-13 15:31:55,144 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1720355746] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 15:31:55,144 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-13 15:31:55,144 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2024-11-13 15:31:55,145 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1861505305] [2024-11-13 15:31:55,145 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-13 15:31:55,145 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-13 15:31:55,145 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-13 15:31:55,146 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-13 15:31:55,146 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2024-11-13 15:31:55,147 INFO L87 Difference]: Start difference. First operand 3475 states and 4630 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 15:31:55,562 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 15:31:55,563 INFO L93 Difference]: Finished difference Result 3487 states and 4650 transitions. [2024-11-13 15:31:55,564 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-13 15:31:55,564 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 15:31:55,565 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 15:31:55,580 INFO L225 Difference]: With dead ends: 3487 [2024-11-13 15:31:55,580 INFO L226 Difference]: Without dead ends: 3487 [2024-11-13 15:31:55,580 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 155 GetRequests, 146 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=44, Invalid=66, Unknown=0, NotChecked=0, Total=110 [2024-11-13 15:31:55,581 INFO L432 NwaCegarLoop]: 1930 mSDtfsCounter, 8 mSDsluCounter, 5776 mSDsCounter, 0 mSdLazyCounter, 69 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 7706 SdHoareTripleChecker+Invalid, 87 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 69 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-13 15:31:55,583 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 7706 Invalid, 87 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 69 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-13 15:31:55,588 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3487 states. [2024-11-13 15:31:55,640 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3487 to 3485. [2024-11-13 15:31:55,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3485 states, 2716 states have (on average 1.6866715758468336) internal successors, (4581), 3454 states have internal predecessors, (4581), 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 15:31:55,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3485 states to 3485 states and 4645 transitions. [2024-11-13 15:31:55,652 INFO L78 Accepts]: Start accepts. Automaton has 3485 states and 4645 transitions. Word has length 77 [2024-11-13 15:31:55,652 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 15:31:55,652 INFO L471 AbstractCegarLoop]: Abstraction has 3485 states and 4645 transitions. [2024-11-13 15:31:55,653 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 15:31:55,653 INFO L276 IsEmpty]: Start isEmpty. Operand 3485 states and 4645 transitions. [2024-11-13 15:31:55,654 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2024-11-13 15:31:55,654 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 15:31:55,654 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 15:31:55,689 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afbd63cc-39ec-4e64-9612-8b06172106ae/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Forceful destruction successful, exit code 0 [2024-11-13 15:31:55,855 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afbd63cc-39ec-4e64-9612-8b06172106ae/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:31:55,855 INFO L396 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr82REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 1088 more)] === [2024-11-13 15:31:55,855 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:31:55,856 INFO L85 PathProgramCache]: Analyzing trace with hash 1054106852, now seen corresponding path program 2 times [2024-11-13 15:31:55,856 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-13 15:31:55,856 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [695899036] [2024-11-13 15:31:55,856 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-13 15:31:55,857 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:31:55,857 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afbd63cc-39ec-4e64-9612-8b06172106ae/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:31:55,859 INFO L229 MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afbd63cc-39ec-4e64-9612-8b06172106ae/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 15:31:55,861 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afbd63cc-39ec-4e64-9612-8b06172106ae/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Waiting until timeout for monitored process [2024-11-13 15:32:19,952 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-13 15:32:19,952 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 15:32:19,972 INFO L255 TraceCheckSpWp]: Trace formula consists of 384 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-11-13 15:32:19,978 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:32:20,192 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2024-11-13 15:32:20,192 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 15:32:20,229 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 15:32:20,614 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-13 15:32:20,614 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 15:32:20,705 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 15:32:20,755 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 15:32:20,755 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 15:32:20,927 INFO L349 Elim1Store]: treesize reduction 7, result has 63.2 percent of original size [2024-11-13 15:32:20,927 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 15:32:21,006 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-13 15:32:21,007 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [695899036] [2024-11-13 15:32:21,007 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [695899036] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 15:32:21,007 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [2101825679] [2024-11-13 15:32:21,007 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-13 15:32:21,007 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-13 15:32:21,007 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afbd63cc-39ec-4e64-9612-8b06172106ae/bin/uautomizer-verify-qhAvR1uOyd/cvc4 [2024-11-13 15:32:21,021 INFO L229 MonitoredProcess]: Starting monitored process 34 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afbd63cc-39ec-4e64-9612-8b06172106ae/bin/uautomizer-verify-qhAvR1uOyd/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-13 15:32:21,023 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afbd63cc-39ec-4e64-9612-8b06172106ae/bin/uautomizer-verify-qhAvR1uOyd/cvc4 --incremental --print-success --lang smt (34)] Waiting until timeout for monitored process [2024-11-13 15:32:23,629 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-13 15:32:23,630 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 15:32:23,684 INFO L255 TraceCheckSpWp]: Trace formula consists of 384 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-13 15:32:23,687 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:32:24,079 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 15:32:24,079 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 15:32:24,576 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 15:32:24,577 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [2101825679] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 15:32:24,577 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 15:32:24,577 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 8, 8] total 24 [2024-11-13 15:32:24,577 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1400961102] [2024-11-13 15:32:24,577 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 15:32:24,579 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2024-11-13 15:32:24,579 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-13 15:32:24,581 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2024-11-13 15:32:24,581 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=552, Unknown=7, NotChecked=0, Total=650 [2024-11-13 15:32:24,582 INFO L87 Difference]: Start difference. First operand 3485 states and 4645 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 15:32:52,210 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 15:32:52,210 INFO L93 Difference]: Finished difference Result 3501 states and 4673 transitions. [2024-11-13 15:32:52,211 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2024-11-13 15:32:52,211 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 15:32:52,212 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 15:32:52,221 INFO L225 Difference]: With dead ends: 3501 [2024-11-13 15:32:52,222 INFO L226 Difference]: Without dead ends: 3497 [2024-11-13 15:32:52,223 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 268 GetRequests, 217 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 487 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=416, Invalid=2332, Unknown=8, NotChecked=0, Total=2756 [2024-11-13 15:32:52,224 INFO L432 NwaCegarLoop]: 1167 mSDtfsCounter, 1680 mSDsluCounter, 12456 mSDsCounter, 0 mSdLazyCounter, 10085 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 22.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1697 SdHoareTripleChecker+Valid, 13623 SdHoareTripleChecker+Invalid, 10135 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 10085 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 25.6s IncrementalHoareTripleChecker+Time [2024-11-13 15:32:52,224 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1697 Valid, 13623 Invalid, 10135 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [50 Valid, 10085 Invalid, 0 Unknown, 0 Unchecked, 25.6s Time] [2024-11-13 15:32:52,232 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3497 states. [2024-11-13 15:32:52,276 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3497 to 3493. [2024-11-13 15:32:52,281 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3493 states, 2725 states have (on average 1.684770642201835) internal successors, (4591), 3462 states have internal predecessors, (4591), 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 15:32:52,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3493 states to 3493 states and 4655 transitions. [2024-11-13 15:32:52,290 INFO L78 Accepts]: Start accepts. Automaton has 3493 states and 4655 transitions. Word has length 80 [2024-11-13 15:32:52,293 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 15:32:52,294 INFO L471 AbstractCegarLoop]: Abstraction has 3493 states and 4655 transitions. [2024-11-13 15:32:52,294 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 15:32:52,294 INFO L276 IsEmpty]: Start isEmpty. Operand 3493 states and 4655 transitions. [2024-11-13 15:32:52,295 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2024-11-13 15:32:52,295 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 15:32:52,295 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 15:32:52,309 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afbd63cc-39ec-4e64-9612-8b06172106ae/bin/uautomizer-verify-qhAvR1uOyd/cvc4 --incremental --print-success --lang smt (34)] Ended with exit code 0 [2024-11-13 15:32:52,534 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afbd63cc-39ec-4e64-9612-8b06172106ae/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Forceful destruction successful, exit code 0 [2024-11-13 15:32:52,696 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afbd63cc-39ec-4e64-9612-8b06172106ae/bin/uautomizer-verify-qhAvR1uOyd/cvc4 --incremental --print-success --lang smt,33 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afbd63cc-39ec-4e64-9612-8b06172106ae/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:32:52,697 INFO L396 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr83REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 1088 more)] === [2024-11-13 15:32:52,697 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:32:52,697 INFO L85 PathProgramCache]: Analyzing trace with hash -1723092859, now seen corresponding path program 1 times [2024-11-13 15:32:52,698 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-13 15:32:52,698 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1312172703] [2024-11-13 15:32:52,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:32:52,698 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:32:52,698 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afbd63cc-39ec-4e64-9612-8b06172106ae/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:32:52,701 INFO L229 MonitoredProcess]: Starting monitored process 35 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afbd63cc-39ec-4e64-9612-8b06172106ae/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 15:32:52,702 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afbd63cc-39ec-4e64-9612-8b06172106ae/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Waiting until timeout for monitored process [2024-11-13 15:32:53,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:32:53,287 INFO L255 TraceCheckSpWp]: Trace formula consists of 450 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-13 15:32:53,289 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:32:53,597 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 15:32:53,598 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 15:32:54,677 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 15:32:54,677 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-13 15:32:54,677 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1312172703] [2024-11-13 15:32:54,677 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1312172703] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 15:32:54,677 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-13 15:32:54,678 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 26 [2024-11-13 15:32:54,678 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [181509987] [2024-11-13 15:32:54,678 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-13 15:32:54,678 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2024-11-13 15:32:54,678 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-13 15:32:54,680 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2024-11-13 15:32:54,680 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=193, Invalid=457, Unknown=0, NotChecked=0, Total=650 [2024-11-13 15:32:54,680 INFO L87 Difference]: Start difference. First operand 3493 states and 4655 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 15:32:58,422 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 15:32:58,423 INFO L93 Difference]: Finished difference Result 3517 states and 4694 transitions. [2024-11-13 15:32:58,427 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2024-11-13 15:32:58,427 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 15:32:58,427 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 15:32:58,450 INFO L225 Difference]: With dead ends: 3517 [2024-11-13 15:32:58,450 INFO L226 Difference]: Without dead ends: 3511 [2024-11-13 15:32:58,451 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 191 GetRequests, 146 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 100 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=728, Invalid=1434, Unknown=0, NotChecked=0, Total=2162 [2024-11-13 15:32:58,456 INFO L432 NwaCegarLoop]: 1930 mSDtfsCounter, 22 mSDsluCounter, 26949 mSDsCounter, 0 mSdLazyCounter, 642 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 28879 SdHoareTripleChecker+Invalid, 681 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 642 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2024-11-13 15:32:58,456 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 28879 Invalid, 681 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [39 Valid, 642 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2024-11-13 15:32:58,464 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3511 states. [2024-11-13 15:32:58,535 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3511 to 3511. [2024-11-13 15:32:58,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3511 states, 2743 states have (on average 1.6820998906306963) internal successors, (4614), 3480 states have internal predecessors, (4614), 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 15:32:58,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3511 states to 3511 states and 4678 transitions. [2024-11-13 15:32:58,549 INFO L78 Accepts]: Start accepts. Automaton has 3511 states and 4678 transitions. Word has length 86 [2024-11-13 15:32:58,549 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 15:32:58,549 INFO L471 AbstractCegarLoop]: Abstraction has 3511 states and 4678 transitions. [2024-11-13 15:32:58,549 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 15:32:58,550 INFO L276 IsEmpty]: Start isEmpty. Operand 3511 states and 4678 transitions. [2024-11-13 15:32:58,550 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2024-11-13 15:32:58,551 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 15:32:58,551 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 15:32:58,590 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afbd63cc-39ec-4e64-9612-8b06172106ae/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Ended with exit code 0 [2024-11-13 15:32:58,751 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afbd63cc-39ec-4e64-9612-8b06172106ae/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:32:58,752 INFO L396 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr83REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 1088 more)] === [2024-11-13 15:32:58,754 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:32:58,754 INFO L85 PathProgramCache]: Analyzing trace with hash 1451663301, now seen corresponding path program 2 times [2024-11-13 15:32:58,755 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-13 15:32:58,755 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [346601904] [2024-11-13 15:32:58,755 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-13 15:32:58,755 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:32:58,755 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afbd63cc-39ec-4e64-9612-8b06172106ae/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:32:58,759 INFO L229 MonitoredProcess]: Starting monitored process 36 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afbd63cc-39ec-4e64-9612-8b06172106ae/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 15:32:58,761 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afbd63cc-39ec-4e64-9612-8b06172106ae/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Waiting until timeout for monitored process [2024-11-13 15:33:42,163 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-13 15:33:42,163 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 15:33:42,194 INFO L255 TraceCheckSpWp]: Trace formula consists of 582 conjuncts, 64 conjuncts are in the unsatisfiable core [2024-11-13 15:33:42,205 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:33:42,393 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2024-11-13 15:33:42,394 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 15:33:42,403 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 15:33:42,453 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 15:33:42,469 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 15:33:42,636 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 22 treesize of output 10 [2024-11-13 15:33:42,646 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 15:33:43,484 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-13 15:33:43,484 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 15:33:43,503 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 15:33:43,602 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 15:33:43,615 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 15:33:43,663 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 15:33:43,663 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 15:33:44,504 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (and (forall ((v_ArrVal_2594 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (select (store |c_#memory_$Pointer$#2.offset| |c_ULTIMATE.start_main_#t~mem37#1.base| v_ArrVal_2594) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (bvule (bvadd .cse0 (_ bv16 32)) (bvadd .cse0 (_ bv20 32))))) (forall ((v_ArrVal_2594 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_2595 (Array (_ BitVec 32) (_ BitVec 32)))) (bvule (bvadd (select (select (store |c_#memory_$Pointer$#2.offset| |c_ULTIMATE.start_main_#t~mem37#1.base| v_ArrVal_2594) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) (_ bv20 32)) (select |c_#length| (select (select (store |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_main_#t~mem37#1.base| v_ArrVal_2595) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))))) is different from false [2024-11-13 15:33:44,513 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-13 15:33:44,513 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [346601904] [2024-11-13 15:33:44,513 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [346601904] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 15:33:44,513 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1197203596] [2024-11-13 15:33:44,513 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-13 15:33:44,513 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-13 15:33:44,513 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afbd63cc-39ec-4e64-9612-8b06172106ae/bin/uautomizer-verify-qhAvR1uOyd/cvc4 [2024-11-13 15:33:44,516 INFO L229 MonitoredProcess]: Starting monitored process 37 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afbd63cc-39ec-4e64-9612-8b06172106ae/bin/uautomizer-verify-qhAvR1uOyd/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-13 15:33:44,520 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afbd63cc-39ec-4e64-9612-8b06172106ae/bin/uautomizer-verify-qhAvR1uOyd/cvc4 --incremental --print-success --lang smt (37)] Waiting until timeout for monitored process [2024-11-13 15:33:47,292 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-13 15:33:47,292 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 15:33:47,312 INFO L255 TraceCheckSpWp]: Trace formula consists of 582 conjuncts, 25 conjuncts are in the unsatisfiable core [2024-11-13 15:33:47,316 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:33:49,064 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 15:33:49,064 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 15:33:53,017 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 15:33:53,017 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1197203596] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 15:33:53,017 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 15:33:53,017 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 26, 26] total 58 [2024-11-13 15:33:53,017 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [239950364] [2024-11-13 15:33:53,017 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 15:33:53,018 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 58 states [2024-11-13 15:33:53,018 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-13 15:33:53,019 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 58 interpolants. [2024-11-13 15:33:53,021 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=699, Invalid=2844, Unknown=1, NotChecked=116, Total=3660 [2024-11-13 15:33:53,021 INFO L87 Difference]: Start difference. First operand 3511 states and 4678 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 15:35:28,390 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 15:35:28,390 INFO L93 Difference]: Finished difference Result 3607 states and 4830 transitions. [2024-11-13 15:35:28,391 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 126 states. [2024-11-13 15:35:28,391 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 15:35:28,391 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 15:35:28,399 INFO L225 Difference]: With dead ends: 3607 [2024-11-13 15:35:28,399 INFO L226 Difference]: Without dead ends: 3595 [2024-11-13 15:35:28,403 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 392 GetRequests, 237 SyntacticMatches, 1 SemanticMatches, 154 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 4856 ImplicationChecksByTransitivity, 26.5s TimeCoverageRelationStatistics Valid=5256, Invalid=18617, Unknown=1, NotChecked=306, Total=24180 [2024-11-13 15:35:28,404 INFO L432 NwaCegarLoop]: 1193 mSDtfsCounter, 1677 mSDsluCounter, 32768 mSDsCounter, 0 mSdLazyCounter, 26591 mSolverCounterSat, 74 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 64.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1688 SdHoareTripleChecker+Valid, 33961 SdHoareTripleChecker+Invalid, 26665 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.4s SdHoareTripleChecker+Time, 74 IncrementalHoareTripleChecker+Valid, 26591 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 73.1s IncrementalHoareTripleChecker+Time [2024-11-13 15:35:28,404 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1688 Valid, 33961 Invalid, 26665 Unknown, 0 Unchecked, 0.4s Time], IncrementalHoareTripleChecker [74 Valid, 26591 Invalid, 0 Unknown, 0 Unchecked, 73.1s Time] [2024-11-13 15:35:28,409 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3595 states. [2024-11-13 15:35:28,450 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3595 to 3593. [2024-11-13 15:35:28,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3593 states, 2825 states have (on average 1.6661946902654867) internal successors, (4707), 3561 states have internal predecessors, (4707), 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 15:35:28,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3593 states to 3593 states and 4771 transitions. [2024-11-13 15:35:28,464 INFO L78 Accepts]: Start accepts. Automaton has 3593 states and 4771 transitions. Word has length 98 [2024-11-13 15:35:28,465 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 15:35:28,465 INFO L471 AbstractCegarLoop]: Abstraction has 3593 states and 4771 transitions. [2024-11-13 15:35:28,465 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 15:35:28,466 INFO L276 IsEmpty]: Start isEmpty. Operand 3593 states and 4771 transitions. [2024-11-13 15:35:28,467 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2024-11-13 15:35:28,467 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 15:35:28,467 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 15:35:28,484 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afbd63cc-39ec-4e64-9612-8b06172106ae/bin/uautomizer-verify-qhAvR1uOyd/cvc4 --incremental --print-success --lang smt (37)] Forceful destruction successful, exit code 0 [2024-11-13 15:35:28,712 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afbd63cc-39ec-4e64-9612-8b06172106ae/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Ended with exit code 0 [2024-11-13 15:35:28,868 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 37 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afbd63cc-39ec-4e64-9612-8b06172106ae/bin/uautomizer-verify-qhAvR1uOyd/cvc4 --incremental --print-success --lang smt,36 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afbd63cc-39ec-4e64-9612-8b06172106ae/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:35:28,869 INFO L396 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr390REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 1088 more)] === [2024-11-13 15:35:28,869 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:35:28,869 INFO L85 PathProgramCache]: Analyzing trace with hash -2114040540, now seen corresponding path program 1 times [2024-11-13 15:35:28,870 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-13 15:35:28,870 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1936066528] [2024-11-13 15:35:28,870 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:35:28,870 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:35:28,870 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afbd63cc-39ec-4e64-9612-8b06172106ae/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:35:28,873 INFO L229 MonitoredProcess]: Starting monitored process 38 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afbd63cc-39ec-4e64-9612-8b06172106ae/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 15:35:28,876 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afbd63cc-39ec-4e64-9612-8b06172106ae/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Waiting until timeout for monitored process [2024-11-13 15:35:29,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:35:29,764 INFO L255 TraceCheckSpWp]: Trace formula consists of 824 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-13 15:35:29,767 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:35:29,776 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-13 15:35:29,777 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-13 15:35:29,778 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-13 15:35:29,780 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 15:35:30,109 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-13 15:35:30,109 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 15:35:30,139 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 15:35:30,140 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 15:35:30,140 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-13 15:35:30,140 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1936066528] [2024-11-13 15:35:30,140 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1936066528] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 15:35:30,140 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 15:35:30,141 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-13 15:35:30,141 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [402271587] [2024-11-13 15:35:30,141 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 15:35:30,141 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-13 15:35:30,141 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-13 15:35:30,142 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-13 15:35:30,142 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-13 15:35:30,142 INFO L87 Difference]: Start difference. First operand 3593 states and 4771 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 15:35:31,619 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 15:35:31,619 INFO L93 Difference]: Finished difference Result 3750 states and 4661 transitions. [2024-11-13 15:35:31,620 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-13 15:35:31,620 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 15:35:31,620 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 15:35:31,634 INFO L225 Difference]: With dead ends: 3750 [2024-11-13 15:35:31,634 INFO L226 Difference]: Without dead ends: 3750 [2024-11-13 15:35:31,634 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 15:35:31,635 INFO L432 NwaCegarLoop]: 2115 mSDtfsCounter, 770 mSDsluCounter, 5913 mSDsCounter, 0 mSdLazyCounter, 286 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 776 SdHoareTripleChecker+Valid, 8028 SdHoareTripleChecker+Invalid, 286 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 286 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2024-11-13 15:35:31,635 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [776 Valid, 8028 Invalid, 286 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 286 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2024-11-13 15:35:31,640 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3750 states. [2024-11-13 15:35:31,739 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3750 to 3189. [2024-11-13 15:35:31,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3189 states, 2422 states have (on average 1.698596201486375) internal successors, (4114), 3160 states have internal predecessors, (4114), 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 15:35:31,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3189 states to 3189 states and 4171 transitions. [2024-11-13 15:35:31,752 INFO L78 Accepts]: Start accepts. Automaton has 3189 states and 4171 transitions. Word has length 120 [2024-11-13 15:35:31,752 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 15:35:31,752 INFO L471 AbstractCegarLoop]: Abstraction has 3189 states and 4171 transitions. [2024-11-13 15:35:31,752 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 15:35:31,752 INFO L276 IsEmpty]: Start isEmpty. Operand 3189 states and 4171 transitions. [2024-11-13 15:35:31,753 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2024-11-13 15:35:31,753 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 15:35:31,754 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 15:35:31,799 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afbd63cc-39ec-4e64-9612-8b06172106ae/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Ended with exit code 0 [2024-11-13 15:35:31,954 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 38 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afbd63cc-39ec-4e64-9612-8b06172106ae/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:35:31,955 INFO L396 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr86REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 1088 more)] === [2024-11-13 15:35:31,956 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:35:31,956 INFO L85 PathProgramCache]: Analyzing trace with hash -1274978828, now seen corresponding path program 1 times [2024-11-13 15:35:31,957 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-13 15:35:31,957 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [621531957] [2024-11-13 15:35:31,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:35:31,957 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:35:31,957 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afbd63cc-39ec-4e64-9612-8b06172106ae/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:35:31,961 INFO L229 MonitoredProcess]: Starting monitored process 39 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afbd63cc-39ec-4e64-9612-8b06172106ae/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 15:35:31,964 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afbd63cc-39ec-4e64-9612-8b06172106ae/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Waiting until timeout for monitored process [2024-11-13 15:35:32,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:35:32,872 INFO L255 TraceCheckSpWp]: Trace formula consists of 844 conjuncts, 57 conjuncts are in the unsatisfiable core [2024-11-13 15:35:32,880 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:35:33,052 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2024-11-13 15:35:33,052 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 15:35:33,073 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 15:35:34,041 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-13 15:35:34,041 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 15:35:34,193 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-13 15:35:34,193 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 15:35:34,218 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 15:35:34,253 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 15:35:34,253 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 15:35:34,393 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_3624 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (_ bv1 1) (select |c_#valid| (let ((.cse0 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (store |c_#memory_$Pointer$#2.base| (select (select |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse0) v_ArrVal_3624) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0)))))) is different from false [2024-11-13 15:35:35,045 INFO L349 Elim1Store]: treesize reduction 7, result has 77.4 percent of original size [2024-11-13 15:35:35,046 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 15:35:35,059 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_3624 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_3670 (Array (_ BitVec 32) (_ BitVec 32)))) (= (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (let ((.cse0 (store |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_main_#t~mem37#1.base| v_ArrVal_3670))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_3624)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)) |c_ULTIMATE.start_main_#t~mem37#1.base|)) is different from false [2024-11-13 15:35:35,063 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-13 15:35:35,063 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [621531957] [2024-11-13 15:35:35,063 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [621531957] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 15:35:35,063 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [990642137] [2024-11-13 15:35:35,063 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:35:35,063 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-13 15:35:35,063 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afbd63cc-39ec-4e64-9612-8b06172106ae/bin/uautomizer-verify-qhAvR1uOyd/cvc4 [2024-11-13 15:35:35,068 INFO L229 MonitoredProcess]: Starting monitored process 40 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afbd63cc-39ec-4e64-9612-8b06172106ae/bin/uautomizer-verify-qhAvR1uOyd/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-13 15:35:35,070 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afbd63cc-39ec-4e64-9612-8b06172106ae/bin/uautomizer-verify-qhAvR1uOyd/cvc4 --incremental --print-success --lang smt (40)] Waiting until timeout for monitored process [2024-11-13 15:35:40,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:35:40,438 INFO L255 TraceCheckSpWp]: Trace formula consists of 844 conjuncts, 62 conjuncts are in the unsatisfiable core [2024-11-13 15:35:40,450 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:35:40,457 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 15:35:40,694 INFO L349 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2024-11-13 15:35:40,694 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 15:35:40,797 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 15:35:41,034 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 15:35:42,934 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-13 15:35:42,934 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 15:35:43,257 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-13 15:35:43,257 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 15:35:43,302 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 15:35:43,387 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 15:35:43,387 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 15:35:43,412 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_4093 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (_ bv1 1) (select |c_#valid| (select (select (store |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_main_#t~mem39#1.base| v_ArrVal_4093) |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 15:35:43,425 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_4093 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (select |c_#valid| (let ((.cse0 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (store |c_#memory_$Pointer$#2.base| (select (select |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse0) v_ArrVal_4093) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0))) (_ bv1 1)))) is different from false [2024-11-13 15:35:44,047 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_4093 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_4139 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (_ bv1 1) (select |c_#valid| (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (let ((.cse0 (store |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_main_#t~mem37#1.base| v_ArrVal_4139))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_4093)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))))) is different from false [2024-11-13 15:35:44,050 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [990642137] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 15:35:44,050 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-13 15:35:44,050 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 9] total 18 [2024-11-13 15:35:44,050 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1207224214] [2024-11-13 15:35:44,050 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-13 15:35:44,051 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-11-13 15:35:44,051 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-13 15:35:44,052 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-11-13 15:35:44,052 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=348, Unknown=12, NotChecked=210, Total=650 [2024-11-13 15:35:44,052 INFO L87 Difference]: Start difference. First operand 3189 states and 4171 transitions. Second operand has 19 states, 16 states have (on average 6.3125) 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 15:36:10,589 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 15:36:10,589 INFO L93 Difference]: Finished difference Result 3190 states and 4173 transitions. [2024-11-13 15:36:10,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-13 15:36:10,590 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 16 states have (on average 6.3125) 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 15:36:10,590 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 15:36:10,601 INFO L225 Difference]: With dead ends: 3190 [2024-11-13 15:36:10,601 INFO L226 Difference]: Without dead ends: 3190 [2024-11-13 15:36:10,601 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 261 GetRequests, 233 SyntacticMatches, 1 SemanticMatches, 27 ConstructedPredicates, 5 IntricatePredicates, 0 DeprecatedPredicates, 119 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=101, Invalid=459, Unknown=12, NotChecked=240, Total=812 [2024-11-13 15:36:10,602 INFO L432 NwaCegarLoop]: 1166 mSDtfsCounter, 1615 mSDsluCounter, 9678 mSDsCounter, 0 mSdLazyCounter, 8767 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 23.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1630 SdHoareTripleChecker+Valid, 10844 SdHoareTripleChecker+Invalid, 8786 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 8767 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 26.0s IncrementalHoareTripleChecker+Time [2024-11-13 15:36:10,602 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1630 Valid, 10844 Invalid, 8786 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [19 Valid, 8767 Invalid, 0 Unknown, 0 Unchecked, 26.0s Time] [2024-11-13 15:36:10,606 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3190 states. [2024-11-13 15:36:10,640 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3190 to 3188. [2024-11-13 15:36:10,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3188 states, 2422 states have (on average 1.6977704376548308) internal successors, (4112), 3159 states have internal predecessors, (4112), 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 15:36:10,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3188 states to 3188 states and 4169 transitions. [2024-11-13 15:36:10,652 INFO L78 Accepts]: Start accepts. Automaton has 3188 states and 4169 transitions. Word has length 123 [2024-11-13 15:36:10,653 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 15:36:10,653 INFO L471 AbstractCegarLoop]: Abstraction has 3188 states and 4169 transitions. [2024-11-13 15:36:10,653 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 16 states have (on average 6.3125) 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 15:36:10,653 INFO L276 IsEmpty]: Start isEmpty. Operand 3188 states and 4169 transitions. [2024-11-13 15:36:10,654 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2024-11-13 15:36:10,654 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 15:36:10,655 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 15:36:10,701 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afbd63cc-39ec-4e64-9612-8b06172106ae/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Ended with exit code 0 [2024-11-13 15:36:10,885 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afbd63cc-39ec-4e64-9612-8b06172106ae/bin/uautomizer-verify-qhAvR1uOyd/cvc4 --incremental --print-success --lang smt (40)] Forceful destruction successful, exit code 0 [2024-11-13 15:36:11,056 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 39 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afbd63cc-39ec-4e64-9612-8b06172106ae/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,40 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afbd63cc-39ec-4e64-9612-8b06172106ae/bin/uautomizer-verify-qhAvR1uOyd/cvc4 --incremental --print-success --lang smt [2024-11-13 15:36:11,056 INFO L396 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr87REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 1088 more)] === [2024-11-13 15:36:11,057 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:36:11,057 INFO L85 PathProgramCache]: Analyzing trace with hash -1274978827, now seen corresponding path program 1 times [2024-11-13 15:36:11,058 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-13 15:36:11,059 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [992141292] [2024-11-13 15:36:11,059 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:36:11,059 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:36:11,059 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afbd63cc-39ec-4e64-9612-8b06172106ae/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:36:11,062 INFO L229 MonitoredProcess]: Starting monitored process 41 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afbd63cc-39ec-4e64-9612-8b06172106ae/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 15:36:11,066 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afbd63cc-39ec-4e64-9612-8b06172106ae/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Waiting until timeout for monitored process [2024-11-13 15:36:12,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:36:12,075 INFO L255 TraceCheckSpWp]: Trace formula consists of 844 conjuncts, 110 conjuncts are in the unsatisfiable core [2024-11-13 15:36:12,090 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:36:12,294 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2024-11-13 15:36:12,294 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 15:36:12,312 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 15:36:12,347 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 15:36:12,354 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 15:36:12,529 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 15:36:12,541 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 15:36:13,802 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-13 15:36:13,802 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 15:36:13,820 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 15:36:13,997 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-13 15:36:13,998 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 15:36:14,008 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 15:36:14,063 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 15:36:14,073 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 15:36:14,120 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 15:36:14,120 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 15:36:14,618 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse2 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (let ((.cse1 (select (select |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (and (forall ((v_ArrVal_4607 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (select (store |c_#memory_$Pointer$#2.offset| .cse1 v_ArrVal_4607) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (bvule (bvadd .cse0 (_ bv4 32)) (bvadd .cse0 (_ bv8 32))))) (forall ((v_ArrVal_4607 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_4608 (Array (_ BitVec 32) (_ BitVec 32)))) (bvule (bvadd (select (select (store |c_#memory_$Pointer$#2.offset| .cse1 v_ArrVal_4607) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2) (_ bv8 32)) (select |c_#length| (select (select (store |c_#memory_$Pointer$#2.base| .cse1 v_ArrVal_4608) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))))))) is different from false [2024-11-13 15:36:16,719 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (and (forall ((v_ArrVal_4607 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_4700 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_4699 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (select (store (store |c_#memory_$Pointer$#2.offset| |c_ULTIMATE.start_main_#t~mem37#1.base| v_ArrVal_4700) (select (select (store |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_main_#t~mem37#1.base| v_ArrVal_4699) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_4607) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (bvule (bvadd (_ bv4 32) .cse0) (bvadd (_ bv8 32) .cse0)))) (forall ((v_ArrVal_4607 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_4700 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_4699 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_4608 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse3 (store |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_main_#t~mem37#1.base| v_ArrVal_4699))) (let ((.cse2 (select (select .cse3 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (bvule (bvadd (_ bv8 32) (select (select (store (store |c_#memory_$Pointer$#2.offset| |c_ULTIMATE.start_main_#t~mem37#1.base| v_ArrVal_4700) .cse2 v_ArrVal_4607) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)) (select |c_#length| (select (select (store .cse3 .cse2 v_ArrVal_4608) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))))))) is different from false [2024-11-13 15:36:16,729 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-13 15:36:16,729 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [992141292] [2024-11-13 15:36:16,729 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [992141292] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 15:36:16,730 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [139454152] [2024-11-13 15:36:16,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:36:16,730 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-13 15:36:16,730 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afbd63cc-39ec-4e64-9612-8b06172106ae/bin/uautomizer-verify-qhAvR1uOyd/cvc4 [2024-11-13 15:36:16,732 INFO L229 MonitoredProcess]: Starting monitored process 42 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afbd63cc-39ec-4e64-9612-8b06172106ae/bin/uautomizer-verify-qhAvR1uOyd/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-13 15:36:16,735 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afbd63cc-39ec-4e64-9612-8b06172106ae/bin/uautomizer-verify-qhAvR1uOyd/cvc4 --incremental --print-success --lang smt (42)] Waiting until timeout for monitored process [2024-11-13 15:37:56,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:37:56,903 INFO L255 TraceCheckSpWp]: Trace formula consists of 844 conjuncts, 112 conjuncts are in the unsatisfiable core [2024-11-13 15:37:56,916 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:37:56,922 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 15:37:57,122 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2024-11-13 15:37:57,122 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 15:37:57,130 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 15:37:57,145 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2024-11-13 15:37:57,170 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 15:37:57,259 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 15:37:57,265 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 15:37:58,109 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-13 15:37:58,109 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 15:37:58,119 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 15:37:58,210 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-13 15:37:58,210 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 15:37:58,217 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 15:37:58,254 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 15:37:58,262 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 15:37:58,270 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 15:37:58,270 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 15:37:58,333 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (and (forall ((v_ArrVal_5169 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (select (store |c_#memory_$Pointer$#2.offset| |c_ULTIMATE.start_main_#t~mem39#1.base| v_ArrVal_5169) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (bvule (bvadd (_ bv4 32) .cse0) (bvadd (_ bv8 32) .cse0)))) (forall ((v_ArrVal_5170 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_5169 (Array (_ BitVec 32) (_ BitVec 32)))) (bvule (bvadd (_ bv8 32) (select (select (store |c_#memory_$Pointer$#2.offset| |c_ULTIMATE.start_main_#t~mem39#1.base| v_ArrVal_5169) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)) (select |c_#length| (select (select (store |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_main_#t~mem39#1.base| v_ArrVal_5170) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))))) is different from false [2024-11-13 15:37:58,366 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (let ((.cse0 (select (select |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (and (forall ((v_ArrVal_5170 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_5169 (Array (_ BitVec 32) (_ BitVec 32)))) (bvule (bvadd (_ bv8 32) (select (select (store |c_#memory_$Pointer$#2.offset| .cse0 v_ArrVal_5169) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)) (select |c_#length| (select (select (store |c_#memory_$Pointer$#2.base| .cse0 v_ArrVal_5170) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))) (forall ((v_ArrVal_5169 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse2 (select (select (store |c_#memory_$Pointer$#2.offset| .cse0 v_ArrVal_5169) |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 15:38:00,207 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (and (forall ((v_ArrVal_5261 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_5262 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_5169 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (select (store (store |c_#memory_$Pointer$#2.offset| |c_ULTIMATE.start_main_#t~mem37#1.base| v_ArrVal_5261) (select (select (store |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_main_#t~mem37#1.base| v_ArrVal_5262) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_5169) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (bvule (bvadd .cse0 (_ bv4 32)) (bvadd .cse0 (_ bv8 32))))) (forall ((v_ArrVal_5261 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_5262 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_5170 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_5169 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse3 (store |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_main_#t~mem37#1.base| v_ArrVal_5262))) (let ((.cse2 (select (select .cse3 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (bvule (bvadd (select (select (store (store |c_#memory_$Pointer$#2.offset| |c_ULTIMATE.start_main_#t~mem37#1.base| v_ArrVal_5261) .cse2 v_ArrVal_5169) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) (_ bv8 32)) (select |c_#length| (select (select (store .cse3 .cse2 v_ArrVal_5170) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))))))) is different from false [2024-11-13 15:38:00,216 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [139454152] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 15:38:00,216 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-13 15:38:00,216 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 9 [2024-11-13 15:38:00,216 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [410588296] [2024-11-13 15:38:00,216 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-13 15:38:00,216 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-13 15:38:00,217 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-13 15:38:00,217 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-13 15:38:00,217 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=122, Unknown=13, NotChecked=130, Total=306 [2024-11-13 15:38:00,217 INFO L87 Difference]: Start difference. First operand 3188 states and 4169 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 15:38:25,916 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 15:38:25,916 INFO L93 Difference]: Finished difference Result 3187 states and 4167 transitions. [2024-11-13 15:38:25,917 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-13 15:38:25,917 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 15:38:25,917 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 15:38:25,924 INFO L225 Difference]: With dead ends: 3187 [2024-11-13 15:38:25,924 INFO L226 Difference]: Without dead ends: 3187 [2024-11-13 15:38:25,924 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 263 GetRequests, 239 SyntacticMatches, 3 SemanticMatches, 21 ConstructedPredicates, 5 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=73, Invalid=236, Unknown=17, NotChecked=180, Total=506 [2024-11-13 15:38:25,925 INFO L432 NwaCegarLoop]: 1195 mSDtfsCounter, 1597 mSDsluCounter, 5285 mSDsCounter, 0 mSdLazyCounter, 9227 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 22.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1606 SdHoareTripleChecker+Valid, 6480 SdHoareTripleChecker+Invalid, 9237 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 9227 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 25.2s IncrementalHoareTripleChecker+Time [2024-11-13 15:38:25,925 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1606 Valid, 6480 Invalid, 9237 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [10 Valid, 9227 Invalid, 0 Unknown, 0 Unchecked, 25.2s Time] [2024-11-13 15:38:25,928 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3187 states. [2024-11-13 15:38:25,958 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3187 to 3187. [2024-11-13 15:38:25,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3187 states, 2422 states have (on average 1.6969446738232865) internal successors, (4110), 3158 states have internal predecessors, (4110), 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 15:38:25,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3187 states to 3187 states and 4167 transitions. [2024-11-13 15:38:25,967 INFO L78 Accepts]: Start accepts. Automaton has 3187 states and 4167 transitions. Word has length 123 [2024-11-13 15:38:25,968 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 15:38:25,968 INFO L471 AbstractCegarLoop]: Abstraction has 3187 states and 4167 transitions. [2024-11-13 15:38:25,968 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 15:38:25,968 INFO L276 IsEmpty]: Start isEmpty. Operand 3187 states and 4167 transitions. [2024-11-13 15:38:25,969 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2024-11-13 15:38:25,969 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 15:38:25,969 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 15:38:26,005 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afbd63cc-39ec-4e64-9612-8b06172106ae/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Ended with exit code 0 [2024-11-13 15:38:26,235 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afbd63cc-39ec-4e64-9612-8b06172106ae/bin/uautomizer-verify-qhAvR1uOyd/cvc4 --incremental --print-success --lang smt (42)] Ended with exit code 0 [2024-11-13 15:38:26,369 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 41 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afbd63cc-39ec-4e64-9612-8b06172106ae/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,42 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afbd63cc-39ec-4e64-9612-8b06172106ae/bin/uautomizer-verify-qhAvR1uOyd/cvc4 --incremental --print-success --lang smt [2024-11-13 15:38:26,370 INFO L396 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr91REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 1088 more)] === [2024-11-13 15:38:26,371 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:38:26,371 INFO L85 PathProgramCache]: Analyzing trace with hash 1796846476, now seen corresponding path program 1 times [2024-11-13 15:38:26,372 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-13 15:38:26,372 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1724491458] [2024-11-13 15:38:26,372 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:38:26,372 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:38:26,372 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afbd63cc-39ec-4e64-9612-8b06172106ae/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:38:26,375 INFO L229 MonitoredProcess]: Starting monitored process 43 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afbd63cc-39ec-4e64-9612-8b06172106ae/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 15:38:26,377 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afbd63cc-39ec-4e64-9612-8b06172106ae/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Waiting until timeout for monitored process [2024-11-13 15:38:27,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:38:27,280 INFO L255 TraceCheckSpWp]: Trace formula consists of 873 conjuncts, 113 conjuncts are in the unsatisfiable core [2024-11-13 15:38:27,293 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:38:27,445 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2024-11-13 15:38:27,445 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 15:38:27,457 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 15:38:27,502 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 15:38:27,511 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 15:38:27,634 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 15:38:27,640 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 15:38:28,439 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-13 15:38:28,439 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 15:38:28,453 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 15:38:28,586 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-13 15:38:28,587 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 15:38:28,600 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 15:38:28,707 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-13 15:38:28,708 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 15:38:28,721 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 15:38:28,746 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 15:38:28,754 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 15:38:28,789 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 15:38:28,789 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 15:38:28,955 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$#2.offset| |c_ULTIMATE.start_main_#t~mem40#1.base| v_ArrVal_5747) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (bvule (bvadd (_ bv8 32) .cse0) (bvadd (_ bv12 32) .cse0)))) (forall ((v_ArrVal_5748 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_5747 (Array (_ BitVec 32) (_ BitVec 32)))) (bvule (bvadd (_ bv12 32) (select (select (store |c_#memory_$Pointer$#2.offset| |c_ULTIMATE.start_main_#t~mem40#1.base| v_ArrVal_5747) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)) (select |c_#length| (select (select (store |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_main_#t~mem40#1.base| v_ArrVal_5748) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))))) is different from false [2024-11-13 15:38:28,985 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (let ((.cse0 (select (select |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (and (forall ((v_ArrVal_5748 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_5747 (Array (_ BitVec 32) (_ BitVec 32)))) (bvule (bvadd (_ bv12 32) (select (select (store |c_#memory_$Pointer$#2.offset| .cse0 v_ArrVal_5747) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)) (select |c_#length| (select (select (store |c_#memory_$Pointer$#2.base| .cse0 v_ArrVal_5748) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))) (forall ((v_ArrVal_5747 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse2 (select (select (store |c_#memory_$Pointer$#2.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 15:38:29,054 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (and (forall ((v_ArrVal_5748 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_5745 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_5746 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_5747 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse2 (store |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_main_#t~mem39#1.base| v_ArrVal_5746))) (let ((.cse0 (select (select .cse2 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (bvule (bvadd (_ bv12 32) (select (select (store (store |c_#memory_$Pointer$#2.offset| |c_ULTIMATE.start_main_#t~mem39#1.base| v_ArrVal_5745) .cse0 v_ArrVal_5747) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)) (select |c_#length| (select (select (store .cse2 .cse0 v_ArrVal_5748) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))))) (forall ((v_ArrVal_5745 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_5746 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_5747 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse3 (select (select (store (store |c_#memory_$Pointer$#2.offset| |c_ULTIMATE.start_main_#t~mem39#1.base| v_ArrVal_5745) (select (select (store |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_main_#t~mem39#1.base| v_ArrVal_5746) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_5747) |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 15:38:29,204 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse2 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (let ((.cse1 (select (select |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (and (forall ((v_ArrVal_5745 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_5746 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_5747 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (select (store (store |c_#memory_$Pointer$#2.offset| .cse1 v_ArrVal_5745) (select (select (store |c_#memory_$Pointer$#2.base| .cse1 v_ArrVal_5746) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2) v_ArrVal_5747) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (bvule (bvadd (_ bv8 32) .cse0) (bvadd (_ bv12 32) .cse0)))) (forall ((v_ArrVal_5748 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_5745 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_5746 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_5747 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse4 (store |c_#memory_$Pointer$#2.base| .cse1 v_ArrVal_5746))) (let ((.cse3 (select (select .cse4 |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (bvule (bvadd (_ bv12 32) (select (select (store (store |c_#memory_$Pointer$#2.offset| .cse1 v_ArrVal_5745) .cse3 v_ArrVal_5747) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2)) (select |c_#length| (select (select (store .cse4 .cse3 v_ArrVal_5748) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))))))))) is different from false [2024-11-13 15:38:31,156 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse2 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (and (forall ((v_ArrVal_5748 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_5839 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_5745 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_5746 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_5747 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_5840 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse4 (store |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_main_#t~mem37#1.base| v_ArrVal_5840))) (let ((.cse0 (select (select .cse4 |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (let ((.cse3 (store .cse4 .cse0 v_ArrVal_5746))) (let ((.cse1 (select (select .cse3 |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (bvule (bvadd (_ bv12 32) (select (select (store (store (store |c_#memory_$Pointer$#2.offset| |c_ULTIMATE.start_main_#t~mem37#1.base| v_ArrVal_5839) .cse0 v_ArrVal_5745) .cse1 v_ArrVal_5747) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2)) (select |c_#length| (select (select (store .cse3 .cse1 v_ArrVal_5748) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2)))))))) (forall ((v_ArrVal_5839 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_5745 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_5746 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_5747 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_5840 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse5 (select (select (let ((.cse7 (store |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_main_#t~mem37#1.base| v_ArrVal_5840))) (let ((.cse6 (select (select .cse7 |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (store (store (store |c_#memory_$Pointer$#2.offset| |c_ULTIMATE.start_main_#t~mem37#1.base| v_ArrVal_5839) .cse6 v_ArrVal_5745) (select (select (store .cse7 .cse6 v_ArrVal_5746) |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 15:38:31,170 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-13 15:38:31,171 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1724491458] [2024-11-13 15:38:31,171 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1724491458] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 15:38:31,171 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [547649671] [2024-11-13 15:38:31,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:38:31,171 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-13 15:38:31,171 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afbd63cc-39ec-4e64-9612-8b06172106ae/bin/uautomizer-verify-qhAvR1uOyd/cvc4 [2024-11-13 15:38:31,175 INFO L229 MonitoredProcess]: Starting monitored process 44 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afbd63cc-39ec-4e64-9612-8b06172106ae/bin/uautomizer-verify-qhAvR1uOyd/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-13 15:38:31,176 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afbd63cc-39ec-4e64-9612-8b06172106ae/bin/uautomizer-verify-qhAvR1uOyd/cvc4 --incremental --print-success --lang smt (44)] Waiting until timeout for monitored process [2024-11-13 15:38:57,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:38:57,712 INFO L255 TraceCheckSpWp]: Trace formula consists of 873 conjuncts, 115 conjuncts are in the unsatisfiable core [2024-11-13 15:38:57,725 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:38:57,729 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 15:38:57,950 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2024-11-13 15:38:57,950 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 15:38:57,962 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 15:38:57,974 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 15:38:57,985 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 15:38:58,096 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 15:38:58,103 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 15:38:59,093 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-13 15:38:59,093 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 15:38:59,100 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 15:38:59,203 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-13 15:38:59,203 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 15:38:59,219 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 15:38:59,289 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-13 15:38:59,290 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 62 treesize of output 57 [2024-11-13 15:38:59,297 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 15:38:59,332 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 15:38:59,342 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 15:38:59,347 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 15:38:59,347 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 15:38:59,424 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$#2.offset| |c_ULTIMATE.start_main_#t~mem40#1.base| v_ArrVal_6326) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (bvule (bvadd (_ bv8 32) .cse0) (bvadd (_ bv12 32) .cse0)))) (forall ((v_ArrVal_6327 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_6326 (Array (_ BitVec 32) (_ BitVec 32)))) (bvule (bvadd (_ bv12 32) (select (select (store |c_#memory_$Pointer$#2.offset| |c_ULTIMATE.start_main_#t~mem40#1.base| v_ArrVal_6326) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)) (select |c_#length| (select (select (store |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_main_#t~mem40#1.base| v_ArrVal_6327) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))))) is different from false [2024-11-13 15:38:59,465 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse2 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (let ((.cse1 (select (select |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (and (forall ((v_ArrVal_6326 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (select (store |c_#memory_$Pointer$#2.offset| .cse1 v_ArrVal_6326) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (bvule (bvadd (_ bv8 32) .cse0) (bvadd (_ bv12 32) .cse0)))) (forall ((v_ArrVal_6327 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_6326 (Array (_ BitVec 32) (_ BitVec 32)))) (bvule (bvadd (_ bv12 32) (select (select (store |c_#memory_$Pointer$#2.offset| .cse1 v_ArrVal_6326) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2)) (select |c_#length| (select (select (store |c_#memory_$Pointer$#2.base| .cse1 v_ArrVal_6327) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))))))) is different from false [2024-11-13 15:38:59,540 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (and (forall ((v_ArrVal_6324 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_6325 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_6326 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (select (store (store |c_#memory_$Pointer$#2.offset| |c_ULTIMATE.start_main_#t~mem39#1.base| v_ArrVal_6325) (select (select (store |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_main_#t~mem39#1.base| v_ArrVal_6324) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_6326) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (bvule (bvadd .cse0 (_ bv8 32)) (bvadd .cse0 (_ bv12 32))))) (forall ((v_ArrVal_6327 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_6324 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_6325 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_6326 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse3 (store |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_main_#t~mem39#1.base| v_ArrVal_6324))) (let ((.cse2 (select (select .cse3 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (bvule (bvadd (select (select (store (store |c_#memory_$Pointer$#2.offset| |c_ULTIMATE.start_main_#t~mem39#1.base| v_ArrVal_6325) .cse2 v_ArrVal_6326) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) (_ bv12 32)) (select |c_#length| (select (select (store .cse3 .cse2 v_ArrVal_6327) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))))))) is different from false [2024-11-13 15:38:59,596 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse2 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (let ((.cse0 (select (select |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (and (forall ((v_ArrVal_6327 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_6324 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_6325 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_6326 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse3 (store |c_#memory_$Pointer$#2.base| .cse0 v_ArrVal_6324))) (let ((.cse1 (select (select .cse3 |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (bvule (bvadd (_ bv12 32) (select (select (store (store |c_#memory_$Pointer$#2.offset| .cse0 v_ArrVal_6325) .cse1 v_ArrVal_6326) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2)) (select |c_#length| (select (select (store .cse3 .cse1 v_ArrVal_6327) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2)))))) (forall ((v_ArrVal_6324 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_6325 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_6326 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse4 (select (select (store (store |c_#memory_$Pointer$#2.offset| .cse0 v_ArrVal_6325) (select (select (store |c_#memory_$Pointer$#2.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 15:39:01,273 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse3 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (and (forall ((v_ArrVal_6419 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_6418 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_6324 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_6325 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_6326 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (select (let ((.cse2 (store |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_main_#t~mem37#1.base| v_ArrVal_6419))) (let ((.cse1 (select (select .cse2 |c_ULTIMATE.start_main_~user~0#1.base|) .cse3))) (store (store (store |c_#memory_$Pointer$#2.offset| |c_ULTIMATE.start_main_#t~mem37#1.base| v_ArrVal_6418) .cse1 v_ArrVal_6325) (select (select (store .cse2 .cse1 v_ArrVal_6324) |c_ULTIMATE.start_main_~user~0#1.base|) .cse3) v_ArrVal_6326))) |c_ULTIMATE.start_main_~user~0#1.base|) .cse3))) (bvule (bvadd (_ bv8 32) .cse0) (bvadd (_ bv12 32) .cse0)))) (forall ((v_ArrVal_6419 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_6327 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_6418 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_6324 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_6325 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_6326 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse7 (store |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_main_#t~mem37#1.base| v_ArrVal_6419))) (let ((.cse4 (select (select .cse7 |c_ULTIMATE.start_main_~user~0#1.base|) .cse3))) (let ((.cse6 (store .cse7 .cse4 v_ArrVal_6324))) (let ((.cse5 (select (select .cse6 |c_ULTIMATE.start_main_~user~0#1.base|) .cse3))) (bvule (bvadd (_ bv12 32) (select (select (store (store (store |c_#memory_$Pointer$#2.offset| |c_ULTIMATE.start_main_#t~mem37#1.base| v_ArrVal_6418) .cse4 v_ArrVal_6325) .cse5 v_ArrVal_6326) |c_ULTIMATE.start_main_~user~0#1.base|) .cse3)) (select |c_#length| (select (select (store .cse6 .cse5 v_ArrVal_6327) |c_ULTIMATE.start_main_~user~0#1.base|) .cse3)))))))))) is different from false [2024-11-13 15:39:01,287 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [547649671] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 15:39:01,287 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-13 15:39:01,287 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 10 [2024-11-13 15:39:01,287 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [911737472] [2024-11-13 15:39:01,287 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-13 15:39:01,288 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-13 15:39:01,288 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-13 15:39:01,288 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-13 15:39:01,289 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=134, Unknown=10, NotChecked=310, Total=506 [2024-11-13 15:39:01,289 INFO L87 Difference]: Start difference. First operand 3187 states and 4167 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 15:39:20,380 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 15:39:20,380 INFO L93 Difference]: Finished difference Result 3186 states and 4165 transitions. [2024-11-13 15:39:20,381 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-13 15:39:20,381 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 15:39:20,381 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 15:39:20,399 INFO L225 Difference]: With dead ends: 3186 [2024-11-13 15:39:20,399 INFO L226 Difference]: Without dead ends: 3186 [2024-11-13 15:39:20,399 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 276 GetRequests, 246 SyntacticMatches, 3 SemanticMatches, 27 ConstructedPredicates, 10 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=90, Invalid=282, Unknown=10, NotChecked=430, Total=812 [2024-11-13 15:39:20,399 INFO L432 NwaCegarLoop]: 1194 mSDtfsCounter, 1597 mSDsluCounter, 3098 mSDsCounter, 0 mSdLazyCounter, 5655 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 16.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1606 SdHoareTripleChecker+Valid, 4292 SdHoareTripleChecker+Invalid, 5665 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 5655 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 18.6s IncrementalHoareTripleChecker+Time [2024-11-13 15:39:20,400 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1606 Valid, 4292 Invalid, 5665 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [10 Valid, 5655 Invalid, 0 Unknown, 0 Unchecked, 18.6s Time] [2024-11-13 15:39:20,401 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3186 states. [2024-11-13 15:39:20,426 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3186 to 3186. [2024-11-13 15:39:20,429 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3186 states, 2422 states have (on average 1.6961189099917424) internal successors, (4108), 3157 states have internal predecessors, (4108), 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 15:39:20,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3186 states to 3186 states and 4165 transitions. [2024-11-13 15:39:20,434 INFO L78 Accepts]: Start accepts. Automaton has 3186 states and 4165 transitions. Word has length 126 [2024-11-13 15:39:20,434 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 15:39:20,434 INFO L471 AbstractCegarLoop]: Abstraction has 3186 states and 4165 transitions. [2024-11-13 15:39:20,435 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 15:39:20,435 INFO L276 IsEmpty]: Start isEmpty. Operand 3186 states and 4165 transitions. [2024-11-13 15:39:20,435 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2024-11-13 15:39:20,435 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 15:39:20,435 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 15:39:20,457 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afbd63cc-39ec-4e64-9612-8b06172106ae/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Forceful destruction successful, exit code 0 [2024-11-13 15:39:20,667 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afbd63cc-39ec-4e64-9612-8b06172106ae/bin/uautomizer-verify-qhAvR1uOyd/cvc4 --incremental --print-success --lang smt (44)] Ended with exit code 0 [2024-11-13 15:39:20,836 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 43 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afbd63cc-39ec-4e64-9612-8b06172106ae/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,44 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afbd63cc-39ec-4e64-9612-8b06172106ae/bin/uautomizer-verify-qhAvR1uOyd/cvc4 --incremental --print-success --lang smt [2024-11-13 15:39:20,836 INFO L396 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr90REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 1088 more)] === [2024-11-13 15:39:20,836 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:39:20,837 INFO L85 PathProgramCache]: Analyzing trace with hash 1796846475, now seen corresponding path program 1 times [2024-11-13 15:39:20,837 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-13 15:39:20,837 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [836187232] [2024-11-13 15:39:20,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:39:20,837 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:39:20,837 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afbd63cc-39ec-4e64-9612-8b06172106ae/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:39:20,839 INFO L229 MonitoredProcess]: Starting monitored process 45 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afbd63cc-39ec-4e64-9612-8b06172106ae/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 15:39:20,841 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afbd63cc-39ec-4e64-9612-8b06172106ae/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (45)] Waiting until timeout for monitored process [2024-11-13 15:39:21,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:39:21,670 INFO L255 TraceCheckSpWp]: Trace formula consists of 873 conjuncts, 60 conjuncts are in the unsatisfiable core [2024-11-13 15:39:21,677 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:39:21,681 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 15:39:21,925 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2024-11-13 15:39:21,929 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 15:39:21,968 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 15:39:22,530 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-13 15:39:22,531 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 15:39:22,642 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-13 15:39:22,642 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 15:39:22,758 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-13 15:39:22,758 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 15:39:22,849 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 15:39:22,900 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 15:39:22,900 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 15:39:22,998 INFO L349 Elim1Store]: treesize reduction 7, result has 63.2 percent of original size [2024-11-13 15:39:22,999 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 15:39:23,011 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_6857 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_ULTIMATE.start_main_#t~mem40#1.base| (select (select (store |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_main_#t~mem40#1.base| v_ArrVal_6857) |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 15:39:23,027 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_6857 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (let ((.cse0 (select (select |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (= .cse0 (select (select (store |c_#memory_$Pointer$#2.base| .cse0 v_ArrVal_6857) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))))) is different from false [2024-11-13 15:39:23,055 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_6856 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_6857 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse1 (store |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_main_#t~mem39#1.base| v_ArrVal_6856)) (.cse2 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (let ((.cse0 (select (select .cse1 |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (= .cse0 (select (select (store .cse1 .cse0 v_ArrVal_6857) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))))) is different from false [2024-11-13 15:39:23,075 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_6856 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_6857 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse2 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (let ((.cse0 (store |c_#memory_$Pointer$#2.base| (select (select |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse2) v_ArrVal_6856))) (let ((.cse1 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (= (select (select (store .cse0 .cse1 v_ArrVal_6857) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2) .cse1))))) is different from false [2024-11-13 15:39:23,665 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_6903 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_6856 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_6857 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse2 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (let ((.cse1 (let ((.cse3 (store |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_main_#t~mem37#1.base| v_ArrVal_6903))) (store .cse3 (select (select .cse3 |c_ULTIMATE.start_main_~user~0#1.base|) .cse2) v_ArrVal_6856)))) (let ((.cse0 (select (select .cse1 |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (= .cse0 (select (select (store .cse1 .cse0 v_ArrVal_6857) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2)))))) is different from false [2024-11-13 15:39:23,669 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-13 15:39:23,669 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [836187232] [2024-11-13 15:39:23,669 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [836187232] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 15:39:23,669 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1574606510] [2024-11-13 15:39:23,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:39:23,669 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-13 15:39:23,669 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afbd63cc-39ec-4e64-9612-8b06172106ae/bin/uautomizer-verify-qhAvR1uOyd/cvc4 [2024-11-13 15:39:23,673 INFO L229 MonitoredProcess]: Starting monitored process 46 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afbd63cc-39ec-4e64-9612-8b06172106ae/bin/uautomizer-verify-qhAvR1uOyd/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-13 15:39:23,675 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afbd63cc-39ec-4e64-9612-8b06172106ae/bin/uautomizer-verify-qhAvR1uOyd/cvc4 --incremental --print-success --lang smt (46)] Waiting until timeout for monitored process [2024-11-13 15:39:45,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:39:45,565 INFO L255 TraceCheckSpWp]: Trace formula consists of 873 conjuncts, 64 conjuncts are in the unsatisfiable core [2024-11-13 15:39:45,574 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:39:45,584 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 15:39:45,862 INFO L349 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2024-11-13 15:39:45,862 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 15:39:45,952 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 15:39:46,173 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 15:39:47,727 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-13 15:39:47,727 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 15:39:47,954 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-13 15:39:47,954 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 15:39:48,124 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-13 15:39:48,125 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 15:39:48,163 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 15:39:48,254 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 15:39:48,254 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 15:39:48,414 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_7342 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (_ bv1 1) (select |c_#valid| (let ((.cse0 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (store |c_#memory_$Pointer$#2.base| (select (select |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse0) v_ArrVal_7342) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0)))))) is different from false [2024-11-13 15:39:48,436 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_7341 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7342 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (_ bv1 1) (select |c_#valid| (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (let ((.cse0 (store |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_main_#t~mem39#1.base| v_ArrVal_7341))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_7342)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))))) is different from false [2024-11-13 15:39:48,451 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_7341 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7342 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (_ bv1 1) (select |c_#valid| (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (let ((.cse0 (store |c_#memory_$Pointer$#2.base| (select (select |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_7341))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_7342)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))))) is different from false [2024-11-13 15:39:49,027 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_7341 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7342 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7388 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (_ bv1 1) (select |c_#valid| (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (let ((.cse0 (let ((.cse2 (store |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_main_#t~mem37#1.base| v_ArrVal_7388))) (store .cse2 (select (select .cse2 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_7341)))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_7342)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))))) is different from false [2024-11-13 15:39:49,031 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1574606510] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 15:39:49,032 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-13 15:39:49,032 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10] total 19 [2024-11-13 15:39:49,032 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2074529402] [2024-11-13 15:39:49,032 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-13 15:39:49,032 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-11-13 15:39:49,032 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-13 15:39:49,033 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-11-13 15:39:49,033 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=380, Unknown=23, NotChecked=432, Total=930 [2024-11-13 15:39:49,033 INFO L87 Difference]: Start difference. First operand 3186 states and 4165 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 15:40:21,091 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 15:40:21,091 INFO L93 Difference]: Finished difference Result 3187 states and 4167 transitions. [2024-11-13 15:40:21,091 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-13 15:40:21,092 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 15:40:21,092 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 15:40:21,094 INFO L225 Difference]: With dead ends: 3187 [2024-11-13 15:40:21,094 INFO L226 Difference]: Without dead ends: 3187 [2024-11-13 15:40:21,095 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 271 GetRequests, 240 SyntacticMatches, 1 SemanticMatches, 30 ConstructedPredicates, 9 IntricatePredicates, 0 DeprecatedPredicates, 99 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=104, Invalid=415, Unknown=23, NotChecked=450, Total=992 [2024-11-13 15:40:21,095 INFO L432 NwaCegarLoop]: 1168 mSDtfsCounter, 1605 mSDsluCounter, 11938 mSDsCounter, 0 mSdLazyCounter, 10284 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 28.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1620 SdHoareTripleChecker+Valid, 13106 SdHoareTripleChecker+Invalid, 10301 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 10284 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 31.7s IncrementalHoareTripleChecker+Time [2024-11-13 15:40:21,096 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1620 Valid, 13106 Invalid, 10301 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [17 Valid, 10284 Invalid, 0 Unknown, 0 Unchecked, 31.7s Time] [2024-11-13 15:40:21,099 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3187 states. [2024-11-13 15:40:21,123 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3187 to 3185. [2024-11-13 15:40:21,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3185 states, 2422 states have (on average 1.695293146160198) internal successors, (4106), 3156 states have internal predecessors, (4106), 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 15:40:21,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3185 states to 3185 states and 4163 transitions. [2024-11-13 15:40:21,133 INFO L78 Accepts]: Start accepts. Automaton has 3185 states and 4163 transitions. Word has length 126 [2024-11-13 15:40:21,133 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 15:40:21,133 INFO L471 AbstractCegarLoop]: Abstraction has 3185 states and 4163 transitions. [2024-11-13 15:40:21,133 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 15:40:21,133 INFO L276 IsEmpty]: Start isEmpty. Operand 3185 states and 4163 transitions. [2024-11-13 15:40:21,134 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2024-11-13 15:40:21,134 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 15:40:21,134 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 15:40:21,167 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afbd63cc-39ec-4e64-9612-8b06172106ae/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (45)] Forceful destruction successful, exit code 0 [2024-11-13 15:40:21,363 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afbd63cc-39ec-4e64-9612-8b06172106ae/bin/uautomizer-verify-qhAvR1uOyd/cvc4 --incremental --print-success --lang smt (46)] Ended with exit code 0 [2024-11-13 15:40:21,535 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 45 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afbd63cc-39ec-4e64-9612-8b06172106ae/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,46 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afbd63cc-39ec-4e64-9612-8b06172106ae/bin/uautomizer-verify-qhAvR1uOyd/cvc4 --incremental --print-success --lang smt [2024-11-13 15:40:21,535 INFO L396 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr94REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 1088 more)] === [2024-11-13 15:40:21,536 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:40:21,536 INFO L85 PathProgramCache]: Analyzing trace with hash 1676279227, now seen corresponding path program 1 times [2024-11-13 15:40:21,536 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-13 15:40:21,536 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1742210689] [2024-11-13 15:40:21,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:40:21,537 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:40:21,537 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afbd63cc-39ec-4e64-9612-8b06172106ae/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:40:21,538 INFO L229 MonitoredProcess]: Starting monitored process 47 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afbd63cc-39ec-4e64-9612-8b06172106ae/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 15:40:21,539 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afbd63cc-39ec-4e64-9612-8b06172106ae/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (47)] Waiting until timeout for monitored process [2024-11-13 15:40:22,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:40:22,431 INFO L255 TraceCheckSpWp]: Trace formula consists of 902 conjuncts, 62 conjuncts are in the unsatisfiable core [2024-11-13 15:40:22,440 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:40:22,447 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2024-11-13 15:40:22,721 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2024-11-13 15:40:22,721 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 15:40:22,749 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 15:40:23,241 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-13 15:40:23,241 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 15:40:23,337 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-13 15:40:23,337 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 15:40:23,437 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-13 15:40:23,437 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 15:40:23,615 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-13 15:40:23,615 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 44 treesize of output 43 [2024-11-13 15:40:23,642 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 15:40:23,686 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 15:40:23,686 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 15:40:23,756 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_7842 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (_ bv1 1) (select |c_#valid| (select (select (store |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_main_#t~mem41#1.base| v_ArrVal_7842) |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 15:40:23,769 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_7842 (Array (_ BitVec 32) (_ BitVec 32)))) (= (bvadd (_ bv1 1) (select |c_#valid| (let ((.cse0 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (store |c_#memory_$Pointer$#2.base| (select (select |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse0) v_ArrVal_7842) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0)))) (_ bv0 1))) is different from false [2024-11-13 15:40:23,806 INFO L349 Elim1Store]: treesize reduction 7, result has 77.4 percent of original size [2024-11-13 15:40:23,806 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 15:40:23,819 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_7842 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7841 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_ULTIMATE.start_main_#t~mem40#1.base| (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (let ((.cse0 (store |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_main_#t~mem40#1.base| v_ArrVal_7841))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_7842)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))) is different from false [2024-11-13 15:40:23,834 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_7842 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7841 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (let ((.cse2 (select (select |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (= (select (select (let ((.cse0 (store |c_#memory_$Pointer$#2.base| .cse2 v_ArrVal_7841))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_7842)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) .cse2)))) is different from false [2024-11-13 15:40:23,879 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_7842 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7841 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7840 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse2 (store |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_main_#t~mem39#1.base| v_ArrVal_7840)) (.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_7841))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_7842)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) .cse3)))) is different from false [2024-11-13 15:40:23,897 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_7842 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7841 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7840 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (let ((.cse2 (store |c_#memory_$Pointer$#2.base| (select (select |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_7840))) (let ((.cse3 (select (select .cse2 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (= (select (select (let ((.cse0 (store .cse2 .cse3 v_ArrVal_7841))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_7842)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) .cse3))))) is different from false [2024-11-13 15:40:24,471 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_7888 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7842 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7841 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7840 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (let ((.cse2 (let ((.cse4 (store |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_main_#t~mem37#1.base| v_ArrVal_7888))) (store .cse4 (select (select .cse4 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_7840)))) (let ((.cse3 (select (select .cse2 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (= (select (select (let ((.cse0 (store .cse2 .cse3 v_ArrVal_7841))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_7842)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) .cse3))))) is different from false [2024-11-13 15:40:24,474 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-13 15:40:24,474 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1742210689] [2024-11-13 15:40:24,475 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1742210689] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 15:40:24,475 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [936692040] [2024-11-13 15:40:24,475 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:40:24,475 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-13 15:40:24,475 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afbd63cc-39ec-4e64-9612-8b06172106ae/bin/uautomizer-verify-qhAvR1uOyd/cvc4 [2024-11-13 15:40:24,477 INFO L229 MonitoredProcess]: Starting monitored process 48 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afbd63cc-39ec-4e64-9612-8b06172106ae/bin/uautomizer-verify-qhAvR1uOyd/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-13 15:40:24,479 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afbd63cc-39ec-4e64-9612-8b06172106ae/bin/uautomizer-verify-qhAvR1uOyd/cvc4 --incremental --print-success --lang smt (48)] Waiting until timeout for monitored process [2024-11-13 15:41:08,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:41:08,279 INFO L255 TraceCheckSpWp]: Trace formula consists of 902 conjuncts, 66 conjuncts are in the unsatisfiable core [2024-11-13 15:41:08,286 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:41:08,291 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 15:41:08,489 INFO L349 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2024-11-13 15:41:08,489 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 15:41:08,553 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 15:41:08,761 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 12 [2024-11-13 15:41:10,368 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-13 15:41:10,369 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 15:41:10,621 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-13 15:41:10,621 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 15:41:10,792 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-13 15:41:10,793 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 15:41:10,970 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-13 15:41:10,970 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 15:41:11,003 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 15:41:11,102 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 15:41:11,102 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 15:41:11,274 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_8343 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (_ bv1 1) (select |c_#valid| (let ((.cse0 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (store |c_#memory_$Pointer$#2.base| (select (select |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse0) v_ArrVal_8343) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0)))))) is different from false [2024-11-13 15:41:11,295 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_8342 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8343 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (_ bv1 1) (select |c_#valid| (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (let ((.cse0 (store |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_main_#t~mem40#1.base| v_ArrVal_8342))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_8343)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))))) is different from false [2024-11-13 15:41:11,310 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_8342 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8343 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (_ bv1 1) (select |c_#valid| (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (let ((.cse0 (store |c_#memory_$Pointer$#2.base| (select (select |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_8342))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_8343)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))))) is different from false [2024-11-13 15:41:11,333 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_8342 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8341 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8343 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (_ bv1 1) (select |c_#valid| (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (let ((.cse0 (let ((.cse2 (store |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_main_#t~mem39#1.base| v_ArrVal_8341))) (store .cse2 (select (select .cse2 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_8342)))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_8343)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))))) is different from false [2024-11-13 15:41:11,352 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_8342 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8341 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8343 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (_ bv1 1) (select |c_#valid| (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (let ((.cse0 (let ((.cse2 (store |c_#memory_$Pointer$#2.base| (select (select |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_8341))) (store .cse2 (select (select .cse2 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_8342)))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_8343)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))))) is different from false [2024-11-13 15:41:11,878 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_8342 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8341 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8389 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8343 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (select |c_#valid| (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (let ((.cse0 (let ((.cse2 (let ((.cse3 (store |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_main_#t~mem37#1.base| v_ArrVal_8389))) (store .cse3 (select (select .cse3 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_8341)))) (store .cse2 (select (select .cse2 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_8342)))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_8343)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (_ bv1 1)))) is different from false [2024-11-13 15:41:11,884 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [936692040] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 15:41:11,884 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-13 15:41:11,884 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11] total 21 [2024-11-13 15:41:11,884 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1984701042] [2024-11-13 15:41:11,884 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-13 15:41:11,885 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2024-11-13 15:41:11,885 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-13 15:41:11,885 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2024-11-13 15:41:11,885 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=117, Invalid=458, Unknown=29, NotChecked=728, Total=1332 [2024-11-13 15:41:11,886 INFO L87 Difference]: Start difference. First operand 3185 states and 4163 transitions. Second operand has 22 states, 19 states have (on average 5.7368421052631575) 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 15:41:38,302 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 15:41:38,302 INFO L93 Difference]: Finished difference Result 3186 states and 4165 transitions. [2024-11-13 15:41:38,302 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-13 15:41:38,303 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 19 states have (on average 5.7368421052631575) 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 15:41:38,303 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 15:41:38,307 INFO L225 Difference]: With dead ends: 3186 [2024-11-13 15:41:38,307 INFO L226 Difference]: Without dead ends: 3186 [2024-11-13 15:41:38,307 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 283 GetRequests, 246 SyntacticMatches, 1 SemanticMatches, 36 ConstructedPredicates, 13 IntricatePredicates, 0 DeprecatedPredicates, 120 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=126, Invalid=497, Unknown=29, NotChecked=754, Total=1406 [2024-11-13 15:41:38,307 INFO L432 NwaCegarLoop]: 1167 mSDtfsCounter, 1605 mSDsluCounter, 10978 mSDsCounter, 0 mSdLazyCounter, 9357 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 23.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1620 SdHoareTripleChecker+Valid, 12145 SdHoareTripleChecker+Invalid, 9375 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 9357 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 26.1s IncrementalHoareTripleChecker+Time [2024-11-13 15:41:38,308 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1620 Valid, 12145 Invalid, 9375 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [18 Valid, 9357 Invalid, 0 Unknown, 0 Unchecked, 26.1s Time] [2024-11-13 15:41:38,310 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3186 states. [2024-11-13 15:41:38,329 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3186 to 3184. [2024-11-13 15:41:38,331 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3184 states, 2422 states have (on average 1.694467382328654) internal successors, (4104), 3155 states have internal predecessors, (4104), 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 15:41:38,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3184 states to 3184 states and 4161 transitions. [2024-11-13 15:41:38,334 INFO L78 Accepts]: Start accepts. Automaton has 3184 states and 4161 transitions. Word has length 129 [2024-11-13 15:41:38,335 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 15:41:38,335 INFO L471 AbstractCegarLoop]: Abstraction has 3184 states and 4161 transitions. [2024-11-13 15:41:38,335 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 19 states have (on average 5.7368421052631575) 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 15:41:38,335 INFO L276 IsEmpty]: Start isEmpty. Operand 3184 states and 4161 transitions. [2024-11-13 15:41:38,335 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2024-11-13 15:41:38,335 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 15:41:38,335 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 15:41:38,364 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afbd63cc-39ec-4e64-9612-8b06172106ae/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (47)] Ended with exit code 0 [2024-11-13 15:41:38,593 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afbd63cc-39ec-4e64-9612-8b06172106ae/bin/uautomizer-verify-qhAvR1uOyd/cvc4 --incremental --print-success --lang smt (48)] Forceful destruction successful, exit code 0 [2024-11-13 15:41:38,739 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 47 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afbd63cc-39ec-4e64-9612-8b06172106ae/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,48 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afbd63cc-39ec-4e64-9612-8b06172106ae/bin/uautomizer-verify-qhAvR1uOyd/cvc4 --incremental --print-success --lang smt [2024-11-13 15:41:38,739 INFO L396 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr95REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 1088 more)] === [2024-11-13 15:41:38,740 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:41:38,740 INFO L85 PathProgramCache]: Analyzing trace with hash 1676279228, now seen corresponding path program 1 times [2024-11-13 15:41:38,741 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-13 15:41:38,741 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [669791841] [2024-11-13 15:41:38,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:41:38,741 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:41:38,741 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afbd63cc-39ec-4e64-9612-8b06172106ae/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:41:38,742 INFO L229 MonitoredProcess]: Starting monitored process 49 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afbd63cc-39ec-4e64-9612-8b06172106ae/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 15:41:38,743 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afbd63cc-39ec-4e64-9612-8b06172106ae/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (49)] Waiting until timeout for monitored process [2024-11-13 15:41:39,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:41:39,851 INFO L255 TraceCheckSpWp]: Trace formula consists of 902 conjuncts, 116 conjuncts are in the unsatisfiable core [2024-11-13 15:41:39,872 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:41:40,225 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 15:41:40,257 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2024-11-13 15:41:40,258 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 15:41:40,324 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 15:41:40,341 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 15:41:40,576 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 15:41:40,584 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 15:41:41,708 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-13 15:41:41,709 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 15:41:41,716 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 15:41:41,912 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-13 15:41:41,912 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 15:41:41,930 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 15:41:42,071 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-13 15:41:42,071 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 15:41:42,087 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 15:41:42,222 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-13 15:41:42,222 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 15:41:42,229 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 15:41:42,268 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 31 treesize of output 13 [2024-11-13 15:41:42,277 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 15:41:42,323 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 15:41:42,323 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 15:41:42,702 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (let ((.cse0 (select (select |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (and (forall ((v_ArrVal_8892 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8891 (Array (_ BitVec 32) (_ BitVec 32)))) (bvule (bvadd (_ bv24 32) (select (select (store |c_#memory_$Pointer$#2.offset| .cse0 v_ArrVal_8892) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)) (select |c_#length| (select (select (store |c_#memory_$Pointer$#2.base| .cse0 v_ArrVal_8891) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))) (forall ((v_ArrVal_8892 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse2 (select (select (store |c_#memory_$Pointer$#2.offset| .cse0 v_ArrVal_8892) |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 15:41:42,758 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (and (forall ((v_ArrVal_8892 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8891 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8890 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8889 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse2 (store |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_main_#t~mem40#1.base| v_ArrVal_8889))) (let ((.cse0 (select (select .cse2 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (bvule (bvadd (_ bv24 32) (select (select (store (store |c_#memory_$Pointer$#2.offset| |c_ULTIMATE.start_main_#t~mem40#1.base| v_ArrVal_8890) .cse0 v_ArrVal_8892) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)) (select |c_#length| (select (select (store .cse2 .cse0 v_ArrVal_8891) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))))) (forall ((v_ArrVal_8892 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8890 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8889 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse3 (select (select (store (store |c_#memory_$Pointer$#2.offset| |c_ULTIMATE.start_main_#t~mem40#1.base| v_ArrVal_8890) (select (select (store |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_main_#t~mem40#1.base| v_ArrVal_8889) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_8892) |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 15:41:42,810 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse2 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (let ((.cse1 (select (select |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (and (forall ((v_ArrVal_8892 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8890 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8889 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (select (store (store |c_#memory_$Pointer$#2.offset| .cse1 v_ArrVal_8890) (select (select (store |c_#memory_$Pointer$#2.base| .cse1 v_ArrVal_8889) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2) v_ArrVal_8892) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (bvule (bvadd .cse0 (_ bv20 32)) (bvadd .cse0 (_ bv24 32))))) (forall ((v_ArrVal_8892 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8891 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8890 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8889 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse4 (store |c_#memory_$Pointer$#2.base| .cse1 v_ArrVal_8889))) (let ((.cse3 (select (select .cse4 |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (bvule (bvadd (select (select (store (store |c_#memory_$Pointer$#2.offset| .cse1 v_ArrVal_8890) .cse3 v_ArrVal_8892) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2) (_ bv24 32)) (select |c_#length| (select (select (store .cse4 .cse3 v_ArrVal_8891) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))))))))) is different from false [2024-11-13 15:41:42,911 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse3 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (and (forall ((v_ArrVal_8892 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8890 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8889 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8888 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8887 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (select (let ((.cse2 (store |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_main_#t~mem39#1.base| v_ArrVal_8887))) (let ((.cse1 (select (select .cse2 |c_ULTIMATE.start_main_~user~0#1.base|) .cse3))) (store (store (store |c_#memory_$Pointer$#2.offset| |c_ULTIMATE.start_main_#t~mem39#1.base| v_ArrVal_8888) .cse1 v_ArrVal_8890) (select (select (store .cse2 .cse1 v_ArrVal_8889) |c_ULTIMATE.start_main_~user~0#1.base|) .cse3) v_ArrVal_8892))) |c_ULTIMATE.start_main_~user~0#1.base|) .cse3))) (bvule (bvadd (_ bv20 32) .cse0) (bvadd (_ bv24 32) .cse0)))) (forall ((v_ArrVal_8892 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8891 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8890 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8889 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8888 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8887 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse7 (store |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_main_#t~mem39#1.base| v_ArrVal_8887))) (let ((.cse4 (select (select .cse7 |c_ULTIMATE.start_main_~user~0#1.base|) .cse3))) (let ((.cse6 (store .cse7 .cse4 v_ArrVal_8889))) (let ((.cse5 (select (select .cse6 |c_ULTIMATE.start_main_~user~0#1.base|) .cse3))) (bvule (bvadd (_ bv24 32) (select (select (store (store (store |c_#memory_$Pointer$#2.offset| |c_ULTIMATE.start_main_#t~mem39#1.base| v_ArrVal_8888) .cse4 v_ArrVal_8890) .cse5 v_ArrVal_8892) |c_ULTIMATE.start_main_~user~0#1.base|) .cse3)) (select |c_#length| (select (select (store .cse6 .cse5 v_ArrVal_8891) |c_ULTIMATE.start_main_~user~0#1.base|) .cse3)))))))))) is different from false [2024-11-13 15:41:42,972 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse4 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (let ((.cse1 (select (select |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse4))) (and (forall ((v_ArrVal_8892 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8890 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8889 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8888 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8887 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (select (let ((.cse3 (store |c_#memory_$Pointer$#2.base| .cse1 v_ArrVal_8887))) (let ((.cse2 (select (select .cse3 |c_ULTIMATE.start_main_~user~0#1.base|) .cse4))) (store (store (store |c_#memory_$Pointer$#2.offset| .cse1 v_ArrVal_8888) .cse2 v_ArrVal_8890) (select (select (store .cse3 .cse2 v_ArrVal_8889) |c_ULTIMATE.start_main_~user~0#1.base|) .cse4) v_ArrVal_8892))) |c_ULTIMATE.start_main_~user~0#1.base|) .cse4))) (bvule (bvadd (_ bv20 32) .cse0) (bvadd (_ bv24 32) .cse0)))) (forall ((v_ArrVal_8892 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8891 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8890 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8889 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8888 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8887 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse8 (store |c_#memory_$Pointer$#2.base| .cse1 v_ArrVal_8887))) (let ((.cse5 (select (select .cse8 |c_ULTIMATE.start_main_~user~0#1.base|) .cse4))) (let ((.cse7 (store .cse8 .cse5 v_ArrVal_8889))) (let ((.cse6 (select (select .cse7 |c_ULTIMATE.start_main_~user~0#1.base|) .cse4))) (bvule (bvadd (_ bv24 32) (select (select (store (store (store |c_#memory_$Pointer$#2.offset| .cse1 v_ArrVal_8888) .cse5 v_ArrVal_8890) .cse6 v_ArrVal_8892) |c_ULTIMATE.start_main_~user~0#1.base|) .cse4)) (select |c_#length| (select (select (store .cse7 .cse6 v_ArrVal_8891) |c_ULTIMATE.start_main_~user~0#1.base|) .cse4))))))))))) is different from false [2024-11-13 15:41:44,762 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse3 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (and (forall ((v_ArrVal_8892 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8891 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8890 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8889 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8888 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8887 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8984 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8983 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse6 (store |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_main_#t~mem37#1.base| v_ArrVal_8983))) (let ((.cse0 (select (select .cse6 |c_ULTIMATE.start_main_~user~0#1.base|) .cse3))) (let ((.cse5 (store .cse6 .cse0 v_ArrVal_8887))) (let ((.cse1 (select (select .cse5 |c_ULTIMATE.start_main_~user~0#1.base|) .cse3))) (let ((.cse4 (store .cse5 .cse1 v_ArrVal_8889))) (let ((.cse2 (select (select .cse4 |c_ULTIMATE.start_main_~user~0#1.base|) .cse3))) (bvule (bvadd (_ bv24 32) (select (select (store (store (store (store |c_#memory_$Pointer$#2.offset| |c_ULTIMATE.start_main_#t~mem37#1.base| v_ArrVal_8984) .cse0 v_ArrVal_8888) .cse1 v_ArrVal_8890) .cse2 v_ArrVal_8892) |c_ULTIMATE.start_main_~user~0#1.base|) .cse3)) (select |c_#length| (select (select (store .cse4 .cse2 v_ArrVal_8891) |c_ULTIMATE.start_main_~user~0#1.base|) .cse3)))))))))) (forall ((v_ArrVal_8892 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8890 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8889 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8888 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8887 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8984 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8983 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse7 (select (select (let ((.cse11 (store |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_main_#t~mem37#1.base| v_ArrVal_8983))) (let ((.cse8 (select (select .cse11 |c_ULTIMATE.start_main_~user~0#1.base|) .cse3))) (let ((.cse10 (store .cse11 .cse8 v_ArrVal_8887))) (let ((.cse9 (select (select .cse10 |c_ULTIMATE.start_main_~user~0#1.base|) .cse3))) (store (store (store (store |c_#memory_$Pointer$#2.offset| |c_ULTIMATE.start_main_#t~mem37#1.base| v_ArrVal_8984) .cse8 v_ArrVal_8888) .cse9 v_ArrVal_8890) (select (select (store .cse10 .cse9 v_ArrVal_8889) |c_ULTIMATE.start_main_~user~0#1.base|) .cse3) v_ArrVal_8892))))) |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 15:41:44,781 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-13 15:41:44,781 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [669791841] [2024-11-13 15:41:44,782 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [669791841] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 15:41:44,782 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1026152878] [2024-11-13 15:41:44,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:41:44,782 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-13 15:41:44,782 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afbd63cc-39ec-4e64-9612-8b06172106ae/bin/uautomizer-verify-qhAvR1uOyd/cvc4 [2024-11-13 15:41:44,786 INFO L229 MonitoredProcess]: Starting monitored process 50 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afbd63cc-39ec-4e64-9612-8b06172106ae/bin/uautomizer-verify-qhAvR1uOyd/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-13 15:41:44,787 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afbd63cc-39ec-4e64-9612-8b06172106ae/bin/uautomizer-verify-qhAvR1uOyd/cvc4 --incremental --print-success --lang smt (50)] Waiting until timeout for monitored process