./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test8-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version d790fecc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27005571-b26c-4ebb-85fe-687e4983ef0a/bin/uautomizer-verify-aQ6SnzHsRB/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27005571-b26c-4ebb-85fe-687e4983ef0a/bin/uautomizer-verify-aQ6SnzHsRB/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27005571-b26c-4ebb-85fe-687e4983ef0a/bin/uautomizer-verify-aQ6SnzHsRB/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27005571-b26c-4ebb-85fe-687e4983ef0a/bin/uautomizer-verify-aQ6SnzHsRB/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test8-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27005571-b26c-4ebb-85fe-687e4983ef0a/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27005571-b26c-4ebb-85fe-687e4983ef0a/bin/uautomizer-verify-aQ6SnzHsRB --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 3011b5baaaedb6c621e2913d841379eae3b8a9da7212e43b784fc8c1004eda96 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-11-28 04:30:44,150 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-28 04:30:44,221 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27005571-b26c-4ebb-85fe-687e4983ef0a/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2024-11-28 04:30:44,227 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-28 04:30:44,227 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-28 04:30:44,257 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-28 04:30:44,258 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-28 04:30:44,258 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-28 04:30:44,258 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-28 04:30:44,259 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-28 04:30:44,259 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-28 04:30:44,259 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-28 04:30:44,259 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-28 04:30:44,259 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-28 04:30:44,259 INFO L153 SettingsManager]: * Use SBE=true [2024-11-28 04:30:44,260 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-28 04:30:44,260 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-28 04:30:44,260 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-28 04:30:44,260 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-28 04:30:44,260 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-28 04:30:44,260 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-11-28 04:30:44,261 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-11-28 04:30:44,261 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-11-28 04:30:44,261 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-28 04:30:44,261 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-28 04:30:44,261 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-28 04:30:44,261 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-28 04:30:44,261 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-28 04:30:44,261 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-28 04:30:44,262 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-28 04:30:44,262 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 04:30:44,262 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 04:30:44,262 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 04:30:44,262 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 04:30:44,262 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-28 04:30:44,262 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 04:30:44,263 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 04:30:44,263 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 04:30:44,263 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 04:30:44,263 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-28 04:30:44,263 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-28 04:30:44,263 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-28 04:30:44,263 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-28 04:30:44,264 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-28 04:30:44,264 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-28 04:30:44,264 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-28 04:30:44,264 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-28 04:30:44,264 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_27005571-b26c-4ebb-85fe-687e4983ef0a/bin/uautomizer-verify-aQ6SnzHsRB 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 -> 3011b5baaaedb6c621e2913d841379eae3b8a9da7212e43b784fc8c1004eda96 [2024-11-28 04:30:44,598 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-28 04:30:44,616 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-28 04:30:44,619 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-28 04:30:44,620 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-28 04:30:44,622 INFO L274 PluginConnector]: CDTParser initialized [2024-11-28 04:30:44,624 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27005571-b26c-4ebb-85fe-687e4983ef0a/bin/uautomizer-verify-aQ6SnzHsRB/../../sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test8-2.i [2024-11-28 04:30:48,439 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27005571-b26c-4ebb-85fe-687e4983ef0a/bin/uautomizer-verify-aQ6SnzHsRB/data/72324f469/d97ac92fa621459cb18fb552dae1855e/FLAG018acc892 [2024-11-28 04:30:48,969 INFO L384 CDTParser]: Found 1 translation units. [2024-11-28 04:30:48,972 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27005571-b26c-4ebb-85fe-687e4983ef0a/sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test8-2.i [2024-11-28 04:30:49,003 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27005571-b26c-4ebb-85fe-687e4983ef0a/bin/uautomizer-verify-aQ6SnzHsRB/data/72324f469/d97ac92fa621459cb18fb552dae1855e/FLAG018acc892 [2024-11-28 04:30:49,511 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27005571-b26c-4ebb-85fe-687e4983ef0a/bin/uautomizer-verify-aQ6SnzHsRB/data/72324f469/d97ac92fa621459cb18fb552dae1855e [2024-11-28 04:30:49,514 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-28 04:30:49,516 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-28 04:30:49,518 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-28 04:30:49,518 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-28 04:30:49,524 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-28 04:30:49,525 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 04:30:49" (1/1) ... [2024-11-28 04:30:49,527 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3d069cc2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:30:49, skipping insertion in model container [2024-11-28 04:30:49,527 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 04:30:49" (1/1) ... [2024-11-28 04:30:49,583 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-28 04:30:50,103 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-28 04:30:50,166 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-28 04:30:50,171 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-28 04:30:50,176 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-28 04:30:50,185 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-28 04:30:50,237 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-28 04:30:50,237 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-28 04:30:50,243 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-28 04:30:50,243 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-28 04:30:50,250 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-28 04:30:50,252 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-28 04:30:50,254 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-28 04:30:50,255 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-28 04:30:50,266 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-28 04:30:50,270 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-28 04:30:50,271 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-28 04:30:50,272 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-28 04:30:50,273 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-28 04:30:50,279 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-28 04:30:50,287 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 04:30:50,314 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) [2024-11-28 04:30:50,318 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@71b687ed and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:30:50, skipping insertion in model container [2024-11-28 04:30:50,318 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-28 04:30:50,319 INFO L186 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2024-11-28 04:30:50,321 INFO L158 Benchmark]: Toolchain (without parser) took 803.88ms. Allocated memory is still 117.4MB. Free memory was 90.6MB in the beginning and 69.9MB in the end (delta: 20.6MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. [2024-11-28 04:30:50,325 INFO L158 Benchmark]: CDTParser took 1.81ms. Allocated memory is still 117.4MB. Free memory is still 74.5MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-28 04:30:50,326 INFO L158 Benchmark]: CACSL2BoogieTranslator took 800.57ms. Allocated memory is still 117.4MB. Free memory was 90.6MB in the beginning and 69.9MB in the end (delta: 20.6MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. [2024-11-28 04:30:50,327 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 1.81ms. Allocated memory is still 117.4MB. Free memory is still 74.5MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 800.57ms. Allocated memory is still 117.4MB. Free memory was 90.6MB in the beginning and 69.9MB in the end (delta: 20.6MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 778]: 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_27005571-b26c-4ebb-85fe-687e4983ef0a/bin/uautomizer-verify-aQ6SnzHsRB/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27005571-b26c-4ebb-85fe-687e4983ef0a/bin/uautomizer-verify-aQ6SnzHsRB/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27005571-b26c-4ebb-85fe-687e4983ef0a/bin/uautomizer-verify-aQ6SnzHsRB/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27005571-b26c-4ebb-85fe-687e4983ef0a/bin/uautomizer-verify-aQ6SnzHsRB/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test8-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27005571-b26c-4ebb-85fe-687e4983ef0a/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27005571-b26c-4ebb-85fe-687e4983ef0a/bin/uautomizer-verify-aQ6SnzHsRB --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 3011b5baaaedb6c621e2913d841379eae3b8a9da7212e43b784fc8c1004eda96 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-11-28 04:30:53,495 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-28 04:30:53,643 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27005571-b26c-4ebb-85fe-687e4983ef0a/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2024-11-28 04:30:53,656 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-28 04:30:53,657 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-28 04:30:53,714 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-28 04:30:53,715 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-28 04:30:53,715 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-28 04:30:53,717 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-28 04:30:53,717 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-28 04:30:53,718 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-28 04:30:53,718 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-28 04:30:53,718 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-28 04:30:53,719 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-28 04:30:53,719 INFO L153 SettingsManager]: * Use SBE=true [2024-11-28 04:30:53,720 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-28 04:30:53,721 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-28 04:30:53,722 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-28 04:30:53,722 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-28 04:30:53,722 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-28 04:30:53,722 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-11-28 04:30:53,722 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-11-28 04:30:53,722 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-11-28 04:30:53,722 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-28 04:30:53,722 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-28 04:30:53,722 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2024-11-28 04:30:53,722 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2024-11-28 04:30:53,723 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-28 04:30:53,723 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-28 04:30:53,723 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-28 04:30:53,723 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-28 04:30:53,723 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-28 04:30:53,723 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 04:30:53,723 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 04:30:53,723 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 04:30:53,723 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 04:30:53,724 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-28 04:30:53,724 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 04:30:53,724 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 04:30:53,724 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 04:30:53,724 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 04:30:53,724 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-28 04:30:53,726 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-28 04:30:53,726 INFO L153 SettingsManager]: * Trace refinement strategy=FOX [2024-11-28 04:30:53,726 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2024-11-28 04:30:53,726 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-28 04:30:53,727 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-28 04:30:53,727 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-28 04:30:53,727 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-28 04:30:53,727 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_27005571-b26c-4ebb-85fe-687e4983ef0a/bin/uautomizer-verify-aQ6SnzHsRB 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 -> 3011b5baaaedb6c621e2913d841379eae3b8a9da7212e43b784fc8c1004eda96 [2024-11-28 04:30:54,134 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-28 04:30:54,151 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-28 04:30:54,155 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-28 04:30:54,158 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-28 04:30:54,159 INFO L274 PluginConnector]: CDTParser initialized [2024-11-28 04:30:54,161 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27005571-b26c-4ebb-85fe-687e4983ef0a/bin/uautomizer-verify-aQ6SnzHsRB/../../sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test8-2.i [2024-11-28 04:30:57,683 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27005571-b26c-4ebb-85fe-687e4983ef0a/bin/uautomizer-verify-aQ6SnzHsRB/data/e9dfabbc7/8012b8fe50114fbdb83ee66d6aec3223/FLAG822e69f17 [2024-11-28 04:30:58,155 INFO L384 CDTParser]: Found 1 translation units. [2024-11-28 04:30:58,155 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27005571-b26c-4ebb-85fe-687e4983ef0a/sv-benchmarks/c/uthash-2.0.2/uthash_OAT_test8-2.i [2024-11-28 04:30:58,182 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27005571-b26c-4ebb-85fe-687e4983ef0a/bin/uautomizer-verify-aQ6SnzHsRB/data/e9dfabbc7/8012b8fe50114fbdb83ee66d6aec3223/FLAG822e69f17 [2024-11-28 04:30:58,208 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27005571-b26c-4ebb-85fe-687e4983ef0a/bin/uautomizer-verify-aQ6SnzHsRB/data/e9dfabbc7/8012b8fe50114fbdb83ee66d6aec3223 [2024-11-28 04:30:58,214 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-28 04:30:58,217 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-28 04:30:58,219 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-28 04:30:58,219 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-28 04:30:58,225 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-28 04:30:58,226 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 04:30:58" (1/1) ... [2024-11-28 04:30:58,227 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2f04920d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:30:58, skipping insertion in model container [2024-11-28 04:30:58,227 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 04:30:58" (1/1) ... [2024-11-28 04:30:58,293 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-28 04:30:58,791 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-28 04:30:58,842 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-28 04:30:58,849 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-28 04:30:58,856 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-28 04:30:58,867 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-28 04:30:58,919 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-28 04:30:58,919 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-28 04:30:58,923 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-28 04:30:58,924 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-28 04:30:58,928 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-28 04:30:58,930 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-28 04:30:58,931 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-28 04:30:58,933 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-28 04:30:58,940 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-28 04:30:58,944 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-28 04:30:58,945 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-28 04:30:58,947 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-28 04:30:58,948 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-28 04:30:58,953 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-28 04:30:58,959 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 04:30:58,985 INFO L197 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2024-11-28 04:30:59,009 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-28 04:30:59,063 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-28 04:30:59,105 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-28 04:30:59,108 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-28 04:30:59,111 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-28 04:30:59,117 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-28 04:30:59,144 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-28 04:30:59,144 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-28 04:30:59,147 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-28 04:30:59,147 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-28 04:30:59,151 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-28 04:30:59,152 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-28 04:30:59,152 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-28 04:30:59,153 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-28 04:30:59,160 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-28 04:30:59,166 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-28 04:30:59,170 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-28 04:30:59,172 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-28 04:30:59,173 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-28 04:30:59,185 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-28 04:30:59,190 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 04:30:59,200 INFO L200 MainTranslator]: Completed pre-run [2024-11-28 04:30:59,344 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 04:30:59,393 INFO L204 MainTranslator]: Completed translation [2024-11-28 04:30:59,394 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:30:59 WrapperNode [2024-11-28 04:30:59,394 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-28 04:30:59,395 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-28 04:30:59,395 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-28 04:30:59,395 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-28 04:30:59,403 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:30:59" (1/1) ... [2024-11-28 04:30:59,448 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:30:59" (1/1) ... [2024-11-28 04:30:59,515 INFO L138 Inliner]: procedures = 180, calls = 342, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 1165 [2024-11-28 04:30:59,516 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-28 04:30:59,516 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-28 04:30:59,516 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-28 04:30:59,517 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-28 04:30:59,536 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:30:59" (1/1) ... [2024-11-28 04:30:59,537 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:30:59" (1/1) ... [2024-11-28 04:30:59,562 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:30:59" (1/1) ... [2024-11-28 04:30:59,696 INFO L175 MemorySlicer]: Split 304 memory accesses to 3 slices as follows [2, 268, 34]. 88 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0]. The 62 writes are split as follows [0, 58, 4]. [2024-11-28 04:30:59,700 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:30:59" (1/1) ... [2024-11-28 04:30:59,701 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:30:59" (1/1) ... [2024-11-28 04:30:59,778 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:30:59" (1/1) ... [2024-11-28 04:30:59,785 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:30:59" (1/1) ... [2024-11-28 04:30:59,810 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:30:59" (1/1) ... [2024-11-28 04:30:59,819 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:30:59" (1/1) ... [2024-11-28 04:30:59,827 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:30:59" (1/1) ... [2024-11-28 04:30:59,841 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-28 04:30:59,846 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-28 04:30:59,846 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-28 04:30:59,846 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-28 04:30:59,848 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:30:59" (1/1) ... [2024-11-28 04:30:59,855 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 04:30:59,870 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27005571-b26c-4ebb-85fe-687e4983ef0a/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:30:59,883 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27005571-b26c-4ebb-85fe-687e4983ef0a/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-28 04:30:59,888 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27005571-b26c-4ebb-85fe-687e4983ef0a/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-28 04:30:59,925 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2024-11-28 04:30:59,925 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2024-11-28 04:30:59,925 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#0 [2024-11-28 04:30:59,926 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#1 [2024-11-28 04:30:59,926 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#2 [2024-11-28 04:30:59,926 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#0 [2024-11-28 04:30:59,926 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#1 [2024-11-28 04:30:59,926 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#2 [2024-11-28 04:30:59,926 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-11-28 04:30:59,926 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-11-28 04:30:59,927 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#0 [2024-11-28 04:30:59,927 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#1 [2024-11-28 04:30:59,927 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#2 [2024-11-28 04:30:59,927 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#0 [2024-11-28 04:30:59,927 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#1 [2024-11-28 04:30:59,927 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#2 [2024-11-28 04:30:59,927 INFO L130 BoogieDeclarations]: Found specification of procedure test_int [2024-11-28 04:30:59,927 INFO L138 BoogieDeclarations]: Found implementation of procedure test_int [2024-11-28 04:30:59,927 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-28 04:30:59,927 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-28 04:30:59,927 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2024-11-28 04:30:59,927 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2024-11-28 04:30:59,927 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2024-11-28 04:30:59,928 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-28 04:30:59,928 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2024-11-28 04:30:59,928 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2024-11-28 04:30:59,928 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2024-11-28 04:30:59,928 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-28 04:30:59,928 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#0 [2024-11-28 04:30:59,928 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#1 [2024-11-28 04:30:59,928 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#2 [2024-11-28 04:30:59,928 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2024-11-28 04:30:59,928 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#1 [2024-11-28 04:30:59,928 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#2 [2024-11-28 04:30:59,928 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-28 04:30:59,928 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-28 04:31:00,244 INFO L234 CfgBuilder]: Building ICFG [2024-11-28 04:31:00,246 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-28 04:31:00,273 WARN L773 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2024-11-28 04:31:00,324 WARN L773 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2024-11-28 04:31:00,359 WARN L773 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2024-11-28 04:31:06,704 INFO L? ?]: Removed 1321 outVars from TransFormulas that were not future-live. [2024-11-28 04:31:06,705 INFO L283 CfgBuilder]: Performing block encoding [2024-11-28 04:31:06,755 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-28 04:31:06,755 INFO L312 CfgBuilder]: Removed 40 assume(true) statements. [2024-11-28 04:31:06,756 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 04:31:06 BoogieIcfgContainer [2024-11-28 04:31:06,756 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-28 04:31:06,759 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-28 04:31:06,759 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-28 04:31:06,765 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-28 04:31:06,765 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 04:30:58" (1/3) ... [2024-11-28 04:31:06,766 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@ebb3777 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 04:31:06, skipping insertion in model container [2024-11-28 04:31:06,766 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:30:59" (2/3) ... [2024-11-28 04:31:06,767 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@ebb3777 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 04:31:06, skipping insertion in model container [2024-11-28 04:31:06,767 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 04:31:06" (3/3) ... [2024-11-28 04:31:06,770 INFO L128 eAbstractionObserver]: Analyzing ICFG uthash_OAT_test8-2.i [2024-11-28 04:31:06,788 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-28 04:31:06,790 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG uthash_OAT_test8-2.i that has 7 procedures, 1310 locations, 1 initial locations, 42 loop locations, and 634 error locations. [2024-11-28 04:31:06,882 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-28 04:31:06,900 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;@571e05b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-28 04:31:06,900 INFO L334 AbstractCegarLoop]: Starting to check reachability of 634 error locations. [2024-11-28 04:31:06,913 INFO L276 IsEmpty]: Start isEmpty. Operand has 1300 states, 642 states have (on average 2.2274143302180685) internal successors, (1430), 1290 states have internal predecessors, (1430), 22 states have call successors, (22), 4 states have call predecessors, (22), 4 states have return successors, (22), 8 states have call predecessors, (22), 22 states have call successors, (22) [2024-11-28 04:31:06,920 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2024-11-28 04:31:06,920 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:31:06,921 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1] [2024-11-28 04:31:06,923 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 631 more)] === [2024-11-28 04:31:06,929 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:31:06,931 INFO L85 PathProgramCache]: Analyzing trace with hash 158947, now seen corresponding path program 1 times [2024-11-28 04:31:06,944 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 04:31:06,944 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [67376348] [2024-11-28 04:31:06,945 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:31:06,945 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:31:06,946 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27005571-b26c-4ebb-85fe-687e4983ef0a/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:31:06,948 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27005571-b26c-4ebb-85fe-687e4983ef0a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:31:06,977 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27005571-b26c-4ebb-85fe-687e4983ef0a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-28 04:31:07,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:31:07,219 INFO L256 TraceCheckSpWp]: Trace formula consists of 24 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-28 04:31:07,230 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:31:07,274 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 [2024-11-28 04:31:07,313 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:31:07,314 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 04:31:07,315 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 04:31:07,315 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [67376348] [2024-11-28 04:31:07,316 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [67376348] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:31:07,316 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:31:07,316 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-28 04:31:07,318 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [615810283] [2024-11-28 04:31:07,321 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:31:07,326 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 04:31:07,327 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 04:31:07,360 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 04:31:07,361 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 04:31:07,367 INFO L87 Difference]: Start difference. First operand has 1300 states, 642 states have (on average 2.2274143302180685) internal successors, (1430), 1290 states have internal predecessors, (1430), 22 states have call successors, (22), 4 states have call predecessors, (22), 4 states have return successors, (22), 8 states have call predecessors, (22), 22 states have call successors, (22) 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) [2024-11-28 04:31:10,439 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:31:10,440 INFO L93 Difference]: Finished difference Result 1482 states and 1589 transitions. [2024-11-28 04:31:10,441 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 04:31:10,443 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 [2024-11-28 04:31:10,443 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:31:10,465 INFO L225 Difference]: With dead ends: 1482 [2024-11-28 04:31:10,465 INFO L226 Difference]: Without dead ends: 1480 [2024-11-28 04:31:10,467 INFO L434 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 [2024-11-28 04:31:10,471 INFO L435 NwaCegarLoop]: 823 mSDtfsCounter, 1154 mSDsluCounter, 238 mSDsCounter, 0 mSdLazyCounter, 750 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1158 SdHoareTripleChecker+Valid, 1061 SdHoareTripleChecker+Invalid, 766 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 750 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2024-11-28 04:31:10,472 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1158 Valid, 1061 Invalid, 766 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 750 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2024-11-28 04:31:10,494 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1480 states. [2024-11-28 04:31:10,608 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1480 to 1289. [2024-11-28 04:31:10,611 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1289 states, 647 states have (on average 2.081916537867079) internal successors, (1347), 1278 states have internal predecessors, (1347), 23 states have call successors, (23), 4 states have call predecessors, (23), 3 states have return successors, (21), 7 states have call predecessors, (21), 21 states have call successors, (21) [2024-11-28 04:31:10,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1289 states to 1289 states and 1391 transitions. [2024-11-28 04:31:10,629 INFO L78 Accepts]: Start accepts. Automaton has 1289 states and 1391 transitions. Word has length 3 [2024-11-28 04:31:10,629 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:31:10,630 INFO L471 AbstractCegarLoop]: Abstraction has 1289 states and 1391 transitions. [2024-11-28 04:31:10,631 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) [2024-11-28 04:31:10,631 INFO L276 IsEmpty]: Start isEmpty. Operand 1289 states and 1391 transitions. [2024-11-28 04:31:10,631 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2024-11-28 04:31:10,631 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:31:10,632 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1] [2024-11-28 04:31:10,647 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27005571-b26c-4ebb-85fe-687e4983ef0a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-28 04:31:10,837 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27005571-b26c-4ebb-85fe-687e4983ef0a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:31:10,837 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 631 more)] === [2024-11-28 04:31:10,838 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:31:10,838 INFO L85 PathProgramCache]: Analyzing trace with hash 158948, now seen corresponding path program 1 times [2024-11-28 04:31:10,838 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 04:31:10,838 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2099293322] [2024-11-28 04:31:10,839 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:31:10,839 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:31:10,839 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27005571-b26c-4ebb-85fe-687e4983ef0a/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:31:10,843 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27005571-b26c-4ebb-85fe-687e4983ef0a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:31:10,846 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27005571-b26c-4ebb-85fe-687e4983ef0a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-28 04:31:11,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:31:11,009 INFO L256 TraceCheckSpWp]: Trace formula consists of 24 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-28 04:31:11,011 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:31:11,024 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 [2024-11-28 04:31:11,050 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:31:11,050 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 04:31:11,050 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 04:31:11,050 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2099293322] [2024-11-28 04:31:11,050 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2099293322] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:31:11,050 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:31:11,050 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-28 04:31:11,050 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [52596308] [2024-11-28 04:31:11,051 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:31:11,052 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 04:31:11,052 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 04:31:11,054 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 04:31:11,055 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 04:31:11,055 INFO L87 Difference]: Start difference. First operand 1289 states and 1391 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) [2024-11-28 04:31:15,586 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:31:15,586 INFO L93 Difference]: Finished difference Result 1891 states and 2036 transitions. [2024-11-28 04:31:15,587 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 04:31:15,587 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 [2024-11-28 04:31:15,587 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:31:15,595 INFO L225 Difference]: With dead ends: 1891 [2024-11-28 04:31:15,595 INFO L226 Difference]: Without dead ends: 1891 [2024-11-28 04:31:15,596 INFO L434 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 [2024-11-28 04:31:15,597 INFO L435 NwaCegarLoop]: 1086 mSDtfsCounter, 641 mSDsluCounter, 756 mSDsCounter, 0 mSdLazyCounter, 900 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 642 SdHoareTripleChecker+Valid, 1842 SdHoareTripleChecker+Invalid, 906 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 900 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.4s IncrementalHoareTripleChecker+Time [2024-11-28 04:31:15,597 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [642 Valid, 1842 Invalid, 906 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 900 Invalid, 0 Unknown, 0 Unchecked, 4.4s Time] [2024-11-28 04:31:15,601 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1891 states. [2024-11-28 04:31:15,661 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1891 to 1501. [2024-11-28 04:31:15,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1501 states, 859 states have (on average 2.067520372526193) internal successors, (1776), 1489 states have internal predecessors, (1776), 24 states have call successors, (24), 4 states have call predecessors, (24), 3 states have return successors, (22), 8 states have call predecessors, (22), 22 states have call successors, (22) [2024-11-28 04:31:15,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1501 states to 1501 states and 1822 transitions. [2024-11-28 04:31:15,675 INFO L78 Accepts]: Start accepts. Automaton has 1501 states and 1822 transitions. Word has length 3 [2024-11-28 04:31:15,675 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:31:15,676 INFO L471 AbstractCegarLoop]: Abstraction has 1501 states and 1822 transitions. [2024-11-28 04:31:15,676 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) [2024-11-28 04:31:15,676 INFO L276 IsEmpty]: Start isEmpty. Operand 1501 states and 1822 transitions. [2024-11-28 04:31:15,676 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2024-11-28 04:31:15,676 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:31:15,677 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:31:15,688 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27005571-b26c-4ebb-85fe-687e4983ef0a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-28 04:31:15,877 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27005571-b26c-4ebb-85fe-687e4983ef0a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:31:15,877 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 631 more)] === [2024-11-28 04:31:15,878 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:31:15,878 INFO L85 PathProgramCache]: Analyzing trace with hash -2043492463, now seen corresponding path program 1 times [2024-11-28 04:31:15,879 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 04:31:15,879 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [637377484] [2024-11-28 04:31:15,879 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:31:15,879 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:31:15,880 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27005571-b26c-4ebb-85fe-687e4983ef0a/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:31:15,882 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27005571-b26c-4ebb-85fe-687e4983ef0a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:31:15,885 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27005571-b26c-4ebb-85fe-687e4983ef0a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-28 04:31:16,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:31:16,060 INFO L256 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-28 04:31:16,063 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:31:16,072 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 [2024-11-28 04:31:16,161 INFO L349 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2024-11-28 04:31:16,162 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 [2024-11-28 04:31:16,291 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:31:16,292 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 04:31:16,292 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 04:31:16,292 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [637377484] [2024-11-28 04:31:16,292 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [637377484] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:31:16,292 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:31:16,292 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 04:31:16,292 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [260749123] [2024-11-28 04:31:16,292 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:31:16,292 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 04:31:16,293 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 04:31:16,293 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 04:31:16,296 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 04:31:16,296 INFO L87 Difference]: Start difference. First operand 1501 states and 1822 transitions. Second operand has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:31:24,555 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:31:24,555 INFO L93 Difference]: Finished difference Result 2787 states and 2992 transitions. [2024-11-28 04:31:24,556 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 04:31:24,556 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2024-11-28 04:31:24,556 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:31:24,567 INFO L225 Difference]: With dead ends: 2787 [2024-11-28 04:31:24,567 INFO L226 Difference]: Without dead ends: 2787 [2024-11-28 04:31:24,568 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 04:31:24,573 INFO L435 NwaCegarLoop]: 1306 mSDtfsCounter, 1583 mSDsluCounter, 1507 mSDsCounter, 0 mSdLazyCounter, 1956 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1586 SdHoareTripleChecker+Valid, 2813 SdHoareTripleChecker+Invalid, 1967 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 1956 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.1s IncrementalHoareTripleChecker+Time [2024-11-28 04:31:24,573 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1586 Valid, 2813 Invalid, 1967 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 1956 Invalid, 0 Unknown, 0 Unchecked, 8.1s Time] [2024-11-28 04:31:24,578 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2787 states. [2024-11-28 04:31:24,620 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2787 to 1654. [2024-11-28 04:31:24,623 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1654 states, 1011 states have (on average 2.0474777448071215) internal successors, (2070), 1641 states have internal predecessors, (2070), 25 states have call successors, (25), 4 states have call predecessors, (25), 3 states have return successors, (23), 9 states have call predecessors, (23), 23 states have call successors, (23) [2024-11-28 04:31:24,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1654 states to 1654 states and 2118 transitions. [2024-11-28 04:31:24,632 INFO L78 Accepts]: Start accepts. Automaton has 1654 states and 2118 transitions. Word has length 8 [2024-11-28 04:31:24,633 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:31:24,633 INFO L471 AbstractCegarLoop]: Abstraction has 1654 states and 2118 transitions. [2024-11-28 04:31:24,633 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:31:24,633 INFO L276 IsEmpty]: Start isEmpty. Operand 1654 states and 2118 transitions. [2024-11-28 04:31:24,634 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2024-11-28 04:31:24,634 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:31:24,634 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:31:24,645 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27005571-b26c-4ebb-85fe-687e4983ef0a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-11-28 04:31:24,838 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27005571-b26c-4ebb-85fe-687e4983ef0a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:31:24,839 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 631 more)] === [2024-11-28 04:31:24,839 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:31:24,839 INFO L85 PathProgramCache]: Analyzing trace with hash 1076243185, now seen corresponding path program 1 times [2024-11-28 04:31:24,840 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 04:31:24,840 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [954237508] [2024-11-28 04:31:24,840 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:31:24,841 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:31:24,841 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27005571-b26c-4ebb-85fe-687e4983ef0a/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:31:24,847 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27005571-b26c-4ebb-85fe-687e4983ef0a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:31:24,850 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27005571-b26c-4ebb-85fe-687e4983ef0a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-28 04:31:25,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:31:25,025 INFO L256 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-28 04:31:25,027 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:31:25,045 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 [2024-11-28 04:31:25,086 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:31:25,087 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 04:31:25,088 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 04:31:25,088 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [954237508] [2024-11-28 04:31:25,088 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [954237508] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:31:25,089 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:31:25,089 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-28 04:31:25,089 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1754418060] [2024-11-28 04:31:25,089 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:31:25,090 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 04:31:25,090 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 04:31:25,091 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 04:31:25,092 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 04:31:25,092 INFO L87 Difference]: Start difference. First operand 1654 states and 2118 transitions. Second operand has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:31:29,347 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:31:29,347 INFO L93 Difference]: Finished difference Result 2360 states and 3071 transitions. [2024-11-28 04:31:29,347 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 04:31:29,348 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2024-11-28 04:31:29,348 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:31:29,356 INFO L225 Difference]: With dead ends: 2360 [2024-11-28 04:31:29,356 INFO L226 Difference]: Without dead ends: 2360 [2024-11-28 04:31:29,356 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 04:31:29,358 INFO L435 NwaCegarLoop]: 1465 mSDtfsCounter, 713 mSDsluCounter, 597 mSDsCounter, 0 mSdLazyCounter, 921 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 715 SdHoareTripleChecker+Valid, 2062 SdHoareTripleChecker+Invalid, 936 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 921 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.2s IncrementalHoareTripleChecker+Time [2024-11-28 04:31:29,359 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [715 Valid, 2062 Invalid, 936 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 921 Invalid, 0 Unknown, 0 Unchecked, 4.2s Time] [2024-11-28 04:31:29,363 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2360 states. [2024-11-28 04:31:29,402 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2360 to 2122. [2024-11-28 04:31:29,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2122 states, 1486 states have (on average 2.024899057873486) internal successors, (3009), 2106 states have internal predecessors, (3009), 28 states have call successors, (28), 4 states have call predecessors, (28), 3 states have return successors, (26), 12 states have call predecessors, (26), 26 states have call successors, (26) [2024-11-28 04:31:29,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2122 states to 2122 states and 3063 transitions. [2024-11-28 04:31:29,417 INFO L78 Accepts]: Start accepts. Automaton has 2122 states and 3063 transitions. Word has length 9 [2024-11-28 04:31:29,417 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:31:29,417 INFO L471 AbstractCegarLoop]: Abstraction has 2122 states and 3063 transitions. [2024-11-28 04:31:29,417 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:31:29,418 INFO L276 IsEmpty]: Start isEmpty. Operand 2122 states and 3063 transitions. [2024-11-28 04:31:29,418 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2024-11-28 04:31:29,418 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:31:29,418 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:31:29,428 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27005571-b26c-4ebb-85fe-687e4983ef0a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-28 04:31:29,618 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27005571-b26c-4ebb-85fe-687e4983ef0a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:31:29,619 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 631 more)] === [2024-11-28 04:31:29,619 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:31:29,620 INFO L85 PathProgramCache]: Analyzing trace with hash 1076243184, now seen corresponding path program 1 times [2024-11-28 04:31:29,620 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 04:31:29,620 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [379392789] [2024-11-28 04:31:29,620 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:31:29,621 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:31:29,621 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27005571-b26c-4ebb-85fe-687e4983ef0a/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:31:29,623 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27005571-b26c-4ebb-85fe-687e4983ef0a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:31:29,627 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27005571-b26c-4ebb-85fe-687e4983ef0a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-28 04:31:29,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:31:29,788 INFO L256 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-28 04:31:29,790 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:31:29,799 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 [2024-11-28 04:31:29,816 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:31:29,817 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 04:31:29,817 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 04:31:29,817 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [379392789] [2024-11-28 04:31:29,817 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [379392789] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:31:29,817 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:31:29,817 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-28 04:31:29,817 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [519661733] [2024-11-28 04:31:29,817 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:31:29,818 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 04:31:29,818 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 04:31:29,818 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 04:31:29,818 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 04:31:29,818 INFO L87 Difference]: Start difference. First operand 2122 states and 3063 transitions. Second operand has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:31:32,382 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:31:32,382 INFO L93 Difference]: Finished difference Result 2469 states and 3430 transitions. [2024-11-28 04:31:32,383 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 04:31:32,383 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2024-11-28 04:31:32,383 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:31:32,393 INFO L225 Difference]: With dead ends: 2469 [2024-11-28 04:31:32,394 INFO L226 Difference]: Without dead ends: 2469 [2024-11-28 04:31:32,394 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 04:31:32,395 INFO L435 NwaCegarLoop]: 1234 mSDtfsCounter, 950 mSDsluCounter, 413 mSDsCounter, 0 mSdLazyCounter, 843 mSolverCounterSat, 52 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 955 SdHoareTripleChecker+Valid, 1647 SdHoareTripleChecker+Invalid, 895 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 843 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2024-11-28 04:31:32,395 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [955 Valid, 1647 Invalid, 895 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [52 Valid, 843 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2024-11-28 04:31:32,399 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2469 states. [2024-11-28 04:31:32,438 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2469 to 2074. [2024-11-28 04:31:32,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2074 states, 1486 states have (on average 1.9804845222072678) internal successors, (2943), 2058 states have internal predecessors, (2943), 28 states have call successors, (28), 4 states have call predecessors, (28), 3 states have return successors, (26), 12 states have call predecessors, (26), 26 states have call successors, (26) [2024-11-28 04:31:32,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2074 states to 2074 states and 2997 transitions. [2024-11-28 04:31:32,480 INFO L78 Accepts]: Start accepts. Automaton has 2074 states and 2997 transitions. Word has length 9 [2024-11-28 04:31:32,480 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:31:32,481 INFO L471 AbstractCegarLoop]: Abstraction has 2074 states and 2997 transitions. [2024-11-28 04:31:32,481 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:31:32,481 INFO L276 IsEmpty]: Start isEmpty. Operand 2074 states and 2997 transitions. [2024-11-28 04:31:32,481 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2024-11-28 04:31:32,481 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:31:32,482 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:31:32,494 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27005571-b26c-4ebb-85fe-687e4983ef0a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-28 04:31:32,682 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27005571-b26c-4ebb-85fe-687e4983ef0a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:31:32,683 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr527REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 631 more)] === [2024-11-28 04:31:32,683 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:31:32,683 INFO L85 PathProgramCache]: Analyzing trace with hash -1888589226, now seen corresponding path program 1 times [2024-11-28 04:31:32,684 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 04:31:32,684 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1952143595] [2024-11-28 04:31:32,684 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:31:32,684 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:31:32,685 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27005571-b26c-4ebb-85fe-687e4983ef0a/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:31:32,687 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27005571-b26c-4ebb-85fe-687e4983ef0a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:31:32,690 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27005571-b26c-4ebb-85fe-687e4983ef0a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-28 04:31:32,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:31:32,870 INFO L256 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-28 04:31:32,872 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:31:32,948 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:31:32,949 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 04:31:32,949 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 04:31:32,949 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1952143595] [2024-11-28 04:31:32,949 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1952143595] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:31:32,949 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:31:32,949 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 04:31:32,949 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [792519073] [2024-11-28 04:31:32,949 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:31:32,950 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 04:31:32,950 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 04:31:32,950 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 04:31:32,951 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 04:31:32,951 INFO L87 Difference]: Start difference. First operand 2074 states and 2997 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) [2024-11-28 04:31:33,567 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:31:33,567 INFO L93 Difference]: Finished difference Result 2648 states and 3664 transitions. [2024-11-28 04:31:33,568 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 04:31:33,568 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 [2024-11-28 04:31:33,568 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:31:33,581 INFO L225 Difference]: With dead ends: 2648 [2024-11-28 04:31:33,581 INFO L226 Difference]: Without dead ends: 2648 [2024-11-28 04:31:33,581 INFO L434 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 [2024-11-28 04:31:33,582 INFO L435 NwaCegarLoop]: 1455 mSDtfsCounter, 638 mSDsluCounter, 1198 mSDsCounter, 0 mSdLazyCounter, 190 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 639 SdHoareTripleChecker+Valid, 2653 SdHoareTripleChecker+Invalid, 196 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 190 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-28 04:31:33,583 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [639 Valid, 2653 Invalid, 196 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 190 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-28 04:31:33,591 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2648 states. [2024-11-28 04:31:33,631 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2648 to 2275. [2024-11-28 04:31:33,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2275 states, 1686 states have (on average 1.9875444839857652) internal successors, (3351), 2258 states have internal predecessors, (3351), 29 states have call successors, (29), 4 states have call predecessors, (29), 3 states have return successors, (27), 13 states have call predecessors, (27), 27 states have call successors, (27) [2024-11-28 04:31:33,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2275 states to 2275 states and 3407 transitions. [2024-11-28 04:31:33,644 INFO L78 Accepts]: Start accepts. Automaton has 2275 states and 3407 transitions. Word has length 11 [2024-11-28 04:31:33,644 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:31:33,645 INFO L471 AbstractCegarLoop]: Abstraction has 2275 states and 3407 transitions. [2024-11-28 04:31:33,645 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) [2024-11-28 04:31:33,645 INFO L276 IsEmpty]: Start isEmpty. Operand 2275 states and 3407 transitions. [2024-11-28 04:31:33,646 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2024-11-28 04:31:33,646 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:31:33,646 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:31:33,657 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27005571-b26c-4ebb-85fe-687e4983ef0a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-28 04:31:33,847 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27005571-b26c-4ebb-85fe-687e4983ef0a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:31:33,847 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr335REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 631 more)] === [2024-11-28 04:31:33,848 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:31:33,848 INFO L85 PathProgramCache]: Analyzing trace with hash 1106966110, now seen corresponding path program 1 times [2024-11-28 04:31:33,848 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 04:31:33,848 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [418928919] [2024-11-28 04:31:33,848 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:31:33,848 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:31:33,849 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27005571-b26c-4ebb-85fe-687e4983ef0a/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:31:33,851 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27005571-b26c-4ebb-85fe-687e4983ef0a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:31:33,853 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27005571-b26c-4ebb-85fe-687e4983ef0a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-28 04:31:34,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:31:34,037 INFO L256 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-28 04:31:34,039 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:31:34,048 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 [2024-11-28 04:31:34,181 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:31:34,181 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 04:31:34,181 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 04:31:34,181 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [418928919] [2024-11-28 04:31:34,181 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [418928919] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:31:34,181 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:31:34,181 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 04:31:34,181 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [955233794] [2024-11-28 04:31:34,181 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:31:34,182 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 04:31:34,182 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 04:31:34,182 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 04:31:34,182 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 04:31:34,182 INFO L87 Difference]: Start difference. First operand 2275 states and 3407 transitions. Second operand has 4 states, 3 states have (on average 4.333333333333333) 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) [2024-11-28 04:31:39,221 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:31:39,221 INFO L93 Difference]: Finished difference Result 2614 states and 3532 transitions. [2024-11-28 04:31:39,222 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 04:31:39,222 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.333333333333333) 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 [2024-11-28 04:31:39,222 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:31:39,229 INFO L225 Difference]: With dead ends: 2614 [2024-11-28 04:31:39,230 INFO L226 Difference]: Without dead ends: 2614 [2024-11-28 04:31:39,230 INFO L434 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 [2024-11-28 04:31:39,231 INFO L435 NwaCegarLoop]: 1042 mSDtfsCounter, 636 mSDsluCounter, 1391 mSDsCounter, 0 mSdLazyCounter, 1507 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 637 SdHoareTripleChecker+Valid, 2433 SdHoareTripleChecker+Invalid, 1522 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 1507 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.9s IncrementalHoareTripleChecker+Time [2024-11-28 04:31:39,231 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [637 Valid, 2433 Invalid, 1522 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 1507 Invalid, 0 Unknown, 0 Unchecked, 4.9s Time] [2024-11-28 04:31:39,234 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2614 states. [2024-11-28 04:31:39,269 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2614 to 2224. [2024-11-28 04:31:39,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2224 states, 1635 states have (on average 1.9743119266055047) internal successors, (3228), 2207 states have internal predecessors, (3228), 29 states have call successors, (29), 4 states have call predecessors, (29), 3 states have return successors, (27), 13 states have call predecessors, (27), 27 states have call successors, (27) [2024-11-28 04:31:39,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2224 states to 2224 states and 3284 transitions. [2024-11-28 04:31:39,283 INFO L78 Accepts]: Start accepts. Automaton has 2224 states and 3284 transitions. Word has length 13 [2024-11-28 04:31:39,284 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:31:39,284 INFO L471 AbstractCegarLoop]: Abstraction has 2224 states and 3284 transitions. [2024-11-28 04:31:39,284 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.333333333333333) 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) [2024-11-28 04:31:39,284 INFO L276 IsEmpty]: Start isEmpty. Operand 2224 states and 3284 transitions. [2024-11-28 04:31:39,284 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2024-11-28 04:31:39,284 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:31:39,284 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:31:39,299 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27005571-b26c-4ebb-85fe-687e4983ef0a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-28 04:31:39,485 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27005571-b26c-4ebb-85fe-687e4983ef0a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:31:39,485 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr334REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 631 more)] === [2024-11-28 04:31:39,485 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:31:39,485 INFO L85 PathProgramCache]: Analyzing trace with hash 1106966109, now seen corresponding path program 1 times [2024-11-28 04:31:39,486 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 04:31:39,486 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1840085829] [2024-11-28 04:31:39,486 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:31:39,486 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:31:39,486 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27005571-b26c-4ebb-85fe-687e4983ef0a/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:31:39,488 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27005571-b26c-4ebb-85fe-687e4983ef0a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:31:39,489 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27005571-b26c-4ebb-85fe-687e4983ef0a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-28 04:31:39,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:31:39,647 INFO L256 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-28 04:31:39,650 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:31:39,656 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 [2024-11-28 04:31:39,708 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:31:39,709 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 04:31:39,709 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 04:31:39,709 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1840085829] [2024-11-28 04:31:39,709 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1840085829] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:31:39,709 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:31:39,709 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 04:31:39,709 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [142164438] [2024-11-28 04:31:39,709 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:31:39,710 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 04:31:39,710 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 04:31:39,710 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 04:31:39,710 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 04:31:39,710 INFO L87 Difference]: Start difference. First operand 2224 states and 3284 transitions. Second operand has 4 states, 3 states have (on average 4.333333333333333) 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) [2024-11-28 04:31:42,944 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:31:42,944 INFO L93 Difference]: Finished difference Result 2425 states and 3408 transitions. [2024-11-28 04:31:42,945 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 04:31:42,945 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.333333333333333) 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 [2024-11-28 04:31:42,945 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:31:42,952 INFO L225 Difference]: With dead ends: 2425 [2024-11-28 04:31:42,952 INFO L226 Difference]: Without dead ends: 2425 [2024-11-28 04:31:42,952 INFO L434 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 [2024-11-28 04:31:42,952 INFO L435 NwaCegarLoop]: 779 mSDtfsCounter, 1151 mSDsluCounter, 899 mSDsCounter, 0 mSdLazyCounter, 1270 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1155 SdHoareTripleChecker+Valid, 1678 SdHoareTripleChecker+Invalid, 1299 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 1270 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2024-11-28 04:31:42,953 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1155 Valid, 1678 Invalid, 1299 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 1270 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time] [2024-11-28 04:31:42,956 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2425 states. [2024-11-28 04:31:42,985 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2425 to 2201. [2024-11-28 04:31:42,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2201 states, 1635 states have (on average 1.9058103975535168) internal successors, (3116), 2184 states have internal predecessors, (3116), 29 states have call successors, (29), 4 states have call predecessors, (29), 3 states have return successors, (27), 13 states have call predecessors, (27), 27 states have call successors, (27) [2024-11-28 04:31:42,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2201 states to 2201 states and 3172 transitions. [2024-11-28 04:31:42,994 INFO L78 Accepts]: Start accepts. Automaton has 2201 states and 3172 transitions. Word has length 13 [2024-11-28 04:31:42,995 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:31:42,995 INFO L471 AbstractCegarLoop]: Abstraction has 2201 states and 3172 transitions. [2024-11-28 04:31:42,995 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.333333333333333) 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) [2024-11-28 04:31:42,995 INFO L276 IsEmpty]: Start isEmpty. Operand 2201 states and 3172 transitions. [2024-11-28 04:31:42,995 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2024-11-28 04:31:42,995 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:31:42,996 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:31:43,006 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27005571-b26c-4ebb-85fe-687e4983ef0a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-11-28 04:31:43,196 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27005571-b26c-4ebb-85fe-687e4983ef0a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:31:43,197 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr632ASSERT_VIOLATIONMEMORY_LEAK === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 631 more)] === [2024-11-28 04:31:43,197 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:31:43,197 INFO L85 PathProgramCache]: Analyzing trace with hash 1117471069, now seen corresponding path program 1 times [2024-11-28 04:31:43,197 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 04:31:43,198 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [838509088] [2024-11-28 04:31:43,198 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:31:43,199 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:31:43,199 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27005571-b26c-4ebb-85fe-687e4983ef0a/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:31:43,201 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27005571-b26c-4ebb-85fe-687e4983ef0a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:31:43,205 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27005571-b26c-4ebb-85fe-687e4983ef0a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-28 04:31:43,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:31:43,367 INFO L256 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-28 04:31:43,369 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:31:43,382 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-28 04:31:43,383 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-28 04:31:43,384 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-28 04:31:43,391 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 [2024-11-28 04:31:43,476 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-28 04:31:43,477 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 [2024-11-28 04:31:43,497 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:31:43,497 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 04:31:43,497 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 04:31:43,497 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [838509088] [2024-11-28 04:31:43,497 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [838509088] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:31:43,497 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:31:43,497 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-28 04:31:43,497 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [199418592] [2024-11-28 04:31:43,498 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:31:43,498 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 04:31:43,498 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 04:31:43,498 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 04:31:43,498 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 04:31:43,498 INFO L87 Difference]: Start difference. First operand 2201 states and 3172 transitions. Second operand has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:31:44,260 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:31:44,260 INFO L93 Difference]: Finished difference Result 3270 states and 4380 transitions. [2024-11-28 04:31:44,261 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 04:31:44,261 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 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 14 [2024-11-28 04:31:44,261 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:31:44,271 INFO L225 Difference]: With dead ends: 3270 [2024-11-28 04:31:44,272 INFO L226 Difference]: Without dead ends: 3270 [2024-11-28 04:31:44,272 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-28 04:31:44,272 INFO L435 NwaCegarLoop]: 1246 mSDtfsCounter, 1142 mSDsluCounter, 2477 mSDsCounter, 0 mSdLazyCounter, 148 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1147 SdHoareTripleChecker+Valid, 3723 SdHoareTripleChecker+Invalid, 149 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 148 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-28 04:31:44,273 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1147 Valid, 3723 Invalid, 149 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 148 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-28 04:31:44,276 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3270 states. [2024-11-28 04:31:44,307 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3270 to 1881. [2024-11-28 04:31:44,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1881 states, 1317 states have (on average 1.9073652239939256) internal successors, (2512), 1866 states have internal predecessors, (2512), 27 states have call successors, (27), 4 states have call predecessors, (27), 3 states have return successors, (25), 11 states have call predecessors, (25), 25 states have call successors, (25) [2024-11-28 04:31:44,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1881 states to 1881 states and 2564 transitions. [2024-11-28 04:31:44,314 INFO L78 Accepts]: Start accepts. Automaton has 1881 states and 2564 transitions. Word has length 14 [2024-11-28 04:31:44,314 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:31:44,315 INFO L471 AbstractCegarLoop]: Abstraction has 1881 states and 2564 transitions. [2024-11-28 04:31:44,315 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:31:44,315 INFO L276 IsEmpty]: Start isEmpty. Operand 1881 states and 2564 transitions. [2024-11-28 04:31:44,315 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2024-11-28 04:31:44,315 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:31:44,315 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:31:44,326 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27005571-b26c-4ebb-85fe-687e4983ef0a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-11-28 04:31:44,519 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27005571-b26c-4ebb-85fe-687e4983ef0a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:31:44,520 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr14REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 631 more)] === [2024-11-28 04:31:44,524 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:31:44,524 INFO L85 PathProgramCache]: Analyzing trace with hash -1644780993, now seen corresponding path program 1 times [2024-11-28 04:31:44,525 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 04:31:44,525 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1369703641] [2024-11-28 04:31:44,525 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:31:44,525 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:31:44,525 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27005571-b26c-4ebb-85fe-687e4983ef0a/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:31:44,527 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27005571-b26c-4ebb-85fe-687e4983ef0a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:31:44,530 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27005571-b26c-4ebb-85fe-687e4983ef0a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-28 04:31:44,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:31:44,730 INFO L256 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-28 04:31:44,731 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:31:44,781 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:31:44,782 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 04:31:44,782 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 04:31:44,782 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1369703641] [2024-11-28 04:31:44,782 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1369703641] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:31:44,782 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:31:44,782 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 04:31:44,782 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1791766314] [2024-11-28 04:31:44,782 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:31:44,782 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 04:31:44,782 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 04:31:44,783 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 04:31:44,783 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 04:31:44,783 INFO L87 Difference]: Start difference. First operand 1881 states and 2564 transitions. Second operand has 4 states, 3 states have (on average 6.333333333333333) internal successors, (19), 4 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:31:47,932 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:31:47,933 INFO L93 Difference]: Finished difference Result 1879 states and 2542 transitions. [2024-11-28 04:31:47,933 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 04:31:47,934 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 6.333333333333333) internal successors, (19), 4 states have internal predecessors, (19), 0 states have call successors, (0), 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 19 [2024-11-28 04:31:47,934 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:31:47,944 INFO L225 Difference]: With dead ends: 1879 [2024-11-28 04:31:47,946 INFO L226 Difference]: Without dead ends: 1879 [2024-11-28 04:31:47,946 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-28 04:31:47,947 INFO L435 NwaCegarLoop]: 808 mSDtfsCounter, 976 mSDsluCounter, 815 mSDsCounter, 0 mSdLazyCounter, 1222 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 981 SdHoareTripleChecker+Valid, 1623 SdHoareTripleChecker+Invalid, 1251 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 1222 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2024-11-28 04:31:47,947 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [981 Valid, 1623 Invalid, 1251 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 1222 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2024-11-28 04:31:47,950 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1879 states. [2024-11-28 04:31:47,977 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1879 to 1858. [2024-11-28 04:31:47,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1858 states, 1317 states have (on average 1.8724373576309794) internal successors, (2466), 1843 states have internal predecessors, (2466), 27 states have call successors, (27), 4 states have call predecessors, (27), 3 states have return successors, (25), 11 states have call predecessors, (25), 25 states have call successors, (25) [2024-11-28 04:31:48,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1858 states to 1858 states and 2518 transitions. [2024-11-28 04:31:48,013 INFO L78 Accepts]: Start accepts. Automaton has 1858 states and 2518 transitions. Word has length 19 [2024-11-28 04:31:48,013 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:31:48,013 INFO L471 AbstractCegarLoop]: Abstraction has 1858 states and 2518 transitions. [2024-11-28 04:31:48,013 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 6.333333333333333) internal successors, (19), 4 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:31:48,013 INFO L276 IsEmpty]: Start isEmpty. Operand 1858 states and 2518 transitions. [2024-11-28 04:31:48,013 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2024-11-28 04:31:48,014 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:31:48,014 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:31:48,028 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27005571-b26c-4ebb-85fe-687e4983ef0a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2024-11-28 04:31:48,214 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27005571-b26c-4ebb-85fe-687e4983ef0a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:31:48,215 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr15REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 631 more)] === [2024-11-28 04:31:48,215 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:31:48,216 INFO L85 PathProgramCache]: Analyzing trace with hash -1644780992, now seen corresponding path program 1 times [2024-11-28 04:31:48,216 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 04:31:48,216 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1731841561] [2024-11-28 04:31:48,216 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:31:48,216 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:31:48,216 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27005571-b26c-4ebb-85fe-687e4983ef0a/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:31:48,218 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27005571-b26c-4ebb-85fe-687e4983ef0a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:31:48,222 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27005571-b26c-4ebb-85fe-687e4983ef0a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-28 04:31:48,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:31:48,432 INFO L256 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-28 04:31:48,434 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:31:48,446 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 [2024-11-28 04:31:48,583 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:31:48,583 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 04:31:48,583 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 04:31:48,583 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1731841561] [2024-11-28 04:31:48,583 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1731841561] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:31:48,583 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:31:48,584 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 04:31:48,584 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1611815259] [2024-11-28 04:31:48,584 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:31:48,584 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 04:31:48,584 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 04:31:48,585 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 04:31:48,585 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 04:31:48,585 INFO L87 Difference]: Start difference. First operand 1858 states and 2518 transitions. Second operand has 4 states, 3 states have (on average 6.333333333333333) internal successors, (19), 4 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:31:54,347 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:31:54,347 INFO L93 Difference]: Finished difference Result 2205 states and 2682 transitions. [2024-11-28 04:31:54,348 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 04:31:54,348 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 6.333333333333333) internal successors, (19), 4 states have internal predecessors, (19), 0 states have call successors, (0), 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 19 [2024-11-28 04:31:54,348 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:31:54,354 INFO L225 Difference]: With dead ends: 2205 [2024-11-28 04:31:54,354 INFO L226 Difference]: Without dead ends: 2205 [2024-11-28 04:31:54,354 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-28 04:31:54,355 INFO L435 NwaCegarLoop]: 1458 mSDtfsCounter, 811 mSDsluCounter, 1511 mSDsCounter, 0 mSdLazyCounter, 1706 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 813 SdHoareTripleChecker+Valid, 2969 SdHoareTripleChecker+Invalid, 1728 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 1706 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.7s IncrementalHoareTripleChecker+Time [2024-11-28 04:31:54,355 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [813 Valid, 2969 Invalid, 1728 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 1706 Invalid, 0 Unknown, 0 Unchecked, 5.7s Time] [2024-11-28 04:31:54,358 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2205 states. [2024-11-28 04:31:54,379 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2205 to 1974. [2024-11-28 04:31:54,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1974 states, 1433 states have (on average 1.8185624563852059) internal successors, (2606), 1959 states have internal predecessors, (2606), 27 states have call successors, (27), 4 states have call predecessors, (27), 3 states have return successors, (25), 11 states have call predecessors, (25), 25 states have call successors, (25) [2024-11-28 04:31:54,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1974 states to 1974 states and 2658 transitions. [2024-11-28 04:31:54,387 INFO L78 Accepts]: Start accepts. Automaton has 1974 states and 2658 transitions. Word has length 19 [2024-11-28 04:31:54,387 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:31:54,387 INFO L471 AbstractCegarLoop]: Abstraction has 1974 states and 2658 transitions. [2024-11-28 04:31:54,388 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 6.333333333333333) internal successors, (19), 4 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:31:54,388 INFO L276 IsEmpty]: Start isEmpty. Operand 1974 states and 2658 transitions. [2024-11-28 04:31:54,389 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2024-11-28 04:31:54,389 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:31:54,389 INFO L218 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:31:54,401 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27005571-b26c-4ebb-85fe-687e4983ef0a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2024-11-28 04:31:54,589 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27005571-b26c-4ebb-85fe-687e4983ef0a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:31:54,590 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr15REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 631 more)] === [2024-11-28 04:31:54,590 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:31:54,590 INFO L85 PathProgramCache]: Analyzing trace with hash -1472731388, now seen corresponding path program 1 times [2024-11-28 04:31:54,591 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 04:31:54,591 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [918792805] [2024-11-28 04:31:54,591 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:31:54,591 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:31:54,591 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27005571-b26c-4ebb-85fe-687e4983ef0a/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:31:54,594 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27005571-b26c-4ebb-85fe-687e4983ef0a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:31:54,598 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27005571-b26c-4ebb-85fe-687e4983ef0a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-11-28 04:31:54,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:31:54,841 INFO L256 TraceCheckSpWp]: Trace formula consists of 202 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-28 04:31:54,843 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:31:54,857 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2024-11-28 04:31:55,208 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:31:55,209 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:31:55,923 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:31:55,923 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 04:31:55,923 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [918792805] [2024-11-28 04:31:55,923 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [918792805] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:31:55,923 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-28 04:31:55,923 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 7 [2024-11-28 04:31:55,923 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [233442570] [2024-11-28 04:31:55,923 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-28 04:31:55,924 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-28 04:31:55,924 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 04:31:55,924 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-28 04:31:55,925 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-11-28 04:31:55,925 INFO L87 Difference]: Start difference. First operand 1974 states and 2658 transitions. Second operand has 8 states, 7 states have (on average 10.142857142857142) internal successors, (71), 8 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:32:12,458 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:32:12,458 INFO L93 Difference]: Finished difference Result 2567 states and 3178 transitions. [2024-11-28 04:32:12,459 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-28 04:32:12,459 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 10.142857142857142) internal successors, (71), 8 states have internal predecessors, (71), 0 states have call successors, (0), 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 38 [2024-11-28 04:32:12,459 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:32:12,466 INFO L225 Difference]: With dead ends: 2567 [2024-11-28 04:32:12,466 INFO L226 Difference]: Without dead ends: 2567 [2024-11-28 04:32:12,467 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 68 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=48, Invalid=84, Unknown=0, NotChecked=0, Total=132 [2024-11-28 04:32:12,467 INFO L435 NwaCegarLoop]: 1486 mSDtfsCounter, 1469 mSDsluCounter, 3990 mSDsCounter, 0 mSdLazyCounter, 3993 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 14.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1472 SdHoareTripleChecker+Valid, 5476 SdHoareTripleChecker+Invalid, 4020 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 3993 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 16.2s IncrementalHoareTripleChecker+Time [2024-11-28 04:32:12,468 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1472 Valid, 5476 Invalid, 4020 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 3993 Invalid, 0 Unknown, 0 Unchecked, 16.2s Time] [2024-11-28 04:32:12,470 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2567 states. [2024-11-28 04:32:12,498 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2567 to 2140. [2024-11-28 04:32:12,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2140 states, 1599 states have (on average 1.7761100687929956) internal successors, (2840), 2125 states have internal predecessors, (2840), 27 states have call successors, (27), 4 states have call predecessors, (27), 3 states have return successors, (25), 11 states have call predecessors, (25), 25 states have call successors, (25) [2024-11-28 04:32:12,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2140 states to 2140 states and 2892 transitions. [2024-11-28 04:32:12,505 INFO L78 Accepts]: Start accepts. Automaton has 2140 states and 2892 transitions. Word has length 38 [2024-11-28 04:32:12,506 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:32:12,506 INFO L471 AbstractCegarLoop]: Abstraction has 2140 states and 2892 transitions. [2024-11-28 04:32:12,506 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 10.142857142857142) internal successors, (71), 8 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:32:12,506 INFO L276 IsEmpty]: Start isEmpty. Operand 2140 states and 2892 transitions. [2024-11-28 04:32:12,507 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2024-11-28 04:32:12,508 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:32:12,508 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:32:12,526 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27005571-b26c-4ebb-85fe-687e4983ef0a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2024-11-28 04:32:12,708 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27005571-b26c-4ebb-85fe-687e4983ef0a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:32:12,709 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr71REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 631 more)] === [2024-11-28 04:32:12,709 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:32:12,709 INFO L85 PathProgramCache]: Analyzing trace with hash -1846854937, now seen corresponding path program 1 times [2024-11-28 04:32:12,709 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 04:32:12,709 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [132719920] [2024-11-28 04:32:12,709 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:32:12,710 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:32:12,710 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27005571-b26c-4ebb-85fe-687e4983ef0a/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:32:12,711 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27005571-b26c-4ebb-85fe-687e4983ef0a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:32:12,712 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27005571-b26c-4ebb-85fe-687e4983ef0a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-11-28 04:32:12,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:32:12,951 INFO L256 TraceCheckSpWp]: Trace formula consists of 255 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-28 04:32:12,953 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:32:13,014 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:32:13,014 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 04:32:13,014 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 04:32:13,014 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [132719920] [2024-11-28 04:32:13,014 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [132719920] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:32:13,014 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:32:13,015 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-28 04:32:13,015 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [807950514] [2024-11-28 04:32:13,015 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:32:13,015 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 04:32:13,015 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 04:32:13,015 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 04:32:13,015 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 04:32:13,016 INFO L87 Difference]: Start difference. First operand 2140 states and 2892 transitions. Second operand has 4 states, 4 states have (on average 13.5) internal successors, (54), 4 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:32:13,157 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:32:13,157 INFO L93 Difference]: Finished difference Result 1825 states and 2452 transitions. [2024-11-28 04:32:13,158 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 04:32:13,158 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.5) internal successors, (54), 4 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 54 [2024-11-28 04:32:13,158 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:32:13,165 INFO L225 Difference]: With dead ends: 1825 [2024-11-28 04:32:13,165 INFO L226 Difference]: Without dead ends: 1825 [2024-11-28 04:32:13,165 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 51 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-28 04:32:13,166 INFO L435 NwaCegarLoop]: 1206 mSDtfsCounter, 56 mSDsluCounter, 2339 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56 SdHoareTripleChecker+Valid, 3545 SdHoareTripleChecker+Invalid, 77 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 04:32:13,166 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [56 Valid, 3545 Invalid, 77 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 04:32:13,169 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1825 states. [2024-11-28 04:32:13,206 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1825 to 1823. [2024-11-28 04:32:13,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1823 states, 1305 states have (on average 1.8375478927203066) internal successors, (2398), 1808 states have internal predecessors, (2398), 27 states have call successors, (27), 4 states have call predecessors, (27), 3 states have return successors, (25), 11 states have call predecessors, (25), 25 states have call successors, (25) [2024-11-28 04:32:13,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1823 states to 1823 states and 2450 transitions. [2024-11-28 04:32:13,213 INFO L78 Accepts]: Start accepts. Automaton has 1823 states and 2450 transitions. Word has length 54 [2024-11-28 04:32:13,213 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:32:13,213 INFO L471 AbstractCegarLoop]: Abstraction has 1823 states and 2450 transitions. [2024-11-28 04:32:13,213 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.5) internal successors, (54), 4 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:32:13,213 INFO L276 IsEmpty]: Start isEmpty. Operand 1823 states and 2450 transitions. [2024-11-28 04:32:13,215 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2024-11-28 04:32:13,216 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:32:13,216 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:32:13,232 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27005571-b26c-4ebb-85fe-687e4983ef0a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2024-11-28 04:32:13,418 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27005571-b26c-4ebb-85fe-687e4983ef0a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:32:13,419 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr71REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 631 more)] === [2024-11-28 04:32:13,419 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:32:13,419 INFO L85 PathProgramCache]: Analyzing trace with hash 1836661275, now seen corresponding path program 1 times [2024-11-28 04:32:13,420 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 04:32:13,420 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [603611903] [2024-11-28 04:32:13,420 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:32:13,420 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:32:13,420 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27005571-b26c-4ebb-85fe-687e4983ef0a/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:32:13,423 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27005571-b26c-4ebb-85fe-687e4983ef0a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:32:13,428 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27005571-b26c-4ebb-85fe-687e4983ef0a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-11-28 04:32:13,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:32:13,743 INFO L256 TraceCheckSpWp]: Trace formula consists of 279 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-28 04:32:13,747 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:32:13,756 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 [2024-11-28 04:32:14,548 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 04:32:14,549 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 [2024-11-28 04:32:14,571 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2024-11-28 04:32:14,571 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 [2024-11-28 04:32:14,581 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:32:14,582 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 04:32:14,582 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 04:32:14,582 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [603611903] [2024-11-28 04:32:14,582 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [603611903] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:32:14,582 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:32:14,582 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 04:32:14,582 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [646584986] [2024-11-28 04:32:14,582 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:32:14,583 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 04:32:14,583 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 04:32:14,583 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 04:32:14,583 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-28 04:32:14,583 INFO L87 Difference]: Start difference. First operand 1823 states and 2450 transitions. Second operand has 4 states, 3 states have (on average 20.666666666666668) internal successors, (62), 4 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:32:17,516 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:32:17,517 INFO L93 Difference]: Finished difference Result 1796 states and 2424 transitions. [2024-11-28 04:32:17,517 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 04:32:17,517 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 20.666666666666668) internal successors, (62), 4 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 62 [2024-11-28 04:32:17,518 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:32:17,522 INFO L225 Difference]: With dead ends: 1796 [2024-11-28 04:32:17,522 INFO L226 Difference]: Without dead ends: 1796 [2024-11-28 04:32:17,523 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 59 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-28 04:32:17,523 INFO L435 NwaCegarLoop]: 608 mSDtfsCounter, 1628 mSDsluCounter, 192 mSDsCounter, 0 mSdLazyCounter, 714 mSolverCounterSat, 52 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1633 SdHoareTripleChecker+Valid, 800 SdHoareTripleChecker+Invalid, 766 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 714 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2024-11-28 04:32:17,524 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1633 Valid, 800 Invalid, 766 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [52 Valid, 714 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2024-11-28 04:32:17,526 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1796 states. [2024-11-28 04:32:17,542 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1796 to 1358. [2024-11-28 04:32:17,544 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1358 states, 883 states have (on average 1.7599093997734994) internal successors, (1554), 1346 states have internal predecessors, (1554), 24 states have call successors, (24), 4 states have call predecessors, (24), 3 states have return successors, (22), 8 states have call predecessors, (22), 22 states have call successors, (22) [2024-11-28 04:32:17,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1358 states to 1358 states and 1600 transitions. [2024-11-28 04:32:17,548 INFO L78 Accepts]: Start accepts. Automaton has 1358 states and 1600 transitions. Word has length 62 [2024-11-28 04:32:17,548 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:32:17,548 INFO L471 AbstractCegarLoop]: Abstraction has 1358 states and 1600 transitions. [2024-11-28 04:32:17,548 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 20.666666666666668) internal successors, (62), 4 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:32:17,548 INFO L276 IsEmpty]: Start isEmpty. Operand 1358 states and 1600 transitions. [2024-11-28 04:32:17,549 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2024-11-28 04:32:17,549 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:32:17,550 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:32:17,565 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27005571-b26c-4ebb-85fe-687e4983ef0a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2024-11-28 04:32:17,750 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27005571-b26c-4ebb-85fe-687e4983ef0a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:32:17,750 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr76REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 631 more)] === [2024-11-28 04:32:17,751 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:32:17,751 INFO L85 PathProgramCache]: Analyzing trace with hash 1380689791, now seen corresponding path program 1 times [2024-11-28 04:32:17,751 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 04:32:17,751 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [747394362] [2024-11-28 04:32:17,751 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:32:17,751 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:32:17,752 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27005571-b26c-4ebb-85fe-687e4983ef0a/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:32:17,753 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27005571-b26c-4ebb-85fe-687e4983ef0a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:32:17,755 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27005571-b26c-4ebb-85fe-687e4983ef0a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-11-28 04:32:18,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:32:18,014 INFO L256 TraceCheckSpWp]: Trace formula consists of 306 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-28 04:32:18,016 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:32:18,023 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 [2024-11-28 04:32:18,060 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 [2024-11-28 04:32:18,094 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 [2024-11-28 04:32:18,107 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:32:18,108 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 04:32:18,108 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 04:32:18,108 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [747394362] [2024-11-28 04:32:18,108 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [747394362] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:32:18,108 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:32:18,108 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-28 04:32:18,108 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1407530638] [2024-11-28 04:32:18,108 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:32:18,109 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-28 04:32:18,109 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 04:32:18,109 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-28 04:32:18,109 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-28 04:32:18,109 INFO L87 Difference]: Start difference. First operand 1358 states and 1600 transitions. Second operand has 5 states, 4 states have (on average 16.75) internal successors, (67), 5 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:32:21,513 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:32:21,513 INFO L93 Difference]: Finished difference Result 1357 states and 1599 transitions. [2024-11-28 04:32:21,514 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-28 04:32:21,514 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 16.75) internal successors, (67), 5 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2024-11-28 04:32:21,514 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:32:21,517 INFO L225 Difference]: With dead ends: 1357 [2024-11-28 04:32:21,517 INFO L226 Difference]: Without dead ends: 1357 [2024-11-28 04:32:21,517 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 63 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-28 04:32:21,518 INFO L435 NwaCegarLoop]: 1177 mSDtfsCounter, 2 mSDsluCounter, 1991 mSDsCounter, 0 mSdLazyCounter, 1547 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 3168 SdHoareTripleChecker+Invalid, 1548 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1547 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2024-11-28 04:32:21,518 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 3168 Invalid, 1548 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1547 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time] [2024-11-28 04:32:21,521 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1357 states. [2024-11-28 04:32:21,532 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1357 to 1357. [2024-11-28 04:32:21,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1357 states, 883 states have (on average 1.7587768969422424) internal successors, (1553), 1345 states have internal predecessors, (1553), 24 states have call successors, (24), 4 states have call predecessors, (24), 3 states have return successors, (22), 8 states have call predecessors, (22), 22 states have call successors, (22) [2024-11-28 04:32:21,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1357 states to 1357 states and 1599 transitions. [2024-11-28 04:32:21,539 INFO L78 Accepts]: Start accepts. Automaton has 1357 states and 1599 transitions. Word has length 67 [2024-11-28 04:32:21,539 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:32:21,539 INFO L471 AbstractCegarLoop]: Abstraction has 1357 states and 1599 transitions. [2024-11-28 04:32:21,539 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 16.75) internal successors, (67), 5 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:32:21,540 INFO L276 IsEmpty]: Start isEmpty. Operand 1357 states and 1599 transitions. [2024-11-28 04:32:21,540 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2024-11-28 04:32:21,540 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:32:21,541 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:32:21,556 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27005571-b26c-4ebb-85fe-687e4983ef0a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2024-11-28 04:32:21,741 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27005571-b26c-4ebb-85fe-687e4983ef0a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:32:21,741 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr77REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 631 more)] === [2024-11-28 04:32:21,742 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:32:21,742 INFO L85 PathProgramCache]: Analyzing trace with hash 1380689792, now seen corresponding path program 1 times [2024-11-28 04:32:21,742 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 04:32:21,742 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1395702890] [2024-11-28 04:32:21,742 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:32:21,742 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:32:21,743 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27005571-b26c-4ebb-85fe-687e4983ef0a/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:32:21,744 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27005571-b26c-4ebb-85fe-687e4983ef0a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:32:21,746 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27005571-b26c-4ebb-85fe-687e4983ef0a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2024-11-28 04:32:22,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:32:22,056 INFO L256 TraceCheckSpWp]: Trace formula consists of 306 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-28 04:32:22,059 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:32:22,074 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2024-11-28 04:32:22,095 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 [2024-11-28 04:32:22,101 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 [2024-11-28 04:32:22,162 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 [2024-11-28 04:32:22,186 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:32:22,186 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 04:32:22,186 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 04:32:22,186 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1395702890] [2024-11-28 04:32:22,186 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1395702890] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:32:22,186 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:32:22,186 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-28 04:32:22,187 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1356962619] [2024-11-28 04:32:22,187 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:32:22,187 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-28 04:32:22,187 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 04:32:22,187 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-28 04:32:22,187 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-28 04:32:22,188 INFO L87 Difference]: Start difference. First operand 1357 states and 1599 transitions. Second operand has 5 states, 4 states have (on average 16.75) internal successors, (67), 5 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:32:26,443 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:32:26,443 INFO L93 Difference]: Finished difference Result 1356 states and 1598 transitions. [2024-11-28 04:32:26,444 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-28 04:32:26,444 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 16.75) internal successors, (67), 5 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2024-11-28 04:32:26,444 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:32:26,447 INFO L225 Difference]: With dead ends: 1356 [2024-11-28 04:32:26,447 INFO L226 Difference]: Without dead ends: 1356 [2024-11-28 04:32:26,448 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 63 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-28 04:32:26,448 INFO L435 NwaCegarLoop]: 1177 mSDtfsCounter, 1 mSDsluCounter, 1945 mSDsCounter, 0 mSdLazyCounter, 1590 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 3122 SdHoareTripleChecker+Invalid, 1591 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1590 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.2s IncrementalHoareTripleChecker+Time [2024-11-28 04:32:26,449 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 3122 Invalid, 1591 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1590 Invalid, 0 Unknown, 0 Unchecked, 4.2s Time] [2024-11-28 04:32:26,451 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1356 states. [2024-11-28 04:32:26,464 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1356 to 1356. [2024-11-28 04:32:26,466 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1356 states, 882 states have (on average 1.7596371882086168) internal successors, (1552), 1344 states have internal predecessors, (1552), 24 states have call successors, (24), 4 states have call predecessors, (24), 3 states have return successors, (22), 8 states have call predecessors, (22), 22 states have call successors, (22) [2024-11-28 04:32:26,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1356 states to 1356 states and 1598 transitions. [2024-11-28 04:32:26,469 INFO L78 Accepts]: Start accepts. Automaton has 1356 states and 1598 transitions. Word has length 67 [2024-11-28 04:32:26,469 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:32:26,469 INFO L471 AbstractCegarLoop]: Abstraction has 1356 states and 1598 transitions. [2024-11-28 04:32:26,469 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 16.75) internal successors, (67), 5 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:32:26,469 INFO L276 IsEmpty]: Start isEmpty. Operand 1356 states and 1598 transitions. [2024-11-28 04:32:26,470 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2024-11-28 04:32:26,470 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:32:26,470 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:32:26,489 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27005571-b26c-4ebb-85fe-687e4983ef0a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2024-11-28 04:32:26,671 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27005571-b26c-4ebb-85fe-687e4983ef0a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:32:26,671 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr80REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 631 more)] === [2024-11-28 04:32:26,671 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:32:26,672 INFO L85 PathProgramCache]: Analyzing trace with hash 1781629702, now seen corresponding path program 1 times [2024-11-28 04:32:26,672 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 04:32:26,672 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [897957138] [2024-11-28 04:32:26,672 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:32:26,672 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:32:26,672 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27005571-b26c-4ebb-85fe-687e4983ef0a/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:32:26,674 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27005571-b26c-4ebb-85fe-687e4983ef0a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:32:26,677 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27005571-b26c-4ebb-85fe-687e4983ef0a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2024-11-28 04:32:26,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:32:26,971 INFO L256 TraceCheckSpWp]: Trace formula consists of 332 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-28 04:32:26,974 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:32:26,983 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 [2024-11-28 04:32:27,083 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 [2024-11-28 04:32:27,100 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:32:27,100 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 04:32:27,103 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 04:32:27,103 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [897957138] [2024-11-28 04:32:27,103 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [897957138] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:32:27,103 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:32:27,104 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-28 04:32:27,104 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [501059541] [2024-11-28 04:32:27,104 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:32:27,104 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-28 04:32:27,104 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 04:32:27,105 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-28 04:32:27,105 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-11-28 04:32:27,105 INFO L87 Difference]: Start difference. First operand 1356 states and 1598 transitions. Second operand has 7 states, 5 states have (on average 14.6) internal successors, (73), 6 states have internal predecessors, (73), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-28 04:32:31,178 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:32:31,178 INFO L93 Difference]: Finished difference Result 1368 states and 1613 transitions. [2024-11-28 04:32:31,178 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-28 04:32:31,179 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 5 states have (on average 14.6) internal successors, (73), 6 states have internal predecessors, (73), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 75 [2024-11-28 04:32:31,179 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:32:31,181 INFO L225 Difference]: With dead ends: 1368 [2024-11-28 04:32:31,181 INFO L226 Difference]: Without dead ends: 1368 [2024-11-28 04:32:31,182 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 69 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-11-28 04:32:31,182 INFO L435 NwaCegarLoop]: 1099 mSDtfsCounter, 61 mSDsluCounter, 2968 mSDsCounter, 0 mSdLazyCounter, 1830 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 76 SdHoareTripleChecker+Valid, 4067 SdHoareTripleChecker+Invalid, 1837 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 1830 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.0s IncrementalHoareTripleChecker+Time [2024-11-28 04:32:31,182 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [76 Valid, 4067 Invalid, 1837 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 1830 Invalid, 0 Unknown, 0 Unchecked, 4.0s Time] [2024-11-28 04:32:31,184 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1368 states. [2024-11-28 04:32:31,197 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1368 to 1362. [2024-11-28 04:32:31,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1362 states, 887 states have (on average 1.7576099210823) internal successors, (1559), 1349 states have internal predecessors, (1559), 24 states have call successors, (24), 4 states have call predecessors, (24), 4 states have return successors, (25), 9 states have call predecessors, (25), 22 states have call successors, (25) [2024-11-28 04:32:31,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1362 states to 1362 states and 1608 transitions. [2024-11-28 04:32:31,200 INFO L78 Accepts]: Start accepts. Automaton has 1362 states and 1608 transitions. Word has length 75 [2024-11-28 04:32:31,200 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:32:31,200 INFO L471 AbstractCegarLoop]: Abstraction has 1362 states and 1608 transitions. [2024-11-28 04:32:31,200 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 5 states have (on average 14.6) internal successors, (73), 6 states have internal predecessors, (73), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-28 04:32:31,200 INFO L276 IsEmpty]: Start isEmpty. Operand 1362 states and 1608 transitions. [2024-11-28 04:32:31,201 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2024-11-28 04:32:31,201 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:32:31,201 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:32:31,211 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27005571-b26c-4ebb-85fe-687e4983ef0a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2024-11-28 04:32:31,402 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27005571-b26c-4ebb-85fe-687e4983ef0a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:32:31,402 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr81REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 631 more)] === [2024-11-28 04:32:31,402 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:32:31,402 INFO L85 PathProgramCache]: Analyzing trace with hash 1781629703, now seen corresponding path program 1 times [2024-11-28 04:32:31,402 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 04:32:31,402 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1622225157] [2024-11-28 04:32:31,403 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:32:31,403 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:32:31,403 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27005571-b26c-4ebb-85fe-687e4983ef0a/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:32:31,404 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27005571-b26c-4ebb-85fe-687e4983ef0a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:32:31,406 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27005571-b26c-4ebb-85fe-687e4983ef0a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2024-11-28 04:32:31,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:32:31,706 INFO L256 TraceCheckSpWp]: Trace formula consists of 332 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-28 04:32:31,708 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:32:31,734 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:32:31,734 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 04:32:31,734 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 04:32:31,734 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1622225157] [2024-11-28 04:32:31,734 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1622225157] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:32:31,734 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:32:31,735 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-28 04:32:31,735 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [61447991] [2024-11-28 04:32:31,735 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:32:31,735 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 04:32:31,735 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 04:32:31,736 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 04:32:31,736 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 04:32:31,736 INFO L87 Difference]: Start difference. First operand 1362 states and 1608 transitions. Second operand has 4 states, 4 states have (on average 18.25) internal successors, (73), 4 states have internal predecessors, (73), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-28 04:32:31,796 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:32:31,796 INFO L93 Difference]: Finished difference Result 1359 states and 1602 transitions. [2024-11-28 04:32:31,797 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 04:32:31,797 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 18.25) internal successors, (73), 4 states have internal predecessors, (73), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 75 [2024-11-28 04:32:31,798 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:32:31,801 INFO L225 Difference]: With dead ends: 1359 [2024-11-28 04:32:31,802 INFO L226 Difference]: Without dead ends: 1359 [2024-11-28 04:32:31,802 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 72 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 04:32:31,802 INFO L435 NwaCegarLoop]: 1177 mSDtfsCounter, 0 mSDsluCounter, 2349 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 3526 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 04:32:31,803 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 3526 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 04:32:31,805 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1359 states. [2024-11-28 04:32:31,822 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1359 to 1359. [2024-11-28 04:32:31,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1359 states, 884 states have (on average 1.759049773755656) internal successors, (1555), 1347 states have internal predecessors, (1555), 24 states have call successors, (24), 4 states have call predecessors, (24), 4 states have return successors, (23), 8 states have call predecessors, (23), 22 states have call successors, (23) [2024-11-28 04:32:31,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1359 states to 1359 states and 1602 transitions. [2024-11-28 04:32:31,827 INFO L78 Accepts]: Start accepts. Automaton has 1359 states and 1602 transitions. Word has length 75 [2024-11-28 04:32:31,827 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:32:31,827 INFO L471 AbstractCegarLoop]: Abstraction has 1359 states and 1602 transitions. [2024-11-28 04:32:31,827 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.25) internal successors, (73), 4 states have internal predecessors, (73), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-28 04:32:31,827 INFO L276 IsEmpty]: Start isEmpty. Operand 1359 states and 1602 transitions. [2024-11-28 04:32:31,828 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2024-11-28 04:32:31,828 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:32:31,828 INFO L218 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] [2024-11-28 04:32:31,844 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27005571-b26c-4ebb-85fe-687e4983ef0a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2024-11-28 04:32:32,029 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27005571-b26c-4ebb-85fe-687e4983ef0a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:32:32,029 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr80REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 631 more)] === [2024-11-28 04:32:32,029 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:32:32,029 INFO L85 PathProgramCache]: Analyzing trace with hash -19258566, now seen corresponding path program 1 times [2024-11-28 04:32:32,030 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 04:32:32,030 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1845288287] [2024-11-28 04:32:32,030 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:32:32,030 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:32:32,030 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27005571-b26c-4ebb-85fe-687e4983ef0a/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:32:32,031 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27005571-b26c-4ebb-85fe-687e4983ef0a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:32:32,033 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27005571-b26c-4ebb-85fe-687e4983ef0a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2024-11-28 04:32:32,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:32:32,330 INFO L256 TraceCheckSpWp]: Trace formula consists of 343 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-28 04:32:32,333 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:32:32,363 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:32:32,363 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:32:32,438 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:32:32,438 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 04:32:32,438 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1845288287] [2024-11-28 04:32:32,438 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1845288287] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:32:32,438 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-28 04:32:32,438 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2024-11-28 04:32:32,439 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1868742289] [2024-11-28 04:32:32,439 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-28 04:32:32,439 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-28 04:32:32,439 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 04:32:32,440 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-28 04:32:32,440 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2024-11-28 04:32:32,440 INFO L87 Difference]: Start difference. First operand 1359 states and 1602 transitions. Second operand has 8 states, 8 states have (on average 9.75) internal successors, (78), 8 states have internal predecessors, (78), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-28 04:32:32,701 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:32:32,702 INFO L93 Difference]: Finished difference Result 1371 states and 1619 transitions. [2024-11-28 04:32:32,702 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-28 04:32:32,702 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 9.75) internal successors, (78), 8 states have internal predecessors, (78), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 76 [2024-11-28 04:32:32,703 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:32:32,706 INFO L225 Difference]: With dead ends: 1371 [2024-11-28 04:32:32,706 INFO L226 Difference]: Without dead ends: 1371 [2024-11-28 04:32:32,707 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 153 GetRequests, 144 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=44, Invalid=66, Unknown=0, NotChecked=0, Total=110 [2024-11-28 04:32:32,707 INFO L435 NwaCegarLoop]: 1177 mSDtfsCounter, 7 mSDsluCounter, 5866 mSDsCounter, 0 mSdLazyCounter, 60 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 7043 SdHoareTripleChecker+Invalid, 67 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 60 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-28 04:32:32,707 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 7043 Invalid, 67 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 60 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-28 04:32:32,710 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1371 states. [2024-11-28 04:32:32,726 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1371 to 1369. [2024-11-28 04:32:32,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1369 states, 893 states have (on average 1.7581187010078387) internal successors, (1570), 1356 states have internal predecessors, (1570), 24 states have call successors, (24), 5 states have call predecessors, (24), 5 states have return successors, (23), 8 states have call predecessors, (23), 22 states have call successors, (23) [2024-11-28 04:32:32,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1369 states to 1369 states and 1617 transitions. [2024-11-28 04:32:32,731 INFO L78 Accepts]: Start accepts. Automaton has 1369 states and 1617 transitions. Word has length 76 [2024-11-28 04:32:32,731 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:32:32,731 INFO L471 AbstractCegarLoop]: Abstraction has 1369 states and 1617 transitions. [2024-11-28 04:32:32,731 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.75) internal successors, (78), 8 states have internal predecessors, (78), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-28 04:32:32,731 INFO L276 IsEmpty]: Start isEmpty. Operand 1369 states and 1617 transitions. [2024-11-28 04:32:32,732 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2024-11-28 04:32:32,732 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:32:32,732 INFO L218 NwaCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:32:32,747 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27005571-b26c-4ebb-85fe-687e4983ef0a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Ended with exit code 0 [2024-11-28 04:32:32,933 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27005571-b26c-4ebb-85fe-687e4983ef0a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:32:32,933 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr80REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 631 more)] === [2024-11-28 04:32:32,933 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:32:32,933 INFO L85 PathProgramCache]: Analyzing trace with hash -1619922938, now seen corresponding path program 2 times [2024-11-28 04:32:32,934 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 04:32:32,934 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [464848269] [2024-11-28 04:32:32,934 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 04:32:32,934 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:32:32,934 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27005571-b26c-4ebb-85fe-687e4983ef0a/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:32:32,936 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27005571-b26c-4ebb-85fe-687e4983ef0a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:32:32,937 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27005571-b26c-4ebb-85fe-687e4983ef0a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2024-11-28 04:33:11,743 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 04:33:11,744 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:33:11,761 INFO L256 TraceCheckSpWp]: Trace formula consists of 376 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-11-28 04:33:11,765 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:33:11,934 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2024-11-28 04:33:11,934 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 [2024-11-28 04:33:11,962 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 [2024-11-28 04:33:12,192 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-28 04:33:12,193 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 [2024-11-28 04:33:12,249 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 [2024-11-28 04:33:12,272 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-28 04:33:12,272 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:33:12,385 INFO L349 Elim1Store]: treesize reduction 7, result has 63.2 percent of original size [2024-11-28 04:33:12,386 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 [2024-11-28 04:33:12,467 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 04:33:12,467 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [464848269] [2024-11-28 04:33:12,468 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [464848269] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:33:12,468 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1078703103] [2024-11-28 04:33:12,468 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 04:33:12,468 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-28 04:33:12,468 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27005571-b26c-4ebb-85fe-687e4983ef0a/bin/uautomizer-verify-aQ6SnzHsRB/cvc4 [2024-11-28 04:33:12,481 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27005571-b26c-4ebb-85fe-687e4983ef0a/bin/uautomizer-verify-aQ6SnzHsRB/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-28 04:33:12,483 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27005571-b26c-4ebb-85fe-687e4983ef0a/bin/uautomizer-verify-aQ6SnzHsRB/cvc4 --incremental --print-success --lang smt (22)] Waiting until timeout for monitored process [2024-11-28 04:33:14,277 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 04:33:14,277 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:33:14,317 INFO L256 TraceCheckSpWp]: Trace formula consists of 376 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-28 04:33:14,319 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:33:14,600 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:33:14,600 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:33:14,991 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:33:14,992 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1078703103] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:33:14,992 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 04:33:14,992 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 8, 8] total 23 [2024-11-28 04:33:14,992 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1472976380] [2024-11-28 04:33:14,992 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 04:33:14,992 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-11-28 04:33:14,992 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 04:33:14,993 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-11-28 04:33:14,993 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=89, Invalid=504, Unknown=7, NotChecked=0, Total=600 [2024-11-28 04:33:14,993 INFO L87 Difference]: Start difference. First operand 1369 states and 1617 transitions. Second operand has 23 states, 22 states have (on average 6.863636363636363) internal successors, (151), 22 states have internal predecessors, (151), 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) [2024-11-28 04:33:31,183 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:33:31,184 INFO L93 Difference]: Finished difference Result 1393 states and 1648 transitions. [2024-11-28 04:33:31,184 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2024-11-28 04:33:31,184 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 22 states have (on average 6.863636363636363) internal successors, (151), 22 states have internal predecessors, (151), 2 states have call successors, (2), 2 states have call predecessors, (2), 3 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 79 [2024-11-28 04:33:31,185 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:33:31,189 INFO L225 Difference]: With dead ends: 1393 [2024-11-28 04:33:31,189 INFO L226 Difference]: Without dead ends: 1389 [2024-11-28 04:33:31,189 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 264 GetRequests, 215 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 459 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=410, Invalid=2132, Unknown=8, NotChecked=0, Total=2550 [2024-11-28 04:33:31,191 INFO L435 NwaCegarLoop]: 719 mSDtfsCounter, 876 mSDsluCounter, 8124 mSDsCounter, 0 mSdLazyCounter, 7152 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 897 SdHoareTripleChecker+Valid, 8843 SdHoareTripleChecker+Invalid, 7181 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 7152 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14.8s IncrementalHoareTripleChecker+Time [2024-11-28 04:33:31,192 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [897 Valid, 8843 Invalid, 7181 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [29 Valid, 7152 Invalid, 0 Unknown, 0 Unchecked, 14.8s Time] [2024-11-28 04:33:31,197 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1389 states. [2024-11-28 04:33:31,230 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1389 to 1377. [2024-11-28 04:33:31,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1377 states, 902 states have (on average 1.752771618625277) internal successors, (1581), 1364 states have internal predecessors, (1581), 24 states have call successors, (24), 5 states have call predecessors, (24), 5 states have return successors, (23), 8 states have call predecessors, (23), 22 states have call successors, (23) [2024-11-28 04:33:31,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1377 states to 1377 states and 1628 transitions. [2024-11-28 04:33:31,235 INFO L78 Accepts]: Start accepts. Automaton has 1377 states and 1628 transitions. Word has length 79 [2024-11-28 04:33:31,235 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:33:31,235 INFO L471 AbstractCegarLoop]: Abstraction has 1377 states and 1628 transitions. [2024-11-28 04:33:31,236 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 22 states have (on average 6.863636363636363) internal successors, (151), 22 states have internal predecessors, (151), 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) [2024-11-28 04:33:31,236 INFO L276 IsEmpty]: Start isEmpty. Operand 1377 states and 1628 transitions. [2024-11-28 04:33:31,237 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2024-11-28 04:33:31,237 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:33:31,237 INFO L218 NwaCegarLoop]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:33:31,281 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27005571-b26c-4ebb-85fe-687e4983ef0a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Ended with exit code 0 [2024-11-28 04:33:31,448 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27005571-b26c-4ebb-85fe-687e4983ef0a/bin/uautomizer-verify-aQ6SnzHsRB/cvc4 --incremental --print-success --lang smt (22)] Ended with exit code 0 [2024-11-28 04:33:31,638 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27005571-b26c-4ebb-85fe-687e4983ef0a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27005571-b26c-4ebb-85fe-687e4983ef0a/bin/uautomizer-verify-aQ6SnzHsRB/cvc4 --incremental --print-success --lang smt [2024-11-28 04:33:31,638 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr81REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 631 more)] === [2024-11-28 04:33:31,638 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:33:31,639 INFO L85 PathProgramCache]: Analyzing trace with hash 848913287, now seen corresponding path program 1 times [2024-11-28 04:33:31,639 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 04:33:31,639 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [639221967] [2024-11-28 04:33:31,639 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:33:31,639 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:33:31,639 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27005571-b26c-4ebb-85fe-687e4983ef0a/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:33:31,641 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27005571-b26c-4ebb-85fe-687e4983ef0a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:33:31,643 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27005571-b26c-4ebb-85fe-687e4983ef0a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2024-11-28 04:33:32,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:33:32,068 INFO L256 TraceCheckSpWp]: Trace formula consists of 442 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-28 04:33:32,071 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:33:32,278 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:33:32,279 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:33:33,106 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:33:33,106 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 04:33:33,106 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [639221967] [2024-11-28 04:33:33,106 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [639221967] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:33:33,106 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-28 04:33:33,106 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 26 [2024-11-28 04:33:33,107 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2016307445] [2024-11-28 04:33:33,107 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-28 04:33:33,107 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2024-11-28 04:33:33,107 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 04:33:33,108 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2024-11-28 04:33:33,108 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=193, Invalid=457, Unknown=0, NotChecked=0, Total=650 [2024-11-28 04:33:33,108 INFO L87 Difference]: Start difference. First operand 1377 states and 1628 transitions. Second operand has 26 states, 26 states have (on average 3.6923076923076925) internal successors, (96), 26 states have internal predecessors, (96), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-28 04:33:35,955 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:33:35,955 INFO L93 Difference]: Finished difference Result 1401 states and 1667 transitions. [2024-11-28 04:33:35,956 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2024-11-28 04:33:35,956 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 3.6923076923076925) internal successors, (96), 26 states have internal predecessors, (96), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 85 [2024-11-28 04:33:35,956 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:33:35,959 INFO L225 Difference]: With dead ends: 1401 [2024-11-28 04:33:35,959 INFO L226 Difference]: Without dead ends: 1395 [2024-11-28 04:33:35,960 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 189 GetRequests, 144 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 100 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=728, Invalid=1434, Unknown=0, NotChecked=0, Total=2162 [2024-11-28 04:33:35,961 INFO L435 NwaCegarLoop]: 1177 mSDtfsCounter, 19 mSDsluCounter, 14087 mSDsCounter, 0 mSdLazyCounter, 590 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 15264 SdHoareTripleChecker+Invalid, 605 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 590 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2024-11-28 04:33:35,961 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 15264 Invalid, 605 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 590 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2024-11-28 04:33:35,964 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1395 states. [2024-11-28 04:33:35,982 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1395 to 1395. [2024-11-28 04:33:35,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1395 states, 920 states have (on average 1.7434782608695651) internal successors, (1604), 1382 states have internal predecessors, (1604), 24 states have call successors, (24), 5 states have call predecessors, (24), 5 states have return successors, (23), 8 states have call predecessors, (23), 22 states have call successors, (23) [2024-11-28 04:33:35,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1395 states to 1395 states and 1651 transitions. [2024-11-28 04:33:35,987 INFO L78 Accepts]: Start accepts. Automaton has 1395 states and 1651 transitions. Word has length 85 [2024-11-28 04:33:35,987 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:33:35,987 INFO L471 AbstractCegarLoop]: Abstraction has 1395 states and 1651 transitions. [2024-11-28 04:33:35,988 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 3.6923076923076925) internal successors, (96), 26 states have internal predecessors, (96), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-28 04:33:35,988 INFO L276 IsEmpty]: Start isEmpty. Operand 1395 states and 1651 transitions. [2024-11-28 04:33:35,989 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2024-11-28 04:33:35,989 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:33:35,989 INFO L218 NwaCegarLoop]: trace histogram [22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:33:36,009 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27005571-b26c-4ebb-85fe-687e4983ef0a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2024-11-28 04:33:36,190 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27005571-b26c-4ebb-85fe-687e4983ef0a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:33:36,190 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr81REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 631 more)] === [2024-11-28 04:33:36,191 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:33:36,191 INFO L85 PathProgramCache]: Analyzing trace with hash -1705874809, now seen corresponding path program 2 times [2024-11-28 04:33:36,191 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 04:33:36,192 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1037842729] [2024-11-28 04:33:36,192 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 04:33:36,192 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:33:36,192 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27005571-b26c-4ebb-85fe-687e4983ef0a/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:33:36,194 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27005571-b26c-4ebb-85fe-687e4983ef0a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:33:36,196 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27005571-b26c-4ebb-85fe-687e4983ef0a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2024-11-28 04:33:56,110 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 04:33:56,110 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:33:56,131 INFO L256 TraceCheckSpWp]: Trace formula consists of 574 conjuncts, 64 conjuncts are in the unsatisfiable core [2024-11-28 04:33:56,140 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:33:56,289 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 [2024-11-28 04:33:56,312 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2024-11-28 04:33:56,312 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2024-11-28 04:33:56,357 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 [2024-11-28 04:33:56,367 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 [2024-11-28 04:33:56,528 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 [2024-11-28 04:33:56,537 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 [2024-11-28 04:33:57,221 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-28 04:33:57,221 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 [2024-11-28 04:33:57,240 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 13 [2024-11-28 04:33:57,301 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 [2024-11-28 04:33:57,313 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 [2024-11-28 04:33:57,342 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 231 trivial. 0 not checked. [2024-11-28 04:33:57,342 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:33:58,057 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (and (forall ((v_ArrVal_1860 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (select (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_#t~mem36#1.base| v_ArrVal_1860) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (bvule (bvadd (_ bv16 32) .cse0) (bvadd (_ bv20 32) .cse0)))) (forall ((v_ArrVal_1859 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_1860 (Array (_ BitVec 32) (_ BitVec 32)))) (bvule (bvadd (_ bv20 32) (select (select (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_#t~mem36#1.base| v_ArrVal_1860) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)) (select |c_#length| (select (select (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem36#1.base| v_ArrVal_1859) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))))) is different from false [2024-11-28 04:33:58,062 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 04:33:58,062 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1037842729] [2024-11-28 04:33:58,063 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1037842729] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:33:58,063 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1480119384] [2024-11-28 04:33:58,063 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 04:33:58,063 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-28 04:33:58,063 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27005571-b26c-4ebb-85fe-687e4983ef0a/bin/uautomizer-verify-aQ6SnzHsRB/cvc4 [2024-11-28 04:33:58,065 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27005571-b26c-4ebb-85fe-687e4983ef0a/bin/uautomizer-verify-aQ6SnzHsRB/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-28 04:33:58,067 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27005571-b26c-4ebb-85fe-687e4983ef0a/bin/uautomizer-verify-aQ6SnzHsRB/cvc4 --incremental --print-success --lang smt (25)] Waiting until timeout for monitored process [2024-11-28 04:34:00,078 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 04:34:00,078 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:34:00,122 INFO L256 TraceCheckSpWp]: Trace formula consists of 574 conjuncts, 25 conjuncts are in the unsatisfiable core [2024-11-28 04:34:00,125 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:34:01,322 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:34:01,322 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:34:04,326 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:34:04,327 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1480119384] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:34:04,327 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 04:34:04,327 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 26, 26] total 57 [2024-11-28 04:34:04,327 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1758509591] [2024-11-28 04:34:04,328 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 04:34:04,328 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 57 states [2024-11-28 04:34:04,329 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 04:34:04,330 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 57 interpolants. [2024-11-28 04:34:04,331 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=697, Invalid=2728, Unknown=1, NotChecked=114, Total=3540 [2024-11-28 04:34:04,331 INFO L87 Difference]: Start difference. First operand 1395 states and 1651 transitions. Second operand has 57 states, 56 states have (on average 3.3392857142857144) internal successors, (187), 57 states have internal predecessors, (187), 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) [2024-11-28 04:34:52,421 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:34:52,421 INFO L93 Difference]: Finished difference Result 1446 states and 1732 transitions. [2024-11-28 04:34:52,422 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 81 states. [2024-11-28 04:34:52,422 INFO L78 Accepts]: Start accepts. Automaton has has 57 states, 56 states have (on average 3.3392857142857144) internal successors, (187), 57 states have internal predecessors, (187), 2 states have call successors, (2), 2 states have call predecessors, (2), 3 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 97 [2024-11-28 04:34:52,422 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:34:52,426 INFO L225 Difference]: With dead ends: 1446 [2024-11-28 04:34:52,426 INFO L226 Difference]: Without dead ends: 1438 [2024-11-28 04:34:52,445 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 368 GetRequests, 235 SyntacticMatches, 1 SemanticMatches, 132 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 3014 ImplicationChecksByTransitivity, 13.1s TimeCoverageRelationStatistics Valid=3100, Invalid=14459, Unknown=1, NotChecked=262, Total=17822 [2024-11-28 04:34:52,448 INFO L435 NwaCegarLoop]: 789 mSDtfsCounter, 853 mSDsluCounter, 22655 mSDsCounter, 0 mSdLazyCounter, 17205 mSolverCounterSat, 76 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 34.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 858 SdHoareTripleChecker+Valid, 23444 SdHoareTripleChecker+Invalid, 17281 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 76 IncrementalHoareTripleChecker+Valid, 17205 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 38.4s IncrementalHoareTripleChecker+Time [2024-11-28 04:34:52,448 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [858 Valid, 23444 Invalid, 17281 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [76 Valid, 17205 Invalid, 0 Unknown, 0 Unchecked, 38.4s Time] [2024-11-28 04:34:52,450 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1438 states. [2024-11-28 04:34:52,466 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1438 to 1428. [2024-11-28 04:34:52,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1428 states, 954 states have (on average 1.7243186582809225) internal successors, (1645), 1415 states have internal predecessors, (1645), 24 states have call successors, (24), 5 states have call predecessors, (24), 5 states have return successors, (23), 8 states have call predecessors, (23), 22 states have call successors, (23) [2024-11-28 04:34:52,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1428 states to 1428 states and 1692 transitions. [2024-11-28 04:34:52,470 INFO L78 Accepts]: Start accepts. Automaton has 1428 states and 1692 transitions. Word has length 97 [2024-11-28 04:34:52,470 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:34:52,471 INFO L471 AbstractCegarLoop]: Abstraction has 1428 states and 1692 transitions. [2024-11-28 04:34:52,471 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 57 states, 56 states have (on average 3.3392857142857144) internal successors, (187), 57 states have internal predecessors, (187), 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) [2024-11-28 04:34:52,471 INFO L276 IsEmpty]: Start isEmpty. Operand 1428 states and 1692 transitions. [2024-11-28 04:34:52,472 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2024-11-28 04:34:52,472 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:34:52,472 INFO L218 NwaCegarLoop]: trace histogram [44, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:34:52,507 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27005571-b26c-4ebb-85fe-687e4983ef0a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Ended with exit code 0 [2024-11-28 04:34:52,680 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27005571-b26c-4ebb-85fe-687e4983ef0a/bin/uautomizer-verify-aQ6SnzHsRB/cvc4 --incremental --print-success --lang smt (25)] Ended with exit code 0 [2024-11-28 04:34:52,873 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27005571-b26c-4ebb-85fe-687e4983ef0a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27005571-b26c-4ebb-85fe-687e4983ef0a/bin/uautomizer-verify-aQ6SnzHsRB/cvc4 --incremental --print-success --lang smt [2024-11-28 04:34:52,873 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr84REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 631 more)] === [2024-11-28 04:34:52,874 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:34:52,874 INFO L85 PathProgramCache]: Analyzing trace with hash -680842910, now seen corresponding path program 1 times [2024-11-28 04:34:52,875 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 04:34:52,875 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1751783453] [2024-11-28 04:34:52,875 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:34:52,875 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:34:52,875 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27005571-b26c-4ebb-85fe-687e4983ef0a/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:34:52,877 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27005571-b26c-4ebb-85fe-687e4983ef0a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:34:52,880 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27005571-b26c-4ebb-85fe-687e4983ef0a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2024-11-28 04:34:53,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:34:53,427 INFO L256 TraceCheckSpWp]: Trace formula consists of 836 conjuncts, 58 conjuncts are in the unsatisfiable core [2024-11-28 04:34:53,437 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:34:53,621 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2024-11-28 04:34:53,622 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 [2024-11-28 04:34:53,649 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 [2024-11-28 04:34:54,374 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-28 04:34:54,374 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 [2024-11-28 04:34:54,482 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-28 04:34:54,482 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 [2024-11-28 04:34:54,500 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 [2024-11-28 04:34:54,525 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 946 trivial. 0 not checked. [2024-11-28 04:34:54,525 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:34:54,571 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_2519 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (_ bv1 1) (select |c_#valid| (select (select (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem38#1.base| v_ArrVal_2519) |c_ULTIMATE.start_main_~user~0#1.base|) (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|)))))) is different from false [2024-11-28 04:34:54,580 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_2519 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (_ bv1 1) (select |c_#valid| (let ((.cse0 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (store |c_#memory_$Pointer$#1.base| (select (select |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse0) v_ArrVal_2519) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0)))))) is different from false [2024-11-28 04:34:55,046 INFO L349 Elim1Store]: treesize reduction 7, result has 77.4 percent of original size [2024-11-28 04:34:55,046 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 [2024-11-28 04:34:55,058 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_2519 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_2565 (Array (_ BitVec 32) (_ BitVec 32)))) (= (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (let ((.cse0 (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem36#1.base| v_ArrVal_2565))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_2519)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)) |c_ULTIMATE.start_main_#t~mem36#1.base|)) is different from false [2024-11-28 04:34:55,060 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 04:34:55,060 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1751783453] [2024-11-28 04:34:55,060 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1751783453] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:34:55,060 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [436693899] [2024-11-28 04:34:55,061 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:34:55,061 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-28 04:34:55,061 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27005571-b26c-4ebb-85fe-687e4983ef0a/bin/uautomizer-verify-aQ6SnzHsRB/cvc4 [2024-11-28 04:34:55,063 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27005571-b26c-4ebb-85fe-687e4983ef0a/bin/uautomizer-verify-aQ6SnzHsRB/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-28 04:34:55,065 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27005571-b26c-4ebb-85fe-687e4983ef0a/bin/uautomizer-verify-aQ6SnzHsRB/cvc4 --incremental --print-success --lang smt (27)] Waiting until timeout for monitored process [2024-11-28 04:34:57,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:34:57,340 INFO L256 TraceCheckSpWp]: Trace formula consists of 836 conjuncts, 63 conjuncts are in the unsatisfiable core [2024-11-28 04:34:57,349 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:34:57,355 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2024-11-28 04:34:57,506 INFO L349 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2024-11-28 04:34:57,507 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 [2024-11-28 04:34:57,586 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 [2024-11-28 04:34:57,751 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 [2024-11-28 04:34:59,093 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-28 04:34:59,094 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 [2024-11-28 04:34:59,314 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-28 04:34:59,314 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 [2024-11-28 04:34:59,350 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 15 [2024-11-28 04:34:59,427 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 946 trivial. 0 not checked. [2024-11-28 04:34:59,427 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:34:59,449 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_2989 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (_ bv1 1) (select |c_#valid| (select (select (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem38#1.base| v_ArrVal_2989) |c_ULTIMATE.start_main_~user~0#1.base|) (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|)))))) is different from false [2024-11-28 04:34:59,461 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_2989 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (_ bv1 1) (select |c_#valid| (let ((.cse0 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (store |c_#memory_$Pointer$#1.base| (select (select |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse0) v_ArrVal_2989) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0)))))) is different from false [2024-11-28 04:34:59,930 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_3035 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_2989 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (_ bv1 1) (select |c_#valid| (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (let ((.cse0 (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem36#1.base| v_ArrVal_3035))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_2989)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))))) is different from false [2024-11-28 04:34:59,932 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [436693899] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:34:59,933 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-28 04:34:59,933 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 9] total 18 [2024-11-28 04:34:59,933 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1875138109] [2024-11-28 04:34:59,933 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-28 04:34:59,933 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-11-28 04:34:59,933 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 04:34:59,934 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-11-28 04:34:59,934 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=320, Unknown=6, NotChecked=246, Total=650 [2024-11-28 04:34:59,934 INFO L87 Difference]: Start difference. First operand 1428 states and 1692 transitions. Second operand has 19 states, 16 states have (on average 6.25) internal successors, (100), 18 states have internal predecessors, (100), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-28 04:35:14,183 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:35:14,183 INFO L93 Difference]: Finished difference Result 1437 states and 1701 transitions. [2024-11-28 04:35:14,183 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-28 04:35:14,183 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 16 states have (on average 6.25) internal successors, (100), 18 states have internal predecessors, (100), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 122 [2024-11-28 04:35:14,184 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:35:14,187 INFO L225 Difference]: With dead ends: 1437 [2024-11-28 04:35:14,187 INFO L226 Difference]: Without dead ends: 1437 [2024-11-28 04:35:14,188 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 259 GetRequests, 231 SyntacticMatches, 1 SemanticMatches, 27 ConstructedPredicates, 6 IntricatePredicates, 0 DeprecatedPredicates, 107 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=99, Invalid=425, Unknown=6, NotChecked=282, Total=812 [2024-11-28 04:35:14,188 INFO L435 NwaCegarLoop]: 718 mSDtfsCounter, 853 mSDsluCounter, 6909 mSDsCounter, 0 mSdLazyCounter, 6875 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 873 SdHoareTripleChecker+Valid, 7627 SdHoareTripleChecker+Invalid, 6887 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 6875 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14.0s IncrementalHoareTripleChecker+Time [2024-11-28 04:35:14,188 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [873 Valid, 7627 Invalid, 6887 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [12 Valid, 6875 Invalid, 0 Unknown, 0 Unchecked, 14.0s Time] [2024-11-28 04:35:14,190 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1437 states. [2024-11-28 04:35:14,204 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1437 to 1427. [2024-11-28 04:35:14,206 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1427 states, 954 states have (on average 1.7232704402515724) internal successors, (1644), 1414 states have internal predecessors, (1644), 24 states have call successors, (24), 5 states have call predecessors, (24), 5 states have return successors, (23), 8 states have call predecessors, (23), 22 states have call successors, (23) [2024-11-28 04:35:14,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1427 states to 1427 states and 1691 transitions. [2024-11-28 04:35:14,208 INFO L78 Accepts]: Start accepts. Automaton has 1427 states and 1691 transitions. Word has length 122 [2024-11-28 04:35:14,209 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:35:14,209 INFO L471 AbstractCegarLoop]: Abstraction has 1427 states and 1691 transitions. [2024-11-28 04:35:14,209 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 16 states have (on average 6.25) internal successors, (100), 18 states have internal predecessors, (100), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-28 04:35:14,209 INFO L276 IsEmpty]: Start isEmpty. Operand 1427 states and 1691 transitions. [2024-11-28 04:35:14,210 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2024-11-28 04:35:14,210 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:35:14,210 INFO L218 NwaCegarLoop]: trace histogram [44, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:35:14,226 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27005571-b26c-4ebb-85fe-687e4983ef0a/bin/uautomizer-verify-aQ6SnzHsRB/cvc4 --incremental --print-success --lang smt (27)] Ended with exit code 0 [2024-11-28 04:35:14,433 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27005571-b26c-4ebb-85fe-687e4983ef0a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Ended with exit code 0 [2024-11-28 04:35:14,611 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27005571-b26c-4ebb-85fe-687e4983ef0a/bin/uautomizer-verify-aQ6SnzHsRB/cvc4 --incremental --print-success --lang smt,26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27005571-b26c-4ebb-85fe-687e4983ef0a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:35:14,612 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr85REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 631 more)] === [2024-11-28 04:35:14,612 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:35:14,613 INFO L85 PathProgramCache]: Analyzing trace with hash -680842909, now seen corresponding path program 1 times [2024-11-28 04:35:14,613 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 04:35:14,613 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1248670664] [2024-11-28 04:35:14,614 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:35:14,614 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:35:14,614 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27005571-b26c-4ebb-85fe-687e4983ef0a/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:35:14,616 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27005571-b26c-4ebb-85fe-687e4983ef0a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:35:14,619 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27005571-b26c-4ebb-85fe-687e4983ef0a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2024-11-28 04:35:15,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:35:15,320 INFO L256 TraceCheckSpWp]: Trace formula consists of 836 conjuncts, 112 conjuncts are in the unsatisfiable core [2024-11-28 04:35:15,332 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:35:15,336 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2024-11-28 04:35:15,486 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2024-11-28 04:35:15,486 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 [2024-11-28 04:35:15,493 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 [2024-11-28 04:35:15,525 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 [2024-11-28 04:35:15,534 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 [2024-11-28 04:35:15,654 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 [2024-11-28 04:35:15,660 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 [2024-11-28 04:35:16,661 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-28 04:35:16,662 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 [2024-11-28 04:35:16,681 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 [2024-11-28 04:35:16,842 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-28 04:35:16,842 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 [2024-11-28 04:35:16,853 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 [2024-11-28 04:35:16,885 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 [2024-11-28 04:35:16,893 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 [2024-11-28 04:35:16,926 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 946 trivial. 0 not checked. [2024-11-28 04:35:16,926 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:35:17,108 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (and (forall ((v_ArrVal_3505 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (select (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_#t~mem38#1.base| v_ArrVal_3505) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (bvule (bvadd (_ bv4 32) .cse0) (bvadd (_ bv8 32) .cse0)))) (forall ((v_ArrVal_3505 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_3506 (Array (_ BitVec 32) (_ BitVec 32)))) (bvule (bvadd (_ bv8 32) (select (select (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_#t~mem38#1.base| v_ArrVal_3505) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)) (select |c_#length| (select (select (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem38#1.base| v_ArrVal_3506) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))))) is different from false [2024-11-28 04:35:17,143 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse2 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (let ((.cse1 (select (select |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (and (forall ((v_ArrVal_3505 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (select (store |c_#memory_$Pointer$#1.offset| .cse1 v_ArrVal_3505) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (bvule (bvadd (_ bv4 32) .cse0) (bvadd (_ bv8 32) .cse0)))) (forall ((v_ArrVal_3505 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_3506 (Array (_ BitVec 32) (_ BitVec 32)))) (bvule (bvadd (_ bv8 32) (select (select (store |c_#memory_$Pointer$#1.offset| .cse1 v_ArrVal_3505) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2)) (select |c_#length| (select (select (store |c_#memory_$Pointer$#1.base| .cse1 v_ArrVal_3506) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))))))) is different from false [2024-11-28 04:35:18,800 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (and (forall ((v_ArrVal_3505 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_3598 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_3597 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (select (store (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_#t~mem36#1.base| v_ArrVal_3598) (select (select (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem36#1.base| v_ArrVal_3597) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_3505) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (bvule (bvadd (_ bv4 32) .cse0) (bvadd (_ bv8 32) .cse0)))) (forall ((v_ArrVal_3505 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_3506 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_3598 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_3597 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse3 (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem36#1.base| v_ArrVal_3597))) (let ((.cse2 (select (select .cse3 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (bvule (bvadd (_ bv8 32) (select (select (store (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_#t~mem36#1.base| v_ArrVal_3598) .cse2 v_ArrVal_3505) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)) (select |c_#length| (select (select (store .cse3 .cse2 v_ArrVal_3506) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))))))) is different from false [2024-11-28 04:35:18,808 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 04:35:18,808 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1248670664] [2024-11-28 04:35:18,808 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1248670664] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:35:18,808 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1004329923] [2024-11-28 04:35:18,808 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:35:18,809 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-28 04:35:18,809 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27005571-b26c-4ebb-85fe-687e4983ef0a/bin/uautomizer-verify-aQ6SnzHsRB/cvc4 [2024-11-28 04:35:18,811 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27005571-b26c-4ebb-85fe-687e4983ef0a/bin/uautomizer-verify-aQ6SnzHsRB/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-28 04:35:18,813 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27005571-b26c-4ebb-85fe-687e4983ef0a/bin/uautomizer-verify-aQ6SnzHsRB/cvc4 --incremental --print-success --lang smt (29)] Waiting until timeout for monitored process [2024-11-28 04:36:39,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:36:39,831 INFO L256 TraceCheckSpWp]: Trace formula consists of 836 conjuncts, 113 conjuncts are in the unsatisfiable core [2024-11-28 04:36:39,845 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:36:39,848 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2024-11-28 04:36:39,989 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 [2024-11-28 04:36:40,004 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2024-11-28 04:36:40,004 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 [2024-11-28 04:36:40,018 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 [2024-11-28 04:36:40,024 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 [2024-11-28 04:36:40,114 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 [2024-11-28 04:36:40,121 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 [2024-11-28 04:36:41,128 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-28 04:36:41,129 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 [2024-11-28 04:36:41,144 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 [2024-11-28 04:36:41,251 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-28 04:36:41,251 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 [2024-11-28 04:36:41,267 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 [2024-11-28 04:36:41,301 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 [2024-11-28 04:36:41,313 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 [2024-11-28 04:36:41,318 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 946 trivial. 0 not checked. [2024-11-28 04:36:41,318 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:36:41,402 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse0 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (and (forall ((v_ArrVal_4069 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_4068 (Array (_ BitVec 32) (_ BitVec 32)))) (bvule (bvadd (select (select (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_#t~mem38#1.base| v_ArrVal_4068) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0) (_ bv8 32)) (select |c_#length| (select (select (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem38#1.base| v_ArrVal_4069) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0)))) (forall ((v_ArrVal_4068 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse1 (select (select (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_#t~mem38#1.base| v_ArrVal_4068) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0))) (bvule (bvadd .cse1 (_ bv4 32)) (bvadd .cse1 (_ bv8 32))))))) is different from false [2024-11-28 04:36:43,309 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (and (forall ((v_ArrVal_4160 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_4161 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_4068 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (select (store (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_#t~mem36#1.base| v_ArrVal_4160) (select (select (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem36#1.base| v_ArrVal_4161) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_4068) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (bvule (bvadd (_ bv4 32) .cse0) (bvadd (_ bv8 32) .cse0)))) (forall ((v_ArrVal_4160 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_4161 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_4069 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_4068 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse3 (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem36#1.base| v_ArrVal_4161))) (let ((.cse2 (select (select .cse3 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (bvule (bvadd (_ bv8 32) (select (select (store (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_#t~mem36#1.base| v_ArrVal_4160) .cse2 v_ArrVal_4068) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)) (select |c_#length| (select (select (store .cse3 .cse2 v_ArrVal_4069) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))))))) is different from false [2024-11-28 04:36:43,316 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1004329923] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:36:43,316 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-28 04:36:43,316 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 9 [2024-11-28 04:36:43,316 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1032046642] [2024-11-28 04:36:43,316 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-28 04:36:43,317 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-28 04:36:43,317 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 04:36:43,317 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-28 04:36:43,317 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=124, Unknown=9, NotChecked=130, Total=306 [2024-11-28 04:36:43,317 INFO L87 Difference]: Start difference. First operand 1427 states and 1691 transitions. Second operand has 10 states, 8 states have (on average 9.75) internal successors, (78), 10 states have internal predecessors, (78), 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) [2024-11-28 04:36:52,599 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:36:52,600 INFO L93 Difference]: Finished difference Result 1434 states and 1698 transitions. [2024-11-28 04:36:52,600 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-28 04:36:52,600 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 8 states have (on average 9.75) internal successors, (78), 10 states have internal predecessors, (78), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 122 [2024-11-28 04:36:52,601 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:36:52,603 INFO L225 Difference]: With dead ends: 1434 [2024-11-28 04:36:52,603 INFO L226 Difference]: Without dead ends: 1434 [2024-11-28 04:36:52,603 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 261 GetRequests, 237 SyntacticMatches, 3 SemanticMatches, 21 ConstructedPredicates, 5 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=78, Invalid=239, Unknown=9, NotChecked=180, Total=506 [2024-11-28 04:36:52,603 INFO L435 NwaCegarLoop]: 789 mSDtfsCounter, 801 mSDsluCounter, 2099 mSDsCounter, 0 mSdLazyCounter, 3376 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 805 SdHoareTripleChecker+Valid, 2888 SdHoareTripleChecker+Invalid, 3383 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 3376 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.0s IncrementalHoareTripleChecker+Time [2024-11-28 04:36:52,604 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [805 Valid, 2888 Invalid, 3383 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 3376 Invalid, 0 Unknown, 0 Unchecked, 9.0s Time] [2024-11-28 04:36:52,605 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1434 states. [2024-11-28 04:36:52,619 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1434 to 1426. [2024-11-28 04:36:52,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1426 states, 954 states have (on average 1.7222222222222223) internal successors, (1643), 1413 states have internal predecessors, (1643), 24 states have call successors, (24), 5 states have call predecessors, (24), 5 states have return successors, (23), 8 states have call predecessors, (23), 22 states have call successors, (23) [2024-11-28 04:36:52,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1426 states to 1426 states and 1690 transitions. [2024-11-28 04:36:52,623 INFO L78 Accepts]: Start accepts. Automaton has 1426 states and 1690 transitions. Word has length 122 [2024-11-28 04:36:52,623 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:36:52,624 INFO L471 AbstractCegarLoop]: Abstraction has 1426 states and 1690 transitions. [2024-11-28 04:36:52,624 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 8 states have (on average 9.75) internal successors, (78), 10 states have internal predecessors, (78), 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) [2024-11-28 04:36:52,624 INFO L276 IsEmpty]: Start isEmpty. Operand 1426 states and 1690 transitions. [2024-11-28 04:36:52,625 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2024-11-28 04:36:52,625 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:36:52,625 INFO L218 NwaCegarLoop]: trace histogram [44, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:36:52,647 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27005571-b26c-4ebb-85fe-687e4983ef0a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Forceful destruction successful, exit code 0 [2024-11-28 04:36:52,866 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27005571-b26c-4ebb-85fe-687e4983ef0a/bin/uautomizer-verify-aQ6SnzHsRB/cvc4 --incremental --print-success --lang smt (29)] Ended with exit code 0 [2024-11-28 04:36:53,026 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27005571-b26c-4ebb-85fe-687e4983ef0a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,29 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27005571-b26c-4ebb-85fe-687e4983ef0a/bin/uautomizer-verify-aQ6SnzHsRB/cvc4 --incremental --print-success --lang smt [2024-11-28 04:36:53,026 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr89REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 631 more)] === [2024-11-28 04:36:53,026 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:36:53,026 INFO L85 PathProgramCache]: Analyzing trace with hash 2139832238, now seen corresponding path program 1 times [2024-11-28 04:36:53,027 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 04:36:53,027 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1053054626] [2024-11-28 04:36:53,027 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:36:53,027 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:36:53,027 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27005571-b26c-4ebb-85fe-687e4983ef0a/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:36:53,029 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27005571-b26c-4ebb-85fe-687e4983ef0a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:36:53,030 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27005571-b26c-4ebb-85fe-687e4983ef0a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2024-11-28 04:36:53,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:36:53,699 INFO L256 TraceCheckSpWp]: Trace formula consists of 865 conjuncts, 114 conjuncts are in the unsatisfiable core [2024-11-28 04:36:53,726 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:36:53,857 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2024-11-28 04:36:53,871 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2024-11-28 04:36:53,871 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2024-11-28 04:36:53,901 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 [2024-11-28 04:36:53,913 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 [2024-11-28 04:36:54,031 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 [2024-11-28 04:36:54,035 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 [2024-11-28 04:36:54,849 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-28 04:36:54,849 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 [2024-11-28 04:36:54,858 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 [2024-11-28 04:36:54,973 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-28 04:36:54,973 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 [2024-11-28 04:36:54,984 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 [2024-11-28 04:36:55,089 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-28 04:36:55,089 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 [2024-11-28 04:36:55,099 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 [2024-11-28 04:36:55,144 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 [2024-11-28 04:36:55,151 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 [2024-11-28 04:36:55,180 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 946 trivial. 0 not checked. [2024-11-28 04:36:55,180 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:36:55,327 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse0 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (and (forall ((v_ArrVal_4648 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_4647 (Array (_ BitVec 32) (_ BitVec 32)))) (bvule (bvadd (_ bv12 32) (select (select (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_#t~mem39#1.base| v_ArrVal_4647) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0)) (select |c_#length| (select (select (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem39#1.base| v_ArrVal_4648) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0)))) (forall ((v_ArrVal_4647 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse1 (select (select (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_#t~mem39#1.base| v_ArrVal_4647) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0))) (bvule (bvadd (_ bv8 32) .cse1) (bvadd (_ bv12 32) .cse1)))))) is different from false [2024-11-28 04:36:55,355 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse2 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (let ((.cse1 (select (select |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (and (forall ((v_ArrVal_4647 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (select (store |c_#memory_$Pointer$#1.offset| .cse1 v_ArrVal_4647) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (bvule (bvadd .cse0 (_ bv8 32)) (bvadd .cse0 (_ bv12 32))))) (forall ((v_ArrVal_4648 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_4647 (Array (_ BitVec 32) (_ BitVec 32)))) (bvule (bvadd (select (select (store |c_#memory_$Pointer$#1.offset| .cse1 v_ArrVal_4647) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2) (_ bv12 32)) (select |c_#length| (select (select (store |c_#memory_$Pointer$#1.base| .cse1 v_ArrVal_4648) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))))))) is different from false [2024-11-28 04:36:55,409 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (and (forall ((v_ArrVal_4648 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_4645 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_4647 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_4646 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse2 (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem38#1.base| v_ArrVal_4645))) (let ((.cse0 (select (select .cse2 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (bvule (bvadd (_ bv12 32) (select (select (store (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_#t~mem38#1.base| v_ArrVal_4646) .cse0 v_ArrVal_4647) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)) (select |c_#length| (select (select (store .cse2 .cse0 v_ArrVal_4648) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))))) (forall ((v_ArrVal_4645 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_4647 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_4646 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse3 (select (select (store (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_#t~mem38#1.base| v_ArrVal_4646) (select (select (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem38#1.base| v_ArrVal_4645) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_4647) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (bvule (bvadd (_ bv8 32) .cse3) (bvadd (_ bv12 32) .cse3)))))) is different from false [2024-11-28 04:36:55,491 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse2 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (let ((.cse1 (select (select |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (and (forall ((v_ArrVal_4645 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_4647 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_4646 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (select (store (store |c_#memory_$Pointer$#1.offset| .cse1 v_ArrVal_4646) (select (select (store |c_#memory_$Pointer$#1.base| .cse1 v_ArrVal_4645) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2) v_ArrVal_4647) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (bvule (bvadd (_ bv8 32) .cse0) (bvadd (_ bv12 32) .cse0)))) (forall ((v_ArrVal_4648 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_4645 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_4647 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_4646 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse4 (store |c_#memory_$Pointer$#1.base| .cse1 v_ArrVal_4645))) (let ((.cse3 (select (select .cse4 |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (bvule (bvadd (_ bv12 32) (select (select (store (store |c_#memory_$Pointer$#1.offset| .cse1 v_ArrVal_4646) .cse3 v_ArrVal_4647) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2)) (select |c_#length| (select (select (store .cse4 .cse3 v_ArrVal_4648) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))))))))) is different from false [2024-11-28 04:36:59,757 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse3 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (and (forall ((v_ArrVal_4739 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_4645 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_4647 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_4646 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_4740 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (select (let ((.cse2 (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem36#1.base| v_ArrVal_4740))) (let ((.cse1 (select (select .cse2 |c_ULTIMATE.start_main_~user~0#1.base|) .cse3))) (store (store (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_#t~mem36#1.base| v_ArrVal_4739) .cse1 v_ArrVal_4646) (select (select (store .cse2 .cse1 v_ArrVal_4645) |c_ULTIMATE.start_main_~user~0#1.base|) .cse3) v_ArrVal_4647))) |c_ULTIMATE.start_main_~user~0#1.base|) .cse3))) (bvule (bvadd (_ bv8 32) .cse0) (bvadd (_ bv12 32) .cse0)))) (forall ((v_ArrVal_4648 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_4739 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_4645 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_4647 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_4646 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_4740 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse7 (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem36#1.base| v_ArrVal_4740))) (let ((.cse4 (select (select .cse7 |c_ULTIMATE.start_main_~user~0#1.base|) .cse3))) (let ((.cse6 (store .cse7 .cse4 v_ArrVal_4645))) (let ((.cse5 (select (select .cse6 |c_ULTIMATE.start_main_~user~0#1.base|) .cse3))) (bvule (bvadd (_ bv12 32) (select (select (store (store (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_#t~mem36#1.base| v_ArrVal_4739) .cse4 v_ArrVal_4646) .cse5 v_ArrVal_4647) |c_ULTIMATE.start_main_~user~0#1.base|) .cse3)) (select |c_#length| (select (select (store .cse6 .cse5 v_ArrVal_4648) |c_ULTIMATE.start_main_~user~0#1.base|) .cse3)))))))))) is different from false [2024-11-28 04:36:59,773 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 04:36:59,773 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1053054626] [2024-11-28 04:36:59,773 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1053054626] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:36:59,773 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1133633193] [2024-11-28 04:36:59,773 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:36:59,773 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-28 04:36:59,773 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27005571-b26c-4ebb-85fe-687e4983ef0a/bin/uautomizer-verify-aQ6SnzHsRB/cvc4 [2024-11-28 04:36:59,775 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27005571-b26c-4ebb-85fe-687e4983ef0a/bin/uautomizer-verify-aQ6SnzHsRB/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-28 04:36:59,777 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27005571-b26c-4ebb-85fe-687e4983ef0a/bin/uautomizer-verify-aQ6SnzHsRB/cvc4 --incremental --print-success --lang smt (31)] Waiting until timeout for monitored process [2024-11-28 04:37:10,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:37:10,980 INFO L256 TraceCheckSpWp]: Trace formula consists of 865 conjuncts, 117 conjuncts are in the unsatisfiable core [2024-11-28 04:37:10,993 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:37:11,008 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2024-11-28 04:37:11,783 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2024-11-28 04:37:11,783 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 [2024-11-28 04:37:11,810 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 [2024-11-28 04:37:11,855 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 [2024-11-28 04:37:11,871 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 [2024-11-28 04:37:12,126 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 [2024-11-28 04:37:12,141 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 [2024-11-28 04:37:14,877 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-28 04:37:14,878 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 [2024-11-28 04:37:14,907 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 [2024-11-28 04:37:15,174 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-28 04:37:15,174 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 [2024-11-28 04:37:15,204 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 [2024-11-28 04:37:15,418 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-28 04:37:15,418 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 [2024-11-28 04:37:15,456 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 [2024-11-28 04:37:15,562 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 [2024-11-28 04:37:15,590 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 [2024-11-28 04:37:15,592 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 946 trivial. 0 not checked. [2024-11-28 04:37:15,592 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:37:15,747 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse0 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (and (forall ((v_ArrVal_5227 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_5228 (Array (_ BitVec 32) (_ BitVec 32)))) (bvule (bvadd (select (select (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_#t~mem39#1.base| v_ArrVal_5227) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0) (_ bv12 32)) (select |c_#length| (select (select (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem39#1.base| v_ArrVal_5228) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0)))) (forall ((v_ArrVal_5227 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse1 (select (select (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_#t~mem39#1.base| v_ArrVal_5227) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0))) (bvule (bvadd .cse1 (_ bv8 32)) (bvadd .cse1 (_ bv12 32))))))) is different from false [2024-11-28 04:37:15,837 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (let ((.cse0 (select (select |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (and (forall ((v_ArrVal_5227 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_5228 (Array (_ BitVec 32) (_ BitVec 32)))) (bvule (bvadd (select (select (store |c_#memory_$Pointer$#1.offset| .cse0 v_ArrVal_5227) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) (_ bv12 32)) (select |c_#length| (select (select (store |c_#memory_$Pointer$#1.base| .cse0 v_ArrVal_5228) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))) (forall ((v_ArrVal_5227 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse2 (select (select (store |c_#memory_$Pointer$#1.offset| .cse0 v_ArrVal_5227) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (bvule (bvadd .cse2 (_ bv8 32)) (bvadd .cse2 (_ bv12 32)))))))) is different from false [2024-11-28 04:37:15,952 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (and (forall ((v_ArrVal_5227 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_5228 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_5225 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_5226 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse2 (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem38#1.base| v_ArrVal_5226))) (let ((.cse0 (select (select .cse2 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (bvule (bvadd (_ bv12 32) (select (select (store (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_#t~mem38#1.base| v_ArrVal_5225) .cse0 v_ArrVal_5227) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)) (select |c_#length| (select (select (store .cse2 .cse0 v_ArrVal_5228) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))))) (forall ((v_ArrVal_5227 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_5225 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_5226 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse3 (select (select (store (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_#t~mem38#1.base| v_ArrVal_5225) (select (select (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem38#1.base| v_ArrVal_5226) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_5227) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (bvule (bvadd (_ bv8 32) .cse3) (bvadd (_ bv12 32) .cse3)))))) is different from false [2024-11-28 04:37:16,028 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse2 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (let ((.cse0 (select (select |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (and (forall ((v_ArrVal_5227 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_5228 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_5225 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_5226 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse3 (store |c_#memory_$Pointer$#1.base| .cse0 v_ArrVal_5226))) (let ((.cse1 (select (select .cse3 |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (bvule (bvadd (_ bv12 32) (select (select (store (store |c_#memory_$Pointer$#1.offset| .cse0 v_ArrVal_5225) .cse1 v_ArrVal_5227) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2)) (select |c_#length| (select (select (store .cse3 .cse1 v_ArrVal_5228) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2)))))) (forall ((v_ArrVal_5227 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_5225 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_5226 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse4 (select (select (store (store |c_#memory_$Pointer$#1.offset| .cse0 v_ArrVal_5225) (select (select (store |c_#memory_$Pointer$#1.base| .cse0 v_ArrVal_5226) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2) v_ArrVal_5227) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (bvule (bvadd (_ bv8 32) .cse4) (bvadd (_ bv12 32) .cse4))))))) is different from false [2024-11-28 04:37:19,070 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse2 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (and (forall ((v_ArrVal_5319 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_5227 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_5228 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_5225 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_5226 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_5320 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse4 (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem36#1.base| v_ArrVal_5320))) (let ((.cse0 (select (select .cse4 |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (let ((.cse3 (store .cse4 .cse0 v_ArrVal_5226))) (let ((.cse1 (select (select .cse3 |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (bvule (bvadd (_ bv12 32) (select (select (store (store (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_#t~mem36#1.base| v_ArrVal_5319) .cse0 v_ArrVal_5225) .cse1 v_ArrVal_5227) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2)) (select |c_#length| (select (select (store .cse3 .cse1 v_ArrVal_5228) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2)))))))) (forall ((v_ArrVal_5319 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_5227 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_5225 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_5226 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_5320 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse5 (select (select (let ((.cse7 (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem36#1.base| v_ArrVal_5320))) (let ((.cse6 (select (select .cse7 |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (store (store (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_#t~mem36#1.base| v_ArrVal_5319) .cse6 v_ArrVal_5225) (select (select (store .cse7 .cse6 v_ArrVal_5226) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2) v_ArrVal_5227))) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (bvule (bvadd (_ bv8 32) .cse5) (bvadd (_ bv12 32) .cse5)))))) is different from false [2024-11-28 04:37:19,084 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1133633193] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:37:19,085 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-28 04:37:19,085 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 10 [2024-11-28 04:37:19,085 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [863393271] [2024-11-28 04:37:19,085 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-28 04:37:19,085 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-28 04:37:19,085 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 04:37:19,086 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-28 04:37:19,086 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=134, Unknown=10, NotChecked=310, Total=506 [2024-11-28 04:37:19,086 INFO L87 Difference]: Start difference. First operand 1426 states and 1690 transitions. Second operand has 11 states, 9 states have (on average 9.444444444444445) internal successors, (85), 11 states have internal predecessors, (85), 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) [2024-11-28 04:37:46,156 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:37:46,157 INFO L93 Difference]: Finished difference Result 1433 states and 1697 transitions. [2024-11-28 04:37:46,157 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-28 04:37:46,157 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 9 states have (on average 9.444444444444445) internal successors, (85), 11 states have internal predecessors, (85), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 125 [2024-11-28 04:37:46,158 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:37:46,162 INFO L225 Difference]: With dead ends: 1433 [2024-11-28 04:37:46,162 INFO L226 Difference]: Without dead ends: 1433 [2024-11-28 04:37:46,162 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 274 GetRequests, 244 SyntacticMatches, 3 SemanticMatches, 27 ConstructedPredicates, 10 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 4.7s TimeCoverageRelationStatistics Valid=90, Invalid=282, Unknown=10, NotChecked=430, Total=812 [2024-11-28 04:37:46,163 INFO L435 NwaCegarLoop]: 788 mSDtfsCounter, 801 mSDsluCounter, 2104 mSDsCounter, 0 mSdLazyCounter, 3385 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 24.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 805 SdHoareTripleChecker+Valid, 2892 SdHoareTripleChecker+Invalid, 3392 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 3385 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 26.2s IncrementalHoareTripleChecker+Time [2024-11-28 04:37:46,163 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [805 Valid, 2892 Invalid, 3392 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 3385 Invalid, 0 Unknown, 0 Unchecked, 26.2s Time] [2024-11-28 04:37:46,165 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1433 states. [2024-11-28 04:37:46,178 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1433 to 1425. [2024-11-28 04:37:46,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1425 states, 954 states have (on average 1.721174004192872) internal successors, (1642), 1412 states have internal predecessors, (1642), 24 states have call successors, (24), 5 states have call predecessors, (24), 5 states have return successors, (23), 8 states have call predecessors, (23), 22 states have call successors, (23) [2024-11-28 04:37:46,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1425 states to 1425 states and 1689 transitions. [2024-11-28 04:37:46,182 INFO L78 Accepts]: Start accepts. Automaton has 1425 states and 1689 transitions. Word has length 125 [2024-11-28 04:37:46,182 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:37:46,183 INFO L471 AbstractCegarLoop]: Abstraction has 1425 states and 1689 transitions. [2024-11-28 04:37:46,183 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 9 states have (on average 9.444444444444445) internal successors, (85), 11 states have internal predecessors, (85), 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) [2024-11-28 04:37:46,183 INFO L276 IsEmpty]: Start isEmpty. Operand 1425 states and 1689 transitions. [2024-11-28 04:37:46,184 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2024-11-28 04:37:46,184 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:37:46,184 INFO L218 NwaCegarLoop]: trace histogram [44, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:37:46,213 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27005571-b26c-4ebb-85fe-687e4983ef0a/bin/uautomizer-verify-aQ6SnzHsRB/cvc4 --incremental --print-success --lang smt (31)] Ended with exit code 0 [2024-11-28 04:37:46,408 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27005571-b26c-4ebb-85fe-687e4983ef0a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Ended with exit code 0 [2024-11-28 04:37:46,585 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27005571-b26c-4ebb-85fe-687e4983ef0a/bin/uautomizer-verify-aQ6SnzHsRB/cvc4 --incremental --print-success --lang smt,30 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27005571-b26c-4ebb-85fe-687e4983ef0a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:37:46,585 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr88REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 631 more)] === [2024-11-28 04:37:46,585 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:37:46,586 INFO L85 PathProgramCache]: Analyzing trace with hash 2139832237, now seen corresponding path program 1 times [2024-11-28 04:37:46,586 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 04:37:46,586 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1310338346] [2024-11-28 04:37:46,586 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:37:46,586 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:37:46,586 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27005571-b26c-4ebb-85fe-687e4983ef0a/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:37:46,588 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27005571-b26c-4ebb-85fe-687e4983ef0a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:37:46,589 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27005571-b26c-4ebb-85fe-687e4983ef0a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Waiting until timeout for monitored process [2024-11-28 04:37:47,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:37:47,298 INFO L256 TraceCheckSpWp]: Trace formula consists of 865 conjuncts, 61 conjuncts are in the unsatisfiable core [2024-11-28 04:37:47,305 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:37:47,322 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 [2024-11-28 04:37:48,163 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2024-11-28 04:37:48,164 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 [2024-11-28 04:37:48,271 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 [2024-11-28 04:37:50,466 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-28 04:37:50,466 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 [2024-11-28 04:37:50,896 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-28 04:37:50,896 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 [2024-11-28 04:37:51,274 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-28 04:37:51,274 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 [2024-11-28 04:37:51,344 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 [2024-11-28 04:37:51,472 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 946 trivial. 0 not checked. [2024-11-28 04:37:51,472 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:37:51,660 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_5759 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (_ bv1 1) (select |c_#valid| (select (select (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem39#1.base| v_ArrVal_5759) |c_ULTIMATE.start_main_~user~0#1.base|) (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|)))))) is different from false [2024-11-28 04:37:51,702 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_5759 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (_ bv1 1) (select |c_#valid| (let ((.cse0 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (store |c_#memory_$Pointer$#1.base| (select (select |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse0) v_ArrVal_5759) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0)))))) is different from false [2024-11-28 04:37:51,749 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_5759 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_5758 (Array (_ BitVec 32) (_ BitVec 32)))) (= (bvadd (_ bv1 1) (select |c_#valid| (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (let ((.cse0 (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem38#1.base| v_ArrVal_5758))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_5759)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))) (_ bv0 1))) is different from false [2024-11-28 04:37:51,781 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_5759 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_5758 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (_ bv1 1) (select |c_#valid| (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (let ((.cse0 (store |c_#memory_$Pointer$#1.base| (select (select |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_5758))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_5759)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))))) is different from false [2024-11-28 04:37:52,997 INFO L349 Elim1Store]: treesize reduction 7, result has 87.3 percent of original size [2024-11-28 04:37:52,998 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 61 treesize of output 60 [2024-11-28 04:37:53,035 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_5759 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_5805 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_5758 (Array (_ BitVec 32) (_ BitVec 32)))) (= (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (let ((.cse0 (let ((.cse2 (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem36#1.base| v_ArrVal_5805))) (store .cse2 (select (select .cse2 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_5758)))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_5759)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)) |c_ULTIMATE.start_main_#t~mem36#1.base|)) is different from false [2024-11-28 04:37:53,045 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 04:37:53,045 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1310338346] [2024-11-28 04:37:53,045 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1310338346] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:37:53,045 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1081305473] [2024-11-28 04:37:53,045 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:37:53,045 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-28 04:37:53,046 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27005571-b26c-4ebb-85fe-687e4983ef0a/bin/uautomizer-verify-aQ6SnzHsRB/cvc4 [2024-11-28 04:37:53,047 INFO L229 MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27005571-b26c-4ebb-85fe-687e4983ef0a/bin/uautomizer-verify-aQ6SnzHsRB/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-28 04:37:53,050 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27005571-b26c-4ebb-85fe-687e4983ef0a/bin/uautomizer-verify-aQ6SnzHsRB/cvc4 --incremental --print-success --lang smt (33)] Waiting until timeout for monitored process [2024-11-28 04:38:04,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:38:04,455 INFO L256 TraceCheckSpWp]: Trace formula consists of 865 conjuncts, 65 conjuncts are in the unsatisfiable core [2024-11-28 04:38:04,464 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:38:04,483 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 [2024-11-28 04:38:05,283 INFO L349 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2024-11-28 04:38:05,283 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 [2024-11-28 04:38:05,503 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 [2024-11-28 04:38:06,132 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 [2024-11-28 04:38:09,886 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-28 04:38:09,887 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 [2024-11-28 04:38:10,489 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-28 04:38:10,490 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 [2024-11-28 04:38:10,920 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-28 04:38:10,920 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 [2024-11-28 04:38:11,016 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 [2024-11-28 04:38:11,289 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 946 trivial. 0 not checked. [2024-11-28 04:38:11,289 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:38:11,702 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_6245 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (_ bv1 1) (select |c_#valid| (let ((.cse0 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (store |c_#memory_$Pointer$#1.base| (select (select |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse0) v_ArrVal_6245) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0)))))) is different from false [2024-11-28 04:38:11,758 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_6244 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_6245 (Array (_ BitVec 32) (_ BitVec 32)))) (= (bvadd (_ bv1 1) (select |c_#valid| (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (let ((.cse0 (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem38#1.base| v_ArrVal_6244))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_6245)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))) (_ bv0 1))) is different from false [2024-11-28 04:38:11,796 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_6244 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_6245 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (_ bv1 1) (select |c_#valid| (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (let ((.cse0 (store |c_#memory_$Pointer$#1.base| (select (select |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_6244))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_6245)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))))) is different from false [2024-11-28 04:38:12,874 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_6291 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_6244 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_6245 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (_ bv1 1) (select |c_#valid| (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (let ((.cse0 (let ((.cse2 (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem36#1.base| v_ArrVal_6291))) (store .cse2 (select (select .cse2 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_6244)))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_6245)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))))) is different from false [2024-11-28 04:38:12,882 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1081305473] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:38:12,882 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-28 04:38:12,882 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 10] total 20 [2024-11-28 04:38:12,882 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1308706386] [2024-11-28 04:38:12,882 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-28 04:38:12,882 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-11-28 04:38:12,882 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 04:38:12,883 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-11-28 04:38:12,883 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=101, Invalid=423, Unknown=18, NotChecked=450, Total=992 [2024-11-28 04:38:12,883 INFO L87 Difference]: Start difference. First operand 1425 states and 1689 transitions. Second operand has 21 states, 18 states have (on average 5.666666666666667) internal successors, (102), 20 states have internal predecessors, (102), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-28 04:39:02,617 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:39:02,617 INFO L93 Difference]: Finished difference Result 1434 states and 1698 transitions. [2024-11-28 04:39:02,618 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-28 04:39:02,618 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 18 states have (on average 5.666666666666667) internal successors, (102), 20 states have internal predecessors, (102), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 125 [2024-11-28 04:39:02,618 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:39:02,621 INFO L225 Difference]: With dead ends: 1434 [2024-11-28 04:39:02,622 INFO L226 Difference]: Without dead ends: 1434 [2024-11-28 04:39:02,622 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 271 GetRequests, 237 SyntacticMatches, 1 SemanticMatches, 33 ConstructedPredicates, 9 IntricatePredicates, 0 DeprecatedPredicates, 139 ImplicationChecksByTransitivity, 3.8s TimeCoverageRelationStatistics Valid=122, Invalid=546, Unknown=18, NotChecked=504, Total=1190 [2024-11-28 04:39:02,623 INFO L435 NwaCegarLoop]: 717 mSDtfsCounter, 843 mSDsluCounter, 6886 mSDsCounter, 0 mSdLazyCounter, 6854 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 47.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 863 SdHoareTripleChecker+Valid, 7603 SdHoareTripleChecker+Invalid, 6867 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 6854 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 49.1s IncrementalHoareTripleChecker+Time [2024-11-28 04:39:02,624 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [863 Valid, 7603 Invalid, 6867 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [13 Valid, 6854 Invalid, 0 Unknown, 0 Unchecked, 49.1s Time] [2024-11-28 04:39:02,627 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1434 states. [2024-11-28 04:39:02,641 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1434 to 1424. [2024-11-28 04:39:02,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1424 states, 954 states have (on average 1.720125786163522) internal successors, (1641), 1411 states have internal predecessors, (1641), 24 states have call successors, (24), 5 states have call predecessors, (24), 5 states have return successors, (23), 8 states have call predecessors, (23), 22 states have call successors, (23) [2024-11-28 04:39:02,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1424 states to 1424 states and 1688 transitions. [2024-11-28 04:39:02,647 INFO L78 Accepts]: Start accepts. Automaton has 1424 states and 1688 transitions. Word has length 125 [2024-11-28 04:39:02,647 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:39:02,647 INFO L471 AbstractCegarLoop]: Abstraction has 1424 states and 1688 transitions. [2024-11-28 04:39:02,647 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 18 states have (on average 5.666666666666667) internal successors, (102), 20 states have internal predecessors, (102), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-28 04:39:02,648 INFO L276 IsEmpty]: Start isEmpty. Operand 1424 states and 1688 transitions. [2024-11-28 04:39:02,649 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2024-11-28 04:39:02,650 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:39:02,650 INFO L218 NwaCegarLoop]: trace histogram [44, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:39:02,682 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27005571-b26c-4ebb-85fe-687e4983ef0a/bin/uautomizer-verify-aQ6SnzHsRB/cvc4 --incremental --print-success --lang smt (33)] Ended with exit code 0 [2024-11-28 04:39:02,873 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27005571-b26c-4ebb-85fe-687e4983ef0a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Ended with exit code 0 [2024-11-28 04:39:03,050 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27005571-b26c-4ebb-85fe-687e4983ef0a/bin/uautomizer-verify-aQ6SnzHsRB/cvc4 --incremental --print-success --lang smt,32 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27005571-b26c-4ebb-85fe-687e4983ef0a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:39:03,051 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr92REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 631 more)] === [2024-11-28 04:39:03,051 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:39:03,051 INFO L85 PathProgramCache]: Analyzing trace with hash 1837997225, now seen corresponding path program 1 times [2024-11-28 04:39:03,052 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 04:39:03,052 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [307446937] [2024-11-28 04:39:03,052 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:39:03,052 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:39:03,052 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27005571-b26c-4ebb-85fe-687e4983ef0a/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:39:03,053 INFO L229 MonitoredProcess]: Starting monitored process 34 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27005571-b26c-4ebb-85fe-687e4983ef0a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:39:03,055 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27005571-b26c-4ebb-85fe-687e4983ef0a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Waiting until timeout for monitored process [2024-11-28 04:39:03,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:39:03,836 INFO L256 TraceCheckSpWp]: Trace formula consists of 894 conjuncts, 62 conjuncts are in the unsatisfiable core [2024-11-28 04:39:03,843 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:39:04,599 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2024-11-28 04:39:04,599 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2024-11-28 04:39:04,679 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 [2024-11-28 04:39:06,050 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-28 04:39:06,051 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 [2024-11-28 04:39:06,293 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-28 04:39:06,294 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 [2024-11-28 04:39:06,550 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-28 04:39:06,550 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 [2024-11-28 04:39:06,828 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-28 04:39:06,828 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 44 treesize of output 43 [2024-11-28 04:39:07,050 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 [2024-11-28 04:39:07,182 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 946 trivial. 0 not checked. [2024-11-28 04:39:07,183 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:39:07,431 INFO L349 Elim1Store]: treesize reduction 7, result has 63.2 percent of original size [2024-11-28 04:39:07,431 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 [2024-11-28 04:39:07,468 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_6745 (Array (_ BitVec 32) (_ BitVec 32)))) (= (select (select (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem40#1.base| v_ArrVal_6745) |c_ULTIMATE.start_main_~user~0#1.base|) (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|)) |c_ULTIMATE.start_main_#t~mem40#1.base|)) is different from false [2024-11-28 04:39:07,514 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_6745 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (let ((.cse0 (select (select |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (= (select (select (store |c_#memory_$Pointer$#1.base| .cse0 v_ArrVal_6745) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) .cse0)))) is different from false [2024-11-28 04:39:07,586 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_6745 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_6744 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse1 (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem39#1.base| v_ArrVal_6744)) (.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_6745) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))))) is different from false [2024-11-28 04:39:07,636 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_6745 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_6744 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse2 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (let ((.cse1 (store |c_#memory_$Pointer$#1.base| (select (select |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse2) v_ArrVal_6744))) (let ((.cse0 (select (select .cse1 |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (= .cse0 (select (select (store .cse1 .cse0 v_ArrVal_6745) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2)))))) is different from false [2024-11-28 04:39:07,710 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_6745 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_6743 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_6744 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse2 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (let ((.cse1 (let ((.cse3 (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem38#1.base| v_ArrVal_6743))) (store .cse3 (select (select .cse3 |c_ULTIMATE.start_main_~user~0#1.base|) .cse2) v_ArrVal_6744)))) (let ((.cse0 (select (select .cse1 |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (= .cse0 (select (select (store .cse1 .cse0 v_ArrVal_6745) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2)))))) is different from false [2024-11-28 04:39:07,762 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_6745 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_6743 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_6744 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse2 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (let ((.cse0 (let ((.cse3 (store |c_#memory_$Pointer$#1.base| (select (select |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse2) v_ArrVal_6743))) (store .cse3 (select (select .cse3 |c_ULTIMATE.start_main_~user~0#1.base|) .cse2) v_ArrVal_6744)))) (let ((.cse1 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (= (select (select (store .cse0 .cse1 v_ArrVal_6745) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2) .cse1))))) is different from false [2024-11-28 04:39:08,824 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_6791 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_6745 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_6743 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_6744 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse2 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (let ((.cse1 (let ((.cse3 (let ((.cse4 (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem36#1.base| v_ArrVal_6791))) (store .cse4 (select (select .cse4 |c_ULTIMATE.start_main_~user~0#1.base|) .cse2) v_ArrVal_6743)))) (store .cse3 (select (select .cse3 |c_ULTIMATE.start_main_~user~0#1.base|) .cse2) v_ArrVal_6744)))) (let ((.cse0 (select (select .cse1 |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (= .cse0 (select (select (store .cse1 .cse0 v_ArrVal_6745) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2)))))) is different from false [2024-11-28 04:39:08,831 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 04:39:08,832 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [307446937] [2024-11-28 04:39:08,832 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [307446937] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:39:08,832 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1557637721] [2024-11-28 04:39:08,832 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:39:08,832 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-28 04:39:08,832 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27005571-b26c-4ebb-85fe-687e4983ef0a/bin/uautomizer-verify-aQ6SnzHsRB/cvc4 [2024-11-28 04:39:08,834 INFO L229 MonitoredProcess]: Starting monitored process 35 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27005571-b26c-4ebb-85fe-687e4983ef0a/bin/uautomizer-verify-aQ6SnzHsRB/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-28 04:39:08,835 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27005571-b26c-4ebb-85fe-687e4983ef0a/bin/uautomizer-verify-aQ6SnzHsRB/cvc4 --incremental --print-success --lang smt (35)] Waiting until timeout for monitored process [2024-11-28 04:39:25,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:39:25,592 INFO L256 TraceCheckSpWp]: Trace formula consists of 894 conjuncts, 67 conjuncts are in the unsatisfiable core [2024-11-28 04:39:25,602 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:39:25,624 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 [2024-11-28 04:39:26,641 INFO L349 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2024-11-28 04:39:26,641 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 [2024-11-28 04:39:26,888 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 [2024-11-28 04:39:27,553 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 [2024-11-28 04:39:31,425 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-28 04:39:31,426 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 44 treesize of output 43 [2024-11-28 04:39:32,045 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-28 04:39:32,045 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 [2024-11-28 04:39:32,501 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-28 04:39:32,501 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 [2024-11-28 04:39:32,973 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-28 04:39:32,973 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 [2024-11-28 04:39:33,074 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 [2024-11-28 04:39:33,346 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 946 trivial. 0 not checked. [2024-11-28 04:39:33,346 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:39:33,806 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_7247 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (_ bv1 1) (select |c_#valid| (let ((.cse0 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (store |c_#memory_$Pointer$#1.base| (select (select |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse0) v_ArrVal_7247) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0)))))) is different from false [2024-11-28 04:39:33,862 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_7247 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7246 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (_ bv1 1) (select |c_#valid| (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (let ((.cse0 (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem39#1.base| v_ArrVal_7246))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_7247)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))))) is different from false [2024-11-28 04:39:33,897 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_7247 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7246 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (_ bv1 1) (select |c_#valid| (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (let ((.cse0 (store |c_#memory_$Pointer$#1.base| (select (select |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_7246))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_7247)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))))) is different from false [2024-11-28 04:39:33,950 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_7247 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7245 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7246 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (_ bv1 1) (select |c_#valid| (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (let ((.cse0 (let ((.cse2 (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem38#1.base| v_ArrVal_7245))) (store .cse2 (select (select .cse2 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_7246)))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_7247)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))))) is different from false [2024-11-28 04:39:33,987 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_7247 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7245 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7246 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (_ bv1 1) (select |c_#valid| (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (let ((.cse0 (let ((.cse2 (store |c_#memory_$Pointer$#1.base| (select (select |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_7245))) (store .cse2 (select (select .cse2 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_7246)))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_7247)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))))) is different from false [2024-11-28 04:39:35,092 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_7293 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7247 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7245 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7246 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (_ bv1 1) (select |c_#valid| (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (let ((.cse0 (let ((.cse2 (let ((.cse3 (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem36#1.base| v_ArrVal_7293))) (store .cse3 (select (select .cse3 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_7245)))) (store .cse2 (select (select .cse2 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_7246)))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_7247)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))))) is different from false [2024-11-28 04:39:35,125 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1557637721] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:39:35,125 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-28 04:39:35,125 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11] total 21 [2024-11-28 04:39:35,125 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2018286179] [2024-11-28 04:39:35,125 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-28 04:39:35,126 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2024-11-28 04:39:35,126 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 04:39:35,126 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2024-11-28 04:39:35,127 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=114, Invalid=465, Unknown=25, NotChecked=728, Total=1332 [2024-11-28 04:39:35,127 INFO L87 Difference]: Start difference. First operand 1424 states and 1688 transitions. Second operand has 22 states, 19 states have (on average 5.894736842105263) internal successors, (112), 22 states have internal predecessors, (112), 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) [2024-11-28 04:40:07,903 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:40:07,903 INFO L93 Difference]: Finished difference Result 1433 states and 1697 transitions. [2024-11-28 04:40:07,904 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-28 04:40:07,904 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 19 states have (on average 5.894736842105263) internal successors, (112), 22 states have internal predecessors, (112), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 128 [2024-11-28 04:40:07,905 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:40:07,908 INFO L225 Difference]: With dead ends: 1433 [2024-11-28 04:40:07,908 INFO L226 Difference]: Without dead ends: 1433 [2024-11-28 04:40:07,908 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 281 GetRequests, 244 SyntacticMatches, 1 SemanticMatches, 36 ConstructedPredicates, 13 IntricatePredicates, 0 DeprecatedPredicates, 118 ImplicationChecksByTransitivity, 4.0s TimeCoverageRelationStatistics Valid=123, Invalid=503, Unknown=26, NotChecked=754, Total=1406 [2024-11-28 04:40:07,909 INFO L435 NwaCegarLoop]: 718 mSDtfsCounter, 843 mSDsluCounter, 4598 mSDsCounter, 0 mSdLazyCounter, 4442 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 31.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 863 SdHoareTripleChecker+Valid, 5316 SdHoareTripleChecker+Invalid, 4452 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 4442 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 32.5s IncrementalHoareTripleChecker+Time [2024-11-28 04:40:07,909 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [863 Valid, 5316 Invalid, 4452 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [10 Valid, 4442 Invalid, 0 Unknown, 0 Unchecked, 32.5s Time] [2024-11-28 04:40:07,911 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1433 states. [2024-11-28 04:40:07,924 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1433 to 1423. [2024-11-28 04:40:07,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1423 states, 954 states have (on average 1.719077568134172) internal successors, (1640), 1410 states have internal predecessors, (1640), 24 states have call successors, (24), 5 states have call predecessors, (24), 5 states have return successors, (23), 8 states have call predecessors, (23), 22 states have call successors, (23) [2024-11-28 04:40:07,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1423 states to 1423 states and 1687 transitions. [2024-11-28 04:40:07,929 INFO L78 Accepts]: Start accepts. Automaton has 1423 states and 1687 transitions. Word has length 128 [2024-11-28 04:40:07,929 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:40:07,930 INFO L471 AbstractCegarLoop]: Abstraction has 1423 states and 1687 transitions. [2024-11-28 04:40:07,930 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 19 states have (on average 5.894736842105263) internal successors, (112), 22 states have internal predecessors, (112), 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) [2024-11-28 04:40:07,930 INFO L276 IsEmpty]: Start isEmpty. Operand 1423 states and 1687 transitions. [2024-11-28 04:40:07,931 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2024-11-28 04:40:07,931 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:40:07,931 INFO L218 NwaCegarLoop]: trace histogram [44, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:40:07,965 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27005571-b26c-4ebb-85fe-687e4983ef0a/bin/uautomizer-verify-aQ6SnzHsRB/cvc4 --incremental --print-success --lang smt (35)] Forceful destruction successful, exit code 0 [2024-11-28 04:40:08,154 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27005571-b26c-4ebb-85fe-687e4983ef0a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Ended with exit code 0 [2024-11-28 04:40:08,332 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27005571-b26c-4ebb-85fe-687e4983ef0a/bin/uautomizer-verify-aQ6SnzHsRB/cvc4 --incremental --print-success --lang smt,34 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27005571-b26c-4ebb-85fe-687e4983ef0a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:40:08,332 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr93REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 631 more)] === [2024-11-28 04:40:08,332 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:40:08,332 INFO L85 PathProgramCache]: Analyzing trace with hash 1837997226, now seen corresponding path program 1 times [2024-11-28 04:40:08,333 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 04:40:08,333 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1380480465] [2024-11-28 04:40:08,333 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:40:08,333 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:40:08,333 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27005571-b26c-4ebb-85fe-687e4983ef0a/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:40:08,335 INFO L229 MonitoredProcess]: Starting monitored process 36 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27005571-b26c-4ebb-85fe-687e4983ef0a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:40:08,336 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27005571-b26c-4ebb-85fe-687e4983ef0a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Waiting until timeout for monitored process [2024-11-28 04:40:09,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:40:09,146 INFO L256 TraceCheckSpWp]: Trace formula consists of 894 conjuncts, 118 conjuncts are in the unsatisfiable core [2024-11-28 04:40:09,157 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:40:09,862 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 [2024-11-28 04:40:09,932 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2024-11-28 04:40:09,932 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 [2024-11-28 04:40:10,040 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 [2024-11-28 04:40:10,072 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 [2024-11-28 04:40:10,513 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 [2024-11-28 04:40:10,534 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 [2024-11-28 04:40:13,361 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-28 04:40:13,361 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 62 treesize of output 57 [2024-11-28 04:40:13,390 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 [2024-11-28 04:40:13,811 INFO L349 Elim1Store]: treesize reduction 31, result has 22.5 percent of original size [2024-11-28 04:40:13,812 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 67 treesize of output 39 [2024-11-28 04:40:13,855 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 [2024-11-28 04:40:14,450 INFO L349 Elim1Store]: treesize reduction 29, result has 14.7 percent of original size [2024-11-28 04:40:14,450 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 77 treesize of output 64 [2024-11-28 04:40:14,479 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 [2024-11-28 04:40:14,522 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2024-11-28 04:40:14,897 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-28 04:40:14,898 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 [2024-11-28 04:40:14,913 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 [2024-11-28 04:40:15,025 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 [2024-11-28 04:40:15,040 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 [2024-11-28 04:40:15,243 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 946 trivial. 0 not checked. [2024-11-28 04:40:15,244 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:40:15,711 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (and (forall ((v_ArrVal_7796 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (select (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_#t~mem40#1.base| v_ArrVal_7796) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (bvule (bvadd (_ bv20 32) .cse0) (bvadd (_ bv24 32) .cse0)))) (forall ((v_ArrVal_7797 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7796 (Array (_ BitVec 32) (_ BitVec 32)))) (bvule (bvadd (_ bv24 32) (select (select (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_#t~mem40#1.base| v_ArrVal_7796) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)) (select |c_#length| (select (select (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem40#1.base| v_ArrVal_7797) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))))) is different from false [2024-11-28 04:40:15,773 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse2 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (let ((.cse1 (select (select |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (and (forall ((v_ArrVal_7796 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (select (store |c_#memory_$Pointer$#1.offset| .cse1 v_ArrVal_7796) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (bvule (bvadd (_ bv20 32) .cse0) (bvadd (_ bv24 32) .cse0)))) (forall ((v_ArrVal_7797 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7796 (Array (_ BitVec 32) (_ BitVec 32)))) (bvule (bvadd (_ bv24 32) (select (select (store |c_#memory_$Pointer$#1.offset| .cse1 v_ArrVal_7796) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2)) (select |c_#length| (select (select (store |c_#memory_$Pointer$#1.base| .cse1 v_ArrVal_7797) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))))))) is different from false [2024-11-28 04:40:15,905 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (and (forall ((v_ArrVal_7796 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7795 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7794 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (select (store (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_#t~mem39#1.base| v_ArrVal_7795) (select (select (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem39#1.base| v_ArrVal_7794) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_7796) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (bvule (bvadd (_ bv20 32) .cse0) (bvadd (_ bv24 32) .cse0)))) (forall ((v_ArrVal_7797 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7796 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7795 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7794 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse3 (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem39#1.base| v_ArrVal_7794))) (let ((.cse2 (select (select .cse3 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (bvule (bvadd (_ bv24 32) (select (select (store (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_#t~mem39#1.base| v_ArrVal_7795) .cse2 v_ArrVal_7796) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)) (select |c_#length| (select (select (store .cse3 .cse2 v_ArrVal_7797) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))))))) is different from false [2024-11-28 04:40:16,015 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse2 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (let ((.cse1 (select (select |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (and (forall ((v_ArrVal_7796 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7795 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7794 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (select (store (store |c_#memory_$Pointer$#1.offset| .cse1 v_ArrVal_7795) (select (select (store |c_#memory_$Pointer$#1.base| .cse1 v_ArrVal_7794) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2) v_ArrVal_7796) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (bvule (bvadd (_ bv20 32) .cse0) (bvadd (_ bv24 32) .cse0)))) (forall ((v_ArrVal_7797 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7796 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7795 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7794 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse4 (store |c_#memory_$Pointer$#1.base| .cse1 v_ArrVal_7794))) (let ((.cse3 (select (select .cse4 |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (bvule (bvadd (_ bv24 32) (select (select (store (store |c_#memory_$Pointer$#1.offset| .cse1 v_ArrVal_7795) .cse3 v_ArrVal_7796) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2)) (select |c_#length| (select (select (store .cse4 .cse3 v_ArrVal_7797) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))))))))) is different from false [2024-11-28 04:40:16,295 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse3 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|)) (.cse4 (select |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem38#1.base|))) (and (forall ((|ULTIMATE.start_main_#t~mem38#1.offset| (_ BitVec 32)) (v_ArrVal_7796 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7795 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7794 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7793 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (select (let ((.cse2 (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem38#1.base| (store .cse4 (bvadd (_ bv16 32) |ULTIMATE.start_main_#t~mem38#1.offset|) |c_ULTIMATE.start_main_~user~0#1.base|)))) (let ((.cse1 (select (select .cse2 |c_ULTIMATE.start_main_~user~0#1.base|) .cse3))) (store (store (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_#t~mem38#1.base| v_ArrVal_7793) .cse1 v_ArrVal_7795) (select (select (store .cse2 .cse1 v_ArrVal_7794) |c_ULTIMATE.start_main_~user~0#1.base|) .cse3) v_ArrVal_7796))) |c_ULTIMATE.start_main_~user~0#1.base|) .cse3))) (bvule (bvadd (_ bv20 32) .cse0) (bvadd (_ bv24 32) .cse0)))) (forall ((|ULTIMATE.start_main_#t~mem38#1.offset| (_ BitVec 32)) (v_ArrVal_7797 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7796 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7795 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7794 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7793 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse8 (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem38#1.base| (store .cse4 (bvadd (_ bv16 32) |ULTIMATE.start_main_#t~mem38#1.offset|) |c_ULTIMATE.start_main_~user~0#1.base|)))) (let ((.cse5 (select (select .cse8 |c_ULTIMATE.start_main_~user~0#1.base|) .cse3))) (let ((.cse7 (store .cse8 .cse5 v_ArrVal_7794))) (let ((.cse6 (select (select .cse7 |c_ULTIMATE.start_main_~user~0#1.base|) .cse3))) (bvule (bvadd (_ bv24 32) (select (select (store (store (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_#t~mem38#1.base| v_ArrVal_7793) .cse5 v_ArrVal_7795) .cse6 v_ArrVal_7796) |c_ULTIMATE.start_main_~user~0#1.base|) .cse3)) (select |c_#length| (select (select (store .cse7 .cse6 v_ArrVal_7797) |c_ULTIMATE.start_main_~user~0#1.base|) .cse3)))))))))) is different from false [2024-11-28 04:40:16,547 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$#1.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse4))) (let ((.cse5 (select |c_#memory_$Pointer$#1.base| .cse1))) (and (forall ((|ULTIMATE.start_main_#t~mem38#1.offset| (_ BitVec 32)) (v_ArrVal_7796 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7795 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7794 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7793 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (select (let ((.cse3 (store |c_#memory_$Pointer$#1.base| .cse1 (store .cse5 (bvadd (_ bv16 32) |ULTIMATE.start_main_#t~mem38#1.offset|) |c_ULTIMATE.start_main_~user~0#1.base|)))) (let ((.cse2 (select (select .cse3 |c_ULTIMATE.start_main_~user~0#1.base|) .cse4))) (store (store (store |c_#memory_$Pointer$#1.offset| .cse1 v_ArrVal_7793) .cse2 v_ArrVal_7795) (select (select (store .cse3 .cse2 v_ArrVal_7794) |c_ULTIMATE.start_main_~user~0#1.base|) .cse4) v_ArrVal_7796))) |c_ULTIMATE.start_main_~user~0#1.base|) .cse4))) (bvule (bvadd (_ bv20 32) .cse0) (bvadd (_ bv24 32) .cse0)))) (forall ((|ULTIMATE.start_main_#t~mem38#1.offset| (_ BitVec 32)) (v_ArrVal_7797 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7796 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7795 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7794 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7793 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse9 (store |c_#memory_$Pointer$#1.base| .cse1 (store .cse5 (bvadd (_ bv16 32) |ULTIMATE.start_main_#t~mem38#1.offset|) |c_ULTIMATE.start_main_~user~0#1.base|)))) (let ((.cse6 (select (select .cse9 |c_ULTIMATE.start_main_~user~0#1.base|) .cse4))) (let ((.cse8 (store .cse9 .cse6 v_ArrVal_7794))) (let ((.cse7 (select (select .cse8 |c_ULTIMATE.start_main_~user~0#1.base|) .cse4))) (bvule (bvadd (_ bv24 32) (select (select (store (store (store |c_#memory_$Pointer$#1.offset| .cse1 v_ArrVal_7793) .cse6 v_ArrVal_7795) .cse7 v_ArrVal_7796) |c_ULTIMATE.start_main_~user~0#1.base|) .cse4)) (select |c_#length| (select (select (store .cse8 .cse7 v_ArrVal_7797) |c_ULTIMATE.start_main_~user~0#1.base|) .cse4)))))))))))) is different from false [2024-11-28 04:40:19,508 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse4 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (and (forall ((|ULTIMATE.start_main_#t~mem38#1.offset| (_ BitVec 32)) (v_ArrVal_7889 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7888 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7796 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7795 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7794 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7793 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (select (let ((.cse5 (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem36#1.base| v_ArrVal_7889))) (let ((.cse1 (select (select .cse5 |c_ULTIMATE.start_main_~user~0#1.base|) .cse4))) (let ((.cse3 (store .cse5 .cse1 (store (select .cse5 .cse1) (bvadd (_ bv16 32) |ULTIMATE.start_main_#t~mem38#1.offset|) |c_ULTIMATE.start_main_~user~0#1.base|)))) (let ((.cse2 (select (select .cse3 |c_ULTIMATE.start_main_~user~0#1.base|) .cse4))) (store (store (store (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_#t~mem36#1.base| v_ArrVal_7888) .cse1 v_ArrVal_7793) .cse2 v_ArrVal_7795) (select (select (store .cse3 .cse2 v_ArrVal_7794) |c_ULTIMATE.start_main_~user~0#1.base|) .cse4) v_ArrVal_7796))))) |c_ULTIMATE.start_main_~user~0#1.base|) .cse4))) (bvule (bvadd (_ bv20 32) .cse0) (bvadd (_ bv24 32) .cse0)))) (forall ((|ULTIMATE.start_main_#t~mem38#1.offset| (_ BitVec 32)) (v_ArrVal_7889 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7888 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7797 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7796 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7795 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7794 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7793 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse11 (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem36#1.base| v_ArrVal_7889))) (let ((.cse6 (select (select .cse11 |c_ULTIMATE.start_main_~user~0#1.base|) .cse4))) (let ((.cse10 (store .cse11 .cse6 (store (select .cse11 .cse6) (bvadd (_ bv16 32) |ULTIMATE.start_main_#t~mem38#1.offset|) |c_ULTIMATE.start_main_~user~0#1.base|)))) (let ((.cse7 (select (select .cse10 |c_ULTIMATE.start_main_~user~0#1.base|) .cse4))) (let ((.cse9 (store .cse10 .cse7 v_ArrVal_7794))) (let ((.cse8 (select (select .cse9 |c_ULTIMATE.start_main_~user~0#1.base|) .cse4))) (bvule (bvadd (_ bv24 32) (select (select (store (store (store (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_#t~mem36#1.base| v_ArrVal_7888) .cse6 v_ArrVal_7793) .cse7 v_ArrVal_7795) .cse8 v_ArrVal_7796) |c_ULTIMATE.start_main_~user~0#1.base|) .cse4)) (select |c_#length| (select (select (store .cse9 .cse8 v_ArrVal_7797) |c_ULTIMATE.start_main_~user~0#1.base|) .cse4)))))))))))) is different from false [2024-11-28 04:40:19,634 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 04:40:19,634 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1380480465] [2024-11-28 04:40:19,634 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1380480465] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:40:19,634 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1768396011] [2024-11-28 04:40:19,634 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:40:19,634 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-28 04:40:19,634 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27005571-b26c-4ebb-85fe-687e4983ef0a/bin/uautomizer-verify-aQ6SnzHsRB/cvc4 [2024-11-28 04:40:19,636 INFO L229 MonitoredProcess]: Starting monitored process 37 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27005571-b26c-4ebb-85fe-687e4983ef0a/bin/uautomizer-verify-aQ6SnzHsRB/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-28 04:40:19,637 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27005571-b26c-4ebb-85fe-687e4983ef0a/bin/uautomizer-verify-aQ6SnzHsRB/cvc4 --incremental --print-success --lang smt (37)] Waiting until timeout for monitored process [2024-11-28 04:40:34,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:40:34,986 INFO L256 TraceCheckSpWp]: Trace formula consists of 894 conjuncts, 119 conjuncts are in the unsatisfiable core [2024-11-28 04:40:34,999 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:40:35,012 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2024-11-28 04:40:35,759 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2024-11-28 04:40:35,759 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2024-11-28 04:40:35,786 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 [2024-11-28 04:40:35,829 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 [2024-11-28 04:40:35,857 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 [2024-11-28 04:40:36,080 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 [2024-11-28 04:40:36,095 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 [2024-11-28 04:40:38,879 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-28 04:40:38,880 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 [2024-11-28 04:40:38,908 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 [2024-11-28 04:40:39,177 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-28 04:40:39,177 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 [2024-11-28 04:40:39,206 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 [2024-11-28 04:40:39,620 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-28 04:40:39,620 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 62 treesize of output 57 [2024-11-28 04:40:39,649 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 [2024-11-28 04:40:39,861 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-28 04:40:39,861 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 [2024-11-28 04:40:39,890 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 [2024-11-28 04:40:39,988 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 [2024-11-28 04:40:40,003 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 [2024-11-28 04:40:40,026 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 946 trivial. 0 not checked. [2024-11-28 04:40:40,026 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:40:40,233 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (and (forall ((v_ArrVal_8393 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (select (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_#t~mem40#1.base| v_ArrVal_8393) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (bvule (bvadd (_ bv20 32) .cse0) (bvadd (_ bv24 32) .cse0)))) (forall ((v_ArrVal_8394 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8393 (Array (_ BitVec 32) (_ BitVec 32)))) (bvule (bvadd (_ bv24 32) (select (select (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_#t~mem40#1.base| v_ArrVal_8393) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)) (select |c_#length| (select (select (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem40#1.base| v_ArrVal_8394) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))))) is different from false [2024-11-28 04:40:40,295 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (let ((.cse0 (select (select |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (and (forall ((v_ArrVal_8394 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8393 (Array (_ BitVec 32) (_ BitVec 32)))) (bvule (bvadd (_ bv24 32) (select (select (store |c_#memory_$Pointer$#1.offset| .cse0 v_ArrVal_8393) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)) (select |c_#length| (select (select (store |c_#memory_$Pointer$#1.base| .cse0 v_ArrVal_8394) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))) (forall ((v_ArrVal_8393 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse2 (select (select (store |c_#memory_$Pointer$#1.offset| .cse0 v_ArrVal_8393) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (bvule (bvadd (_ bv20 32) .cse2) (bvadd (_ bv24 32) .cse2))))))) is different from false [2024-11-28 04:40:40,427 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (and (forall ((v_ArrVal_8393 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8392 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8391 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (select (store (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_#t~mem39#1.base| v_ArrVal_8392) (select (select (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem39#1.base| v_ArrVal_8391) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_8393) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (bvule (bvadd .cse0 (_ bv20 32)) (bvadd .cse0 (_ bv24 32))))) (forall ((v_ArrVal_8394 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8393 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8392 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8391 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse3 (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem39#1.base| v_ArrVal_8391))) (let ((.cse2 (select (select .cse3 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (bvule (bvadd (select (select (store (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_#t~mem39#1.base| v_ArrVal_8392) .cse2 v_ArrVal_8393) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) (_ bv24 32)) (select |c_#length| (select (select (store .cse3 .cse2 v_ArrVal_8394) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))))))) is different from false [2024-11-28 04:40:40,499 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse2 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (let ((.cse0 (select (select |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (and (forall ((v_ArrVal_8394 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8393 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8392 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8391 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse3 (store |c_#memory_$Pointer$#1.base| .cse0 v_ArrVal_8391))) (let ((.cse1 (select (select .cse3 |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (bvule (bvadd (select (select (store (store |c_#memory_$Pointer$#1.offset| .cse0 v_ArrVal_8392) .cse1 v_ArrVal_8393) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2) (_ bv24 32)) (select |c_#length| (select (select (store .cse3 .cse1 v_ArrVal_8394) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2)))))) (forall ((v_ArrVal_8393 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8392 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8391 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse4 (select (select (store (store |c_#memory_$Pointer$#1.offset| .cse0 v_ArrVal_8392) (select (select (store |c_#memory_$Pointer$#1.base| .cse0 v_ArrVal_8391) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2) v_ArrVal_8393) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (bvule (bvadd .cse4 (_ bv20 32)) (bvadd .cse4 (_ bv24 32)))))))) is different from false [2024-11-28 04:40:41,232 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse3 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (and (forall ((v_ArrVal_8393 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8392 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8391 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8390 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8389 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (select (let ((.cse2 (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem38#1.base| v_ArrVal_8389))) (let ((.cse1 (select (select .cse2 |c_ULTIMATE.start_main_~user~0#1.base|) .cse3))) (store (store (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_#t~mem38#1.base| v_ArrVal_8390) .cse1 v_ArrVal_8392) (select (select (store .cse2 .cse1 v_ArrVal_8391) |c_ULTIMATE.start_main_~user~0#1.base|) .cse3) v_ArrVal_8393))) |c_ULTIMATE.start_main_~user~0#1.base|) .cse3))) (bvule (bvadd (_ bv20 32) .cse0) (bvadd (_ bv24 32) .cse0)))) (forall ((v_ArrVal_8394 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8393 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8392 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8391 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8390 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8389 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse7 (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem38#1.base| v_ArrVal_8389))) (let ((.cse4 (select (select .cse7 |c_ULTIMATE.start_main_~user~0#1.base|) .cse3))) (let ((.cse6 (store .cse7 .cse4 v_ArrVal_8391))) (let ((.cse5 (select (select .cse6 |c_ULTIMATE.start_main_~user~0#1.base|) .cse3))) (bvule (bvadd (_ bv24 32) (select (select (store (store (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_#t~mem38#1.base| v_ArrVal_8390) .cse4 v_ArrVal_8392) .cse5 v_ArrVal_8393) |c_ULTIMATE.start_main_~user~0#1.base|) .cse3)) (select |c_#length| (select (select (store .cse6 .cse5 v_ArrVal_8394) |c_ULTIMATE.start_main_~user~0#1.base|) .cse3)))))))))) is different from false [2024-11-28 04:40:41,627 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse3 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (let ((.cse0 (select (select |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse3))) (and (forall ((v_ArrVal_8394 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8393 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8392 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8391 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8390 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8389 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse5 (store |c_#memory_$Pointer$#1.base| .cse0 v_ArrVal_8389))) (let ((.cse1 (select (select .cse5 |c_ULTIMATE.start_main_~user~0#1.base|) .cse3))) (let ((.cse4 (store .cse5 .cse1 v_ArrVal_8391))) (let ((.cse2 (select (select .cse4 |c_ULTIMATE.start_main_~user~0#1.base|) .cse3))) (bvule (bvadd (select (select (store (store (store |c_#memory_$Pointer$#1.offset| .cse0 v_ArrVal_8390) .cse1 v_ArrVal_8392) .cse2 v_ArrVal_8393) |c_ULTIMATE.start_main_~user~0#1.base|) .cse3) (_ bv24 32)) (select |c_#length| (select (select (store .cse4 .cse2 v_ArrVal_8394) |c_ULTIMATE.start_main_~user~0#1.base|) .cse3)))))))) (forall ((v_ArrVal_8393 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8392 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8391 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8390 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8389 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse6 (select (select (let ((.cse8 (store |c_#memory_$Pointer$#1.base| .cse0 v_ArrVal_8389))) (let ((.cse7 (select (select .cse8 |c_ULTIMATE.start_main_~user~0#1.base|) .cse3))) (store (store (store |c_#memory_$Pointer$#1.offset| .cse0 v_ArrVal_8390) .cse7 v_ArrVal_8392) (select (select (store .cse8 .cse7 v_ArrVal_8391) |c_ULTIMATE.start_main_~user~0#1.base|) .cse3) v_ArrVal_8393))) |c_ULTIMATE.start_main_~user~0#1.base|) .cse3))) (bvule (bvadd .cse6 (_ bv20 32)) (bvadd .cse6 (_ bv24 32)))))))) is different from false [2024-11-28 04:40:48,866 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse4 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (and (forall ((v_ArrVal_8485 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8393 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8392 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8391 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8390 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8389 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8486 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (select (let ((.cse5 (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem36#1.base| v_ArrVal_8486))) (let ((.cse1 (select (select .cse5 |c_ULTIMATE.start_main_~user~0#1.base|) .cse4))) (let ((.cse3 (store .cse5 .cse1 v_ArrVal_8389))) (let ((.cse2 (select (select .cse3 |c_ULTIMATE.start_main_~user~0#1.base|) .cse4))) (store (store (store (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_#t~mem36#1.base| v_ArrVal_8485) .cse1 v_ArrVal_8390) .cse2 v_ArrVal_8392) (select (select (store .cse3 .cse2 v_ArrVal_8391) |c_ULTIMATE.start_main_~user~0#1.base|) .cse4) v_ArrVal_8393))))) |c_ULTIMATE.start_main_~user~0#1.base|) .cse4))) (bvule (bvadd (_ bv20 32) .cse0) (bvadd (_ bv24 32) .cse0)))) (forall ((v_ArrVal_8485 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8394 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8393 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8392 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8391 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8390 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8389 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8486 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse11 (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem36#1.base| v_ArrVal_8486))) (let ((.cse6 (select (select .cse11 |c_ULTIMATE.start_main_~user~0#1.base|) .cse4))) (let ((.cse10 (store .cse11 .cse6 v_ArrVal_8389))) (let ((.cse7 (select (select .cse10 |c_ULTIMATE.start_main_~user~0#1.base|) .cse4))) (let ((.cse9 (store .cse10 .cse7 v_ArrVal_8391))) (let ((.cse8 (select (select .cse9 |c_ULTIMATE.start_main_~user~0#1.base|) .cse4))) (bvule (bvadd (_ bv24 32) (select (select (store (store (store (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_#t~mem36#1.base| v_ArrVal_8485) .cse6 v_ArrVal_8390) .cse7 v_ArrVal_8392) .cse8 v_ArrVal_8393) |c_ULTIMATE.start_main_~user~0#1.base|) .cse4)) (select |c_#length| (select (select (store .cse9 .cse8 v_ArrVal_8394) |c_ULTIMATE.start_main_~user~0#1.base|) .cse4)))))))))))) is different from false [2024-11-28 04:40:48,935 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1768396011] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:40:48,935 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-28 04:40:48,935 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11] total 13 [2024-11-28 04:40:48,935 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1798147246] [2024-11-28 04:40:48,935 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-28 04:40:48,935 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-28 04:40:48,935 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 04:40:48,936 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-28 04:40:48,936 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=208, Unknown=14, NotChecked=574, Total=870 [2024-11-28 04:40:48,936 INFO L87 Difference]: Start difference. First operand 1423 states and 1687 transitions. Second operand has 14 states, 12 states have (on average 7.666666666666667) internal successors, (92), 14 states have internal predecessors, (92), 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) [2024-11-28 04:45:09,047 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:45:09,048 INFO L93 Difference]: Finished difference Result 1430 states and 1694 transitions. [2024-11-28 04:45:09,048 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-28 04:45:09,048 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 12 states have (on average 7.666666666666667) internal successors, (92), 14 states have internal predecessors, (92), 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 128 [2024-11-28 04:45:09,049 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:45:09,051 INFO L225 Difference]: With dead ends: 1430 [2024-11-28 04:45:09,051 INFO L226 Difference]: Without dead ends: 1430 [2024-11-28 04:45:09,051 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 288 GetRequests, 249 SyntacticMatches, 3 SemanticMatches, 36 ConstructedPredicates, 14 IntricatePredicates, 0 DeprecatedPredicates, 82 ImplicationChecksByTransitivity, 13.6s TimeCoverageRelationStatistics Valid=129, Invalid=465, Unknown=14, NotChecked=798, Total=1406 [2024-11-28 04:45:09,052 INFO L435 NwaCegarLoop]: 787 mSDtfsCounter, 797 mSDsluCounter, 4954 mSDsCounter, 0 mSdLazyCounter, 7564 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 251.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 801 SdHoareTripleChecker+Valid, 5741 SdHoareTripleChecker+Invalid, 7571 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 7564 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 254.6s IncrementalHoareTripleChecker+Time [2024-11-28 04:45:09,052 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [801 Valid, 5741 Invalid, 7571 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [7 Valid, 7564 Invalid, 0 Unknown, 0 Unchecked, 254.6s Time] [2024-11-28 04:45:09,054 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1430 states. [2024-11-28 04:45:09,067 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1430 to 1422. [2024-11-28 04:45:09,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1422 states, 954 states have (on average 1.7180293501048218) internal successors, (1639), 1409 states have internal predecessors, (1639), 24 states have call successors, (24), 5 states have call predecessors, (24), 5 states have return successors, (23), 8 states have call predecessors, (23), 22 states have call successors, (23) [2024-11-28 04:45:09,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1422 states to 1422 states and 1686 transitions. [2024-11-28 04:45:09,072 INFO L78 Accepts]: Start accepts. Automaton has 1422 states and 1686 transitions. Word has length 128 [2024-11-28 04:45:09,072 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:45:09,072 INFO L471 AbstractCegarLoop]: Abstraction has 1422 states and 1686 transitions. [2024-11-28 04:45:09,072 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 12 states have (on average 7.666666666666667) internal successors, (92), 14 states have internal predecessors, (92), 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) [2024-11-28 04:45:09,072 INFO L276 IsEmpty]: Start isEmpty. Operand 1422 states and 1686 transitions. [2024-11-28 04:45:09,073 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2024-11-28 04:45:09,073 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:45:09,074 INFO L218 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, 1, 1, 1] [2024-11-28 04:45:09,099 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27005571-b26c-4ebb-85fe-687e4983ef0a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Ended with exit code 0 [2024-11-28 04:45:09,315 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27005571-b26c-4ebb-85fe-687e4983ef0a/bin/uautomizer-verify-aQ6SnzHsRB/cvc4 --incremental --print-success --lang smt (37)] Ended with exit code 0 [2024-11-28 04:45:09,474 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27005571-b26c-4ebb-85fe-687e4983ef0a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,37 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27005571-b26c-4ebb-85fe-687e4983ef0a/bin/uautomizer-verify-aQ6SnzHsRB/cvc4 --incremental --print-success --lang smt [2024-11-28 04:45:09,475 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr96REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 631 more)] === [2024-11-28 04:45:09,475 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:45:09,475 INFO L85 PathProgramCache]: Analyzing trace with hash 2138882795, now seen corresponding path program 1 times [2024-11-28 04:45:09,476 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 04:45:09,476 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1539203200] [2024-11-28 04:45:09,476 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:45:09,476 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:45:09,476 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27005571-b26c-4ebb-85fe-687e4983ef0a/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:45:09,481 INFO L229 MonitoredProcess]: Starting monitored process 38 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27005571-b26c-4ebb-85fe-687e4983ef0a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:45:09,482 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_27005571-b26c-4ebb-85fe-687e4983ef0a/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Waiting until timeout for monitored process [2024-11-28 04:45:10,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:45:10,520 INFO L256 TraceCheckSpWp]: Trace formula consists of 931 conjuncts, 67 conjuncts are in the unsatisfiable core [2024-11-28 04:45:10,529 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:45:10,605 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2024-11-28 04:45:14,635 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2024-11-28 04:45:14,636 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 [2024-11-28 04:45:15,034 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