./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/uthash-2.0.2/uthash_OAT_nondet_test4-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 6497de01 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01822a34-db31-455f-9afc-c091d347e9f4/bin/uautomizer-verify-LYvppIcaGC/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01822a34-db31-455f-9afc-c091d347e9f4/bin/uautomizer-verify-LYvppIcaGC/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01822a34-db31-455f-9afc-c091d347e9f4/bin/uautomizer-verify-LYvppIcaGC/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01822a34-db31-455f-9afc-c091d347e9f4/bin/uautomizer-verify-LYvppIcaGC/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_OAT_nondet_test4-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01822a34-db31-455f-9afc-c091d347e9f4/bin/uautomizer-verify-LYvppIcaGC/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01822a34-db31-455f-9afc-c091d347e9f4/bin/uautomizer-verify-LYvppIcaGC --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 6c763f0e5b490114d32e3c1ec14f736caee058b985a7ee61f4d14ad6758e2996 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-6497de0 [2024-11-24 01:30:34,724 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-24 01:30:34,820 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01822a34-db31-455f-9afc-c091d347e9f4/bin/uautomizer-verify-LYvppIcaGC/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2024-11-24 01:30:34,826 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-24 01:30:34,830 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-24 01:30:34,864 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-24 01:30:34,866 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-24 01:30:34,866 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-24 01:30:34,867 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-24 01:30:34,867 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-24 01:30:34,868 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-24 01:30:34,868 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-24 01:30:34,869 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-24 01:30:34,869 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-24 01:30:34,869 INFO L153 SettingsManager]: * Use SBE=true [2024-11-24 01:30:34,870 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-24 01:30:34,870 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-24 01:30:34,870 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-24 01:30:34,870 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-24 01:30:34,871 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-24 01:30:34,871 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-11-24 01:30:34,871 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-11-24 01:30:34,871 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-11-24 01:30:34,871 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-24 01:30:34,871 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-24 01:30:34,871 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-24 01:30:34,871 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-24 01:30:34,872 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-24 01:30:34,872 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-24 01:30:34,872 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-24 01:30:34,872 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-24 01:30:34,873 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-24 01:30:34,873 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-24 01:30:34,873 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-24 01:30:34,874 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-24 01:30:34,874 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-24 01:30:34,874 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-24 01:30:34,874 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-24 01:30:34,874 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-24 01:30:34,874 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-24 01:30:34,874 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-24 01:30:34,875 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-24 01:30:34,875 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-24 01:30:34,875 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-24 01:30:34,875 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-24 01:30:34,875 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-24 01:30:34,875 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-24 01:30:34,875 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_01822a34-db31-455f-9afc-c091d347e9f4/bin/uautomizer-verify-LYvppIcaGC 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 -> 6c763f0e5b490114d32e3c1ec14f736caee058b985a7ee61f4d14ad6758e2996 [2024-11-24 01:30:35,211 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-24 01:30:35,219 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-24 01:30:35,222 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-24 01:30:35,224 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-24 01:30:35,224 INFO L274 PluginConnector]: CDTParser initialized [2024-11-24 01:30:35,225 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01822a34-db31-455f-9afc-c091d347e9f4/bin/uautomizer-verify-LYvppIcaGC/../../sv-benchmarks/c/uthash-2.0.2/uthash_OAT_nondet_test4-2.i [2024-11-24 01:30:38,300 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01822a34-db31-455f-9afc-c091d347e9f4/bin/uautomizer-verify-LYvppIcaGC/data/1dcc499ad/b102f058eec14418bd41e36141bc2d71/FLAGde8f72c0f [2024-11-24 01:30:38,740 INFO L384 CDTParser]: Found 1 translation units. [2024-11-24 01:30:38,741 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01822a34-db31-455f-9afc-c091d347e9f4/sv-benchmarks/c/uthash-2.0.2/uthash_OAT_nondet_test4-2.i [2024-11-24 01:30:38,766 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01822a34-db31-455f-9afc-c091d347e9f4/bin/uautomizer-verify-LYvppIcaGC/data/1dcc499ad/b102f058eec14418bd41e36141bc2d71/FLAGde8f72c0f [2024-11-24 01:30:38,872 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01822a34-db31-455f-9afc-c091d347e9f4/bin/uautomizer-verify-LYvppIcaGC/data/1dcc499ad/b102f058eec14418bd41e36141bc2d71 [2024-11-24 01:30:38,875 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-24 01:30:38,876 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-24 01:30:38,877 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-24 01:30:38,877 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-24 01:30:38,881 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-24 01:30:38,881 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 01:30:38" (1/1) ... [2024-11-24 01:30:38,884 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2c0a7f97 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:30:38, skipping insertion in model container [2024-11-24 01:30:38,884 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 01:30:38" (1/1) ... [2024-11-24 01:30:38,927 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-24 01:30:39,373 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-24 01:30:39,409 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-24 01:30:39,413 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-24 01:30:39,417 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-24 01:30:39,427 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-24 01:30:39,476 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-24 01:30:39,482 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-24 01:30:39,486 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-24 01:30:39,491 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-24 01:30:39,503 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-24 01:30:39,504 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-24 01:30:39,507 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-24 01:30:39,508 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-24 01:30:39,509 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-24 01:30:39,510 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-24 01:30:39,513 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-24 01:30:39,521 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-24 01:30:39,533 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) [2024-11-24 01:30:39,534 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@1fe31af9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:30:39, skipping insertion in model container [2024-11-24 01:30:39,534 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-24 01:30:39,535 INFO L186 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2024-11-24 01:30:39,538 INFO L158 Benchmark]: Toolchain (without parser) took 659.49ms. Allocated memory is still 117.4MB. Free memory was 91.5MB in the beginning and 70.6MB in the end (delta: 21.0MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. [2024-11-24 01:30:39,539 INFO L158 Benchmark]: CDTParser took 1.45ms. Allocated memory is still 167.8MB. Free memory is still 103.5MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-24 01:30:39,539 INFO L158 Benchmark]: CACSL2BoogieTranslator took 657.31ms. Allocated memory is still 117.4MB. Free memory was 91.2MB in the beginning and 70.6MB in the end (delta: 20.6MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. [2024-11-24 01:30:39,541 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 1.45ms. Allocated memory is still 167.8MB. Free memory is still 103.5MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 657.31ms. Allocated memory is still 117.4MB. Free memory was 91.2MB in the beginning and 70.6MB 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: 754]: 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_01822a34-db31-455f-9afc-c091d347e9f4/bin/uautomizer-verify-LYvppIcaGC/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01822a34-db31-455f-9afc-c091d347e9f4/bin/uautomizer-verify-LYvppIcaGC/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01822a34-db31-455f-9afc-c091d347e9f4/bin/uautomizer-verify-LYvppIcaGC/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01822a34-db31-455f-9afc-c091d347e9f4/bin/uautomizer-verify-LYvppIcaGC/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_OAT_nondet_test4-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01822a34-db31-455f-9afc-c091d347e9f4/bin/uautomizer-verify-LYvppIcaGC/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01822a34-db31-455f-9afc-c091d347e9f4/bin/uautomizer-verify-LYvppIcaGC --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 6c763f0e5b490114d32e3c1ec14f736caee058b985a7ee61f4d14ad6758e2996 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-6497de0 [2024-11-24 01:30:41,863 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-24 01:30:41,972 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01822a34-db31-455f-9afc-c091d347e9f4/bin/uautomizer-verify-LYvppIcaGC/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2024-11-24 01:30:41,978 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-24 01:30:41,978 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-24 01:30:42,033 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-24 01:30:42,034 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-24 01:30:42,034 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-24 01:30:42,034 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-24 01:30:42,037 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-24 01:30:42,038 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-24 01:30:42,038 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-24 01:30:42,039 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-24 01:30:42,039 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-24 01:30:42,039 INFO L153 SettingsManager]: * Use SBE=true [2024-11-24 01:30:42,040 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-24 01:30:42,040 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-24 01:30:42,040 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-24 01:30:42,040 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-24 01:30:42,040 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-24 01:30:42,040 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-11-24 01:30:42,040 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-11-24 01:30:42,040 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-11-24 01:30:42,040 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-24 01:30:42,041 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-24 01:30:42,041 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2024-11-24 01:30:42,041 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2024-11-24 01:30:42,041 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-24 01:30:42,041 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-24 01:30:42,041 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-24 01:30:42,041 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-24 01:30:42,041 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-24 01:30:42,041 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-24 01:30:42,041 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-24 01:30:42,041 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-24 01:30:42,042 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-24 01:30:42,042 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-24 01:30:42,042 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-24 01:30:42,042 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-24 01:30:42,042 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-24 01:30:42,043 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-24 01:30:42,043 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-24 01:30:42,043 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-24 01:30:42,043 INFO L153 SettingsManager]: * Trace refinement strategy=FOX [2024-11-24 01:30:42,043 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2024-11-24 01:30:42,043 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-24 01:30:42,043 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-24 01:30:42,043 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-24 01:30:42,043 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-24 01:30:42,043 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_01822a34-db31-455f-9afc-c091d347e9f4/bin/uautomizer-verify-LYvppIcaGC 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 -> 6c763f0e5b490114d32e3c1ec14f736caee058b985a7ee61f4d14ad6758e2996 [2024-11-24 01:30:42,378 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-24 01:30:42,386 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-24 01:30:42,388 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-24 01:30:42,390 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-24 01:30:42,390 INFO L274 PluginConnector]: CDTParser initialized [2024-11-24 01:30:42,391 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01822a34-db31-455f-9afc-c091d347e9f4/bin/uautomizer-verify-LYvppIcaGC/../../sv-benchmarks/c/uthash-2.0.2/uthash_OAT_nondet_test4-2.i [2024-11-24 01:30:45,378 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01822a34-db31-455f-9afc-c091d347e9f4/bin/uautomizer-verify-LYvppIcaGC/data/ee764fcfa/81cadf99d03743e198774677626444ed/FLAGfe28205bc [2024-11-24 01:30:45,816 INFO L384 CDTParser]: Found 1 translation units. [2024-11-24 01:30:45,818 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01822a34-db31-455f-9afc-c091d347e9f4/sv-benchmarks/c/uthash-2.0.2/uthash_OAT_nondet_test4-2.i [2024-11-24 01:30:45,842 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01822a34-db31-455f-9afc-c091d347e9f4/bin/uautomizer-verify-LYvppIcaGC/data/ee764fcfa/81cadf99d03743e198774677626444ed/FLAGfe28205bc [2024-11-24 01:30:45,954 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01822a34-db31-455f-9afc-c091d347e9f4/bin/uautomizer-verify-LYvppIcaGC/data/ee764fcfa/81cadf99d03743e198774677626444ed [2024-11-24 01:30:45,956 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-24 01:30:45,959 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-24 01:30:45,962 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-24 01:30:45,962 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-24 01:30:45,968 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-24 01:30:45,969 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 01:30:45" (1/1) ... [2024-11-24 01:30:45,971 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@503e636c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:30:45, skipping insertion in model container [2024-11-24 01:30:45,971 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 01:30:45" (1/1) ... [2024-11-24 01:30:46,034 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-24 01:30:46,437 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-24 01:30:46,482 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-24 01:30:46,490 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-24 01:30:46,500 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-24 01:30:46,512 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-24 01:30:46,556 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-24 01:30:46,559 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-24 01:30:46,566 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-24 01:30:46,572 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-24 01:30:46,583 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-24 01:30:46,584 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-24 01:30:46,586 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-24 01:30:46,588 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-24 01:30:46,589 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-24 01:30:46,589 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-24 01:30:46,594 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-24 01:30:46,600 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-24 01:30:46,614 INFO L197 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2024-11-24 01:30:46,633 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-24 01:30:46,665 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-24 01:30:46,682 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-24 01:30:46,684 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-24 01:30:46,687 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-24 01:30:46,692 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-24 01:30:46,722 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-24 01:30:46,726 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-24 01:30:46,732 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-24 01:30:46,740 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-24 01:30:46,757 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-24 01:30:46,758 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-24 01:30:46,759 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-24 01:30:46,760 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-24 01:30:46,761 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-24 01:30:46,764 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-24 01:30:46,767 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-24 01:30:46,777 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-24 01:30:46,785 INFO L200 MainTranslator]: Completed pre-run [2024-11-24 01:30:46,888 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-24 01:30:46,958 INFO L204 MainTranslator]: Completed translation [2024-11-24 01:30:46,960 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:30:46 WrapperNode [2024-11-24 01:30:46,960 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-24 01:30:46,961 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-24 01:30:46,961 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-24 01:30:46,961 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-24 01:30:46,970 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:30:46" (1/1) ... [2024-11-24 01:30:47,013 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:30:46" (1/1) ... [2024-11-24 01:30:47,108 INFO L138 Inliner]: procedures = 179, calls = 377, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 1272 [2024-11-24 01:30:47,109 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-24 01:30:47,109 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-24 01:30:47,109 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-24 01:30:47,109 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-24 01:30:47,118 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:30:46" (1/1) ... [2024-11-24 01:30:47,118 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:30:46" (1/1) ... [2024-11-24 01:30:47,127 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:30:46" (1/1) ... [2024-11-24 01:30:47,251 INFO L175 MemorySlicer]: Split 357 memory accesses to 2 slices as follows [2, 355]. 99 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 90 writes are split as follows [0, 90]. [2024-11-24 01:30:47,251 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:30:46" (1/1) ... [2024-11-24 01:30:47,251 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:30:46" (1/1) ... [2024-11-24 01:30:47,323 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:30:46" (1/1) ... [2024-11-24 01:30:47,325 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:30:46" (1/1) ... [2024-11-24 01:30:47,337 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:30:46" (1/1) ... [2024-11-24 01:30:47,344 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:30:46" (1/1) ... [2024-11-24 01:30:47,351 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:30:46" (1/1) ... [2024-11-24 01:30:47,368 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-24 01:30:47,371 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-24 01:30:47,371 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-24 01:30:47,372 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-24 01:30:47,372 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:30:46" (1/1) ... [2024-11-24 01:30:47,380 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-24 01:30:47,394 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01822a34-db31-455f-9afc-c091d347e9f4/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 01:30:47,407 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01822a34-db31-455f-9afc-c091d347e9f4/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-24 01:30:47,411 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01822a34-db31-455f-9afc-c091d347e9f4/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-24 01:30:47,439 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#0 [2024-11-24 01:30:47,439 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#1 [2024-11-24 01:30:47,439 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#0 [2024-11-24 01:30:47,439 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#1 [2024-11-24 01:30:47,439 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#0 [2024-11-24 01:30:47,439 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#1 [2024-11-24 01:30:47,439 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#0 [2024-11-24 01:30:47,439 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#1 [2024-11-24 01:30:47,439 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-24 01:30:47,439 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-24 01:30:47,439 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2024-11-24 01:30:47,439 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2024-11-24 01:30:47,439 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2024-11-24 01:30:47,439 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2024-11-24 01:30:47,439 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-24 01:30:47,439 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#0 [2024-11-24 01:30:47,439 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#1 [2024-11-24 01:30:47,439 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2024-11-24 01:30:47,440 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#1 [2024-11-24 01:30:47,440 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-24 01:30:47,440 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-24 01:30:47,673 INFO L234 CfgBuilder]: Building ICFG [2024-11-24 01:30:47,675 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-24 01:30:47,678 WARN L773 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2024-11-24 01:30:47,735 WARN L773 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2024-11-24 01:30:53,600 INFO L? ?]: Removed 1537 outVars from TransFormulas that were not future-live. [2024-11-24 01:30:53,600 INFO L283 CfgBuilder]: Performing block encoding [2024-11-24 01:30:53,657 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-24 01:30:53,662 INFO L312 CfgBuilder]: Removed 39 assume(true) statements. [2024-11-24 01:30:53,662 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 01:30:53 BoogieIcfgContainer [2024-11-24 01:30:53,662 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-24 01:30:53,664 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-24 01:30:53,664 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-24 01:30:53,669 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-24 01:30:53,669 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.11 01:30:45" (1/3) ... [2024-11-24 01:30:53,670 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@575d6996 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 01:30:53, skipping insertion in model container [2024-11-24 01:30:53,670 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:30:46" (2/3) ... [2024-11-24 01:30:53,670 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@575d6996 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 01:30:53, skipping insertion in model container [2024-11-24 01:30:53,671 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 01:30:53" (3/3) ... [2024-11-24 01:30:53,672 INFO L128 eAbstractionObserver]: Analyzing ICFG uthash_OAT_nondet_test4-2.i [2024-11-24 01:30:53,686 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-24 01:30:53,687 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG uthash_OAT_nondet_test4-2.i that has 3 procedures, 1436 locations, 1 initial locations, 41 loop locations, and 733 error locations. [2024-11-24 01:30:53,744 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-24 01:30:53,763 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;@5e07a640, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-24 01:30:53,763 INFO L334 AbstractCegarLoop]: Starting to check reachability of 733 error locations. [2024-11-24 01:30:53,774 INFO L276 IsEmpty]: Start isEmpty. Operand has 1431 states, 696 states have (on average 2.2456896551724137) internal successors, (1563), 1423 states have internal predecessors, (1563), 6 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-11-24 01:30:53,778 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2024-11-24 01:30:53,778 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:30:53,779 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2024-11-24 01:30:53,780 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr732ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 730 more)] === [2024-11-24 01:30:53,785 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:30:53,786 INFO L85 PathProgramCache]: Analyzing trace with hash 1481848, now seen corresponding path program 1 times [2024-11-24 01:30:53,795 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-24 01:30:53,795 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1406866950] [2024-11-24 01:30:53,795 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:30:53,796 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:30:53,798 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01822a34-db31-455f-9afc-c091d347e9f4/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 01:30:53,803 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01822a34-db31-455f-9afc-c091d347e9f4/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 01:30:53,808 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01822a34-db31-455f-9afc-c091d347e9f4/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-24 01:30:54,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:30:54,019 INFO L256 TraceCheckSpWp]: Trace formula consists of 19 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-24 01:30:54,024 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 01:30:54,058 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 01:30:54,059 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-24 01:30:54,059 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-24 01:30:54,059 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1406866950] [2024-11-24 01:30:54,060 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1406866950] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:30:54,060 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 01:30:54,060 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-24 01:30:54,062 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [619455771] [2024-11-24 01:30:54,066 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:30:54,069 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-24 01:30:54,070 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-24 01:30:54,094 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-24 01:30:54,095 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-24 01:30:54,100 INFO L87 Difference]: Start difference. First operand has 1431 states, 696 states have (on average 2.2456896551724137) internal successors, (1563), 1423 states have internal predecessors, (1563), 6 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) Second operand has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:30:56,746 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:30:56,747 INFO L93 Difference]: Finished difference Result 1622 states and 1701 transitions. [2024-11-24 01:30:56,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-24 01:30:56,750 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4 [2024-11-24 01:30:56,750 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:30:56,765 INFO L225 Difference]: With dead ends: 1622 [2024-11-24 01:30:56,765 INFO L226 Difference]: Without dead ends: 1618 [2024-11-24 01:30:56,766 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-24 01:30:56,769 INFO L435 NwaCegarLoop]: 1382 mSDtfsCounter, 220 mSDsluCounter, 754 mSDsCounter, 0 mSdLazyCounter, 826 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 220 SdHoareTripleChecker+Valid, 2136 SdHoareTripleChecker+Invalid, 826 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 826 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2024-11-24 01:30:56,770 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [220 Valid, 2136 Invalid, 826 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 826 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2024-11-24 01:30:56,787 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1618 states. [2024-11-24 01:30:56,852 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1618 to 1429. [2024-11-24 01:30:56,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1429 states, 705 states have (on average 2.120567375886525) internal successors, (1495), 1421 states have internal predecessors, (1495), 6 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-11-24 01:30:56,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1429 states to 1429 states and 1507 transitions. [2024-11-24 01:30:56,865 INFO L78 Accepts]: Start accepts. Automaton has 1429 states and 1507 transitions. Word has length 4 [2024-11-24 01:30:56,865 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:30:56,865 INFO L471 AbstractCegarLoop]: Abstraction has 1429 states and 1507 transitions. [2024-11-24 01:30:56,865 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:30:56,865 INFO L276 IsEmpty]: Start isEmpty. Operand 1429 states and 1507 transitions. [2024-11-24 01:30:56,866 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2024-11-24 01:30:56,866 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:30:56,866 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-11-24 01:30:56,876 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01822a34-db31-455f-9afc-c091d347e9f4/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-24 01:30:57,070 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01822a34-db31-455f-9afc-c091d347e9f4/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:30:57,070 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr620REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 730 more)] === [2024-11-24 01:30:57,071 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:30:57,071 INFO L85 PathProgramCache]: Analyzing trace with hash 1136454119, now seen corresponding path program 1 times [2024-11-24 01:30:57,071 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-24 01:30:57,071 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1744903755] [2024-11-24 01:30:57,071 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:30:57,071 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:30:57,071 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01822a34-db31-455f-9afc-c091d347e9f4/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 01:30:57,073 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01822a34-db31-455f-9afc-c091d347e9f4/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 01:30:57,075 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01822a34-db31-455f-9afc-c091d347e9f4/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-24 01:30:57,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:30:57,231 INFO L256 TraceCheckSpWp]: Trace formula consists of 23 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-24 01:30:57,233 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 01:30:57,285 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 01:30:57,286 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-24 01:30:57,286 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-24 01:30:57,286 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1744903755] [2024-11-24 01:30:57,286 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1744903755] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:30:57,286 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 01:30:57,286 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-24 01:30:57,286 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1127051354] [2024-11-24 01:30:57,287 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:30:57,287 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-24 01:30:57,288 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-24 01:30:57,288 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-24 01:30:57,288 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-24 01:30:57,288 INFO L87 Difference]: Start difference. First operand 1429 states and 1507 transitions. Second operand has 4 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:30:58,441 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:30:58,442 INFO L93 Difference]: Finished difference Result 2139 states and 2246 transitions. [2024-11-24 01:30:58,442 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-24 01:30:58,443 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2024-11-24 01:30:58,443 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:30:58,451 INFO L225 Difference]: With dead ends: 2139 [2024-11-24 01:30:58,451 INFO L226 Difference]: Without dead ends: 2139 [2024-11-24 01:30:58,451 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-24 01:30:58,453 INFO L435 NwaCegarLoop]: 1472 mSDtfsCounter, 752 mSDsluCounter, 2594 mSDsCounter, 0 mSdLazyCounter, 357 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 755 SdHoareTripleChecker+Valid, 4066 SdHoareTripleChecker+Invalid, 358 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 357 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-11-24 01:30:58,453 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [755 Valid, 4066 Invalid, 358 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 357 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-11-24 01:30:58,458 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2139 states. [2024-11-24 01:30:58,503 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2139 to 1780. [2024-11-24 01:30:58,508 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1780 states, 1056 states have (on average 2.109848484848485) internal successors, (2228), 1769 states have internal predecessors, (2228), 9 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2024-11-24 01:30:58,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1780 states to 1780 states and 2246 transitions. [2024-11-24 01:30:58,517 INFO L78 Accepts]: Start accepts. Automaton has 1780 states and 2246 transitions. Word has length 7 [2024-11-24 01:30:58,517 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:30:58,517 INFO L471 AbstractCegarLoop]: Abstraction has 1780 states and 2246 transitions. [2024-11-24 01:30:58,517 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:30:58,517 INFO L276 IsEmpty]: Start isEmpty. Operand 1780 states and 2246 transitions. [2024-11-24 01:30:58,518 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2024-11-24 01:30:58,519 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:30:58,519 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-11-24 01:30:58,531 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01822a34-db31-455f-9afc-c091d347e9f4/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-24 01:30:58,723 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01822a34-db31-455f-9afc-c091d347e9f4/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:30:58,723 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 730 more)] === [2024-11-24 01:30:58,724 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:30:58,727 INFO L85 PathProgramCache]: Analyzing trace with hash 1134636893, now seen corresponding path program 1 times [2024-11-24 01:30:58,728 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-24 01:30:58,728 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1708452412] [2024-11-24 01:30:58,728 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:30:58,728 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:30:58,728 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01822a34-db31-455f-9afc-c091d347e9f4/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 01:30:58,730 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01822a34-db31-455f-9afc-c091d347e9f4/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 01:30:58,731 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01822a34-db31-455f-9afc-c091d347e9f4/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-24 01:30:58,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:30:58,878 INFO L256 TraceCheckSpWp]: Trace formula consists of 29 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-24 01:30:58,880 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 01:30:58,914 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 [2024-11-24 01:30:58,927 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 01:30:58,927 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-24 01:30:58,928 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-24 01:30:58,928 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1708452412] [2024-11-24 01:30:58,928 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1708452412] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:30:58,928 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 01:30:58,928 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-24 01:30:58,928 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1531313357] [2024-11-24 01:30:58,928 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:30:58,929 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-24 01:30:58,929 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-24 01:30:58,929 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-24 01:30:58,929 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-24 01:30:58,929 INFO L87 Difference]: Start difference. First operand 1780 states and 2246 transitions. Second operand has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:31:01,511 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:31:01,511 INFO L93 Difference]: Finished difference Result 1686 states and 2102 transitions. [2024-11-24 01:31:01,512 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-24 01:31:01,512 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2024-11-24 01:31:01,512 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:31:01,519 INFO L225 Difference]: With dead ends: 1686 [2024-11-24 01:31:01,519 INFO L226 Difference]: Without dead ends: 1686 [2024-11-24 01:31:01,519 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-24 01:31:01,520 INFO L435 NwaCegarLoop]: 771 mSDtfsCounter, 1030 mSDsluCounter, 111 mSDsCounter, 0 mSdLazyCounter, 840 mSolverCounterSat, 102 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1036 SdHoareTripleChecker+Valid, 882 SdHoareTripleChecker+Invalid, 942 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 102 IncrementalHoareTripleChecker+Valid, 840 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2024-11-24 01:31:01,520 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1036 Valid, 882 Invalid, 942 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [102 Valid, 840 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2024-11-24 01:31:01,524 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1686 states. [2024-11-24 01:31:01,550 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1686 to 1686. [2024-11-24 01:31:01,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1686 states, 1056 states have (on average 1.9734848484848484) internal successors, (2084), 1675 states have internal predecessors, (2084), 9 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2024-11-24 01:31:01,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1686 states to 1686 states and 2102 transitions. [2024-11-24 01:31:01,560 INFO L78 Accepts]: Start accepts. Automaton has 1686 states and 2102 transitions. Word has length 7 [2024-11-24 01:31:01,560 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:31:01,561 INFO L471 AbstractCegarLoop]: Abstraction has 1686 states and 2102 transitions. [2024-11-24 01:31:01,561 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:31:01,561 INFO L276 IsEmpty]: Start isEmpty. Operand 1686 states and 2102 transitions. [2024-11-24 01:31:01,561 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2024-11-24 01:31:01,561 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:31:01,562 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-11-24 01:31:01,573 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01822a34-db31-455f-9afc-c091d347e9f4/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-24 01:31:01,762 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01822a34-db31-455f-9afc-c091d347e9f4/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:31:01,762 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 730 more)] === [2024-11-24 01:31:01,763 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:31:01,763 INFO L85 PathProgramCache]: Analyzing trace with hash 1134636894, now seen corresponding path program 1 times [2024-11-24 01:31:01,763 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-24 01:31:01,763 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1660097534] [2024-11-24 01:31:01,763 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:31:01,763 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:31:01,763 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01822a34-db31-455f-9afc-c091d347e9f4/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 01:31:01,766 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01822a34-db31-455f-9afc-c091d347e9f4/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 01:31:01,767 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01822a34-db31-455f-9afc-c091d347e9f4/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-24 01:31:01,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:31:01,900 INFO L256 TraceCheckSpWp]: Trace formula consists of 29 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-24 01:31:01,902 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 01:31:01,914 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 [2024-11-24 01:31:01,938 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 01:31:01,938 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-24 01:31:01,938 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-24 01:31:01,939 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1660097534] [2024-11-24 01:31:01,939 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1660097534] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:31:01,939 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 01:31:01,939 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-24 01:31:01,939 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [486771597] [2024-11-24 01:31:01,939 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:31:01,939 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-24 01:31:01,940 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-24 01:31:01,940 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-24 01:31:01,940 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-24 01:31:01,940 INFO L87 Difference]: Start difference. First operand 1686 states and 2102 transitions. Second operand has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:31:05,351 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:31:05,351 INFO L93 Difference]: Finished difference Result 2129 states and 2652 transitions. [2024-11-24 01:31:05,351 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-24 01:31:05,352 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2024-11-24 01:31:05,352 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:31:05,359 INFO L225 Difference]: With dead ends: 2129 [2024-11-24 01:31:05,359 INFO L226 Difference]: Without dead ends: 2129 [2024-11-24 01:31:05,360 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-24 01:31:05,360 INFO L435 NwaCegarLoop]: 1223 mSDtfsCounter, 523 mSDsluCounter, 549 mSDsCounter, 0 mSdLazyCounter, 883 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 523 SdHoareTripleChecker+Valid, 1772 SdHoareTripleChecker+Invalid, 908 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 883 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2024-11-24 01:31:05,361 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [523 Valid, 1772 Invalid, 908 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 883 Invalid, 0 Unknown, 0 Unchecked, 3.4s Time] [2024-11-24 01:31:05,364 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2129 states. [2024-11-24 01:31:05,395 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2129 to 1973. [2024-11-24 01:31:05,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1973 states, 1353 states have (on average 1.9283074648928307) internal successors, (2609), 1962 states have internal predecessors, (2609), 9 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2024-11-24 01:31:05,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1973 states to 1973 states and 2627 transitions. [2024-11-24 01:31:05,410 INFO L78 Accepts]: Start accepts. Automaton has 1973 states and 2627 transitions. Word has length 7 [2024-11-24 01:31:05,410 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:31:05,410 INFO L471 AbstractCegarLoop]: Abstraction has 1973 states and 2627 transitions. [2024-11-24 01:31:05,410 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:31:05,410 INFO L276 IsEmpty]: Start isEmpty. Operand 1973 states and 2627 transitions. [2024-11-24 01:31:05,410 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2024-11-24 01:31:05,411 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:31:05,411 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 01:31:05,421 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01822a34-db31-455f-9afc-c091d347e9f4/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-24 01:31:05,611 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01822a34-db31-455f-9afc-c091d347e9f4/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:31:05,611 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr627REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 730 more)] === [2024-11-24 01:31:05,612 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:31:05,612 INFO L85 PathProgramCache]: Analyzing trace with hash 1210869708, now seen corresponding path program 1 times [2024-11-24 01:31:05,612 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-24 01:31:05,612 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1441043348] [2024-11-24 01:31:05,612 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:31:05,612 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:31:05,612 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01822a34-db31-455f-9afc-c091d347e9f4/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 01:31:05,614 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01822a34-db31-455f-9afc-c091d347e9f4/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 01:31:05,615 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01822a34-db31-455f-9afc-c091d347e9f4/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-24 01:31:05,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:31:05,745 INFO L256 TraceCheckSpWp]: Trace formula consists of 27 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-24 01:31:05,746 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 01:31:05,811 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 01:31:05,812 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-24 01:31:05,812 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-24 01:31:05,812 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1441043348] [2024-11-24 01:31:05,812 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1441043348] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:31:05,812 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 01:31:05,812 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-24 01:31:05,812 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1666529460] [2024-11-24 01:31:05,813 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:31:05,813 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-24 01:31:05,813 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-24 01:31:05,813 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-24 01:31:05,814 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-24 01:31:05,814 INFO L87 Difference]: Start difference. First operand 1973 states and 2627 transitions. Second operand has 3 states, 3 states have (on average 3.0) 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) [2024-11-24 01:31:06,020 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:31:06,020 INFO L93 Difference]: Finished difference Result 2049 states and 2567 transitions. [2024-11-24 01:31:06,020 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-24 01:31:06,021 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.0) 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 [2024-11-24 01:31:06,021 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:31:06,026 INFO L225 Difference]: With dead ends: 2049 [2024-11-24 01:31:06,026 INFO L226 Difference]: Without dead ends: 2049 [2024-11-24 01:31:06,026 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 [2024-11-24 01:31:06,027 INFO L435 NwaCegarLoop]: 1440 mSDtfsCounter, 316 mSDsluCounter, 1304 mSDsCounter, 0 mSdLazyCounter, 104 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 316 SdHoareTripleChecker+Valid, 2744 SdHoareTripleChecker+Invalid, 107 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 104 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-24 01:31:06,027 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [316 Valid, 2744 Invalid, 107 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 104 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-24 01:31:06,030 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2049 states. [2024-11-24 01:31:06,056 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2049 to 1833. [2024-11-24 01:31:06,059 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1833 states, 1213 states have (on average 1.9373454245671888) internal successors, (2350), 1822 states have internal predecessors, (2350), 9 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2024-11-24 01:31:06,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1833 states to 1833 states and 2368 transitions. [2024-11-24 01:31:06,064 INFO L78 Accepts]: Start accepts. Automaton has 1833 states and 2368 transitions. Word has length 9 [2024-11-24 01:31:06,064 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:31:06,064 INFO L471 AbstractCegarLoop]: Abstraction has 1833 states and 2368 transitions. [2024-11-24 01:31:06,065 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.0) 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) [2024-11-24 01:31:06,065 INFO L276 IsEmpty]: Start isEmpty. Operand 1833 states and 2368 transitions. [2024-11-24 01:31:06,065 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2024-11-24 01:31:06,065 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:31:06,065 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 01:31:06,074 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01822a34-db31-455f-9afc-c091d347e9f4/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-24 01:31:06,265 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01822a34-db31-455f-9afc-c091d347e9f4/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:31:06,266 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr629REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 730 more)] === [2024-11-24 01:31:06,266 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:31:06,266 INFO L85 PathProgramCache]: Analyzing trace with hash -403271100, now seen corresponding path program 1 times [2024-11-24 01:31:06,266 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-24 01:31:06,266 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [352141079] [2024-11-24 01:31:06,266 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:31:06,266 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:31:06,266 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01822a34-db31-455f-9afc-c091d347e9f4/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 01:31:06,268 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01822a34-db31-455f-9afc-c091d347e9f4/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 01:31:06,271 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01822a34-db31-455f-9afc-c091d347e9f4/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-24 01:31:06,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:31:06,402 INFO L256 TraceCheckSpWp]: Trace formula consists of 35 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-24 01:31:06,404 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 01:31:06,503 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 01:31:06,503 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-24 01:31:06,503 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-24 01:31:06,504 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [352141079] [2024-11-24 01:31:06,504 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [352141079] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:31:06,504 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 01:31:06,504 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-24 01:31:06,504 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [248477998] [2024-11-24 01:31:06,504 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:31:06,504 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-24 01:31:06,504 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-24 01:31:06,504 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-24 01:31:06,504 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-24 01:31:06,505 INFO L87 Difference]: Start difference. First operand 1833 states and 2368 transitions. Second operand has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:31:07,684 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:31:07,685 INFO L93 Difference]: Finished difference Result 2049 states and 2566 transitions. [2024-11-24 01:31:07,685 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-24 01:31:07,686 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2024-11-24 01:31:07,686 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:31:07,691 INFO L225 Difference]: With dead ends: 2049 [2024-11-24 01:31:07,691 INFO L226 Difference]: Without dead ends: 2043 [2024-11-24 01:31:07,692 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-24 01:31:07,692 INFO L435 NwaCegarLoop]: 1440 mSDtfsCounter, 318 mSDsluCounter, 2526 mSDsCounter, 0 mSdLazyCounter, 355 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 318 SdHoareTripleChecker+Valid, 3966 SdHoareTripleChecker+Invalid, 357 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 355 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-11-24 01:31:07,693 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [318 Valid, 3966 Invalid, 357 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 355 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-11-24 01:31:07,696 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2043 states. [2024-11-24 01:31:07,721 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2043 to 1827. [2024-11-24 01:31:07,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1827 states, 1207 states have (on average 1.9411764705882353) internal successors, (2343), 1816 states have internal predecessors, (2343), 9 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2024-11-24 01:31:07,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1827 states to 1827 states and 2361 transitions. [2024-11-24 01:31:07,729 INFO L78 Accepts]: Start accepts. Automaton has 1827 states and 2361 transitions. Word has length 12 [2024-11-24 01:31:07,729 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:31:07,729 INFO L471 AbstractCegarLoop]: Abstraction has 1827 states and 2361 transitions. [2024-11-24 01:31:07,730 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:31:07,730 INFO L276 IsEmpty]: Start isEmpty. Operand 1827 states and 2361 transitions. [2024-11-24 01:31:07,730 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2024-11-24 01:31:07,730 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:31:07,730 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 01:31:07,739 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01822a34-db31-455f-9afc-c091d347e9f4/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-24 01:31:07,930 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01822a34-db31-455f-9afc-c091d347e9f4/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:31:07,931 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 730 more)] === [2024-11-24 01:31:07,931 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:31:07,931 INFO L85 PathProgramCache]: Analyzing trace with hash -567156950, now seen corresponding path program 1 times [2024-11-24 01:31:07,932 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-24 01:31:07,932 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [747181156] [2024-11-24 01:31:07,932 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:31:07,932 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:31:07,932 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01822a34-db31-455f-9afc-c091d347e9f4/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 01:31:07,935 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01822a34-db31-455f-9afc-c091d347e9f4/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 01:31:07,939 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01822a34-db31-455f-9afc-c091d347e9f4/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-24 01:31:08,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:31:08,099 INFO L256 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-24 01:31:08,101 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 01:31:08,110 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 [2024-11-24 01:31:08,150 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 01:31:08,151 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-24 01:31:08,151 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-24 01:31:08,151 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [747181156] [2024-11-24 01:31:08,151 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [747181156] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:31:08,151 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 01:31:08,151 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-24 01:31:08,151 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [564996919] [2024-11-24 01:31:08,151 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:31:08,152 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-24 01:31:08,152 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-24 01:31:08,152 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-24 01:31:08,152 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-24 01:31:08,152 INFO L87 Difference]: Start difference. First operand 1827 states and 2361 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) [2024-11-24 01:31:11,444 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:31:11,445 INFO L93 Difference]: Finished difference Result 1812 states and 2323 transitions. [2024-11-24 01:31:11,445 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-24 01:31:11,445 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 [2024-11-24 01:31:11,446 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:31:11,451 INFO L225 Difference]: With dead ends: 1812 [2024-11-24 01:31:11,451 INFO L226 Difference]: Without dead ends: 1812 [2024-11-24 01:31:11,451 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 [2024-11-24 01:31:11,457 INFO L435 NwaCegarLoop]: 745 mSDtfsCounter, 1081 mSDsluCounter, 679 mSDsCounter, 0 mSdLazyCounter, 1527 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1087 SdHoareTripleChecker+Valid, 1424 SdHoareTripleChecker+Invalid, 1559 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 1527 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2024-11-24 01:31:11,458 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1087 Valid, 1424 Invalid, 1559 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 1527 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time] [2024-11-24 01:31:11,465 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1812 states. [2024-11-24 01:31:11,513 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1812 to 1804. [2024-11-24 01:31:11,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1804 states, 1207 states have (on average 1.9030654515327257) internal successors, (2297), 1793 states have internal predecessors, (2297), 9 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2024-11-24 01:31:11,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1804 states to 1804 states and 2315 transitions. [2024-11-24 01:31:11,523 INFO L78 Accepts]: Start accepts. Automaton has 1804 states and 2315 transitions. Word has length 13 [2024-11-24 01:31:11,524 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:31:11,524 INFO L471 AbstractCegarLoop]: Abstraction has 1804 states and 2315 transitions. [2024-11-24 01:31:11,524 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) [2024-11-24 01:31:11,524 INFO L276 IsEmpty]: Start isEmpty. Operand 1804 states and 2315 transitions. [2024-11-24 01:31:11,524 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2024-11-24 01:31:11,524 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:31:11,525 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 01:31:11,535 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01822a34-db31-455f-9afc-c091d347e9f4/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2024-11-24 01:31:11,725 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01822a34-db31-455f-9afc-c091d347e9f4/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:31:11,725 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 730 more)] === [2024-11-24 01:31:11,726 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:31:11,726 INFO L85 PathProgramCache]: Analyzing trace with hash -567156949, now seen corresponding path program 1 times [2024-11-24 01:31:11,726 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-24 01:31:11,726 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1104722563] [2024-11-24 01:31:11,726 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:31:11,726 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:31:11,726 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01822a34-db31-455f-9afc-c091d347e9f4/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 01:31:11,728 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01822a34-db31-455f-9afc-c091d347e9f4/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 01:31:11,729 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01822a34-db31-455f-9afc-c091d347e9f4/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-24 01:31:11,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:31:11,894 INFO L256 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-24 01:31:11,896 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 01:31:11,906 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2024-11-24 01:31:11,995 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 01:31:11,995 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-24 01:31:11,995 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-24 01:31:11,996 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1104722563] [2024-11-24 01:31:11,996 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1104722563] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:31:11,996 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 01:31:11,996 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-24 01:31:11,996 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1691059821] [2024-11-24 01:31:11,996 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:31:11,996 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-24 01:31:11,996 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-24 01:31:11,996 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-24 01:31:11,997 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-24 01:31:11,997 INFO L87 Difference]: Start difference. First operand 1804 states and 2315 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) [2024-11-24 01:31:16,869 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:31:16,869 INFO L93 Difference]: Finished difference Result 2090 states and 2492 transitions. [2024-11-24 01:31:16,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-24 01:31:16,870 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 [2024-11-24 01:31:16,870 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:31:16,874 INFO L225 Difference]: With dead ends: 2090 [2024-11-24 01:31:16,874 INFO L226 Difference]: Without dead ends: 2090 [2024-11-24 01:31:16,874 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 [2024-11-24 01:31:16,874 INFO L435 NwaCegarLoop]: 1421 mSDtfsCounter, 648 mSDsluCounter, 1369 mSDsCounter, 0 mSdLazyCounter, 1725 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 648 SdHoareTripleChecker+Valid, 2790 SdHoareTripleChecker+Invalid, 1747 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 1725 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.8s IncrementalHoareTripleChecker+Time [2024-11-24 01:31:16,874 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [648 Valid, 2790 Invalid, 1747 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 1725 Invalid, 0 Unknown, 0 Unchecked, 4.8s Time] [2024-11-24 01:31:16,877 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2090 states. [2024-11-24 01:31:16,900 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2090 to 1920. [2024-11-24 01:31:16,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1920 states, 1323 states have (on average 1.8420256991685564) internal successors, (2437), 1909 states have internal predecessors, (2437), 9 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2024-11-24 01:31:16,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1920 states to 1920 states and 2455 transitions. [2024-11-24 01:31:16,908 INFO L78 Accepts]: Start accepts. Automaton has 1920 states and 2455 transitions. Word has length 13 [2024-11-24 01:31:16,909 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:31:16,909 INFO L471 AbstractCegarLoop]: Abstraction has 1920 states and 2455 transitions. [2024-11-24 01:31:16,909 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) [2024-11-24 01:31:16,909 INFO L276 IsEmpty]: Start isEmpty. Operand 1920 states and 2455 transitions. [2024-11-24 01:31:16,911 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2024-11-24 01:31:16,911 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:31:16,911 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] [2024-11-24 01:31:16,921 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01822a34-db31-455f-9afc-c091d347e9f4/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-11-24 01:31:17,111 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01822a34-db31-455f-9afc-c091d347e9f4/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:31:17,112 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 730 more)] === [2024-11-24 01:31:17,112 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:31:17,112 INFO L85 PathProgramCache]: Analyzing trace with hash -136933571, now seen corresponding path program 1 times [2024-11-24 01:31:17,113 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-24 01:31:17,113 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [226484248] [2024-11-24 01:31:17,113 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:31:17,113 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:31:17,113 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01822a34-db31-455f-9afc-c091d347e9f4/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 01:31:17,115 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01822a34-db31-455f-9afc-c091d347e9f4/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 01:31:17,116 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01822a34-db31-455f-9afc-c091d347e9f4/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-24 01:31:17,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:31:17,343 INFO L256 TraceCheckSpWp]: Trace formula consists of 153 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-24 01:31:17,345 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 01:31:17,358 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 [2024-11-24 01:31:17,596 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 01:31:17,597 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-24 01:31:18,135 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 01:31:18,135 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-24 01:31:18,135 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [226484248] [2024-11-24 01:31:18,135 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [226484248] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-24 01:31:18,135 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-24 01:31:18,135 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 7 [2024-11-24 01:31:18,136 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [999564135] [2024-11-24 01:31:18,136 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-24 01:31:18,136 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-24 01:31:18,136 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-24 01:31:18,137 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-24 01:31:18,137 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-11-24 01:31:18,137 INFO L87 Difference]: Start difference. First operand 1920 states and 2455 transitions. Second operand has 8 states, 7 states have (on average 8.571428571428571) internal successors, (60), 8 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:31:31,192 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:31:31,192 INFO L93 Difference]: Finished difference Result 2483 states and 3028 transitions. [2024-11-24 01:31:31,194 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-24 01:31:31,194 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 8.571428571428571) internal successors, (60), 8 states have internal predecessors, (60), 0 states have call successors, (0), 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 32 [2024-11-24 01:31:31,194 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:31:31,200 INFO L225 Difference]: With dead ends: 2483 [2024-11-24 01:31:31,200 INFO L226 Difference]: Without dead ends: 2483 [2024-11-24 01:31:31,200 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=48, Invalid=84, Unknown=0, NotChecked=0, Total=132 [2024-11-24 01:31:31,201 INFO L435 NwaCegarLoop]: 1463 mSDtfsCounter, 2185 mSDsluCounter, 2323 mSDsCounter, 0 mSdLazyCounter, 2770 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2187 SdHoareTripleChecker+Valid, 3786 SdHoareTripleChecker+Invalid, 2798 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 2770 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.8s IncrementalHoareTripleChecker+Time [2024-11-24 01:31:31,201 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2187 Valid, 3786 Invalid, 2798 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 2770 Invalid, 0 Unknown, 0 Unchecked, 12.8s Time] [2024-11-24 01:31:31,204 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2483 states. [2024-11-24 01:31:31,238 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2483 to 2086. [2024-11-24 01:31:31,241 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2086 states, 1489 states have (on average 1.793821356615178) internal successors, (2671), 2075 states have internal predecessors, (2671), 9 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2024-11-24 01:31:31,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2086 states to 2086 states and 2689 transitions. [2024-11-24 01:31:31,245 INFO L78 Accepts]: Start accepts. Automaton has 2086 states and 2689 transitions. Word has length 32 [2024-11-24 01:31:31,246 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:31:31,246 INFO L471 AbstractCegarLoop]: Abstraction has 2086 states and 2689 transitions. [2024-11-24 01:31:31,246 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 8.571428571428571) internal successors, (60), 8 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:31:31,246 INFO L276 IsEmpty]: Start isEmpty. Operand 2086 states and 2689 transitions. [2024-11-24 01:31:31,247 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2024-11-24 01:31:31,247 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:31:31,247 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] [2024-11-24 01:31:31,260 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01822a34-db31-455f-9afc-c091d347e9f4/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2024-11-24 01:31:31,452 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01822a34-db31-455f-9afc-c091d347e9f4/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:31:31,452 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr61REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 730 more)] === [2024-11-24 01:31:31,453 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:31:31,453 INFO L85 PathProgramCache]: Analyzing trace with hash -730835680, now seen corresponding path program 1 times [2024-11-24 01:31:31,453 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-24 01:31:31,453 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [480526091] [2024-11-24 01:31:31,453 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:31:31,454 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:31:31,454 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01822a34-db31-455f-9afc-c091d347e9f4/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 01:31:31,461 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01822a34-db31-455f-9afc-c091d347e9f4/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 01:31:31,463 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01822a34-db31-455f-9afc-c091d347e9f4/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-24 01:31:31,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:31:31,712 INFO L256 TraceCheckSpWp]: Trace formula consists of 206 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-24 01:31:31,715 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 01:31:31,780 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 01:31:31,780 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-24 01:31:31,781 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-24 01:31:31,781 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [480526091] [2024-11-24 01:31:31,781 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [480526091] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:31:31,781 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 01:31:31,781 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-24 01:31:31,784 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1273497981] [2024-11-24 01:31:31,785 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:31:31,785 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-24 01:31:31,785 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-24 01:31:31,785 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-24 01:31:31,785 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-24 01:31:31,785 INFO L87 Difference]: Start difference. First operand 2086 states and 2689 transitions. Second operand has 4 states, 4 states have (on average 12.0) internal successors, (48), 4 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:31:31,875 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:31:31,875 INFO L93 Difference]: Finished difference Result 1771 states and 2249 transitions. [2024-11-24 01:31:31,875 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-24 01:31:31,876 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.0) internal successors, (48), 4 states have internal predecessors, (48), 0 states have call successors, (0), 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 48 [2024-11-24 01:31:31,876 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:31:31,880 INFO L225 Difference]: With dead ends: 1771 [2024-11-24 01:31:31,880 INFO L226 Difference]: Without dead ends: 1771 [2024-11-24 01:31:31,880 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-24 01:31:31,881 INFO L435 NwaCegarLoop]: 1286 mSDtfsCounter, 56 mSDsluCounter, 2499 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56 SdHoareTripleChecker+Valid, 3785 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 [2024-11-24 01:31:31,881 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [56 Valid, 3785 Invalid, 77 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-24 01:31:31,882 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1771 states. [2024-11-24 01:31:31,904 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1771 to 1769. [2024-11-24 01:31:31,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1769 states, 1195 states have (on average 1.8652719665271966) internal successors, (2229), 1758 states have internal predecessors, (2229), 9 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2024-11-24 01:31:31,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1769 states to 1769 states and 2247 transitions. [2024-11-24 01:31:31,910 INFO L78 Accepts]: Start accepts. Automaton has 1769 states and 2247 transitions. Word has length 48 [2024-11-24 01:31:31,910 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:31:31,910 INFO L471 AbstractCegarLoop]: Abstraction has 1769 states and 2247 transitions. [2024-11-24 01:31:31,910 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.0) internal successors, (48), 4 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:31:31,910 INFO L276 IsEmpty]: Start isEmpty. Operand 1769 states and 2247 transitions. [2024-11-24 01:31:31,911 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2024-11-24 01:31:31,911 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:31:31,911 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] [2024-11-24 01:31:31,923 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01822a34-db31-455f-9afc-c091d347e9f4/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-11-24 01:31:32,112 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01822a34-db31-455f-9afc-c091d347e9f4/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:31:32,112 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr61REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 730 more)] === [2024-11-24 01:31:32,113 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:31:32,113 INFO L85 PathProgramCache]: Analyzing trace with hash -2042360492, now seen corresponding path program 1 times [2024-11-24 01:31:32,113 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-24 01:31:32,113 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1528116094] [2024-11-24 01:31:32,113 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:31:32,114 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:31:32,114 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01822a34-db31-455f-9afc-c091d347e9f4/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 01:31:32,116 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01822a34-db31-455f-9afc-c091d347e9f4/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 01:31:32,119 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01822a34-db31-455f-9afc-c091d347e9f4/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-24 01:31:32,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:31:32,388 INFO L256 TraceCheckSpWp]: Trace formula consists of 230 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-24 01:31:32,391 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 01:31:32,403 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 [2024-11-24 01:31:33,023 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-24 01:31:33,025 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 [2024-11-24 01:31:33,047 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2024-11-24 01:31:33,047 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 [2024-11-24 01:31:33,055 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 01:31:33,056 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-24 01:31:33,056 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-24 01:31:33,057 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1528116094] [2024-11-24 01:31:33,057 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1528116094] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:31:33,057 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 01:31:33,057 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-24 01:31:33,057 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [519088414] [2024-11-24 01:31:33,057 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:31:33,057 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-24 01:31:33,058 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-24 01:31:33,058 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-24 01:31:33,058 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-24 01:31:33,058 INFO L87 Difference]: Start difference. First operand 1769 states and 2247 transitions. Second operand has 5 states, 4 states have (on average 14.0) internal successors, (56), 5 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:31:36,776 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:31:36,776 INFO L93 Difference]: Finished difference Result 1685 states and 2122 transitions. [2024-11-24 01:31:36,776 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-24 01:31:36,777 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 14.0) internal successors, (56), 5 states have internal predecessors, (56), 0 states have call successors, (0), 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 56 [2024-11-24 01:31:36,777 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:31:36,781 INFO L225 Difference]: With dead ends: 1685 [2024-11-24 01:31:36,781 INFO L226 Difference]: Without dead ends: 1685 [2024-11-24 01:31:36,782 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2024-11-24 01:31:36,782 INFO L435 NwaCegarLoop]: 548 mSDtfsCounter, 1864 mSDsluCounter, 374 mSDsCounter, 0 mSdLazyCounter, 1469 mSolverCounterSat, 103 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1870 SdHoareTripleChecker+Valid, 922 SdHoareTripleChecker+Invalid, 1572 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 103 IncrementalHoareTripleChecker+Valid, 1469 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.6s IncrementalHoareTripleChecker+Time [2024-11-24 01:31:36,782 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1870 Valid, 922 Invalid, 1572 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [103 Valid, 1469 Invalid, 0 Unknown, 0 Unchecked, 3.6s Time] [2024-11-24 01:31:36,784 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1685 states. [2024-11-24 01:31:36,804 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1685 to 1508. [2024-11-24 01:31:36,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1508 states, 1018 states have (on average 1.7426326129666012) internal successors, (1774), 1497 states have internal predecessors, (1774), 9 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2024-11-24 01:31:36,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1508 states to 1508 states and 1792 transitions. [2024-11-24 01:31:36,810 INFO L78 Accepts]: Start accepts. Automaton has 1508 states and 1792 transitions. Word has length 56 [2024-11-24 01:31:36,810 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:31:36,810 INFO L471 AbstractCegarLoop]: Abstraction has 1508 states and 1792 transitions. [2024-11-24 01:31:36,810 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 14.0) internal successors, (56), 5 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:31:36,810 INFO L276 IsEmpty]: Start isEmpty. Operand 1508 states and 1792 transitions. [2024-11-24 01:31:36,814 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2024-11-24 01:31:36,814 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:31:36,815 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] [2024-11-24 01:31:36,829 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01822a34-db31-455f-9afc-c091d347e9f4/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-11-24 01:31:37,015 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01822a34-db31-455f-9afc-c091d347e9f4/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:31:37,016 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr66REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 730 more)] === [2024-11-24 01:31:37,017 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:31:37,017 INFO L85 PathProgramCache]: Analyzing trace with hash -1870442902, now seen corresponding path program 1 times [2024-11-24 01:31:37,018 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-24 01:31:37,018 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [878512538] [2024-11-24 01:31:37,018 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:31:37,018 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:31:37,018 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01822a34-db31-455f-9afc-c091d347e9f4/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 01:31:37,022 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01822a34-db31-455f-9afc-c091d347e9f4/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 01:31:37,027 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01822a34-db31-455f-9afc-c091d347e9f4/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-11-24 01:31:37,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:31:37,301 INFO L256 TraceCheckSpWp]: Trace formula consists of 257 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-24 01:31:37,304 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 01:31:37,315 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 [2024-11-24 01:31:37,332 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 [2024-11-24 01:31:37,368 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 [2024-11-24 01:31:37,382 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 01:31:37,382 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-24 01:31:37,382 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-24 01:31:37,382 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [878512538] [2024-11-24 01:31:37,383 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [878512538] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:31:37,383 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 01:31:37,383 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-24 01:31:37,383 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1750023020] [2024-11-24 01:31:37,383 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:31:37,383 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-24 01:31:37,383 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-24 01:31:37,383 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-24 01:31:37,383 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-24 01:31:37,384 INFO L87 Difference]: Start difference. First operand 1508 states and 1792 transitions. Second operand has 5 states, 4 states have (on average 15.25) internal successors, (61), 5 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:31:40,928 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:31:40,929 INFO L93 Difference]: Finished difference Result 1507 states and 1790 transitions. [2024-11-24 01:31:40,929 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-24 01:31:40,929 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 15.25) internal successors, (61), 5 states have internal predecessors, (61), 0 states have call successors, (0), 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 61 [2024-11-24 01:31:40,929 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:31:40,934 INFO L225 Difference]: With dead ends: 1507 [2024-11-24 01:31:40,934 INFO L226 Difference]: Without dead ends: 1507 [2024-11-24 01:31:40,934 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 57 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-24 01:31:40,935 INFO L435 NwaCegarLoop]: 1213 mSDtfsCounter, 2 mSDsluCounter, 1844 mSDsCounter, 0 mSdLazyCounter, 1802 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 3057 SdHoareTripleChecker+Invalid, 1803 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1802 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time [2024-11-24 01:31:40,935 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 3057 Invalid, 1803 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1802 Invalid, 0 Unknown, 0 Unchecked, 3.5s Time] [2024-11-24 01:31:40,936 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1507 states. [2024-11-24 01:31:40,948 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1507 to 1507. [2024-11-24 01:31:40,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1507 states, 1018 states have (on average 1.7406679764243616) internal successors, (1772), 1496 states have internal predecessors, (1772), 9 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2024-11-24 01:31:40,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1507 states to 1507 states and 1790 transitions. [2024-11-24 01:31:40,953 INFO L78 Accepts]: Start accepts. Automaton has 1507 states and 1790 transitions. Word has length 61 [2024-11-24 01:31:40,954 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:31:40,954 INFO L471 AbstractCegarLoop]: Abstraction has 1507 states and 1790 transitions. [2024-11-24 01:31:40,954 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 15.25) internal successors, (61), 5 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:31:40,954 INFO L276 IsEmpty]: Start isEmpty. Operand 1507 states and 1790 transitions. [2024-11-24 01:31:40,955 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2024-11-24 01:31:40,955 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:31:40,955 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] [2024-11-24 01:31:40,967 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01822a34-db31-455f-9afc-c091d347e9f4/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2024-11-24 01:31:41,156 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01822a34-db31-455f-9afc-c091d347e9f4/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:31:41,156 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr67REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 730 more)] === [2024-11-24 01:31:41,156 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:31:41,156 INFO L85 PathProgramCache]: Analyzing trace with hash -1870442901, now seen corresponding path program 1 times [2024-11-24 01:31:41,157 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-24 01:31:41,157 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [575692238] [2024-11-24 01:31:41,157 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:31:41,157 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:31:41,157 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01822a34-db31-455f-9afc-c091d347e9f4/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 01:31:41,160 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01822a34-db31-455f-9afc-c091d347e9f4/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 01:31:41,162 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01822a34-db31-455f-9afc-c091d347e9f4/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-11-24 01:31:41,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:31:41,443 INFO L256 TraceCheckSpWp]: Trace formula consists of 257 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-11-24 01:31:41,446 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 01:31:41,465 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 [2024-11-24 01:31:41,489 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 [2024-11-24 01:31:41,502 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 [2024-11-24 01:31:41,572 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 9 [2024-11-24 01:31:41,601 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 01:31:41,601 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-24 01:31:41,601 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-24 01:31:41,601 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [575692238] [2024-11-24 01:31:41,601 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [575692238] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:31:41,601 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 01:31:41,602 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-24 01:31:41,602 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [247066301] [2024-11-24 01:31:41,602 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:31:41,602 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-24 01:31:41,602 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-24 01:31:41,603 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-24 01:31:41,603 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-24 01:31:41,603 INFO L87 Difference]: Start difference. First operand 1507 states and 1790 transitions. Second operand has 5 states, 4 states have (on average 15.25) internal successors, (61), 5 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:31:46,186 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:31:46,186 INFO L93 Difference]: Finished difference Result 1506 states and 1788 transitions. [2024-11-24 01:31:46,187 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-24 01:31:46,187 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 15.25) internal successors, (61), 5 states have internal predecessors, (61), 0 states have call successors, (0), 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 61 [2024-11-24 01:31:46,187 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:31:46,191 INFO L225 Difference]: With dead ends: 1506 [2024-11-24 01:31:46,191 INFO L226 Difference]: Without dead ends: 1506 [2024-11-24 01:31:46,191 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 57 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-24 01:31:46,192 INFO L435 NwaCegarLoop]: 1213 mSDtfsCounter, 1 mSDsluCounter, 1875 mSDsCounter, 0 mSdLazyCounter, 1768 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 3088 SdHoareTripleChecker+Invalid, 1769 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1768 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.5s IncrementalHoareTripleChecker+Time [2024-11-24 01:31:46,192 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 3088 Invalid, 1769 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1768 Invalid, 0 Unknown, 0 Unchecked, 4.5s Time] [2024-11-24 01:31:46,194 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1506 states. [2024-11-24 01:31:46,204 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1506 to 1506. [2024-11-24 01:31:46,206 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1506 states, 1016 states have (on average 1.7421259842519685) internal successors, (1770), 1495 states have internal predecessors, (1770), 9 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2024-11-24 01:31:46,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1506 states to 1506 states and 1788 transitions. [2024-11-24 01:31:46,209 INFO L78 Accepts]: Start accepts. Automaton has 1506 states and 1788 transitions. Word has length 61 [2024-11-24 01:31:46,209 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:31:46,209 INFO L471 AbstractCegarLoop]: Abstraction has 1506 states and 1788 transitions. [2024-11-24 01:31:46,209 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 15.25) internal successors, (61), 5 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 01:31:46,209 INFO L276 IsEmpty]: Start isEmpty. Operand 1506 states and 1788 transitions. [2024-11-24 01:31:46,210 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2024-11-24 01:31:46,210 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:31:46,210 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] [2024-11-24 01:31:46,223 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01822a34-db31-455f-9afc-c091d347e9f4/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2024-11-24 01:31:46,415 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01822a34-db31-455f-9afc-c091d347e9f4/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:31:46,415 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr70REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 730 more)] === [2024-11-24 01:31:46,415 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:31:46,415 INFO L85 PathProgramCache]: Analyzing trace with hash 552675633, now seen corresponding path program 1 times [2024-11-24 01:31:46,416 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-24 01:31:46,416 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [886611235] [2024-11-24 01:31:46,416 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:31:46,416 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:31:46,416 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01822a34-db31-455f-9afc-c091d347e9f4/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 01:31:46,418 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01822a34-db31-455f-9afc-c091d347e9f4/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 01:31:46,419 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01822a34-db31-455f-9afc-c091d347e9f4/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-11-24 01:31:46,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:31:46,728 INFO L256 TraceCheckSpWp]: Trace formula consists of 283 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-24 01:31:46,731 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 01:31:46,741 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 [2024-11-24 01:31:46,849 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2024-11-24 01:31:46,867 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 01:31:46,867 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-24 01:31:46,867 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-24 01:31:46,867 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [886611235] [2024-11-24 01:31:46,867 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [886611235] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:31:46,867 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 01:31:46,867 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-24 01:31:46,868 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1298152850] [2024-11-24 01:31:46,868 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:31:46,868 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-24 01:31:46,868 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-24 01:31:46,869 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-24 01:31:46,869 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-11-24 01:31:46,870 INFO L87 Difference]: Start difference. First operand 1506 states and 1788 transitions. Second operand has 7 states, 5 states have (on average 13.4) internal successors, (67), 6 states have internal predecessors, (67), 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) [2024-11-24 01:31:51,292 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:31:51,292 INFO L93 Difference]: Finished difference Result 1524 states and 1818 transitions. [2024-11-24 01:31:51,292 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-24 01:31:51,292 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 5 states have (on average 13.4) internal successors, (67), 6 states have internal predecessors, (67), 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 69 [2024-11-24 01:31:51,293 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:31:51,299 INFO L225 Difference]: With dead ends: 1524 [2024-11-24 01:31:51,299 INFO L226 Difference]: Without dead ends: 1524 [2024-11-24 01:31:51,299 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 63 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-11-24 01:31:51,300 INFO L435 NwaCegarLoop]: 1202 mSDtfsCounter, 6 mSDsluCounter, 3117 mSDsCounter, 0 mSdLazyCounter, 1758 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 4319 SdHoareTripleChecker+Invalid, 1765 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 1758 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.3s IncrementalHoareTripleChecker+Time [2024-11-24 01:31:51,300 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 4319 Invalid, 1765 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 1758 Invalid, 0 Unknown, 0 Unchecked, 4.3s Time] [2024-11-24 01:31:51,302 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1524 states. [2024-11-24 01:31:51,347 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1524 to 1515. [2024-11-24 01:31:51,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1515 states, 1024 states have (on average 1.7392578125) internal successors, (1781), 1502 states have internal predecessors, (1781), 9 states have call successors, (9), 1 states have call predecessors, (9), 2 states have return successors, (18), 11 states have call predecessors, (18), 9 states have call successors, (18) [2024-11-24 01:31:51,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1515 states to 1515 states and 1808 transitions. [2024-11-24 01:31:51,354 INFO L78 Accepts]: Start accepts. Automaton has 1515 states and 1808 transitions. Word has length 69 [2024-11-24 01:31:51,354 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:31:51,354 INFO L471 AbstractCegarLoop]: Abstraction has 1515 states and 1808 transitions. [2024-11-24 01:31:51,354 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 5 states have (on average 13.4) internal successors, (67), 6 states have internal predecessors, (67), 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) [2024-11-24 01:31:51,354 INFO L276 IsEmpty]: Start isEmpty. Operand 1515 states and 1808 transitions. [2024-11-24 01:31:51,355 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2024-11-24 01:31:51,355 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:31:51,355 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] [2024-11-24 01:31:51,369 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01822a34-db31-455f-9afc-c091d347e9f4/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2024-11-24 01:31:51,559 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01822a34-db31-455f-9afc-c091d347e9f4/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:31:51,559 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr71REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 730 more)] === [2024-11-24 01:31:51,560 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:31:51,560 INFO L85 PathProgramCache]: Analyzing trace with hash 552675634, now seen corresponding path program 1 times [2024-11-24 01:31:51,560 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-24 01:31:51,560 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1031707157] [2024-11-24 01:31:51,560 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:31:51,560 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:31:51,561 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01822a34-db31-455f-9afc-c091d347e9f4/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 01:31:51,562 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01822a34-db31-455f-9afc-c091d347e9f4/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 01:31:51,564 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01822a34-db31-455f-9afc-c091d347e9f4/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-11-24 01:31:51,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:31:51,829 INFO L256 TraceCheckSpWp]: Trace formula consists of 283 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-24 01:31:51,831 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 01:31:51,855 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 01:31:51,855 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-24 01:31:51,856 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-24 01:31:51,856 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1031707157] [2024-11-24 01:31:51,856 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1031707157] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:31:51,856 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 01:31:51,856 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-24 01:31:51,856 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1976135993] [2024-11-24 01:31:51,856 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:31:51,857 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-24 01:31:51,857 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-24 01:31:51,857 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-24 01:31:51,857 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-24 01:31:51,858 INFO L87 Difference]: Start difference. First operand 1515 states and 1808 transitions. Second operand has 4 states, 4 states have (on average 16.75) internal successors, (67), 4 states have internal predecessors, (67), 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) [2024-11-24 01:31:51,933 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:31:51,933 INFO L93 Difference]: Finished difference Result 1509 states and 1794 transitions. [2024-11-24 01:31:51,935 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-24 01:31:51,935 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.75) internal successors, (67), 4 states have internal predecessors, (67), 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 69 [2024-11-24 01:31:51,936 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:31:51,942 INFO L225 Difference]: With dead ends: 1509 [2024-11-24 01:31:51,942 INFO L226 Difference]: Without dead ends: 1509 [2024-11-24 01:31:51,943 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 66 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-24 01:31:51,943 INFO L435 NwaCegarLoop]: 1212 mSDtfsCounter, 0 mSDsluCounter, 2416 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 3628 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-24 01:31:51,943 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 3628 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-24 01:31:51,945 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1509 states. [2024-11-24 01:31:51,970 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1509 to 1509. [2024-11-24 01:31:51,972 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1509 states, 1018 states have (on average 1.7416502946954813) internal successors, (1773), 1498 states have internal predecessors, (1773), 9 states have call successors, (9), 1 states have call predecessors, (9), 2 states have return successors, (12), 9 states have call predecessors, (12), 9 states have call successors, (12) [2024-11-24 01:31:51,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1509 states to 1509 states and 1794 transitions. [2024-11-24 01:31:51,976 INFO L78 Accepts]: Start accepts. Automaton has 1509 states and 1794 transitions. Word has length 69 [2024-11-24 01:31:51,976 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:31:51,976 INFO L471 AbstractCegarLoop]: Abstraction has 1509 states and 1794 transitions. [2024-11-24 01:31:51,976 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.75) internal successors, (67), 4 states have internal predecessors, (67), 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) [2024-11-24 01:31:51,977 INFO L276 IsEmpty]: Start isEmpty. Operand 1509 states and 1794 transitions. [2024-11-24 01:31:51,977 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2024-11-24 01:31:51,977 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:31:51,977 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] [2024-11-24 01:31:51,991 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01822a34-db31-455f-9afc-c091d347e9f4/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2024-11-24 01:31:52,178 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01822a34-db31-455f-9afc-c091d347e9f4/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:31:52,178 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr70REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 730 more)] === [2024-11-24 01:31:52,178 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:31:52,178 INFO L85 PathProgramCache]: Analyzing trace with hash 511803710, now seen corresponding path program 1 times [2024-11-24 01:31:52,179 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-24 01:31:52,179 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [545696779] [2024-11-24 01:31:52,179 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:31:52,179 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:31:52,179 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01822a34-db31-455f-9afc-c091d347e9f4/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 01:31:52,180 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01822a34-db31-455f-9afc-c091d347e9f4/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 01:31:52,181 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01822a34-db31-455f-9afc-c091d347e9f4/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2024-11-24 01:31:52,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:31:52,484 INFO L256 TraceCheckSpWp]: Trace formula consists of 294 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-24 01:31:52,487 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 01:31:52,524 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 01:31:52,524 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-24 01:31:52,619 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 01:31:52,619 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-24 01:31:52,620 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [545696779] [2024-11-24 01:31:52,620 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [545696779] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-24 01:31:52,620 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-24 01:31:52,620 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2024-11-24 01:31:52,620 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2007393543] [2024-11-24 01:31:52,620 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-24 01:31:52,621 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-24 01:31:52,621 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-24 01:31:52,621 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-24 01:31:52,621 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2024-11-24 01:31:52,622 INFO L87 Difference]: Start difference. First operand 1509 states and 1794 transitions. Second operand has 8 states, 8 states have (on average 9.0) internal successors, (72), 8 states have internal predecessors, (72), 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) [2024-11-24 01:31:52,894 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:31:52,895 INFO L93 Difference]: Finished difference Result 1521 states and 1813 transitions. [2024-11-24 01:31:52,895 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-24 01:31:52,896 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 9.0) internal successors, (72), 8 states have internal predecessors, (72), 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 70 [2024-11-24 01:31:52,896 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:31:52,900 INFO L225 Difference]: With dead ends: 1521 [2024-11-24 01:31:52,900 INFO L226 Difference]: Without dead ends: 1521 [2024-11-24 01:31:52,900 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 141 GetRequests, 132 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=44, Invalid=66, Unknown=0, NotChecked=0, Total=110 [2024-11-24 01:31:52,901 INFO L435 NwaCegarLoop]: 1211 mSDtfsCounter, 5 mSDsluCounter, 6027 mSDsCounter, 0 mSdLazyCounter, 76 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 7238 SdHoareTripleChecker+Invalid, 86 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 76 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-24 01:31:52,901 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 7238 Invalid, 86 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 76 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-24 01:31:52,903 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1521 states. [2024-11-24 01:31:52,918 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1521 to 1519. [2024-11-24 01:31:52,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1519 states, 1027 states have (on average 1.7409931840311588) internal successors, (1788), 1507 states have internal predecessors, (1788), 9 states have call successors, (9), 2 states have call predecessors, (9), 3 states have return successors, (12), 9 states have call predecessors, (12), 9 states have call successors, (12) [2024-11-24 01:31:52,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1519 states to 1519 states and 1809 transitions. [2024-11-24 01:31:52,924 INFO L78 Accepts]: Start accepts. Automaton has 1519 states and 1809 transitions. Word has length 70 [2024-11-24 01:31:52,924 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:31:52,924 INFO L471 AbstractCegarLoop]: Abstraction has 1519 states and 1809 transitions. [2024-11-24 01:31:52,924 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.0) internal successors, (72), 8 states have internal predecessors, (72), 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) [2024-11-24 01:31:52,924 INFO L276 IsEmpty]: Start isEmpty. Operand 1519 states and 1809 transitions. [2024-11-24 01:31:52,925 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2024-11-24 01:31:52,925 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:31:52,925 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] [2024-11-24 01:31:52,938 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01822a34-db31-455f-9afc-c091d347e9f4/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2024-11-24 01:31:53,129 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01822a34-db31-455f-9afc-c091d347e9f4/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:31:53,129 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr70REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 730 more)] === [2024-11-24 01:31:53,130 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:31:53,130 INFO L85 PathProgramCache]: Analyzing trace with hash 776815729, now seen corresponding path program 2 times [2024-11-24 01:31:53,130 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-24 01:31:53,130 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [474498907] [2024-11-24 01:31:53,130 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-24 01:31:53,130 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:31:53,130 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01822a34-db31-455f-9afc-c091d347e9f4/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 01:31:53,132 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01822a34-db31-455f-9afc-c091d347e9f4/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 01:31:53,133 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01822a34-db31-455f-9afc-c091d347e9f4/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2024-11-24 01:31:58,673 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-24 01:31:58,673 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-24 01:31:58,685 INFO L256 TraceCheckSpWp]: Trace formula consists of 327 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-11-24 01:31:58,690 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 01:31:58,860 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2024-11-24 01:31:58,860 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 [2024-11-24 01:31:58,886 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 [2024-11-24 01:31:59,121 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-24 01:31:59,121 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 [2024-11-24 01:31:59,178 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 [2024-11-24 01:31:59,212 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-24 01:31:59,213 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-24 01:31:59,332 INFO L349 Elim1Store]: treesize reduction 7, result has 63.2 percent of original size [2024-11-24 01:31:59,333 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 [2024-11-24 01:31:59,413 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-24 01:31:59,413 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [474498907] [2024-11-24 01:31:59,413 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [474498907] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 01:31:59,413 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [371725651] [2024-11-24 01:31:59,413 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-24 01:31:59,414 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-24 01:31:59,414 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01822a34-db31-455f-9afc-c091d347e9f4/bin/uautomizer-verify-LYvppIcaGC/cvc4 [2024-11-24 01:31:59,416 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01822a34-db31-455f-9afc-c091d347e9f4/bin/uautomizer-verify-LYvppIcaGC/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-24 01:31:59,419 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01822a34-db31-455f-9afc-c091d347e9f4/bin/uautomizer-verify-LYvppIcaGC/cvc4 --incremental --print-success --lang smt (19)] Waiting until timeout for monitored process [2024-11-24 01:32:00,655 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-24 01:32:00,655 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-24 01:32:00,682 INFO L256 TraceCheckSpWp]: Trace formula consists of 327 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-24 01:32:00,684 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 01:32:00,946 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 01:32:00,947 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-24 01:32:01,381 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 01:32:01,382 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [371725651] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-24 01:32:01,382 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-24 01:32:01,383 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 8, 8] total 24 [2024-11-24 01:32:01,385 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [83573554] [2024-11-24 01:32:01,385 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-24 01:32:01,385 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2024-11-24 01:32:01,386 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-24 01:32:01,387 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2024-11-24 01:32:01,391 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=552, Unknown=7, NotChecked=0, Total=650 [2024-11-24 01:32:01,392 INFO L87 Difference]: Start difference. First operand 1519 states and 1809 transitions. Second operand has 24 states, 23 states have (on average 5.956521739130435) internal successors, (137), 23 states have internal predecessors, (137), 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) [2024-11-24 01:32:19,863 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:32:19,863 INFO L93 Difference]: Finished difference Result 1535 states and 1832 transitions. [2024-11-24 01:32:19,864 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2024-11-24 01:32:19,864 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 23 states have (on average 5.956521739130435) internal successors, (137), 23 states have internal predecessors, (137), 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 73 [2024-11-24 01:32:19,864 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:32:19,867 INFO L225 Difference]: With dead ends: 1535 [2024-11-24 01:32:19,868 INFO L226 Difference]: Without dead ends: 1529 [2024-11-24 01:32:19,868 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 248 GetRequests, 198 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 465 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=395, Invalid=2248, Unknown=9, NotChecked=0, Total=2652 [2024-11-24 01:32:19,869 INFO L435 NwaCegarLoop]: 723 mSDtfsCounter, 982 mSDsluCounter, 10145 mSDsCounter, 0 mSdLazyCounter, 9098 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 15.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 989 SdHoareTripleChecker+Valid, 10868 SdHoareTripleChecker+Invalid, 9143 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 9098 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 17.3s IncrementalHoareTripleChecker+Time [2024-11-24 01:32:19,869 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [989 Valid, 10868 Invalid, 9143 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [45 Valid, 9098 Invalid, 0 Unknown, 0 Unchecked, 17.3s Time] [2024-11-24 01:32:19,870 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1529 states. [2024-11-24 01:32:19,901 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1529 to 1527. [2024-11-24 01:32:19,902 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1527 states, 1036 states have (on average 1.7345559845559846) internal successors, (1797), 1515 states have internal predecessors, (1797), 9 states have call successors, (9), 2 states have call predecessors, (9), 3 states have return successors, (12), 9 states have call predecessors, (12), 9 states have call successors, (12) [2024-11-24 01:32:19,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1527 states to 1527 states and 1818 transitions. [2024-11-24 01:32:19,905 INFO L78 Accepts]: Start accepts. Automaton has 1527 states and 1818 transitions. Word has length 73 [2024-11-24 01:32:19,905 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:32:19,906 INFO L471 AbstractCegarLoop]: Abstraction has 1527 states and 1818 transitions. [2024-11-24 01:32:19,906 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 23 states have (on average 5.956521739130435) internal successors, (137), 23 states have internal predecessors, (137), 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) [2024-11-24 01:32:19,906 INFO L276 IsEmpty]: Start isEmpty. Operand 1527 states and 1818 transitions. [2024-11-24 01:32:19,906 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2024-11-24 01:32:19,907 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:32:19,907 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] [2024-11-24 01:32:19,935 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01822a34-db31-455f-9afc-c091d347e9f4/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2024-11-24 01:32:20,113 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01822a34-db31-455f-9afc-c091d347e9f4/bin/uautomizer-verify-LYvppIcaGC/cvc4 --incremental --print-success --lang smt (19)] Ended with exit code 0 [2024-11-24 01:32:20,307 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01822a34-db31-455f-9afc-c091d347e9f4/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01822a34-db31-455f-9afc-c091d347e9f4/bin/uautomizer-verify-LYvppIcaGC/cvc4 --incremental --print-success --lang smt [2024-11-24 01:32:20,308 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr71REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 730 more)] === [2024-11-24 01:32:20,308 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:32:20,309 INFO L85 PathProgramCache]: Analyzing trace with hash 334045522, now seen corresponding path program 1 times [2024-11-24 01:32:20,309 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-24 01:32:20,309 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1857187639] [2024-11-24 01:32:20,309 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:32:20,309 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:32:20,309 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01822a34-db31-455f-9afc-c091d347e9f4/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 01:32:20,311 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01822a34-db31-455f-9afc-c091d347e9f4/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 01:32:20,312 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01822a34-db31-455f-9afc-c091d347e9f4/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2024-11-24 01:32:20,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:32:20,667 INFO L256 TraceCheckSpWp]: Trace formula consists of 393 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-24 01:32:20,669 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 01:32:20,845 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 01:32:20,845 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-24 01:32:21,628 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 01:32:21,629 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-24 01:32:21,629 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1857187639] [2024-11-24 01:32:21,629 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1857187639] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-24 01:32:21,629 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-24 01:32:21,629 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 26 [2024-11-24 01:32:21,629 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [90089205] [2024-11-24 01:32:21,629 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-24 01:32:21,629 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2024-11-24 01:32:21,630 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-24 01:32:21,630 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2024-11-24 01:32:21,630 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=193, Invalid=457, Unknown=0, NotChecked=0, Total=650 [2024-11-24 01:32:21,630 INFO L87 Difference]: Start difference. First operand 1527 states and 1818 transitions. Second operand has 26 states, 26 states have (on average 3.4615384615384617) internal successors, (90), 26 states have internal predecessors, (90), 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) [2024-11-24 01:32:23,863 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:32:23,863 INFO L93 Difference]: Finished difference Result 1551 states and 1857 transitions. [2024-11-24 01:32:23,864 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2024-11-24 01:32:23,864 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 3.4615384615384617) internal successors, (90), 26 states have internal predecessors, (90), 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 79 [2024-11-24 01:32:23,864 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:32:23,868 INFO L225 Difference]: With dead ends: 1551 [2024-11-24 01:32:23,869 INFO L226 Difference]: Without dead ends: 1545 [2024-11-24 01:32:23,869 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 177 GetRequests, 132 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 100 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=728, Invalid=1434, Unknown=0, NotChecked=0, Total=2162 [2024-11-24 01:32:23,870 INFO L435 NwaCegarLoop]: 1211 mSDtfsCounter, 19 mSDsluCounter, 13276 mSDsCounter, 0 mSdLazyCounter, 603 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 14487 SdHoareTripleChecker+Invalid, 630 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 603 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-11-24 01:32:23,870 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 14487 Invalid, 630 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 603 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-11-24 01:32:23,872 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1545 states. [2024-11-24 01:32:23,887 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1545 to 1545. [2024-11-24 01:32:23,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1545 states, 1054 states have (on average 1.7267552182163188) internal successors, (1820), 1533 states have internal predecessors, (1820), 9 states have call successors, (9), 2 states have call predecessors, (9), 3 states have return successors, (12), 9 states have call predecessors, (12), 9 states have call successors, (12) [2024-11-24 01:32:23,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1545 states to 1545 states and 1841 transitions. [2024-11-24 01:32:23,891 INFO L78 Accepts]: Start accepts. Automaton has 1545 states and 1841 transitions. Word has length 79 [2024-11-24 01:32:23,891 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:32:23,892 INFO L471 AbstractCegarLoop]: Abstraction has 1545 states and 1841 transitions. [2024-11-24 01:32:23,892 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 3.4615384615384617) internal successors, (90), 26 states have internal predecessors, (90), 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) [2024-11-24 01:32:23,892 INFO L276 IsEmpty]: Start isEmpty. Operand 1545 states and 1841 transitions. [2024-11-24 01:32:23,892 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2024-11-24 01:32:23,893 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:32:23,893 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] [2024-11-24 01:32:23,908 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01822a34-db31-455f-9afc-c091d347e9f4/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2024-11-24 01:32:24,093 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01822a34-db31-455f-9afc-c091d347e9f4/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:32:24,093 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr71REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 730 more)] === [2024-11-24 01:32:24,094 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:32:24,094 INFO L85 PathProgramCache]: Analyzing trace with hash -553950446, now seen corresponding path program 2 times [2024-11-24 01:32:24,094 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-24 01:32:24,094 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1549732277] [2024-11-24 01:32:24,094 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-24 01:32:24,094 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:32:24,094 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01822a34-db31-455f-9afc-c091d347e9f4/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 01:32:24,096 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01822a34-db31-455f-9afc-c091d347e9f4/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 01:32:24,097 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01822a34-db31-455f-9afc-c091d347e9f4/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2024-11-24 01:32:38,393 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-24 01:32:38,393 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-24 01:32:38,411 INFO L256 TraceCheckSpWp]: Trace formula consists of 525 conjuncts, 64 conjuncts are in the unsatisfiable core [2024-11-24 01:32:38,419 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 01:32:38,559 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2024-11-24 01:32:38,559 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 [2024-11-24 01:32:38,568 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 [2024-11-24 01:32:38,609 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 [2024-11-24 01:32:38,619 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 [2024-11-24 01:32:38,748 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 [2024-11-24 01:32:38,754 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 3 [2024-11-24 01:32:39,276 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-24 01:32:39,277 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 [2024-11-24 01:32:39,291 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 [2024-11-24 01:32:39,340 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 [2024-11-24 01:32:39,347 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 [2024-11-24 01:32:39,382 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 231 trivial. 0 not checked. [2024-11-24 01:32:39,382 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-24 01:32:40,057 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-24 01:32:40,057 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1549732277] [2024-11-24 01:32:40,058 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1549732277] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 01:32:40,058 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [346683040] [2024-11-24 01:32:40,058 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-24 01:32:40,058 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-24 01:32:40,058 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01822a34-db31-455f-9afc-c091d347e9f4/bin/uautomizer-verify-LYvppIcaGC/cvc4 [2024-11-24 01:32:40,060 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01822a34-db31-455f-9afc-c091d347e9f4/bin/uautomizer-verify-LYvppIcaGC/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-24 01:32:40,063 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01822a34-db31-455f-9afc-c091d347e9f4/bin/uautomizer-verify-LYvppIcaGC/cvc4 --incremental --print-success --lang smt (22)] Waiting until timeout for monitored process [2024-11-24 01:32:41,385 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-24 01:32:41,386 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-24 01:32:41,446 INFO L256 TraceCheckSpWp]: Trace formula consists of 525 conjuncts, 46 conjuncts are in the unsatisfiable core [2024-11-24 01:32:41,449 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 01:32:43,129 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 01:32:43,129 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-24 01:32:46,487 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 01:32:46,487 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [346683040] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-24 01:32:46,487 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-24 01:32:46,487 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 26, 26] total 58 [2024-11-24 01:32:46,487 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [818412096] [2024-11-24 01:32:46,487 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-24 01:32:46,488 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 58 states [2024-11-24 01:32:46,488 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-24 01:32:46,489 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 58 interpolants. [2024-11-24 01:32:46,490 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=700, Invalid=2954, Unknown=6, NotChecked=0, Total=3660 [2024-11-24 01:32:46,490 INFO L87 Difference]: Start difference. First operand 1545 states and 1841 transitions. Second operand has 58 states, 57 states have (on average 3.0350877192982457) internal successors, (173), 58 states have internal predecessors, (173), 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) [2024-11-24 01:33:47,244 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:33:47,244 INFO L93 Difference]: Finished difference Result 1647 states and 1998 transitions. [2024-11-24 01:33:47,244 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 130 states. [2024-11-24 01:33:47,245 INFO L78 Accepts]: Start accepts. Automaton has has 58 states, 57 states have (on average 3.0350877192982457) internal successors, (173), 58 states have internal predecessors, (173), 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 91 [2024-11-24 01:33:47,245 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:33:47,248 INFO L225 Difference]: With dead ends: 1647 [2024-11-24 01:33:47,249 INFO L226 Difference]: Without dead ends: 1631 [2024-11-24 01:33:47,252 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 375 GetRequests, 217 SyntacticMatches, 1 SemanticMatches, 157 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6172 ImplicationChecksByTransitivity, 22.2s TimeCoverageRelationStatistics Valid=5454, Invalid=19662, Unknown=6, NotChecked=0, Total=25122 [2024-11-24 01:33:47,252 INFO L435 NwaCegarLoop]: 724 mSDtfsCounter, 994 mSDsluCounter, 23961 mSDsCounter, 0 mSdLazyCounter, 21501 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 38.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 999 SdHoareTripleChecker+Valid, 24685 SdHoareTripleChecker+Invalid, 21525 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 21501 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 42.5s IncrementalHoareTripleChecker+Time [2024-11-24 01:33:47,253 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [999 Valid, 24685 Invalid, 21525 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [24 Valid, 21501 Invalid, 0 Unknown, 0 Unchecked, 42.5s Time] [2024-11-24 01:33:47,254 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1631 states. [2024-11-24 01:33:47,272 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1631 to 1631. [2024-11-24 01:33:47,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1631 states, 1140 states have (on average 1.682456140350877) internal successors, (1918), 1618 states have internal predecessors, (1918), 9 states have call successors, (9), 3 states have call predecessors, (9), 4 states have return successors, (12), 9 states have call predecessors, (12), 9 states have call successors, (12) [2024-11-24 01:33:47,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1631 states to 1631 states and 1939 transitions. [2024-11-24 01:33:47,276 INFO L78 Accepts]: Start accepts. Automaton has 1631 states and 1939 transitions. Word has length 91 [2024-11-24 01:33:47,277 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:33:47,277 INFO L471 AbstractCegarLoop]: Abstraction has 1631 states and 1939 transitions. [2024-11-24 01:33:47,277 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 58 states, 57 states have (on average 3.0350877192982457) internal successors, (173), 58 states have internal predecessors, (173), 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) [2024-11-24 01:33:47,277 INFO L276 IsEmpty]: Start isEmpty. Operand 1631 states and 1939 transitions. [2024-11-24 01:33:47,291 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2024-11-24 01:33:47,291 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:33:47,291 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] [2024-11-24 01:33:47,320 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01822a34-db31-455f-9afc-c091d347e9f4/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Ended with exit code 0 [2024-11-24 01:33:47,498 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01822a34-db31-455f-9afc-c091d347e9f4/bin/uautomizer-verify-LYvppIcaGC/cvc4 --incremental --print-success --lang smt (22)] Ended with exit code 0 [2024-11-24 01:33:47,691 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01822a34-db31-455f-9afc-c091d347e9f4/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01822a34-db31-455f-9afc-c091d347e9f4/bin/uautomizer-verify-LYvppIcaGC/cvc4 --incremental --print-success --lang smt [2024-11-24 01:33:47,692 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr74REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 730 more)] === [2024-11-24 01:33:47,692 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:33:47,692 INFO L85 PathProgramCache]: Analyzing trace with hash -351102565, now seen corresponding path program 1 times [2024-11-24 01:33:47,693 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-24 01:33:47,693 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1932033026] [2024-11-24 01:33:47,693 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:33:47,693 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:33:47,693 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01822a34-db31-455f-9afc-c091d347e9f4/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 01:33:47,695 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01822a34-db31-455f-9afc-c091d347e9f4/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 01:33:47,696 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01822a34-db31-455f-9afc-c091d347e9f4/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2024-11-24 01:33:48,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:33:48,184 INFO L256 TraceCheckSpWp]: Trace formula consists of 787 conjuncts, 58 conjuncts are in the unsatisfiable core [2024-11-24 01:33:48,191 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 01:33:48,194 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 [2024-11-24 01:33:48,308 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2024-11-24 01:33:48,308 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 [2024-11-24 01:33:48,330 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 [2024-11-24 01:33:48,969 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-24 01:33:48,969 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 [2024-11-24 01:33:49,090 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-24 01:33:49,090 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 [2024-11-24 01:33:49,108 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 [2024-11-24 01:33:49,129 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 946 trivial. 0 not checked. [2024-11-24 01:33:49,129 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-24 01:33:49,218 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_2048 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (_ bv1 1) (select |c_#valid| (let ((.cse0 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (store |c_#memory_$Pointer$#1.base| (select (select |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse0) v_ArrVal_2048) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0)))))) is different from false [2024-11-24 01:33:49,663 INFO L349 Elim1Store]: treesize reduction 7, result has 77.4 percent of original size [2024-11-24 01:33:49,664 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 [2024-11-24 01:33:49,673 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_2048 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_2094 (Array (_ BitVec 32) (_ BitVec 32)))) (= (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (let ((.cse0 (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem32#1.base| v_ArrVal_2094))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_2048)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)) |c_ULTIMATE.start_main_#t~mem32#1.base|)) is different from false [2024-11-24 01:33:49,675 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-24 01:33:49,675 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1932033026] [2024-11-24 01:33:49,675 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1932033026] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 01:33:49,675 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1976925915] [2024-11-24 01:33:49,675 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:33:49,675 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-24 01:33:49,675 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01822a34-db31-455f-9afc-c091d347e9f4/bin/uautomizer-verify-LYvppIcaGC/cvc4 [2024-11-24 01:33:49,677 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01822a34-db31-455f-9afc-c091d347e9f4/bin/uautomizer-verify-LYvppIcaGC/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-24 01:33:49,678 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01822a34-db31-455f-9afc-c091d347e9f4/bin/uautomizer-verify-LYvppIcaGC/cvc4 --incremental --print-success --lang smt (24)] Waiting until timeout for monitored process [2024-11-24 01:33:52,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:33:52,902 INFO L256 TraceCheckSpWp]: Trace formula consists of 787 conjuncts, 62 conjuncts are in the unsatisfiable core [2024-11-24 01:33:52,910 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 01:33:52,987 INFO L349 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2024-11-24 01:33:52,988 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 14 treesize of output 20 [2024-11-24 01:33:53,394 INFO L349 Elim1Store]: treesize reduction 54, result has 29.9 percent of original size [2024-11-24 01:33:53,395 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 26 treesize of output 43 [2024-11-24 01:33:53,489 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 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 [2024-11-24 01:33:53,765 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 34 treesize of output 16 [2024-11-24 01:33:55,336 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-24 01:33:55,336 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 54 treesize of output 51 [2024-11-24 01:33:55,529 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-24 01:33:55,529 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 54 treesize of output 51 [2024-11-24 01:33:55,571 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 43 treesize of output 19 [2024-11-24 01:33:55,676 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 946 trivial. 0 not checked. [2024-11-24 01:33:55,676 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-24 01:33:56,250 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_2546 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_2048 (Array (_ BitVec 32) (_ BitVec 32)))) (= (bvadd (_ bv1 1) (select |c_#valid| (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (let ((.cse0 (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem32#1.base| v_ArrVal_2546))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_2048)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))) (_ bv0 1))) is different from false [2024-11-24 01:33:56,252 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1976925915] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 01:33:56,252 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-24 01:33:56,252 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 9] total 20 [2024-11-24 01:33:56,252 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1444486283] [2024-11-24 01:33:56,252 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-24 01:33:56,253 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-11-24 01:33:56,253 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-24 01:33:56,254 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-11-24 01:33:56,254 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=414, Unknown=11, NotChecked=132, Total=650 [2024-11-24 01:33:56,254 INFO L87 Difference]: Start difference. First operand 1631 states and 1939 transitions. Second operand has 21 states, 18 states have (on average 8.0) internal successors, (144), 20 states have internal predecessors, (144), 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) [2024-11-24 01:34:12,852 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:34:12,853 INFO L93 Difference]: Finished difference Result 2883 states and 3333 transitions. [2024-11-24 01:34:12,853 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2024-11-24 01:34:12,853 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 18 states have (on average 8.0) internal successors, (144), 20 states have internal predecessors, (144), 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 116 [2024-11-24 01:34:12,853 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:34:12,859 INFO L225 Difference]: With dead ends: 2883 [2024-11-24 01:34:12,859 INFO L226 Difference]: Without dead ends: 2883 [2024-11-24 01:34:12,860 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 257 GetRequests, 218 SyntacticMatches, 2 SemanticMatches, 37 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 313 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=202, Invalid=1055, Unknown=15, NotChecked=210, Total=1482 [2024-11-24 01:34:12,860 INFO L435 NwaCegarLoop]: 629 mSDtfsCounter, 3497 mSDsluCounter, 6764 mSDsCounter, 0 mSdLazyCounter, 7538 mSolverCounterSat, 60 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 14.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3511 SdHoareTripleChecker+Valid, 7393 SdHoareTripleChecker+Invalid, 7598 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 60 IncrementalHoareTripleChecker+Valid, 7538 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 16.0s IncrementalHoareTripleChecker+Time [2024-11-24 01:34:12,861 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [3511 Valid, 7393 Invalid, 7598 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [60 Valid, 7538 Invalid, 0 Unknown, 0 Unchecked, 16.0s Time] [2024-11-24 01:34:12,863 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2883 states. [2024-11-24 01:34:12,893 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2883 to 2209. [2024-11-24 01:34:12,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2209 states, 1714 states have (on average 1.634189031505251) internal successors, (2801), 2189 states have internal predecessors, (2801), 15 states have call successors, (15), 6 states have call predecessors, (15), 8 states have return successors, (20), 13 states have call predecessors, (20), 15 states have call successors, (20) [2024-11-24 01:34:12,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2209 states to 2209 states and 2836 transitions. [2024-11-24 01:34:12,899 INFO L78 Accepts]: Start accepts. Automaton has 2209 states and 2836 transitions. Word has length 116 [2024-11-24 01:34:12,900 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:34:12,900 INFO L471 AbstractCegarLoop]: Abstraction has 2209 states and 2836 transitions. [2024-11-24 01:34:12,900 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 18 states have (on average 8.0) internal successors, (144), 20 states have internal predecessors, (144), 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) [2024-11-24 01:34:12,900 INFO L276 IsEmpty]: Start isEmpty. Operand 2209 states and 2836 transitions. [2024-11-24 01:34:12,901 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2024-11-24 01:34:12,901 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:34:12,901 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] [2024-11-24 01:34:12,920 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01822a34-db31-455f-9afc-c091d347e9f4/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Ended with exit code 0 [2024-11-24 01:34:13,111 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01822a34-db31-455f-9afc-c091d347e9f4/bin/uautomizer-verify-LYvppIcaGC/cvc4 --incremental --print-success --lang smt (24)] Ended with exit code 0 [2024-11-24 01:34:13,302 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01822a34-db31-455f-9afc-c091d347e9f4/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01822a34-db31-455f-9afc-c091d347e9f4/bin/uautomizer-verify-LYvppIcaGC/cvc4 --incremental --print-success --lang smt [2024-11-24 01:34:13,302 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr75REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 730 more)] === [2024-11-24 01:34:13,302 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:34:13,303 INFO L85 PathProgramCache]: Analyzing trace with hash -351102564, now seen corresponding path program 1 times [2024-11-24 01:34:13,303 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-24 01:34:13,303 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1927847877] [2024-11-24 01:34:13,303 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:34:13,303 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:34:13,303 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01822a34-db31-455f-9afc-c091d347e9f4/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 01:34:13,305 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01822a34-db31-455f-9afc-c091d347e9f4/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 01:34:13,307 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01822a34-db31-455f-9afc-c091d347e9f4/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2024-11-24 01:34:13,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:34:13,852 INFO L256 TraceCheckSpWp]: Trace formula consists of 787 conjuncts, 111 conjuncts are in the unsatisfiable core [2024-11-24 01:34:13,863 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 01:34:13,867 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 [2024-11-24 01:34:13,977 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 [2024-11-24 01:34:13,991 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2024-11-24 01:34:13,992 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 [2024-11-24 01:34:14,016 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 [2024-11-24 01:34:14,020 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 [2024-11-24 01:34:14,133 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 [2024-11-24 01:34:14,138 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 [2024-11-24 01:34:14,955 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-24 01:34:14,955 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 [2024-11-24 01:34:14,973 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 [2024-11-24 01:34:15,113 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-24 01:34:15,113 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 [2024-11-24 01:34:15,125 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 [2024-11-24 01:34:15,152 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 [2024-11-24 01:34:15,160 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 [2024-11-24 01:34:15,185 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 946 trivial. 0 not checked. [2024-11-24 01:34:15,185 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-24 01:34:15,325 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (and (forall ((v_ArrVal_2998 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (select (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_#t~mem34#1.base| v_ArrVal_2998) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (bvule (bvadd (_ bv4 32) .cse0) (bvadd (_ bv8 32) .cse0)))) (forall ((v_ArrVal_2998 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_2999 (Array (_ BitVec 32) (_ BitVec 32)))) (bvule (bvadd (_ bv8 32) (select (select (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_#t~mem34#1.base| v_ArrVal_2998) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)) (select |c_#length| (select (select (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem34#1.base| v_ArrVal_2999) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))))) is different from false [2024-11-24 01:34:15,354 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$#1.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (and (forall ((v_ArrVal_2998 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (select (store |c_#memory_$Pointer$#1.offset| .cse1 v_ArrVal_2998) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (bvule (bvadd (_ bv4 32) .cse0) (bvadd (_ bv8 32) .cse0)))) (forall ((v_ArrVal_2998 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_2999 (Array (_ BitVec 32) (_ BitVec 32)))) (bvule (bvadd (_ bv8 32) (select (select (store |c_#memory_$Pointer$#1.offset| .cse1 v_ArrVal_2998) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2)) (select |c_#length| (select (select (store |c_#memory_$Pointer$#1.base| .cse1 v_ArrVal_2999) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))))))) is different from false [2024-11-24 01:34:16,767 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (and (forall ((v_ArrVal_3091 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_3090 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_2998 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_2999 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse2 (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem32#1.base| v_ArrVal_3090))) (let ((.cse0 (select (select .cse2 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (bvule (bvadd (_ bv8 32) (select (select (store (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_#t~mem32#1.base| v_ArrVal_3091) .cse0 v_ArrVal_2998) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)) (select |c_#length| (select (select (store .cse2 .cse0 v_ArrVal_2999) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))))) (forall ((v_ArrVal_3091 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_3090 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_2998 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse3 (select (select (store (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_#t~mem32#1.base| v_ArrVal_3091) (select (select (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem32#1.base| v_ArrVal_3090) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_2998) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (bvule (bvadd (_ bv4 32) .cse3) (bvadd (_ bv8 32) .cse3)))))) is different from false [2024-11-24 01:34:16,775 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-24 01:34:16,775 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1927847877] [2024-11-24 01:34:16,775 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1927847877] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 01:34:16,775 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1996009047] [2024-11-24 01:34:16,775 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:34:16,775 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-24 01:34:16,775 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01822a34-db31-455f-9afc-c091d347e9f4/bin/uautomizer-verify-LYvppIcaGC/cvc4 [2024-11-24 01:34:16,777 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01822a34-db31-455f-9afc-c091d347e9f4/bin/uautomizer-verify-LYvppIcaGC/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-24 01:34:16,778 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01822a34-db31-455f-9afc-c091d347e9f4/bin/uautomizer-verify-LYvppIcaGC/cvc4 --incremental --print-success --lang smt (26)] Waiting until timeout for monitored process [2024-11-24 01:34:20,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:34:20,139 INFO L256 TraceCheckSpWp]: Trace formula consists of 787 conjuncts, 112 conjuncts are in the unsatisfiable core [2024-11-24 01:34:20,150 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 01:34:20,153 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 [2024-11-24 01:34:20,281 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2024-11-24 01:34:20,294 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2024-11-24 01:34:20,294 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2024-11-24 01:34:20,311 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 [2024-11-24 01:34:20,320 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 [2024-11-24 01:34:20,392 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 [2024-11-24 01:34:20,398 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 [2024-11-24 01:34:21,179 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-24 01:34:21,179 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 [2024-11-24 01:34:21,188 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 13 [2024-11-24 01:34:21,260 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-24 01:34:21,260 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 [2024-11-24 01:34:21,269 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 [2024-11-24 01:34:21,296 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 [2024-11-24 01:34:21,303 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 [2024-11-24 01:34:21,304 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 946 trivial. 0 not checked. [2024-11-24 01:34:21,304 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-24 01:34:21,501 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$#1.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (and (forall ((v_ArrVal_3543 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (select (store |c_#memory_$Pointer$#1.offset| .cse1 v_ArrVal_3543) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (bvule (bvadd (_ bv4 32) .cse0) (bvadd (_ bv8 32) .cse0)))) (forall ((v_ArrVal_3544 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_3543 (Array (_ BitVec 32) (_ BitVec 32)))) (bvule (bvadd (_ bv8 32) (select (select (store |c_#memory_$Pointer$#1.offset| .cse1 v_ArrVal_3543) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2)) (select |c_#length| (select (select (store |c_#memory_$Pointer$#1.base| .cse1 v_ArrVal_3544) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))))))) is different from false [2024-11-24 01:34:22,973 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (and (forall ((v_ArrVal_3636 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_3635 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_3543 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (select (store (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_#t~mem32#1.base| v_ArrVal_3636) (select (select (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem32#1.base| v_ArrVal_3635) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_3543) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (bvule (bvadd (_ bv4 32) .cse0) (bvadd (_ bv8 32) .cse0)))) (forall ((v_ArrVal_3636 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_3544 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_3635 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_3543 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse3 (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem32#1.base| v_ArrVal_3635))) (let ((.cse2 (select (select .cse3 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (bvule (bvadd (_ bv8 32) (select (select (store (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_#t~mem32#1.base| v_ArrVal_3636) .cse2 v_ArrVal_3543) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)) (select |c_#length| (select (select (store .cse3 .cse2 v_ArrVal_3544) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))))))) is different from false [2024-11-24 01:34:22,985 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1996009047] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 01:34:22,985 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-24 01:34:22,985 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 9 [2024-11-24 01:34:22,985 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [445710537] [2024-11-24 01:34:22,985 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-24 01:34:22,985 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-24 01:34:22,986 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-24 01:34:22,986 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-24 01:34:22,986 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=125, Unknown=10, NotChecked=130, Total=306 [2024-11-24 01:34:22,986 INFO L87 Difference]: Start difference. First operand 2209 states and 2836 transitions. Second operand has 10 states, 8 states have (on average 9.0) internal successors, (72), 10 states have internal predecessors, (72), 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) [2024-11-24 01:34:37,348 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:34:37,349 INFO L93 Difference]: Finished difference Result 2208 states and 2833 transitions. [2024-11-24 01:34:37,349 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-24 01:34:37,349 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 8 states have (on average 9.0) internal successors, (72), 10 states have internal predecessors, (72), 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 116 [2024-11-24 01:34:37,349 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:34:37,354 INFO L225 Difference]: With dead ends: 2208 [2024-11-24 01:34:37,354 INFO L226 Difference]: Without dead ends: 2208 [2024-11-24 01:34:37,355 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 249 GetRequests, 225 SyntacticMatches, 3 SemanticMatches, 21 ConstructedPredicates, 5 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=73, Invalid=242, Unknown=11, NotChecked=180, Total=506 [2024-11-24 01:34:37,355 INFO L435 NwaCegarLoop]: 726 mSDtfsCounter, 908 mSDsluCounter, 3086 mSDsCounter, 0 mSdLazyCounter, 6123 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 913 SdHoareTripleChecker+Valid, 3812 SdHoareTripleChecker+Invalid, 6134 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 6123 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14.0s IncrementalHoareTripleChecker+Time [2024-11-24 01:34:37,356 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [913 Valid, 3812 Invalid, 6134 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 6123 Invalid, 0 Unknown, 0 Unchecked, 14.0s Time] [2024-11-24 01:34:37,358 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2208 states. [2024-11-24 01:34:37,384 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2208 to 2208. [2024-11-24 01:34:37,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2208 states, 1714 states have (on average 1.632438739789965) internal successors, (2798), 2188 states have internal predecessors, (2798), 15 states have call successors, (15), 6 states have call predecessors, (15), 8 states have return successors, (20), 13 states have call predecessors, (20), 15 states have call successors, (20) [2024-11-24 01:34:37,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2208 states to 2208 states and 2833 transitions. [2024-11-24 01:34:37,391 INFO L78 Accepts]: Start accepts. Automaton has 2208 states and 2833 transitions. Word has length 116 [2024-11-24 01:34:37,391 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:34:37,391 INFO L471 AbstractCegarLoop]: Abstraction has 2208 states and 2833 transitions. [2024-11-24 01:34:37,391 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 8 states have (on average 9.0) internal successors, (72), 10 states have internal predecessors, (72), 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) [2024-11-24 01:34:37,391 INFO L276 IsEmpty]: Start isEmpty. Operand 2208 states and 2833 transitions. [2024-11-24 01:34:37,392 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2024-11-24 01:34:37,392 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:34:37,392 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] [2024-11-24 01:34:37,412 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01822a34-db31-455f-9afc-c091d347e9f4/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Ended with exit code 0 [2024-11-24 01:34:37,604 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01822a34-db31-455f-9afc-c091d347e9f4/bin/uautomizer-verify-LYvppIcaGC/cvc4 --incremental --print-success --lang smt (26)] Ended with exit code 0 [2024-11-24 01:34:37,793 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01822a34-db31-455f-9afc-c091d347e9f4/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01822a34-db31-455f-9afc-c091d347e9f4/bin/uautomizer-verify-LYvppIcaGC/cvc4 --incremental --print-success --lang smt [2024-11-24 01:34:37,793 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr78REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 730 more)] === [2024-11-24 01:34:37,793 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:34:37,794 INFO L85 PathProgramCache]: Analyzing trace with hash -1450846248, now seen corresponding path program 1 times [2024-11-24 01:34:37,794 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-24 01:34:37,794 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1537539899] [2024-11-24 01:34:37,794 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:34:37,794 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:34:37,794 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01822a34-db31-455f-9afc-c091d347e9f4/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 01:34:37,796 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01822a34-db31-455f-9afc-c091d347e9f4/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 01:34:37,797 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01822a34-db31-455f-9afc-c091d347e9f4/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2024-11-24 01:34:38,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:34:38,396 INFO L256 TraceCheckSpWp]: Trace formula consists of 816 conjuncts, 60 conjuncts are in the unsatisfiable core [2024-11-24 01:34:38,403 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 01:34:38,408 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 [2024-11-24 01:34:38,531 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2024-11-24 01:34:38,531 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 [2024-11-24 01:34:38,551 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 [2024-11-24 01:34:39,018 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-24 01:34:39,018 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 [2024-11-24 01:34:39,106 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-24 01:34:39,106 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 [2024-11-24 01:34:39,179 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-24 01:34:39,179 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 [2024-11-24 01:34:39,198 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 [2024-11-24 01:34:39,219 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 946 trivial. 0 not checked. [2024-11-24 01:34:39,220 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-24 01:34:39,261 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_4057 (Array (_ BitVec 32) (_ BitVec 32)))) (= (bvadd (_ bv1 1) (select |c_#valid| (select (select (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem35#1.base| v_ArrVal_4057) |c_ULTIMATE.start_main_~user~0#1.base|) (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|)))) (_ bv0 1))) is different from false [2024-11-24 01:34:39,272 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_4057 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (_ bv1 1) (select |c_#valid| (let ((.cse0 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (store |c_#memory_$Pointer$#1.base| (select (select |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse0) v_ArrVal_4057) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0)))))) is different from false [2024-11-24 01:34:39,288 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_4057 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_4056 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (_ bv1 1) (select |c_#valid| (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (let ((.cse0 (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem34#1.base| v_ArrVal_4056))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_4057)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))))) is different from false [2024-11-24 01:34:39,301 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_4057 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_4056 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (_ bv1 1) (select |c_#valid| (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (let ((.cse0 (store |c_#memory_$Pointer$#1.base| (select (select |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_4056))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_4057)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))))) is different from false [2024-11-24 01:34:39,743 INFO L349 Elim1Store]: treesize reduction 7, result has 87.3 percent of original size [2024-11-24 01:34:39,743 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 [2024-11-24 01:34:39,752 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_4057 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_4103 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_4056 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_ULTIMATE.start_main_#t~mem32#1.base| (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (let ((.cse0 (let ((.cse2 (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem32#1.base| v_ArrVal_4103))) (store .cse2 (select (select .cse2 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_4056)))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_4057)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))) is different from false [2024-11-24 01:34:39,754 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-24 01:34:39,754 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1537539899] [2024-11-24 01:34:39,754 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1537539899] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 01:34:39,755 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1931473845] [2024-11-24 01:34:39,755 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:34:39,755 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-24 01:34:39,755 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01822a34-db31-455f-9afc-c091d347e9f4/bin/uautomizer-verify-LYvppIcaGC/cvc4 [2024-11-24 01:34:39,756 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01822a34-db31-455f-9afc-c091d347e9f4/bin/uautomizer-verify-LYvppIcaGC/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-24 01:34:39,773 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01822a34-db31-455f-9afc-c091d347e9f4/bin/uautomizer-verify-LYvppIcaGC/cvc4 --incremental --print-success --lang smt (28)] Waiting until timeout for monitored process [2024-11-24 01:34:51,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:34:51,768 INFO L256 TraceCheckSpWp]: Trace formula consists of 816 conjuncts, 64 conjuncts are in the unsatisfiable core [2024-11-24 01:34:51,775 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 01:34:51,811 INFO L349 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2024-11-24 01:34:51,811 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 14 treesize of output 20 [2024-11-24 01:34:52,087 INFO L349 Elim1Store]: treesize reduction 54, result has 29.9 percent of original size [2024-11-24 01:34:52,087 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 26 treesize of output 43 [2024-11-24 01:34:52,158 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 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 [2024-11-24 01:34:52,373 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 34 treesize of output 16 [2024-11-24 01:34:53,584 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-24 01:34:53,584 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 54 treesize of output 51 [2024-11-24 01:34:53,769 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-24 01:34:53,769 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 54 treesize of output 51 [2024-11-24 01:34:53,921 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-24 01:34:53,921 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 54 treesize of output 51 [2024-11-24 01:34:53,959 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 43 treesize of output 19 [2024-11-24 01:34:54,026 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 946 trivial. 0 not checked. [2024-11-24 01:34:54,026 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-24 01:34:54,105 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_4525 (Array (_ BitVec 32) (_ BitVec 32)))) (= (bvadd (_ bv1 1) (select |c_#valid| (let ((.cse0 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (store |c_#memory_$Pointer$#1.base| (select (select |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse0) v_ArrVal_4525) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0)))) (_ bv0 1))) is different from false [2024-11-24 01:34:54,120 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_4524 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_4525 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (_ bv1 1) (select |c_#valid| (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (let ((.cse0 (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem34#1.base| v_ArrVal_4524))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_4525)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))))) is different from false [2024-11-24 01:34:54,131 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_4524 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_4525 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (_ bv1 1) (select |c_#valid| (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (let ((.cse0 (store |c_#memory_$Pointer$#1.base| (select (select |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_4524))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_4525)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))))) is different from false [2024-11-24 01:34:54,530 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_4524 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_4525 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_4571 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (_ bv1 1) (select |c_#valid| (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (let ((.cse0 (let ((.cse2 (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem32#1.base| v_ArrVal_4571))) (store .cse2 (select (select .cse2 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_4524)))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_4525)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))))) is different from false [2024-11-24 01:34:54,534 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1931473845] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 01:34:54,534 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-24 01:34:54,534 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 10] total 22 [2024-11-24 01:34:54,534 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2099229842] [2024-11-24 01:34:54,534 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-24 01:34:54,535 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-11-24 01:34:54,536 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-24 01:34:54,537 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-11-24 01:34:54,537 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=120, Invalid=501, Unknown=15, NotChecked=486, Total=1122 [2024-11-24 01:34:54,537 INFO L87 Difference]: Start difference. First operand 2208 states and 2833 transitions. Second operand has 23 states, 20 states have (on average 7.5) internal successors, (150), 22 states have internal predecessors, (150), 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) [2024-11-24 01:35:08,719 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:35:08,719 INFO L93 Difference]: Finished difference Result 2879 states and 3327 transitions. [2024-11-24 01:35:08,722 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2024-11-24 01:35:08,722 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 20 states have (on average 7.5) internal successors, (150), 22 states have internal predecessors, (150), 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 119 [2024-11-24 01:35:08,723 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:35:08,729 INFO L225 Difference]: With dead ends: 2879 [2024-11-24 01:35:08,729 INFO L226 Difference]: Without dead ends: 2879 [2024-11-24 01:35:08,730 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 270 GetRequests, 223 SyntacticMatches, 1 SemanticMatches, 46 ConstructedPredicates, 9 IntricatePredicates, 0 DeprecatedPredicates, 372 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=241, Invalid=1259, Unknown=18, NotChecked=738, Total=2256 [2024-11-24 01:35:08,731 INFO L435 NwaCegarLoop]: 628 mSDtfsCounter, 2705 mSDsluCounter, 6025 mSDsCounter, 0 mSdLazyCounter, 6750 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2719 SdHoareTripleChecker+Valid, 6653 SdHoareTripleChecker+Invalid, 6797 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 6750 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13.6s IncrementalHoareTripleChecker+Time [2024-11-24 01:35:08,732 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2719 Valid, 6653 Invalid, 6797 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [47 Valid, 6750 Invalid, 0 Unknown, 0 Unchecked, 13.6s Time] [2024-11-24 01:35:08,734 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2879 states. [2024-11-24 01:35:08,757 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2879 to 2207. [2024-11-24 01:35:08,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2207 states, 1714 states have (on average 1.630688448074679) internal successors, (2795), 2187 states have internal predecessors, (2795), 15 states have call successors, (15), 6 states have call predecessors, (15), 8 states have return successors, (20), 13 states have call predecessors, (20), 15 states have call successors, (20) [2024-11-24 01:35:08,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2207 states to 2207 states and 2830 transitions. [2024-11-24 01:35:08,763 INFO L78 Accepts]: Start accepts. Automaton has 2207 states and 2830 transitions. Word has length 119 [2024-11-24 01:35:08,763 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:35:08,763 INFO L471 AbstractCegarLoop]: Abstraction has 2207 states and 2830 transitions. [2024-11-24 01:35:08,763 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 20 states have (on average 7.5) internal successors, (150), 22 states have internal predecessors, (150), 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) [2024-11-24 01:35:08,764 INFO L276 IsEmpty]: Start isEmpty. Operand 2207 states and 2830 transitions. [2024-11-24 01:35:08,764 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2024-11-24 01:35:08,765 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:35:08,765 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] [2024-11-24 01:35:08,788 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01822a34-db31-455f-9afc-c091d347e9f4/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Ended with exit code 0 [2024-11-24 01:35:08,991 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01822a34-db31-455f-9afc-c091d347e9f4/bin/uautomizer-verify-LYvppIcaGC/cvc4 --incremental --print-success --lang smt (28)] Ended with exit code 0 [2024-11-24 01:35:09,165 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01822a34-db31-455f-9afc-c091d347e9f4/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01822a34-db31-455f-9afc-c091d347e9f4/bin/uautomizer-verify-LYvppIcaGC/cvc4 --incremental --print-success --lang smt [2024-11-24 01:35:09,166 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr79REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 730 more)] === [2024-11-24 01:35:09,167 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:35:09,167 INFO L85 PathProgramCache]: Analyzing trace with hash -1450846247, now seen corresponding path program 1 times [2024-11-24 01:35:09,167 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-24 01:35:09,167 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [520065936] [2024-11-24 01:35:09,168 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:35:09,168 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:35:09,168 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01822a34-db31-455f-9afc-c091d347e9f4/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 01:35:09,170 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01822a34-db31-455f-9afc-c091d347e9f4/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 01:35:09,174 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01822a34-db31-455f-9afc-c091d347e9f4/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2024-11-24 01:35:09,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:35:09,871 INFO L256 TraceCheckSpWp]: Trace formula consists of 816 conjuncts, 114 conjuncts are in the unsatisfiable core [2024-11-24 01:35:09,882 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 01:35:09,889 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 [2024-11-24 01:35:10,000 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 [2024-11-24 01:35:10,013 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2024-11-24 01:35:10,013 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 [2024-11-24 01:35:10,043 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 [2024-11-24 01:35:10,048 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 [2024-11-24 01:35:10,159 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 [2024-11-24 01:35:10,164 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 [2024-11-24 01:35:10,872 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-24 01:35:10,872 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 [2024-11-24 01:35:10,881 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 [2024-11-24 01:35:10,989 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-24 01:35:10,989 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 [2024-11-24 01:35:11,002 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 [2024-11-24 01:35:11,096 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-24 01:35:11,097 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 [2024-11-24 01:35:11,105 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 [2024-11-24 01:35:11,128 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 [2024-11-24 01:35:11,134 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 [2024-11-24 01:35:11,162 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 946 trivial. 0 not checked. [2024-11-24 01:35:11,162 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-24 01:35:11,322 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse0 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (and (forall ((v_ArrVal_5040 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_5041 (Array (_ BitVec 32) (_ BitVec 32)))) (bvule (bvadd (_ bv12 32) (select (select (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_#t~mem35#1.base| v_ArrVal_5040) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0)) (select |c_#length| (select (select (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem35#1.base| v_ArrVal_5041) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0)))) (forall ((v_ArrVal_5040 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse1 (select (select (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_#t~mem35#1.base| v_ArrVal_5040) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0))) (bvule (bvadd (_ bv8 32) .cse1) (bvadd (_ bv12 32) .cse1)))))) is different from false [2024-11-24 01:35:11,347 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$#1.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (and (forall ((v_ArrVal_5040 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_5041 (Array (_ BitVec 32) (_ BitVec 32)))) (bvule (bvadd (select (select (store |c_#memory_$Pointer$#1.offset| .cse0 v_ArrVal_5040) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) (_ bv12 32)) (select |c_#length| (select (select (store |c_#memory_$Pointer$#1.base| .cse0 v_ArrVal_5041) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))) (forall ((v_ArrVal_5040 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse2 (select (select (store |c_#memory_$Pointer$#1.offset| .cse0 v_ArrVal_5040) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (bvule (bvadd .cse2 (_ bv8 32)) (bvadd .cse2 (_ bv12 32)))))))) is different from false [2024-11-24 01:35:11,441 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (and (forall ((v_ArrVal_5040 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_5041 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_5038 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_5039 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse2 (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem34#1.base| v_ArrVal_5039))) (let ((.cse0 (select (select .cse2 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (bvule (bvadd (_ bv12 32) (select (select (store (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_#t~mem34#1.base| v_ArrVal_5038) .cse0 v_ArrVal_5040) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)) (select |c_#length| (select (select (store .cse2 .cse0 v_ArrVal_5041) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))))) (forall ((v_ArrVal_5040 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_5038 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_5039 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse3 (select (select (store (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_#t~mem34#1.base| v_ArrVal_5038) (select (select (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem34#1.base| v_ArrVal_5039) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_5040) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (bvule (bvadd (_ bv8 32) .cse3) (bvadd (_ bv12 32) .cse3)))))) is different from false [2024-11-24 01:35:11,504 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$#1.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (and (forall ((v_ArrVal_5040 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_5038 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_5039 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (select (store (store |c_#memory_$Pointer$#1.offset| .cse1 v_ArrVal_5038) (select (select (store |c_#memory_$Pointer$#1.base| .cse1 v_ArrVal_5039) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2) v_ArrVal_5040) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (bvule (bvadd .cse0 (_ bv8 32)) (bvadd .cse0 (_ bv12 32))))) (forall ((v_ArrVal_5040 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_5041 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_5038 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_5039 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse4 (store |c_#memory_$Pointer$#1.base| .cse1 v_ArrVal_5039))) (let ((.cse3 (select (select .cse4 |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (bvule (bvadd (select (select (store (store |c_#memory_$Pointer$#1.offset| .cse1 v_ArrVal_5038) .cse3 v_ArrVal_5040) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2) (_ bv12 32)) (select |c_#length| (select (select (store .cse4 .cse3 v_ArrVal_5041) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))))))))) is different from false [2024-11-24 01:35:12,967 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse3 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (and (forall ((v_ArrVal_5040 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_5038 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_5039 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_5132 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_5133 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (select (let ((.cse2 (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem32#1.base| v_ArrVal_5133))) (let ((.cse1 (select (select .cse2 |c_ULTIMATE.start_main_~user~0#1.base|) .cse3))) (store (store (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_#t~mem32#1.base| v_ArrVal_5132) .cse1 v_ArrVal_5038) (select (select (store .cse2 .cse1 v_ArrVal_5039) |c_ULTIMATE.start_main_~user~0#1.base|) .cse3) v_ArrVal_5040))) |c_ULTIMATE.start_main_~user~0#1.base|) .cse3))) (bvule (bvadd (_ bv8 32) .cse0) (bvadd (_ bv12 32) .cse0)))) (forall ((v_ArrVal_5040 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_5041 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_5038 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_5039 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_5132 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_5133 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse7 (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem32#1.base| v_ArrVal_5133))) (let ((.cse4 (select (select .cse7 |c_ULTIMATE.start_main_~user~0#1.base|) .cse3))) (let ((.cse6 (store .cse7 .cse4 v_ArrVal_5039))) (let ((.cse5 (select (select .cse6 |c_ULTIMATE.start_main_~user~0#1.base|) .cse3))) (bvule (bvadd (_ bv12 32) (select (select (store (store (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_#t~mem32#1.base| v_ArrVal_5132) .cse4 v_ArrVal_5038) .cse5 v_ArrVal_5040) |c_ULTIMATE.start_main_~user~0#1.base|) .cse3)) (select |c_#length| (select (select (store .cse6 .cse5 v_ArrVal_5041) |c_ULTIMATE.start_main_~user~0#1.base|) .cse3)))))))))) is different from false [2024-11-24 01:35:12,978 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-24 01:35:12,979 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [520065936] [2024-11-24 01:35:12,979 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [520065936] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 01:35:12,979 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1840062499] [2024-11-24 01:35:12,979 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:35:12,979 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-24 01:35:12,979 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01822a34-db31-455f-9afc-c091d347e9f4/bin/uautomizer-verify-LYvppIcaGC/cvc4 [2024-11-24 01:35:12,983 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01822a34-db31-455f-9afc-c091d347e9f4/bin/uautomizer-verify-LYvppIcaGC/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-24 01:35:12,986 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01822a34-db31-455f-9afc-c091d347e9f4/bin/uautomizer-verify-LYvppIcaGC/cvc4 --incremental --print-success --lang smt (30)] Waiting until timeout for monitored process [2024-11-24 01:35:25,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:35:26,079 INFO L256 TraceCheckSpWp]: Trace formula consists of 816 conjuncts, 116 conjuncts are in the unsatisfiable core [2024-11-24 01:35:26,092 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 01:35:26,096 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 [2024-11-24 01:35:26,242 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 [2024-11-24 01:35:26,256 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2024-11-24 01:35:26,256 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 [2024-11-24 01:35:26,271 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 [2024-11-24 01:35:26,282 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 [2024-11-24 01:35:26,342 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 [2024-11-24 01:35:26,346 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 [2024-11-24 01:35:27,062 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-24 01:35:27,063 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 [2024-11-24 01:35:27,073 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 [2024-11-24 01:35:27,144 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-24 01:35:27,145 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 [2024-11-24 01:35:27,153 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 [2024-11-24 01:35:27,208 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-24 01:35:27,208 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 [2024-11-24 01:35:27,216 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 [2024-11-24 01:35:27,241 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 [2024-11-24 01:35:27,248 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 [2024-11-24 01:35:27,256 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 946 trivial. 0 not checked. [2024-11-24 01:35:27,256 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-24 01:35:27,330 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse0 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (and (forall ((v_ArrVal_5602 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_5603 (Array (_ BitVec 32) (_ BitVec 32)))) (bvule (bvadd (_ bv12 32) (select (select (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_#t~mem35#1.base| v_ArrVal_5603) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0)) (select |c_#length| (select (select (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem35#1.base| v_ArrVal_5602) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0)))) (forall ((v_ArrVal_5603 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse1 (select (select (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_#t~mem35#1.base| v_ArrVal_5603) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0))) (bvule (bvadd (_ bv8 32) .cse1) (bvadd (_ bv12 32) .cse1)))))) is different from false [2024-11-24 01:35:27,354 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$#1.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (and (forall ((v_ArrVal_5603 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (select (store |c_#memory_$Pointer$#1.offset| .cse1 v_ArrVal_5603) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (bvule (bvadd (_ bv8 32) .cse0) (bvadd (_ bv12 32) .cse0)))) (forall ((v_ArrVal_5602 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_5603 (Array (_ BitVec 32) (_ BitVec 32)))) (bvule (bvadd (_ bv12 32) (select (select (store |c_#memory_$Pointer$#1.offset| .cse1 v_ArrVal_5603) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2)) (select |c_#length| (select (select (store |c_#memory_$Pointer$#1.base| .cse1 v_ArrVal_5602) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))))))) is different from false [2024-11-24 01:35:27,395 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (and (forall ((v_ArrVal_5601 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_5603 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_5600 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (select (store (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_#t~mem34#1.base| v_ArrVal_5600) (select (select (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem34#1.base| v_ArrVal_5601) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_5603) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (bvule (bvadd (_ bv8 32) .cse0) (bvadd (_ bv12 32) .cse0)))) (forall ((v_ArrVal_5601 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_5602 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_5603 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_5600 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse3 (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem34#1.base| v_ArrVal_5601))) (let ((.cse2 (select (select .cse3 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (bvule (bvadd (_ bv12 32) (select (select (store (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_#t~mem34#1.base| v_ArrVal_5600) .cse2 v_ArrVal_5603) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)) (select |c_#length| (select (select (store .cse3 .cse2 v_ArrVal_5602) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))))))) is different from false [2024-11-24 01:35:27,423 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$#1.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (and (forall ((v_ArrVal_5601 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_5602 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_5603 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_5600 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse3 (store |c_#memory_$Pointer$#1.base| .cse0 v_ArrVal_5601))) (let ((.cse1 (select (select .cse3 |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (bvule (bvadd (_ bv12 32) (select (select (store (store |c_#memory_$Pointer$#1.offset| .cse0 v_ArrVal_5600) .cse1 v_ArrVal_5603) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2)) (select |c_#length| (select (select (store .cse3 .cse1 v_ArrVal_5602) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2)))))) (forall ((v_ArrVal_5601 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_5603 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_5600 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse4 (select (select (store (store |c_#memory_$Pointer$#1.offset| .cse0 v_ArrVal_5600) (select (select (store |c_#memory_$Pointer$#1.base| .cse0 v_ArrVal_5601) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2) v_ArrVal_5603) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (bvule (bvadd (_ bv8 32) .cse4) (bvadd (_ bv12 32) .cse4))))))) is different from false [2024-11-24 01:35:28,792 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse3 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (and (forall ((v_ArrVal_5601 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_5603 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_5600 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_5694 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_5695 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (select (let ((.cse2 (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem32#1.base| v_ArrVal_5695))) (let ((.cse1 (select (select .cse2 |c_ULTIMATE.start_main_~user~0#1.base|) .cse3))) (store (store (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_#t~mem32#1.base| v_ArrVal_5694) .cse1 v_ArrVal_5600) (select (select (store .cse2 .cse1 v_ArrVal_5601) |c_ULTIMATE.start_main_~user~0#1.base|) .cse3) v_ArrVal_5603))) |c_ULTIMATE.start_main_~user~0#1.base|) .cse3))) (bvule (bvadd .cse0 (_ bv8 32)) (bvadd .cse0 (_ bv12 32))))) (forall ((v_ArrVal_5601 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_5602 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_5603 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_5600 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_5694 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_5695 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse7 (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem32#1.base| v_ArrVal_5695))) (let ((.cse4 (select (select .cse7 |c_ULTIMATE.start_main_~user~0#1.base|) .cse3))) (let ((.cse6 (store .cse7 .cse4 v_ArrVal_5601))) (let ((.cse5 (select (select .cse6 |c_ULTIMATE.start_main_~user~0#1.base|) .cse3))) (bvule (bvadd (select (select (store (store (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_#t~mem32#1.base| v_ArrVal_5694) .cse4 v_ArrVal_5600) .cse5 v_ArrVal_5603) |c_ULTIMATE.start_main_~user~0#1.base|) .cse3) (_ bv12 32)) (select |c_#length| (select (select (store .cse6 .cse5 v_ArrVal_5602) |c_ULTIMATE.start_main_~user~0#1.base|) .cse3)))))))))) is different from false [2024-11-24 01:35:28,800 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1840062499] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 01:35:28,800 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-24 01:35:28,801 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 10 [2024-11-24 01:35:28,801 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [297003918] [2024-11-24 01:35:28,801 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-24 01:35:28,801 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-24 01:35:28,801 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-24 01:35:28,801 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-24 01:35:28,801 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=134, Unknown=10, NotChecked=310, Total=506 [2024-11-24 01:35:28,802 INFO L87 Difference]: Start difference. First operand 2207 states and 2830 transitions. Second operand has 11 states, 9 states have (on average 8.333333333333334) internal successors, (75), 11 states have internal predecessors, (75), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-24 01:35:39,546 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:35:39,546 INFO L93 Difference]: Finished difference Result 2206 states and 2827 transitions. [2024-11-24 01:35:39,546 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-24 01:35:39,546 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 9 states have (on average 8.333333333333334) internal successors, (75), 11 states have internal predecessors, (75), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 119 [2024-11-24 01:35:39,547 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:35:39,552 INFO L225 Difference]: With dead ends: 2206 [2024-11-24 01:35:39,552 INFO L226 Difference]: Without dead ends: 2206 [2024-11-24 01:35:39,552 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 262 GetRequests, 232 SyntacticMatches, 3 SemanticMatches, 27 ConstructedPredicates, 10 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=90, Invalid=282, Unknown=10, NotChecked=430, Total=812 [2024-11-24 01:35:39,553 INFO L435 NwaCegarLoop]: 725 mSDtfsCounter, 906 mSDsluCounter, 2241 mSDsCounter, 0 mSdLazyCounter, 4557 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 911 SdHoareTripleChecker+Valid, 2966 SdHoareTripleChecker+Invalid, 4568 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 4557 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.4s IncrementalHoareTripleChecker+Time [2024-11-24 01:35:39,553 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [911 Valid, 2966 Invalid, 4568 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 4557 Invalid, 0 Unknown, 0 Unchecked, 10.4s Time] [2024-11-24 01:35:39,555 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2206 states. [2024-11-24 01:35:39,576 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2206 to 2206. [2024-11-24 01:35:39,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2206 states, 1714 states have (on average 1.6289381563593932) internal successors, (2792), 2186 states have internal predecessors, (2792), 15 states have call successors, (15), 6 states have call predecessors, (15), 8 states have return successors, (20), 13 states have call predecessors, (20), 15 states have call successors, (20) [2024-11-24 01:35:39,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2206 states to 2206 states and 2827 transitions. [2024-11-24 01:35:39,582 INFO L78 Accepts]: Start accepts. Automaton has 2206 states and 2827 transitions. Word has length 119 [2024-11-24 01:35:39,582 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:35:39,582 INFO L471 AbstractCegarLoop]: Abstraction has 2206 states and 2827 transitions. [2024-11-24 01:35:39,582 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 9 states have (on average 8.333333333333334) internal successors, (75), 11 states have internal predecessors, (75), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-24 01:35:39,582 INFO L276 IsEmpty]: Start isEmpty. Operand 2206 states and 2827 transitions. [2024-11-24 01:35:39,583 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2024-11-24 01:35:39,584 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:35:39,584 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] [2024-11-24 01:35:39,613 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01822a34-db31-455f-9afc-c091d347e9f4/bin/uautomizer-verify-LYvppIcaGC/cvc4 --incremental --print-success --lang smt (30)] Ended with exit code 0 [2024-11-24 01:35:39,804 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01822a34-db31-455f-9afc-c091d347e9f4/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Ended with exit code 0 [2024-11-24 01:35:39,984 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01822a34-db31-455f-9afc-c091d347e9f4/bin/uautomizer-verify-LYvppIcaGC/cvc4 --incremental --print-success --lang smt,29 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01822a34-db31-455f-9afc-c091d347e9f4/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:35:39,985 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr82REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 730 more)] === [2024-11-24 01:35:39,985 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:35:39,985 INFO L85 PathProgramCache]: Analyzing trace with hash -1904365662, now seen corresponding path program 1 times [2024-11-24 01:35:39,986 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-24 01:35:39,986 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2015858273] [2024-11-24 01:35:39,986 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:35:39,986 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:35:39,986 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01822a34-db31-455f-9afc-c091d347e9f4/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 01:35:39,987 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01822a34-db31-455f-9afc-c091d347e9f4/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 01:35:39,988 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01822a34-db31-455f-9afc-c091d347e9f4/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2024-11-24 01:35:40,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:35:40,696 INFO L256 TraceCheckSpWp]: Trace formula consists of 845 conjuncts, 61 conjuncts are in the unsatisfiable core [2024-11-24 01:35:40,703 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 01:35:40,847 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2024-11-24 01:35:40,848 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 [2024-11-24 01:35:40,867 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 [2024-11-24 01:35:41,153 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-24 01:35:41,153 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 [2024-11-24 01:35:41,224 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-24 01:35:41,225 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 [2024-11-24 01:35:41,322 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-24 01:35:41,322 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 [2024-11-24 01:35:41,428 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-24 01:35:41,428 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 44 treesize of output 43 [2024-11-24 01:35:41,451 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 [2024-11-24 01:35:41,486 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 946 trivial. 0 not checked. [2024-11-24 01:35:41,486 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-24 01:35:41,622 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_6131 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (_ bv1 1) (select |c_#valid| (let ((.cse0 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (store |c_#memory_$Pointer$#1.base| (select (select |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse0) v_ArrVal_6131) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0)))))) is different from false [2024-11-24 01:35:41,637 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_6130 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_6131 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (_ bv1 1) (select |c_#valid| (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (let ((.cse0 (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem35#1.base| v_ArrVal_6130))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_6131)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))))) is different from false [2024-11-24 01:35:41,646 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_6130 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_6131 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (_ bv1 1) (select |c_#valid| (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (let ((.cse0 (store |c_#memory_$Pointer$#1.base| (select (select |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_6130))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_6131)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))))) is different from false [2024-11-24 01:35:41,675 INFO L349 Elim1Store]: treesize reduction 7, result has 87.3 percent of original size [2024-11-24 01:35:41,675 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 [2024-11-24 01:35:41,685 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_6130 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_6131 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_6129 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_ULTIMATE.start_main_#t~mem34#1.base| (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (let ((.cse0 (let ((.cse2 (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem34#1.base| v_ArrVal_6129))) (store .cse2 (select (select .cse2 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_6130)))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_6131)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))) is different from false [2024-11-24 01:35:41,697 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_6130 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_6131 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_6129 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (let ((.cse3 (select (select |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (= (select (select (let ((.cse0 (let ((.cse2 (store |c_#memory_$Pointer$#1.base| .cse3 v_ArrVal_6129))) (store .cse2 (select (select .cse2 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_6130)))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_6131)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) .cse3)))) is different from false [2024-11-24 01:35:42,097 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_6130 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_6131 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_6129 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_6177 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse3 (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem32#1.base| v_ArrVal_6177)) (.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (let ((.cse4 (select (select .cse3 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (= (select (select (let ((.cse0 (let ((.cse2 (store .cse3 .cse4 v_ArrVal_6129))) (store .cse2 (select (select .cse2 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_6130)))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_6131)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) .cse4)))) is different from false [2024-11-24 01:35:42,100 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-24 01:35:42,100 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2015858273] [2024-11-24 01:35:42,100 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2015858273] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 01:35:42,100 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [598636384] [2024-11-24 01:35:42,100 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:35:42,100 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-24 01:35:42,100 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01822a34-db31-455f-9afc-c091d347e9f4/bin/uautomizer-verify-LYvppIcaGC/cvc4 [2024-11-24 01:35:42,102 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01822a34-db31-455f-9afc-c091d347e9f4/bin/uautomizer-verify-LYvppIcaGC/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-24 01:35:42,103 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01822a34-db31-455f-9afc-c091d347e9f4/bin/uautomizer-verify-LYvppIcaGC/cvc4 --incremental --print-success --lang smt (32)] Waiting until timeout for monitored process [2024-11-24 01:35:58,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:35:58,998 INFO L256 TraceCheckSpWp]: Trace formula consists of 845 conjuncts, 66 conjuncts are in the unsatisfiable core [2024-11-24 01:35:59,005 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 01:35:59,048 INFO L349 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2024-11-24 01:35:59,048 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 14 treesize of output 20 [2024-11-24 01:35:59,367 INFO L349 Elim1Store]: treesize reduction 54, result has 29.9 percent of original size [2024-11-24 01:35:59,367 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 26 treesize of output 43 [2024-11-24 01:35:59,439 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 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 [2024-11-24 01:35:59,646 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 34 treesize of output 16 [2024-11-24 01:36:01,207 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-24 01:36:01,207 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 54 treesize of output 51 [2024-11-24 01:36:01,474 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-24 01:36:01,474 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 54 treesize of output 51 [2024-11-24 01:36:01,658 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-24 01:36:01,658 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 54 treesize of output 51 [2024-11-24 01:36:01,812 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-24 01:36:01,812 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 54 treesize of output 51 [2024-11-24 01:36:01,857 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 43 treesize of output 19 [2024-11-24 01:36:01,955 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 946 trivial. 0 not checked. [2024-11-24 01:36:01,955 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-24 01:36:02,060 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_6131 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_6614 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (_ bv1 1) (select |c_#valid| (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (let ((.cse0 (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem35#1.base| v_ArrVal_6614))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_6131)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))))) is different from false [2024-11-24 01:36:02,072 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_6131 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_6614 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (_ bv1 1) (select |c_#valid| (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (let ((.cse0 (store |c_#memory_$Pointer$#1.base| (select (select |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_6614))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_6131)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))))) is different from false [2024-11-24 01:36:02,092 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_6131 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_6613 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_6614 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (_ bv1 1) (select |c_#valid| (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (let ((.cse0 (let ((.cse2 (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem34#1.base| v_ArrVal_6613))) (store .cse2 (select (select .cse2 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_6614)))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_6131)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))))) is different from false [2024-11-24 01:36:02,106 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_6131 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_6613 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_6614 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (_ bv1 1) (select |c_#valid| (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (let ((.cse0 (let ((.cse2 (store |c_#memory_$Pointer$#1.base| (select (select |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_6613))) (store .cse2 (select (select .cse2 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_6614)))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_6131)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))))) is different from false [2024-11-24 01:36:02,524 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_6131 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_6613 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_6614 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_6661 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (_ bv1 1) (select |c_#valid| (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (let ((.cse0 (let ((.cse2 (let ((.cse3 (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem32#1.base| v_ArrVal_6661))) (store .cse3 (select (select .cse3 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_6613)))) (store .cse2 (select (select .cse2 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_6614)))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_6131)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))))) is different from false [2024-11-24 01:36:02,529 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [598636384] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 01:36:02,529 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-24 01:36:02,529 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11] total 23 [2024-11-24 01:36:02,529 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2110973594] [2024-11-24 01:36:02,529 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-24 01:36:02,529 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2024-11-24 01:36:02,530 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-24 01:36:02,530 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2024-11-24 01:36:02,530 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=136, Invalid=540, Unknown=18, NotChecked=638, Total=1332 [2024-11-24 01:36:02,530 INFO L87 Difference]: Start difference. First operand 2206 states and 2827 transitions. Second operand has 24 states, 21 states have (on average 7.428571428571429) internal successors, (156), 24 states have internal predecessors, (156), 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) [2024-11-24 01:36:14,203 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:36:14,203 INFO L93 Difference]: Finished difference Result 2875 states and 3321 transitions. [2024-11-24 01:36:14,203 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2024-11-24 01:36:14,203 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 21 states have (on average 7.428571428571429) internal successors, (156), 24 states have internal predecessors, (156), 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 [2024-11-24 01:36:14,203 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:36:14,210 INFO L225 Difference]: With dead ends: 2875 [2024-11-24 01:36:14,210 INFO L226 Difference]: Without dead ends: 2875 [2024-11-24 01:36:14,210 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 279 GetRequests, 231 SyntacticMatches, 2 SemanticMatches, 46 ConstructedPredicates, 11 IntricatePredicates, 0 DeprecatedPredicates, 330 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=233, Invalid=1122, Unknown=21, NotChecked=880, Total=2256 [2024-11-24 01:36:14,211 INFO L435 NwaCegarLoop]: 628 mSDtfsCounter, 3464 mSDsluCounter, 4953 mSDsCounter, 0 mSdLazyCounter, 5729 mSolverCounterSat, 70 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3478 SdHoareTripleChecker+Valid, 5581 SdHoareTripleChecker+Invalid, 5799 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 70 IncrementalHoareTripleChecker+Valid, 5729 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.2s IncrementalHoareTripleChecker+Time [2024-11-24 01:36:14,211 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [3478 Valid, 5581 Invalid, 5799 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [70 Valid, 5729 Invalid, 0 Unknown, 0 Unchecked, 11.2s Time] [2024-11-24 01:36:14,213 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2875 states. [2024-11-24 01:36:14,235 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2875 to 2205. [2024-11-24 01:36:14,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2205 states, 1714 states have (on average 1.6271878646441074) internal successors, (2789), 2185 states have internal predecessors, (2789), 15 states have call successors, (15), 6 states have call predecessors, (15), 8 states have return successors, (20), 13 states have call predecessors, (20), 15 states have call successors, (20) [2024-11-24 01:36:14,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2205 states to 2205 states and 2824 transitions. [2024-11-24 01:36:14,241 INFO L78 Accepts]: Start accepts. Automaton has 2205 states and 2824 transitions. Word has length 122 [2024-11-24 01:36:14,241 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:36:14,241 INFO L471 AbstractCegarLoop]: Abstraction has 2205 states and 2824 transitions. [2024-11-24 01:36:14,241 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 21 states have (on average 7.428571428571429) internal successors, (156), 24 states have internal predecessors, (156), 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) [2024-11-24 01:36:14,242 INFO L276 IsEmpty]: Start isEmpty. Operand 2205 states and 2824 transitions. [2024-11-24 01:36:14,242 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2024-11-24 01:36:14,243 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:36:14,243 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] [2024-11-24 01:36:14,265 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01822a34-db31-455f-9afc-c091d347e9f4/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Forceful destruction successful, exit code 0 [2024-11-24 01:36:14,473 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01822a34-db31-455f-9afc-c091d347e9f4/bin/uautomizer-verify-LYvppIcaGC/cvc4 --incremental --print-success --lang smt (32)] Ended with exit code 0 [2024-11-24 01:36:14,643 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01822a34-db31-455f-9afc-c091d347e9f4/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,32 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01822a34-db31-455f-9afc-c091d347e9f4/bin/uautomizer-verify-LYvppIcaGC/cvc4 --incremental --print-success --lang smt [2024-11-24 01:36:14,643 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr83REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 730 more)] === [2024-11-24 01:36:14,644 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:36:14,644 INFO L85 PathProgramCache]: Analyzing trace with hash -1904365661, now seen corresponding path program 1 times [2024-11-24 01:36:14,644 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-24 01:36:14,644 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [66202900] [2024-11-24 01:36:14,644 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:36:14,644 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:36:14,644 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01822a34-db31-455f-9afc-c091d347e9f4/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 01:36:14,646 INFO L229 MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01822a34-db31-455f-9afc-c091d347e9f4/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 01:36:14,647 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01822a34-db31-455f-9afc-c091d347e9f4/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Waiting until timeout for monitored process [2024-11-24 01:36:15,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:36:15,417 INFO L256 TraceCheckSpWp]: Trace formula consists of 845 conjuncts, 116 conjuncts are in the unsatisfiable core [2024-11-24 01:36:15,427 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 01:36:15,549 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2024-11-24 01:36:15,549 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 [2024-11-24 01:36:15,557 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 [2024-11-24 01:36:15,579 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 [2024-11-24 01:36:15,586 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 [2024-11-24 01:36:15,683 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 [2024-11-24 01:36:15,688 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 [2024-11-24 01:36:16,312 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-24 01:36:16,312 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 [2024-11-24 01:36:16,320 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 [2024-11-24 01:36:16,417 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-24 01:36:16,417 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 [2024-11-24 01:36:16,428 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 [2024-11-24 01:36:16,527 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-24 01:36:16,527 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 [2024-11-24 01:36:16,535 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 [2024-11-24 01:36:16,623 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-24 01:36:16,623 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 [2024-11-24 01:36:16,630 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 [2024-11-24 01:36:16,655 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 13 [2024-11-24 01:36:16,661 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 [2024-11-24 01:36:16,687 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 946 trivial. 0 not checked. [2024-11-24 01:36:16,687 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-24 01:36:16,981 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$#1.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (and (forall ((v_ArrVal_7146 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (select (store |c_#memory_$Pointer$#1.offset| .cse1 v_ArrVal_7146) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (bvule (bvadd (_ bv20 32) .cse0) (bvadd (_ bv24 32) .cse0)))) (forall ((v_ArrVal_7146 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7147 (Array (_ BitVec 32) (_ BitVec 32)))) (bvule (bvadd (_ bv24 32) (select (select (store |c_#memory_$Pointer$#1.offset| .cse1 v_ArrVal_7146) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2)) (select |c_#length| (select (select (store |c_#memory_$Pointer$#1.base| .cse1 v_ArrVal_7147) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))))))) is different from false [2024-11-24 01:36:17,070 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (and (forall ((v_ArrVal_7144 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7145 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7146 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7147 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse2 (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem35#1.base| v_ArrVal_7144))) (let ((.cse0 (select (select .cse2 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (bvule (bvadd (_ bv24 32) (select (select (store (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_#t~mem35#1.base| v_ArrVal_7145) .cse0 v_ArrVal_7146) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)) (select |c_#length| (select (select (store .cse2 .cse0 v_ArrVal_7147) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))))) (forall ((v_ArrVal_7144 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7145 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7146 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse3 (select (select (store (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_#t~mem35#1.base| v_ArrVal_7145) (select (select (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem35#1.base| v_ArrVal_7144) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_7146) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (bvule (bvadd (_ bv20 32) .cse3) (bvadd (_ bv24 32) .cse3)))))) is different from false [2024-11-24 01:36:17,129 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$#1.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (and (forall ((v_ArrVal_7144 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7145 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7146 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7147 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse3 (store |c_#memory_$Pointer$#1.base| .cse0 v_ArrVal_7144))) (let ((.cse1 (select (select .cse3 |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (bvule (bvadd (select (select (store (store |c_#memory_$Pointer$#1.offset| .cse0 v_ArrVal_7145) .cse1 v_ArrVal_7146) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2) (_ bv24 32)) (select |c_#length| (select (select (store .cse3 .cse1 v_ArrVal_7147) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2)))))) (forall ((v_ArrVal_7144 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7145 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7146 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse4 (select (select (store (store |c_#memory_$Pointer$#1.offset| .cse0 v_ArrVal_7145) (select (select (store |c_#memory_$Pointer$#1.base| .cse0 v_ArrVal_7144) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2) v_ArrVal_7146) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (bvule (bvadd .cse4 (_ bv20 32)) (bvadd .cse4 (_ bv24 32)))))))) is different from false [2024-11-24 01:36:17,543 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse3 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (and (forall ((v_ArrVal_7142 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7143 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7144 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7145 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7146 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (select (let ((.cse2 (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem34#1.base| v_ArrVal_7142))) (let ((.cse1 (select (select .cse2 |c_ULTIMATE.start_main_~user~0#1.base|) .cse3))) (store (store (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_#t~mem34#1.base| v_ArrVal_7143) .cse1 v_ArrVal_7145) (select (select (store .cse2 .cse1 v_ArrVal_7144) |c_ULTIMATE.start_main_~user~0#1.base|) .cse3) v_ArrVal_7146))) |c_ULTIMATE.start_main_~user~0#1.base|) .cse3))) (bvule (bvadd (_ bv20 32) .cse0) (bvadd (_ bv24 32) .cse0)))) (forall ((v_ArrVal_7142 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7143 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7144 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7145 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7146 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7147 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse7 (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem34#1.base| v_ArrVal_7142))) (let ((.cse4 (select (select .cse7 |c_ULTIMATE.start_main_~user~0#1.base|) .cse3))) (let ((.cse6 (store .cse7 .cse4 v_ArrVal_7144))) (let ((.cse5 (select (select .cse6 |c_ULTIMATE.start_main_~user~0#1.base|) .cse3))) (bvule (bvadd (_ bv24 32) (select (select (store (store (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_#t~mem34#1.base| v_ArrVal_7143) .cse4 v_ArrVal_7145) .cse5 v_ArrVal_7146) |c_ULTIMATE.start_main_~user~0#1.base|) .cse3)) (select |c_#length| (select (select (store .cse6 .cse5 v_ArrVal_7147) |c_ULTIMATE.start_main_~user~0#1.base|) .cse3)))))))))) is different from false [2024-11-24 01:36:26,328 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse4 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (and (forall ((v_ArrVal_7142 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7143 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7238 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7239 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7144 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7145 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7146 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (select (let ((.cse5 (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem32#1.base| v_ArrVal_7239))) (let ((.cse1 (select (select .cse5 |c_ULTIMATE.start_main_~user~0#1.base|) .cse4))) (let ((.cse3 (store .cse5 .cse1 v_ArrVal_7142))) (let ((.cse2 (select (select .cse3 |c_ULTIMATE.start_main_~user~0#1.base|) .cse4))) (store (store (store (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_#t~mem32#1.base| v_ArrVal_7238) .cse1 v_ArrVal_7143) .cse2 v_ArrVal_7145) (select (select (store .cse3 .cse2 v_ArrVal_7144) |c_ULTIMATE.start_main_~user~0#1.base|) .cse4) v_ArrVal_7146))))) |c_ULTIMATE.start_main_~user~0#1.base|) .cse4))) (bvule (bvadd (_ bv20 32) .cse0) (bvadd (_ bv24 32) .cse0)))) (forall ((v_ArrVal_7142 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7143 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7238 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7239 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7144 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7145 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7146 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7147 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse11 (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem32#1.base| v_ArrVal_7239))) (let ((.cse6 (select (select .cse11 |c_ULTIMATE.start_main_~user~0#1.base|) .cse4))) (let ((.cse10 (store .cse11 .cse6 v_ArrVal_7142))) (let ((.cse7 (select (select .cse10 |c_ULTIMATE.start_main_~user~0#1.base|) .cse4))) (let ((.cse9 (store .cse10 .cse7 v_ArrVal_7144))) (let ((.cse8 (select (select .cse9 |c_ULTIMATE.start_main_~user~0#1.base|) .cse4))) (bvule (bvadd (_ bv24 32) (select (select (store (store (store (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_#t~mem32#1.base| v_ArrVal_7238) .cse6 v_ArrVal_7143) .cse7 v_ArrVal_7145) .cse8 v_ArrVal_7146) |c_ULTIMATE.start_main_~user~0#1.base|) .cse4)) (select |c_#length| (select (select (store .cse9 .cse8 v_ArrVal_7147) |c_ULTIMATE.start_main_~user~0#1.base|) .cse4)))))))))))) is different from false [2024-11-24 01:36:26,368 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-24 01:36:26,368 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [66202900] [2024-11-24 01:36:26,368 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [66202900] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 01:36:26,368 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [448140750] [2024-11-24 01:36:26,368 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:36:26,369 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-24 01:36:26,369 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01822a34-db31-455f-9afc-c091d347e9f4/bin/uautomizer-verify-LYvppIcaGC/cvc4 [2024-11-24 01:36:26,370 INFO L229 MonitoredProcess]: Starting monitored process 34 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01822a34-db31-455f-9afc-c091d347e9f4/bin/uautomizer-verify-LYvppIcaGC/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-24 01:36:26,372 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01822a34-db31-455f-9afc-c091d347e9f4/bin/uautomizer-verify-LYvppIcaGC/cvc4 --incremental --print-success --lang smt (34)] Waiting until timeout for monitored process [2024-11-24 01:36:41,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:36:42,039 INFO L256 TraceCheckSpWp]: Trace formula consists of 845 conjuncts, 119 conjuncts are in the unsatisfiable core [2024-11-24 01:36:42,049 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 01:36:42,095 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 [2024-11-24 01:36:44,645 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2024-11-24 01:36:44,645 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 [2024-11-24 01:36:44,739 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 [2024-11-24 01:36:44,884 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 [2024-11-24 01:36:45,032 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 [2024-11-24 01:36:45,759 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 [2024-11-24 01:36:45,809 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 [2024-11-24 01:36:55,294 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-24 01:36:55,294 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 62 treesize of output 57 [2024-11-24 01:36:55,387 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 [2024-11-24 01:36:56,306 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-24 01:36:56,307 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 [2024-11-24 01:36:56,401 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 [2024-11-24 01:36:57,112 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-24 01:36:57,113 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 [2024-11-24 01:36:57,206 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 [2024-11-24 01:36:57,928 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-24 01:36:57,929 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 [2024-11-24 01:36:58,017 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 [2024-11-24 01:36:58,334 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 [2024-11-24 01:36:58,426 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 [2024-11-24 01:36:58,427 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 946 trivial. 0 not checked. [2024-11-24 01:36:58,427 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-24 01:36:59,898 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (and (forall ((v_ArrVal_7724 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7723 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7146 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (select (store (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_#t~mem35#1.base| v_ArrVal_7724) (select (select (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem35#1.base| v_ArrVal_7723) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_7146) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (bvule (bvadd (_ bv20 32) .cse0) (bvadd (_ bv24 32) .cse0)))) (forall ((v_ArrVal_7724 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7723 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7146 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7147 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse3 (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem35#1.base| v_ArrVal_7723))) (let ((.cse2 (select (select .cse3 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (bvule (bvadd (_ bv24 32) (select (select (store (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_#t~mem35#1.base| v_ArrVal_7724) .cse2 v_ArrVal_7146) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)) (select |c_#length| (select (select (store .cse3 .cse2 v_ArrVal_7147) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))))))) is different from false [2024-11-24 01:37:00,108 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$#1.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (and (forall ((v_ArrVal_7724 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7723 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7146 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (select (store (store |c_#memory_$Pointer$#1.offset| .cse1 v_ArrVal_7724) (select (select (store |c_#memory_$Pointer$#1.base| .cse1 v_ArrVal_7723) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2) v_ArrVal_7146) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (bvule (bvadd .cse0 (_ bv20 32)) (bvadd .cse0 (_ bv24 32))))) (forall ((v_ArrVal_7724 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7723 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7146 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7147 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse4 (store |c_#memory_$Pointer$#1.base| .cse1 v_ArrVal_7723))) (let ((.cse3 (select (select .cse4 |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (bvule (bvadd (select (select (store (store |c_#memory_$Pointer$#1.offset| .cse1 v_ArrVal_7724) .cse3 v_ArrVal_7146) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2) (_ bv24 32)) (select |c_#length| (select (select (store .cse4 .cse3 v_ArrVal_7147) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))))))))) is different from false [2024-11-24 01:37:00,646 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse2 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (and (forall ((v_ArrVal_7724 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7723 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7722 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7721 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7146 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7147 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse4 (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem34#1.base| v_ArrVal_7721))) (let ((.cse0 (select (select .cse4 |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (let ((.cse3 (store .cse4 .cse0 v_ArrVal_7723))) (let ((.cse1 (select (select .cse3 |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (bvule (bvadd (select (select (store (store (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_#t~mem34#1.base| v_ArrVal_7722) .cse0 v_ArrVal_7724) .cse1 v_ArrVal_7146) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2) (_ bv24 32)) (select |c_#length| (select (select (store .cse3 .cse1 v_ArrVal_7147) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2)))))))) (forall ((v_ArrVal_7724 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7723 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7722 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7721 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7146 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse5 (select (select (let ((.cse7 (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem34#1.base| v_ArrVal_7721))) (let ((.cse6 (select (select .cse7 |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (store (store (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_#t~mem34#1.base| v_ArrVal_7722) .cse6 v_ArrVal_7724) (select (select (store .cse7 .cse6 v_ArrVal_7723) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2) v_ArrVal_7146))) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (bvule (bvadd .cse5 (_ bv20 32)) (bvadd .cse5 (_ bv24 32))))))) is different from false [2024-11-24 01:37:15,959 WARN L286 SmtUtils]: Spent 5.70s on a formula simplification that was a NOOP. DAG size: 356 (called from [L 276] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2024-11-24 01:37:20,933 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse3 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (and (forall ((v_ArrVal_7818 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7817 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7724 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7723 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7722 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7721 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7146 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7147 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse6 (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem32#1.base| v_ArrVal_7818))) (let ((.cse0 (select (select .cse6 |c_ULTIMATE.start_main_~user~0#1.base|) .cse3))) (let ((.cse5 (store .cse6 .cse0 v_ArrVal_7721))) (let ((.cse1 (select (select .cse5 |c_ULTIMATE.start_main_~user~0#1.base|) .cse3))) (let ((.cse4 (store .cse5 .cse1 v_ArrVal_7723))) (let ((.cse2 (select (select .cse4 |c_ULTIMATE.start_main_~user~0#1.base|) .cse3))) (bvule (bvadd (_ bv24 32) (select (select (store (store (store (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_#t~mem32#1.base| v_ArrVal_7817) .cse0 v_ArrVal_7722) .cse1 v_ArrVal_7724) .cse2 v_ArrVal_7146) |c_ULTIMATE.start_main_~user~0#1.base|) .cse3)) (select |c_#length| (select (select (store .cse4 .cse2 v_ArrVal_7147) |c_ULTIMATE.start_main_~user~0#1.base|) .cse3)))))))))) (forall ((v_ArrVal_7818 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7817 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7724 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7723 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7722 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7721 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7146 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse7 (select (select (let ((.cse11 (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem32#1.base| v_ArrVal_7818))) (let ((.cse8 (select (select .cse11 |c_ULTIMATE.start_main_~user~0#1.base|) .cse3))) (let ((.cse10 (store .cse11 .cse8 v_ArrVal_7721))) (let ((.cse9 (select (select .cse10 |c_ULTIMATE.start_main_~user~0#1.base|) .cse3))) (store (store (store (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_#t~mem32#1.base| v_ArrVal_7817) .cse8 v_ArrVal_7722) .cse9 v_ArrVal_7724) (select (select (store .cse10 .cse9 v_ArrVal_7723) |c_ULTIMATE.start_main_~user~0#1.base|) .cse3) v_ArrVal_7146))))) |c_ULTIMATE.start_main_~user~0#1.base|) .cse3))) (bvule (bvadd (_ bv20 32) .cse7) (bvadd (_ bv24 32) .cse7)))))) is different from false [2024-11-24 01:37:20,977 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [448140750] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 01:37:20,977 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-24 01:37:20,977 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 11 [2024-11-24 01:37:20,978 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [192840187] [2024-11-24 01:37:20,978 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-24 01:37:20,978 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-24 01:37:20,978 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-24 01:37:20,978 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-24 01:37:20,978 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=205, Unknown=32, NotChecked=342, Total=650 [2024-11-24 01:37:20,978 INFO L87 Difference]: Start difference. First operand 2205 states and 2824 transitions. Second operand has 12 states, 10 states have (on average 8.1) internal successors, (81), 12 states have internal predecessors, (81), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-24 01:40:00,306 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:40:00,306 INFO L93 Difference]: Finished difference Result 2204 states and 2821 transitions. [2024-11-24 01:40:00,308 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-24 01:40:00,308 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 10 states have (on average 8.1) internal successors, (81), 12 states have internal predecessors, (81), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 122 [2024-11-24 01:40:00,308 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:40:00,316 INFO L225 Difference]: With dead ends: 2204 [2024-11-24 01:40:00,316 INFO L226 Difference]: Without dead ends: 2204 [2024-11-24 01:40:00,316 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 275 GetRequests, 240 SyntacticMatches, 4 SemanticMatches, 31 ConstructedPredicates, 9 IntricatePredicates, 0 DeprecatedPredicates, 95 ImplicationChecksByTransitivity, 27.4s TimeCoverageRelationStatistics Valid=129, Invalid=426, Unknown=33, NotChecked=468, Total=1056 [2024-11-24 01:40:00,317 INFO L435 NwaCegarLoop]: 724 mSDtfsCounter, 904 mSDsluCounter, 2682 mSDsCounter, 0 mSdLazyCounter, 5330 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 152.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 909 SdHoareTripleChecker+Valid, 3406 SdHoareTripleChecker+Invalid, 5341 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 5330 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 154.5s IncrementalHoareTripleChecker+Time [2024-11-24 01:40:00,317 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [909 Valid, 3406 Invalid, 5341 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [11 Valid, 5330 Invalid, 0 Unknown, 0 Unchecked, 154.5s Time] [2024-11-24 01:40:00,320 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2204 states. [2024-11-24 01:40:00,349 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2204 to 2204. [2024-11-24 01:40:00,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2204 states, 1714 states have (on average 1.6254375729288215) internal successors, (2786), 2184 states have internal predecessors, (2786), 15 states have call successors, (15), 6 states have call predecessors, (15), 8 states have return successors, (20), 13 states have call predecessors, (20), 15 states have call successors, (20) [2024-11-24 01:40:00,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2204 states to 2204 states and 2821 transitions. [2024-11-24 01:40:00,357 INFO L78 Accepts]: Start accepts. Automaton has 2204 states and 2821 transitions. Word has length 122 [2024-11-24 01:40:00,358 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:40:00,358 INFO L471 AbstractCegarLoop]: Abstraction has 2204 states and 2821 transitions. [2024-11-24 01:40:00,358 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 10 states have (on average 8.1) internal successors, (81), 12 states have internal predecessors, (81), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-24 01:40:00,358 INFO L276 IsEmpty]: Start isEmpty. Operand 2204 states and 2821 transitions. [2024-11-24 01:40:00,361 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2024-11-24 01:40:00,361 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:40:00,361 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] [2024-11-24 01:40:00,406 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01822a34-db31-455f-9afc-c091d347e9f4/bin/uautomizer-verify-LYvppIcaGC/cvc4 --incremental --print-success --lang smt (34)] Ended with exit code 0 [2024-11-24 01:40:00,587 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01822a34-db31-455f-9afc-c091d347e9f4/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Ended with exit code 0 [2024-11-24 01:40:00,762 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01822a34-db31-455f-9afc-c091d347e9f4/bin/uautomizer-verify-LYvppIcaGC/cvc4 --incremental --print-success --lang smt,33 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01822a34-db31-455f-9afc-c091d347e9f4/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:40:00,762 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr86REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 730 more)] === [2024-11-24 01:40:00,763 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:40:00,763 INFO L85 PathProgramCache]: Analyzing trace with hash -1282510236, now seen corresponding path program 1 times [2024-11-24 01:40:00,764 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-24 01:40:00,764 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2008641357] [2024-11-24 01:40:00,764 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:40:00,765 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:40:00,765 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01822a34-db31-455f-9afc-c091d347e9f4/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 01:40:00,767 INFO L229 MonitoredProcess]: Starting monitored process 35 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01822a34-db31-455f-9afc-c091d347e9f4/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 01:40:00,770 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01822a34-db31-455f-9afc-c091d347e9f4/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Waiting until timeout for monitored process [2024-11-24 01:40:01,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:40:01,681 INFO L256 TraceCheckSpWp]: Trace formula consists of 882 conjuncts, 65 conjuncts are in the unsatisfiable core [2024-11-24 01:40:01,688 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 01:40:04,710 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2024-11-24 01:40:04,710 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 [2024-11-24 01:40:05,061 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 [2024-11-24 01:40:10,851 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-24 01:40:10,851 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 [2024-11-24 01:40:11,942 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-24 01:40:11,943 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 [2024-11-24 01:40:13,027 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-24 01:40:13,027 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 [2024-11-24 01:40:14,161 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-24 01:40:14,161 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 [2024-11-24 01:40:16,218 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-24 01:40:16,218 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 [2024-11-24 01:40:16,509 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 [2024-11-24 01:40:17,698 INFO L349 Elim1Store]: treesize reduction 24, result has 33.3 percent of original size [2024-11-24 01:40:17,698 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 21 treesize of output 20 [2024-11-24 01:40:17,754 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 946 trivial. 0 not checked. [2024-11-24 01:40:17,754 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-24 01:40:19,490 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_8272 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (_ bv1 1) (select |c_#valid| (select (select (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem37#1.base| v_ArrVal_8272) |c_ULTIMATE.start_main_~user~0#1.base|) (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|)))))) is different from false [2024-11-24 01:40:19,619 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_8272 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (_ bv1 1) (select |c_#valid| (let ((.cse0 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (store |c_#memory_$Pointer$#1.base| (select (select |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse0) v_ArrVal_8272) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0)))))) is different from false [2024-11-24 01:40:19,961 INFO L349 Elim1Store]: treesize reduction 7, result has 77.4 percent of original size [2024-11-24 01:40:19,961 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 [2024-11-24 01:40:20,062 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_8272 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8271 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_ULTIMATE.start_main_#t~mem36#1.base| (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (let ((.cse0 (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem36#1.base| v_ArrVal_8271))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_8272)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))) is different from false [2024-11-24 01:40:20,192 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_8272 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8271 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (let ((.cse2 (select (select |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (= (select (select (let ((.cse0 (store |c_#memory_$Pointer$#1.base| .cse2 v_ArrVal_8271))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_8272)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) .cse2)))) is different from false [2024-11-24 01:40:20,382 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_8272 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8271 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8270 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse2 (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem35#1.base| v_ArrVal_8270)) (.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (let ((.cse3 (select (select .cse2 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (= (select (select (let ((.cse0 (store .cse2 .cse3 v_ArrVal_8271))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_8272)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) .cse3)))) is different from false [2024-11-24 01:40:20,514 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_8272 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8271 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8270 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (let ((.cse2 (store |c_#memory_$Pointer$#1.base| (select (select |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_8270))) (let ((.cse3 (select (select .cse2 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (= (select (select (let ((.cse0 (store .cse2 .cse3 v_ArrVal_8271))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_8272)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) .cse3))))) is different from false [2024-11-24 01:40:20,706 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_8272 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8271 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8270 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8269 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse2 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (let ((.cse3 (let ((.cse4 (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem34#1.base| v_ArrVal_8269))) (store .cse4 (select (select .cse4 |c_ULTIMATE.start_main_~user~0#1.base|) .cse2) v_ArrVal_8270)))) (let ((.cse0 (select (select .cse3 |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (= .cse0 (select (select (let ((.cse1 (store .cse3 .cse0 v_ArrVal_8271))) (store .cse1 (select (select .cse1 |c_ULTIMATE.start_main_~user~0#1.base|) .cse2) v_ArrVal_8272)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2)))))) is different from false [2024-11-24 01:40:20,843 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_8272 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8271 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8270 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8269 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse2 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (let ((.cse3 (let ((.cse4 (store |c_#memory_$Pointer$#1.base| (select (select |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse2) v_ArrVal_8269))) (store .cse4 (select (select .cse4 |c_ULTIMATE.start_main_~user~0#1.base|) .cse2) v_ArrVal_8270)))) (let ((.cse0 (select (select .cse3 |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (= .cse0 (select (select (let ((.cse1 (store .cse3 .cse0 v_ArrVal_8271))) (store .cse1 (select (select .cse1 |c_ULTIMATE.start_main_~user~0#1.base|) .cse2) v_ArrVal_8272)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2)))))) is different from false [2024-11-24 01:40:24,400 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_8272 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8271 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8319 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8270 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8269 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse2 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (let ((.cse3 (let ((.cse4 (let ((.cse5 (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem32#1.base| v_ArrVal_8319))) (store .cse5 (select (select .cse5 |c_ULTIMATE.start_main_~user~0#1.base|) .cse2) v_ArrVal_8269)))) (store .cse4 (select (select .cse4 |c_ULTIMATE.start_main_~user~0#1.base|) .cse2) v_ArrVal_8270)))) (let ((.cse0 (select (select .cse3 |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (= .cse0 (select (select (let ((.cse1 (store .cse3 .cse0 v_ArrVal_8271))) (store .cse1 (select (select .cse1 |c_ULTIMATE.start_main_~user~0#1.base|) .cse2) v_ArrVal_8272)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2)))))) is different from false [2024-11-24 01:40:24,431 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-24 01:40:24,431 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2008641357] [2024-11-24 01:40:24,431 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2008641357] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 01:40:24,431 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [712409652] [2024-11-24 01:40:24,431 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:40:24,431 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-24 01:40:24,431 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01822a34-db31-455f-9afc-c091d347e9f4/bin/uautomizer-verify-LYvppIcaGC/cvc4 [2024-11-24 01:40:24,433 INFO L229 MonitoredProcess]: Starting monitored process 36 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01822a34-db31-455f-9afc-c091d347e9f4/bin/uautomizer-verify-LYvppIcaGC/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-24 01:40:24,435 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_01822a34-db31-455f-9afc-c091d347e9f4/bin/uautomizer-verify-LYvppIcaGC/cvc4 --incremental --print-success --lang smt (36)] Waiting until timeout for monitored process [2024-11-24 01:40:35,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:40:35,748 INFO L256 TraceCheckSpWp]: Trace formula consists of 882 conjuncts, 71 conjuncts are in the unsatisfiable core [2024-11-24 01:40:35,756 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 01:40:36,933 INFO L349 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2024-11-24 01:40:36,934 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 14 treesize of output 20 [2024-11-24 01:40:44,313 INFO L349 Elim1Store]: treesize reduction 54, result has 29.9 percent of original size [2024-11-24 01:40:44,313 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 26 treesize of output 43 [2024-11-24 01:40:45,498 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 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 [2024-11-24 01:40:49,178 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 34 treesize of output 16 [2024-11-24 01:41:13,268 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-24 01:41:13,268 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 54 treesize of output 51 [2024-11-24 01:41:16,593 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-24 01:41:16,594 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 54 treesize of output 51 [2024-11-24 01:41:19,045 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-24 01:41:19,046 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 54 treesize of output 51 [2024-11-24 01:41:21,370 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-24 01:41:21,370 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 54 treesize of output 51 [2024-11-24 01:41:24,152 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-24 01:41:24,153 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 54 treesize of output 51 [2024-11-24 01:41:24,695 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 43 treesize of output 19 [2024-11-24 01:41:27,845 INFO L349 Elim1Store]: treesize reduction 82, result has 29.3 percent of original size [2024-11-24 01:41:27,845 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 7 case distinctions, treesize of input 35 treesize of output 52 [2024-11-24 01:41:28,097 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 946 trivial. 0 not checked. [2024-11-24 01:41:28,097 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-24 01:41:31,088 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_8775 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (_ bv1 1) (select |c_#valid| (let ((.cse0 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (store |c_#memory_$Pointer$#1.base| (select (select |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse0) v_ArrVal_8775) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0)))))) is different from false [2024-11-24 01:41:31,278 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_8775 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8774 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (_ bv1 1) (select |c_#valid| (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (let ((.cse0 (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem36#1.base| v_ArrVal_8774))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_8775)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))))) is different from false [2024-11-24 01:41:31,431 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_8775 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8774 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (_ bv1 1) (select |c_#valid| (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (let ((.cse0 (store |c_#memory_$Pointer$#1.base| (select (select |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_8774))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_8775)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))))) is different from false [2024-11-24 01:41:31,681 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_8775 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8774 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8773 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (_ bv1 1) (select |c_#valid| (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (let ((.cse0 (let ((.cse2 (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem35#1.base| v_ArrVal_8773))) (store .cse2 (select (select .cse2 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_8774)))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_8775)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))))) is different from false [2024-11-24 01:41:31,821 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_8775 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8774 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8773 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (_ bv1 1) (select |c_#valid| (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (let ((.cse0 (let ((.cse2 (store |c_#memory_$Pointer$#1.base| (select (select |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_8773))) (store .cse2 (select (select .cse2 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_8774)))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_8775)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))))) is different from false [2024-11-24 01:41:32,023 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_8775 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8774 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8773 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8772 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (_ bv1 1) (select |c_#valid| (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (let ((.cse0 (let ((.cse2 (let ((.cse3 (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem34#1.base| v_ArrVal_8772))) (store .cse3 (select (select .cse3 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_8773)))) (store .cse2 (select (select .cse2 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_8774)))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_8775)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))))) is different from false [2024-11-24 01:41:32,162 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_8775 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8774 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8773 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8772 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (_ bv1 1) (select |c_#valid| (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (let ((.cse0 (let ((.cse2 (let ((.cse3 (store |c_#memory_$Pointer$#1.base| (select (select |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_8772))) (store .cse3 (select (select .cse3 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_8773)))) (store .cse2 (select (select .cse2 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_8774)))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_8775)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))))) is different from false [2024-11-24 01:41:36,971 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [712409652] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 01:41:36,971 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-24 01:41:36,971 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 26 [2024-11-24 01:41:36,971 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [250773579] [2024-11-24 01:41:36,971 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-24 01:41:36,971 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2024-11-24 01:41:36,971 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-24 01:41:36,972 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2024-11-24 01:41:36,972 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=167, Invalid=740, Unknown=27, NotChecked=1136, Total=2070 [2024-11-24 01:41:36,973 INFO L87 Difference]: Start difference. First operand 2204 states and 2821 transitions. Second operand has 27 states, 24 states have (on average 6.833333333333333) internal successors, (164), 26 states have internal predecessors, (164), 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)