./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/uthash-2.0.2/uthash_FNV_nondet_test1-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version d790fecc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_baab3a94-b378-48f0-85dc-9d3ad2a813c3/bin/uautomizer-verify-aQ6SnzHsRB/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_baab3a94-b378-48f0-85dc-9d3ad2a813c3/bin/uautomizer-verify-aQ6SnzHsRB/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_baab3a94-b378-48f0-85dc-9d3ad2a813c3/bin/uautomizer-verify-aQ6SnzHsRB/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_baab3a94-b378-48f0-85dc-9d3ad2a813c3/bin/uautomizer-verify-aQ6SnzHsRB/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_FNV_nondet_test1-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_baab3a94-b378-48f0-85dc-9d3ad2a813c3/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_baab3a94-b378-48f0-85dc-9d3ad2a813c3/bin/uautomizer-verify-aQ6SnzHsRB --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 112ef0f8366461020cac5f2ac7dec2d7e41f31b24e653cd7734885d2bb23b087 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-11-28 03:44:06,988 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-28 03:44:07,083 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_baab3a94-b378-48f0-85dc-9d3ad2a813c3/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2024-11-28 03:44:07,089 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-28 03:44:07,089 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-28 03:44:07,129 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-28 03:44:07,130 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-28 03:44:07,130 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-28 03:44:07,130 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-28 03:44:07,130 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-28 03:44:07,130 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-28 03:44:07,130 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-28 03:44:07,131 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-28 03:44:07,131 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-28 03:44:07,132 INFO L153 SettingsManager]: * Use SBE=true [2024-11-28 03:44:07,133 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-28 03:44:07,133 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-28 03:44:07,133 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-28 03:44:07,133 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-28 03:44:07,134 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-28 03:44:07,134 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-11-28 03:44:07,134 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-11-28 03:44:07,134 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-11-28 03:44:07,134 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-28 03:44:07,134 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-28 03:44:07,134 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-28 03:44:07,134 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-28 03:44:07,134 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-28 03:44:07,134 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-28 03:44:07,134 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-28 03:44:07,135 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 03:44:07,135 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 03:44:07,135 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 03:44:07,135 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 03:44:07,135 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-28 03:44:07,135 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 03:44:07,135 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 03:44:07,136 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 03:44:07,136 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 03:44:07,136 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-28 03:44:07,136 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-28 03:44:07,136 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-28 03:44:07,136 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-28 03:44:07,136 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-28 03:44:07,137 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-28 03:44:07,137 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-28 03:44:07,137 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-28 03:44:07,137 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_baab3a94-b378-48f0-85dc-9d3ad2a813c3/bin/uautomizer-verify-aQ6SnzHsRB Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 112ef0f8366461020cac5f2ac7dec2d7e41f31b24e653cd7734885d2bb23b087 [2024-11-28 03:44:07,478 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-28 03:44:07,490 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-28 03:44:07,496 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-28 03:44:07,499 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-28 03:44:07,499 INFO L274 PluginConnector]: CDTParser initialized [2024-11-28 03:44:07,500 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_baab3a94-b378-48f0-85dc-9d3ad2a813c3/bin/uautomizer-verify-aQ6SnzHsRB/../../sv-benchmarks/c/uthash-2.0.2/uthash_FNV_nondet_test1-2.i [2024-11-28 03:44:10,412 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_baab3a94-b378-48f0-85dc-9d3ad2a813c3/bin/uautomizer-verify-aQ6SnzHsRB/data/983353fe6/1f50cc16e23041f28ded2b70cb1445a1/FLAG0f8610479 [2024-11-28 03:44:10,818 INFO L384 CDTParser]: Found 1 translation units. [2024-11-28 03:44:10,818 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_baab3a94-b378-48f0-85dc-9d3ad2a813c3/sv-benchmarks/c/uthash-2.0.2/uthash_FNV_nondet_test1-2.i [2024-11-28 03:44:10,835 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_baab3a94-b378-48f0-85dc-9d3ad2a813c3/bin/uautomizer-verify-aQ6SnzHsRB/data/983353fe6/1f50cc16e23041f28ded2b70cb1445a1/FLAG0f8610479 [2024-11-28 03:44:10,856 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_baab3a94-b378-48f0-85dc-9d3ad2a813c3/bin/uautomizer-verify-aQ6SnzHsRB/data/983353fe6/1f50cc16e23041f28ded2b70cb1445a1 [2024-11-28 03:44:10,859 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-28 03:44:10,860 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-28 03:44:10,862 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-28 03:44:10,862 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-28 03:44:10,868 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-28 03:44:10,869 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 03:44:10" (1/1) ... [2024-11-28 03:44:10,869 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2e3af7a2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:44:10, skipping insertion in model container [2024-11-28 03:44:10,870 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 03:44:10" (1/1) ... [2024-11-28 03:44:10,929 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-28 03:44:11,452 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-28 03:44:11,503 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-28 03:44:11,511 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-28 03:44:11,519 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-28 03:44:11,532 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-28 03:44:11,557 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-28 03:44:11,559 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-28 03:44:11,561 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-28 03:44:11,567 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-28 03:44:11,569 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-28 03:44:11,571 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-28 03:44:11,578 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-28 03:44:11,591 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 03:44:11,611 ERROR L321 MainTranslator]: Unsupported Syntax: Found a cast between two array/pointer types of different sizes while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) [2024-11-28 03:44:11,612 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@dd54b12 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:44:11, skipping insertion in model container [2024-11-28 03:44:11,612 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-28 03:44:11,612 INFO L186 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2024-11-28 03:44:11,614 INFO L158 Benchmark]: Toolchain (without parser) took 753.14ms. Allocated memory is still 117.4MB. Free memory was 91.8MB in the beginning and 74.7MB in the end (delta: 17.1MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2024-11-28 03:44:11,615 INFO L158 Benchmark]: CDTParser took 1.43ms. Allocated memory is still 167.8MB. Free memory is still 104.6MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-28 03:44:11,616 INFO L158 Benchmark]: CACSL2BoogieTranslator took 750.75ms. Allocated memory is still 117.4MB. Free memory was 91.8MB in the beginning and 74.7MB in the end (delta: 17.1MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2024-11-28 03:44:11,617 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 1.43ms. Allocated memory is still 167.8MB. Free memory is still 104.6MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 750.75ms. Allocated memory is still 117.4MB. Free memory was 91.8MB in the beginning and 74.7MB in the end (delta: 17.1MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 753]: 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_baab3a94-b378-48f0-85dc-9d3ad2a813c3/bin/uautomizer-verify-aQ6SnzHsRB/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_baab3a94-b378-48f0-85dc-9d3ad2a813c3/bin/uautomizer-verify-aQ6SnzHsRB/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_baab3a94-b378-48f0-85dc-9d3ad2a813c3/bin/uautomizer-verify-aQ6SnzHsRB/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_baab3a94-b378-48f0-85dc-9d3ad2a813c3/bin/uautomizer-verify-aQ6SnzHsRB/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_FNV_nondet_test1-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_baab3a94-b378-48f0-85dc-9d3ad2a813c3/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_baab3a94-b378-48f0-85dc-9d3ad2a813c3/bin/uautomizer-verify-aQ6SnzHsRB --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 112ef0f8366461020cac5f2ac7dec2d7e41f31b24e653cd7734885d2bb23b087 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-11-28 03:44:14,113 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-28 03:44:14,242 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_baab3a94-b378-48f0-85dc-9d3ad2a813c3/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2024-11-28 03:44:14,251 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-28 03:44:14,251 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-28 03:44:14,277 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-28 03:44:14,277 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-28 03:44:14,278 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-28 03:44:14,278 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-28 03:44:14,278 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-28 03:44:14,278 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-28 03:44:14,278 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-28 03:44:14,279 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-28 03:44:14,279 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-28 03:44:14,279 INFO L153 SettingsManager]: * Use SBE=true [2024-11-28 03:44:14,279 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-28 03:44:14,280 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-28 03:44:14,280 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-28 03:44:14,280 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-28 03:44:14,280 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-28 03:44:14,280 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-11-28 03:44:14,280 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-11-28 03:44:14,280 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-11-28 03:44:14,281 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-28 03:44:14,281 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-28 03:44:14,281 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2024-11-28 03:44:14,281 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2024-11-28 03:44:14,281 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-28 03:44:14,281 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-28 03:44:14,281 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-28 03:44:14,282 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-28 03:44:14,282 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-28 03:44:14,282 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 03:44:14,282 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 03:44:14,282 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 03:44:14,282 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 03:44:14,282 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-28 03:44:14,283 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 03:44:14,283 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 03:44:14,283 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 03:44:14,283 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 03:44:14,283 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-28 03:44:14,283 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-28 03:44:14,283 INFO L153 SettingsManager]: * Trace refinement strategy=FOX [2024-11-28 03:44:14,283 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2024-11-28 03:44:14,284 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-28 03:44:14,284 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-28 03:44:14,284 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-28 03:44:14,284 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-28 03:44:14,284 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_baab3a94-b378-48f0-85dc-9d3ad2a813c3/bin/uautomizer-verify-aQ6SnzHsRB Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 112ef0f8366461020cac5f2ac7dec2d7e41f31b24e653cd7734885d2bb23b087 [2024-11-28 03:44:14,604 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-28 03:44:14,611 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-28 03:44:14,613 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-28 03:44:14,615 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-28 03:44:14,615 INFO L274 PluginConnector]: CDTParser initialized [2024-11-28 03:44:14,616 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_baab3a94-b378-48f0-85dc-9d3ad2a813c3/bin/uautomizer-verify-aQ6SnzHsRB/../../sv-benchmarks/c/uthash-2.0.2/uthash_FNV_nondet_test1-2.i [2024-11-28 03:44:17,630 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_baab3a94-b378-48f0-85dc-9d3ad2a813c3/bin/uautomizer-verify-aQ6SnzHsRB/data/c09f38be1/ee0d731683684ab4ad25e9dfd32f2243/FLAGa60e0031c [2024-11-28 03:44:18,009 INFO L384 CDTParser]: Found 1 translation units. [2024-11-28 03:44:18,010 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_baab3a94-b378-48f0-85dc-9d3ad2a813c3/sv-benchmarks/c/uthash-2.0.2/uthash_FNV_nondet_test1-2.i [2024-11-28 03:44:18,036 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_baab3a94-b378-48f0-85dc-9d3ad2a813c3/bin/uautomizer-verify-aQ6SnzHsRB/data/c09f38be1/ee0d731683684ab4ad25e9dfd32f2243/FLAGa60e0031c [2024-11-28 03:44:18,058 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_baab3a94-b378-48f0-85dc-9d3ad2a813c3/bin/uautomizer-verify-aQ6SnzHsRB/data/c09f38be1/ee0d731683684ab4ad25e9dfd32f2243 [2024-11-28 03:44:18,061 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-28 03:44:18,063 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-28 03:44:18,065 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-28 03:44:18,065 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-28 03:44:18,070 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-28 03:44:18,071 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 03:44:18" (1/1) ... [2024-11-28 03:44:18,072 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@53f2ed7f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:44:18, skipping insertion in model container [2024-11-28 03:44:18,074 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 03:44:18" (1/1) ... [2024-11-28 03:44:18,119 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-28 03:44:18,613 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-28 03:44:18,674 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-28 03:44:18,679 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-28 03:44:18,691 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-28 03:44:18,700 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-28 03:44:18,720 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-28 03:44:18,722 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-28 03:44:18,725 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-28 03:44:18,727 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-28 03:44:18,728 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-28 03:44:18,729 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-28 03:44:18,735 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-28 03:44:18,739 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 03:44:18,760 INFO L197 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2024-11-28 03:44:18,782 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-28 03:44:18,816 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-28 03:44:18,838 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-28 03:44:18,841 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-28 03:44:18,845 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-28 03:44:18,852 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-28 03:44:18,880 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-28 03:44:18,890 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-28 03:44:18,893 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-28 03:44:18,894 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-28 03:44:18,898 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-28 03:44:18,899 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-28 03:44:18,905 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-28 03:44:18,908 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 03:44:18,921 INFO L200 MainTranslator]: Completed pre-run [2024-11-28 03:44:19,000 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 03:44:19,064 INFO L204 MainTranslator]: Completed translation [2024-11-28 03:44:19,065 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:44:19 WrapperNode [2024-11-28 03:44:19,065 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-28 03:44:19,066 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-28 03:44:19,066 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-28 03:44:19,066 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-28 03:44:19,073 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:44:19" (1/1) ... [2024-11-28 03:44:19,097 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:44:19" (1/1) ... [2024-11-28 03:44:19,139 INFO L138 Inliner]: procedures = 179, calls = 221, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 739 [2024-11-28 03:44:19,139 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-28 03:44:19,139 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-28 03:44:19,140 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-28 03:44:19,140 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-28 03:44:19,149 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:44:19" (1/1) ... [2024-11-28 03:44:19,150 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:44:19" (1/1) ... [2024-11-28 03:44:19,157 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:44:19" (1/1) ... [2024-11-28 03:44:19,236 INFO L175 MemorySlicer]: Split 206 memory accesses to 2 slices as follows [2, 204]. 99 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 50 writes are split as follows [0, 50]. [2024-11-28 03:44:19,236 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:44:19" (1/1) ... [2024-11-28 03:44:19,237 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:44:19" (1/1) ... [2024-11-28 03:44:19,269 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:44:19" (1/1) ... [2024-11-28 03:44:19,271 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:44:19" (1/1) ... [2024-11-28 03:44:19,283 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:44:19" (1/1) ... [2024-11-28 03:44:19,289 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:44:19" (1/1) ... [2024-11-28 03:44:19,294 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:44:19" (1/1) ... [2024-11-28 03:44:19,306 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-28 03:44:19,311 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-28 03:44:19,311 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-28 03:44:19,311 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-28 03:44:19,314 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:44:19" (1/1) ... [2024-11-28 03:44:19,322 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 03:44:19,337 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_baab3a94-b378-48f0-85dc-9d3ad2a813c3/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:44:19,351 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_baab3a94-b378-48f0-85dc-9d3ad2a813c3/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-28 03:44:19,359 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_baab3a94-b378-48f0-85dc-9d3ad2a813c3/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-28 03:44:19,384 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#0 [2024-11-28 03:44:19,384 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#1 [2024-11-28 03:44:19,384 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#0 [2024-11-28 03:44:19,385 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#1 [2024-11-28 03:44:19,385 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#0 [2024-11-28 03:44:19,385 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#1 [2024-11-28 03:44:19,385 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#0 [2024-11-28 03:44:19,386 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#1 [2024-11-28 03:44:19,386 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-28 03:44:19,386 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-28 03:44:19,386 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2024-11-28 03:44:19,387 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2024-11-28 03:44:19,387 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2024-11-28 03:44:19,387 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2024-11-28 03:44:19,388 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-28 03:44:19,389 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#0 [2024-11-28 03:44:19,389 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#1 [2024-11-28 03:44:19,389 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2024-11-28 03:44:19,389 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#1 [2024-11-28 03:44:19,389 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-28 03:44:19,390 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-28 03:44:19,623 INFO L234 CfgBuilder]: Building ICFG [2024-11-28 03:44:19,625 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-28 03:44:19,628 WARN L773 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2024-11-28 03:44:19,688 WARN L773 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2024-11-28 03:44:23,281 INFO L? ?]: Removed 893 outVars from TransFormulas that were not future-live. [2024-11-28 03:44:23,282 INFO L283 CfgBuilder]: Performing block encoding [2024-11-28 03:44:23,306 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-28 03:44:23,306 INFO L312 CfgBuilder]: Removed 23 assume(true) statements. [2024-11-28 03:44:23,307 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:44:23 BoogieIcfgContainer [2024-11-28 03:44:23,307 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-28 03:44:23,309 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-28 03:44:23,310 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-28 03:44:23,314 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-28 03:44:23,315 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 03:44:18" (1/3) ... [2024-11-28 03:44:23,315 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@273c848a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 03:44:23, skipping insertion in model container [2024-11-28 03:44:23,316 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:44:19" (2/3) ... [2024-11-28 03:44:23,316 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@273c848a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 03:44:23, skipping insertion in model container [2024-11-28 03:44:23,316 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:44:23" (3/3) ... [2024-11-28 03:44:23,317 INFO L128 eAbstractionObserver]: Analyzing ICFG uthash_FNV_nondet_test1-2.i [2024-11-28 03:44:23,332 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-28 03:44:23,333 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG uthash_FNV_nondet_test1-2.i that has 3 procedures, 842 locations, 1 initial locations, 25 loop locations, and 425 error locations. [2024-11-28 03:44:23,394 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-28 03:44:23,409 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;@61eccf17, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-28 03:44:23,409 INFO L334 AbstractCegarLoop]: Starting to check reachability of 425 error locations. [2024-11-28 03:44:23,420 INFO L276 IsEmpty]: Start isEmpty. Operand has 837 states, 410 states have (on average 2.231707317073171) internal successors, (915), 832 states have internal predecessors, (915), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-28 03:44:23,425 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2024-11-28 03:44:23,425 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:44:23,426 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2024-11-28 03:44:23,426 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr314REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 422 more)] === [2024-11-28 03:44:23,433 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:44:23,434 INFO L85 PathProgramCache]: Analyzing trace with hash 1449868554, now seen corresponding path program 1 times [2024-11-28 03:44:23,444 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 03:44:23,445 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [693433359] [2024-11-28 03:44:23,445 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:44:23,445 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:44:23,446 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_baab3a94-b378-48f0-85dc-9d3ad2a813c3/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:44:23,448 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_baab3a94-b378-48f0-85dc-9d3ad2a813c3/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:44:23,450 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_baab3a94-b378-48f0-85dc-9d3ad2a813c3/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-28 03:44:23,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:44:23,631 INFO L256 TraceCheckSpWp]: Trace formula consists of 21 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-11-28 03:44:23,635 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:44:23,650 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:44:23,651 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 03:44:23,651 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 03:44:23,651 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [693433359] [2024-11-28 03:44:23,652 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [693433359] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:44:23,652 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:44:23,652 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-28 03:44:23,655 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1409770722] [2024-11-28 03:44:23,656 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:44:23,659 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-28 03:44:23,660 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 03:44:23,687 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-28 03:44:23,688 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-28 03:44:23,692 INFO L87 Difference]: Start difference. First operand has 837 states, 410 states have (on average 2.231707317073171) internal successors, (915), 832 states have internal predecessors, (915), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:44:23,784 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:44:23,785 INFO L93 Difference]: Finished difference Result 827 states and 865 transitions. [2024-11-28 03:44:23,785 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-28 03:44:23,787 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 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 6 [2024-11-28 03:44:23,788 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:44:23,807 INFO L225 Difference]: With dead ends: 827 [2024-11-28 03:44:23,809 INFO L226 Difference]: Without dead ends: 825 [2024-11-28 03:44:23,811 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-28 03:44:23,814 INFO L435 NwaCegarLoop]: 865 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 865 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 03:44:23,815 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 865 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 03:44:23,830 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 825 states. [2024-11-28 03:44:23,903 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 825 to 825. [2024-11-28 03:44:23,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 825 states, 404 states have (on average 2.121287128712871) internal successors, (857), 820 states have internal predecessors, (857), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-28 03:44:23,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 825 states to 825 states and 863 transitions. [2024-11-28 03:44:23,916 INFO L78 Accepts]: Start accepts. Automaton has 825 states and 863 transitions. Word has length 6 [2024-11-28 03:44:23,917 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:44:23,917 INFO L471 AbstractCegarLoop]: Abstraction has 825 states and 863 transitions. [2024-11-28 03:44:23,917 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:44:23,917 INFO L276 IsEmpty]: Start isEmpty. Operand 825 states and 863 transitions. [2024-11-28 03:44:23,917 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2024-11-28 03:44:23,917 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:44:23,918 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2024-11-28 03:44:23,929 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_baab3a94-b378-48f0-85dc-9d3ad2a813c3/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-28 03:44:24,118 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_baab3a94-b378-48f0-85dc-9d3ad2a813c3/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:44:24,119 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 422 more)] === [2024-11-28 03:44:24,119 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:44:24,119 INFO L85 PathProgramCache]: Analyzing trace with hash 1422103338, now seen corresponding path program 1 times [2024-11-28 03:44:24,119 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 03:44:24,120 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1759408969] [2024-11-28 03:44:24,120 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:44:24,120 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:44:24,120 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_baab3a94-b378-48f0-85dc-9d3ad2a813c3/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:44:24,122 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_baab3a94-b378-48f0-85dc-9d3ad2a813c3/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:44:24,123 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_baab3a94-b378-48f0-85dc-9d3ad2a813c3/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-28 03:44:24,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:44:24,243 INFO L256 TraceCheckSpWp]: Trace formula consists of 27 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-28 03:44:24,246 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:44:24,278 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2024-11-28 03:44:24,301 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:44:24,301 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 03:44:24,302 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 03:44:24,302 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1759408969] [2024-11-28 03:44:24,302 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1759408969] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:44:24,302 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:44:24,302 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-28 03:44:24,302 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1853157176] [2024-11-28 03:44:24,302 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:44:24,303 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 03:44:24,303 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 03:44:24,304 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 03:44:24,304 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 03:44:24,304 INFO L87 Difference]: Start difference. First operand 825 states and 863 transitions. Second operand has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:44:26,003 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:44:26,003 INFO L93 Difference]: Finished difference Result 779 states and 818 transitions. [2024-11-28 03:44:26,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 03:44:26,004 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 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 6 [2024-11-28 03:44:26,004 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:44:26,007 INFO L225 Difference]: With dead ends: 779 [2024-11-28 03:44:26,007 INFO L226 Difference]: Without dead ends: 779 [2024-11-28 03:44:26,008 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 03:44:26,009 INFO L435 NwaCegarLoop]: 506 mSDtfsCounter, 517 mSDsluCounter, 115 mSDsCounter, 0 mSdLazyCounter, 487 mSolverCounterSat, 53 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 520 SdHoareTripleChecker+Valid, 621 SdHoareTripleChecker+Invalid, 540 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 487 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2024-11-28 03:44:26,009 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [520 Valid, 621 Invalid, 540 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [53 Valid, 487 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2024-11-28 03:44:26,012 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 779 states. [2024-11-28 03:44:26,033 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 779 to 776. [2024-11-28 03:44:26,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 776 states, 404 states have (on average 2.0) internal successors, (808), 771 states have internal predecessors, (808), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-28 03:44:26,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 776 states to 776 states and 814 transitions. [2024-11-28 03:44:26,039 INFO L78 Accepts]: Start accepts. Automaton has 776 states and 814 transitions. Word has length 6 [2024-11-28 03:44:26,040 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:44:26,040 INFO L471 AbstractCegarLoop]: Abstraction has 776 states and 814 transitions. [2024-11-28 03:44:26,040 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:44:26,040 INFO L276 IsEmpty]: Start isEmpty. Operand 776 states and 814 transitions. [2024-11-28 03:44:26,041 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2024-11-28 03:44:26,041 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:44:26,041 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2024-11-28 03:44:26,053 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_baab3a94-b378-48f0-85dc-9d3ad2a813c3/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-28 03:44:26,241 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_baab3a94-b378-48f0-85dc-9d3ad2a813c3/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:44:26,242 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 422 more)] === [2024-11-28 03:44:26,242 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:44:26,242 INFO L85 PathProgramCache]: Analyzing trace with hash 1422103339, now seen corresponding path program 1 times [2024-11-28 03:44:26,243 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 03:44:26,243 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [768234122] [2024-11-28 03:44:26,243 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:44:26,243 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:44:26,243 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_baab3a94-b378-48f0-85dc-9d3ad2a813c3/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:44:26,247 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_baab3a94-b378-48f0-85dc-9d3ad2a813c3/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:44:26,248 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_baab3a94-b378-48f0-85dc-9d3ad2a813c3/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-28 03:44:26,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:44:26,354 INFO L256 TraceCheckSpWp]: Trace formula consists of 27 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-28 03:44:26,356 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:44:26,374 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2024-11-28 03:44:26,400 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:44:26,400 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 03:44:26,401 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 03:44:26,401 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [768234122] [2024-11-28 03:44:26,401 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [768234122] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:44:26,401 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:44:26,401 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-28 03:44:26,401 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1923135037] [2024-11-28 03:44:26,402 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:44:26,402 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 03:44:26,402 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 03:44:26,402 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 03:44:26,403 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 03:44:26,403 INFO L87 Difference]: Start difference. First operand 776 states and 814 transitions. Second operand has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:44:28,417 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:44:28,417 INFO L93 Difference]: Finished difference Result 851 states and 893 transitions. [2024-11-28 03:44:28,418 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 03:44:28,418 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 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 6 [2024-11-28 03:44:28,418 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:44:28,421 INFO L225 Difference]: With dead ends: 851 [2024-11-28 03:44:28,421 INFO L226 Difference]: Without dead ends: 851 [2024-11-28 03:44:28,422 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 03:44:28,422 INFO L435 NwaCegarLoop]: 685 mSDtfsCounter, 268 mSDsluCounter, 282 mSDsCounter, 0 mSdLazyCounter, 461 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 268 SdHoareTripleChecker+Valid, 967 SdHoareTripleChecker+Invalid, 475 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 461 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2024-11-28 03:44:28,423 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [268 Valid, 967 Invalid, 475 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 461 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2024-11-28 03:44:28,424 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 851 states. [2024-11-28 03:44:28,438 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 851 to 802. [2024-11-28 03:44:28,440 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 802 states, 441 states have (on average 1.9750566893424035) internal successors, (871), 797 states have internal predecessors, (871), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-28 03:44:28,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 802 states to 802 states and 877 transitions. [2024-11-28 03:44:28,444 INFO L78 Accepts]: Start accepts. Automaton has 802 states and 877 transitions. Word has length 6 [2024-11-28 03:44:28,444 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:44:28,444 INFO L471 AbstractCegarLoop]: Abstraction has 802 states and 877 transitions. [2024-11-28 03:44:28,444 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:44:28,445 INFO L276 IsEmpty]: Start isEmpty. Operand 802 states and 877 transitions. [2024-11-28 03:44:28,445 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2024-11-28 03:44:28,445 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:44:28,445 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2024-11-28 03:44:28,454 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_baab3a94-b378-48f0-85dc-9d3ad2a813c3/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-28 03:44:28,646 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_baab3a94-b378-48f0-85dc-9d3ad2a813c3/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:44:28,646 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr314REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 422 more)] === [2024-11-28 03:44:28,646 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:44:28,646 INFO L85 PathProgramCache]: Analyzing trace with hash 1423056654, now seen corresponding path program 1 times [2024-11-28 03:44:28,646 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 03:44:28,647 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1738915524] [2024-11-28 03:44:28,647 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:44:28,647 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:44:28,647 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_baab3a94-b378-48f0-85dc-9d3ad2a813c3/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:44:28,650 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_baab3a94-b378-48f0-85dc-9d3ad2a813c3/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:44:28,652 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_baab3a94-b378-48f0-85dc-9d3ad2a813c3/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-28 03:44:28,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:44:28,748 INFO L256 TraceCheckSpWp]: Trace formula consists of 21 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-28 03:44:28,749 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:44:28,811 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:44:28,811 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 03:44:28,811 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 03:44:28,811 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1738915524] [2024-11-28 03:44:28,812 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1738915524] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:44:28,812 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:44:28,812 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-28 03:44:28,812 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1358383997] [2024-11-28 03:44:28,812 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:44:28,812 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 03:44:28,812 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 03:44:28,813 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 03:44:28,813 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 03:44:28,813 INFO L87 Difference]: Start difference. First operand 802 states and 877 transitions. Second operand has 4 states, 4 states have (on average 1.5) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:44:29,597 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:44:29,597 INFO L93 Difference]: Finished difference Result 1114 states and 1231 transitions. [2024-11-28 03:44:29,598 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 03:44:29,598 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.5) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 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 6 [2024-11-28 03:44:29,599 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:44:29,603 INFO L225 Difference]: With dead ends: 1114 [2024-11-28 03:44:29,603 INFO L226 Difference]: Without dead ends: 1114 [2024-11-28 03:44:29,603 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-28 03:44:29,607 INFO L435 NwaCegarLoop]: 869 mSDtfsCounter, 332 mSDsluCounter, 1492 mSDsCounter, 0 mSdLazyCounter, 257 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 332 SdHoareTripleChecker+Valid, 2361 SdHoareTripleChecker+Invalid, 263 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 257 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-28 03:44:29,608 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [332 Valid, 2361 Invalid, 263 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 257 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-28 03:44:29,614 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1114 states. [2024-11-28 03:44:29,635 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1114 to 895. [2024-11-28 03:44:29,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 895 states, 534 states have (on average 1.9176029962546817) internal successors, (1024), 890 states have internal predecessors, (1024), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-28 03:44:29,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 895 states to 895 states and 1030 transitions. [2024-11-28 03:44:29,646 INFO L78 Accepts]: Start accepts. Automaton has 895 states and 1030 transitions. Word has length 6 [2024-11-28 03:44:29,646 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:44:29,646 INFO L471 AbstractCegarLoop]: Abstraction has 895 states and 1030 transitions. [2024-11-28 03:44:29,646 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.5) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:44:29,646 INFO L276 IsEmpty]: Start isEmpty. Operand 895 states and 1030 transitions. [2024-11-28 03:44:29,647 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2024-11-28 03:44:29,647 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:44:29,647 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:44:29,658 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_baab3a94-b378-48f0-85dc-9d3ad2a813c3/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-11-28 03:44:29,848 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_baab3a94-b378-48f0-85dc-9d3ad2a813c3/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:44:29,849 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr318ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 422 more)] === [2024-11-28 03:44:29,850 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:44:29,850 INFO L85 PathProgramCache]: Analyzing trace with hash -1338307067, now seen corresponding path program 1 times [2024-11-28 03:44:29,850 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 03:44:29,850 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2122120321] [2024-11-28 03:44:29,850 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:44:29,850 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:44:29,850 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_baab3a94-b378-48f0-85dc-9d3ad2a813c3/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:44:29,857 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_baab3a94-b378-48f0-85dc-9d3ad2a813c3/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:44:29,859 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_baab3a94-b378-48f0-85dc-9d3ad2a813c3/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-28 03:44:29,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:44:29,962 INFO L256 TraceCheckSpWp]: Trace formula consists of 26 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-28 03:44:29,964 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:44:29,996 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:44:29,996 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 03:44:29,996 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 03:44:29,997 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2122120321] [2024-11-28 03:44:29,997 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2122120321] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:44:29,997 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:44:29,997 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-28 03:44:29,997 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1371783251] [2024-11-28 03:44:29,997 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:44:29,997 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 03:44:29,998 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 03:44:29,998 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 03:44:29,998 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 03:44:29,998 INFO L87 Difference]: Start difference. First operand 895 states and 1030 transitions. Second operand has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:44:30,037 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:44:30,037 INFO L93 Difference]: Finished difference Result 895 states and 1029 transitions. [2024-11-28 03:44:30,038 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 03:44:30,038 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2024-11-28 03:44:30,038 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:44:30,041 INFO L225 Difference]: With dead ends: 895 [2024-11-28 03:44:30,041 INFO L226 Difference]: Without dead ends: 895 [2024-11-28 03:44:30,041 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 03:44:30,043 INFO L435 NwaCegarLoop]: 800 mSDtfsCounter, 8 mSDsluCounter, 1596 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 2396 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 03:44:30,043 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 2396 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 03:44:30,045 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 895 states. [2024-11-28 03:44:30,062 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 895 to 895. [2024-11-28 03:44:30,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 895 states, 534 states have (on average 1.9157303370786516) internal successors, (1023), 890 states have internal predecessors, (1023), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-28 03:44:30,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 895 states to 895 states and 1029 transitions. [2024-11-28 03:44:30,067 INFO L78 Accepts]: Start accepts. Automaton has 895 states and 1029 transitions. Word has length 9 [2024-11-28 03:44:30,068 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:44:30,068 INFO L471 AbstractCegarLoop]: Abstraction has 895 states and 1029 transitions. [2024-11-28 03:44:30,068 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:44:30,068 INFO L276 IsEmpty]: Start isEmpty. Operand 895 states and 1029 transitions. [2024-11-28 03:44:30,068 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2024-11-28 03:44:30,068 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:44:30,068 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:44:30,078 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_baab3a94-b378-48f0-85dc-9d3ad2a813c3/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-11-28 03:44:30,269 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_baab3a94-b378-48f0-85dc-9d3ad2a813c3/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:44:30,269 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr424ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 422 more)] === [2024-11-28 03:44:30,269 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:44:30,270 INFO L85 PathProgramCache]: Analyzing trace with hash 914551586, now seen corresponding path program 1 times [2024-11-28 03:44:30,270 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 03:44:30,270 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [259000618] [2024-11-28 03:44:30,270 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:44:30,270 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:44:30,270 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_baab3a94-b378-48f0-85dc-9d3ad2a813c3/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:44:30,272 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_baab3a94-b378-48f0-85dc-9d3ad2a813c3/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:44:30,273 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_baab3a94-b378-48f0-85dc-9d3ad2a813c3/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-28 03:44:30,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:44:30,370 INFO L256 TraceCheckSpWp]: Trace formula consists of 36 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-28 03:44:30,371 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:44:30,410 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:44:30,410 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 03:44:30,410 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 03:44:30,410 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [259000618] [2024-11-28 03:44:30,410 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [259000618] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:44:30,410 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:44:30,410 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-28 03:44:30,410 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1981856454] [2024-11-28 03:44:30,411 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:44:30,411 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 03:44:30,411 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 03:44:30,411 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 03:44:30,411 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 03:44:30,411 INFO L87 Difference]: Start difference. First operand 895 states and 1029 transitions. Second operand has 3 states, 2 states have (on average 6.5) internal successors, (13), 3 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:44:31,675 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:44:31,676 INFO L93 Difference]: Finished difference Result 897 states and 1030 transitions. [2024-11-28 03:44:31,676 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 03:44:31,677 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 6.5) internal successors, (13), 3 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2024-11-28 03:44:31,677 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:44:31,680 INFO L225 Difference]: With dead ends: 897 [2024-11-28 03:44:31,680 INFO L226 Difference]: Without dead ends: 887 [2024-11-28 03:44:31,680 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 03:44:31,681 INFO L435 NwaCegarLoop]: 802 mSDtfsCounter, 1 mSDsluCounter, 433 mSDsCounter, 0 mSdLazyCounter, 370 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 1235 SdHoareTripleChecker+Invalid, 370 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 370 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2024-11-28 03:44:31,681 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 1235 Invalid, 370 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 370 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2024-11-28 03:44:31,683 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 887 states. [2024-11-28 03:44:31,696 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 887 to 887. [2024-11-28 03:44:31,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 887 states, 526 states have (on average 1.9277566539923954) internal successors, (1014), 882 states have internal predecessors, (1014), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-28 03:44:31,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 887 states to 887 states and 1020 transitions. [2024-11-28 03:44:31,701 INFO L78 Accepts]: Start accepts. Automaton has 887 states and 1020 transitions. Word has length 13 [2024-11-28 03:44:31,701 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:44:31,701 INFO L471 AbstractCegarLoop]: Abstraction has 887 states and 1020 transitions. [2024-11-28 03:44:31,701 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 6.5) internal successors, (13), 3 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:44:31,702 INFO L276 IsEmpty]: Start isEmpty. Operand 887 states and 1020 transitions. [2024-11-28 03:44:31,702 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2024-11-28 03:44:31,702 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:44:31,702 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:44:31,711 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_baab3a94-b378-48f0-85dc-9d3ad2a813c3/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-11-28 03:44:31,902 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_baab3a94-b378-48f0-85dc-9d3ad2a813c3/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:44:31,903 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 422 more)] === [2024-11-28 03:44:31,903 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:44:31,903 INFO L85 PathProgramCache]: Analyzing trace with hash 247711511, now seen corresponding path program 1 times [2024-11-28 03:44:31,904 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 03:44:31,904 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1301187781] [2024-11-28 03:44:31,904 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:44:31,904 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:44:31,904 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_baab3a94-b378-48f0-85dc-9d3ad2a813c3/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:44:31,906 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_baab3a94-b378-48f0-85dc-9d3ad2a813c3/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:44:31,907 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_baab3a94-b378-48f0-85dc-9d3ad2a813c3/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-28 03:44:32,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:44:32,027 INFO L256 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-28 03:44:32,029 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:44:32,035 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2024-11-28 03:44:32,088 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:44:32,088 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 03:44:32,088 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 03:44:32,088 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1301187781] [2024-11-28 03:44:32,088 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1301187781] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:44:32,088 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:44:32,088 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 03:44:32,089 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [41334406] [2024-11-28 03:44:32,089 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:44:32,089 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 03:44:32,089 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 03:44:32,089 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 03:44:32,090 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 03:44:32,090 INFO L87 Difference]: Start difference. First operand 887 states and 1020 transitions. Second operand has 4 states, 3 states have (on average 5.333333333333333) internal successors, (16), 4 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:44:34,250 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:44:34,251 INFO L93 Difference]: Finished difference Result 872 states and 982 transitions. [2024-11-28 03:44:34,251 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 03:44:34,251 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 5.333333333333333) internal successors, (16), 4 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2024-11-28 03:44:34,252 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:44:34,254 INFO L225 Difference]: With dead ends: 872 [2024-11-28 03:44:34,255 INFO L226 Difference]: Without dead ends: 872 [2024-11-28 03:44:34,255 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-28 03:44:34,257 INFO L435 NwaCegarLoop]: 480 mSDtfsCounter, 564 mSDsluCounter, 426 mSDsCounter, 0 mSdLazyCounter, 861 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 567 SdHoareTripleChecker+Valid, 906 SdHoareTripleChecker+Invalid, 889 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 861 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2024-11-28 03:44:34,258 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [567 Valid, 906 Invalid, 889 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 861 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2024-11-28 03:44:34,260 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 872 states. [2024-11-28 03:44:34,272 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 872 to 864. [2024-11-28 03:44:34,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 864 states, 526 states have (on average 1.8403041825095057) internal successors, (968), 859 states have internal predecessors, (968), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-28 03:44:34,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 864 states to 864 states and 974 transitions. [2024-11-28 03:44:34,276 INFO L78 Accepts]: Start accepts. Automaton has 864 states and 974 transitions. Word has length 16 [2024-11-28 03:44:34,277 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:44:34,277 INFO L471 AbstractCegarLoop]: Abstraction has 864 states and 974 transitions. [2024-11-28 03:44:34,277 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 5.333333333333333) internal successors, (16), 4 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:44:34,277 INFO L276 IsEmpty]: Start isEmpty. Operand 864 states and 974 transitions. [2024-11-28 03:44:34,278 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2024-11-28 03:44:34,278 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:44:34,278 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:44:34,287 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_baab3a94-b378-48f0-85dc-9d3ad2a813c3/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-28 03:44:34,482 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_baab3a94-b378-48f0-85dc-9d3ad2a813c3/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:44:34,482 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 422 more)] === [2024-11-28 03:44:34,483 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:44:34,483 INFO L85 PathProgramCache]: Analyzing trace with hash 247711512, now seen corresponding path program 1 times [2024-11-28 03:44:34,483 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 03:44:34,483 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1222989419] [2024-11-28 03:44:34,483 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:44:34,483 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:44:34,483 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_baab3a94-b378-48f0-85dc-9d3ad2a813c3/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:44:34,485 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_baab3a94-b378-48f0-85dc-9d3ad2a813c3/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:44:34,487 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_baab3a94-b378-48f0-85dc-9d3ad2a813c3/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-28 03:44:34,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:44:34,614 INFO L256 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-28 03:44:34,616 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:44:34,628 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2024-11-28 03:44:34,756 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:44:34,756 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 03:44:34,756 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 03:44:34,756 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1222989419] [2024-11-28 03:44:34,756 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1222989419] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:44:34,756 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:44:34,757 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 03:44:34,757 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1746065794] [2024-11-28 03:44:34,757 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:44:34,757 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 03:44:34,757 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 03:44:34,758 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 03:44:34,758 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 03:44:34,758 INFO L87 Difference]: Start difference. First operand 864 states and 974 transitions. Second operand has 4 states, 3 states have (on average 5.333333333333333) internal successors, (16), 4 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:44:37,554 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:44:37,554 INFO L93 Difference]: Finished difference Result 1045 states and 1146 transitions. [2024-11-28 03:44:37,555 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 03:44:37,555 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 5.333333333333333) internal successors, (16), 4 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2024-11-28 03:44:37,555 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:44:37,558 INFO L225 Difference]: With dead ends: 1045 [2024-11-28 03:44:37,559 INFO L226 Difference]: Without dead ends: 1045 [2024-11-28 03:44:37,559 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-28 03:44:37,559 INFO L435 NwaCegarLoop]: 747 mSDtfsCounter, 389 mSDsluCounter, 707 mSDsCounter, 0 mSdLazyCounter, 907 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 389 SdHoareTripleChecker+Valid, 1454 SdHoareTripleChecker+Invalid, 929 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 907 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2024-11-28 03:44:37,560 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [389 Valid, 1454 Invalid, 929 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 907 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2024-11-28 03:44:37,561 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1045 states. [2024-11-28 03:44:37,575 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1045 to 980. [2024-11-28 03:44:37,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 980 states, 642 states have (on average 1.7258566978193146) internal successors, (1108), 975 states have internal predecessors, (1108), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-28 03:44:37,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 980 states to 980 states and 1114 transitions. [2024-11-28 03:44:37,580 INFO L78 Accepts]: Start accepts. Automaton has 980 states and 1114 transitions. Word has length 16 [2024-11-28 03:44:37,580 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:44:37,580 INFO L471 AbstractCegarLoop]: Abstraction has 980 states and 1114 transitions. [2024-11-28 03:44:37,580 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 5.333333333333333) internal successors, (16), 4 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:44:37,581 INFO L276 IsEmpty]: Start isEmpty. Operand 980 states and 1114 transitions. [2024-11-28 03:44:37,581 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2024-11-28 03:44:37,581 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:44:37,594 INFO L218 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:44:37,604 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_baab3a94-b378-48f0-85dc-9d3ad2a813c3/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2024-11-28 03:44:37,794 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_baab3a94-b378-48f0-85dc-9d3ad2a813c3/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:44:37,795 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 422 more)] === [2024-11-28 03:44:37,795 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:44:37,795 INFO L85 PathProgramCache]: Analyzing trace with hash 1598816529, now seen corresponding path program 1 times [2024-11-28 03:44:37,796 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 03:44:37,796 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1756959788] [2024-11-28 03:44:37,796 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:44:37,796 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:44:37,796 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_baab3a94-b378-48f0-85dc-9d3ad2a813c3/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:44:37,801 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_baab3a94-b378-48f0-85dc-9d3ad2a813c3/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:44:37,803 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_baab3a94-b378-48f0-85dc-9d3ad2a813c3/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-28 03:44:37,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:44:37,996 INFO L256 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-28 03:44:37,999 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:44:38,009 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2024-11-28 03:44:38,313 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:44:38,314 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:44:38,962 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:44:38,963 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 03:44:38,963 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1756959788] [2024-11-28 03:44:38,963 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1756959788] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 03:44:38,963 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-28 03:44:38,963 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 7 [2024-11-28 03:44:38,963 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1889457435] [2024-11-28 03:44:38,963 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-28 03:44:38,964 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-28 03:44:38,964 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 03:44:38,964 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-28 03:44:38,964 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-11-28 03:44:38,965 INFO L87 Difference]: Start difference. First operand 980 states and 1114 transitions. Second operand has 8 states, 7 states have (on average 9.571428571428571) internal successors, (67), 8 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:44:46,578 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:44:46,578 INFO L93 Difference]: Finished difference Result 1407 states and 1642 transitions. [2024-11-28 03:44:46,578 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-28 03:44:46,579 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 9.571428571428571) internal successors, (67), 8 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 35 [2024-11-28 03:44:46,579 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:44:46,584 INFO L225 Difference]: With dead ends: 1407 [2024-11-28 03:44:46,584 INFO L226 Difference]: Without dead ends: 1407 [2024-11-28 03:44:46,584 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=48, Invalid=84, Unknown=0, NotChecked=0, Total=132 [2024-11-28 03:44:46,585 INFO L435 NwaCegarLoop]: 775 mSDtfsCounter, 1524 mSDsluCounter, 1600 mSDsCounter, 0 mSdLazyCounter, 1872 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1525 SdHoareTripleChecker+Valid, 2375 SdHoareTripleChecker+Invalid, 1899 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 1872 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.4s IncrementalHoareTripleChecker+Time [2024-11-28 03:44:46,585 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1525 Valid, 2375 Invalid, 1899 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 1872 Invalid, 0 Unknown, 0 Unchecked, 7.4s Time] [2024-11-28 03:44:46,587 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1407 states. [2024-11-28 03:44:46,615 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1407 to 1146. [2024-11-28 03:44:46,617 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1146 states, 808 states have (on average 1.6608910891089108) internal successors, (1342), 1141 states have internal predecessors, (1342), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-28 03:44:46,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1146 states to 1146 states and 1348 transitions. [2024-11-28 03:44:46,622 INFO L78 Accepts]: Start accepts. Automaton has 1146 states and 1348 transitions. Word has length 35 [2024-11-28 03:44:46,622 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:44:46,622 INFO L471 AbstractCegarLoop]: Abstraction has 1146 states and 1348 transitions. [2024-11-28 03:44:46,623 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 9.571428571428571) internal successors, (67), 8 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:44:46,623 INFO L276 IsEmpty]: Start isEmpty. Operand 1146 states and 1348 transitions. [2024-11-28 03:44:46,624 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2024-11-28 03:44:46,624 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:44:46,624 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] [2024-11-28 03:44:46,636 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_baab3a94-b378-48f0-85dc-9d3ad2a813c3/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2024-11-28 03:44:46,828 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_baab3a94-b378-48f0-85dc-9d3ad2a813c3/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:44:46,828 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr63REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 422 more)] === [2024-11-28 03:44:46,828 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:44:46,828 INFO L85 PathProgramCache]: Analyzing trace with hash 1225572340, now seen corresponding path program 1 times [2024-11-28 03:44:46,829 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 03:44:46,829 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1160186551] [2024-11-28 03:44:46,829 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:44:46,829 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:44:46,829 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_baab3a94-b378-48f0-85dc-9d3ad2a813c3/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:44:46,831 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_baab3a94-b378-48f0-85dc-9d3ad2a813c3/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:44:46,832 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_baab3a94-b378-48f0-85dc-9d3ad2a813c3/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-28 03:44:47,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:44:47,043 INFO L256 TraceCheckSpWp]: Trace formula consists of 212 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-28 03:44:47,045 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:44:47,109 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:44:47,109 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 03:44:47,109 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 03:44:47,109 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1160186551] [2024-11-28 03:44:47,110 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1160186551] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:44:47,110 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:44:47,110 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-28 03:44:47,110 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1699903599] [2024-11-28 03:44:47,110 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:44:47,110 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 03:44:47,111 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 03:44:47,111 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 03:44:47,111 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 03:44:47,111 INFO L87 Difference]: Start difference. First operand 1146 states and 1348 transitions. Second operand has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:44:47,223 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:44:47,223 INFO L93 Difference]: Finished difference Result 831 states and 908 transitions. [2024-11-28 03:44:47,223 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 03:44:47,224 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 states have internal predecessors, (51), 0 states have call successors, (0), 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 51 [2024-11-28 03:44:47,224 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:44:47,227 INFO L225 Difference]: With dead ends: 831 [2024-11-28 03:44:47,227 INFO L226 Difference]: Without dead ends: 831 [2024-11-28 03:44:47,227 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-28 03:44:47,228 INFO L435 NwaCegarLoop]: 718 mSDtfsCounter, 56 mSDsluCounter, 1363 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56 SdHoareTripleChecker+Valid, 2081 SdHoareTripleChecker+Invalid, 77 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 03:44:47,228 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [56 Valid, 2081 Invalid, 77 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 03:44:47,230 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 831 states. [2024-11-28 03:44:47,241 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 831 to 829. [2024-11-28 03:44:47,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 829 states, 514 states have (on average 1.7509727626459144) internal successors, (900), 824 states have internal predecessors, (900), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-28 03:44:47,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 829 states to 829 states and 906 transitions. [2024-11-28 03:44:47,245 INFO L78 Accepts]: Start accepts. Automaton has 829 states and 906 transitions. Word has length 51 [2024-11-28 03:44:47,247 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:44:47,247 INFO L471 AbstractCegarLoop]: Abstraction has 829 states and 906 transitions. [2024-11-28 03:44:47,248 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:44:47,248 INFO L276 IsEmpty]: Start isEmpty. Operand 829 states and 906 transitions. [2024-11-28 03:44:47,249 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2024-11-28 03:44:47,249 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:44:47,249 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] [2024-11-28 03:44:47,266 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_baab3a94-b378-48f0-85dc-9d3ad2a813c3/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-11-28 03:44:47,455 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_baab3a94-b378-48f0-85dc-9d3ad2a813c3/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:44:47,456 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr63REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 422 more)] === [2024-11-28 03:44:47,456 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:44:47,456 INFO L85 PathProgramCache]: Analyzing trace with hash 1544369320, now seen corresponding path program 1 times [2024-11-28 03:44:47,457 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 03:44:47,457 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1022856637] [2024-11-28 03:44:47,457 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:44:47,457 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:44:47,457 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_baab3a94-b378-48f0-85dc-9d3ad2a813c3/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:44:47,460 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_baab3a94-b378-48f0-85dc-9d3ad2a813c3/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:44:47,464 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_baab3a94-b378-48f0-85dc-9d3ad2a813c3/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-28 03:44:47,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:44:47,722 INFO L256 TraceCheckSpWp]: Trace formula consists of 236 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-28 03:44:47,732 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:44:47,742 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2024-11-28 03:44:48,475 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 03:44:48,477 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 9 [2024-11-28 03:44:48,503 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2024-11-28 03:44:48,503 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2024-11-28 03:44:48,515 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:44:48,515 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 03:44:48,515 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 03:44:48,515 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1022856637] [2024-11-28 03:44:48,515 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1022856637] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:44:48,515 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:44:48,515 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-28 03:44:48,515 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [571074521] [2024-11-28 03:44:48,516 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:44:48,516 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-28 03:44:48,516 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 03:44:48,516 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-28 03:44:48,516 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-28 03:44:48,517 INFO L87 Difference]: Start difference. First operand 829 states and 906 transitions. Second operand has 5 states, 4 states have (on average 14.75) internal successors, (59), 5 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:44:51,112 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:44:51,112 INFO L93 Difference]: Finished difference Result 791 states and 868 transitions. [2024-11-28 03:44:51,113 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 03:44:51,113 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 14.75) internal successors, (59), 5 states have internal predecessors, (59), 0 states have call successors, (0), 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 59 [2024-11-28 03:44:51,113 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:44:51,116 INFO L225 Difference]: With dead ends: 791 [2024-11-28 03:44:51,116 INFO L226 Difference]: Without dead ends: 791 [2024-11-28 03:44:51,116 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 55 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2024-11-28 03:44:51,117 INFO L435 NwaCegarLoop]: 388 mSDtfsCounter, 456 mSDsluCounter, 287 mSDsCounter, 0 mSdLazyCounter, 911 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 459 SdHoareTripleChecker+Valid, 675 SdHoareTripleChecker+Invalid, 953 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 911 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2024-11-28 03:44:51,117 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [459 Valid, 675 Invalid, 953 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 911 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2024-11-28 03:44:51,118 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 791 states. [2024-11-28 03:44:51,128 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 791 to 754. [2024-11-28 03:44:51,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 754 states, 477 states have (on average 1.6519916142557651) internal successors, (788), 749 states have internal predecessors, (788), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-28 03:44:51,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 754 states to 754 states and 794 transitions. [2024-11-28 03:44:51,132 INFO L78 Accepts]: Start accepts. Automaton has 754 states and 794 transitions. Word has length 59 [2024-11-28 03:44:51,132 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:44:51,132 INFO L471 AbstractCegarLoop]: Abstraction has 754 states and 794 transitions. [2024-11-28 03:44:51,132 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 14.75) internal successors, (59), 5 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:44:51,133 INFO L276 IsEmpty]: Start isEmpty. Operand 754 states and 794 transitions. [2024-11-28 03:44:51,134 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2024-11-28 03:44:51,134 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:44:51,134 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] [2024-11-28 03:44:51,148 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_baab3a94-b378-48f0-85dc-9d3ad2a813c3/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2024-11-28 03:44:51,334 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_baab3a94-b378-48f0-85dc-9d3ad2a813c3/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:44:51,335 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr69REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 422 more)] === [2024-11-28 03:44:51,335 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:44:51,335 INFO L85 PathProgramCache]: Analyzing trace with hash 213920600, now seen corresponding path program 1 times [2024-11-28 03:44:51,336 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 03:44:51,336 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [40726912] [2024-11-28 03:44:51,336 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:44:51,336 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:44:51,336 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_baab3a94-b378-48f0-85dc-9d3ad2a813c3/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:44:51,338 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_baab3a94-b378-48f0-85dc-9d3ad2a813c3/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:44:51,340 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_baab3a94-b378-48f0-85dc-9d3ad2a813c3/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-11-28 03:44:51,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:44:51,607 INFO L256 TraceCheckSpWp]: Trace formula consists of 263 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-11-28 03:44:51,615 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:44:51,636 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2024-11-28 03:44:51,670 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2024-11-28 03:44:51,681 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2024-11-28 03:44:51,750 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 9 [2024-11-28 03:44:51,778 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:44:51,778 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 03:44:51,779 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 03:44:51,779 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [40726912] [2024-11-28 03:44:51,779 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [40726912] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:44:51,779 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:44:51,779 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-28 03:44:51,779 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1867838364] [2024-11-28 03:44:51,779 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:44:51,780 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-28 03:44:51,780 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 03:44:51,780 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-28 03:44:51,780 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-28 03:44:51,780 INFO L87 Difference]: Start difference. First operand 754 states and 794 transitions. Second operand has 5 states, 4 states have (on average 16.0) internal successors, (64), 5 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:44:54,406 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:44:54,407 INFO L93 Difference]: Finished difference Result 753 states and 793 transitions. [2024-11-28 03:44:54,407 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-28 03:44:54,407 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 16.0) internal successors, (64), 5 states have internal predecessors, (64), 0 states have call successors, (0), 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 64 [2024-11-28 03:44:54,408 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:44:54,410 INFO L225 Difference]: With dead ends: 753 [2024-11-28 03:44:54,410 INFO L226 Difference]: Without dead ends: 753 [2024-11-28 03:44:54,410 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 60 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-28 03:44:54,411 INFO L435 NwaCegarLoop]: 691 mSDtfsCounter, 2 mSDsluCounter, 1077 mSDsCounter, 0 mSdLazyCounter, 1003 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 1768 SdHoareTripleChecker+Invalid, 1004 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1003 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2024-11-28 03:44:54,411 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 1768 Invalid, 1004 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1003 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2024-11-28 03:44:54,412 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 753 states. [2024-11-28 03:44:54,420 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 753 to 753. [2024-11-28 03:44:54,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 753 states, 477 states have (on average 1.649895178197065) internal successors, (787), 748 states have internal predecessors, (787), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-28 03:44:54,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 753 states to 753 states and 793 transitions. [2024-11-28 03:44:54,423 INFO L78 Accepts]: Start accepts. Automaton has 753 states and 793 transitions. Word has length 64 [2024-11-28 03:44:54,423 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:44:54,423 INFO L471 AbstractCegarLoop]: Abstraction has 753 states and 793 transitions. [2024-11-28 03:44:54,423 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 16.0) internal successors, (64), 5 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:44:54,424 INFO L276 IsEmpty]: Start isEmpty. Operand 753 states and 793 transitions. [2024-11-28 03:44:54,424 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2024-11-28 03:44:54,424 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:44:54,425 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] [2024-11-28 03:44:54,437 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_baab3a94-b378-48f0-85dc-9d3ad2a813c3/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2024-11-28 03:44:54,625 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_baab3a94-b378-48f0-85dc-9d3ad2a813c3/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:44:54,625 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr68REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 422 more)] === [2024-11-28 03:44:54,625 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:44:54,626 INFO L85 PathProgramCache]: Analyzing trace with hash 213920599, now seen corresponding path program 1 times [2024-11-28 03:44:54,626 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 03:44:54,626 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1582850853] [2024-11-28 03:44:54,626 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:44:54,626 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:44:54,626 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_baab3a94-b378-48f0-85dc-9d3ad2a813c3/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:44:54,628 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_baab3a94-b378-48f0-85dc-9d3ad2a813c3/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:44:54,632 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_baab3a94-b378-48f0-85dc-9d3ad2a813c3/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-11-28 03:44:54,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:44:54,843 INFO L256 TraceCheckSpWp]: Trace formula consists of 263 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-28 03:44:54,846 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:44:54,872 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2024-11-28 03:44:54,888 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2024-11-28 03:44:54,923 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2024-11-28 03:44:54,939 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:44:54,939 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 03:44:54,939 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 03:44:54,939 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1582850853] [2024-11-28 03:44:54,940 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1582850853] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:44:54,940 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:44:54,940 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-28 03:44:54,940 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1195799078] [2024-11-28 03:44:54,940 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:44:54,940 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-28 03:44:54,940 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 03:44:54,941 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-28 03:44:54,941 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-28 03:44:54,941 INFO L87 Difference]: Start difference. First operand 753 states and 793 transitions. Second operand has 5 states, 4 states have (on average 16.0) internal successors, (64), 5 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:44:57,427 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:44:57,427 INFO L93 Difference]: Finished difference Result 752 states and 792 transitions. [2024-11-28 03:44:57,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-28 03:44:57,428 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 16.0) internal successors, (64), 5 states have internal predecessors, (64), 0 states have call successors, (0), 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 64 [2024-11-28 03:44:57,428 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:44:57,431 INFO L225 Difference]: With dead ends: 752 [2024-11-28 03:44:57,431 INFO L226 Difference]: Without dead ends: 752 [2024-11-28 03:44:57,431 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 60 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-28 03:44:57,432 INFO L435 NwaCegarLoop]: 691 mSDtfsCounter, 1 mSDsluCounter, 1052 mSDsCounter, 0 mSdLazyCounter, 1025 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 1743 SdHoareTripleChecker+Invalid, 1026 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1025 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2024-11-28 03:44:57,432 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 1743 Invalid, 1026 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1025 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2024-11-28 03:44:57,433 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 752 states. [2024-11-28 03:44:57,442 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 752 to 752. [2024-11-28 03:44:57,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 752 states, 476 states have (on average 1.6512605042016806) internal successors, (786), 747 states have internal predecessors, (786), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-28 03:44:57,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 752 states to 752 states and 792 transitions. [2024-11-28 03:44:57,446 INFO L78 Accepts]: Start accepts. Automaton has 752 states and 792 transitions. Word has length 64 [2024-11-28 03:44:57,446 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:44:57,446 INFO L471 AbstractCegarLoop]: Abstraction has 752 states and 792 transitions. [2024-11-28 03:44:57,446 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 16.0) internal successors, (64), 5 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:44:57,446 INFO L276 IsEmpty]: Start isEmpty. Operand 752 states and 792 transitions. [2024-11-28 03:44:57,447 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2024-11-28 03:44:57,447 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:44:57,448 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:44:57,462 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_baab3a94-b378-48f0-85dc-9d3ad2a813c3/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2024-11-28 03:44:57,648 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_baab3a94-b378-48f0-85dc-9d3ad2a813c3/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:44:57,648 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr72REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 422 more)] === [2024-11-28 03:44:57,649 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:44:57,649 INFO L85 PathProgramCache]: Analyzing trace with hash -113414210, now seen corresponding path program 1 times [2024-11-28 03:44:57,649 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 03:44:57,649 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [131806646] [2024-11-28 03:44:57,650 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:44:57,650 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:44:57,650 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_baab3a94-b378-48f0-85dc-9d3ad2a813c3/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:44:57,651 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_baab3a94-b378-48f0-85dc-9d3ad2a813c3/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:44:57,654 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_baab3a94-b378-48f0-85dc-9d3ad2a813c3/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-11-28 03:44:57,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:44:57,890 INFO L256 TraceCheckSpWp]: Trace formula consists of 289 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-28 03:44:57,893 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:44:57,908 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2024-11-28 03:44:58,026 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2024-11-28 03:44:58,047 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:44:58,048 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 03:44:58,048 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 03:44:58,048 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [131806646] [2024-11-28 03:44:58,048 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [131806646] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:44:58,048 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:44:58,048 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-28 03:44:58,048 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1497843446] [2024-11-28 03:44:58,049 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:44:58,049 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-28 03:44:58,049 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 03:44:58,050 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-28 03:44:58,051 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-11-28 03:44:58,051 INFO L87 Difference]: Start difference. First operand 752 states and 792 transitions. Second operand has 7 states, 5 states have (on average 14.0) internal successors, (70), 6 states have internal predecessors, (70), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-28 03:45:00,903 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:45:00,904 INFO L93 Difference]: Finished difference Result 764 states and 807 transitions. [2024-11-28 03:45:00,904 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-28 03:45:00,904 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 5 states have (on average 14.0) internal successors, (70), 6 states have internal predecessors, (70), 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 72 [2024-11-28 03:45:00,905 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:45:00,909 INFO L225 Difference]: With dead ends: 764 [2024-11-28 03:45:00,909 INFO L226 Difference]: Without dead ends: 764 [2024-11-28 03:45:00,909 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 66 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-11-28 03:45:00,910 INFO L435 NwaCegarLoop]: 683 mSDtfsCounter, 6 mSDsluCounter, 1755 mSDsCounter, 0 mSdLazyCounter, 1029 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 2438 SdHoareTripleChecker+Invalid, 1033 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 1029 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2024-11-28 03:45:00,910 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 2438 Invalid, 1033 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 1029 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2024-11-28 03:45:00,912 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 764 states. [2024-11-28 03:45:00,924 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 764 to 758. [2024-11-28 03:45:00,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 758 states, 481 states have (on average 1.6486486486486487) internal successors, (793), 752 states have internal predecessors, (793), 3 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (6), 4 states have call predecessors, (6), 3 states have call successors, (6) [2024-11-28 03:45:00,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 758 states to 758 states and 802 transitions. [2024-11-28 03:45:00,927 INFO L78 Accepts]: Start accepts. Automaton has 758 states and 802 transitions. Word has length 72 [2024-11-28 03:45:00,928 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:45:00,928 INFO L471 AbstractCegarLoop]: Abstraction has 758 states and 802 transitions. [2024-11-28 03:45:00,928 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 5 states have (on average 14.0) internal successors, (70), 6 states have internal predecessors, (70), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-28 03:45:00,928 INFO L276 IsEmpty]: Start isEmpty. Operand 758 states and 802 transitions. [2024-11-28 03:45:00,929 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2024-11-28 03:45:00,929 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:45:00,929 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:45:00,945 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_baab3a94-b378-48f0-85dc-9d3ad2a813c3/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2024-11-28 03:45:01,130 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_baab3a94-b378-48f0-85dc-9d3ad2a813c3/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:45:01,130 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr73REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 422 more)] === [2024-11-28 03:45:01,130 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:45:01,130 INFO L85 PathProgramCache]: Analyzing trace with hash -113414209, now seen corresponding path program 1 times [2024-11-28 03:45:01,131 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 03:45:01,131 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1819348846] [2024-11-28 03:45:01,131 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:45:01,131 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:45:01,131 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_baab3a94-b378-48f0-85dc-9d3ad2a813c3/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:45:01,133 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_baab3a94-b378-48f0-85dc-9d3ad2a813c3/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:45:01,134 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_baab3a94-b378-48f0-85dc-9d3ad2a813c3/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-11-28 03:45:01,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:45:01,402 INFO L256 TraceCheckSpWp]: Trace formula consists of 289 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-28 03:45:01,404 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:45:01,432 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:45:01,432 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 03:45:01,432 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 03:45:01,432 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1819348846] [2024-11-28 03:45:01,433 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1819348846] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:45:01,433 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:45:01,433 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-28 03:45:01,433 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1192121436] [2024-11-28 03:45:01,433 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:45:01,434 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 03:45:01,434 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 03:45:01,435 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 03:45:01,435 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 03:45:01,435 INFO L87 Difference]: Start difference. First operand 758 states and 802 transitions. Second operand has 4 states, 4 states have (on average 17.5) internal successors, (70), 4 states have internal predecessors, (70), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-28 03:45:01,495 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:45:01,495 INFO L93 Difference]: Finished difference Result 755 states and 796 transitions. [2024-11-28 03:45:01,496 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 03:45:01,496 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.5) internal successors, (70), 4 states have internal predecessors, (70), 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 72 [2024-11-28 03:45:01,497 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:45:01,500 INFO L225 Difference]: With dead ends: 755 [2024-11-28 03:45:01,502 INFO L226 Difference]: Without dead ends: 755 [2024-11-28 03:45:01,502 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 69 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 03:45:01,503 INFO L435 NwaCegarLoop]: 691 mSDtfsCounter, 0 mSDsluCounter, 1377 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 2068 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 03:45:01,505 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 2068 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 03:45:01,507 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 755 states. [2024-11-28 03:45:01,518 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 755 to 755. [2024-11-28 03:45:01,520 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 755 states, 478 states have (on average 1.6506276150627615) internal successors, (789), 750 states have internal predecessors, (789), 3 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2024-11-28 03:45:01,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 755 states to 755 states and 796 transitions. [2024-11-28 03:45:01,523 INFO L78 Accepts]: Start accepts. Automaton has 755 states and 796 transitions. Word has length 72 [2024-11-28 03:45:01,523 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:45:01,523 INFO L471 AbstractCegarLoop]: Abstraction has 755 states and 796 transitions. [2024-11-28 03:45:01,523 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.5) internal successors, (70), 4 states have internal predecessors, (70), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-28 03:45:01,524 INFO L276 IsEmpty]: Start isEmpty. Operand 755 states and 796 transitions. [2024-11-28 03:45:01,524 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2024-11-28 03:45:01,525 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:45:01,525 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:45:01,541 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_baab3a94-b378-48f0-85dc-9d3ad2a813c3/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2024-11-28 03:45:01,725 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_baab3a94-b378-48f0-85dc-9d3ad2a813c3/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:45:01,725 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr72REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 422 more)] === [2024-11-28 03:45:01,726 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:45:01,726 INFO L85 PathProgramCache]: Analyzing trace with hash 2129670047, now seen corresponding path program 1 times [2024-11-28 03:45:01,726 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 03:45:01,726 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2075092279] [2024-11-28 03:45:01,726 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:45:01,726 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:45:01,727 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_baab3a94-b378-48f0-85dc-9d3ad2a813c3/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:45:01,728 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_baab3a94-b378-48f0-85dc-9d3ad2a813c3/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:45:01,730 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_baab3a94-b378-48f0-85dc-9d3ad2a813c3/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2024-11-28 03:45:01,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:45:01,991 INFO L256 TraceCheckSpWp]: Trace formula consists of 300 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-28 03:45:01,994 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:45:02,039 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:45:02,039 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:45:02,134 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:45:02,134 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 03:45:02,134 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2075092279] [2024-11-28 03:45:02,135 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2075092279] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 03:45:02,135 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-28 03:45:02,135 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2024-11-28 03:45:02,135 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1463581209] [2024-11-28 03:45:02,135 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-28 03:45:02,136 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-28 03:45:02,136 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 03:45:02,136 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-28 03:45:02,136 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2024-11-28 03:45:02,137 INFO L87 Difference]: Start difference. First operand 755 states and 796 transitions. Second operand has 8 states, 8 states have (on average 9.375) internal successors, (75), 8 states have internal predecessors, (75), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-28 03:45:02,387 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:45:02,387 INFO L93 Difference]: Finished difference Result 767 states and 813 transitions. [2024-11-28 03:45:02,388 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-28 03:45:02,388 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 9.375) internal successors, (75), 8 states have internal predecessors, (75), 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 73 [2024-11-28 03:45:02,389 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:45:02,391 INFO L225 Difference]: With dead ends: 767 [2024-11-28 03:45:02,391 INFO L226 Difference]: Without dead ends: 767 [2024-11-28 03:45:02,391 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 147 GetRequests, 138 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=44, Invalid=66, Unknown=0, NotChecked=0, Total=110 [2024-11-28 03:45:02,392 INFO L435 NwaCegarLoop]: 691 mSDtfsCounter, 6 mSDsluCounter, 1380 mSDsCounter, 0 mSdLazyCounter, 52 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 2071 SdHoareTripleChecker+Invalid, 59 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 52 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-28 03:45:02,392 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 2071 Invalid, 59 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 52 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-28 03:45:02,395 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 767 states. [2024-11-28 03:45:02,406 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 767 to 765. [2024-11-28 03:45:02,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 765 states, 487 states have (on average 1.6509240246406571) internal successors, (804), 759 states have internal predecessors, (804), 3 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2024-11-28 03:45:02,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 765 states to 765 states and 811 transitions. [2024-11-28 03:45:02,410 INFO L78 Accepts]: Start accepts. Automaton has 765 states and 811 transitions. Word has length 73 [2024-11-28 03:45:02,410 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:45:02,411 INFO L471 AbstractCegarLoop]: Abstraction has 765 states and 811 transitions. [2024-11-28 03:45:02,411 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.375) internal successors, (75), 8 states have internal predecessors, (75), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-28 03:45:02,412 INFO L276 IsEmpty]: Start isEmpty. Operand 765 states and 811 transitions. [2024-11-28 03:45:02,413 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2024-11-28 03:45:02,414 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:45:02,414 INFO L218 NwaCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:45:02,431 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_baab3a94-b378-48f0-85dc-9d3ad2a813c3/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2024-11-28 03:45:02,614 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_baab3a94-b378-48f0-85dc-9d3ad2a813c3/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:45:02,615 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr72REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 422 more)] === [2024-11-28 03:45:02,616 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:45:02,617 INFO L85 PathProgramCache]: Analyzing trace with hash 803135486, now seen corresponding path program 2 times [2024-11-28 03:45:02,617 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 03:45:02,618 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [948848130] [2024-11-28 03:45:02,618 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 03:45:02,618 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:45:02,618 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_baab3a94-b378-48f0-85dc-9d3ad2a813c3/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:45:02,621 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_baab3a94-b378-48f0-85dc-9d3ad2a813c3/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:45:02,625 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_baab3a94-b378-48f0-85dc-9d3ad2a813c3/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2024-11-28 03:45:14,213 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 03:45:14,214 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:45:14,226 INFO L256 TraceCheckSpWp]: Trace formula consists of 333 conjuncts, 17 conjuncts are in the unsatisfiable core [2024-11-28 03:45:14,230 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:45:14,395 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2024-11-28 03:45:14,396 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2024-11-28 03:45:14,425 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2024-11-28 03:45:14,738 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-28 03:45:14,739 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 44 treesize of output 43 [2024-11-28 03:45:14,799 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 15 [2024-11-28 03:45:14,827 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-28 03:45:14,827 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:45:14,960 INFO L349 Elim1Store]: treesize reduction 7, result has 63.2 percent of original size [2024-11-28 03:45:14,960 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 24 [2024-11-28 03:45:14,979 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_850 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_ULTIMATE.start_main_#t~mem33#1.base| (select (select (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem33#1.base| v_ArrVal_850) |c_ULTIMATE.start_main_~user~0#1.base|) (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|)))) is different from false [2024-11-28 03:45:14,991 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 03:45:14,991 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [948848130] [2024-11-28 03:45:14,991 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [948848130] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:45:14,991 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [432141419] [2024-11-28 03:45:14,991 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 03:45:14,991 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-28 03:45:14,992 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_baab3a94-b378-48f0-85dc-9d3ad2a813c3/bin/uautomizer-verify-aQ6SnzHsRB/cvc4 [2024-11-28 03:45:14,995 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_baab3a94-b378-48f0-85dc-9d3ad2a813c3/bin/uautomizer-verify-aQ6SnzHsRB/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-28 03:45:14,999 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_baab3a94-b378-48f0-85dc-9d3ad2a813c3/bin/uautomizer-verify-aQ6SnzHsRB/cvc4 --incremental --print-success --lang smt (19)] Waiting until timeout for monitored process [2024-11-28 03:45:16,042 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 03:45:16,042 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:45:16,072 INFO L256 TraceCheckSpWp]: Trace formula consists of 333 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-28 03:45:16,074 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:45:16,339 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:45:16,339 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:45:16,725 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:45:16,725 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [432141419] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 03:45:16,725 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 03:45:16,725 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 8, 8] total 24 [2024-11-28 03:45:16,726 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1361306600] [2024-11-28 03:45:16,726 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 03:45:16,726 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2024-11-28 03:45:16,726 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 03:45:16,727 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2024-11-28 03:45:16,727 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=513, Unknown=1, NotChecked=46, Total=650 [2024-11-28 03:45:16,727 INFO L87 Difference]: Start difference. First operand 765 states and 811 transitions. Second operand has 24 states, 23 states have (on average 6.086956521739131) internal successors, (140), 23 states have internal predecessors, (140), 2 states have call successors, (2), 2 states have call predecessors, (2), 3 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-28 03:45:27,188 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:45:27,188 INFO L93 Difference]: Finished difference Result 781 states and 834 transitions. [2024-11-28 03:45:27,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2024-11-28 03:45:27,189 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 23 states have (on average 6.086956521739131) internal successors, (140), 23 states have internal predecessors, (140), 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 76 [2024-11-28 03:45:27,190 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:45:27,192 INFO L225 Difference]: With dead ends: 781 [2024-11-28 03:45:27,193 INFO L226 Difference]: Without dead ends: 777 [2024-11-28 03:45:27,194 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 257 GetRequests, 206 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 472 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=413, Invalid=2242, Unknown=1, NotChecked=100, Total=2756 [2024-11-28 03:45:27,194 INFO L435 NwaCegarLoop]: 462 mSDtfsCounter, 467 mSDsluCounter, 6127 mSDsCounter, 0 mSdLazyCounter, 4277 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 471 SdHoareTripleChecker+Valid, 6589 SdHoareTripleChecker+Invalid, 4295 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 4277 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.1s IncrementalHoareTripleChecker+Time [2024-11-28 03:45:27,195 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [471 Valid, 6589 Invalid, 4295 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [18 Valid, 4277 Invalid, 0 Unknown, 0 Unchecked, 9.1s Time] [2024-11-28 03:45:27,196 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 777 states. [2024-11-28 03:45:27,208 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 777 to 773. [2024-11-28 03:45:27,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 773 states, 496 states have (on average 1.6431451612903225) internal successors, (815), 767 states have internal predecessors, (815), 3 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2024-11-28 03:45:27,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 773 states to 773 states and 822 transitions. [2024-11-28 03:45:27,212 INFO L78 Accepts]: Start accepts. Automaton has 773 states and 822 transitions. Word has length 76 [2024-11-28 03:45:27,212 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:45:27,212 INFO L471 AbstractCegarLoop]: Abstraction has 773 states and 822 transitions. [2024-11-28 03:45:27,212 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 23 states have (on average 6.086956521739131) internal successors, (140), 23 states have internal predecessors, (140), 2 states have call successors, (2), 2 states have call predecessors, (2), 3 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-28 03:45:27,212 INFO L276 IsEmpty]: Start isEmpty. Operand 773 states and 822 transitions. [2024-11-28 03:45:27,213 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2024-11-28 03:45:27,213 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:45:27,214 INFO L218 NwaCegarLoop]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:45:27,244 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_baab3a94-b378-48f0-85dc-9d3ad2a813c3/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2024-11-28 03:45:27,419 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_baab3a94-b378-48f0-85dc-9d3ad2a813c3/bin/uautomizer-verify-aQ6SnzHsRB/cvc4 --incremental --print-success --lang smt (19)] Ended with exit code 0 [2024-11-28 03:45:27,614 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_baab3a94-b378-48f0-85dc-9d3ad2a813c3/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_baab3a94-b378-48f0-85dc-9d3ad2a813c3/bin/uautomizer-verify-aQ6SnzHsRB/cvc4 --incremental --print-success --lang smt [2024-11-28 03:45:27,614 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr73REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 422 more)] === [2024-11-28 03:45:27,615 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:45:27,615 INFO L85 PathProgramCache]: Analyzing trace with hash -1325921185, now seen corresponding path program 1 times [2024-11-28 03:45:27,615 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 03:45:27,615 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [745072451] [2024-11-28 03:45:27,615 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:45:27,615 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:45:27,616 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_baab3a94-b378-48f0-85dc-9d3ad2a813c3/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:45:27,618 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_baab3a94-b378-48f0-85dc-9d3ad2a813c3/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:45:27,624 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_baab3a94-b378-48f0-85dc-9d3ad2a813c3/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2024-11-28 03:45:27,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:45:27,929 INFO L256 TraceCheckSpWp]: Trace formula consists of 399 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-28 03:45:27,931 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:45:28,160 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:45:28,160 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:45:29,001 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:45:29,002 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 03:45:29,002 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [745072451] [2024-11-28 03:45:29,002 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [745072451] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 03:45:29,002 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-28 03:45:29,002 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 26 [2024-11-28 03:45:29,002 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1165054639] [2024-11-28 03:45:29,002 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-28 03:45:29,003 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2024-11-28 03:45:29,003 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 03:45:29,003 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2024-11-28 03:45:29,004 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=193, Invalid=457, Unknown=0, NotChecked=0, Total=650 [2024-11-28 03:45:29,004 INFO L87 Difference]: Start difference. First operand 773 states and 822 transitions. Second operand has 26 states, 26 states have (on average 3.576923076923077) internal successors, (93), 26 states have internal predecessors, (93), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-28 03:45:31,566 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:45:31,566 INFO L93 Difference]: Finished difference Result 797 states and 861 transitions. [2024-11-28 03:45:31,567 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2024-11-28 03:45:31,567 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 3.576923076923077) internal successors, (93), 26 states have internal predecessors, (93), 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 82 [2024-11-28 03:45:31,567 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:45:31,570 INFO L225 Difference]: With dead ends: 797 [2024-11-28 03:45:31,570 INFO L226 Difference]: Without dead ends: 791 [2024-11-28 03:45:31,571 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 183 GetRequests, 138 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 100 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=728, Invalid=1434, Unknown=0, NotChecked=0, Total=2162 [2024-11-28 03:45:31,572 INFO L435 NwaCegarLoop]: 691 mSDtfsCounter, 18 mSDsluCounter, 10308 mSDsCounter, 0 mSdLazyCounter, 598 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 10999 SdHoareTripleChecker+Invalid, 611 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 598 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2024-11-28 03:45:31,572 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 10999 Invalid, 611 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 598 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2024-11-28 03:45:31,573 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 791 states. [2024-11-28 03:45:31,584 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 791 to 791. [2024-11-28 03:45:31,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 791 states, 514 states have (on average 1.6303501945525292) internal successors, (838), 785 states have internal predecessors, (838), 3 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2024-11-28 03:45:31,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 791 states to 791 states and 845 transitions. [2024-11-28 03:45:31,588 INFO L78 Accepts]: Start accepts. Automaton has 791 states and 845 transitions. Word has length 82 [2024-11-28 03:45:31,589 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:45:31,589 INFO L471 AbstractCegarLoop]: Abstraction has 791 states and 845 transitions. [2024-11-28 03:45:31,589 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 3.576923076923077) internal successors, (93), 26 states have internal predecessors, (93), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-28 03:45:31,589 INFO L276 IsEmpty]: Start isEmpty. Operand 791 states and 845 transitions. [2024-11-28 03:45:31,590 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2024-11-28 03:45:31,590 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:45:31,590 INFO L218 NwaCegarLoop]: trace histogram [22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:45:31,607 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_baab3a94-b378-48f0-85dc-9d3ad2a813c3/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2024-11-28 03:45:31,791 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_baab3a94-b378-48f0-85dc-9d3ad2a813c3/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:45:31,791 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr73REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 422 more)] === [2024-11-28 03:45:31,791 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:45:31,791 INFO L85 PathProgramCache]: Analyzing trace with hash 1034947871, now seen corresponding path program 2 times [2024-11-28 03:45:31,792 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 03:45:31,792 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [24923830] [2024-11-28 03:45:31,792 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 03:45:31,792 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:45:31,792 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_baab3a94-b378-48f0-85dc-9d3ad2a813c3/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:45:31,794 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_baab3a94-b378-48f0-85dc-9d3ad2a813c3/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:45:31,795 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_baab3a94-b378-48f0-85dc-9d3ad2a813c3/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2024-11-28 03:45:42,949 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 03:45:42,949 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:45:42,968 INFO L256 TraceCheckSpWp]: Trace formula consists of 531 conjuncts, 64 conjuncts are in the unsatisfiable core [2024-11-28 03:45:42,977 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:45:43,131 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2024-11-28 03:45:43,147 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2024-11-28 03:45:43,148 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2024-11-28 03:45:43,189 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2024-11-28 03:45:43,207 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2024-11-28 03:45:43,338 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 10 [2024-11-28 03:45:43,345 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 3 [2024-11-28 03:45:43,989 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-28 03:45:43,990 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 62 treesize of output 57 [2024-11-28 03:45:44,006 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 13 [2024-11-28 03:45:44,062 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 13 [2024-11-28 03:45:44,073 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 3 [2024-11-28 03:45:44,107 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 231 trivial. 0 not checked. [2024-11-28 03:45:44,107 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:45:44,844 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 03:45:44,844 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [24923830] [2024-11-28 03:45:44,844 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [24923830] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:45:44,844 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [479630057] [2024-11-28 03:45:44,844 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 03:45:44,844 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-28 03:45:44,844 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_baab3a94-b378-48f0-85dc-9d3ad2a813c3/bin/uautomizer-verify-aQ6SnzHsRB/cvc4 [2024-11-28 03:45:44,846 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_baab3a94-b378-48f0-85dc-9d3ad2a813c3/bin/uautomizer-verify-aQ6SnzHsRB/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-28 03:45:44,848 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_baab3a94-b378-48f0-85dc-9d3ad2a813c3/bin/uautomizer-verify-aQ6SnzHsRB/cvc4 --incremental --print-success --lang smt (22)] Waiting until timeout for monitored process [2024-11-28 03:45:45,991 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 03:45:45,991 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:45:46,004 INFO L256 TraceCheckSpWp]: Trace formula consists of 531 conjuncts, 25 conjuncts are in the unsatisfiable core [2024-11-28 03:45:46,006 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:45:47,292 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:45:47,292 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:45:50,243 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:45:50,243 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [479630057] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 03:45:50,243 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 03:45:50,243 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 26, 26] total 58 [2024-11-28 03:45:50,244 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [196684185] [2024-11-28 03:45:50,244 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 03:45:50,244 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 58 states [2024-11-28 03:45:50,244 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 03:45:50,245 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 58 interpolants. [2024-11-28 03:45:50,246 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=700, Invalid=2954, Unknown=6, NotChecked=0, Total=3660 [2024-11-28 03:45:50,246 INFO L87 Difference]: Start difference. First operand 791 states and 845 transitions. Second operand has 58 states, 57 states have (on average 3.087719298245614) internal successors, (176), 58 states have internal predecessors, (176), 2 states have call successors, (2), 2 states have call predecessors, (2), 3 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-28 03:46:23,550 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:46:23,550 INFO L93 Difference]: Finished difference Result 834 states and 918 transitions. [2024-11-28 03:46:23,550 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 82 states. [2024-11-28 03:46:23,551 INFO L78 Accepts]: Start accepts. Automaton has has 58 states, 57 states have (on average 3.087719298245614) internal successors, (176), 58 states have internal predecessors, (176), 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 94 [2024-11-28 03:46:23,551 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:46:23,556 INFO L225 Difference]: With dead ends: 834 [2024-11-28 03:46:23,556 INFO L226 Difference]: Without dead ends: 826 [2024-11-28 03:46:23,560 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 361 GetRequests, 226 SyntacticMatches, 1 SemanticMatches, 134 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3140 ImplicationChecksByTransitivity, 13.8s TimeCoverageRelationStatistics Valid=3108, Invalid=15246, Unknown=6, NotChecked=0, Total=18360 [2024-11-28 03:46:23,561 INFO L435 NwaCegarLoop]: 462 mSDtfsCounter, 483 mSDsluCounter, 12419 mSDsCounter, 0 mSdLazyCounter, 10423 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 20.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 486 SdHoareTripleChecker+Valid, 12881 SdHoareTripleChecker+Invalid, 10463 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 10423 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 23.4s IncrementalHoareTripleChecker+Time [2024-11-28 03:46:23,561 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [486 Valid, 12881 Invalid, 10463 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [40 Valid, 10423 Invalid, 0 Unknown, 0 Unchecked, 23.4s Time] [2024-11-28 03:46:23,562 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 826 states. [2024-11-28 03:46:23,572 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 826 to 824. [2024-11-28 03:46:23,573 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 824 states, 548 states have (on average 1.604014598540146) internal successors, (879), 818 states have internal predecessors, (879), 3 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2024-11-28 03:46:23,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 824 states to 824 states and 886 transitions. [2024-11-28 03:46:23,575 INFO L78 Accepts]: Start accepts. Automaton has 824 states and 886 transitions. Word has length 94 [2024-11-28 03:46:23,575 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:46:23,576 INFO L471 AbstractCegarLoop]: Abstraction has 824 states and 886 transitions. [2024-11-28 03:46:23,576 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 58 states, 57 states have (on average 3.087719298245614) internal successors, (176), 58 states have internal predecessors, (176), 2 states have call successors, (2), 2 states have call predecessors, (2), 3 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-28 03:46:23,576 INFO L276 IsEmpty]: Start isEmpty. Operand 824 states and 886 transitions. [2024-11-28 03:46:23,577 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2024-11-28 03:46:23,577 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:46:23,577 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] [2024-11-28 03:46:23,606 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_baab3a94-b378-48f0-85dc-9d3ad2a813c3/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Ended with exit code 0 [2024-11-28 03:46:23,783 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_baab3a94-b378-48f0-85dc-9d3ad2a813c3/bin/uautomizer-verify-aQ6SnzHsRB/cvc4 --incremental --print-success --lang smt (22)] Ended with exit code 0 [2024-11-28 03:46:23,978 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_baab3a94-b378-48f0-85dc-9d3ad2a813c3/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_baab3a94-b378-48f0-85dc-9d3ad2a813c3/bin/uautomizer-verify-aQ6SnzHsRB/cvc4 --incremental --print-success --lang smt [2024-11-28 03:46:23,978 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr76REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 422 more)] === [2024-11-28 03:46:23,978 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:46:23,979 INFO L85 PathProgramCache]: Analyzing trace with hash -476960561, now seen corresponding path program 1 times [2024-11-28 03:46:23,979 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 03:46:23,979 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1009231847] [2024-11-28 03:46:23,979 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:46:23,979 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:46:23,979 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_baab3a94-b378-48f0-85dc-9d3ad2a813c3/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:46:23,982 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_baab3a94-b378-48f0-85dc-9d3ad2a813c3/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:46:23,983 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_baab3a94-b378-48f0-85dc-9d3ad2a813c3/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2024-11-28 03:46:24,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:46:24,539 INFO L256 TraceCheckSpWp]: Trace formula consists of 793 conjuncts, 59 conjuncts are in the unsatisfiable core [2024-11-28 03:46:24,548 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:46:24,670 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2024-11-28 03:46:24,670 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2024-11-28 03:46:24,693 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2024-11-28 03:46:25,365 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-28 03:46:25,365 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 44 treesize of output 43 [2024-11-28 03:46:25,507 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-28 03:46:25,507 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 44 treesize of output 43 [2024-11-28 03:46:25,527 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 15 [2024-11-28 03:46:25,565 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 946 trivial. 0 not checked. [2024-11-28 03:46:25,565 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:46:25,696 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_2051 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (_ bv1 1) (select |c_#valid| (let ((.cse0 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (store |c_#memory_$Pointer$#1.base| (select (select |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse0) v_ArrVal_2051) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0)))))) is different from false [2024-11-28 03:46:26,170 INFO L349 Elim1Store]: treesize reduction 7, result has 77.4 percent of original size [2024-11-28 03:46:26,170 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 37 treesize of output 36 [2024-11-28 03:46:26,182 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_2097 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_2051 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_ULTIMATE.start_main_#t~mem33#1.base| (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (let ((.cse0 (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem33#1.base| v_ArrVal_2097))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_2051)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))) is different from false [2024-11-28 03:46:26,185 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 03:46:26,185 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1009231847] [2024-11-28 03:46:26,185 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1009231847] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:46:26,185 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [298536351] [2024-11-28 03:46:26,185 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:46:26,185 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-28 03:46:26,185 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_baab3a94-b378-48f0-85dc-9d3ad2a813c3/bin/uautomizer-verify-aQ6SnzHsRB/cvc4 [2024-11-28 03:46:26,190 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_baab3a94-b378-48f0-85dc-9d3ad2a813c3/bin/uautomizer-verify-aQ6SnzHsRB/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-28 03:46:26,192 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_baab3a94-b378-48f0-85dc-9d3ad2a813c3/bin/uautomizer-verify-aQ6SnzHsRB/cvc4 --incremental --print-success --lang smt (24)] Waiting until timeout for monitored process [2024-11-28 03:46:28,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:46:28,975 INFO L256 TraceCheckSpWp]: Trace formula consists of 793 conjuncts, 63 conjuncts are in the unsatisfiable core [2024-11-28 03:46:28,986 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:46:29,052 INFO L349 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2024-11-28 03:46:29,052 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 [2024-11-28 03:46:29,504 INFO L349 Elim1Store]: treesize reduction 54, result has 29.9 percent of original size [2024-11-28 03:46:29,505 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 [2024-11-28 03:46:29,587 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 [2024-11-28 03:46:29,877 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 [2024-11-28 03:46:31,709 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-28 03:46:31,709 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 54 treesize of output 51 [2024-11-28 03:46:32,046 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-28 03:46:32,046 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 [2024-11-28 03:46:32,090 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 [2024-11-28 03:46:32,177 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 946 trivial. 0 not checked. [2024-11-28 03:46:32,177 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:46:32,748 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_2051 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_2550 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (_ bv1 1) (select |c_#valid| (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (let ((.cse0 (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem33#1.base| v_ArrVal_2550))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_2051)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))))) is different from false [2024-11-28 03:46:32,751 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [298536351] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:46:32,751 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-28 03:46:32,751 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 9] total 21 [2024-11-28 03:46:32,752 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1507604712] [2024-11-28 03:46:32,752 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-28 03:46:32,752 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2024-11-28 03:46:32,752 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 03:46:32,753 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2024-11-28 03:46:32,753 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=459, Unknown=10, NotChecked=138, Total=702 [2024-11-28 03:46:32,753 INFO L87 Difference]: Start difference. First operand 824 states and 886 transitions. Second operand has 22 states, 19 states have (on average 7.894736842105263) internal successors, (150), 21 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) [2024-11-28 03:46:43,821 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:46:43,821 INFO L93 Difference]: Finished difference Result 1500 states and 1614 transitions. [2024-11-28 03:46:43,822 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2024-11-28 03:46:43,822 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 19 states have (on average 7.894736842105263) internal successors, (150), 21 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 [2024-11-28 03:46:43,822 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:46:43,826 INFO L225 Difference]: With dead ends: 1500 [2024-11-28 03:46:43,826 INFO L226 Difference]: Without dead ends: 1500 [2024-11-28 03:46:43,827 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 265 GetRequests, 223 SyntacticMatches, 2 SemanticMatches, 40 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 364 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=215, Invalid=1265, Unknown=14, NotChecked=228, Total=1722 [2024-11-28 03:46:43,827 INFO L435 NwaCegarLoop]: 368 mSDtfsCounter, 1038 mSDsluCounter, 4663 mSDsCounter, 0 mSdLazyCounter, 5059 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1044 SdHoareTripleChecker+Valid, 5031 SdHoareTripleChecker+Invalid, 5079 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 5059 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.4s IncrementalHoareTripleChecker+Time [2024-11-28 03:46:43,828 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1044 Valid, 5031 Invalid, 5079 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 5059 Invalid, 0 Unknown, 0 Unchecked, 10.4s Time] [2024-11-28 03:46:43,829 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1500 states. [2024-11-28 03:46:43,840 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1500 to 823. [2024-11-28 03:46:43,842 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 823 states, 548 states have (on average 1.602189781021898) internal successors, (878), 817 states have internal predecessors, (878), 3 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2024-11-28 03:46:43,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 823 states to 823 states and 885 transitions. [2024-11-28 03:46:43,843 INFO L78 Accepts]: Start accepts. Automaton has 823 states and 885 transitions. Word has length 119 [2024-11-28 03:46:43,843 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:46:43,844 INFO L471 AbstractCegarLoop]: Abstraction has 823 states and 885 transitions. [2024-11-28 03:46:43,844 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 19 states have (on average 7.894736842105263) internal successors, (150), 21 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) [2024-11-28 03:46:43,844 INFO L276 IsEmpty]: Start isEmpty. Operand 823 states and 885 transitions. [2024-11-28 03:46:43,845 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2024-11-28 03:46:43,845 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:46:43,845 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] [2024-11-28 03:46:43,858 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_baab3a94-b378-48f0-85dc-9d3ad2a813c3/bin/uautomizer-verify-aQ6SnzHsRB/cvc4 --incremental --print-success --lang smt (24)] Forceful destruction successful, exit code 0 [2024-11-28 03:46:44,057 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_baab3a94-b378-48f0-85dc-9d3ad2a813c3/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2024-11-28 03:46:44,246 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_baab3a94-b378-48f0-85dc-9d3ad2a813c3/bin/uautomizer-verify-aQ6SnzHsRB/cvc4 --incremental --print-success --lang smt,23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_baab3a94-b378-48f0-85dc-9d3ad2a813c3/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:46:44,246 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr77REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 422 more)] === [2024-11-28 03:46:44,246 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:46:44,246 INFO L85 PathProgramCache]: Analyzing trace with hash -476960560, now seen corresponding path program 1 times [2024-11-28 03:46:44,247 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 03:46:44,247 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [662456198] [2024-11-28 03:46:44,247 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:46:44,247 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:46:44,247 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_baab3a94-b378-48f0-85dc-9d3ad2a813c3/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:46:44,249 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_baab3a94-b378-48f0-85dc-9d3ad2a813c3/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:46:44,250 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_baab3a94-b378-48f0-85dc-9d3ad2a813c3/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2024-11-28 03:46:44,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:46:44,777 INFO L256 TraceCheckSpWp]: Trace formula consists of 793 conjuncts, 111 conjuncts are in the unsatisfiable core [2024-11-28 03:46:44,789 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:46:44,915 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2024-11-28 03:46:44,915 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2024-11-28 03:46:44,926 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2024-11-28 03:46:44,955 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2024-11-28 03:46:44,966 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2024-11-28 03:46:45,074 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 10 [2024-11-28 03:46:45,079 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 3 [2024-11-28 03:46:45,908 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-28 03:46:45,908 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 62 treesize of output 57 [2024-11-28 03:46:45,920 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 13 [2024-11-28 03:46:46,030 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-28 03:46:46,031 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 62 treesize of output 57 [2024-11-28 03:46:46,039 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 13 [2024-11-28 03:46:46,073 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 13 [2024-11-28 03:46:46,083 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 3 [2024-11-28 03:46:46,121 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 946 trivial. 0 not checked. [2024-11-28 03:46:46,121 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:46:46,269 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (and (forall ((v_ArrVal_3001 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (select (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_#t~mem35#1.base| v_ArrVal_3001) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (bvule (bvadd .cse0 (_ bv4 32)) (bvadd .cse0 (_ bv8 32))))) (forall ((v_ArrVal_3002 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_3001 (Array (_ BitVec 32) (_ BitVec 32)))) (bvule (bvadd (select (select (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_#t~mem35#1.base| v_ArrVal_3001) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) (_ bv8 32)) (select |c_#length| (select (select (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem35#1.base| v_ArrVal_3002) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))))) is different from false [2024-11-28 03:46:46,295 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (let ((.cse0 (select (select |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (and (forall ((v_ArrVal_3002 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_3001 (Array (_ BitVec 32) (_ BitVec 32)))) (bvule (bvadd (_ bv8 32) (select (select (store |c_#memory_$Pointer$#1.offset| .cse0 v_ArrVal_3001) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)) (select |c_#length| (select (select (store |c_#memory_$Pointer$#1.base| .cse0 v_ArrVal_3002) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))) (forall ((v_ArrVal_3001 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse2 (select (select (store |c_#memory_$Pointer$#1.offset| .cse0 v_ArrVal_3001) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (bvule (bvadd (_ bv4 32) .cse2) (bvadd (_ bv8 32) .cse2))))))) is different from false [2024-11-28 03:46:47,759 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (and (forall ((v_ArrVal_3093 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_3094 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_3001 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (select (store (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_#t~mem33#1.base| v_ArrVal_3094) (select (select (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem33#1.base| v_ArrVal_3093) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_3001) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (bvule (bvadd .cse0 (_ bv4 32)) (bvadd .cse0 (_ bv8 32))))) (forall ((v_ArrVal_3093 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_3094 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_3002 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_3001 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse3 (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem33#1.base| v_ArrVal_3093))) (let ((.cse2 (select (select .cse3 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (bvule (bvadd (select (select (store (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_#t~mem33#1.base| v_ArrVal_3094) .cse2 v_ArrVal_3001) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) (_ bv8 32)) (select |c_#length| (select (select (store .cse3 .cse2 v_ArrVal_3002) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))))))) is different from false [2024-11-28 03:46:47,766 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 03:46:47,766 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [662456198] [2024-11-28 03:46:47,766 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [662456198] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:46:47,766 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [911736431] [2024-11-28 03:46:47,767 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:46:47,767 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-28 03:46:47,767 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_baab3a94-b378-48f0-85dc-9d3ad2a813c3/bin/uautomizer-verify-aQ6SnzHsRB/cvc4 [2024-11-28 03:46:47,769 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_baab3a94-b378-48f0-85dc-9d3ad2a813c3/bin/uautomizer-verify-aQ6SnzHsRB/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-28 03:46:47,770 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_baab3a94-b378-48f0-85dc-9d3ad2a813c3/bin/uautomizer-verify-aQ6SnzHsRB/cvc4 --incremental --print-success --lang smt (26)] Waiting until timeout for monitored process [2024-11-28 03:46:50,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:46:50,736 INFO L256 TraceCheckSpWp]: Trace formula consists of 793 conjuncts, 112 conjuncts are in the unsatisfiable core [2024-11-28 03:46:50,751 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:46:50,755 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2024-11-28 03:46:50,973 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2024-11-28 03:46:50,973 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2024-11-28 03:46:50,982 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2024-11-28 03:46:51,001 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2024-11-28 03:46:51,012 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2024-11-28 03:46:51,097 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 10 [2024-11-28 03:46:51,104 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 3 [2024-11-28 03:46:51,880 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-28 03:46:51,881 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 62 treesize of output 57 [2024-11-28 03:46:51,891 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 13 [2024-11-28 03:46:51,977 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-28 03:46:51,977 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 62 treesize of output 57 [2024-11-28 03:46:51,987 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 13 [2024-11-28 03:46:52,014 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 13 [2024-11-28 03:46:52,022 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 3 [2024-11-28 03:46:52,027 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 946 trivial. 0 not checked. [2024-11-28 03:46:52,027 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:46:52,095 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (and (forall ((v_ArrVal_3546 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (select (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_#t~mem35#1.base| v_ArrVal_3546) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (bvule (bvadd (_ bv4 32) .cse0) (bvadd (_ bv8 32) .cse0)))) (forall ((v_ArrVal_3547 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_3546 (Array (_ BitVec 32) (_ BitVec 32)))) (bvule (bvadd (_ bv8 32) (select (select (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_#t~mem35#1.base| v_ArrVal_3546) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)) (select |c_#length| (select (select (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem35#1.base| v_ArrVal_3547) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))))) is different from false [2024-11-28 03:46:52,124 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$#1.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (and (forall ((v_ArrVal_3546 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (select (store |c_#memory_$Pointer$#1.offset| .cse1 v_ArrVal_3546) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (bvule (bvadd .cse0 (_ bv4 32)) (bvadd .cse0 (_ bv8 32))))) (forall ((v_ArrVal_3547 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_3546 (Array (_ BitVec 32) (_ BitVec 32)))) (bvule (bvadd (select (select (store |c_#memory_$Pointer$#1.offset| .cse1 v_ArrVal_3546) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2) (_ bv8 32)) (select |c_#length| (select (select (store |c_#memory_$Pointer$#1.base| .cse1 v_ArrVal_3547) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))))))) is different from false [2024-11-28 03:46:53,621 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (and (forall ((v_ArrVal_3639 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_3638 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_3546 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (select (store (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_#t~mem33#1.base| v_ArrVal_3639) (select (select (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem33#1.base| v_ArrVal_3638) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_3546) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (bvule (bvadd (_ bv4 32) .cse0) (bvadd (_ bv8 32) .cse0)))) (forall ((v_ArrVal_3639 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_3638 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_3547 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_3546 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse3 (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem33#1.base| v_ArrVal_3638))) (let ((.cse2 (select (select .cse3 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (bvule (bvadd (_ bv8 32) (select (select (store (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_#t~mem33#1.base| v_ArrVal_3639) .cse2 v_ArrVal_3546) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)) (select |c_#length| (select (select (store .cse3 .cse2 v_ArrVal_3547) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))))))) is different from false [2024-11-28 03:46:53,628 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [911736431] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:46:53,628 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-28 03:46:53,628 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9] total 10 [2024-11-28 03:46:53,628 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [820915163] [2024-11-28 03:46:53,629 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-28 03:46:53,629 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-28 03:46:53,629 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 03:46:53,629 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-28 03:46:53,629 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=132, Unknown=6, NotChecked=162, Total=342 [2024-11-28 03:46:53,630 INFO L87 Difference]: Start difference. First operand 823 states and 885 transitions. Second operand has 11 states, 9 states have (on average 11.555555555555555) internal successors, (104), 11 states have internal predecessors, (104), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-28 03:47:00,754 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:47:00,754 INFO L93 Difference]: Finished difference Result 822 states and 884 transitions. [2024-11-28 03:47:00,755 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-28 03:47:00,755 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 9 states have (on average 11.555555555555555) internal successors, (104), 11 states have internal predecessors, (104), 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 [2024-11-28 03:47:00,755 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:47:00,758 INFO L225 Difference]: With dead ends: 822 [2024-11-28 03:47:00,758 INFO L226 Difference]: Without dead ends: 822 [2024-11-28 03:47:00,759 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 256 GetRequests, 230 SyntacticMatches, 3 SemanticMatches, 23 ConstructedPredicates, 6 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=77, Invalid=283, Unknown=6, NotChecked=234, Total=600 [2024-11-28 03:47:00,759 INFO L435 NwaCegarLoop]: 462 mSDtfsCounter, 424 mSDsluCounter, 1861 mSDsCounter, 0 mSdLazyCounter, 2706 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 426 SdHoareTripleChecker+Valid, 2323 SdHoareTripleChecker+Invalid, 2713 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 2706 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.9s IncrementalHoareTripleChecker+Time [2024-11-28 03:47:00,760 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [426 Valid, 2323 Invalid, 2713 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 2706 Invalid, 0 Unknown, 0 Unchecked, 6.9s Time] [2024-11-28 03:47:00,761 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 822 states. [2024-11-28 03:47:00,772 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 822 to 822. [2024-11-28 03:47:00,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 822 states, 548 states have (on average 1.6003649635036497) internal successors, (877), 816 states have internal predecessors, (877), 3 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2024-11-28 03:47:00,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 822 states to 822 states and 884 transitions. [2024-11-28 03:47:00,775 INFO L78 Accepts]: Start accepts. Automaton has 822 states and 884 transitions. Word has length 119 [2024-11-28 03:47:00,778 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:47:00,778 INFO L471 AbstractCegarLoop]: Abstraction has 822 states and 884 transitions. [2024-11-28 03:47:00,778 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 9 states have (on average 11.555555555555555) internal successors, (104), 11 states have internal predecessors, (104), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-28 03:47:00,778 INFO L276 IsEmpty]: Start isEmpty. Operand 822 states and 884 transitions. [2024-11-28 03:47:00,779 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2024-11-28 03:47:00,780 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:47:00,780 INFO L218 NwaCegarLoop]: trace histogram [44, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:47:00,800 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_baab3a94-b378-48f0-85dc-9d3ad2a813c3/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Ended with exit code 0 [2024-11-28 03:47:00,990 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_baab3a94-b378-48f0-85dc-9d3ad2a813c3/bin/uautomizer-verify-aQ6SnzHsRB/cvc4 --incremental --print-success --lang smt (26)] Ended with exit code 0 [2024-11-28 03:47:01,180 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_baab3a94-b378-48f0-85dc-9d3ad2a813c3/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_baab3a94-b378-48f0-85dc-9d3ad2a813c3/bin/uautomizer-verify-aQ6SnzHsRB/cvc4 --incremental --print-success --lang smt [2024-11-28 03:47:01,181 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr80REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 422 more)] === [2024-11-28 03:47:01,181 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:47:01,182 INFO L85 PathProgramCache]: Analyzing trace with hash -1379954683, now seen corresponding path program 1 times [2024-11-28 03:47:01,182 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 03:47:01,182 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1999637549] [2024-11-28 03:47:01,182 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:47:01,183 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:47:01,183 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_baab3a94-b378-48f0-85dc-9d3ad2a813c3/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:47:01,184 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_baab3a94-b378-48f0-85dc-9d3ad2a813c3/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:47:01,185 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_baab3a94-b378-48f0-85dc-9d3ad2a813c3/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2024-11-28 03:47:01,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:47:01,813 INFO L256 TraceCheckSpWp]: Trace formula consists of 822 conjuncts, 61 conjuncts are in the unsatisfiable core [2024-11-28 03:47:01,822 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:47:01,935 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2024-11-28 03:47:01,935 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2024-11-28 03:47:01,953 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2024-11-28 03:47:02,558 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-28 03:47:02,558 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 44 treesize of output 43 [2024-11-28 03:47:02,662 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-28 03:47:02,662 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 44 treesize of output 43 [2024-11-28 03:47:02,741 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-28 03:47:02,741 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 44 treesize of output 43 [2024-11-28 03:47:02,756 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 15 [2024-11-28 03:47:02,779 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 946 trivial. 0 not checked. [2024-11-28 03:47:02,779 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:47:02,870 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_4060 (Array (_ BitVec 32) (_ BitVec 32)))) (= (bvadd (_ bv1 1) (select |c_#valid| (let ((.cse0 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (store |c_#memory_$Pointer$#1.base| (select (select |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse0) v_ArrVal_4060) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0)))) (_ bv0 1))) is different from false [2024-11-28 03:47:02,884 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_4060 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_4059 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (_ bv1 1) (select |c_#valid| (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (let ((.cse0 (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem35#1.base| v_ArrVal_4059))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_4060)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))))) is different from false [2024-11-28 03:47:02,893 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_4060 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_4059 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (_ bv1 1) (select |c_#valid| (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (let ((.cse0 (store |c_#memory_$Pointer$#1.base| (select (select |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_4059))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_4060)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))))) is different from false [2024-11-28 03:47:03,384 INFO L349 Elim1Store]: treesize reduction 7, result has 87.3 percent of original size [2024-11-28 03:47:03,385 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 61 treesize of output 60 [2024-11-28 03:47:03,397 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_4060 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_4106 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_4059 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_ULTIMATE.start_main_#t~mem33#1.base| (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (let ((.cse0 (let ((.cse2 (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem33#1.base| v_ArrVal_4106))) (store .cse2 (select (select .cse2 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_4059)))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_4060)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))) is different from false [2024-11-28 03:47:03,400 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 03:47:03,400 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1999637549] [2024-11-28 03:47:03,400 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1999637549] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:47:03,400 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [36126652] [2024-11-28 03:47:03,400 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:47:03,400 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-28 03:47:03,400 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_baab3a94-b378-48f0-85dc-9d3ad2a813c3/bin/uautomizer-verify-aQ6SnzHsRB/cvc4 [2024-11-28 03:47:03,402 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_baab3a94-b378-48f0-85dc-9d3ad2a813c3/bin/uautomizer-verify-aQ6SnzHsRB/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-28 03:47:03,404 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_baab3a94-b378-48f0-85dc-9d3ad2a813c3/bin/uautomizer-verify-aQ6SnzHsRB/cvc4 --incremental --print-success --lang smt (28)] Waiting until timeout for monitored process [2024-11-28 03:47:14,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:47:14,660 INFO L256 TraceCheckSpWp]: Trace formula consists of 822 conjuncts, 66 conjuncts are in the unsatisfiable core [2024-11-28 03:47:14,669 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:47:14,729 INFO L349 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2024-11-28 03:47:14,729 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 [2024-11-28 03:47:15,137 INFO L349 Elim1Store]: treesize reduction 54, result has 29.9 percent of original size [2024-11-28 03:47:15,137 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 [2024-11-28 03:47:15,227 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 [2024-11-28 03:47:15,478 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 [2024-11-28 03:47:16,948 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-28 03:47:16,949 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 [2024-11-28 03:47:17,206 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-28 03:47:17,206 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 [2024-11-28 03:47:17,410 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-28 03:47:17,410 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 [2024-11-28 03:47:17,462 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 [2024-11-28 03:47:17,555 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 946 trivial. 0 not checked. [2024-11-28 03:47:17,555 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:47:17,663 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_4060 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_4529 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (_ bv1 1) (select |c_#valid| (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (let ((.cse0 (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem35#1.base| v_ArrVal_4529))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_4060)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))))) is different from false [2024-11-28 03:47:17,676 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_4060 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_4529 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (_ bv1 1) (select |c_#valid| (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (let ((.cse0 (store |c_#memory_$Pointer$#1.base| (select (select |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_4529))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_4060)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))))) is different from false [2024-11-28 03:47:18,170 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_4060 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_4529 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_4576 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (_ bv1 1) (select |c_#valid| (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (let ((.cse0 (let ((.cse2 (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem33#1.base| v_ArrVal_4576))) (store .cse2 (select (select .cse2 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_4529)))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_4060)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))))) is different from false [2024-11-28 03:47:18,174 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [36126652] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:47:18,174 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-28 03:47:18,174 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 10] total 23 [2024-11-28 03:47:18,174 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [46378572] [2024-11-28 03:47:18,174 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-28 03:47:18,175 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2024-11-28 03:47:18,175 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 03:47:18,175 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2024-11-28 03:47:18,176 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=118, Invalid=546, Unknown=14, NotChecked=378, Total=1056 [2024-11-28 03:47:18,176 INFO L87 Difference]: Start difference. First operand 822 states and 884 transitions. Second operand has 24 states, 21 states have (on average 7.428571428571429) internal successors, (156), 23 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) [2024-11-28 03:47:31,703 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:47:31,703 INFO L93 Difference]: Finished difference Result 1496 states and 1610 transitions. [2024-11-28 03:47:31,704 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2024-11-28 03:47:31,704 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 21 states have (on average 7.428571428571429) internal successors, (156), 23 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 [2024-11-28 03:47:31,704 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:47:31,710 INFO L225 Difference]: With dead ends: 1496 [2024-11-28 03:47:31,710 INFO L226 Difference]: Without dead ends: 1496 [2024-11-28 03:47:31,711 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 278 GetRequests, 229 SyntacticMatches, 2 SemanticMatches, 47 ConstructedPredicates, 7 IntricatePredicates, 0 DeprecatedPredicates, 434 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=250, Invalid=1482, Unknown=18, NotChecked=602, Total=2352 [2024-11-28 03:47:31,713 INFO L435 NwaCegarLoop]: 367 mSDtfsCounter, 1348 mSDsluCounter, 5127 mSDsCounter, 0 mSdLazyCounter, 5568 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1354 SdHoareTripleChecker+Valid, 5494 SdHoareTripleChecker+Invalid, 5593 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 5568 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.8s IncrementalHoareTripleChecker+Time [2024-11-28 03:47:31,713 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1354 Valid, 5494 Invalid, 5593 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [25 Valid, 5568 Invalid, 0 Unknown, 0 Unchecked, 12.8s Time] [2024-11-28 03:47:31,715 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1496 states. [2024-11-28 03:47:31,726 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1496 to 821. [2024-11-28 03:47:31,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 821 states, 548 states have (on average 1.5985401459854014) internal successors, (876), 815 states have internal predecessors, (876), 3 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2024-11-28 03:47:31,730 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 821 states to 821 states and 883 transitions. [2024-11-28 03:47:31,730 INFO L78 Accepts]: Start accepts. Automaton has 821 states and 883 transitions. Word has length 122 [2024-11-28 03:47:31,730 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:47:31,731 INFO L471 AbstractCegarLoop]: Abstraction has 821 states and 883 transitions. [2024-11-28 03:47:31,731 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 21 states have (on average 7.428571428571429) internal successors, (156), 23 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) [2024-11-28 03:47:31,731 INFO L276 IsEmpty]: Start isEmpty. Operand 821 states and 883 transitions. [2024-11-28 03:47:31,732 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2024-11-28 03:47:31,733 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:47:31,733 INFO L218 NwaCegarLoop]: trace histogram [44, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:47:31,763 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_baab3a94-b378-48f0-85dc-9d3ad2a813c3/bin/uautomizer-verify-aQ6SnzHsRB/cvc4 --incremental --print-success --lang smt (28)] Ended with exit code 0 [2024-11-28 03:47:31,949 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_baab3a94-b378-48f0-85dc-9d3ad2a813c3/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Ended with exit code 0 [2024-11-28 03:47:32,133 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_baab3a94-b378-48f0-85dc-9d3ad2a813c3/bin/uautomizer-verify-aQ6SnzHsRB/cvc4 --incremental --print-success --lang smt,27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_baab3a94-b378-48f0-85dc-9d3ad2a813c3/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:47:32,134 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr81REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 422 more)] === [2024-11-28 03:47:32,134 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:47:32,135 INFO L85 PathProgramCache]: Analyzing trace with hash -1379954682, now seen corresponding path program 1 times [2024-11-28 03:47:32,135 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 03:47:32,135 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [699731363] [2024-11-28 03:47:32,135 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:47:32,135 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:47:32,135 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_baab3a94-b378-48f0-85dc-9d3ad2a813c3/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:47:32,137 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_baab3a94-b378-48f0-85dc-9d3ad2a813c3/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:47:32,141 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_baab3a94-b378-48f0-85dc-9d3ad2a813c3/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2024-11-28 03:47:32,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:47:32,897 INFO L256 TraceCheckSpWp]: Trace formula consists of 822 conjuncts, 114 conjuncts are in the unsatisfiable core [2024-11-28 03:47:32,911 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:47:33,091 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2024-11-28 03:47:33,107 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2024-11-28 03:47:33,107 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2024-11-28 03:47:33,142 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2024-11-28 03:47:33,157 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2024-11-28 03:47:33,291 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 10 [2024-11-28 03:47:33,298 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 3 [2024-11-28 03:47:34,212 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-28 03:47:34,212 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 62 treesize of output 57 [2024-11-28 03:47:34,222 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 13 [2024-11-28 03:47:34,355 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-28 03:47:34,355 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 62 treesize of output 57 [2024-11-28 03:47:34,365 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 13 [2024-11-28 03:47:34,482 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-28 03:47:34,483 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 62 treesize of output 57 [2024-11-28 03:47:34,493 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 13 [2024-11-28 03:47:34,525 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 13 [2024-11-28 03:47:34,533 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 3 [2024-11-28 03:47:34,567 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 946 trivial. 0 not checked. [2024-11-28 03:47:34,567 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:47:34,738 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (and (forall ((v_ArrVal_5044 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (select (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_#t~mem36#1.base| v_ArrVal_5044) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (bvule (bvadd (_ bv8 32) .cse0) (bvadd (_ bv12 32) .cse0)))) (forall ((v_ArrVal_5044 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_5045 (Array (_ BitVec 32) (_ BitVec 32)))) (bvule (bvadd (_ bv12 32) (select (select (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_#t~mem36#1.base| v_ArrVal_5044) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)) (select |c_#length| (select (select (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem36#1.base| v_ArrVal_5045) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))))) is different from false [2024-11-28 03:47:34,768 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$#1.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (and (forall ((v_ArrVal_5044 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (select (store |c_#memory_$Pointer$#1.offset| .cse1 v_ArrVal_5044) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (bvule (bvadd .cse0 (_ bv8 32)) (bvadd .cse0 (_ bv12 32))))) (forall ((v_ArrVal_5044 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_5045 (Array (_ BitVec 32) (_ BitVec 32)))) (bvule (bvadd (select (select (store |c_#memory_$Pointer$#1.offset| .cse1 v_ArrVal_5044) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2) (_ bv12 32)) (select |c_#length| (select (select (store |c_#memory_$Pointer$#1.base| .cse1 v_ArrVal_5045) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))))))) is different from false [2024-11-28 03:47:34,895 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (and (forall ((v_ArrVal_5042 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_5043 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_5044 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_5045 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse2 (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem35#1.base| v_ArrVal_5042))) (let ((.cse0 (select (select .cse2 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (bvule (bvadd (select (select (store (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_#t~mem35#1.base| v_ArrVal_5043) .cse0 v_ArrVal_5044) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) (_ bv12 32)) (select |c_#length| (select (select (store .cse2 .cse0 v_ArrVal_5045) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))))) (forall ((v_ArrVal_5042 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_5043 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_5044 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse3 (select (select (store (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_#t~mem35#1.base| v_ArrVal_5043) (select (select (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem35#1.base| v_ArrVal_5042) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_5044) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (bvule (bvadd .cse3 (_ bv8 32)) (bvadd .cse3 (_ bv12 32))))))) is different from false [2024-11-28 03:47:41,748 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 03:47:41,748 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [699731363] [2024-11-28 03:47:41,749 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [699731363] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:47:41,749 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1848112373] [2024-11-28 03:47:41,749 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:47:41,749 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-28 03:47:41,749 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_baab3a94-b378-48f0-85dc-9d3ad2a813c3/bin/uautomizer-verify-aQ6SnzHsRB/cvc4 [2024-11-28 03:47:41,751 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_baab3a94-b378-48f0-85dc-9d3ad2a813c3/bin/uautomizer-verify-aQ6SnzHsRB/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-28 03:47:41,752 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_baab3a94-b378-48f0-85dc-9d3ad2a813c3/bin/uautomizer-verify-aQ6SnzHsRB/cvc4 --incremental --print-success --lang smt (30)] Waiting until timeout for monitored process [2024-11-28 03:47:54,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:47:54,309 INFO L256 TraceCheckSpWp]: Trace formula consists of 822 conjuncts, 117 conjuncts are in the unsatisfiable core [2024-11-28 03:47:54,322 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:47:54,344 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2024-11-28 03:47:55,546 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2024-11-28 03:47:55,546 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2024-11-28 03:47:55,589 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2024-11-28 03:47:55,655 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2024-11-28 03:47:55,676 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2024-11-28 03:47:56,027 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 10 [2024-11-28 03:47:56,048 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 3 [2024-11-28 03:48:00,658 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-28 03:48:00,658 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 62 treesize of output 57 [2024-11-28 03:48:00,747 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 13 [2024-11-28 03:48:01,141 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-28 03:48:01,141 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 62 treesize of output 57 [2024-11-28 03:48:01,184 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 13 [2024-11-28 03:48:01,509 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-28 03:48:01,509 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 62 treesize of output 57 [2024-11-28 03:48:01,555 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 13 [2024-11-28 03:48:01,711 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 13 [2024-11-28 03:48:01,757 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 3 [2024-11-28 03:48:01,759 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 946 trivial. 0 not checked. [2024-11-28 03:48:01,759 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:48:02,033 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse0 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (and (forall ((v_ArrVal_5607 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_5608 (Array (_ BitVec 32) (_ BitVec 32)))) (bvule (bvadd (_ bv12 32) (select (select (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_#t~mem36#1.base| v_ArrVal_5607) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0)) (select |c_#length| (select (select (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem36#1.base| v_ArrVal_5608) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0)))) (forall ((v_ArrVal_5607 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse1 (select (select (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_#t~mem36#1.base| v_ArrVal_5607) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0))) (bvule (bvadd (_ bv8 32) .cse1) (bvadd (_ bv12 32) .cse1)))))) is different from false [2024-11-28 03:48:02,124 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$#1.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (and (forall ((v_ArrVal_5607 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (select (store |c_#memory_$Pointer$#1.offset| .cse1 v_ArrVal_5607) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (bvule (bvadd .cse0 (_ bv8 32)) (bvadd .cse0 (_ bv12 32))))) (forall ((v_ArrVal_5607 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_5608 (Array (_ BitVec 32) (_ BitVec 32)))) (bvule (bvadd (select (select (store |c_#memory_$Pointer$#1.offset| .cse1 v_ArrVal_5607) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2) (_ bv12 32)) (select |c_#length| (select (select (store |c_#memory_$Pointer$#1.base| .cse1 v_ArrVal_5608) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))))))) is different from false [2024-11-28 03:48:02,291 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (and (forall ((v_ArrVal_5605 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_5606 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_5607 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (select (store (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_#t~mem35#1.base| v_ArrVal_5605) (select (select (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem35#1.base| v_ArrVal_5606) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_5607) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (bvule (bvadd (_ bv8 32) .cse0) (bvadd (_ bv12 32) .cse0)))) (forall ((v_ArrVal_5605 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_5606 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_5607 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_5608 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse3 (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem35#1.base| v_ArrVal_5606))) (let ((.cse2 (select (select .cse3 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (bvule (bvadd (_ bv12 32) (select (select (store (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_#t~mem35#1.base| v_ArrVal_5605) .cse2 v_ArrVal_5607) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)) (select |c_#length| (select (select (store .cse3 .cse2 v_ArrVal_5608) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))))))) is different from false [2024-11-28 03:48:14,489 WARN L286 SmtUtils]: Spent 6.12s 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) [2024-11-28 03:48:15,493 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse2 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (and (forall ((v_ArrVal_5605 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_5606 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_5607 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_5608 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_5700 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_5699 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse4 (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem33#1.base| v_ArrVal_5700))) (let ((.cse0 (select (select .cse4 |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (let ((.cse3 (store .cse4 .cse0 v_ArrVal_5606))) (let ((.cse1 (select (select .cse3 |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (bvule (bvadd (_ bv12 32) (select (select (store (store (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_#t~mem33#1.base| v_ArrVal_5699) .cse0 v_ArrVal_5605) .cse1 v_ArrVal_5607) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2)) (select |c_#length| (select (select (store .cse3 .cse1 v_ArrVal_5608) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2)))))))) (forall ((v_ArrVal_5605 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_5606 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_5607 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_5700 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_5699 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse5 (select (select (let ((.cse7 (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem33#1.base| v_ArrVal_5700))) (let ((.cse6 (select (select .cse7 |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (store (store (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_#t~mem33#1.base| v_ArrVal_5699) .cse6 v_ArrVal_5605) (select (select (store .cse7 .cse6 v_ArrVal_5606) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2) v_ArrVal_5607))) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (bvule (bvadd (_ bv8 32) .cse5) (bvadd (_ bv12 32) .cse5)))))) is different from false [2024-11-28 03:48:15,539 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1848112373] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:48:15,539 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-28 03:48:15,539 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10] total 11 [2024-11-28 03:48:15,539 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1037976687] [2024-11-28 03:48:15,540 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-28 03:48:15,540 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-28 03:48:15,540 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 03:48:15,540 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-28 03:48:15,540 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=207, Unknown=30, NotChecked=252, Total=552 [2024-11-28 03:48:15,541 INFO L87 Difference]: Start difference. First operand 821 states and 883 transitions. Second operand has 12 states, 10 states have (on average 10.7) internal successors, (107), 12 states have internal predecessors, (107), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-28 03:49:49,317 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:49:49,317 INFO L93 Difference]: Finished difference Result 820 states and 882 transitions. [2024-11-28 03:49:49,318 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-28 03:49:49,318 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 10 states have (on average 10.7) internal successors, (107), 12 states have internal predecessors, (107), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 122 [2024-11-28 03:49:49,319 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:49:49,321 INFO L225 Difference]: With dead ends: 820 [2024-11-28 03:49:49,321 INFO L226 Difference]: Without dead ends: 820 [2024-11-28 03:49:49,321 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 269 GetRequests, 237 SyntacticMatches, 3 SemanticMatches, 29 ConstructedPredicates, 7 IntricatePredicates, 0 DeprecatedPredicates, 77 ImplicationChecksByTransitivity, 16.6s TimeCoverageRelationStatistics Valid=116, Invalid=431, Unknown=33, NotChecked=350, Total=930 [2024-11-28 03:49:49,322 INFO L435 NwaCegarLoop]: 461 mSDtfsCounter, 422 mSDsluCounter, 2401 mSDsCounter, 0 mSdLazyCounter, 3528 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 88.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 424 SdHoareTripleChecker+Valid, 2862 SdHoareTripleChecker+Invalid, 3535 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 3528 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 89.4s IncrementalHoareTripleChecker+Time [2024-11-28 03:49:49,322 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [424 Valid, 2862 Invalid, 3535 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 3528 Invalid, 0 Unknown, 0 Unchecked, 89.4s Time] [2024-11-28 03:49:49,323 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 820 states. [2024-11-28 03:49:49,329 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 820 to 820. [2024-11-28 03:49:49,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 820 states, 548 states have (on average 1.5967153284671534) internal successors, (875), 814 states have internal predecessors, (875), 3 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2024-11-28 03:49:49,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 820 states to 820 states and 882 transitions. [2024-11-28 03:49:49,331 INFO L78 Accepts]: Start accepts. Automaton has 820 states and 882 transitions. Word has length 122 [2024-11-28 03:49:49,331 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:49:49,331 INFO L471 AbstractCegarLoop]: Abstraction has 820 states and 882 transitions. [2024-11-28 03:49:49,332 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 10 states have (on average 10.7) internal successors, (107), 12 states have internal predecessors, (107), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-28 03:49:49,332 INFO L276 IsEmpty]: Start isEmpty. Operand 820 states and 882 transitions. [2024-11-28 03:49:49,332 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2024-11-28 03:49:49,333 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:49:49,333 INFO L218 NwaCegarLoop]: trace histogram [44, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:49:49,352 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_baab3a94-b378-48f0-85dc-9d3ad2a813c3/bin/uautomizer-verify-aQ6SnzHsRB/cvc4 --incremental --print-success --lang smt (30)] Ended with exit code 0 [2024-11-28 03:49:49,547 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_baab3a94-b378-48f0-85dc-9d3ad2a813c3/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Forceful destruction successful, exit code 0 [2024-11-28 03:49:49,733 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_baab3a94-b378-48f0-85dc-9d3ad2a813c3/bin/uautomizer-verify-aQ6SnzHsRB/cvc4 --incremental --print-success --lang smt,29 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_baab3a94-b378-48f0-85dc-9d3ad2a813c3/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:49:49,733 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr84REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 422 more)] === [2024-11-28 03:49:49,734 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:49:49,734 INFO L85 PathProgramCache]: Analyzing trace with hash 1197305910, now seen corresponding path program 1 times [2024-11-28 03:49:49,735 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 03:49:49,735 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [593246428] [2024-11-28 03:49:49,735 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:49:49,735 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:49:49,735 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_baab3a94-b378-48f0-85dc-9d3ad2a813c3/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:49:49,737 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_baab3a94-b378-48f0-85dc-9d3ad2a813c3/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:49:49,742 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_baab3a94-b378-48f0-85dc-9d3ad2a813c3/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2024-11-28 03:49:50,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:49:50,573 INFO L256 TraceCheckSpWp]: Trace formula consists of 851 conjuncts, 63 conjuncts are in the unsatisfiable core [2024-11-28 03:49:50,582 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:49:53,160 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2024-11-28 03:49:53,161 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2024-11-28 03:49:53,509 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2024-11-28 03:49:59,371 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-28 03:49:59,371 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 31 treesize of output 32 [2024-11-28 03:50:00,389 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-28 03:50:00,389 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 31 treesize of output 32 [2024-11-28 03:50:01,508 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-28 03:50:01,508 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 31 treesize of output 32 [2024-11-28 03:50:02,608 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-28 03:50:02,609 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 44 treesize of output 43 [2024-11-28 03:50:03,389 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 15 [2024-11-28 03:50:03,853 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 946 trivial. 0 not checked. [2024-11-28 03:50:03,853 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:50:04,731 INFO L349 Elim1Store]: treesize reduction 7, result has 63.2 percent of original size [2024-11-28 03:50:04,731 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 24 [2024-11-28 03:50:04,816 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_6137 (Array (_ BitVec 32) (_ BitVec 32)))) (= (select (select (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem37#1.base| v_ArrVal_6137) |c_ULTIMATE.start_main_~user~0#1.base|) (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|)) |c_ULTIMATE.start_main_#t~mem37#1.base|)) is different from false [2024-11-28 03:50:04,924 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_6137 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (let ((.cse0 (select (select |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (= .cse0 (select (select (store |c_#memory_$Pointer$#1.base| .cse0 v_ArrVal_6137) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))))) is different from false [2024-11-28 03:50:05,085 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_6136 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_6137 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem36#1.base| v_ArrVal_6136)) (.cse2 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (let ((.cse1 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (= (select (select (store .cse0 .cse1 v_ArrVal_6137) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2) .cse1)))) is different from false [2024-11-28 03:50:05,196 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_6136 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_6137 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse2 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (let ((.cse0 (store |c_#memory_$Pointer$#1.base| (select (select |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse2) v_ArrVal_6136))) (let ((.cse1 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (= (select (select (store .cse0 .cse1 v_ArrVal_6137) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2) .cse1))))) is different from false [2024-11-28 03:50:05,355 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_6136 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_6137 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_6135 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse2 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (let ((.cse1 (let ((.cse3 (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem35#1.base| v_ArrVal_6135))) (store .cse3 (select (select .cse3 |c_ULTIMATE.start_main_~user~0#1.base|) .cse2) v_ArrVal_6136)))) (let ((.cse0 (select (select .cse1 |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (= .cse0 (select (select (store .cse1 .cse0 v_ArrVal_6137) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2)))))) is different from false [2024-11-28 03:50:05,466 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_6136 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_6137 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_6135 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse2 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (let ((.cse0 (let ((.cse3 (store |c_#memory_$Pointer$#1.base| (select (select |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse2) v_ArrVal_6135))) (store .cse3 (select (select .cse3 |c_ULTIMATE.start_main_~user~0#1.base|) .cse2) v_ArrVal_6136)))) (let ((.cse1 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (= (select (select (store .cse0 .cse1 v_ArrVal_6137) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2) .cse1))))) is different from false [2024-11-28 03:50:08,462 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_6183 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_6136 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_6137 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_6135 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse2 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (let ((.cse0 (let ((.cse3 (let ((.cse4 (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem33#1.base| v_ArrVal_6183))) (store .cse4 (select (select .cse4 |c_ULTIMATE.start_main_~user~0#1.base|) .cse2) v_ArrVal_6135)))) (store .cse3 (select (select .cse3 |c_ULTIMATE.start_main_~user~0#1.base|) .cse2) v_ArrVal_6136)))) (let ((.cse1 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (= (select (select (store .cse0 .cse1 v_ArrVal_6137) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2) .cse1))))) is different from false [2024-11-28 03:50:08,488 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 03:50:08,488 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [593246428] [2024-11-28 03:50:08,488 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [593246428] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:50:08,488 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1293914136] [2024-11-28 03:50:08,488 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:50:08,489 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-28 03:50:08,489 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_baab3a94-b378-48f0-85dc-9d3ad2a813c3/bin/uautomizer-verify-aQ6SnzHsRB/cvc4 [2024-11-28 03:50:08,490 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_baab3a94-b378-48f0-85dc-9d3ad2a813c3/bin/uautomizer-verify-aQ6SnzHsRB/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-28 03:50:08,492 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_baab3a94-b378-48f0-85dc-9d3ad2a813c3/bin/uautomizer-verify-aQ6SnzHsRB/cvc4 --incremental --print-success --lang smt (32)] Waiting until timeout for monitored process [2024-11-28 03:50:23,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:50:23,299 INFO L256 TraceCheckSpWp]: Trace formula consists of 851 conjuncts, 68 conjuncts are in the unsatisfiable core [2024-11-28 03:50:23,308 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:50:24,215 INFO L349 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2024-11-28 03:50:24,215 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 [2024-11-28 03:50:30,995 INFO L349 Elim1Store]: treesize reduction 54, result has 29.9 percent of original size [2024-11-28 03:50:30,995 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 [2024-11-28 03:50:32,295 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 [2024-11-28 03:50:35,489 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 [2024-11-28 03:50:53,167 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-28 03:50:53,168 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 [2024-11-28 03:50:55,932 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-28 03:50:55,932 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 [2024-11-28 03:50:57,954 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-28 03:50:57,955 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 54 treesize of output 51 [2024-11-28 03:51:00,038 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-28 03:51:00,038 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 [2024-11-28 03:51:00,560 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 [2024-11-28 03:51:01,602 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 946 trivial. 0 not checked. [2024-11-28 03:51:01,602 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:51:01,819 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_6623 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (_ bv1 1) (select |c_#valid| (select (select (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem37#1.base| v_ArrVal_6623) |c_ULTIMATE.start_main_~user~0#1.base|) (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|)))))) is different from false [2024-11-28 03:51:01,916 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_6623 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (_ bv1 1) (select |c_#valid| (let ((.cse0 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (store |c_#memory_$Pointer$#1.base| (select (select |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse0) v_ArrVal_6623) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0)))))) is different from false [2024-11-28 03:51:02,060 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_6622 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_6623 (Array (_ BitVec 32) (_ BitVec 32)))) (= (bvadd (_ bv1 1) (select |c_#valid| (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (let ((.cse0 (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem36#1.base| v_ArrVal_6622))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_6623)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))) (_ bv0 1))) is different from false [2024-11-28 03:51:02,159 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_6622 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_6623 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (_ bv1 1) (select |c_#valid| (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (let ((.cse0 (store |c_#memory_$Pointer$#1.base| (select (select |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_6622))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_6623)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))))) is different from false [2024-11-28 03:51:02,303 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_6621 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_6622 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_6623 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (_ bv1 1) (select |c_#valid| (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (let ((.cse0 (let ((.cse2 (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem35#1.base| v_ArrVal_6621))) (store .cse2 (select (select .cse2 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_6622)))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_6623)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))))) is different from false [2024-11-28 03:51:02,401 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_6621 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_6622 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_6623 (Array (_ BitVec 32) (_ BitVec 32)))) (= (bvadd (_ bv1 1) (select |c_#valid| (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (let ((.cse0 (let ((.cse2 (store |c_#memory_$Pointer$#1.base| (select (select |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_6621))) (store .cse2 (select (select .cse2 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_6622)))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_6623)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))) (_ bv0 1))) is different from false [2024-11-28 03:51:05,453 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_6669 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_6621 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_6622 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_6623 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (_ bv1 1) (select |c_#valid| (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (let ((.cse0 (let ((.cse2 (let ((.cse3 (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem33#1.base| v_ArrVal_6669))) (store .cse3 (select (select .cse3 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_6621)))) (store .cse2 (select (select .cse2 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_6622)))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_6623)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))))) is different from false [2024-11-28 03:51:05,480 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1293914136] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:51:05,480 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-28 03:51:05,480 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 11] total 24 [2024-11-28 03:51:05,480 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [318022920] [2024-11-28 03:51:05,480 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-28 03:51:05,481 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2024-11-28 03:51:05,481 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 03:51:05,481 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2024-11-28 03:51:05,482 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=136, Invalid=556, Unknown=14, NotChecked=854, Total=1560 [2024-11-28 03:51:05,482 INFO L87 Difference]: Start difference. First operand 820 states and 882 transitions. Second operand has 25 states, 22 states have (on average 7.363636363636363) internal successors, (162), 25 states have internal predecessors, (162), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-28 03:53:06,927 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:53:06,928 INFO L93 Difference]: Finished difference Result 1492 states and 1606 transitions. [2024-11-28 03:53:06,928 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2024-11-28 03:53:06,928 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 22 states have (on average 7.363636363636363) internal successors, (162), 25 states have internal predecessors, (162), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 125 [2024-11-28 03:53:06,929 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:53:06,933 INFO L225 Difference]: With dead ends: 1492 [2024-11-28 03:53:06,933 INFO L226 Difference]: Without dead ends: 1492 [2024-11-28 03:53:06,933 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 287 GetRequests, 235 SyntacticMatches, 1 SemanticMatches, 51 ConstructedPredicates, 14 IntricatePredicates, 0 DeprecatedPredicates, 350 ImplicationChecksByTransitivity, 21.3s TimeCoverageRelationStatistics Valid=243, Invalid=1281, Unknown=14, NotChecked=1218, Total=2756 [2024-11-28 03:53:06,934 INFO L435 NwaCegarLoop]: 367 mSDtfsCounter, 1030 mSDsluCounter, 4250 mSDsCounter, 0 mSdLazyCounter, 4693 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 114.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1036 SdHoareTripleChecker+Valid, 4617 SdHoareTripleChecker+Invalid, 4718 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 4693 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 115.6s IncrementalHoareTripleChecker+Time [2024-11-28 03:53:06,934 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1036 Valid, 4617 Invalid, 4718 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [25 Valid, 4693 Invalid, 0 Unknown, 0 Unchecked, 115.6s Time] [2024-11-28 03:53:06,937 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1492 states. [2024-11-28 03:53:06,951 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1492 to 819. [2024-11-28 03:53:06,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 819 states, 548 states have (on average 1.594890510948905) internal successors, (874), 813 states have internal predecessors, (874), 3 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2024-11-28 03:53:06,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 819 states to 819 states and 881 transitions. [2024-11-28 03:53:06,953 INFO L78 Accepts]: Start accepts. Automaton has 819 states and 881 transitions. Word has length 125 [2024-11-28 03:53:06,953 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:53:06,953 INFO L471 AbstractCegarLoop]: Abstraction has 819 states and 881 transitions. [2024-11-28 03:53:06,953 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 22 states have (on average 7.363636363636363) internal successors, (162), 25 states have internal predecessors, (162), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-28 03:53:06,953 INFO L276 IsEmpty]: Start isEmpty. Operand 819 states and 881 transitions. [2024-11-28 03:53:06,954 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2024-11-28 03:53:06,954 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:53:06,954 INFO L218 NwaCegarLoop]: trace histogram [44, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:53:06,972 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_baab3a94-b378-48f0-85dc-9d3ad2a813c3/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Ended with exit code 0 [2024-11-28 03:53:07,178 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_baab3a94-b378-48f0-85dc-9d3ad2a813c3/bin/uautomizer-verify-aQ6SnzHsRB/cvc4 --incremental --print-success --lang smt (32)] Ended with exit code 0 [2024-11-28 03:53:07,355 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_baab3a94-b378-48f0-85dc-9d3ad2a813c3/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,32 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_baab3a94-b378-48f0-85dc-9d3ad2a813c3/bin/uautomizer-verify-aQ6SnzHsRB/cvc4 --incremental --print-success --lang smt [2024-11-28 03:53:07,355 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr85REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 422 more)] === [2024-11-28 03:53:07,356 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:53:07,356 INFO L85 PathProgramCache]: Analyzing trace with hash 1197305911, now seen corresponding path program 1 times [2024-11-28 03:53:07,356 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 03:53:07,356 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1742339684] [2024-11-28 03:53:07,356 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:53:07,356 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:53:07,357 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_baab3a94-b378-48f0-85dc-9d3ad2a813c3/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:53:07,359 INFO L229 MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_baab3a94-b378-48f0-85dc-9d3ad2a813c3/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:53:07,360 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_baab3a94-b378-48f0-85dc-9d3ad2a813c3/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Waiting until timeout for monitored process [2024-11-28 03:53:08,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:53:08,274 INFO L256 TraceCheckSpWp]: Trace formula consists of 851 conjuncts, 117 conjuncts are in the unsatisfiable core [2024-11-28 03:53:08,288 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:53:11,364 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2024-11-28 03:53:11,659 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2024-11-28 03:53:11,660 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2024-11-28 03:53:12,116 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2024-11-28 03:53:12,173 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2024-11-28 03:53:14,082 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 10 [2024-11-28 03:53:14,143 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 3 [2024-11-28 03:53:24,271 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-28 03:53:24,271 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 62 treesize of output 57 [2024-11-28 03:53:24,363 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 13 [2024-11-28 03:53:25,853 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-28 03:53:25,853 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 62 treesize of output 57 [2024-11-28 03:53:25,951 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 13 [2024-11-28 03:53:27,331 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-28 03:53:27,331 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 62 treesize of output 57 [2024-11-28 03:53:27,433 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 13 [2024-11-28 03:53:28,787 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-28 03:53:28,788 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 62 treesize of output 57 [2024-11-28 03:53:28,876 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 13 [2024-11-28 03:53:29,211 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 13 [2024-11-28 03:53:29,328 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 3 [2024-11-28 03:53:29,867 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 946 trivial. 0 not checked. [2024-11-28 03:53:29,867 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:53:31,374 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (and (forall ((v_ArrVal_7154 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (select (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_#t~mem37#1.base| v_ArrVal_7154) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (bvule (bvadd (_ bv20 32) .cse0) (bvadd (_ bv24 32) .cse0)))) (forall ((v_ArrVal_7154 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7155 (Array (_ BitVec 32) (_ BitVec 32)))) (bvule (bvadd (_ bv24 32) (select (select (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_#t~mem37#1.base| v_ArrVal_7154) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)) (select |c_#length| (select (select (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem37#1.base| v_ArrVal_7155) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))))) is different from false [2024-11-28 03:53:31,545 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$#1.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (and (forall ((v_ArrVal_7154 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7155 (Array (_ BitVec 32) (_ BitVec 32)))) (bvule (bvadd (_ bv24 32) (select (select (store |c_#memory_$Pointer$#1.offset| .cse0 v_ArrVal_7154) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)) (select |c_#length| (select (select (store |c_#memory_$Pointer$#1.base| .cse0 v_ArrVal_7155) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))) (forall ((v_ArrVal_7154 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse2 (select (select (store |c_#memory_$Pointer$#1.offset| .cse0 v_ArrVal_7154) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (bvule (bvadd (_ bv20 32) .cse2) (bvadd (_ bv24 32) .cse2))))))) is different from false [2024-11-28 03:53:31,945 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (and (forall ((v_ArrVal_7152 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7153 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7154 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (select (store (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_#t~mem36#1.base| v_ArrVal_7153) (select (select (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem36#1.base| v_ArrVal_7152) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_7154) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (bvule (bvadd (_ bv20 32) .cse0) (bvadd (_ bv24 32) .cse0)))) (forall ((v_ArrVal_7152 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7153 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7154 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7155 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse3 (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem36#1.base| v_ArrVal_7152))) (let ((.cse2 (select (select .cse3 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (bvule (bvadd (_ bv24 32) (select (select (store (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_#t~mem36#1.base| v_ArrVal_7153) .cse2 v_ArrVal_7154) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)) (select |c_#length| (select (select (store .cse3 .cse2 v_ArrVal_7155) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))))))) is different from false [2024-11-28 03:53:37,100 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse4 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (let ((.cse1 (select (select |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse4))) (and (forall ((v_ArrVal_7151 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7152 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7153 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7154 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7150 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (select (let ((.cse3 (store |c_#memory_$Pointer$#1.base| .cse1 v_ArrVal_7151))) (let ((.cse2 (select (select .cse3 |c_ULTIMATE.start_main_~user~0#1.base|) .cse4))) (store (store (store |c_#memory_$Pointer$#1.offset| .cse1 v_ArrVal_7150) .cse2 v_ArrVal_7153) (select (select (store .cse3 .cse2 v_ArrVal_7152) |c_ULTIMATE.start_main_~user~0#1.base|) .cse4) v_ArrVal_7154))) |c_ULTIMATE.start_main_~user~0#1.base|) .cse4))) (bvule (bvadd .cse0 (_ bv20 32)) (bvadd .cse0 (_ bv24 32))))) (forall ((v_ArrVal_7151 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7152 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7153 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7154 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7150 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7155 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse8 (store |c_#memory_$Pointer$#1.base| .cse1 v_ArrVal_7151))) (let ((.cse5 (select (select .cse8 |c_ULTIMATE.start_main_~user~0#1.base|) .cse4))) (let ((.cse7 (store .cse8 .cse5 v_ArrVal_7152))) (let ((.cse6 (select (select .cse7 |c_ULTIMATE.start_main_~user~0#1.base|) .cse4))) (bvule (bvadd (select (select (store (store (store |c_#memory_$Pointer$#1.offset| .cse1 v_ArrVal_7150) .cse5 v_ArrVal_7153) .cse6 v_ArrVal_7154) |c_ULTIMATE.start_main_~user~0#1.base|) .cse4) (_ bv24 32)) (select |c_#length| (select (select (store .cse7 .cse6 v_ArrVal_7155) |c_ULTIMATE.start_main_~user~0#1.base|) .cse4))))))))))) is different from false [2024-11-28 03:53:42,737 WARN L286 SmtUtils]: Spent 5.47s 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) [2024-11-28 03:53:44,537 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse3 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (and (forall ((v_ArrVal_7151 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7152 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7153 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7154 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7150 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7247 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7155 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7246 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse6 (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem33#1.base| v_ArrVal_7247))) (let ((.cse0 (select (select .cse6 |c_ULTIMATE.start_main_~user~0#1.base|) .cse3))) (let ((.cse5 (store .cse6 .cse0 v_ArrVal_7151))) (let ((.cse1 (select (select .cse5 |c_ULTIMATE.start_main_~user~0#1.base|) .cse3))) (let ((.cse4 (store .cse5 .cse1 v_ArrVal_7152))) (let ((.cse2 (select (select .cse4 |c_ULTIMATE.start_main_~user~0#1.base|) .cse3))) (bvule (bvadd (_ bv24 32) (select (select (store (store (store (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_#t~mem33#1.base| v_ArrVal_7246) .cse0 v_ArrVal_7150) .cse1 v_ArrVal_7153) .cse2 v_ArrVal_7154) |c_ULTIMATE.start_main_~user~0#1.base|) .cse3)) (select |c_#length| (select (select (store .cse4 .cse2 v_ArrVal_7155) |c_ULTIMATE.start_main_~user~0#1.base|) .cse3)))))))))) (forall ((v_ArrVal_7151 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7152 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7153 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7154 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7150 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7247 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7246 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse7 (select (select (let ((.cse11 (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem33#1.base| v_ArrVal_7247))) (let ((.cse8 (select (select .cse11 |c_ULTIMATE.start_main_~user~0#1.base|) .cse3))) (let ((.cse10 (store .cse11 .cse8 v_ArrVal_7151))) (let ((.cse9 (select (select .cse10 |c_ULTIMATE.start_main_~user~0#1.base|) .cse3))) (store (store (store (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_#t~mem33#1.base| v_ArrVal_7246) .cse8 v_ArrVal_7150) .cse9 v_ArrVal_7153) (select (select (store .cse10 .cse9 v_ArrVal_7152) |c_ULTIMATE.start_main_~user~0#1.base|) .cse3) v_ArrVal_7154))))) |c_ULTIMATE.start_main_~user~0#1.base|) .cse3))) (bvule (bvadd (_ bv20 32) .cse7) (bvadd (_ bv24 32) .cse7)))))) is different from false [2024-11-28 03:53:44,579 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 03:53:44,579 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1742339684] [2024-11-28 03:53:44,580 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1742339684] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:53:44,580 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1170713295] [2024-11-28 03:53:44,580 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:53:44,580 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-28 03:53:44,580 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_baab3a94-b378-48f0-85dc-9d3ad2a813c3/bin/uautomizer-verify-aQ6SnzHsRB/cvc4 [2024-11-28 03:53:44,582 INFO L229 MonitoredProcess]: Starting monitored process 34 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_baab3a94-b378-48f0-85dc-9d3ad2a813c3/bin/uautomizer-verify-aQ6SnzHsRB/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-28 03:53:44,584 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_baab3a94-b378-48f0-85dc-9d3ad2a813c3/bin/uautomizer-verify-aQ6SnzHsRB/cvc4 --incremental --print-success --lang smt (34)] Waiting until timeout for monitored process [2024-11-28 03:53:59,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:53:59,838 INFO L256 TraceCheckSpWp]: Trace formula consists of 851 conjuncts, 119 conjuncts are in the unsatisfiable core [2024-11-28 03:53:59,852 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:53:59,895 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2024-11-28 03:54:02,512 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2024-11-28 03:54:02,787 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2024-11-28 03:54:02,788 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2024-11-28 03:54:02,920 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2024-11-28 03:54:03,008 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2024-11-28 03:54:03,707 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 10 [2024-11-28 03:54:03,752 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 3 [2024-11-28 03:54:13,247 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-28 03:54:13,247 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 62 treesize of output 57 [2024-11-28 03:54:13,350 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 13 [2024-11-28 03:54:14,409 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-28 03:54:14,410 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 62 treesize of output 57 [2024-11-28 03:54:14,511 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 13 [2024-11-28 03:54:15,286 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-28 03:54:15,286 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 62 treesize of output 57 [2024-11-28 03:54:15,391 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 13 [2024-11-28 03:54:16,127 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-28 03:54:16,127 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 62 treesize of output 57 [2024-11-28 03:54:16,224 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 13 [2024-11-28 03:54:16,564 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 13 [2024-11-28 03:54:16,659 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 3 [2024-11-28 03:54:16,661 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 946 trivial. 0 not checked. [2024-11-28 03:54:16,661 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:54:18,421 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$#1.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (and (forall ((v_ArrVal_7735 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7734 (Array (_ BitVec 32) (_ BitVec 32)))) (bvule (bvadd (select (select (store |c_#memory_$Pointer$#1.offset| .cse0 v_ArrVal_7734) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) (_ bv24 32)) (select |c_#length| (select (select (store |c_#memory_$Pointer$#1.base| .cse0 v_ArrVal_7735) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))) (forall ((v_ArrVal_7734 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse2 (select (select (store |c_#memory_$Pointer$#1.offset| .cse0 v_ArrVal_7734) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (bvule (bvadd .cse2 (_ bv20 32)) (bvadd .cse2 (_ bv24 32)))))))) is different from false [2024-11-28 03:54:18,815 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (and (forall ((v_ArrVal_7734 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7733 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7732 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (select (store (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_#t~mem36#1.base| v_ArrVal_7732) (select (select (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem36#1.base| v_ArrVal_7733) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_7734) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (bvule (bvadd .cse0 (_ bv20 32)) (bvadd .cse0 (_ bv24 32))))) (forall ((v_ArrVal_7735 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7734 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7733 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7732 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse3 (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem36#1.base| v_ArrVal_7733))) (let ((.cse2 (select (select .cse3 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (bvule (bvadd (select (select (store (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_#t~mem36#1.base| v_ArrVal_7732) .cse2 v_ArrVal_7734) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) (_ bv24 32)) (select |c_#length| (select (select (store .cse3 .cse2 v_ArrVal_7735) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))))))) is different from false [2024-11-28 03:54:19,021 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$#1.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (and (forall ((v_ArrVal_7735 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7734 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7733 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7732 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse3 (store |c_#memory_$Pointer$#1.base| .cse0 v_ArrVal_7733))) (let ((.cse1 (select (select .cse3 |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (bvule (bvadd (_ bv24 32) (select (select (store (store |c_#memory_$Pointer$#1.offset| .cse0 v_ArrVal_7732) .cse1 v_ArrVal_7734) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2)) (select |c_#length| (select (select (store .cse3 .cse1 v_ArrVal_7735) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2)))))) (forall ((v_ArrVal_7734 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7733 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7732 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse4 (select (select (store (store |c_#memory_$Pointer$#1.offset| .cse0 v_ArrVal_7732) (select (select (store |c_#memory_$Pointer$#1.base| .cse0 v_ArrVal_7733) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2) v_ArrVal_7734) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (bvule (bvadd (_ bv20 32) .cse4) (bvadd (_ bv24 32) .cse4))))))) is different from false [2024-11-28 03:54:19,915 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse3 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (and (forall ((v_ArrVal_7734 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7733 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7732 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7731 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7730 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (select (let ((.cse2 (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem35#1.base| v_ArrVal_7730))) (let ((.cse1 (select (select .cse2 |c_ULTIMATE.start_main_~user~0#1.base|) .cse3))) (store (store (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_#t~mem35#1.base| v_ArrVal_7731) .cse1 v_ArrVal_7732) (select (select (store .cse2 .cse1 v_ArrVal_7733) |c_ULTIMATE.start_main_~user~0#1.base|) .cse3) v_ArrVal_7734))) |c_ULTIMATE.start_main_~user~0#1.base|) .cse3))) (bvule (bvadd (_ bv20 32) .cse0) (bvadd (_ bv24 32) .cse0)))) (forall ((v_ArrVal_7735 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7734 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7733 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7732 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7731 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7730 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse7 (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem35#1.base| v_ArrVal_7730))) (let ((.cse4 (select (select .cse7 |c_ULTIMATE.start_main_~user~0#1.base|) .cse3))) (let ((.cse6 (store .cse7 .cse4 v_ArrVal_7733))) (let ((.cse5 (select (select .cse6 |c_ULTIMATE.start_main_~user~0#1.base|) .cse3))) (bvule (bvadd (_ bv24 32) (select (select (store (store (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_#t~mem35#1.base| v_ArrVal_7731) .cse4 v_ArrVal_7732) .cse5 v_ArrVal_7734) |c_ULTIMATE.start_main_~user~0#1.base|) .cse3)) (select |c_#length| (select (select (store .cse6 .cse5 v_ArrVal_7735) |c_ULTIMATE.start_main_~user~0#1.base|) .cse3)))))))))) is different from false [2024-11-28 03:54:20,550 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse3 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (let ((.cse0 (select (select |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse3))) (and (forall ((v_ArrVal_7735 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7734 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7733 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7732 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7731 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7730 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse5 (store |c_#memory_$Pointer$#1.base| .cse0 v_ArrVal_7730))) (let ((.cse1 (select (select .cse5 |c_ULTIMATE.start_main_~user~0#1.base|) .cse3))) (let ((.cse4 (store .cse5 .cse1 v_ArrVal_7733))) (let ((.cse2 (select (select .cse4 |c_ULTIMATE.start_main_~user~0#1.base|) .cse3))) (bvule (bvadd (select (select (store (store (store |c_#memory_$Pointer$#1.offset| .cse0 v_ArrVal_7731) .cse1 v_ArrVal_7732) .cse2 v_ArrVal_7734) |c_ULTIMATE.start_main_~user~0#1.base|) .cse3) (_ bv24 32)) (select |c_#length| (select (select (store .cse4 .cse2 v_ArrVal_7735) |c_ULTIMATE.start_main_~user~0#1.base|) .cse3)))))))) (forall ((v_ArrVal_7734 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7733 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7732 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7731 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7730 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse6 (select (select (let ((.cse8 (store |c_#memory_$Pointer$#1.base| .cse0 v_ArrVal_7730))) (let ((.cse7 (select (select .cse8 |c_ULTIMATE.start_main_~user~0#1.base|) .cse3))) (store (store (store |c_#memory_$Pointer$#1.offset| .cse0 v_ArrVal_7731) .cse7 v_ArrVal_7732) (select (select (store .cse8 .cse7 v_ArrVal_7733) |c_ULTIMATE.start_main_~user~0#1.base|) .cse3) v_ArrVal_7734))) |c_ULTIMATE.start_main_~user~0#1.base|) .cse3))) (bvule (bvadd .cse6 (_ bv20 32)) (bvadd .cse6 (_ bv24 32)))))))) is different from false [2024-11-28 03:54:26,523 WARN L286 SmtUtils]: Spent 5.83s 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) [2024-11-28 03:54:31,990 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse3 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (and (forall ((v_ArrVal_7827 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7826 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7735 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7734 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7733 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7732 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7731 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7730 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse6 (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem33#1.base| v_ArrVal_7826))) (let ((.cse0 (select (select .cse6 |c_ULTIMATE.start_main_~user~0#1.base|) .cse3))) (let ((.cse5 (store .cse6 .cse0 v_ArrVal_7730))) (let ((.cse1 (select (select .cse5 |c_ULTIMATE.start_main_~user~0#1.base|) .cse3))) (let ((.cse4 (store .cse5 .cse1 v_ArrVal_7733))) (let ((.cse2 (select (select .cse4 |c_ULTIMATE.start_main_~user~0#1.base|) .cse3))) (bvule (bvadd (_ bv24 32) (select (select (store (store (store (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_#t~mem33#1.base| v_ArrVal_7827) .cse0 v_ArrVal_7731) .cse1 v_ArrVal_7732) .cse2 v_ArrVal_7734) |c_ULTIMATE.start_main_~user~0#1.base|) .cse3)) (select |c_#length| (select (select (store .cse4 .cse2 v_ArrVal_7735) |c_ULTIMATE.start_main_~user~0#1.base|) .cse3)))))))))) (forall ((v_ArrVal_7827 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7826 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7734 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7733 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7732 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7731 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7730 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse7 (select (select (let ((.cse11 (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem33#1.base| v_ArrVal_7826))) (let ((.cse8 (select (select .cse11 |c_ULTIMATE.start_main_~user~0#1.base|) .cse3))) (let ((.cse10 (store .cse11 .cse8 v_ArrVal_7730))) (let ((.cse9 (select (select .cse10 |c_ULTIMATE.start_main_~user~0#1.base|) .cse3))) (store (store (store (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_#t~mem33#1.base| v_ArrVal_7827) .cse8 v_ArrVal_7731) .cse9 v_ArrVal_7732) (select (select (store .cse10 .cse9 v_ArrVal_7733) |c_ULTIMATE.start_main_~user~0#1.base|) .cse3) v_ArrVal_7734))))) |c_ULTIMATE.start_main_~user~0#1.base|) .cse3))) (bvule (bvadd (_ bv20 32) .cse7) (bvadd (_ bv24 32) .cse7)))))) is different from false [2024-11-28 03:54:32,057 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1170713295] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:54:32,057 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-28 03:54:32,057 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11] total 12 [2024-11-28 03:54:32,057 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [982835234] [2024-11-28 03:54:32,057 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-28 03:54:32,058 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-28 03:54:32,058 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 03:54:32,058 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-28 03:54:32,059 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=250, Unknown=27, NotChecked=462, Total=812 [2024-11-28 03:54:32,059 INFO L87 Difference]: Start difference. First operand 819 states and 881 transitions. Second operand has 13 states, 11 states have (on average 10.0) internal successors, (110), 13 states have internal predecessors, (110), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-28 03:56:15,747 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:56:15,747 INFO L93 Difference]: Finished difference Result 818 states and 880 transitions. [2024-11-28 03:56:15,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-28 03:56:15,748 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 11 states have (on average 10.0) internal successors, (110), 13 states have internal predecessors, (110), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 125 [2024-11-28 03:56:15,748 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:56:15,750 INFO L225 Difference]: With dead ends: 818 [2024-11-28 03:56:15,751 INFO L226 Difference]: Without dead ends: 818 [2024-11-28 03:56:15,751 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 282 GetRequests, 244 SyntacticMatches, 3 SemanticMatches, 35 ConstructedPredicates, 11 IntricatePredicates, 0 DeprecatedPredicates, 97 ImplicationChecksByTransitivity, 26.3s TimeCoverageRelationStatistics Valid=130, Invalid=536, Unknown=28, NotChecked=638, Total=1332 [2024-11-28 03:56:15,751 INFO L435 NwaCegarLoop]: 460 mSDtfsCounter, 420 mSDsluCounter, 1869 mSDsCounter, 0 mSdLazyCounter, 2704 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 96.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 422 SdHoareTripleChecker+Valid, 2329 SdHoareTripleChecker+Invalid, 2711 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 2704 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 97.2s IncrementalHoareTripleChecker+Time [2024-11-28 03:56:15,752 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [422 Valid, 2329 Invalid, 2711 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 2704 Invalid, 0 Unknown, 0 Unchecked, 97.2s Time] [2024-11-28 03:56:15,753 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 818 states. [2024-11-28 03:56:15,761 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 818 to 818. [2024-11-28 03:56:15,762 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 818 states, 548 states have (on average 1.5930656934306568) internal successors, (873), 812 states have internal predecessors, (873), 3 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2024-11-28 03:56:15,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 818 states to 818 states and 880 transitions. [2024-11-28 03:56:15,764 INFO L78 Accepts]: Start accepts. Automaton has 818 states and 880 transitions. Word has length 125 [2024-11-28 03:56:15,765 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:56:15,765 INFO L471 AbstractCegarLoop]: Abstraction has 818 states and 880 transitions. [2024-11-28 03:56:15,766 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 11 states have (on average 10.0) internal successors, (110), 13 states have internal predecessors, (110), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-28 03:56:15,766 INFO L276 IsEmpty]: Start isEmpty. Operand 818 states and 880 transitions. [2024-11-28 03:56:15,767 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2024-11-28 03:56:15,767 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:56:15,768 INFO L218 NwaCegarLoop]: trace histogram [44, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:56:15,795 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_baab3a94-b378-48f0-85dc-9d3ad2a813c3/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Ended with exit code 0 [2024-11-28 03:56:15,994 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_baab3a94-b378-48f0-85dc-9d3ad2a813c3/bin/uautomizer-verify-aQ6SnzHsRB/cvc4 --incremental --print-success --lang smt (34)] Ended with exit code 0 [2024-11-28 03:56:16,168 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_baab3a94-b378-48f0-85dc-9d3ad2a813c3/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,34 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_baab3a94-b378-48f0-85dc-9d3ad2a813c3/bin/uautomizer-verify-aQ6SnzHsRB/cvc4 --incremental --print-success --lang smt [2024-11-28 03:56:16,169 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr88REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 422 more)] === [2024-11-28 03:56:16,169 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:56:16,169 INFO L85 PathProgramCache]: Analyzing trace with hash 2125742392, now seen corresponding path program 1 times [2024-11-28 03:56:16,170 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 03:56:16,170 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [191922547] [2024-11-28 03:56:16,170 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:56:16,170 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:56:16,170 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_baab3a94-b378-48f0-85dc-9d3ad2a813c3/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:56:16,172 INFO L229 MonitoredProcess]: Starting monitored process 35 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_baab3a94-b378-48f0-85dc-9d3ad2a813c3/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:56:16,173 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_baab3a94-b378-48f0-85dc-9d3ad2a813c3/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Waiting until timeout for monitored process [2024-11-28 03:56:17,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:56:17,195 INFO L256 TraceCheckSpWp]: Trace formula consists of 888 conjuncts, 67 conjuncts are in the unsatisfiable core [2024-11-28 03:56:17,204 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:56:21,078 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2024-11-28 03:56:21,078 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2024-11-28 03:56:21,604 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2024-11-28 03:56:28,993 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-28 03:56:28,993 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 31 treesize of output 32 [2024-11-28 03:56:30,353 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-28 03:56:30,354 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 31 treesize of output 32 [2024-11-28 03:56:31,929 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-28 03:56:31,930 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 31 treesize of output 32 [2024-11-28 03:56:33,559 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-28 03:56:33,559 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 31 treesize of output 32 [2024-11-28 03:56:35,150 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-28 03:56:35,150 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 44 treesize of output 43 [2024-11-28 03:56:36,379 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 15 [2024-11-28 03:56:37,936 INFO L349 Elim1Store]: treesize reduction 24, result has 33.3 percent of original size [2024-11-28 03:56:37,936 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 [2024-11-28 03:56:38,008 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 946 trivial. 0 not checked. [2024-11-28 03:56:38,008 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:56:40,432 INFO L349 Elim1Store]: treesize reduction 7, result has 63.2 percent of original size [2024-11-28 03:56:40,433 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 24 [2024-11-28 03:56:41,917 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_8282 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (let ((.cse0 (select (select |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (= (select (select (store |c_#memory_$Pointer$#1.base| .cse0 v_ArrVal_8282) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) .cse0)))) is different from false [2024-11-28 03:56:42,136 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_8282 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8281 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse1 (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem37#1.base| v_ArrVal_8281)) (.cse2 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (let ((.cse0 (select (select .cse1 |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (= .cse0 (select (select (store .cse1 .cse0 v_ArrVal_8282) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))))) is different from false [2024-11-28 03:56:42,287 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_8282 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8281 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse2 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (let ((.cse1 (store |c_#memory_$Pointer$#1.base| (select (select |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse2) v_ArrVal_8281))) (let ((.cse0 (select (select .cse1 |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (= .cse0 (select (select (store .cse1 .cse0 v_ArrVal_8282) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2)))))) is different from false [2024-11-28 03:56:42,506 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_8282 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8281 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8280 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse2 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (let ((.cse0 (let ((.cse3 (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem36#1.base| v_ArrVal_8280))) (store .cse3 (select (select .cse3 |c_ULTIMATE.start_main_~user~0#1.base|) .cse2) v_ArrVal_8281)))) (let ((.cse1 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (= (select (select (store .cse0 .cse1 v_ArrVal_8282) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2) .cse1))))) is different from false [2024-11-28 03:56:42,658 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_8282 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8281 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8280 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse2 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (let ((.cse1 (let ((.cse3 (store |c_#memory_$Pointer$#1.base| (select (select |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse2) v_ArrVal_8280))) (store .cse3 (select (select .cse3 |c_ULTIMATE.start_main_~user~0#1.base|) .cse2) v_ArrVal_8281)))) (let ((.cse0 (select (select .cse1 |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (= .cse0 (select (select (store .cse1 .cse0 v_ArrVal_8282) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2)))))) is different from false [2024-11-28 03:56:42,883 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_8282 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8281 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8280 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8279 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse2 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (let ((.cse1 (let ((.cse3 (let ((.cse4 (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem35#1.base| v_ArrVal_8279))) (store .cse4 (select (select .cse4 |c_ULTIMATE.start_main_~user~0#1.base|) .cse2) v_ArrVal_8280)))) (store .cse3 (select (select .cse3 |c_ULTIMATE.start_main_~user~0#1.base|) .cse2) v_ArrVal_8281)))) (let ((.cse0 (select (select .cse1 |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (= .cse0 (select (select (store .cse1 .cse0 v_ArrVal_8282) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2)))))) is different from false [2024-11-28 03:56:43,044 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_8282 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8281 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8280 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8279 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse2 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (let ((.cse1 (let ((.cse3 (let ((.cse4 (store |c_#memory_$Pointer$#1.base| (select (select |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse2) v_ArrVal_8279))) (store .cse4 (select (select .cse4 |c_ULTIMATE.start_main_~user~0#1.base|) .cse2) v_ArrVal_8280)))) (store .cse3 (select (select .cse3 |c_ULTIMATE.start_main_~user~0#1.base|) .cse2) v_ArrVal_8281)))) (let ((.cse0 (select (select .cse1 |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (= .cse0 (select (select (store .cse1 .cse0 v_ArrVal_8282) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2)))))) is different from false [2024-11-28 03:56:46,659 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_8282 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8281 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8329 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8280 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8279 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse2 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (let ((.cse1 (let ((.cse3 (let ((.cse4 (let ((.cse5 (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem33#1.base| v_ArrVal_8329))) (store .cse5 (select (select .cse5 |c_ULTIMATE.start_main_~user~0#1.base|) .cse2) v_ArrVal_8279)))) (store .cse4 (select (select .cse4 |c_ULTIMATE.start_main_~user~0#1.base|) .cse2) v_ArrVal_8280)))) (store .cse3 (select (select .cse3 |c_ULTIMATE.start_main_~user~0#1.base|) .cse2) v_ArrVal_8281)))) (let ((.cse0 (select (select .cse1 |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (= .cse0 (select (select (store .cse1 .cse0 v_ArrVal_8282) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2)))))) is different from false [2024-11-28 03:56:46,697 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 03:56:46,697 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [191922547] [2024-11-28 03:56:46,697 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [191922547] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:56:46,697 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1309070018] [2024-11-28 03:56:46,697 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:56:46,697 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-28 03:56:46,697 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_baab3a94-b378-48f0-85dc-9d3ad2a813c3/bin/uautomizer-verify-aQ6SnzHsRB/cvc4 [2024-11-28 03:56:46,699 INFO L229 MonitoredProcess]: Starting monitored process 36 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_baab3a94-b378-48f0-85dc-9d3ad2a813c3/bin/uautomizer-verify-aQ6SnzHsRB/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-28 03:56:46,701 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_baab3a94-b378-48f0-85dc-9d3ad2a813c3/bin/uautomizer-verify-aQ6SnzHsRB/cvc4 --incremental --print-success --lang smt (36)] Waiting until timeout for monitored process [2024-11-28 03:56:53,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:56:53,683 INFO L256 TraceCheckSpWp]: Trace formula consists of 888 conjuncts, 72 conjuncts are in the unsatisfiable core [2024-11-28 03:56:53,692 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:56:55,042 INFO L349 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2024-11-28 03:56:55,042 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 [2024-11-28 03:57:04,146 INFO L349 Elim1Store]: treesize reduction 54, result has 29.9 percent of original size [2024-11-28 03:57:04,146 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 [2024-11-28 03:57:05,740 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 [2024-11-28 03:57:09,581 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 [2024-11-28 03:57:41,071 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-28 03:57:41,072 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 [2024-11-28 03:57:45,723 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-28 03:57:45,723 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 [2024-11-28 03:57:48,767 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-28 03:57:48,768 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 [2024-11-28 03:57:51,675 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-28 03:57:51,675 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 [2024-11-28 03:57:54,647 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-28 03:57:54,648 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 [2024-11-28 03:57:55,349 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 [2024-11-28 03:57:58,478 INFO L349 Elim1Store]: treesize reduction 82, result has 29.3 percent of original size [2024-11-28 03:57:58,478 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 [2024-11-28 03:57:58,830 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 946 trivial. 0 not checked. [2024-11-28 03:57:58,830 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:58:01,938 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_8786 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (_ bv1 1) (select |c_#valid| (let ((.cse0 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (store |c_#memory_$Pointer$#1.base| (select (select |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse0) v_ArrVal_8786) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0)))))) is different from false [2024-11-28 03:58:02,137 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_8786 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8785 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (_ bv1 1) (select |c_#valid| (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (let ((.cse0 (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem37#1.base| v_ArrVal_8785))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_8786)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))))) is different from false [2024-11-28 03:58:02,277 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_8786 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8785 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (_ bv1 1) (select |c_#valid| (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (let ((.cse0 (store |c_#memory_$Pointer$#1.base| (select (select |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_8785))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_8786)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))))) is different from false [2024-11-28 03:58:02,477 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_8786 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8785 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8784 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (_ bv1 1) (select |c_#valid| (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (let ((.cse0 (let ((.cse2 (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem36#1.base| v_ArrVal_8784))) (store .cse2 (select (select .cse2 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_8785)))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_8786)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))))) is different from false [2024-11-28 03:58:02,619 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_8786 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8785 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8784 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (_ bv1 1) (select |c_#valid| (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (let ((.cse0 (let ((.cse2 (store |c_#memory_$Pointer$#1.base| (select (select |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_8784))) (store .cse2 (select (select .cse2 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_8785)))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_8786)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))))) is different from false [2024-11-28 03:58:02,829 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_8786 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8785 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8784 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8783 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (_ bv1 1) (select |c_#valid| (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (let ((.cse0 (let ((.cse2 (let ((.cse3 (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem35#1.base| v_ArrVal_8783))) (store .cse3 (select (select .cse3 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_8784)))) (store .cse2 (select (select .cse2 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_8785)))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_8786)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))))) is different from false [2024-11-28 03:58:02,983 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_8786 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8785 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8784 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8783 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (_ bv1 1) (select |c_#valid| (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (let ((.cse0 (let ((.cse2 (let ((.cse3 (store |c_#memory_$Pointer$#1.base| (select (select |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_8783))) (store .cse3 (select (select .cse3 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_8784)))) (store .cse2 (select (select .cse2 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_8785)))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_8786)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))))) is different from false [2024-11-28 03:58:08,508 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1309070018] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:58:08,508 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-28 03:58:08,508 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 13] total 27 [2024-11-28 03:58:08,508 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [556208567] [2024-11-28 03:58:08,508 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-28 03:58:08,509 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2024-11-28 03:58:08,509 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 03:58:08,509 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2024-11-28 03:58:08,509 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=168, Invalid=856, Unknown=28, NotChecked=1110, Total=2162 [2024-11-28 03:58:08,510 INFO L87 Difference]: Start difference. First operand 818 states and 880 transitions. Second operand has 28 states, 25 states have (on average 6.8) internal successors, (170), 27 states have internal predecessors, (170), 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)