./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/uthash-2.0.2/uthash_OAT_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_1b82ffcb-81a8-434a-9eba-3030712c62d6/bin/uautomizer-verify-84ZbGMXZE1/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b82ffcb-81a8-434a-9eba-3030712c62d6/bin/uautomizer-verify-84ZbGMXZE1/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b82ffcb-81a8-434a-9eba-3030712c62d6/bin/uautomizer-verify-84ZbGMXZE1/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b82ffcb-81a8-434a-9eba-3030712c62d6/bin/uautomizer-verify-84ZbGMXZE1/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_OAT_nondet_test1-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b82ffcb-81a8-434a-9eba-3030712c62d6/bin/uautomizer-verify-84ZbGMXZE1/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b82ffcb-81a8-434a-9eba-3030712c62d6/bin/uautomizer-verify-84ZbGMXZE1 --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 [2024-12-02 12:11:03,363 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-12-02 12:11:03,421 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b82ffcb-81a8-434a-9eba-3030712c62d6/bin/uautomizer-verify-84ZbGMXZE1/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2024-12-02 12:11:03,425 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-12-02 12:11:03,425 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-12-02 12:11:03,445 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-12-02 12:11:03,445 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-12-02 12:11:03,446 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-12-02 12:11:03,446 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-12-02 12:11:03,446 INFO L153 SettingsManager]: * Use memory slicer=true [2024-12-02 12:11:03,446 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-12-02 12:11:03,446 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-12-02 12:11:03,447 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-12-02 12:11:03,447 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-12-02 12:11:03,447 INFO L153 SettingsManager]: * Use SBE=true [2024-12-02 12:11:03,447 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-12-02 12:11:03,447 INFO L153 SettingsManager]: * sizeof long=4 [2024-12-02 12:11:03,447 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-12-02 12:11:03,447 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-12-02 12:11:03,447 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-12-02 12:11:03,448 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-12-02 12:11:03,448 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-12-02 12:11:03,448 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-12-02 12:11:03,448 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-12-02 12:11:03,448 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-12-02 12:11:03,448 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-12-02 12:11:03,448 INFO L153 SettingsManager]: * sizeof long double=12 [2024-12-02 12:11:03,448 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-12-02 12:11:03,448 INFO L153 SettingsManager]: * Use constant arrays=true [2024-12-02 12:11:03,449 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-12-02 12:11:03,449 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-12-02 12:11:03,449 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-12-02 12:11:03,449 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-12-02 12:11:03,449 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 12:11:03,449 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-12-02 12:11:03,449 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-12-02 12:11:03,449 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-12-02 12:11:03,449 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-12-02 12:11:03,449 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 12:11:03,450 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-12-02 12:11:03,450 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-12-02 12:11:03,450 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-12-02 12:11:03,450 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-12-02 12:11:03,450 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-12-02 12:11:03,450 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-12-02 12:11:03,450 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-12-02 12:11:03,450 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-12-02 12:11:03,450 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_1b82ffcb-81a8-434a-9eba-3030712c62d6/bin/uautomizer-verify-84ZbGMXZE1 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 [2024-12-02 12:11:03,664 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-12-02 12:11:03,671 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-12-02 12:11:03,673 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-12-02 12:11:03,674 INFO L270 PluginConnector]: Initializing CDTParser... [2024-12-02 12:11:03,675 INFO L274 PluginConnector]: CDTParser initialized [2024-12-02 12:11:03,676 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b82ffcb-81a8-434a-9eba-3030712c62d6/bin/uautomizer-verify-84ZbGMXZE1/../../sv-benchmarks/c/uthash-2.0.2/uthash_OAT_nondet_test1-2.i [2024-12-02 12:11:06,258 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b82ffcb-81a8-434a-9eba-3030712c62d6/bin/uautomizer-verify-84ZbGMXZE1/data/a1928323a/38e566a5130b44b9ba36906d125e7f0a/FLAG9e81a7c35 [2024-12-02 12:11:06,519 INFO L384 CDTParser]: Found 1 translation units. [2024-12-02 12:11:06,520 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b82ffcb-81a8-434a-9eba-3030712c62d6/sv-benchmarks/c/uthash-2.0.2/uthash_OAT_nondet_test1-2.i [2024-12-02 12:11:06,533 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b82ffcb-81a8-434a-9eba-3030712c62d6/bin/uautomizer-verify-84ZbGMXZE1/data/a1928323a/38e566a5130b44b9ba36906d125e7f0a/FLAG9e81a7c35 [2024-12-02 12:11:06,837 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b82ffcb-81a8-434a-9eba-3030712c62d6/bin/uautomizer-verify-84ZbGMXZE1/data/a1928323a/38e566a5130b44b9ba36906d125e7f0a [2024-12-02 12:11:06,839 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-12-02 12:11:06,840 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-12-02 12:11:06,841 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-12-02 12:11:06,841 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-12-02 12:11:06,844 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-12-02 12:11:06,845 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 12:11:06" (1/1) ... [2024-12-02 12:11:06,845 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4bd62a11 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:11:06, skipping insertion in model container [2024-12-02 12:11:06,845 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 12:11:06" (1/1) ... [2024-12-02 12:11:06,874 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-12-02 12:11:07,177 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-12-02 12:11:07,207 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-12-02 12:11:07,210 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-12-02 12:11:07,214 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-12-02 12:11:07,219 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-12-02 12:11:07,229 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-12-02 12:11:07,230 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-12-02 12:11:07,232 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-12-02 12:11:07,233 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-12-02 12:11:07,234 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-12-02 12:11:07,234 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-12-02 12:11:07,238 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-12-02 12:11:07,241 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-12-02 12:11:07,253 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) [2024-12-02 12:11:07,253 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@729ebc6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:11:07, skipping insertion in model container [2024-12-02 12:11:07,253 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-12-02 12:11:07,254 INFO L186 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2024-12-02 12:11:07,255 INFO L158 Benchmark]: Toolchain (without parser) took 414.77ms. Allocated memory is still 142.6MB. Free memory was 114.7MB in the beginning and 97.5MB in the end (delta: 17.2MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2024-12-02 12:11:07,256 INFO L158 Benchmark]: CDTParser took 0.29ms. Allocated memory is still 142.6MB. Free memory is still 83.0MB. There was no memory consumed. Max. memory is 16.1GB. [2024-12-02 12:11:07,256 INFO L158 Benchmark]: CACSL2BoogieTranslator took 412.74ms. Allocated memory is still 142.6MB. Free memory was 114.7MB in the beginning and 97.7MB in the end (delta: 17.0MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2024-12-02 12:11:07,257 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.29ms. Allocated memory is still 142.6MB. Free memory is still 83.0MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 412.74ms. Allocated memory is still 142.6MB. Free memory was 114.7MB in the beginning and 97.7MB in the end (delta: 17.0MB). 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_1b82ffcb-81a8-434a-9eba-3030712c62d6/bin/uautomizer-verify-84ZbGMXZE1/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b82ffcb-81a8-434a-9eba-3030712c62d6/bin/uautomizer-verify-84ZbGMXZE1/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b82ffcb-81a8-434a-9eba-3030712c62d6/bin/uautomizer-verify-84ZbGMXZE1/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b82ffcb-81a8-434a-9eba-3030712c62d6/bin/uautomizer-verify-84ZbGMXZE1/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_OAT_nondet_test1-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b82ffcb-81a8-434a-9eba-3030712c62d6/bin/uautomizer-verify-84ZbGMXZE1/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b82ffcb-81a8-434a-9eba-3030712c62d6/bin/uautomizer-verify-84ZbGMXZE1 --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 [2024-12-02 12:11:09,003 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-12-02 12:11:09,082 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b82ffcb-81a8-434a-9eba-3030712c62d6/bin/uautomizer-verify-84ZbGMXZE1/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2024-12-02 12:11:09,088 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-12-02 12:11:09,088 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-12-02 12:11:09,109 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-12-02 12:11:09,110 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-12-02 12:11:09,110 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-12-02 12:11:09,111 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-12-02 12:11:09,111 INFO L153 SettingsManager]: * Use memory slicer=true [2024-12-02 12:11:09,111 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-12-02 12:11:09,111 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-12-02 12:11:09,111 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-12-02 12:11:09,111 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-12-02 12:11:09,111 INFO L153 SettingsManager]: * Use SBE=true [2024-12-02 12:11:09,112 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-12-02 12:11:09,112 INFO L153 SettingsManager]: * sizeof long=4 [2024-12-02 12:11:09,112 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-12-02 12:11:09,112 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-12-02 12:11:09,112 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-12-02 12:11:09,112 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-12-02 12:11:09,112 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-12-02 12:11:09,112 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-12-02 12:11:09,112 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-12-02 12:11:09,113 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-12-02 12:11:09,113 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2024-12-02 12:11:09,113 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2024-12-02 12:11:09,113 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-12-02 12:11:09,113 INFO L153 SettingsManager]: * sizeof long double=12 [2024-12-02 12:11:09,113 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-12-02 12:11:09,113 INFO L153 SettingsManager]: * Use constant arrays=true [2024-12-02 12:11:09,113 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-12-02 12:11:09,113 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-12-02 12:11:09,113 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-12-02 12:11:09,114 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-12-02 12:11:09,114 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 12:11:09,114 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-12-02 12:11:09,114 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-12-02 12:11:09,114 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-12-02 12:11:09,114 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-12-02 12:11:09,114 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 12:11:09,114 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-12-02 12:11:09,114 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-12-02 12:11:09,114 INFO L153 SettingsManager]: * Trace refinement strategy=FOX [2024-12-02 12:11:09,114 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2024-12-02 12:11:09,115 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-12-02 12:11:09,115 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-12-02 12:11:09,115 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-12-02 12:11:09,115 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-12-02 12:11:09,115 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_1b82ffcb-81a8-434a-9eba-3030712c62d6/bin/uautomizer-verify-84ZbGMXZE1 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 [2024-12-02 12:11:09,353 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-12-02 12:11:09,360 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-12-02 12:11:09,362 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-12-02 12:11:09,364 INFO L270 PluginConnector]: Initializing CDTParser... [2024-12-02 12:11:09,364 INFO L274 PluginConnector]: CDTParser initialized [2024-12-02 12:11:09,365 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b82ffcb-81a8-434a-9eba-3030712c62d6/bin/uautomizer-verify-84ZbGMXZE1/../../sv-benchmarks/c/uthash-2.0.2/uthash_OAT_nondet_test1-2.i [2024-12-02 12:11:12,040 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b82ffcb-81a8-434a-9eba-3030712c62d6/bin/uautomizer-verify-84ZbGMXZE1/data/5cb33f801/9e979c95af3543dd893260b3e658571f/FLAG7459e20e9 [2024-12-02 12:11:12,263 INFO L384 CDTParser]: Found 1 translation units. [2024-12-02 12:11:12,264 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b82ffcb-81a8-434a-9eba-3030712c62d6/sv-benchmarks/c/uthash-2.0.2/uthash_OAT_nondet_test1-2.i [2024-12-02 12:11:12,278 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b82ffcb-81a8-434a-9eba-3030712c62d6/bin/uautomizer-verify-84ZbGMXZE1/data/5cb33f801/9e979c95af3543dd893260b3e658571f/FLAG7459e20e9 [2024-12-02 12:11:12,290 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b82ffcb-81a8-434a-9eba-3030712c62d6/bin/uautomizer-verify-84ZbGMXZE1/data/5cb33f801/9e979c95af3543dd893260b3e658571f [2024-12-02 12:11:12,292 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-12-02 12:11:12,293 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-12-02 12:11:12,295 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-12-02 12:11:12,295 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-12-02 12:11:12,299 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-12-02 12:11:12,300 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 12:11:12" (1/1) ... [2024-12-02 12:11:12,301 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7bd99594 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:11:12, skipping insertion in model container [2024-12-02 12:11:12,301 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 12:11:12" (1/1) ... [2024-12-02 12:11:12,333 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-12-02 12:11:12,652 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-12-02 12:11:12,685 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-12-02 12:11:12,689 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-12-02 12:11:12,692 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-12-02 12:11:12,700 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-12-02 12:11:12,712 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-12-02 12:11:12,713 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-12-02 12:11:12,715 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-12-02 12:11:12,716 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-12-02 12:11:12,718 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-12-02 12:11:12,718 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-12-02 12:11:12,722 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-12-02 12:11:12,725 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-12-02 12:11:12,736 INFO L197 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2024-12-02 12:11:12,745 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-12-02 12:11:12,773 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-12-02 12:11:12,791 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-12-02 12:11:12,793 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-12-02 12:11:12,796 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-12-02 12:11:12,802 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-12-02 12:11:12,812 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-12-02 12:11:12,812 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-12-02 12:11:12,815 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-12-02 12:11:12,816 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-12-02 12:11:12,817 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-12-02 12:11:12,817 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-12-02 12:11:12,821 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-12-02 12:11:12,823 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-12-02 12:11:12,828 INFO L200 MainTranslator]: Completed pre-run [2024-12-02 12:11:12,894 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-12-02 12:11:12,926 INFO L204 MainTranslator]: Completed translation [2024-12-02 12:11:12,927 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:11:12 WrapperNode [2024-12-02 12:11:12,927 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-12-02 12:11:12,927 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-12-02 12:11:12,928 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-12-02 12:11:12,928 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-12-02 12:11:12,932 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:11:12" (1/1) ... [2024-12-02 12:11:12,952 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:11:12" (1/1) ... [2024-12-02 12:11:12,988 INFO L138 Inliner]: procedures = 179, calls = 221, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 739 [2024-12-02 12:11:12,989 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-12-02 12:11:12,989 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-12-02 12:11:12,989 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-12-02 12:11:12,989 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-12-02 12:11:12,997 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:11:12" (1/1) ... [2024-12-02 12:11:12,997 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:11:12" (1/1) ... [2024-12-02 12:11:13,005 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:11:12" (1/1) ... [2024-12-02 12:11:13,050 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]. [2024-12-02 12:11:13,050 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:11:12" (1/1) ... [2024-12-02 12:11:13,050 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:11:12" (1/1) ... [2024-12-02 12:11:13,080 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:11:12" (1/1) ... [2024-12-02 12:11:13,081 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:11:12" (1/1) ... [2024-12-02 12:11:13,087 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:11:12" (1/1) ... [2024-12-02 12:11:13,090 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:11:12" (1/1) ... [2024-12-02 12:11:13,093 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:11:12" (1/1) ... [2024-12-02 12:11:13,100 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-12-02 12:11:13,101 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-12-02 12:11:13,101 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-12-02 12:11:13,101 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-12-02 12:11:13,102 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:11:12" (1/1) ... [2024-12-02 12:11:13,107 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 12:11:13,116 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b82ffcb-81a8-434a-9eba-3030712c62d6/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 12:11:13,126 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b82ffcb-81a8-434a-9eba-3030712c62d6/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-12-02 12:11:13,129 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b82ffcb-81a8-434a-9eba-3030712c62d6/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-12-02 12:11:13,155 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#0 [2024-12-02 12:11:13,155 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#1 [2024-12-02 12:11:13,155 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#0 [2024-12-02 12:11:13,155 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#1 [2024-12-02 12:11:13,155 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#0 [2024-12-02 12:11:13,155 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#1 [2024-12-02 12:11:13,155 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#0 [2024-12-02 12:11:13,155 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#1 [2024-12-02 12:11:13,155 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-12-02 12:11:13,155 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-12-02 12:11:13,155 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2024-12-02 12:11:13,156 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2024-12-02 12:11:13,156 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2024-12-02 12:11:13,156 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2024-12-02 12:11:13,156 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-12-02 12:11:13,156 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#0 [2024-12-02 12:11:13,156 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#1 [2024-12-02 12:11:13,156 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2024-12-02 12:11:13,156 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#1 [2024-12-02 12:11:13,156 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-12-02 12:11:13,156 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-12-02 12:11:13,320 INFO L234 CfgBuilder]: Building ICFG [2024-12-02 12:11:13,322 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-12-02 12:11:13,325 WARN L773 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2024-12-02 12:11:13,366 WARN L773 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2024-12-02 12:11:16,204 INFO L? ?]: Removed 893 outVars from TransFormulas that were not future-live. [2024-12-02 12:11:16,204 INFO L283 CfgBuilder]: Performing block encoding [2024-12-02 12:11:16,226 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-12-02 12:11:16,227 INFO L312 CfgBuilder]: Removed 23 assume(true) statements. [2024-12-02 12:11:16,227 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 12:11:16 BoogieIcfgContainer [2024-12-02 12:11:16,227 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-12-02 12:11:16,229 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-12-02 12:11:16,229 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-12-02 12:11:16,233 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-12-02 12:11:16,233 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 12:11:12" (1/3) ... [2024-12-02 12:11:16,234 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6b3087ce and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 12:11:16, skipping insertion in model container [2024-12-02 12:11:16,234 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 12:11:12" (2/3) ... [2024-12-02 12:11:16,234 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6b3087ce and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 12:11:16, skipping insertion in model container [2024-12-02 12:11:16,234 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 12:11:16" (3/3) ... [2024-12-02 12:11:16,235 INFO L128 eAbstractionObserver]: Analyzing ICFG uthash_OAT_nondet_test1-2.i [2024-12-02 12:11:16,249 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-12-02 12:11:16,251 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG uthash_OAT_nondet_test1-2.i that has 3 procedures, 842 locations, 1 initial locations, 25 loop locations, and 425 error locations. [2024-12-02 12:11:16,297 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-12-02 12:11:16,307 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;@526f0cf9, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-12-02 12:11:16,308 INFO L334 AbstractCegarLoop]: Starting to check reachability of 425 error locations. [2024-12-02 12:11:16,313 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) [2024-12-02 12:11:16,317 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2024-12-02 12:11:16,317 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 12:11:16,317 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2024-12-02 12:11:16,317 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)] === [2024-12-02 12:11:16,321 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 12:11:16,321 INFO L85 PathProgramCache]: Analyzing trace with hash 1449868554, now seen corresponding path program 1 times [2024-12-02 12:11:16,328 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-12-02 12:11:16,328 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1727336067] [2024-12-02 12:11:16,328 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:11:16,329 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 12:11:16,329 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b82ffcb-81a8-434a-9eba-3030712c62d6/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 12:11:16,331 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b82ffcb-81a8-434a-9eba-3030712c62d6/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 12:11:16,332 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b82ffcb-81a8-434a-9eba-3030712c62d6/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-12-02 12:11:16,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:11:16,456 INFO L256 TraceCheckSpWp]: Trace formula consists of 21 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-12-02 12:11:16,460 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 12:11:16,469 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 12:11:16,469 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 12:11:16,469 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-12-02 12:11:16,470 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1727336067] [2024-12-02 12:11:16,470 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1727336067] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 12:11:16,470 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 12:11:16,470 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-12-02 12:11:16,472 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [287382958] [2024-12-02 12:11:16,472 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 12:11:16,476 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-12-02 12:11:16,476 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-12-02 12:11:16,498 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-12-02 12:11:16,498 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-12-02 12:11:16,502 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) [2024-12-02 12:11:16,563 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 12:11:16,564 INFO L93 Difference]: Finished difference Result 827 states and 865 transitions. [2024-12-02 12:11:16,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-12-02 12:11:16,566 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 [2024-12-02 12:11:16,566 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 12:11:16,576 INFO L225 Difference]: With dead ends: 827 [2024-12-02 12:11:16,576 INFO L226 Difference]: Without dead ends: 825 [2024-12-02 12:11:16,578 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 [2024-12-02 12:11:16,581 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 [2024-12-02 12:11:16,582 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] [2024-12-02 12:11:16,598 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 825 states. [2024-12-02 12:11:16,632 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 825 to 825. [2024-12-02 12:11:16,634 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) [2024-12-02 12:11:16,640 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 825 states to 825 states and 863 transitions. [2024-12-02 12:11:16,642 INFO L78 Accepts]: Start accepts. Automaton has 825 states and 863 transitions. Word has length 6 [2024-12-02 12:11:16,642 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 12:11:16,642 INFO L471 AbstractCegarLoop]: Abstraction has 825 states and 863 transitions. [2024-12-02 12:11:16,642 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) [2024-12-02 12:11:16,642 INFO L276 IsEmpty]: Start isEmpty. Operand 825 states and 863 transitions. [2024-12-02 12:11:16,642 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2024-12-02 12:11:16,643 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 12:11:16,643 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2024-12-02 12:11:16,649 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b82ffcb-81a8-434a-9eba-3030712c62d6/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-12-02 12:11:16,843 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b82ffcb-81a8-434a-9eba-3030712c62d6/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 12:11:16,843 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)] === [2024-12-02 12:11:16,844 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 12:11:16,844 INFO L85 PathProgramCache]: Analyzing trace with hash 1422103338, now seen corresponding path program 1 times [2024-12-02 12:11:16,844 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-12-02 12:11:16,844 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [697071498] [2024-12-02 12:11:16,844 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:11:16,845 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 12:11:16,845 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b82ffcb-81a8-434a-9eba-3030712c62d6/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 12:11:16,846 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b82ffcb-81a8-434a-9eba-3030712c62d6/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 12:11:16,848 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b82ffcb-81a8-434a-9eba-3030712c62d6/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-12-02 12:11:16,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:11:16,941 INFO L256 TraceCheckSpWp]: Trace formula consists of 27 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-12-02 12:11:16,943 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 12:11:16,966 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 [2024-12-02 12:11:16,981 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 12:11:16,981 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 12:11:16,981 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-12-02 12:11:16,982 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [697071498] [2024-12-02 12:11:16,982 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [697071498] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 12:11:16,982 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 12:11:16,982 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-12-02 12:11:16,982 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1971953895] [2024-12-02 12:11:16,982 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 12:11:16,983 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 12:11:16,983 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-12-02 12:11:16,983 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 12:11:16,984 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 12:11:16,984 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) [2024-12-02 12:11:18,189 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 12:11:18,189 INFO L93 Difference]: Finished difference Result 779 states and 818 transitions. [2024-12-02 12:11:18,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 12:11:18,190 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 [2024-12-02 12:11:18,190 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 12:11:18,192 INFO L225 Difference]: With dead ends: 779 [2024-12-02 12:11:18,193 INFO L226 Difference]: Without dead ends: 779 [2024-12-02 12:11:18,193 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 [2024-12-02 12:11:18,193 INFO L435 NwaCegarLoop]: 506 mSDtfsCounter, 517 mSDsluCounter, 115 mSDsCounter, 0 mSdLazyCounter, 487 mSolverCounterSat, 53 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s 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, 1.2s IncrementalHoareTripleChecker+Time [2024-12-02 12:11:18,194 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [520 Valid, 621 Invalid, 540 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [53 Valid, 487 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2024-12-02 12:11:18,204 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 779 states. [2024-12-02 12:11:18,215 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 779 to 776. [2024-12-02 12:11:18,216 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) [2024-12-02 12:11:18,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 776 states to 776 states and 814 transitions. [2024-12-02 12:11:18,219 INFO L78 Accepts]: Start accepts. Automaton has 776 states and 814 transitions. Word has length 6 [2024-12-02 12:11:18,219 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 12:11:18,219 INFO L471 AbstractCegarLoop]: Abstraction has 776 states and 814 transitions. [2024-12-02 12:11:18,219 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) [2024-12-02 12:11:18,220 INFO L276 IsEmpty]: Start isEmpty. Operand 776 states and 814 transitions. [2024-12-02 12:11:18,220 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2024-12-02 12:11:18,220 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 12:11:18,220 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2024-12-02 12:11:18,229 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b82ffcb-81a8-434a-9eba-3030712c62d6/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-12-02 12:11:18,420 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b82ffcb-81a8-434a-9eba-3030712c62d6/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 12:11:18,421 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)] === [2024-12-02 12:11:18,421 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 12:11:18,421 INFO L85 PathProgramCache]: Analyzing trace with hash 1422103339, now seen corresponding path program 1 times [2024-12-02 12:11:18,421 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-12-02 12:11:18,422 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1851472866] [2024-12-02 12:11:18,422 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:11:18,422 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 12:11:18,422 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b82ffcb-81a8-434a-9eba-3030712c62d6/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 12:11:18,423 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b82ffcb-81a8-434a-9eba-3030712c62d6/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 12:11:18,424 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b82ffcb-81a8-434a-9eba-3030712c62d6/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-12-02 12:11:18,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:11:18,503 INFO L256 TraceCheckSpWp]: Trace formula consists of 27 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-12-02 12:11:18,505 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 12:11:18,515 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 [2024-12-02 12:11:18,535 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 12:11:18,535 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 12:11:18,535 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-12-02 12:11:18,535 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1851472866] [2024-12-02 12:11:18,535 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1851472866] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 12:11:18,535 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 12:11:18,535 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-12-02 12:11:18,535 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1364547567] [2024-12-02 12:11:18,536 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 12:11:18,536 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 12:11:18,536 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-12-02 12:11:18,536 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 12:11:18,536 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 12:11:18,536 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) [2024-12-02 12:11:19,907 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 12:11:19,908 INFO L93 Difference]: Finished difference Result 851 states and 893 transitions. [2024-12-02 12:11:19,908 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 12:11:19,908 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 [2024-12-02 12:11:19,908 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 12:11:19,910 INFO L225 Difference]: With dead ends: 851 [2024-12-02 12:11:19,910 INFO L226 Difference]: Without dead ends: 851 [2024-12-02 12:11:19,911 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 [2024-12-02 12:11:19,911 INFO L435 NwaCegarLoop]: 685 mSDtfsCounter, 268 mSDsluCounter, 282 mSDsCounter, 0 mSdLazyCounter, 461 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s 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, 1.3s IncrementalHoareTripleChecker+Time [2024-12-02 12:11:19,911 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [268 Valid, 967 Invalid, 475 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 461 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2024-12-02 12:11:19,913 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 851 states. [2024-12-02 12:11:19,929 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 851 to 802. [2024-12-02 12:11:19,930 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) [2024-12-02 12:11:19,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 802 states to 802 states and 877 transitions. [2024-12-02 12:11:19,932 INFO L78 Accepts]: Start accepts. Automaton has 802 states and 877 transitions. Word has length 6 [2024-12-02 12:11:19,932 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 12:11:19,932 INFO L471 AbstractCegarLoop]: Abstraction has 802 states and 877 transitions. [2024-12-02 12:11:19,932 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) [2024-12-02 12:11:19,932 INFO L276 IsEmpty]: Start isEmpty. Operand 802 states and 877 transitions. [2024-12-02 12:11:19,932 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2024-12-02 12:11:19,932 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 12:11:19,932 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2024-12-02 12:11:19,941 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b82ffcb-81a8-434a-9eba-3030712c62d6/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-12-02 12:11:20,133 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b82ffcb-81a8-434a-9eba-3030712c62d6/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 12:11:20,133 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)] === [2024-12-02 12:11:20,133 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 12:11:20,134 INFO L85 PathProgramCache]: Analyzing trace with hash 1423056654, now seen corresponding path program 1 times [2024-12-02 12:11:20,134 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-12-02 12:11:20,134 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [400077641] [2024-12-02 12:11:20,134 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:11:20,134 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 12:11:20,134 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b82ffcb-81a8-434a-9eba-3030712c62d6/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 12:11:20,136 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b82ffcb-81a8-434a-9eba-3030712c62d6/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 12:11:20,136 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b82ffcb-81a8-434a-9eba-3030712c62d6/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-12-02 12:11:20,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:11:20,205 INFO L256 TraceCheckSpWp]: Trace formula consists of 21 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-12-02 12:11:20,206 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 12:11:20,245 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 12:11:20,245 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 12:11:20,245 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-12-02 12:11:20,245 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [400077641] [2024-12-02 12:11:20,245 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [400077641] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 12:11:20,245 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 12:11:20,245 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-12-02 12:11:20,245 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1209911665] [2024-12-02 12:11:20,245 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 12:11:20,246 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 12:11:20,246 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-12-02 12:11:20,246 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 12:11:20,246 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-12-02 12:11:20,246 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) [2024-12-02 12:11:20,844 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 12:11:20,844 INFO L93 Difference]: Finished difference Result 1114 states and 1231 transitions. [2024-12-02 12:11:20,845 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-12-02 12:11:20,845 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 [2024-12-02 12:11:20,845 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 12:11:20,849 INFO L225 Difference]: With dead ends: 1114 [2024-12-02 12:11:20,849 INFO L226 Difference]: Without dead ends: 1114 [2024-12-02 12:11:20,849 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 [2024-12-02 12:11:20,850 INFO L435 NwaCegarLoop]: 869 mSDtfsCounter, 332 mSDsluCounter, 1492 mSDsCounter, 0 mSdLazyCounter, 257 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s 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, 0.6s IncrementalHoareTripleChecker+Time [2024-12-02 12:11:20,850 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [332 Valid, 2361 Invalid, 263 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 257 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-12-02 12:11:20,852 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1114 states. [2024-12-02 12:11:20,862 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1114 to 895. [2024-12-02 12:11:20,863 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) [2024-12-02 12:11:20,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 895 states to 895 states and 1030 transitions. [2024-12-02 12:11:20,867 INFO L78 Accepts]: Start accepts. Automaton has 895 states and 1030 transitions. Word has length 6 [2024-12-02 12:11:20,867 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 12:11:20,867 INFO L471 AbstractCegarLoop]: Abstraction has 895 states and 1030 transitions. [2024-12-02 12:11:20,867 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) [2024-12-02 12:11:20,867 INFO L276 IsEmpty]: Start isEmpty. Operand 895 states and 1030 transitions. [2024-12-02 12:11:20,867 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2024-12-02 12:11:20,867 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 12:11:20,867 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 12:11:20,875 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b82ffcb-81a8-434a-9eba-3030712c62d6/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-12-02 12:11:21,068 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b82ffcb-81a8-434a-9eba-3030712c62d6/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 12:11:21,068 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)] === [2024-12-02 12:11:21,068 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 12:11:21,069 INFO L85 PathProgramCache]: Analyzing trace with hash -1338307067, now seen corresponding path program 1 times [2024-12-02 12:11:21,069 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-12-02 12:11:21,069 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2137347932] [2024-12-02 12:11:21,069 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:11:21,069 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 12:11:21,069 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b82ffcb-81a8-434a-9eba-3030712c62d6/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 12:11:21,070 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b82ffcb-81a8-434a-9eba-3030712c62d6/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 12:11:21,071 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b82ffcb-81a8-434a-9eba-3030712c62d6/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-12-02 12:11:21,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:11:21,144 INFO L256 TraceCheckSpWp]: Trace formula consists of 26 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-12-02 12:11:21,145 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 12:11:21,164 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 12:11:21,164 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 12:11:21,164 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-12-02 12:11:21,164 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2137347932] [2024-12-02 12:11:21,164 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2137347932] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 12:11:21,164 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 12:11:21,164 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-12-02 12:11:21,164 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1224958881] [2024-12-02 12:11:21,165 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 12:11:21,165 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 12:11:21,165 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-12-02 12:11:21,165 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 12:11:21,165 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-12-02 12:11:21,165 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) [2024-12-02 12:11:21,190 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 12:11:21,190 INFO L93 Difference]: Finished difference Result 895 states and 1029 transitions. [2024-12-02 12:11:21,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-12-02 12:11:21,191 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 [2024-12-02 12:11:21,191 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 12:11:21,193 INFO L225 Difference]: With dead ends: 895 [2024-12-02 12:11:21,193 INFO L226 Difference]: Without dead ends: 895 [2024-12-02 12:11:21,193 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 [2024-12-02 12:11:21,194 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 [2024-12-02 12:11:21,194 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] [2024-12-02 12:11:21,195 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 895 states. [2024-12-02 12:11:21,204 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 895 to 895. [2024-12-02 12:11:21,204 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) [2024-12-02 12:11:21,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 895 states to 895 states and 1029 transitions. [2024-12-02 12:11:21,207 INFO L78 Accepts]: Start accepts. Automaton has 895 states and 1029 transitions. Word has length 9 [2024-12-02 12:11:21,207 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 12:11:21,207 INFO L471 AbstractCegarLoop]: Abstraction has 895 states and 1029 transitions. [2024-12-02 12:11:21,207 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) [2024-12-02 12:11:21,207 INFO L276 IsEmpty]: Start isEmpty. Operand 895 states and 1029 transitions. [2024-12-02 12:11:21,207 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2024-12-02 12:11:21,219 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 12:11:21,219 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 12:11:21,226 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b82ffcb-81a8-434a-9eba-3030712c62d6/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-12-02 12:11:21,420 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b82ffcb-81a8-434a-9eba-3030712c62d6/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 12:11:21,420 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)] === [2024-12-02 12:11:21,420 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 12:11:21,420 INFO L85 PathProgramCache]: Analyzing trace with hash 914551586, now seen corresponding path program 1 times [2024-12-02 12:11:21,421 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-12-02 12:11:21,421 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1102298636] [2024-12-02 12:11:21,421 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:11:21,421 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 12:11:21,421 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b82ffcb-81a8-434a-9eba-3030712c62d6/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 12:11:21,423 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b82ffcb-81a8-434a-9eba-3030712c62d6/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 12:11:21,424 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b82ffcb-81a8-434a-9eba-3030712c62d6/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-12-02 12:11:21,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:11:21,497 INFO L256 TraceCheckSpWp]: Trace formula consists of 36 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-12-02 12:11:21,498 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 12:11:21,520 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 12:11:21,520 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 12:11:21,520 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-12-02 12:11:21,520 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1102298636] [2024-12-02 12:11:21,520 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1102298636] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 12:11:21,520 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 12:11:21,520 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-12-02 12:11:21,520 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [374983350] [2024-12-02 12:11:21,520 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 12:11:21,520 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 12:11:21,520 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-12-02 12:11:21,521 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 12:11:21,521 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 12:11:21,521 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) [2024-12-02 12:11:22,569 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 12:11:22,569 INFO L93 Difference]: Finished difference Result 897 states and 1030 transitions. [2024-12-02 12:11:22,569 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 12:11:22,569 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 [2024-12-02 12:11:22,570 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 12:11:22,574 INFO L225 Difference]: With dead ends: 897 [2024-12-02 12:11:22,574 INFO L226 Difference]: Without dead ends: 887 [2024-12-02 12:11:22,574 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 [2024-12-02 12:11:22,575 INFO L435 NwaCegarLoop]: 802 mSDtfsCounter, 1 mSDsluCounter, 433 mSDsCounter, 0 mSdLazyCounter, 370 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s 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, 1.0s IncrementalHoareTripleChecker+Time [2024-12-02 12:11:22,575 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 1235 Invalid, 370 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 370 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-12-02 12:11:22,577 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 887 states. [2024-12-02 12:11:22,586 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 887 to 887. [2024-12-02 12:11:22,587 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) [2024-12-02 12:11:22,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 887 states to 887 states and 1020 transitions. [2024-12-02 12:11:22,590 INFO L78 Accepts]: Start accepts. Automaton has 887 states and 1020 transitions. Word has length 13 [2024-12-02 12:11:22,590 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 12:11:22,590 INFO L471 AbstractCegarLoop]: Abstraction has 887 states and 1020 transitions. [2024-12-02 12:11:22,590 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) [2024-12-02 12:11:22,590 INFO L276 IsEmpty]: Start isEmpty. Operand 887 states and 1020 transitions. [2024-12-02 12:11:22,591 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2024-12-02 12:11:22,591 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 12:11:22,591 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 12:11:22,602 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b82ffcb-81a8-434a-9eba-3030712c62d6/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-12-02 12:11:22,791 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b82ffcb-81a8-434a-9eba-3030712c62d6/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 12:11:22,791 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)] === [2024-12-02 12:11:22,792 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 12:11:22,792 INFO L85 PathProgramCache]: Analyzing trace with hash 247711511, now seen corresponding path program 1 times [2024-12-02 12:11:22,792 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-12-02 12:11:22,792 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [768322932] [2024-12-02 12:11:22,792 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:11:22,792 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 12:11:22,792 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b82ffcb-81a8-434a-9eba-3030712c62d6/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 12:11:22,794 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b82ffcb-81a8-434a-9eba-3030712c62d6/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 12:11:22,795 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b82ffcb-81a8-434a-9eba-3030712c62d6/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-12-02 12:11:22,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:11:22,904 INFO L256 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-12-02 12:11:22,905 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 12:11:22,910 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 [2024-12-02 12:11:22,955 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 12:11:22,955 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 12:11:22,955 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-12-02 12:11:22,955 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [768322932] [2024-12-02 12:11:22,955 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [768322932] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 12:11:22,955 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 12:11:22,956 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 12:11:22,956 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [405301176] [2024-12-02 12:11:22,956 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 12:11:22,956 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 12:11:22,956 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-12-02 12:11:22,956 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 12:11:22,956 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-12-02 12:11:22,957 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) [2024-12-02 12:11:24,642 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 12:11:24,642 INFO L93 Difference]: Finished difference Result 872 states and 982 transitions. [2024-12-02 12:11:24,642 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-12-02 12:11:24,642 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 [2024-12-02 12:11:24,642 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 12:11:24,644 INFO L225 Difference]: With dead ends: 872 [2024-12-02 12:11:24,644 INFO L226 Difference]: Without dead ends: 872 [2024-12-02 12:11:24,644 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 [2024-12-02 12:11:24,645 INFO L435 NwaCegarLoop]: 480 mSDtfsCounter, 564 mSDsluCounter, 426 mSDsCounter, 0 mSdLazyCounter, 861 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s 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, 1.6s IncrementalHoareTripleChecker+Time [2024-12-02 12:11:24,645 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [567 Valid, 906 Invalid, 889 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 861 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2024-12-02 12:11:24,647 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 872 states. [2024-12-02 12:11:24,654 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 872 to 864. [2024-12-02 12:11:24,655 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) [2024-12-02 12:11:24,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 864 states to 864 states and 974 transitions. [2024-12-02 12:11:24,657 INFO L78 Accepts]: Start accepts. Automaton has 864 states and 974 transitions. Word has length 16 [2024-12-02 12:11:24,657 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 12:11:24,658 INFO L471 AbstractCegarLoop]: Abstraction has 864 states and 974 transitions. [2024-12-02 12:11:24,658 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) [2024-12-02 12:11:24,658 INFO L276 IsEmpty]: Start isEmpty. Operand 864 states and 974 transitions. [2024-12-02 12:11:24,658 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2024-12-02 12:11:24,658 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 12:11:24,658 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 12:11:24,665 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b82ffcb-81a8-434a-9eba-3030712c62d6/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-12-02 12:11:24,858 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b82ffcb-81a8-434a-9eba-3030712c62d6/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 12:11:24,859 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)] === [2024-12-02 12:11:24,859 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 12:11:24,859 INFO L85 PathProgramCache]: Analyzing trace with hash 247711512, now seen corresponding path program 1 times [2024-12-02 12:11:24,859 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-12-02 12:11:24,859 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [448985152] [2024-12-02 12:11:24,859 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:11:24,859 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 12:11:24,860 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b82ffcb-81a8-434a-9eba-3030712c62d6/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 12:11:24,861 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b82ffcb-81a8-434a-9eba-3030712c62d6/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 12:11:24,862 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b82ffcb-81a8-434a-9eba-3030712c62d6/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-12-02 12:11:24,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:11:24,958 INFO L256 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-12-02 12:11:24,959 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 12:11:24,966 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 [2024-12-02 12:11:25,057 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 12:11:25,057 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 12:11:25,057 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-12-02 12:11:25,057 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [448985152] [2024-12-02 12:11:25,057 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [448985152] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 12:11:25,057 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 12:11:25,057 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 12:11:25,057 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [738212116] [2024-12-02 12:11:25,057 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 12:11:25,057 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 12:11:25,057 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-12-02 12:11:25,058 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 12:11:25,058 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-12-02 12:11:25,058 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) [2024-12-02 12:11:27,013 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 12:11:27,013 INFO L93 Difference]: Finished difference Result 1045 states and 1146 transitions. [2024-12-02 12:11:27,014 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-12-02 12:11:27,014 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 [2024-12-02 12:11:27,014 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 12:11:27,016 INFO L225 Difference]: With dead ends: 1045 [2024-12-02 12:11:27,016 INFO L226 Difference]: Without dead ends: 1045 [2024-12-02 12:11:27,016 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 [2024-12-02 12:11:27,017 INFO L435 NwaCegarLoop]: 747 mSDtfsCounter, 389 mSDsluCounter, 707 mSDsCounter, 0 mSdLazyCounter, 907 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s 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, 1.9s IncrementalHoareTripleChecker+Time [2024-12-02 12:11:27,017 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [389 Valid, 1454 Invalid, 929 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 907 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2024-12-02 12:11:27,018 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1045 states. [2024-12-02 12:11:27,026 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1045 to 980. [2024-12-02 12:11:27,027 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) [2024-12-02 12:11:27,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 980 states to 980 states and 1114 transitions. [2024-12-02 12:11:27,041 INFO L78 Accepts]: Start accepts. Automaton has 980 states and 1114 transitions. Word has length 16 [2024-12-02 12:11:27,041 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 12:11:27,041 INFO L471 AbstractCegarLoop]: Abstraction has 980 states and 1114 transitions. [2024-12-02 12:11:27,041 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) [2024-12-02 12:11:27,042 INFO L276 IsEmpty]: Start isEmpty. Operand 980 states and 1114 transitions. [2024-12-02 12:11:27,042 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2024-12-02 12:11:27,042 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 12:11:27,042 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] [2024-12-02 12:11:27,048 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b82ffcb-81a8-434a-9eba-3030712c62d6/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-12-02 12:11:27,243 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b82ffcb-81a8-434a-9eba-3030712c62d6/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 12:11:27,243 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)] === [2024-12-02 12:11:27,243 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 12:11:27,243 INFO L85 PathProgramCache]: Analyzing trace with hash 1598816529, now seen corresponding path program 1 times [2024-12-02 12:11:27,244 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-12-02 12:11:27,244 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1525481825] [2024-12-02 12:11:27,244 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:11:27,244 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 12:11:27,244 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b82ffcb-81a8-434a-9eba-3030712c62d6/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 12:11:27,245 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b82ffcb-81a8-434a-9eba-3030712c62d6/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 12:11:27,246 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b82ffcb-81a8-434a-9eba-3030712c62d6/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-12-02 12:11:27,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:11:27,382 INFO L256 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-12-02 12:11:27,385 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 12:11:27,390 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 [2024-12-02 12:11:27,604 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 12:11:27,604 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 12:11:28,075 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 12:11:28,075 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-12-02 12:11:28,076 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1525481825] [2024-12-02 12:11:28,076 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1525481825] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 12:11:28,076 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-12-02 12:11:28,076 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 7 [2024-12-02 12:11:28,076 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [158661373] [2024-12-02 12:11:28,076 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-12-02 12:11:28,076 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-12-02 12:11:28,076 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-12-02 12:11:28,077 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-12-02 12:11:28,077 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-12-02 12:11:28,077 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) [2024-12-02 12:11:33,871 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 12:11:33,871 INFO L93 Difference]: Finished difference Result 1407 states and 1642 transitions. [2024-12-02 12:11:33,872 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-12-02 12:11:33,872 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 [2024-12-02 12:11:33,872 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 12:11:33,877 INFO L225 Difference]: With dead ends: 1407 [2024-12-02 12:11:33,877 INFO L226 Difference]: Without dead ends: 1407 [2024-12-02 12:11:33,877 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=48, Invalid=84, Unknown=0, NotChecked=0, Total=132 [2024-12-02 12:11:33,878 INFO L435 NwaCegarLoop]: 775 mSDtfsCounter, 1524 mSDsluCounter, 1600 mSDsCounter, 0 mSdLazyCounter, 1872 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.0s 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, 5.6s IncrementalHoareTripleChecker+Time [2024-12-02 12:11:33,878 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1525 Valid, 2375 Invalid, 1899 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 1872 Invalid, 0 Unknown, 0 Unchecked, 5.6s Time] [2024-12-02 12:11:33,880 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1407 states. [2024-12-02 12:11:33,901 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1407 to 1146. [2024-12-02 12:11:33,903 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) [2024-12-02 12:11:33,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1146 states to 1146 states and 1348 transitions. [2024-12-02 12:11:33,907 INFO L78 Accepts]: Start accepts. Automaton has 1146 states and 1348 transitions. Word has length 35 [2024-12-02 12:11:33,907 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 12:11:33,907 INFO L471 AbstractCegarLoop]: Abstraction has 1146 states and 1348 transitions. [2024-12-02 12:11:33,908 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) [2024-12-02 12:11:33,908 INFO L276 IsEmpty]: Start isEmpty. Operand 1146 states and 1348 transitions. [2024-12-02 12:11:33,909 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2024-12-02 12:11:33,909 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 12:11:33,909 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] [2024-12-02 12:11:33,920 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b82ffcb-81a8-434a-9eba-3030712c62d6/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-12-02 12:11:34,109 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b82ffcb-81a8-434a-9eba-3030712c62d6/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 12:11:34,109 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)] === [2024-12-02 12:11:34,110 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 12:11:34,110 INFO L85 PathProgramCache]: Analyzing trace with hash 1225572340, now seen corresponding path program 1 times [2024-12-02 12:11:34,110 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-12-02 12:11:34,110 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1119878458] [2024-12-02 12:11:34,110 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:11:34,110 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 12:11:34,110 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b82ffcb-81a8-434a-9eba-3030712c62d6/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 12:11:34,112 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b82ffcb-81a8-434a-9eba-3030712c62d6/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 12:11:34,112 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b82ffcb-81a8-434a-9eba-3030712c62d6/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-12-02 12:11:34,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:11:34,287 INFO L256 TraceCheckSpWp]: Trace formula consists of 212 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-12-02 12:11:34,289 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 12:11:34,326 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 12:11:34,327 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 12:11:34,327 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-12-02 12:11:34,327 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1119878458] [2024-12-02 12:11:34,327 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1119878458] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 12:11:34,327 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 12:11:34,327 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-12-02 12:11:34,327 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1866760498] [2024-12-02 12:11:34,327 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 12:11:34,327 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 12:11:34,328 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-12-02 12:11:34,328 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 12:11:34,328 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-12-02 12:11:34,328 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) [2024-12-02 12:11:34,394 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 12:11:34,394 INFO L93 Difference]: Finished difference Result 831 states and 908 transitions. [2024-12-02 12:11:34,394 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-12-02 12:11:34,394 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 [2024-12-02 12:11:34,395 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 12:11:34,396 INFO L225 Difference]: With dead ends: 831 [2024-12-02 12:11:34,397 INFO L226 Difference]: Without dead ends: 831 [2024-12-02 12:11:34,397 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 [2024-12-02 12:11:34,397 INFO L435 NwaCegarLoop]: 718 mSDtfsCounter, 56 mSDsluCounter, 1363 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s 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 [2024-12-02 12:11:34,397 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] [2024-12-02 12:11:34,398 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 831 states. [2024-12-02 12:11:34,405 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 831 to 829. [2024-12-02 12:11:34,405 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) [2024-12-02 12:11:34,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 829 states to 829 states and 906 transitions. [2024-12-02 12:11:34,407 INFO L78 Accepts]: Start accepts. Automaton has 829 states and 906 transitions. Word has length 51 [2024-12-02 12:11:34,407 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 12:11:34,407 INFO L471 AbstractCegarLoop]: Abstraction has 829 states and 906 transitions. [2024-12-02 12:11:34,407 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) [2024-12-02 12:11:34,407 INFO L276 IsEmpty]: Start isEmpty. Operand 829 states and 906 transitions. [2024-12-02 12:11:34,408 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2024-12-02 12:11:34,408 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 12:11:34,408 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] [2024-12-02 12:11:34,417 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b82ffcb-81a8-434a-9eba-3030712c62d6/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-12-02 12:11:34,609 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b82ffcb-81a8-434a-9eba-3030712c62d6/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 12:11:34,609 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)] === [2024-12-02 12:11:34,609 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 12:11:34,609 INFO L85 PathProgramCache]: Analyzing trace with hash 1544369320, now seen corresponding path program 1 times [2024-12-02 12:11:34,610 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-12-02 12:11:34,610 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [916428889] [2024-12-02 12:11:34,610 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:11:34,610 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 12:11:34,610 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b82ffcb-81a8-434a-9eba-3030712c62d6/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 12:11:34,611 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b82ffcb-81a8-434a-9eba-3030712c62d6/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 12:11:34,612 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b82ffcb-81a8-434a-9eba-3030712c62d6/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-12-02 12:11:34,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:11:34,771 INFO L256 TraceCheckSpWp]: Trace formula consists of 236 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-12-02 12:11:34,774 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 12:11:34,781 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 [2024-12-02 12:11:35,187 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-12-02 12:11:35,188 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 [2024-12-02 12:11:35,205 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2024-12-02 12:11:35,205 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 [2024-12-02 12:11:35,213 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 12:11:35,213 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 12:11:35,213 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-12-02 12:11:35,213 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [916428889] [2024-12-02 12:11:35,213 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [916428889] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 12:11:35,213 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 12:11:35,213 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-12-02 12:11:35,213 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [920658343] [2024-12-02 12:11:35,213 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 12:11:35,214 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-12-02 12:11:35,214 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-12-02 12:11:35,214 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-12-02 12:11:35,214 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-12-02 12:11:35,214 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) [2024-12-02 12:11:36,999 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 12:11:36,999 INFO L93 Difference]: Finished difference Result 791 states and 868 transitions. [2024-12-02 12:11:37,000 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-12-02 12:11:37,000 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 [2024-12-02 12:11:37,000 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 12:11:37,001 INFO L225 Difference]: With dead ends: 791 [2024-12-02 12:11:37,001 INFO L226 Difference]: Without dead ends: 791 [2024-12-02 12:11:37,002 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 55 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2024-12-02 12:11:37,002 INFO L435 NwaCegarLoop]: 388 mSDtfsCounter, 456 mSDsluCounter, 287 mSDsCounter, 0 mSdLazyCounter, 911 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s 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, 1.7s IncrementalHoareTripleChecker+Time [2024-12-02 12:11:37,002 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [459 Valid, 675 Invalid, 953 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 911 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2024-12-02 12:11:37,003 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 791 states. [2024-12-02 12:11:37,018 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 791 to 754. [2024-12-02 12:11:37,019 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) [2024-12-02 12:11:37,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 754 states to 754 states and 794 transitions. [2024-12-02 12:11:37,021 INFO L78 Accepts]: Start accepts. Automaton has 754 states and 794 transitions. Word has length 59 [2024-12-02 12:11:37,021 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 12:11:37,021 INFO L471 AbstractCegarLoop]: Abstraction has 754 states and 794 transitions. [2024-12-02 12:11:37,021 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) [2024-12-02 12:11:37,021 INFO L276 IsEmpty]: Start isEmpty. Operand 754 states and 794 transitions. [2024-12-02 12:11:37,022 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2024-12-02 12:11:37,022 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 12:11:37,022 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] [2024-12-02 12:11:37,036 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b82ffcb-81a8-434a-9eba-3030712c62d6/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-12-02 12:11:37,223 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b82ffcb-81a8-434a-9eba-3030712c62d6/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 12:11:37,223 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)] === [2024-12-02 12:11:37,223 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 12:11:37,223 INFO L85 PathProgramCache]: Analyzing trace with hash 213920600, now seen corresponding path program 1 times [2024-12-02 12:11:37,224 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-12-02 12:11:37,224 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [65239793] [2024-12-02 12:11:37,224 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:11:37,224 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 12:11:37,224 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b82ffcb-81a8-434a-9eba-3030712c62d6/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 12:11:37,226 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b82ffcb-81a8-434a-9eba-3030712c62d6/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 12:11:37,227 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b82ffcb-81a8-434a-9eba-3030712c62d6/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-12-02 12:11:37,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:11:37,397 INFO L256 TraceCheckSpWp]: Trace formula consists of 263 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-12-02 12:11:37,400 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 12:11:37,409 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 [2024-12-02 12:11:37,424 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 [2024-12-02 12:11:37,431 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 [2024-12-02 12:11:37,469 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 [2024-12-02 12:11:37,490 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 12:11:37,490 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 12:11:37,490 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-12-02 12:11:37,491 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [65239793] [2024-12-02 12:11:37,491 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [65239793] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 12:11:37,491 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 12:11:37,491 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-12-02 12:11:37,491 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [335501696] [2024-12-02 12:11:37,491 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 12:11:37,491 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-12-02 12:11:37,491 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-12-02 12:11:37,492 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-12-02 12:11:37,492 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-12-02 12:11:37,492 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) [2024-12-02 12:11:39,318 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 12:11:39,318 INFO L93 Difference]: Finished difference Result 753 states and 793 transitions. [2024-12-02 12:11:39,319 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-12-02 12:11:39,319 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 [2024-12-02 12:11:39,319 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 12:11:39,321 INFO L225 Difference]: With dead ends: 753 [2024-12-02 12:11:39,321 INFO L226 Difference]: Without dead ends: 753 [2024-12-02 12:11:39,321 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 [2024-12-02 12:11:39,321 INFO L435 NwaCegarLoop]: 691 mSDtfsCounter, 2 mSDsluCounter, 1077 mSDsCounter, 0 mSdLazyCounter, 1003 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s 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, 1.8s IncrementalHoareTripleChecker+Time [2024-12-02 12:11:39,322 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 1768 Invalid, 1004 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1003 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2024-12-02 12:11:39,323 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 753 states. [2024-12-02 12:11:39,331 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 753 to 753. [2024-12-02 12:11:39,332 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) [2024-12-02 12:11:39,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 753 states to 753 states and 793 transitions. [2024-12-02 12:11:39,333 INFO L78 Accepts]: Start accepts. Automaton has 753 states and 793 transitions. Word has length 64 [2024-12-02 12:11:39,334 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 12:11:39,334 INFO L471 AbstractCegarLoop]: Abstraction has 753 states and 793 transitions. [2024-12-02 12:11:39,334 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) [2024-12-02 12:11:39,334 INFO L276 IsEmpty]: Start isEmpty. Operand 753 states and 793 transitions. [2024-12-02 12:11:39,335 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2024-12-02 12:11:39,335 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 12:11:39,335 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] [2024-12-02 12:11:39,347 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b82ffcb-81a8-434a-9eba-3030712c62d6/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2024-12-02 12:11:39,535 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b82ffcb-81a8-434a-9eba-3030712c62d6/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 12:11:39,535 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)] === [2024-12-02 12:11:39,536 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 12:11:39,536 INFO L85 PathProgramCache]: Analyzing trace with hash 213920599, now seen corresponding path program 1 times [2024-12-02 12:11:39,536 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-12-02 12:11:39,536 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [678635296] [2024-12-02 12:11:39,536 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:11:39,536 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 12:11:39,536 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b82ffcb-81a8-434a-9eba-3030712c62d6/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 12:11:39,538 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b82ffcb-81a8-434a-9eba-3030712c62d6/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 12:11:39,539 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b82ffcb-81a8-434a-9eba-3030712c62d6/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-12-02 12:11:39,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:11:39,715 INFO L256 TraceCheckSpWp]: Trace formula consists of 263 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-12-02 12:11:39,717 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 12:11:39,723 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 [2024-12-02 12:11:39,733 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 [2024-12-02 12:11:39,749 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 [2024-12-02 12:11:39,757 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 12:11:39,757 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 12:11:39,758 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-12-02 12:11:39,758 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [678635296] [2024-12-02 12:11:39,758 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [678635296] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 12:11:39,758 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 12:11:39,758 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-12-02 12:11:39,758 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [662877309] [2024-12-02 12:11:39,758 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 12:11:39,758 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-12-02 12:11:39,758 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-12-02 12:11:39,759 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-12-02 12:11:39,759 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-12-02 12:11:39,759 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) [2024-12-02 12:11:41,141 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 12:11:41,141 INFO L93 Difference]: Finished difference Result 752 states and 792 transitions. [2024-12-02 12:11:41,142 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-12-02 12:11:41,142 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 [2024-12-02 12:11:41,142 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 12:11:41,143 INFO L225 Difference]: With dead ends: 752 [2024-12-02 12:11:41,143 INFO L226 Difference]: Without dead ends: 752 [2024-12-02 12:11:41,143 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 [2024-12-02 12:11:41,144 INFO L435 NwaCegarLoop]: 691 mSDtfsCounter, 1 mSDsluCounter, 1052 mSDsCounter, 0 mSdLazyCounter, 1025 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s 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, 1.4s IncrementalHoareTripleChecker+Time [2024-12-02 12:11:41,144 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 1743 Invalid, 1026 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1025 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2024-12-02 12:11:41,145 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 752 states. [2024-12-02 12:11:41,149 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 752 to 752. [2024-12-02 12:11:41,150 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) [2024-12-02 12:11:41,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 752 states to 752 states and 792 transitions. [2024-12-02 12:11:41,151 INFO L78 Accepts]: Start accepts. Automaton has 752 states and 792 transitions. Word has length 64 [2024-12-02 12:11:41,151 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 12:11:41,151 INFO L471 AbstractCegarLoop]: Abstraction has 752 states and 792 transitions. [2024-12-02 12:11:41,152 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) [2024-12-02 12:11:41,152 INFO L276 IsEmpty]: Start isEmpty. Operand 752 states and 792 transitions. [2024-12-02 12:11:41,152 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2024-12-02 12:11:41,152 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 12:11:41,153 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] [2024-12-02 12:11:41,160 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b82ffcb-81a8-434a-9eba-3030712c62d6/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2024-12-02 12:11:41,353 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b82ffcb-81a8-434a-9eba-3030712c62d6/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 12:11:41,354 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)] === [2024-12-02 12:11:41,354 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 12:11:41,354 INFO L85 PathProgramCache]: Analyzing trace with hash -113414210, now seen corresponding path program 1 times [2024-12-02 12:11:41,354 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-12-02 12:11:41,355 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [775703679] [2024-12-02 12:11:41,355 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:11:41,355 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 12:11:41,355 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b82ffcb-81a8-434a-9eba-3030712c62d6/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 12:11:41,356 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b82ffcb-81a8-434a-9eba-3030712c62d6/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 12:11:41,357 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b82ffcb-81a8-434a-9eba-3030712c62d6/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-12-02 12:11:41,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:11:41,544 INFO L256 TraceCheckSpWp]: Trace formula consists of 289 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-12-02 12:11:41,547 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 12:11:41,552 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 [2024-12-02 12:11:41,619 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 [2024-12-02 12:11:41,632 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 12:11:41,632 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 12:11:41,632 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-12-02 12:11:41,632 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [775703679] [2024-12-02 12:11:41,632 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [775703679] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 12:11:41,632 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 12:11:41,632 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-12-02 12:11:41,632 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2052522251] [2024-12-02 12:11:41,632 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 12:11:41,632 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-12-02 12:11:41,633 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-12-02 12:11:41,633 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-12-02 12:11:41,633 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-12-02 12:11:41,633 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) [2024-12-02 12:11:43,478 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 12:11:43,478 INFO L93 Difference]: Finished difference Result 764 states and 807 transitions. [2024-12-02 12:11:43,478 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-12-02 12:11:43,478 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 [2024-12-02 12:11:43,478 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 12:11:43,483 INFO L225 Difference]: With dead ends: 764 [2024-12-02 12:11:43,483 INFO L226 Difference]: Without dead ends: 764 [2024-12-02 12:11:43,483 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 [2024-12-02 12:11:43,484 INFO L435 NwaCegarLoop]: 683 mSDtfsCounter, 6 mSDsluCounter, 1755 mSDsCounter, 0 mSdLazyCounter, 1029 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s 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, 1.8s IncrementalHoareTripleChecker+Time [2024-12-02 12:11:43,484 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 2438 Invalid, 1033 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 1029 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2024-12-02 12:11:43,485 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 764 states. [2024-12-02 12:11:43,493 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 764 to 758. [2024-12-02 12:11:43,494 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) [2024-12-02 12:11:43,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 758 states to 758 states and 802 transitions. [2024-12-02 12:11:43,495 INFO L78 Accepts]: Start accepts. Automaton has 758 states and 802 transitions. Word has length 72 [2024-12-02 12:11:43,496 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 12:11:43,496 INFO L471 AbstractCegarLoop]: Abstraction has 758 states and 802 transitions. [2024-12-02 12:11:43,496 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) [2024-12-02 12:11:43,496 INFO L276 IsEmpty]: Start isEmpty. Operand 758 states and 802 transitions. [2024-12-02 12:11:43,497 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2024-12-02 12:11:43,497 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 12:11:43,497 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] [2024-12-02 12:11:43,509 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b82ffcb-81a8-434a-9eba-3030712c62d6/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2024-12-02 12:11:43,697 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b82ffcb-81a8-434a-9eba-3030712c62d6/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 12:11:43,697 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)] === [2024-12-02 12:11:43,698 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 12:11:43,698 INFO L85 PathProgramCache]: Analyzing trace with hash -113414209, now seen corresponding path program 1 times [2024-12-02 12:11:43,698 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-12-02 12:11:43,698 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1094056853] [2024-12-02 12:11:43,698 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:11:43,698 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 12:11:43,698 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b82ffcb-81a8-434a-9eba-3030712c62d6/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 12:11:43,700 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b82ffcb-81a8-434a-9eba-3030712c62d6/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 12:11:43,700 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b82ffcb-81a8-434a-9eba-3030712c62d6/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-12-02 12:11:43,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:11:43,880 INFO L256 TraceCheckSpWp]: Trace formula consists of 289 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-12-02 12:11:43,881 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 12:11:43,895 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 12:11:43,895 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 12:11:43,895 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-12-02 12:11:43,895 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1094056853] [2024-12-02 12:11:43,895 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1094056853] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 12:11:43,896 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 12:11:43,896 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-12-02 12:11:43,896 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [73650928] [2024-12-02 12:11:43,896 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 12:11:43,896 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 12:11:43,896 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-12-02 12:11:43,896 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 12:11:43,896 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-12-02 12:11:43,897 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) [2024-12-02 12:11:43,932 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 12:11:43,932 INFO L93 Difference]: Finished difference Result 755 states and 796 transitions. [2024-12-02 12:11:43,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-12-02 12:11:43,932 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 [2024-12-02 12:11:43,933 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 12:11:43,935 INFO L225 Difference]: With dead ends: 755 [2024-12-02 12:11:43,935 INFO L226 Difference]: Without dead ends: 755 [2024-12-02 12:11:43,935 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 [2024-12-02 12:11:43,936 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 [2024-12-02 12:11:43,936 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] [2024-12-02 12:11:43,937 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 755 states. [2024-12-02 12:11:43,946 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 755 to 755. [2024-12-02 12:11:43,947 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) [2024-12-02 12:11:43,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 755 states to 755 states and 796 transitions. [2024-12-02 12:11:43,949 INFO L78 Accepts]: Start accepts. Automaton has 755 states and 796 transitions. Word has length 72 [2024-12-02 12:11:43,950 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 12:11:43,950 INFO L471 AbstractCegarLoop]: Abstraction has 755 states and 796 transitions. [2024-12-02 12:11:43,950 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) [2024-12-02 12:11:43,950 INFO L276 IsEmpty]: Start isEmpty. Operand 755 states and 796 transitions. [2024-12-02 12:11:43,950 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2024-12-02 12:11:43,951 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 12:11:43,951 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] [2024-12-02 12:11:43,962 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b82ffcb-81a8-434a-9eba-3030712c62d6/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2024-12-02 12:11:44,151 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b82ffcb-81a8-434a-9eba-3030712c62d6/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 12:11:44,151 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)] === [2024-12-02 12:11:44,152 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 12:11:44,152 INFO L85 PathProgramCache]: Analyzing trace with hash 2129670047, now seen corresponding path program 1 times [2024-12-02 12:11:44,152 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-12-02 12:11:44,152 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [708759099] [2024-12-02 12:11:44,152 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:11:44,152 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 12:11:44,152 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b82ffcb-81a8-434a-9eba-3030712c62d6/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 12:11:44,154 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b82ffcb-81a8-434a-9eba-3030712c62d6/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 12:11:44,155 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b82ffcb-81a8-434a-9eba-3030712c62d6/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2024-12-02 12:11:44,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:11:44,350 INFO L256 TraceCheckSpWp]: Trace formula consists of 300 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-12-02 12:11:44,352 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 12:11:44,373 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 12:11:44,373 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 12:11:44,431 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 12:11:44,431 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-12-02 12:11:44,432 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [708759099] [2024-12-02 12:11:44,432 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [708759099] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 12:11:44,432 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-12-02 12:11:44,432 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2024-12-02 12:11:44,432 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [830951202] [2024-12-02 12:11:44,432 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-12-02 12:11:44,432 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-12-02 12:11:44,432 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-12-02 12:11:44,432 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-12-02 12:11:44,432 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2024-12-02 12:11:44,433 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) [2024-12-02 12:11:44,562 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 12:11:44,562 INFO L93 Difference]: Finished difference Result 767 states and 813 transitions. [2024-12-02 12:11:44,563 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-12-02 12:11:44,563 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 [2024-12-02 12:11:44,563 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 12:11:44,565 INFO L225 Difference]: With dead ends: 767 [2024-12-02 12:11:44,565 INFO L226 Difference]: Without dead ends: 767 [2024-12-02 12:11:44,565 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 [2024-12-02 12:11:44,566 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, 0.1s IncrementalHoareTripleChecker+Time [2024-12-02 12:11:44,566 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 2071 Invalid, 59 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 52 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-02 12:11:44,566 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 767 states. [2024-12-02 12:11:44,572 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 767 to 765. [2024-12-02 12:11:44,573 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) [2024-12-02 12:11:44,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 765 states to 765 states and 811 transitions. [2024-12-02 12:11:44,574 INFO L78 Accepts]: Start accepts. Automaton has 765 states and 811 transitions. Word has length 73 [2024-12-02 12:11:44,575 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 12:11:44,575 INFO L471 AbstractCegarLoop]: Abstraction has 765 states and 811 transitions. [2024-12-02 12:11:44,575 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) [2024-12-02 12:11:44,575 INFO L276 IsEmpty]: Start isEmpty. Operand 765 states and 811 transitions. [2024-12-02 12:11:44,575 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2024-12-02 12:11:44,575 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 12:11:44,575 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] [2024-12-02 12:11:44,584 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b82ffcb-81a8-434a-9eba-3030712c62d6/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2024-12-02 12:11:44,776 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b82ffcb-81a8-434a-9eba-3030712c62d6/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 12:11:44,776 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)] === [2024-12-02 12:11:44,776 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 12:11:44,776 INFO L85 PathProgramCache]: Analyzing trace with hash 803135486, now seen corresponding path program 2 times [2024-12-02 12:11:44,777 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-12-02 12:11:44,777 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1474477271] [2024-12-02 12:11:44,777 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-12-02 12:11:44,777 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 12:11:44,777 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b82ffcb-81a8-434a-9eba-3030712c62d6/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 12:11:44,779 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b82ffcb-81a8-434a-9eba-3030712c62d6/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 12:11:44,780 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b82ffcb-81a8-434a-9eba-3030712c62d6/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2024-12-02 12:11:53,655 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-12-02 12:11:53,655 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 12:11:53,666 INFO L256 TraceCheckSpWp]: Trace formula consists of 333 conjuncts, 17 conjuncts are in the unsatisfiable core [2024-12-02 12:11:53,669 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 12:11:53,758 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2024-12-02 12:11:53,758 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 [2024-12-02 12:11:53,773 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 [2024-12-02 12:11:53,903 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-12-02 12:11:53,903 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 [2024-12-02 12:11:53,939 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 [2024-12-02 12:11:53,957 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-12-02 12:11:53,957 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 12:11:54,024 INFO L349 Elim1Store]: treesize reduction 7, result has 63.2 percent of original size [2024-12-02 12:11:54,024 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 [2024-12-02 12:11:54,034 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 [2024-12-02 12:11:54,036 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-12-02 12:11:54,036 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1474477271] [2024-12-02 12:11:54,036 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1474477271] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 12:11:54,036 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1146573732] [2024-12-02 12:11:54,037 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-12-02 12:11:54,037 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-12-02 12:11:54,037 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b82ffcb-81a8-434a-9eba-3030712c62d6/bin/uautomizer-verify-84ZbGMXZE1/cvc4 [2024-12-02 12:11:54,039 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b82ffcb-81a8-434a-9eba-3030712c62d6/bin/uautomizer-verify-84ZbGMXZE1/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-12-02 12:11:54,040 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b82ffcb-81a8-434a-9eba-3030712c62d6/bin/uautomizer-verify-84ZbGMXZE1/cvc4 --incremental --print-success --lang smt (19)] Waiting until timeout for monitored process [2024-12-02 12:11:54,714 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-12-02 12:11:54,715 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 12:11:54,736 INFO L256 TraceCheckSpWp]: Trace formula consists of 333 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-12-02 12:11:54,738 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 12:11:54,868 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 12:11:54,868 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 12:11:55,106 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 12:11:55,106 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1146573732] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 12:11:55,107 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 12:11:55,107 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 8, 8] total 24 [2024-12-02 12:11:55,107 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [369352882] [2024-12-02 12:11:55,107 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 12:11:55,107 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2024-12-02 12:11:55,107 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-12-02 12:11:55,107 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2024-12-02 12:11:55,107 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=513, Unknown=1, NotChecked=46, Total=650 [2024-12-02 12:11:55,108 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) [2024-12-02 12:12:00,683 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 12:12:00,683 INFO L93 Difference]: Finished difference Result 781 states and 834 transitions. [2024-12-02 12:12:00,684 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2024-12-02 12:12:00,684 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 [2024-12-02 12:12:00,684 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 12:12:00,686 INFO L225 Difference]: With dead ends: 781 [2024-12-02 12:12:00,686 INFO L226 Difference]: Without dead ends: 777 [2024-12-02 12:12:00,687 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 257 GetRequests, 206 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 472 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=413, Invalid=2242, Unknown=1, NotChecked=100, Total=2756 [2024-12-02 12:12:00,687 INFO L435 NwaCegarLoop]: 462 mSDtfsCounter, 467 mSDsluCounter, 6127 mSDsCounter, 0 mSdLazyCounter, 4277 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 471 SdHoareTripleChecker+Valid, 6589 SdHoareTripleChecker+Invalid, 4295 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 4277 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.8s IncrementalHoareTripleChecker+Time [2024-12-02 12:12:00,687 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [471 Valid, 6589 Invalid, 4295 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 4277 Invalid, 0 Unknown, 0 Unchecked, 4.8s Time] [2024-12-02 12:12:00,689 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 777 states. [2024-12-02 12:12:00,694 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 777 to 773. [2024-12-02 12:12:00,695 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) [2024-12-02 12:12:00,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 773 states to 773 states and 822 transitions. [2024-12-02 12:12:00,696 INFO L78 Accepts]: Start accepts. Automaton has 773 states and 822 transitions. Word has length 76 [2024-12-02 12:12:00,696 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 12:12:00,696 INFO L471 AbstractCegarLoop]: Abstraction has 773 states and 822 transitions. [2024-12-02 12:12:00,696 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) [2024-12-02 12:12:00,696 INFO L276 IsEmpty]: Start isEmpty. Operand 773 states and 822 transitions. [2024-12-02 12:12:00,697 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2024-12-02 12:12:00,697 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 12:12:00,697 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] [2024-12-02 12:12:00,703 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b82ffcb-81a8-434a-9eba-3030712c62d6/bin/uautomizer-verify-84ZbGMXZE1/cvc4 --incremental --print-success --lang smt (19)] Ended with exit code 0 [2024-12-02 12:12:00,914 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b82ffcb-81a8-434a-9eba-3030712c62d6/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2024-12-02 12:12:01,097 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b82ffcb-81a8-434a-9eba-3030712c62d6/bin/uautomizer-verify-84ZbGMXZE1/cvc4 --incremental --print-success --lang smt,18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b82ffcb-81a8-434a-9eba-3030712c62d6/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 12:12:01,098 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)] === [2024-12-02 12:12:01,098 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 12:12:01,098 INFO L85 PathProgramCache]: Analyzing trace with hash -1325921185, now seen corresponding path program 1 times [2024-12-02 12:12:01,098 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-12-02 12:12:01,099 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1412175125] [2024-12-02 12:12:01,099 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:12:01,099 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 12:12:01,099 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b82ffcb-81a8-434a-9eba-3030712c62d6/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 12:12:01,100 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b82ffcb-81a8-434a-9eba-3030712c62d6/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 12:12:01,102 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b82ffcb-81a8-434a-9eba-3030712c62d6/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2024-12-02 12:12:01,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:12:01,341 INFO L256 TraceCheckSpWp]: Trace formula consists of 399 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-12-02 12:12:01,343 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 12:12:01,511 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 12:12:01,511 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 12:12:01,954 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 12:12:01,954 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-12-02 12:12:01,954 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1412175125] [2024-12-02 12:12:01,955 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1412175125] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 12:12:01,955 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-12-02 12:12:01,955 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 26 [2024-12-02 12:12:01,955 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1832538002] [2024-12-02 12:12:01,955 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-12-02 12:12:01,955 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2024-12-02 12:12:01,955 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-12-02 12:12:01,956 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2024-12-02 12:12:01,956 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=193, Invalid=457, Unknown=0, NotChecked=0, Total=650 [2024-12-02 12:12:01,956 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) [2024-12-02 12:12:03,497 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 12:12:03,497 INFO L93 Difference]: Finished difference Result 797 states and 861 transitions. [2024-12-02 12:12:03,498 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2024-12-02 12:12:03,498 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 [2024-12-02 12:12:03,498 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 12:12:03,500 INFO L225 Difference]: With dead ends: 797 [2024-12-02 12:12:03,500 INFO L226 Difference]: Without dead ends: 791 [2024-12-02 12:12:03,500 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 183 GetRequests, 138 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 100 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=728, Invalid=1434, Unknown=0, NotChecked=0, Total=2162 [2024-12-02 12:12:03,500 INFO L435 NwaCegarLoop]: 691 mSDtfsCounter, 18 mSDsluCounter, 10308 mSDsCounter, 0 mSdLazyCounter, 598 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s 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, 0.7s IncrementalHoareTripleChecker+Time [2024-12-02 12:12:03,500 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 10999 Invalid, 611 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 598 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-12-02 12:12:03,501 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 791 states. [2024-12-02 12:12:03,505 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 791 to 791. [2024-12-02 12:12:03,506 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) [2024-12-02 12:12:03,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 791 states to 791 states and 845 transitions. [2024-12-02 12:12:03,507 INFO L78 Accepts]: Start accepts. Automaton has 791 states and 845 transitions. Word has length 82 [2024-12-02 12:12:03,507 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 12:12:03,507 INFO L471 AbstractCegarLoop]: Abstraction has 791 states and 845 transitions. [2024-12-02 12:12:03,508 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) [2024-12-02 12:12:03,508 INFO L276 IsEmpty]: Start isEmpty. Operand 791 states and 845 transitions. [2024-12-02 12:12:03,508 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2024-12-02 12:12:03,508 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 12:12:03,508 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] [2024-12-02 12:12:03,522 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b82ffcb-81a8-434a-9eba-3030712c62d6/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2024-12-02 12:12:03,708 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b82ffcb-81a8-434a-9eba-3030712c62d6/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 12:12:03,709 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)] === [2024-12-02 12:12:03,709 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 12:12:03,709 INFO L85 PathProgramCache]: Analyzing trace with hash 1034947871, now seen corresponding path program 2 times [2024-12-02 12:12:03,710 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-12-02 12:12:03,710 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [314307892] [2024-12-02 12:12:03,710 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-12-02 12:12:03,710 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 12:12:03,710 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b82ffcb-81a8-434a-9eba-3030712c62d6/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 12:12:03,711 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b82ffcb-81a8-434a-9eba-3030712c62d6/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 12:12:03,712 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b82ffcb-81a8-434a-9eba-3030712c62d6/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2024-12-02 12:12:12,707 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-12-02 12:12:12,708 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 12:12:12,723 INFO L256 TraceCheckSpWp]: Trace formula consists of 531 conjuncts, 64 conjuncts are in the unsatisfiable core [2024-12-02 12:12:12,730 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 12:12:12,821 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 [2024-12-02 12:12:12,832 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2024-12-02 12:12:12,832 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 [2024-12-02 12:12:12,858 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 [2024-12-02 12:12:12,870 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 [2024-12-02 12:12:12,966 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 [2024-12-02 12:12:12,971 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 [2024-12-02 12:12:13,374 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-12-02 12:12:13,375 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 [2024-12-02 12:12:13,385 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 [2024-12-02 12:12:13,421 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 [2024-12-02 12:12:13,427 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 [2024-12-02 12:12:13,448 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 231 trivial. 0 not checked. [2024-12-02 12:12:13,448 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 12:12:13,962 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-12-02 12:12:13,962 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [314307892] [2024-12-02 12:12:13,962 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [314307892] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 12:12:13,962 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [671322821] [2024-12-02 12:12:13,962 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-12-02 12:12:13,962 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-12-02 12:12:13,963 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b82ffcb-81a8-434a-9eba-3030712c62d6/bin/uautomizer-verify-84ZbGMXZE1/cvc4 [2024-12-02 12:12:13,964 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b82ffcb-81a8-434a-9eba-3030712c62d6/bin/uautomizer-verify-84ZbGMXZE1/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-12-02 12:12:13,965 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b82ffcb-81a8-434a-9eba-3030712c62d6/bin/uautomizer-verify-84ZbGMXZE1/cvc4 --incremental --print-success --lang smt (22)] Waiting until timeout for monitored process [2024-12-02 12:12:14,797 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-12-02 12:12:14,798 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 12:12:14,807 INFO L256 TraceCheckSpWp]: Trace formula consists of 531 conjuncts, 25 conjuncts are in the unsatisfiable core [2024-12-02 12:12:14,809 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 12:12:15,503 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 12:12:15,503 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 12:12:17,311 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 12:12:17,311 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [671322821] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 12:12:17,311 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 12:12:17,311 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 26, 26] total 58 [2024-12-02 12:12:17,311 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1340358345] [2024-12-02 12:12:17,311 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 12:12:17,311 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 58 states [2024-12-02 12:12:17,311 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-12-02 12:12:17,312 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 58 interpolants. [2024-12-02 12:12:17,313 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=700, Invalid=2954, Unknown=6, NotChecked=0, Total=3660 [2024-12-02 12:12:17,313 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) [2024-12-02 12:12:40,074 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 12:12:40,074 INFO L93 Difference]: Finished difference Result 834 states and 918 transitions. [2024-12-02 12:12:40,075 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 82 states. [2024-12-02 12:12:40,075 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 [2024-12-02 12:12:40,075 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 12:12:40,077 INFO L225 Difference]: With dead ends: 834 [2024-12-02 12:12:40,077 INFO L226 Difference]: Without dead ends: 826 [2024-12-02 12:12:40,079 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 361 GetRequests, 226 SyntacticMatches, 1 SemanticMatches, 134 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3140 ImplicationChecksByTransitivity, 9.1s TimeCoverageRelationStatistics Valid=3108, Invalid=15246, Unknown=6, NotChecked=0, Total=18360 [2024-12-02 12:12:40,080 INFO L435 NwaCegarLoop]: 462 mSDtfsCounter, 483 mSDsluCounter, 12419 mSDsCounter, 0 mSdLazyCounter, 10423 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 14.1s 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, 16.0s IncrementalHoareTripleChecker+Time [2024-12-02 12:12:40,080 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [486 Valid, 12881 Invalid, 10463 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [40 Valid, 10423 Invalid, 0 Unknown, 0 Unchecked, 16.0s Time] [2024-12-02 12:12:40,080 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 826 states. [2024-12-02 12:12:40,085 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 826 to 824. [2024-12-02 12:12:40,086 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) [2024-12-02 12:12:40,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 824 states to 824 states and 886 transitions. [2024-12-02 12:12:40,087 INFO L78 Accepts]: Start accepts. Automaton has 824 states and 886 transitions. Word has length 94 [2024-12-02 12:12:40,087 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 12:12:40,087 INFO L471 AbstractCegarLoop]: Abstraction has 824 states and 886 transitions. [2024-12-02 12:12:40,087 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) [2024-12-02 12:12:40,087 INFO L276 IsEmpty]: Start isEmpty. Operand 824 states and 886 transitions. [2024-12-02 12:12:40,088 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2024-12-02 12:12:40,088 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 12:12:40,088 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] [2024-12-02 12:12:40,112 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b82ffcb-81a8-434a-9eba-3030712c62d6/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Ended with exit code 0 [2024-12-02 12:12:40,294 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b82ffcb-81a8-434a-9eba-3030712c62d6/bin/uautomizer-verify-84ZbGMXZE1/cvc4 --incremental --print-success --lang smt (22)] Ended with exit code 0 [2024-12-02 12:12:40,489 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b82ffcb-81a8-434a-9eba-3030712c62d6/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b82ffcb-81a8-434a-9eba-3030712c62d6/bin/uautomizer-verify-84ZbGMXZE1/cvc4 --incremental --print-success --lang smt [2024-12-02 12:12:40,489 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)] === [2024-12-02 12:12:40,489 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 12:12:40,489 INFO L85 PathProgramCache]: Analyzing trace with hash -476960561, now seen corresponding path program 1 times [2024-12-02 12:12:40,490 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-12-02 12:12:40,490 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [271988957] [2024-12-02 12:12:40,490 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:12:40,490 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 12:12:40,490 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b82ffcb-81a8-434a-9eba-3030712c62d6/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 12:12:40,492 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b82ffcb-81a8-434a-9eba-3030712c62d6/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 12:12:40,492 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b82ffcb-81a8-434a-9eba-3030712c62d6/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2024-12-02 12:12:40,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:12:40,908 INFO L256 TraceCheckSpWp]: Trace formula consists of 793 conjuncts, 59 conjuncts are in the unsatisfiable core [2024-12-02 12:12:40,914 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 12:12:41,013 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2024-12-02 12:12:41,013 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2024-12-02 12:12:41,027 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 [2024-12-02 12:12:41,483 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-12-02 12:12:41,484 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 44 treesize of output 43 [2024-12-02 12:12:41,564 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-12-02 12:12:41,564 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 [2024-12-02 12:12:41,578 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 [2024-12-02 12:12:41,595 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 946 trivial. 0 not checked. [2024-12-02 12:12:41,595 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 12:12:41,669 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 [2024-12-02 12:12:42,050 INFO L349 Elim1Store]: treesize reduction 7, result has 77.4 percent of original size [2024-12-02 12:12:42,050 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 [2024-12-02 12:12:42,060 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 [2024-12-02 12:12:42,062 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-12-02 12:12:42,062 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [271988957] [2024-12-02 12:12:42,062 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [271988957] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 12:12:42,062 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [398114572] [2024-12-02 12:12:42,062 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:12:42,062 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-12-02 12:12:42,062 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b82ffcb-81a8-434a-9eba-3030712c62d6/bin/uautomizer-verify-84ZbGMXZE1/cvc4 [2024-12-02 12:12:42,064 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b82ffcb-81a8-434a-9eba-3030712c62d6/bin/uautomizer-verify-84ZbGMXZE1/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-12-02 12:12:42,065 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b82ffcb-81a8-434a-9eba-3030712c62d6/bin/uautomizer-verify-84ZbGMXZE1/cvc4 --incremental --print-success --lang smt (24)] Waiting until timeout for monitored process [2024-12-02 12:12:44,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:12:44,355 INFO L256 TraceCheckSpWp]: Trace formula consists of 793 conjuncts, 63 conjuncts are in the unsatisfiable core [2024-12-02 12:12:44,363 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 12:12:44,389 INFO L349 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2024-12-02 12:12:44,389 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 [2024-12-02 12:12:44,667 INFO L349 Elim1Store]: treesize reduction 54, result has 29.9 percent of original size [2024-12-02 12:12:44,667 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 [2024-12-02 12:12:44,728 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 [2024-12-02 12:12:44,916 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 [2024-12-02 12:12:46,161 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-12-02 12:12:46,161 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 54 treesize of output 51 [2024-12-02 12:12:46,359 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-12-02 12:12:46,359 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 [2024-12-02 12:12:46,394 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 [2024-12-02 12:12:46,445 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 946 trivial. 0 not checked. [2024-12-02 12:12:46,445 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 12:12:46,849 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 [2024-12-02 12:12:46,851 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [398114572] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 12:12:46,851 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-12-02 12:12:46,851 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 9] total 21 [2024-12-02 12:12:46,851 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1373749480] [2024-12-02 12:12:46,851 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-12-02 12:12:46,852 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2024-12-02 12:12:46,852 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-12-02 12:12:46,852 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2024-12-02 12:12:46,852 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=459, Unknown=10, NotChecked=138, Total=702 [2024-12-02 12:12:46,852 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) [2024-12-02 12:12:53,941 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 12:12:53,941 INFO L93 Difference]: Finished difference Result 1500 states and 1614 transitions. [2024-12-02 12:12:53,941 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2024-12-02 12:12:53,941 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 [2024-12-02 12:12:53,942 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 12:12:53,944 INFO L225 Difference]: With dead ends: 1500 [2024-12-02 12:12:53,944 INFO L226 Difference]: Without dead ends: 1500 [2024-12-02 12:12:53,944 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 265 GetRequests, 223 SyntacticMatches, 2 SemanticMatches, 40 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 364 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=215, Invalid=1265, Unknown=14, NotChecked=228, Total=1722 [2024-12-02 12:12:53,945 INFO L435 NwaCegarLoop]: 368 mSDtfsCounter, 1038 mSDsluCounter, 4663 mSDsCounter, 0 mSdLazyCounter, 5059 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.9s 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, 6.7s IncrementalHoareTripleChecker+Time [2024-12-02 12:12:53,945 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1044 Valid, 5031 Invalid, 5079 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 5059 Invalid, 0 Unknown, 0 Unchecked, 6.7s Time] [2024-12-02 12:12:53,946 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1500 states. [2024-12-02 12:12:53,955 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1500 to 823. [2024-12-02 12:12:53,955 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) [2024-12-02 12:12:53,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 823 states to 823 states and 885 transitions. [2024-12-02 12:12:53,956 INFO L78 Accepts]: Start accepts. Automaton has 823 states and 885 transitions. Word has length 119 [2024-12-02 12:12:53,956 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 12:12:53,956 INFO L471 AbstractCegarLoop]: Abstraction has 823 states and 885 transitions. [2024-12-02 12:12:53,956 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) [2024-12-02 12:12:53,956 INFO L276 IsEmpty]: Start isEmpty. Operand 823 states and 885 transitions. [2024-12-02 12:12:53,957 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2024-12-02 12:12:53,957 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 12:12:53,957 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] [2024-12-02 12:12:53,973 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b82ffcb-81a8-434a-9eba-3030712c62d6/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Ended with exit code 0 [2024-12-02 12:12:54,166 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b82ffcb-81a8-434a-9eba-3030712c62d6/bin/uautomizer-verify-84ZbGMXZE1/cvc4 --incremental --print-success --lang smt (24)] Ended with exit code 0 [2024-12-02 12:12:54,357 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b82ffcb-81a8-434a-9eba-3030712c62d6/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b82ffcb-81a8-434a-9eba-3030712c62d6/bin/uautomizer-verify-84ZbGMXZE1/cvc4 --incremental --print-success --lang smt [2024-12-02 12:12:54,357 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)] === [2024-12-02 12:12:54,358 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 12:12:54,358 INFO L85 PathProgramCache]: Analyzing trace with hash -476960560, now seen corresponding path program 1 times [2024-12-02 12:12:54,358 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-12-02 12:12:54,359 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1248851822] [2024-12-02 12:12:54,359 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:12:54,359 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 12:12:54,359 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b82ffcb-81a8-434a-9eba-3030712c62d6/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 12:12:54,360 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b82ffcb-81a8-434a-9eba-3030712c62d6/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 12:12:54,361 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b82ffcb-81a8-434a-9eba-3030712c62d6/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2024-12-02 12:12:54,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:12:54,761 INFO L256 TraceCheckSpWp]: Trace formula consists of 793 conjuncts, 111 conjuncts are in the unsatisfiable core [2024-12-02 12:12:54,771 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 12:12:54,841 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2024-12-02 12:12:54,841 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 [2024-12-02 12:12:54,846 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 [2024-12-02 12:12:54,870 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 [2024-12-02 12:12:54,877 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 [2024-12-02 12:12:54,971 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 [2024-12-02 12:12:54,974 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 [2024-12-02 12:12:55,546 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-12-02 12:12:55,547 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 [2024-12-02 12:12:55,557 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 [2024-12-02 12:12:55,644 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-12-02 12:12:55,644 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 [2024-12-02 12:12:55,651 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 [2024-12-02 12:12:55,680 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 [2024-12-02 12:12:55,686 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 [2024-12-02 12:12:55,708 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 946 trivial. 0 not checked. [2024-12-02 12:12:55,708 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 12:12:55,823 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 [2024-12-02 12:12:55,844 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 [2024-12-02 12:12:56,854 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 [2024-12-02 12:12:56,860 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-12-02 12:12:56,861 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1248851822] [2024-12-02 12:12:56,861 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1248851822] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 12:12:56,861 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [570294331] [2024-12-02 12:12:56,861 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:12:56,861 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-12-02 12:12:56,861 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b82ffcb-81a8-434a-9eba-3030712c62d6/bin/uautomizer-verify-84ZbGMXZE1/cvc4 [2024-12-02 12:12:56,862 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b82ffcb-81a8-434a-9eba-3030712c62d6/bin/uautomizer-verify-84ZbGMXZE1/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-12-02 12:12:56,863 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b82ffcb-81a8-434a-9eba-3030712c62d6/bin/uautomizer-verify-84ZbGMXZE1/cvc4 --incremental --print-success --lang smt (26)] Waiting until timeout for monitored process [2024-12-02 12:12:58,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:12:59,012 INFO L256 TraceCheckSpWp]: Trace formula consists of 793 conjuncts, 112 conjuncts are in the unsatisfiable core [2024-12-02 12:12:59,023 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 12:12:59,025 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 [2024-12-02 12:12:59,125 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2024-12-02 12:12:59,126 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2024-12-02 12:12:59,131 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 [2024-12-02 12:12:59,142 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 [2024-12-02 12:12:59,149 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 [2024-12-02 12:12:59,200 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 [2024-12-02 12:12:59,205 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 [2024-12-02 12:12:59,720 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-12-02 12:12:59,720 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 [2024-12-02 12:12:59,728 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 [2024-12-02 12:12:59,789 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-12-02 12:12:59,790 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 [2024-12-02 12:12:59,795 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 [2024-12-02 12:12:59,812 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 [2024-12-02 12:12:59,817 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 [2024-12-02 12:12:59,820 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 946 trivial. 0 not checked. [2024-12-02 12:12:59,820 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 12:12:59,862 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 [2024-12-02 12:12:59,881 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 [2024-12-02 12:13:00,940 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 [2024-12-02 12:13:00,947 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [570294331] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 12:13:00,947 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-12-02 12:13:00,947 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9] total 10 [2024-12-02 12:13:00,947 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [821588139] [2024-12-02 12:13:00,947 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-12-02 12:13:00,948 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-12-02 12:13:00,948 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-12-02 12:13:00,948 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-12-02 12:13:00,948 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=132, Unknown=6, NotChecked=162, Total=342 [2024-12-02 12:13:00,948 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) [2024-12-02 12:13:05,366 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 12:13:05,367 INFO L93 Difference]: Finished difference Result 822 states and 884 transitions. [2024-12-02 12:13:05,367 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-12-02 12:13:05,367 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 [2024-12-02 12:13:05,367 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 12:13:05,369 INFO L225 Difference]: With dead ends: 822 [2024-12-02 12:13:05,369 INFO L226 Difference]: Without dead ends: 822 [2024-12-02 12:13:05,369 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 256 GetRequests, 230 SyntacticMatches, 3 SemanticMatches, 23 ConstructedPredicates, 6 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=77, Invalid=283, Unknown=6, NotChecked=234, Total=600 [2024-12-02 12:13:05,370 INFO L435 NwaCegarLoop]: 462 mSDtfsCounter, 424 mSDsluCounter, 1861 mSDsCounter, 0 mSdLazyCounter, 2706 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.7s 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, 4.2s IncrementalHoareTripleChecker+Time [2024-12-02 12:13:05,370 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [426 Valid, 2323 Invalid, 2713 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 2706 Invalid, 0 Unknown, 0 Unchecked, 4.2s Time] [2024-12-02 12:13:05,371 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 822 states. [2024-12-02 12:13:05,378 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 822 to 822. [2024-12-02 12:13:05,378 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) [2024-12-02 12:13:05,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 822 states to 822 states and 884 transitions. [2024-12-02 12:13:05,380 INFO L78 Accepts]: Start accepts. Automaton has 822 states and 884 transitions. Word has length 119 [2024-12-02 12:13:05,380 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 12:13:05,380 INFO L471 AbstractCegarLoop]: Abstraction has 822 states and 884 transitions. [2024-12-02 12:13:05,380 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) [2024-12-02 12:13:05,380 INFO L276 IsEmpty]: Start isEmpty. Operand 822 states and 884 transitions. [2024-12-02 12:13:05,381 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2024-12-02 12:13:05,381 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 12:13:05,381 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] [2024-12-02 12:13:05,392 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b82ffcb-81a8-434a-9eba-3030712c62d6/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Ended with exit code 0 [2024-12-02 12:13:05,590 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b82ffcb-81a8-434a-9eba-3030712c62d6/bin/uautomizer-verify-84ZbGMXZE1/cvc4 --incremental --print-success --lang smt (26)] Ended with exit code 0 [2024-12-02 12:13:05,781 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b82ffcb-81a8-434a-9eba-3030712c62d6/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b82ffcb-81a8-434a-9eba-3030712c62d6/bin/uautomizer-verify-84ZbGMXZE1/cvc4 --incremental --print-success --lang smt [2024-12-02 12:13:05,782 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)] === [2024-12-02 12:13:05,782 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 12:13:05,782 INFO L85 PathProgramCache]: Analyzing trace with hash -1379954683, now seen corresponding path program 1 times [2024-12-02 12:13:05,782 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-12-02 12:13:05,782 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1866979025] [2024-12-02 12:13:05,782 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:13:05,783 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 12:13:05,783 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b82ffcb-81a8-434a-9eba-3030712c62d6/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 12:13:05,784 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b82ffcb-81a8-434a-9eba-3030712c62d6/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 12:13:05,785 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b82ffcb-81a8-434a-9eba-3030712c62d6/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2024-12-02 12:13:06,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:13:06,215 INFO L256 TraceCheckSpWp]: Trace formula consists of 822 conjuncts, 61 conjuncts are in the unsatisfiable core [2024-12-02 12:13:06,221 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 12:13:06,307 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2024-12-02 12:13:06,307 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 [2024-12-02 12:13:06,320 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2024-12-02 12:13:06,728 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-12-02 12:13:06,728 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 [2024-12-02 12:13:06,811 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-12-02 12:13:06,811 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 [2024-12-02 12:13:06,871 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-12-02 12:13:06,871 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 [2024-12-02 12:13:06,883 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 [2024-12-02 12:13:06,902 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 946 trivial. 0 not checked. [2024-12-02 12:13:06,902 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 12:13:06,977 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 [2024-12-02 12:13:06,989 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 [2024-12-02 12:13:06,997 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 [2024-12-02 12:13:07,332 INFO L349 Elim1Store]: treesize reduction 7, result has 87.3 percent of original size [2024-12-02 12:13:07,332 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 [2024-12-02 12:13:07,341 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 [2024-12-02 12:13:07,343 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-12-02 12:13:07,343 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1866979025] [2024-12-02 12:13:07,343 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1866979025] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 12:13:07,343 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1592830102] [2024-12-02 12:13:07,343 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:13:07,343 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-12-02 12:13:07,343 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b82ffcb-81a8-434a-9eba-3030712c62d6/bin/uautomizer-verify-84ZbGMXZE1/cvc4 [2024-12-02 12:13:07,345 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b82ffcb-81a8-434a-9eba-3030712c62d6/bin/uautomizer-verify-84ZbGMXZE1/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-12-02 12:13:07,345 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b82ffcb-81a8-434a-9eba-3030712c62d6/bin/uautomizer-verify-84ZbGMXZE1/cvc4 --incremental --print-success --lang smt (28)] Waiting until timeout for monitored process [2024-12-02 12:13:16,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:13:16,718 INFO L256 TraceCheckSpWp]: Trace formula consists of 822 conjuncts, 66 conjuncts are in the unsatisfiable core [2024-12-02 12:13:16,726 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 12:13:16,761 INFO L349 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2024-12-02 12:13:16,762 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 [2024-12-02 12:13:17,029 INFO L349 Elim1Store]: treesize reduction 54, result has 29.9 percent of original size [2024-12-02 12:13:17,029 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 [2024-12-02 12:13:17,079 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 [2024-12-02 12:13:17,234 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 [2024-12-02 12:13:18,323 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-12-02 12:13:18,323 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 [2024-12-02 12:13:18,468 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-12-02 12:13:18,468 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 [2024-12-02 12:13:18,590 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-12-02 12:13:18,590 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 [2024-12-02 12:13:18,639 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 [2024-12-02 12:13:18,697 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 946 trivial. 0 not checked. [2024-12-02 12:13:18,698 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 12:13:18,766 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 [2024-12-02 12:13:18,776 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 [2024-12-02 12:13:19,085 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 [2024-12-02 12:13:19,088 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1592830102] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 12:13:19,088 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-12-02 12:13:19,088 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 10] total 23 [2024-12-02 12:13:19,088 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1514517789] [2024-12-02 12:13:19,088 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-12-02 12:13:19,088 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2024-12-02 12:13:19,089 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-12-02 12:13:19,089 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2024-12-02 12:13:19,089 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=118, Invalid=546, Unknown=14, NotChecked=378, Total=1056 [2024-12-02 12:13:19,089 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) [2024-12-02 12:13:27,171 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 12:13:27,171 INFO L93 Difference]: Finished difference Result 1496 states and 1610 transitions. [2024-12-02 12:13:27,172 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2024-12-02 12:13:27,172 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 [2024-12-02 12:13:27,172 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 12:13:27,174 INFO L225 Difference]: With dead ends: 1496 [2024-12-02 12:13:27,174 INFO L226 Difference]: Without dead ends: 1496 [2024-12-02 12:13:27,175 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 278 GetRequests, 229 SyntacticMatches, 2 SemanticMatches, 47 ConstructedPredicates, 7 IntricatePredicates, 0 DeprecatedPredicates, 434 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=250, Invalid=1482, Unknown=18, NotChecked=602, Total=2352 [2024-12-02 12:13:27,176 INFO L435 NwaCegarLoop]: 367 mSDtfsCounter, 1348 mSDsluCounter, 5127 mSDsCounter, 0 mSdLazyCounter, 5568 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1354 SdHoareTripleChecker+Valid, 5494 SdHoareTripleChecker+Invalid, 5593 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 5568 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.6s IncrementalHoareTripleChecker+Time [2024-12-02 12:13:27,176 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1354 Valid, 5494 Invalid, 5593 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 5568 Invalid, 0 Unknown, 0 Unchecked, 7.6s Time] [2024-12-02 12:13:27,177 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1496 states. [2024-12-02 12:13:27,186 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1496 to 821. [2024-12-02 12:13:27,187 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) [2024-12-02 12:13:27,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 821 states to 821 states and 883 transitions. [2024-12-02 12:13:27,188 INFO L78 Accepts]: Start accepts. Automaton has 821 states and 883 transitions. Word has length 122 [2024-12-02 12:13:27,188 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 12:13:27,188 INFO L471 AbstractCegarLoop]: Abstraction has 821 states and 883 transitions. [2024-12-02 12:13:27,188 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) [2024-12-02 12:13:27,188 INFO L276 IsEmpty]: Start isEmpty. Operand 821 states and 883 transitions. [2024-12-02 12:13:27,189 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2024-12-02 12:13:27,189 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 12:13:27,189 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] [2024-12-02 12:13:27,201 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b82ffcb-81a8-434a-9eba-3030712c62d6/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Ended with exit code 0 [2024-12-02 12:13:27,404 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b82ffcb-81a8-434a-9eba-3030712c62d6/bin/uautomizer-verify-84ZbGMXZE1/cvc4 --incremental --print-success --lang smt (28)] Ended with exit code 0 [2024-12-02 12:13:27,590 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b82ffcb-81a8-434a-9eba-3030712c62d6/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b82ffcb-81a8-434a-9eba-3030712c62d6/bin/uautomizer-verify-84ZbGMXZE1/cvc4 --incremental --print-success --lang smt [2024-12-02 12:13:27,590 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)] === [2024-12-02 12:13:27,590 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 12:13:27,590 INFO L85 PathProgramCache]: Analyzing trace with hash -1379954682, now seen corresponding path program 1 times [2024-12-02 12:13:27,591 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-12-02 12:13:27,591 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [268199617] [2024-12-02 12:13:27,591 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:13:27,591 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 12:13:27,591 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b82ffcb-81a8-434a-9eba-3030712c62d6/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 12:13:27,592 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b82ffcb-81a8-434a-9eba-3030712c62d6/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 12:13:27,593 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b82ffcb-81a8-434a-9eba-3030712c62d6/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2024-12-02 12:13:28,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:13:28,072 INFO L256 TraceCheckSpWp]: Trace formula consists of 822 conjuncts, 114 conjuncts are in the unsatisfiable core [2024-12-02 12:13:28,080 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 12:13:28,159 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 [2024-12-02 12:13:28,169 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2024-12-02 12:13:28,169 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 [2024-12-02 12:13:28,192 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 [2024-12-02 12:13:28,202 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 [2024-12-02 12:13:28,287 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 [2024-12-02 12:13:28,291 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 [2024-12-02 12:13:28,783 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-12-02 12:13:28,783 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 [2024-12-02 12:13:28,789 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 [2024-12-02 12:13:28,868 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-12-02 12:13:28,868 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 [2024-12-02 12:13:28,875 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 [2024-12-02 12:13:28,952 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-12-02 12:13:28,953 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 [2024-12-02 12:13:28,959 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 [2024-12-02 12:13:28,978 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 [2024-12-02 12:13:28,985 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 [2024-12-02 12:13:29,006 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 946 trivial. 0 not checked. [2024-12-02 12:13:29,006 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 12:13:29,112 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 [2024-12-02 12:13:29,131 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 [2024-12-02 12:13:29,199 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 [2024-12-02 12:13:34,551 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-12-02 12:13:34,552 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [268199617] [2024-12-02 12:13:34,552 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [268199617] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 12:13:34,552 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1470697834] [2024-12-02 12:13:34,552 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:13:34,552 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-12-02 12:13:34,552 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b82ffcb-81a8-434a-9eba-3030712c62d6/bin/uautomizer-verify-84ZbGMXZE1/cvc4 [2024-12-02 12:13:34,554 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b82ffcb-81a8-434a-9eba-3030712c62d6/bin/uautomizer-verify-84ZbGMXZE1/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-12-02 12:13:34,554 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b82ffcb-81a8-434a-9eba-3030712c62d6/bin/uautomizer-verify-84ZbGMXZE1/cvc4 --incremental --print-success --lang smt (30)] Waiting until timeout for monitored process [2024-12-02 12:13:44,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:13:44,868 INFO L256 TraceCheckSpWp]: Trace formula consists of 822 conjuncts, 117 conjuncts are in the unsatisfiable core [2024-12-02 12:13:44,879 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 12:13:44,901 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 [2024-12-02 12:13:45,967 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2024-12-02 12:13:45,968 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 [2024-12-02 12:13:46,006 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 [2024-12-02 12:13:46,067 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 [2024-12-02 12:13:46,088 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 [2024-12-02 12:13:46,425 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 [2024-12-02 12:13:46,445 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 [2024-12-02 12:13:50,279 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-12-02 12:13:50,279 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 [2024-12-02 12:13:50,339 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 [2024-12-02 12:13:50,699 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-12-02 12:13:50,699 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 [2024-12-02 12:13:50,741 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 [2024-12-02 12:13:51,031 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-12-02 12:13:51,032 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 [2024-12-02 12:13:51,072 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 [2024-12-02 12:13:51,209 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 [2024-12-02 12:13:51,247 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 [2024-12-02 12:13:51,248 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 946 trivial. 0 not checked. [2024-12-02 12:13:51,248 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 12:13:51,451 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 [2024-12-02 12:13:51,526 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 [2024-12-02 12:13:51,669 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 [2024-12-02 12:14:02,472 WARN L286 SmtUtils]: Spent 5.12s 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) [2024-12-02 12:14:03,353 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 [2024-12-02 12:14:03,384 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1470697834] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 12:14:03,385 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-12-02 12:14:03,385 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10] total 11 [2024-12-02 12:14:03,385 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1793844383] [2024-12-02 12:14:03,385 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-12-02 12:14:03,385 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-12-02 12:14:03,385 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-12-02 12:14:03,386 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-12-02 12:14:03,386 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=207, Unknown=30, NotChecked=252, Total=552 [2024-12-02 12:14:03,386 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) [2024-12-02 12:15:33,988 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 12:15:33,988 INFO L93 Difference]: Finished difference Result 820 states and 882 transitions. [2024-12-02 12:15:33,989 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-12-02 12:15:33,989 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 [2024-12-02 12:15:33,990 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 12:15:33,991 INFO L225 Difference]: With dead ends: 820 [2024-12-02 12:15:33,991 INFO L226 Difference]: Without dead ends: 820 [2024-12-02 12:15:33,991 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 269 GetRequests, 237 SyntacticMatches, 3 SemanticMatches, 29 ConstructedPredicates, 7 IntricatePredicates, 0 DeprecatedPredicates, 77 ImplicationChecksByTransitivity, 15.2s TimeCoverageRelationStatistics Valid=116, Invalid=432, Unknown=32, NotChecked=350, Total=930 [2024-12-02 12:15:33,992 INFO L435 NwaCegarLoop]: 461 mSDtfsCounter, 422 mSDsluCounter, 2401 mSDsCounter, 0 mSdLazyCounter, 3528 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 84.6s 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, 86.0s IncrementalHoareTripleChecker+Time [2024-12-02 12:15:33,992 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [424 Valid, 2862 Invalid, 3535 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 3528 Invalid, 0 Unknown, 0 Unchecked, 86.0s Time] [2024-12-02 12:15:33,993 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 820 states. [2024-12-02 12:15:33,997 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 820 to 820. [2024-12-02 12:15:33,998 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) [2024-12-02 12:15:33,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 820 states to 820 states and 882 transitions. [2024-12-02 12:15:33,999 INFO L78 Accepts]: Start accepts. Automaton has 820 states and 882 transitions. Word has length 122 [2024-12-02 12:15:33,999 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 12:15:33,999 INFO L471 AbstractCegarLoop]: Abstraction has 820 states and 882 transitions. [2024-12-02 12:15:33,999 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) [2024-12-02 12:15:33,999 INFO L276 IsEmpty]: Start isEmpty. Operand 820 states and 882 transitions. [2024-12-02 12:15:34,000 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2024-12-02 12:15:34,000 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 12:15:34,000 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] [2024-12-02 12:15:34,014 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b82ffcb-81a8-434a-9eba-3030712c62d6/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Forceful destruction successful, exit code 0 [2024-12-02 12:15:34,215 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b82ffcb-81a8-434a-9eba-3030712c62d6/bin/uautomizer-verify-84ZbGMXZE1/cvc4 --incremental --print-success --lang smt (30)] Ended with exit code 0 [2024-12-02 12:15:34,400 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b82ffcb-81a8-434a-9eba-3030712c62d6/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,30 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b82ffcb-81a8-434a-9eba-3030712c62d6/bin/uautomizer-verify-84ZbGMXZE1/cvc4 --incremental --print-success --lang smt [2024-12-02 12:15:34,401 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)] === [2024-12-02 12:15:34,401 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 12:15:34,401 INFO L85 PathProgramCache]: Analyzing trace with hash 1197305910, now seen corresponding path program 1 times [2024-12-02 12:15:34,401 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-12-02 12:15:34,401 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1248790515] [2024-12-02 12:15:34,402 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:15:34,402 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 12:15:34,402 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b82ffcb-81a8-434a-9eba-3030712c62d6/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 12:15:34,403 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b82ffcb-81a8-434a-9eba-3030712c62d6/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 12:15:34,404 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b82ffcb-81a8-434a-9eba-3030712c62d6/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2024-12-02 12:15:34,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:15:34,918 INFO L256 TraceCheckSpWp]: Trace formula consists of 851 conjuncts, 63 conjuncts are in the unsatisfiable core [2024-12-02 12:15:34,924 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 12:15:37,381 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2024-12-02 12:15:37,381 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 [2024-12-02 12:15:37,708 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 [2024-12-02 12:15:42,713 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-12-02 12:15:42,714 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 [2024-12-02 12:15:43,630 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-12-02 12:15:43,630 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 [2024-12-02 12:15:44,593 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-12-02 12:15:44,593 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 [2024-12-02 12:15:45,580 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-12-02 12:15:45,581 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 [2024-12-02 12:15:46,378 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 [2024-12-02 12:15:46,883 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 946 trivial. 0 not checked. [2024-12-02 12:15:46,883 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 12:15:47,722 INFO L349 Elim1Store]: treesize reduction 7, result has 63.2 percent of original size [2024-12-02 12:15:47,723 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 [2024-12-02 12:15:48,714 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 [2024-12-02 12:15:48,870 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 [2024-12-02 12:15:48,980 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 [2024-12-02 12:15:49,141 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 [2024-12-02 12:15:49,252 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 [2024-12-02 12:15:52,060 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 [2024-12-02 12:15:52,085 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-12-02 12:15:52,085 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1248790515] [2024-12-02 12:15:52,085 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1248790515] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 12:15:52,085 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1804598721] [2024-12-02 12:15:52,085 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:15:52,085 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-12-02 12:15:52,085 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b82ffcb-81a8-434a-9eba-3030712c62d6/bin/uautomizer-verify-84ZbGMXZE1/cvc4 [2024-12-02 12:15:52,087 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b82ffcb-81a8-434a-9eba-3030712c62d6/bin/uautomizer-verify-84ZbGMXZE1/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-12-02 12:15:52,088 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b82ffcb-81a8-434a-9eba-3030712c62d6/bin/uautomizer-verify-84ZbGMXZE1/cvc4 --incremental --print-success --lang smt (32)] Waiting until timeout for monitored process [2024-12-02 12:16:04,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:16:04,732 INFO L256 TraceCheckSpWp]: Trace formula consists of 851 conjuncts, 68 conjuncts are in the unsatisfiable core [2024-12-02 12:16:04,739 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 12:16:05,748 INFO L349 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2024-12-02 12:16:05,748 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 [2024-12-02 12:16:12,282 INFO L349 Elim1Store]: treesize reduction 54, result has 29.9 percent of original size [2024-12-02 12:16:12,282 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 [2024-12-02 12:16:13,471 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 [2024-12-02 12:16:16,493 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 [2024-12-02 12:16:33,625 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-12-02 12:16:33,625 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 [2024-12-02 12:16:36,466 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-12-02 12:16:36,466 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 54 treesize of output 51 [2024-12-02 12:16:38,490 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-12-02 12:16:38,490 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 54 treesize of output 51 [2024-12-02 12:16:40,608 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-12-02 12:16:40,608 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 [2024-12-02 12:16:41,142 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 [2024-12-02 12:16:42,294 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 946 trivial. 0 not checked. [2024-12-02 12:16:42,294 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 12:16:43,784 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 [2024-12-02 12:16:43,941 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 [2024-12-02 12:16:44,049 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 [2024-12-02 12:16:44,208 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 [2024-12-02 12:16:44,321 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 [2024-12-02 12:16:47,158 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 [2024-12-02 12:16:47,186 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1804598721] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 12:16:47,186 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-12-02 12:16:47,186 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 11] total 24 [2024-12-02 12:16:47,186 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2083889713] [2024-12-02 12:16:47,186 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-12-02 12:16:47,187 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2024-12-02 12:16:47,187 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-12-02 12:16:47,187 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2024-12-02 12:16:47,187 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=139, Invalid=640, Unknown=25, NotChecked=756, Total=1560 [2024-12-02 12:16:47,187 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) [2024-12-02 12:18:46,800 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 12:18:46,800 INFO L93 Difference]: Finished difference Result 1492 states and 1606 transitions. [2024-12-02 12:18:46,800 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2024-12-02 12:18:46,801 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 [2024-12-02 12:18:46,801 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 12:18:46,803 INFO L225 Difference]: With dead ends: 1492 [2024-12-02 12:18:46,803 INFO L226 Difference]: Without dead ends: 1492 [2024-12-02 12:18:46,804 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 287 GetRequests, 235 SyntacticMatches, 1 SemanticMatches, 51 ConstructedPredicates, 12 IntricatePredicates, 0 DeprecatedPredicates, 381 ImplicationChecksByTransitivity, 23.5s TimeCoverageRelationStatistics Valid=248, Invalid=1410, Unknown=30, NotChecked=1068, Total=2756 [2024-12-02 12:18:46,804 INFO L435 NwaCegarLoop]: 367 mSDtfsCounter, 1030 mSDsluCounter, 4250 mSDsCounter, 0 mSdLazyCounter, 4693 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 111.6s 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, 113.2s IncrementalHoareTripleChecker+Time [2024-12-02 12:18:46,804 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1036 Valid, 4617 Invalid, 4718 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [25 Valid, 4693 Invalid, 0 Unknown, 0 Unchecked, 113.2s Time] [2024-12-02 12:18:46,805 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1492 states. [2024-12-02 12:18:46,812 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1492 to 819. [2024-12-02 12:18:46,812 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) [2024-12-02 12:18:46,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 819 states to 819 states and 881 transitions. [2024-12-02 12:18:46,813 INFO L78 Accepts]: Start accepts. Automaton has 819 states and 881 transitions. Word has length 125 [2024-12-02 12:18:46,814 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 12:18:46,814 INFO L471 AbstractCegarLoop]: Abstraction has 819 states and 881 transitions. [2024-12-02 12:18:46,814 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) [2024-12-02 12:18:46,814 INFO L276 IsEmpty]: Start isEmpty. Operand 819 states and 881 transitions. [2024-12-02 12:18:46,814 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2024-12-02 12:18:46,814 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 12:18:46,814 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] [2024-12-02 12:18:46,828 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b82ffcb-81a8-434a-9eba-3030712c62d6/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Forceful destruction successful, exit code 0 [2024-12-02 12:18:47,031 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b82ffcb-81a8-434a-9eba-3030712c62d6/bin/uautomizer-verify-84ZbGMXZE1/cvc4 --incremental --print-success --lang smt (32)] Ended with exit code 0 [2024-12-02 12:18:47,215 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b82ffcb-81a8-434a-9eba-3030712c62d6/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,32 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b82ffcb-81a8-434a-9eba-3030712c62d6/bin/uautomizer-verify-84ZbGMXZE1/cvc4 --incremental --print-success --lang smt [2024-12-02 12:18:47,215 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)] === [2024-12-02 12:18:47,215 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 12:18:47,215 INFO L85 PathProgramCache]: Analyzing trace with hash 1197305911, now seen corresponding path program 1 times [2024-12-02 12:18:47,216 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-12-02 12:18:47,216 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1505414203] [2024-12-02 12:18:47,216 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:18:47,216 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 12:18:47,216 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b82ffcb-81a8-434a-9eba-3030712c62d6/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 12:18:47,217 INFO L229 MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b82ffcb-81a8-434a-9eba-3030712c62d6/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 12:18:47,218 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b82ffcb-81a8-434a-9eba-3030712c62d6/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Waiting until timeout for monitored process [2024-12-02 12:18:47,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:18:47,770 INFO L256 TraceCheckSpWp]: Trace formula consists of 851 conjuncts, 117 conjuncts are in the unsatisfiable core [2024-12-02 12:18:47,779 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 12:18:50,165 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 [2024-12-02 12:18:50,423 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2024-12-02 12:18:50,423 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 [2024-12-02 12:18:50,868 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 [2024-12-02 12:18:50,918 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 [2024-12-02 12:18:52,518 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 [2024-12-02 12:18:52,567 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 [2024-12-02 12:19:02,517 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-12-02 12:19:02,517 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 [2024-12-02 12:19:02,614 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 [2024-12-02 12:19:04,103 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-12-02 12:19:04,103 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 [2024-12-02 12:19:04,199 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 [2024-12-02 12:19:05,509 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-12-02 12:19:05,510 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 [2024-12-02 12:19:05,606 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 [2024-12-02 12:19:06,939 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-12-02 12:19:06,939 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 [2024-12-02 12:19:07,034 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 [2024-12-02 12:19:07,374 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 [2024-12-02 12:19:07,481 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 [2024-12-02 12:19:07,973 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 946 trivial. 0 not checked. [2024-12-02 12:19:07,973 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 12:19:09,476 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 [2024-12-02 12:19:09,646 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 [2024-12-02 12:19:10,051 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 [2024-12-02 12:19:10,402 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$#1.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (and (forall ((v_ArrVal_7152 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7153 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7154 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7155 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse3 (store |c_#memory_$Pointer$#1.base| .cse0 v_ArrVal_7152))) (let ((.cse1 (select (select .cse3 |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (bvule (bvadd (select (select (store (store |c_#memory_$Pointer$#1.offset| .cse0 v_ArrVal_7153) .cse1 v_ArrVal_7154) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2) (_ bv24 32)) (select |c_#length| (select (select (store .cse3 .cse1 v_ArrVal_7155) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2)))))) (forall ((v_ArrVal_7152 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7153 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7154 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse4 (select (select (store (store |c_#memory_$Pointer$#1.offset| .cse0 v_ArrVal_7153) (select (select (store |c_#memory_$Pointer$#1.base| .cse0 v_ArrVal_7152) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2) v_ArrVal_7154) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (bvule (bvadd .cse4 (_ bv20 32)) (bvadd .cse4 (_ bv24 32)))))))) is different from false [2024-12-02 12:19:15,309 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 [2024-12-02 12:19:20,638 WARN L286 SmtUtils]: Spent 5.19s 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) [2024-12-02 12:19:22,014 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 [2024-12-02 12:19:22,051 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-12-02 12:19:22,051 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1505414203] [2024-12-02 12:19:22,052 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1505414203] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 12:19:22,052 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1727556189] [2024-12-02 12:19:22,052 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:19:22,052 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-12-02 12:19:22,052 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b82ffcb-81a8-434a-9eba-3030712c62d6/bin/uautomizer-verify-84ZbGMXZE1/cvc4 [2024-12-02 12:19:22,053 INFO L229 MonitoredProcess]: Starting monitored process 34 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b82ffcb-81a8-434a-9eba-3030712c62d6/bin/uautomizer-verify-84ZbGMXZE1/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-12-02 12:19:22,054 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b82ffcb-81a8-434a-9eba-3030712c62d6/bin/uautomizer-verify-84ZbGMXZE1/cvc4 --incremental --print-success --lang smt (34)] Waiting until timeout for monitored process [2024-12-02 12:19:34,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:19:34,349 INFO L256 TraceCheckSpWp]: Trace formula consists of 851 conjuncts, 119 conjuncts are in the unsatisfiable core [2024-12-02 12:19:34,359 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 12:19:34,406 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 [2024-12-02 12:19:37,004 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 [2024-12-02 12:19:37,306 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2024-12-02 12:19:37,306 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 [2024-12-02 12:19:37,453 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2024-12-02 12:19:37,552 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 [2024-12-02 12:19:38,324 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 [2024-12-02 12:19:38,373 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 [2024-12-02 12:19:47,942 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-12-02 12:19:47,942 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 [2024-12-02 12:19:48,040 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 [2024-12-02 12:19:49,037 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-12-02 12:19:49,037 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 [2024-12-02 12:19:49,134 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 [2024-12-02 12:19:49,867 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-12-02 12:19:49,867 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 [2024-12-02 12:19:49,964 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 [2024-12-02 12:19:50,695 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-12-02 12:19:50,695 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 [2024-12-02 12:19:50,793 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 [2024-12-02 12:19:51,132 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 13 [2024-12-02 12:19:51,227 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 [2024-12-02 12:19:51,229 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 946 trivial. 0 not checked. [2024-12-02 12:19:51,229 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 12:19:51,714 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse0 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (and (forall ((v_ArrVal_7735 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7734 (Array (_ BitVec 32) (_ BitVec 32)))) (bvule (bvadd (_ bv24 32) (select (select (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_#t~mem37#1.base| v_ArrVal_7734) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0)) (select |c_#length| (select (select (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem37#1.base| v_ArrVal_7735) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0)))) (forall ((v_ArrVal_7734 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse1 (select (select (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_#t~mem37#1.base| v_ArrVal_7734) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0))) (bvule (bvadd (_ bv20 32) .cse1) (bvadd (_ bv24 32) .cse1)))))) is different from false [2024-12-02 12:19:51,899 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 [2024-12-02 12:19:52,214 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 [2024-12-02 12:19:52,402 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 [2024-12-02 12:19:53,038 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 [2024-12-02 12:19:53,616 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 [2024-12-02 12:19:58,938 WARN L286 SmtUtils]: Spent 5.18s 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) [2024-12-02 12:20:02,249 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 [2024-12-02 12:20:02,293 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1727556189] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 12:20:02,294 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-12-02 12:20:02,294 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11] total 12 [2024-12-02 12:20:02,294 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1430584414] [2024-12-02 12:20:02,294 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-12-02 12:20:02,294 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-12-02 12:20:02,294 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-12-02 12:20:02,294 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-12-02 12:20:02,295 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=207, Unknown=18, NotChecked=520, Total=812 [2024-12-02 12:20:02,295 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) [2024-12-02 12:21:15,595 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 12:21:15,595 INFO L93 Difference]: Finished difference Result 818 states and 880 transitions. [2024-12-02 12:21:15,595 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-12-02 12:21:15,596 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 [2024-12-02 12:21:15,596 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 12:21:15,597 INFO L225 Difference]: With dead ends: 818 [2024-12-02 12:21:15,597 INFO L226 Difference]: Without dead ends: 818 [2024-12-02 12:21:15,598 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 282 GetRequests, 244 SyntacticMatches, 3 SemanticMatches, 35 ConstructedPredicates, 13 IntricatePredicates, 0 DeprecatedPredicates, 76 ImplicationChecksByTransitivity, 20.2s TimeCoverageRelationStatistics Valid=117, Invalid=468, Unknown=19, NotChecked=728, Total=1332 [2024-12-02 12:21:15,598 INFO L435 NwaCegarLoop]: 460 mSDtfsCounter, 420 mSDsluCounter, 1869 mSDsCounter, 0 mSdLazyCounter, 2704 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 67.6s 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, 68.7s IncrementalHoareTripleChecker+Time [2024-12-02 12:21:15,598 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [422 Valid, 2329 Invalid, 2711 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 2704 Invalid, 0 Unknown, 0 Unchecked, 68.7s Time] [2024-12-02 12:21:15,599 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 818 states. [2024-12-02 12:21:15,603 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 818 to 818. [2024-12-02 12:21:15,604 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) [2024-12-02 12:21:15,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 818 states to 818 states and 880 transitions. [2024-12-02 12:21:15,605 INFO L78 Accepts]: Start accepts. Automaton has 818 states and 880 transitions. Word has length 125 [2024-12-02 12:21:15,605 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 12:21:15,605 INFO L471 AbstractCegarLoop]: Abstraction has 818 states and 880 transitions. [2024-12-02 12:21:15,605 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) [2024-12-02 12:21:15,605 INFO L276 IsEmpty]: Start isEmpty. Operand 818 states and 880 transitions. [2024-12-02 12:21:15,606 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2024-12-02 12:21:15,606 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 12:21:15,606 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] [2024-12-02 12:21:15,627 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b82ffcb-81a8-434a-9eba-3030712c62d6/bin/uautomizer-verify-84ZbGMXZE1/cvc4 --incremental --print-success --lang smt (34)] Forceful destruction successful, exit code 0 [2024-12-02 12:21:15,818 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b82ffcb-81a8-434a-9eba-3030712c62d6/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Ended with exit code 0 [2024-12-02 12:21:16,006 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b82ffcb-81a8-434a-9eba-3030712c62d6/bin/uautomizer-verify-84ZbGMXZE1/cvc4 --incremental --print-success --lang smt,33 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b82ffcb-81a8-434a-9eba-3030712c62d6/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 12:21:16,007 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)] === [2024-12-02 12:21:16,007 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 12:21:16,007 INFO L85 PathProgramCache]: Analyzing trace with hash 2125742392, now seen corresponding path program 1 times [2024-12-02 12:21:16,007 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-12-02 12:21:16,008 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [838225724] [2024-12-02 12:21:16,008 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:21:16,008 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 12:21:16,008 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b82ffcb-81a8-434a-9eba-3030712c62d6/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 12:21:16,009 INFO L229 MonitoredProcess]: Starting monitored process 35 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b82ffcb-81a8-434a-9eba-3030712c62d6/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 12:21:16,010 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b82ffcb-81a8-434a-9eba-3030712c62d6/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Waiting until timeout for monitored process [2024-12-02 12:21:16,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:21:16,634 INFO L256 TraceCheckSpWp]: Trace formula consists of 888 conjuncts, 67 conjuncts are in the unsatisfiable core [2024-12-02 12:21:16,639 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 12:21:19,207 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2024-12-02 12:21:19,207 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 [2024-12-02 12:21:19,545 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 [2024-12-02 12:21:24,750 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-12-02 12:21:24,750 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 [2024-12-02 12:21:25,681 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-12-02 12:21:25,681 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 [2024-12-02 12:21:26,692 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-12-02 12:21:26,692 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 [2024-12-02 12:21:27,742 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-12-02 12:21:27,742 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 [2024-12-02 12:21:28,839 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-12-02 12:21:28,839 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 [2024-12-02 12:21:29,719 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 [2024-12-02 12:21:30,802 INFO L349 Elim1Store]: treesize reduction 24, result has 33.3 percent of original size [2024-12-02 12:21:30,802 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 [2024-12-02 12:21:30,851 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 946 trivial. 0 not checked. [2024-12-02 12:21:30,851 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 12:21:32,584 INFO L349 Elim1Store]: treesize reduction 7, result has 63.2 percent of original size [2024-12-02 12:21:32,584 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 [2024-12-02 12:21:32,673 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_8282 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_ULTIMATE.start_main_#t~mem38#1.base| (select (select (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem38#1.base| v_ArrVal_8282) |c_ULTIMATE.start_main_~user~0#1.base|) (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|)))) is different from false [2024-12-02 12:21:32,786 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 [2024-12-02 12:21:32,945 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 [2024-12-02 12:21:33,057 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 [2024-12-02 12:21:33,222 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 [2024-12-02 12:21:33,340 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 [2024-12-02 12:21:33,520 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 [2024-12-02 12:21:33,640 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 [2024-12-02 12:21:37,462 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-12-02 12:21:37,462 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [838225724] [2024-12-02 12:21:37,462 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [838225724] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 12:21:37,462 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1078321154] [2024-12-02 12:21:37,462 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:21:37,462 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-12-02 12:21:37,462 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b82ffcb-81a8-434a-9eba-3030712c62d6/bin/uautomizer-verify-84ZbGMXZE1/cvc4 [2024-12-02 12:21:37,464 INFO L229 MonitoredProcess]: Starting monitored process 36 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b82ffcb-81a8-434a-9eba-3030712c62d6/bin/uautomizer-verify-84ZbGMXZE1/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-12-02 12:21:37,465 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b82ffcb-81a8-434a-9eba-3030712c62d6/bin/uautomizer-verify-84ZbGMXZE1/cvc4 --incremental --print-success --lang smt (36)] Waiting until timeout for monitored process [2024-12-02 12:21:43,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:21:43,176 INFO L256 TraceCheckSpWp]: Trace formula consists of 888 conjuncts, 72 conjuncts are in the unsatisfiable core [2024-12-02 12:21:43,182 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 12:21:44,240 INFO L349 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2024-12-02 12:21:44,241 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 [2024-12-02 12:21:51,007 INFO L349 Elim1Store]: treesize reduction 54, result has 29.9 percent of original size [2024-12-02 12:21:51,007 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 [2024-12-02 12:21:52,292 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 [2024-12-02 12:21:55,405 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 [2024-12-02 12:22:16,833 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-12-02 12:22:16,833 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 [2024-12-02 12:22:19,906 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-12-02 12:22:19,906 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 [2024-12-02 12:22:22,176 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-12-02 12:22:22,176 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 [2024-12-02 12:22:24,357 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-12-02 12:22:24,357 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 [2024-12-02 12:22:26,657 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-12-02 12:22:26,657 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 [2024-12-02 12:22:27,212 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 [2024-12-02 12:22:29,835 INFO L349 Elim1Store]: treesize reduction 82, result has 29.3 percent of original size [2024-12-02 12:22:29,835 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 [2024-12-02 12:22:30,106 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 946 trivial. 0 not checked. [2024-12-02 12:22:30,106 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 12:22:31,195 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_8786 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (_ bv1 1) (select |c_#valid| (select (select (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem38#1.base| v_ArrVal_8786) |c_ULTIMATE.start_main_~user~0#1.base|) (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|)))))) is different from false [2024-12-02 12:22:31,305 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 [2024-12-02 12:22:31,467 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 [2024-12-02 12:22:31,581 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 [2024-12-02 12:22:31,749 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 [2024-12-02 12:22:31,867 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 [2024-12-02 12:22:32,040 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 [2024-12-02 12:22:32,160 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 [2024-12-02 12:22:36,401 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1078321154] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 12:22:36,401 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-12-02 12:22:36,402 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 13] total 27 [2024-12-02 12:22:36,402 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [703511267] [2024-12-02 12:22:36,402 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-12-02 12:22:36,402 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2024-12-02 12:22:36,402 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-12-02 12:22:36,403 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2024-12-02 12:22:36,403 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=167, Invalid=806, Unknown=21, NotChecked=1168, Total=2162 [2024-12-02 12:22:36,404 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) [2024-12-02 12:24:31,498 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 12:24:31,498 INFO L93 Difference]: Finished difference Result 1488 states and 1602 transitions. [2024-12-02 12:24:31,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2024-12-02 12:24:31,499 INFO L78 Accepts]: Start accepts. Automaton has 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) Word has length 129 [2024-12-02 12:24:31,499 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 12:24:31,501 INFO L225 Difference]: With dead ends: 1488 [2024-12-02 12:24:31,501 INFO L226 Difference]: Without dead ends: 1488 [2024-12-02 12:24:31,502 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 304 GetRequests, 242 SyntacticMatches, 3 SemanticMatches, 59 ConstructedPredicates, 16 IntricatePredicates, 0 DeprecatedPredicates, 516 ImplicationChecksByTransitivity, 30.0s TimeCoverageRelationStatistics Valid=290, Invalid=1733, Unknown=21, NotChecked=1616, Total=3660 [2024-12-02 12:24:31,502 INFO L435 NwaCegarLoop]: 366 mSDtfsCounter, 1650 mSDsluCounter, 3886 mSDsCounter, 0 mSdLazyCounter, 4286 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 106.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1656 SdHoareTripleChecker+Valid, 4252 SdHoareTripleChecker+Invalid, 4319 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 4286 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 107.9s IncrementalHoareTripleChecker+Time [2024-12-02 12:24:31,503 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1656 Valid, 4252 Invalid, 4319 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 4286 Invalid, 0 Unknown, 0 Unchecked, 107.9s Time] [2024-12-02 12:24:31,503 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1488 states. [2024-12-02 12:24:31,509 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1488 to 817. [2024-12-02 12:24:31,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 817 states, 548 states have (on average 1.5912408759124088) internal successors, (872), 811 states have internal predecessors, (872), 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) [2024-12-02 12:24:31,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 817 states to 817 states and 879 transitions. [2024-12-02 12:24:31,511 INFO L78 Accepts]: Start accepts. Automaton has 817 states and 879 transitions. Word has length 129 [2024-12-02 12:24:31,511 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 12:24:31,511 INFO L471 AbstractCegarLoop]: Abstraction has 817 states and 879 transitions. [2024-12-02 12:24:31,512 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has 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) [2024-12-02 12:24:31,512 INFO L276 IsEmpty]: Start isEmpty. Operand 817 states and 879 transitions. [2024-12-02 12:24:31,512 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2024-12-02 12:24:31,512 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 12:24:31,512 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] [2024-12-02 12:24:31,527 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b82ffcb-81a8-434a-9eba-3030712c62d6/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Forceful destruction successful, exit code 0 [2024-12-02 12:24:31,728 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b82ffcb-81a8-434a-9eba-3030712c62d6/bin/uautomizer-verify-84ZbGMXZE1/cvc4 --incremental --print-success --lang smt (36)] Ended with exit code 0 [2024-12-02 12:24:31,913 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b82ffcb-81a8-434a-9eba-3030712c62d6/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,36 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b82ffcb-81a8-434a-9eba-3030712c62d6/bin/uautomizer-verify-84ZbGMXZE1/cvc4 --incremental --print-success --lang smt [2024-12-02 12:24:31,913 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr89REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 422 more)] === [2024-12-02 12:24:31,913 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 12:24:31,913 INFO L85 PathProgramCache]: Analyzing trace with hash 2125742393, now seen corresponding path program 1 times [2024-12-02 12:24:31,914 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-12-02 12:24:31,914 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2119869492] [2024-12-02 12:24:31,914 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:24:31,914 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 12:24:31,914 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b82ffcb-81a8-434a-9eba-3030712c62d6/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 12:24:31,915 INFO L229 MonitoredProcess]: Starting monitored process 37 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b82ffcb-81a8-434a-9eba-3030712c62d6/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 12:24:31,916 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b82ffcb-81a8-434a-9eba-3030712c62d6/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Waiting until timeout for monitored process [2024-12-02 12:24:32,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:24:32,560 INFO L256 TraceCheckSpWp]: Trace formula consists of 888 conjuncts, 123 conjuncts are in the unsatisfiable core [2024-12-02 12:24:32,569 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 12:24:35,211 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2024-12-02 12:24:35,211 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 [2024-12-02 12:24:35,307 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 [2024-12-02 12:24:35,749 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 [2024-12-02 12:24:35,850 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 [2024-12-02 12:24:37,424 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 [2024-12-02 12:24:37,476 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 [2024-12-02 12:24:51,063 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-12-02 12:24:51,063 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 75 treesize of output 68 [2024-12-02 12:24:51,164 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 [2024-12-02 12:24:53,568 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-12-02 12:24:53,568 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 75 treesize of output 68 [2024-12-02 12:24:53,671 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 [2024-12-02 12:24:55,511 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-12-02 12:24:55,511 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 75 treesize of output 68 [2024-12-02 12:24:55,613 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 [2024-12-02 12:24:57,469 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-12-02 12:24:57,470 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 75 treesize of output 68 [2024-12-02 12:24:57,571 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 [2024-12-02 12:24:59,483 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-12-02 12:24:59,483 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 75 treesize of output 68 [2024-12-02 12:24:59,586 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 [2024-12-02 12:25:00,131 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 44 treesize of output 20 [2024-12-02 12:25:00,282 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 [2024-12-02 12:25:01,095 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-12-02 12:25:01,484 INFO L349 Elim1Store]: treesize reduction 21, result has 30.0 percent of original size [2024-12-02 12:25:01,485 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 19 treesize of output 21 [2024-12-02 12:25:01,751 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2024-12-02 12:25:01,751 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 [2024-12-02 12:25:02,443 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 946 trivial. 0 not checked. [2024-12-02 12:25:02,443 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 12:25:07,000 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (and (or (forall ((v_ArrVal_9338 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (select (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_#t~mem38#1.base| v_ArrVal_9338) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (bvule .cse0 (bvadd (_ bv4 32) .cse0)))) (forall ((|v_ULTIMATE.start_main_#t~malloc40#1.base_8| (_ BitVec 32))) (not (= (_ bv0 1) (select |c_#valid| |v_ULTIMATE.start_main_#t~malloc40#1.base_8|))))) (forall ((|v_ULTIMATE.start_main_#t~malloc40#1.base_8| (_ BitVec 32)) (v_ArrVal_9338 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_9337 (Array (_ BitVec 32) (_ BitVec 32)))) (or (forall ((v_ArrVal_9339 (_ BitVec 32))) (bvule (bvadd (_ bv4 32) (select (select (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_#t~mem38#1.base| v_ArrVal_9338) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)) (select (store |c_#length| |v_ULTIMATE.start_main_#t~malloc40#1.base_8| v_ArrVal_9339) (select (select (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem38#1.base| v_ArrVal_9337) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))) (not (= (_ bv0 1) (select |c_#valid| |v_ULTIMATE.start_main_#t~malloc40#1.base_8|))))))) is different from false [2024-12-02 12:25:07,337 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$#1.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (and (forall ((|v_ULTIMATE.start_main_#t~malloc40#1.base_8| (_ BitVec 32)) (v_ArrVal_9338 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_9337 (Array (_ BitVec 32) (_ BitVec 32)))) (or (forall ((v_ArrVal_9339 (_ BitVec 32))) (bvule (bvadd (_ bv4 32) (select (select (store |c_#memory_$Pointer$#1.offset| .cse0 v_ArrVal_9338) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)) (select (store |c_#length| |v_ULTIMATE.start_main_#t~malloc40#1.base_8| v_ArrVal_9339) (select (select (store |c_#memory_$Pointer$#1.base| .cse0 v_ArrVal_9337) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))) (not (= (_ bv0 1) (select |c_#valid| |v_ULTIMATE.start_main_#t~malloc40#1.base_8|))))) (or (forall ((|v_ULTIMATE.start_main_#t~malloc40#1.base_8| (_ BitVec 32))) (not (= (_ bv0 1) (select |c_#valid| |v_ULTIMATE.start_main_#t~malloc40#1.base_8|)))) (forall ((v_ArrVal_9338 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse2 (select (select (store |c_#memory_$Pointer$#1.offset| .cse0 v_ArrVal_9338) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (bvule .cse2 (bvadd (_ bv4 32) .cse2)))))))) is different from false [2024-12-02 12:25:07,925 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (and (or (forall ((v_ArrVal_9338 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_9336 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_9335 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (select (store (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_#t~mem37#1.base| v_ArrVal_9336) (select (select (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem37#1.base| v_ArrVal_9335) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_9338) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (bvule .cse0 (bvadd (_ bv4 32) .cse0)))) (forall ((|v_ULTIMATE.start_main_#t~malloc40#1.base_8| (_ BitVec 32))) (not (= (_ bv0 1) (select |c_#valid| |v_ULTIMATE.start_main_#t~malloc40#1.base_8|))))) (forall ((|v_ULTIMATE.start_main_#t~malloc40#1.base_8| (_ BitVec 32)) (v_ArrVal_9338 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_9337 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_9336 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_9335 (Array (_ BitVec 32) (_ BitVec 32)))) (or (forall ((v_ArrVal_9339 (_ BitVec 32))) (let ((.cse3 (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem37#1.base| v_ArrVal_9335))) (let ((.cse2 (select (select .cse3 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (bvule (bvadd (_ bv4 32) (select (select (store (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_#t~mem37#1.base| v_ArrVal_9336) .cse2 v_ArrVal_9338) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)) (select (store |c_#length| |v_ULTIMATE.start_main_#t~malloc40#1.base_8| v_ArrVal_9339) (select (select (store .cse3 .cse2 v_ArrVal_9337) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))))) (not (= (_ bv0 1) (select |c_#valid| |v_ULTIMATE.start_main_#t~malloc40#1.base_8|))))))) is different from false [2024-12-02 12:25:08,571 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$#1.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (and (forall ((|v_ULTIMATE.start_main_#t~malloc40#1.base_8| (_ BitVec 32)) (v_ArrVal_9338 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_9337 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_9336 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_9335 (Array (_ BitVec 32) (_ BitVec 32)))) (or (not (= (_ bv0 1) (select |c_#valid| |v_ULTIMATE.start_main_#t~malloc40#1.base_8|))) (forall ((v_ArrVal_9339 (_ BitVec 32))) (let ((.cse3 (store |c_#memory_$Pointer$#1.base| .cse0 v_ArrVal_9335))) (let ((.cse1 (select (select .cse3 |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (bvule (bvadd (select (select (store (store |c_#memory_$Pointer$#1.offset| .cse0 v_ArrVal_9336) .cse1 v_ArrVal_9338) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2) (_ bv4 32)) (select (store |c_#length| |v_ULTIMATE.start_main_#t~malloc40#1.base_8| v_ArrVal_9339) (select (select (store .cse3 .cse1 v_ArrVal_9337) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2)))))))) (or (forall ((|v_ULTIMATE.start_main_#t~malloc40#1.base_8| (_ BitVec 32))) (not (= (_ bv0 1) (select |c_#valid| |v_ULTIMATE.start_main_#t~malloc40#1.base_8|)))) (forall ((v_ArrVal_9338 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_9336 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_9335 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse4 (select (select (store (store |c_#memory_$Pointer$#1.offset| .cse0 v_ArrVal_9336) (select (select (store |c_#memory_$Pointer$#1.base| .cse0 v_ArrVal_9335) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2) v_ArrVal_9338) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (bvule .cse4 (bvadd .cse4 (_ bv4 32))))))))) is different from false [2024-12-02 12:25:09,195 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse2 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (and (forall ((|v_ULTIMATE.start_main_#t~malloc40#1.base_8| (_ BitVec 32)) (v_ArrVal_9338 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_9337 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_9336 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_9335 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_9334 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_9333 (Array (_ BitVec 32) (_ BitVec 32)))) (or (not (= (_ bv0 1) (select |c_#valid| |v_ULTIMATE.start_main_#t~malloc40#1.base_8|))) (forall ((v_ArrVal_9339 (_ BitVec 32))) (let ((.cse4 (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem36#1.base| v_ArrVal_9334))) (let ((.cse0 (select (select .cse4 |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (let ((.cse3 (store .cse4 .cse0 v_ArrVal_9335))) (let ((.cse1 (select (select .cse3 |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (bvule (bvadd (select (select (store (store (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_#t~mem36#1.base| v_ArrVal_9333) .cse0 v_ArrVal_9336) .cse1 v_ArrVal_9338) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2) (_ bv4 32)) (select (store |c_#length| |v_ULTIMATE.start_main_#t~malloc40#1.base_8| v_ArrVal_9339) (select (select (store .cse3 .cse1 v_ArrVal_9337) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2)))))))))) (or (forall ((|v_ULTIMATE.start_main_#t~malloc40#1.base_8| (_ BitVec 32))) (not (= (_ bv0 1) (select |c_#valid| |v_ULTIMATE.start_main_#t~malloc40#1.base_8|)))) (forall ((v_ArrVal_9338 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_9336 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_9335 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_9334 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_9333 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse5 (select (select (let ((.cse7 (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem36#1.base| v_ArrVal_9334))) (let ((.cse6 (select (select .cse7 |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (store (store (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_#t~mem36#1.base| v_ArrVal_9333) .cse6 v_ArrVal_9336) (select (select (store .cse7 .cse6 v_ArrVal_9335) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2) v_ArrVal_9338))) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (bvule .cse5 (bvadd .cse5 (_ bv4 32)))))))) is different from false [2024-12-02 12:25:09,568 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$#1.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse3))) (and (forall ((|v_ULTIMATE.start_main_#t~malloc40#1.base_8| (_ BitVec 32)) (v_ArrVal_9338 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_9337 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_9336 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_9335 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_9334 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_9333 (Array (_ BitVec 32) (_ BitVec 32)))) (or (forall ((v_ArrVal_9339 (_ BitVec 32))) (let ((.cse5 (store |c_#memory_$Pointer$#1.base| .cse0 v_ArrVal_9334))) (let ((.cse1 (select (select .cse5 |c_ULTIMATE.start_main_~user~0#1.base|) .cse3))) (let ((.cse4 (store .cse5 .cse1 v_ArrVal_9335))) (let ((.cse2 (select (select .cse4 |c_ULTIMATE.start_main_~user~0#1.base|) .cse3))) (bvule (bvadd (select (select (store (store (store |c_#memory_$Pointer$#1.offset| .cse0 v_ArrVal_9333) .cse1 v_ArrVal_9336) .cse2 v_ArrVal_9338) |c_ULTIMATE.start_main_~user~0#1.base|) .cse3) (_ bv4 32)) (select (store |c_#length| |v_ULTIMATE.start_main_#t~malloc40#1.base_8| v_ArrVal_9339) (select (select (store .cse4 .cse2 v_ArrVal_9337) |c_ULTIMATE.start_main_~user~0#1.base|) .cse3)))))))) (not (= (_ bv0 1) (select |c_#valid| |v_ULTIMATE.start_main_#t~malloc40#1.base_8|))))) (or (forall ((|v_ULTIMATE.start_main_#t~malloc40#1.base_8| (_ BitVec 32))) (not (= (_ bv0 1) (select |c_#valid| |v_ULTIMATE.start_main_#t~malloc40#1.base_8|)))) (forall ((v_ArrVal_9338 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_9336 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_9335 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_9334 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_9333 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse6 (select (select (let ((.cse8 (store |c_#memory_$Pointer$#1.base| .cse0 v_ArrVal_9334))) (let ((.cse7 (select (select .cse8 |c_ULTIMATE.start_main_~user~0#1.base|) .cse3))) (store (store (store |c_#memory_$Pointer$#1.offset| .cse0 v_ArrVal_9333) .cse7 v_ArrVal_9336) (select (select (store .cse8 .cse7 v_ArrVal_9335) |c_ULTIMATE.start_main_~user~0#1.base|) .cse3) v_ArrVal_9338))) |c_ULTIMATE.start_main_~user~0#1.base|) .cse3))) (bvule .cse6 (bvadd .cse6 (_ bv4 32))))))))) is different from false [2024-12-02 12:25:10,190 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse4 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (and (or (forall ((|v_ULTIMATE.start_main_#t~malloc40#1.base_8| (_ BitVec 32))) (not (= (_ bv0 1) (select |c_#valid| |v_ULTIMATE.start_main_#t~malloc40#1.base_8|)))) (forall ((v_ArrVal_9332 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_9331 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_9338 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_9336 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_9335 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_9334 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_9333 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (select (let ((.cse5 (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem35#1.base| v_ArrVal_9332))) (let ((.cse1 (select (select .cse5 |c_ULTIMATE.start_main_~user~0#1.base|) .cse4))) (let ((.cse3 (store .cse5 .cse1 v_ArrVal_9334))) (let ((.cse2 (select (select .cse3 |c_ULTIMATE.start_main_~user~0#1.base|) .cse4))) (store (store (store (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_#t~mem35#1.base| v_ArrVal_9331) .cse1 v_ArrVal_9333) .cse2 v_ArrVal_9336) (select (select (store .cse3 .cse2 v_ArrVal_9335) |c_ULTIMATE.start_main_~user~0#1.base|) .cse4) v_ArrVal_9338))))) |c_ULTIMATE.start_main_~user~0#1.base|) .cse4))) (bvule .cse0 (bvadd (_ bv4 32) .cse0))))) (forall ((v_ArrVal_9332 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_9331 (Array (_ BitVec 32) (_ BitVec 32))) (|v_ULTIMATE.start_main_#t~malloc40#1.base_8| (_ BitVec 32)) (v_ArrVal_9338 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_9337 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_9336 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_9335 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_9334 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_9333 (Array (_ BitVec 32) (_ BitVec 32)))) (or (not (= (_ bv0 1) (select |c_#valid| |v_ULTIMATE.start_main_#t~malloc40#1.base_8|))) (forall ((v_ArrVal_9339 (_ BitVec 32))) (let ((.cse11 (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem35#1.base| v_ArrVal_9332))) (let ((.cse6 (select (select .cse11 |c_ULTIMATE.start_main_~user~0#1.base|) .cse4))) (let ((.cse10 (store .cse11 .cse6 v_ArrVal_9334))) (let ((.cse7 (select (select .cse10 |c_ULTIMATE.start_main_~user~0#1.base|) .cse4))) (let ((.cse9 (store .cse10 .cse7 v_ArrVal_9335))) (let ((.cse8 (select (select .cse9 |c_ULTIMATE.start_main_~user~0#1.base|) .cse4))) (bvule (bvadd (_ bv4 32) (select (select (store (store (store (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_#t~mem35#1.base| v_ArrVal_9331) .cse6 v_ArrVal_9333) .cse7 v_ArrVal_9336) .cse8 v_ArrVal_9338) |c_ULTIMATE.start_main_~user~0#1.base|) .cse4)) (select (store |c_#length| |v_ULTIMATE.start_main_#t~malloc40#1.base_8| v_ArrVal_9339) (select (select (store .cse9 .cse8 v_ArrVal_9337) |c_ULTIMATE.start_main_~user~0#1.base|) .cse4)))))))))))))) is different from false [2024-12-02 12:25:10,564 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse5 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (let ((.cse1 (select (select |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse5))) (and (or (forall ((|v_ULTIMATE.start_main_#t~malloc40#1.base_8| (_ BitVec 32))) (not (= (_ bv0 1) (select |c_#valid| |v_ULTIMATE.start_main_#t~malloc40#1.base_8|)))) (forall ((v_ArrVal_9332 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_9331 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_9338 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_9336 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_9335 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_9334 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_9333 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (select (let ((.cse6 (store |c_#memory_$Pointer$#1.base| .cse1 v_ArrVal_9332))) (let ((.cse2 (select (select .cse6 |c_ULTIMATE.start_main_~user~0#1.base|) .cse5))) (let ((.cse4 (store .cse6 .cse2 v_ArrVal_9334))) (let ((.cse3 (select (select .cse4 |c_ULTIMATE.start_main_~user~0#1.base|) .cse5))) (store (store (store (store |c_#memory_$Pointer$#1.offset| .cse1 v_ArrVal_9331) .cse2 v_ArrVal_9333) .cse3 v_ArrVal_9336) (select (select (store .cse4 .cse3 v_ArrVal_9335) |c_ULTIMATE.start_main_~user~0#1.base|) .cse5) v_ArrVal_9338))))) |c_ULTIMATE.start_main_~user~0#1.base|) .cse5))) (bvule .cse0 (bvadd (_ bv4 32) .cse0))))) (forall ((v_ArrVal_9332 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_9331 (Array (_ BitVec 32) (_ BitVec 32))) (|v_ULTIMATE.start_main_#t~malloc40#1.base_8| (_ BitVec 32)) (v_ArrVal_9338 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_9337 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_9336 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_9335 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_9334 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_9333 (Array (_ BitVec 32) (_ BitVec 32)))) (or (not (= (_ bv0 1) (select |c_#valid| |v_ULTIMATE.start_main_#t~malloc40#1.base_8|))) (forall ((v_ArrVal_9339 (_ BitVec 32))) (let ((.cse12 (store |c_#memory_$Pointer$#1.base| .cse1 v_ArrVal_9332))) (let ((.cse7 (select (select .cse12 |c_ULTIMATE.start_main_~user~0#1.base|) .cse5))) (let ((.cse11 (store .cse12 .cse7 v_ArrVal_9334))) (let ((.cse8 (select (select .cse11 |c_ULTIMATE.start_main_~user~0#1.base|) .cse5))) (let ((.cse10 (store .cse11 .cse8 v_ArrVal_9335))) (let ((.cse9 (select (select .cse10 |c_ULTIMATE.start_main_~user~0#1.base|) .cse5))) (bvule (bvadd (_ bv4 32) (select (select (store (store (store (store |c_#memory_$Pointer$#1.offset| .cse1 v_ArrVal_9331) .cse7 v_ArrVal_9333) .cse8 v_ArrVal_9336) .cse9 v_ArrVal_9338) |c_ULTIMATE.start_main_~user~0#1.base|) .cse5)) (select (store |c_#length| |v_ULTIMATE.start_main_#t~malloc40#1.base_8| v_ArrVal_9339) (select (select (store .cse10 .cse9 v_ArrVal_9337) |c_ULTIMATE.start_main_~user~0#1.base|) .cse5))))))))))))))) is different from false [2024-12-02 12:25:16,423 WARN L286 SmtUtils]: Spent 5.55s on a formula simplification that was a NOOP. DAG size: 362 (called from [L 276] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2024-12-02 12:25:17,980 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-12-02 12:25:17,980 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 795 treesize of output 819 [2024-12-02 12:25:24,198 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse5 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (and (forall ((v_prenex_39 (Array (_ BitVec 32) (_ BitVec 32))) (v_prenex_37 (Array (_ BitVec 32) (_ BitVec 32))) (v_prenex_38 (Array (_ BitVec 32) (_ BitVec 32))) (v_prenex_35 (Array (_ BitVec 32) (_ BitVec 32))) (v_prenex_33 (Array (_ BitVec 32) (_ BitVec 32))) (v_prenex_34 (Array (_ BitVec 32) (_ BitVec 32))) (v_prenex_32 (Array (_ BitVec 32) (_ BitVec 32))) (v_prenex_40 (Array (_ BitVec 32) (_ BitVec 32))) (v_prenex_41 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (select (let ((.cse7 (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem33#1.base| v_prenex_32))) (let ((.cse1 (select (select .cse7 |c_ULTIMATE.start_main_~user~0#1.base|) .cse5))) (let ((.cse6 (store .cse7 .cse1 v_prenex_33))) (let ((.cse2 (select (select .cse6 |c_ULTIMATE.start_main_~user~0#1.base|) .cse5))) (let ((.cse4 (store .cse6 .cse2 v_prenex_40))) (let ((.cse3 (select (select .cse4 |c_ULTIMATE.start_main_~user~0#1.base|) .cse5))) (store (store (store (store (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_#t~mem33#1.base| v_prenex_34) .cse1 v_prenex_35) .cse2 v_prenex_41) .cse3 v_prenex_38) (select (select (store .cse4 .cse3 v_prenex_39) |c_ULTIMATE.start_main_~user~0#1.base|) .cse5) v_prenex_37))))))) |c_ULTIMATE.start_main_~user~0#1.base|) .cse5))) (bvule .cse0 (bvadd .cse0 (_ bv4 32))))) (forall ((|v_ULTIMATE.start_main_#t~malloc40#1.base_8| (_ BitVec 32))) (or (= |c_ULTIMATE.start_main_#t~mem33#1.base| |v_ULTIMATE.start_main_#t~malloc40#1.base_8|) (forall ((v_ArrVal_9431 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_9332 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_9430 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_9331 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_9339 (_ BitVec 32)) (v_ArrVal_9338 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_9337 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_9336 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_9335 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_9334 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_9333 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse15 (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem33#1.base| v_ArrVal_9431))) (let ((.cse8 (select (select .cse15 |c_ULTIMATE.start_main_~user~0#1.base|) .cse5))) (let ((.cse14 (store .cse15 .cse8 v_ArrVal_9332))) (let ((.cse9 (select (select .cse14 |c_ULTIMATE.start_main_~user~0#1.base|) .cse5))) (let ((.cse13 (store .cse14 .cse9 v_ArrVal_9334))) (let ((.cse10 (select (select .cse13 |c_ULTIMATE.start_main_~user~0#1.base|) .cse5))) (let ((.cse12 (store .cse13 .cse10 v_ArrVal_9335))) (let ((.cse11 (select (select .cse12 |c_ULTIMATE.start_main_~user~0#1.base|) .cse5))) (bvule (bvadd (_ bv4 32) (select (select (store (store (store (store (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_#t~mem33#1.base| v_ArrVal_9430) .cse8 v_ArrVal_9331) .cse9 v_ArrVal_9333) .cse10 v_ArrVal_9336) .cse11 v_ArrVal_9338) |c_ULTIMATE.start_main_~user~0#1.base|) .cse5)) (select (store |c_#length| |v_ULTIMATE.start_main_#t~malloc40#1.base_8| v_ArrVal_9339) (select (select (store .cse12 .cse11 v_ArrVal_9337) |c_ULTIMATE.start_main_~user~0#1.base|) .cse5)))))))))))))))) is different from false [2024-12-02 12:25:24,269 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-12-02 12:25:24,269 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2119869492] [2024-12-02 12:25:24,269 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2119869492] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 12:25:24,269 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [781392489] [2024-12-02 12:25:24,269 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 12:25:24,270 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-12-02 12:25:24,270 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b82ffcb-81a8-434a-9eba-3030712c62d6/bin/uautomizer-verify-84ZbGMXZE1/cvc4 [2024-12-02 12:25:24,271 INFO L229 MonitoredProcess]: Starting monitored process 38 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b82ffcb-81a8-434a-9eba-3030712c62d6/bin/uautomizer-verify-84ZbGMXZE1/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-12-02 12:25:24,272 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1b82ffcb-81a8-434a-9eba-3030712c62d6/bin/uautomizer-verify-84ZbGMXZE1/cvc4 --incremental --print-success --lang smt (38)] Waiting until timeout for monitored process [2024-12-02 12:25:29,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 12:25:29,553 INFO L256 TraceCheckSpWp]: Trace formula consists of 888 conjuncts, 125 conjuncts are in the unsatisfiable core [2024-12-02 12:25:29,564 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 12:25:29,687 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 [2024-12-02 12:25:35,652 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 [2024-12-02 12:25:36,923 INFO L349 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2024-12-02 12:25:36,924 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 19 treesize of output 27 [2024-12-02 12:25:39,311 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2024-12-02 12:25:39,528 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 [2024-12-02 12:25:46,876 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 35 treesize of output 17 [2024-12-02 12:25:46,985 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