./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/uthash-2.0.2/uthash_SAX_nondet_test1-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 826ab2ba Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_590f1fe9-8640-4e47-a434-3444a6035e24/bin/uautomizer-verify-qhAvR1uOyd/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_590f1fe9-8640-4e47-a434-3444a6035e24/bin/uautomizer-verify-qhAvR1uOyd/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_590f1fe9-8640-4e47-a434-3444a6035e24/bin/uautomizer-verify-qhAvR1uOyd/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_590f1fe9-8640-4e47-a434-3444a6035e24/bin/uautomizer-verify-qhAvR1uOyd/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_SAX_nondet_test1-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_590f1fe9-8640-4e47-a434-3444a6035e24/bin/uautomizer-verify-qhAvR1uOyd/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_590f1fe9-8640-4e47-a434-3444a6035e24/bin/uautomizer-verify-qhAvR1uOyd --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 112ef0f8366461020cac5f2ac7dec2d7e41f31b24e653cd7734885d2bb23b087 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-826ab2b [2024-11-13 16:11:03,798 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-13 16:11:03,874 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_590f1fe9-8640-4e47-a434-3444a6035e24/bin/uautomizer-verify-qhAvR1uOyd/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2024-11-13 16:11:03,884 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-13 16:11:03,884 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-13 16:11:03,922 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-13 16:11:03,923 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-13 16:11:03,923 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-13 16:11:03,924 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-13 16:11:03,924 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-13 16:11:03,925 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-13 16:11:03,925 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-13 16:11:03,925 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-13 16:11:03,926 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-13 16:11:03,927 INFO L153 SettingsManager]: * Use SBE=true [2024-11-13 16:11:03,927 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-13 16:11:03,927 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-13 16:11:03,928 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-13 16:11:03,928 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-13 16:11:03,928 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-13 16:11:03,928 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-11-13 16:11:03,928 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-11-13 16:11:03,928 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-11-13 16:11:03,928 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-13 16:11:03,928 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-13 16:11:03,928 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-13 16:11:03,929 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-13 16:11:03,929 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-13 16:11:03,929 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-13 16:11:03,929 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-13 16:11:03,929 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-13 16:11:03,929 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-13 16:11:03,929 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-13 16:11:03,929 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-13 16:11:03,930 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-13 16:11:03,930 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-13 16:11:03,930 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-13 16:11:03,930 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-13 16:11:03,930 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-13 16:11:03,930 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-13 16:11:03,931 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-13 16:11:03,931 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-13 16:11:03,932 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_590f1fe9-8640-4e47-a434-3444a6035e24/bin/uautomizer-verify-qhAvR1uOyd Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 112ef0f8366461020cac5f2ac7dec2d7e41f31b24e653cd7734885d2bb23b087 [2024-11-13 16:11:04,299 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-13 16:11:04,314 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-13 16:11:04,317 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-13 16:11:04,319 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-13 16:11:04,319 INFO L274 PluginConnector]: CDTParser initialized [2024-11-13 16:11:04,321 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_590f1fe9-8640-4e47-a434-3444a6035e24/bin/uautomizer-verify-qhAvR1uOyd/../../sv-benchmarks/c/uthash-2.0.2/uthash_SAX_nondet_test1-2.i Unable to find full path for "g++" [2024-11-13 16:11:06,356 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-13 16:11:06,800 INFO L384 CDTParser]: Found 1 translation units. [2024-11-13 16:11:06,803 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_590f1fe9-8640-4e47-a434-3444a6035e24/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_nondet_test1-2.i [2024-11-13 16:11:06,826 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_590f1fe9-8640-4e47-a434-3444a6035e24/bin/uautomizer-verify-qhAvR1uOyd/data/a671a8056/b29c7d3cb8464450b3fcc8176efae697/FLAGc0d142213 [2024-11-13 16:11:06,951 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_590f1fe9-8640-4e47-a434-3444a6035e24/bin/uautomizer-verify-qhAvR1uOyd/data/a671a8056/b29c7d3cb8464450b3fcc8176efae697 [2024-11-13 16:11:06,954 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-13 16:11:06,956 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-13 16:11:06,958 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-13 16:11:06,958 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-13 16:11:06,963 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-13 16:11:06,964 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 04:11:06" (1/1) ... [2024-11-13 16:11:06,965 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@688ca4f8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 04:11:06, skipping insertion in model container [2024-11-13 16:11:06,965 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 04:11:06" (1/1) ... [2024-11-13 16:11:07,028 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-13 16:11:07,597 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-13 16:11:07,658 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-13 16:11:07,663 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-13 16:11:07,675 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-13 16:11:07,683 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-13 16:11:07,706 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-13 16:11:07,709 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-13 16:11:07,716 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-13 16:11:07,720 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-13 16:11:07,721 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-13 16:11:07,722 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-13 16:11:07,731 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-13 16:11:07,737 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-13 16:11:07,760 ERROR L321 MainTranslator]: Unsupported Syntax: Found a cast between two array/pointer types of different sizes while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) [2024-11-13 16:11:07,760 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@578955ad and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 04:11:07, skipping insertion in model container [2024-11-13 16:11:07,761 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-13 16:11:07,761 INFO L186 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2024-11-13 16:11:07,764 INFO L158 Benchmark]: Toolchain (without parser) took 807.18ms. Allocated memory is still 117.4MB. Free memory was 89.9MB in the beginning and 72.6MB in the end (delta: 17.3MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2024-11-13 16:11:07,765 INFO L158 Benchmark]: CDTParser took 0.43ms. Allocated memory is still 83.9MB. Free memory is still 41.3MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-13 16:11:07,765 INFO L158 Benchmark]: CACSL2BoogieTranslator took 803.55ms. Allocated memory is still 117.4MB. Free memory was 89.4MB in the beginning and 72.6MB in the end (delta: 16.8MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2024-11-13 16:11:07,767 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.43ms. Allocated memory is still 83.9MB. Free memory is still 41.3MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 803.55ms. Allocated memory is still 117.4MB. Free memory was 89.4MB in the beginning and 72.6MB in the end (delta: 16.8MB). 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_590f1fe9-8640-4e47-a434-3444a6035e24/bin/uautomizer-verify-qhAvR1uOyd/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_590f1fe9-8640-4e47-a434-3444a6035e24/bin/uautomizer-verify-qhAvR1uOyd/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_590f1fe9-8640-4e47-a434-3444a6035e24/bin/uautomizer-verify-qhAvR1uOyd/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_590f1fe9-8640-4e47-a434-3444a6035e24/bin/uautomizer-verify-qhAvR1uOyd/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_SAX_nondet_test1-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_590f1fe9-8640-4e47-a434-3444a6035e24/bin/uautomizer-verify-qhAvR1uOyd/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_590f1fe9-8640-4e47-a434-3444a6035e24/bin/uautomizer-verify-qhAvR1uOyd --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 112ef0f8366461020cac5f2ac7dec2d7e41f31b24e653cd7734885d2bb23b087 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-826ab2b [2024-11-13 16:11:10,680 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-13 16:11:10,835 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_590f1fe9-8640-4e47-a434-3444a6035e24/bin/uautomizer-verify-qhAvR1uOyd/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2024-11-13 16:11:10,846 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-13 16:11:10,847 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-13 16:11:10,888 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-13 16:11:10,888 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-13 16:11:10,889 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-13 16:11:10,889 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-13 16:11:10,890 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-13 16:11:10,890 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-13 16:11:10,890 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-13 16:11:10,890 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-13 16:11:10,891 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-13 16:11:10,891 INFO L153 SettingsManager]: * Use SBE=true [2024-11-13 16:11:10,891 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-13 16:11:10,891 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-13 16:11:10,891 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-13 16:11:10,892 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-13 16:11:10,892 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-13 16:11:10,892 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-11-13 16:11:10,892 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-11-13 16:11:10,892 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-11-13 16:11:10,892 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-13 16:11:10,892 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-13 16:11:10,893 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2024-11-13 16:11:10,893 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-13 16:11:10,893 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2024-11-13 16:11:10,893 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-13 16:11:10,893 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-13 16:11:10,893 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-13 16:11:10,894 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-13 16:11:10,894 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-13 16:11:10,894 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-13 16:11:10,894 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-13 16:11:10,894 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-13 16:11:10,894 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-13 16:11:10,894 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-13 16:11:10,894 INFO L153 SettingsManager]: * Trace refinement strategy=FOX [2024-11-13 16:11:10,895 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2024-11-13 16:11:10,895 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-13 16:11:10,895 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-13 16:11:10,895 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-13 16:11:10,895 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-13 16:11:10,895 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_590f1fe9-8640-4e47-a434-3444a6035e24/bin/uautomizer-verify-qhAvR1uOyd Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 112ef0f8366461020cac5f2ac7dec2d7e41f31b24e653cd7734885d2bb23b087 [2024-11-13 16:11:11,272 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-13 16:11:11,284 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-13 16:11:11,287 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-13 16:11:11,290 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-13 16:11:11,290 INFO L274 PluginConnector]: CDTParser initialized [2024-11-13 16:11:11,292 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_590f1fe9-8640-4e47-a434-3444a6035e24/bin/uautomizer-verify-qhAvR1uOyd/../../sv-benchmarks/c/uthash-2.0.2/uthash_SAX_nondet_test1-2.i Unable to find full path for "g++" [2024-11-13 16:11:13,770 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-13 16:11:14,320 INFO L384 CDTParser]: Found 1 translation units. [2024-11-13 16:11:14,321 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_590f1fe9-8640-4e47-a434-3444a6035e24/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_nondet_test1-2.i [2024-11-13 16:11:14,351 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_590f1fe9-8640-4e47-a434-3444a6035e24/bin/uautomizer-verify-qhAvR1uOyd/data/ff9071a57/582af272bd3a4dc398624c2f7b27412f/FLAG61f6b03d1 [2024-11-13 16:11:14,375 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_590f1fe9-8640-4e47-a434-3444a6035e24/bin/uautomizer-verify-qhAvR1uOyd/data/ff9071a57/582af272bd3a4dc398624c2f7b27412f [2024-11-13 16:11:14,379 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-13 16:11:14,382 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-13 16:11:14,383 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-13 16:11:14,384 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-13 16:11:14,389 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-13 16:11:14,391 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 04:11:14" (1/1) ... [2024-11-13 16:11:14,392 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@735a2cde and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 04:11:14, skipping insertion in model container [2024-11-13 16:11:14,392 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 04:11:14" (1/1) ... [2024-11-13 16:11:14,456 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-13 16:11:15,055 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-13 16:11:15,128 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-13 16:11:15,137 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-13 16:11:15,152 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-13 16:11:15,169 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-13 16:11:15,198 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-13 16:11:15,202 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-13 16:11:15,209 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-13 16:11:15,213 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-13 16:11:15,217 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-13 16:11:15,219 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-13 16:11:15,232 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-13 16:11:15,236 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-13 16:11:15,263 INFO L197 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2024-11-13 16:11:15,286 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-13 16:11:15,332 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-13 16:11:15,369 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-13 16:11:15,373 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-13 16:11:15,381 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-13 16:11:15,387 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-13 16:11:15,413 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-13 16:11:15,415 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-13 16:11:15,420 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-13 16:11:15,421 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-13 16:11:15,422 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-13 16:11:15,427 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-13 16:11:15,435 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-13 16:11:15,440 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-13 16:11:15,453 INFO L200 MainTranslator]: Completed pre-run [2024-11-13 16:11:15,583 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-13 16:11:15,654 INFO L204 MainTranslator]: Completed translation [2024-11-13 16:11:15,655 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 04:11:15 WrapperNode [2024-11-13 16:11:15,655 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-13 16:11:15,656 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-13 16:11:15,656 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-13 16:11:15,656 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-13 16:11:15,664 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 04:11:15" (1/1) ... [2024-11-13 16:11:15,691 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 04:11:15" (1/1) ... [2024-11-13 16:11:15,745 INFO L138 Inliner]: procedures = 179, calls = 221, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 739 [2024-11-13 16:11:15,745 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-13 16:11:15,746 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-13 16:11:15,746 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-13 16:11:15,746 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-13 16:11:15,757 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 04:11:15" (1/1) ... [2024-11-13 16:11:15,757 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 04:11:15" (1/1) ... [2024-11-13 16:11:15,766 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 04:11:15" (1/1) ... [2024-11-13 16:11:15,853 INFO L175 MemorySlicer]: Split 206 memory accesses to 2 slices as follows [2, 204]. 99 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 50 writes are split as follows [0, 50]. [2024-11-13 16:11:15,857 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 04:11:15" (1/1) ... [2024-11-13 16:11:15,857 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 04:11:15" (1/1) ... [2024-11-13 16:11:15,914 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 04:11:15" (1/1) ... [2024-11-13 16:11:15,924 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 04:11:15" (1/1) ... [2024-11-13 16:11:15,932 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 04:11:15" (1/1) ... [2024-11-13 16:11:15,939 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 04:11:15" (1/1) ... [2024-11-13 16:11:15,952 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-13 16:11:15,953 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-13 16:11:15,953 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-13 16:11:15,953 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-13 16:11:15,954 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 04:11:15" (1/1) ... [2024-11-13 16:11:15,965 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-13 16:11:15,983 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_590f1fe9-8640-4e47-a434-3444a6035e24/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 16:11:15,997 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_590f1fe9-8640-4e47-a434-3444a6035e24/bin/uautomizer-verify-qhAvR1uOyd/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-13 16:11:16,001 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_590f1fe9-8640-4e47-a434-3444a6035e24/bin/uautomizer-verify-qhAvR1uOyd/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-13 16:11:16,030 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#0 [2024-11-13 16:11:16,030 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#1 [2024-11-13 16:11:16,031 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#0 [2024-11-13 16:11:16,032 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#1 [2024-11-13 16:11:16,032 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#0 [2024-11-13 16:11:16,032 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#1 [2024-11-13 16:11:16,032 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#0 [2024-11-13 16:11:16,032 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#1 [2024-11-13 16:11:16,032 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-13 16:11:16,032 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-13 16:11:16,032 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2024-11-13 16:11:16,032 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2024-11-13 16:11:16,032 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2024-11-13 16:11:16,032 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2024-11-13 16:11:16,032 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-13 16:11:16,032 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#0 [2024-11-13 16:11:16,033 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#1 [2024-11-13 16:11:16,033 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2024-11-13 16:11:16,033 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#1 [2024-11-13 16:11:16,033 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-13 16:11:16,033 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-13 16:11:16,315 INFO L238 CfgBuilder]: Building ICFG [2024-11-13 16:11:16,317 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-13 16:11:16,320 WARN L781 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2024-11-13 16:11:16,387 WARN L781 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2024-11-13 16:11:20,467 INFO L? ?]: Removed 893 outVars from TransFormulas that were not future-live. [2024-11-13 16:11:20,467 INFO L287 CfgBuilder]: Performing block encoding [2024-11-13 16:11:20,513 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-13 16:11:20,513 INFO L316 CfgBuilder]: Removed 40 assume(true) statements. [2024-11-13 16:11:20,514 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 04:11:20 BoogieIcfgContainer [2024-11-13 16:11:20,514 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-13 16:11:20,522 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-13 16:11:20,523 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-13 16:11:20,529 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-13 16:11:20,530 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.11 04:11:14" (1/3) ... [2024-11-13 16:11:20,530 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@57c1db63 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 04:11:20, skipping insertion in model container [2024-11-13 16:11:20,530 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 04:11:15" (2/3) ... [2024-11-13 16:11:20,531 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@57c1db63 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 04:11:20, skipping insertion in model container [2024-11-13 16:11:20,531 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 04:11:20" (3/3) ... [2024-11-13 16:11:20,532 INFO L112 eAbstractionObserver]: Analyzing ICFG uthash_SAX_nondet_test1-2.i [2024-11-13 16:11:20,549 INFO L217 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-13 16:11:20,550 INFO L154 ceAbstractionStarter]: Applying trace abstraction to ICFG uthash_SAX_nondet_test1-2.i that has 3 procedures, 841 locations, 1 initial locations, 25 loop locations, and 425 error locations. [2024-11-13 16:11:20,626 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-13 16:11:20,644 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;@6c51c23c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-13 16:11:20,644 INFO L334 AbstractCegarLoop]: Starting to check reachability of 425 error locations. [2024-11-13 16:11:20,652 INFO L276 IsEmpty]: Start isEmpty. Operand has 836 states, 409 states have (on average 2.234718826405868) internal successors, (914), 831 states have internal predecessors, (914), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-13 16:11:20,657 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2024-11-13 16:11:20,658 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 16:11:20,659 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2024-11-13 16:11:20,659 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 422 more)] === [2024-11-13 16:11:20,664 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:11:20,665 INFO L85 PathProgramCache]: Analyzing trace with hash 45876316, now seen corresponding path program 1 times [2024-11-13 16:11:20,675 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-13 16:11:20,676 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [948578173] [2024-11-13 16:11:20,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:11:20,677 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:11:20,677 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_590f1fe9-8640-4e47-a434-3444a6035e24/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 16:11:20,680 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_590f1fe9-8640-4e47-a434-3444a6035e24/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 16:11:20,683 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_590f1fe9-8640-4e47-a434-3444a6035e24/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-13 16:11:20,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:11:20,887 INFO L255 TraceCheckSpWp]: Trace formula consists of 27 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-13 16:11:20,892 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 16:11:20,951 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2024-11-13 16:11:20,988 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:11:20,989 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 16:11:20,989 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-13 16:11:20,993 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [948578173] [2024-11-13 16:11:20,994 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [948578173] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 16:11:20,994 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 16:11:20,994 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-13 16:11:20,996 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1162710126] [2024-11-13 16:11:20,996 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 16:11:21,003 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-13 16:11:21,004 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-13 16:11:21,033 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-13 16:11:21,034 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 16:11:21,040 INFO L87 Difference]: Start difference. First operand has 836 states, 409 states have (on average 2.234718826405868) internal successors, (914), 831 states have internal predecessors, (914), 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 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 16:11:23,081 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 16:11:23,082 INFO L93 Difference]: Finished difference Result 779 states and 818 transitions. [2024-11-13 16:11:23,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-13 16:11:23,085 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 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 5 [2024-11-13 16:11:23,085 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 16:11:23,104 INFO L225 Difference]: With dead ends: 779 [2024-11-13 16:11:23,105 INFO L226 Difference]: Without dead ends: 777 [2024-11-13 16:11:23,107 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 16:11:23,110 INFO L432 NwaCegarLoop]: 506 mSDtfsCounter, 516 mSDsluCounter, 115 mSDsCounter, 0 mSdLazyCounter, 488 mSolverCounterSat, 53 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 519 SdHoareTripleChecker+Valid, 621 SdHoareTripleChecker+Invalid, 541 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 488 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2024-11-13 16:11:23,110 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [519 Valid, 621 Invalid, 541 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [53 Valid, 488 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2024-11-13 16:11:23,130 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 777 states. [2024-11-13 16:11:23,211 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 777 to 775. [2024-11-13 16:11:23,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 775 states, 403 states have (on average 2.002481389578164) internal successors, (807), 770 states have internal predecessors, (807), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-13 16:11:23,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 775 states to 775 states and 813 transitions. [2024-11-13 16:11:23,225 INFO L78 Accepts]: Start accepts. Automaton has 775 states and 813 transitions. Word has length 5 [2024-11-13 16:11:23,226 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 16:11:23,226 INFO L471 AbstractCegarLoop]: Abstraction has 775 states and 813 transitions. [2024-11-13 16:11:23,226 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 16:11:23,226 INFO L276 IsEmpty]: Start isEmpty. Operand 775 states and 813 transitions. [2024-11-13 16:11:23,227 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2024-11-13 16:11:23,227 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 16:11:23,227 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2024-11-13 16:11:23,250 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_590f1fe9-8640-4e47-a434-3444a6035e24/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-13 16:11:23,431 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_590f1fe9-8640-4e47-a434-3444a6035e24/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:11:23,432 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 422 more)] === [2024-11-13 16:11:23,433 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:11:23,433 INFO L85 PathProgramCache]: Analyzing trace with hash 45876317, now seen corresponding path program 1 times [2024-11-13 16:11:23,434 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-13 16:11:23,434 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2135252602] [2024-11-13 16:11:23,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:11:23,434 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:11:23,434 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_590f1fe9-8640-4e47-a434-3444a6035e24/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 16:11:23,437 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_590f1fe9-8640-4e47-a434-3444a6035e24/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 16:11:23,439 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_590f1fe9-8640-4e47-a434-3444a6035e24/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-13 16:11:23,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:11:23,584 INFO L255 TraceCheckSpWp]: Trace formula consists of 27 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-13 16:11:23,586 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 16:11:23,605 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2024-11-13 16:11:23,640 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:11:23,641 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 16:11:23,641 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-13 16:11:23,642 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2135252602] [2024-11-13 16:11:23,642 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2135252602] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 16:11:23,642 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 16:11:23,642 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-13 16:11:23,642 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [550278188] [2024-11-13 16:11:23,643 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 16:11:23,645 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-13 16:11:23,645 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-13 16:11:23,646 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-13 16:11:23,646 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 16:11:23,646 INFO L87 Difference]: Start difference. First operand 775 states and 813 transitions. Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 16:11:25,715 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 16:11:25,716 INFO L93 Difference]: Finished difference Result 849 states and 891 transitions. [2024-11-13 16:11:25,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-13 16:11:25,717 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 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 5 [2024-11-13 16:11:25,717 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 16:11:25,721 INFO L225 Difference]: With dead ends: 849 [2024-11-13 16:11:25,721 INFO L226 Difference]: Without dead ends: 849 [2024-11-13 16:11:25,722 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 16:11:25,722 INFO L432 NwaCegarLoop]: 683 mSDtfsCounter, 267 mSDsluCounter, 281 mSDsCounter, 0 mSdLazyCounter, 461 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 267 SdHoareTripleChecker+Valid, 964 SdHoareTripleChecker+Invalid, 475 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 461 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2024-11-13 16:11:25,723 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [267 Valid, 964 Invalid, 475 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 461 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2024-11-13 16:11:25,725 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 849 states. [2024-11-13 16:11:25,770 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 849 to 801. [2024-11-13 16:11:25,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 801 states, 440 states have (on average 1.9772727272727273) internal successors, (870), 796 states have internal predecessors, (870), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-13 16:11:25,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 801 states to 801 states and 876 transitions. [2024-11-13 16:11:25,777 INFO L78 Accepts]: Start accepts. Automaton has 801 states and 876 transitions. Word has length 5 [2024-11-13 16:11:25,777 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 16:11:25,777 INFO L471 AbstractCegarLoop]: Abstraction has 801 states and 876 transitions. [2024-11-13 16:11:25,777 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 16:11:25,778 INFO L276 IsEmpty]: Start isEmpty. Operand 801 states and 876 transitions. [2024-11-13 16:11:25,778 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2024-11-13 16:11:25,779 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 16:11:25,779 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2024-11-13 16:11:25,795 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_590f1fe9-8640-4e47-a434-3444a6035e24/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-13 16:11:25,979 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_590f1fe9-8640-4e47-a434-3444a6035e24/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:11:25,979 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr314REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 422 more)] === [2024-11-13 16:11:25,980 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:11:25,980 INFO L85 PathProgramCache]: Analyzing trace with hash 1422966350, now seen corresponding path program 1 times [2024-11-13 16:11:25,980 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-13 16:11:25,981 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [924822058] [2024-11-13 16:11:25,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:11:25,981 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:11:25,981 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_590f1fe9-8640-4e47-a434-3444a6035e24/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 16:11:25,983 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_590f1fe9-8640-4e47-a434-3444a6035e24/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 16:11:25,985 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_590f1fe9-8640-4e47-a434-3444a6035e24/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-13 16:11:26,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:11:26,094 INFO L255 TraceCheckSpWp]: Trace formula consists of 21 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-13 16:11:26,096 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 16:11:26,167 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:11:26,167 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 16:11:26,168 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-13 16:11:26,168 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [924822058] [2024-11-13 16:11:26,168 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [924822058] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 16:11:26,168 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 16:11:26,169 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-13 16:11:26,169 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1831044356] [2024-11-13 16:11:26,169 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 16:11:26,170 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-13 16:11:26,170 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-13 16:11:26,171 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-13 16:11:26,171 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-13 16:11:26,171 INFO L87 Difference]: Start difference. First operand 801 states and 876 transitions. Second operand has 4 states, 4 states have (on average 1.5) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 16:11:27,046 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 16:11:27,046 INFO L93 Difference]: Finished difference Result 1112 states and 1229 transitions. [2024-11-13 16:11:27,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-13 16:11:27,047 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.5) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2024-11-13 16:11:27,047 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 16:11:27,052 INFO L225 Difference]: With dead ends: 1112 [2024-11-13 16:11:27,052 INFO L226 Difference]: Without dead ends: 1112 [2024-11-13 16:11:27,052 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-13 16:11:27,053 INFO L432 NwaCegarLoop]: 868 mSDtfsCounter, 331 mSDsluCounter, 1490 mSDsCounter, 0 mSdLazyCounter, 257 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 331 SdHoareTripleChecker+Valid, 2358 SdHoareTripleChecker+Invalid, 263 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 257 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-13 16:11:27,053 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [331 Valid, 2358 Invalid, 263 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 257 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-13 16:11:27,056 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1112 states. [2024-11-13 16:11:27,073 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1112 to 893. [2024-11-13 16:11:27,074 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 893 states, 532 states have (on average 1.9210526315789473) internal successors, (1022), 888 states have internal predecessors, (1022), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-13 16:11:27,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 893 states to 893 states and 1028 transitions. [2024-11-13 16:11:27,079 INFO L78 Accepts]: Start accepts. Automaton has 893 states and 1028 transitions. Word has length 6 [2024-11-13 16:11:27,079 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 16:11:27,079 INFO L471 AbstractCegarLoop]: Abstraction has 893 states and 1028 transitions. [2024-11-13 16:11:27,079 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.5) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 16:11:27,080 INFO L276 IsEmpty]: Start isEmpty. Operand 893 states and 1028 transitions. [2024-11-13 16:11:27,080 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2024-11-13 16:11:27,080 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 16:11:27,080 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 16:11:27,095 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_590f1fe9-8640-4e47-a434-3444a6035e24/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-11-13 16:11:27,281 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_590f1fe9-8640-4e47-a434-3444a6035e24/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:11:27,281 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr318ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 422 more)] === [2024-11-13 16:11:27,281 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:11:27,281 INFO L85 PathProgramCache]: Analyzing trace with hash 262687905, now seen corresponding path program 1 times [2024-11-13 16:11:27,282 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-13 16:11:27,282 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2036275485] [2024-11-13 16:11:27,282 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:11:27,282 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:11:27,282 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_590f1fe9-8640-4e47-a434-3444a6035e24/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 16:11:27,287 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_590f1fe9-8640-4e47-a434-3444a6035e24/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 16:11:27,291 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_590f1fe9-8640-4e47-a434-3444a6035e24/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-13 16:11:27,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:11:27,416 INFO L255 TraceCheckSpWp]: Trace formula consists of 26 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-13 16:11:27,418 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 16:11:27,456 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:11:27,456 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 16:11:27,456 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-13 16:11:27,457 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2036275485] [2024-11-13 16:11:27,457 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2036275485] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 16:11:27,457 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 16:11:27,457 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-13 16:11:27,457 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [768128386] [2024-11-13 16:11:27,457 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 16:11:27,457 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-13 16:11:27,458 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-13 16:11:27,458 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-13 16:11:27,458 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-13 16:11:27,458 INFO L87 Difference]: Start difference. First operand 893 states and 1028 transitions. Second operand has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 16:11:27,502 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 16:11:27,503 INFO L93 Difference]: Finished difference Result 893 states and 1027 transitions. [2024-11-13 16:11:27,503 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-13 16:11:27,504 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2024-11-13 16:11:27,504 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 16:11:27,507 INFO L225 Difference]: With dead ends: 893 [2024-11-13 16:11:27,507 INFO L226 Difference]: Without dead ends: 893 [2024-11-13 16:11:27,508 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-13 16:11:27,510 INFO L432 NwaCegarLoop]: 799 mSDtfsCounter, 7 mSDsluCounter, 1594 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 2393 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-13 16:11:27,511 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 2393 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-13 16:11:27,517 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 893 states. [2024-11-13 16:11:27,531 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 893 to 893. [2024-11-13 16:11:27,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 893 states, 532 states have (on average 1.919172932330827) internal successors, (1021), 888 states have internal predecessors, (1021), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-13 16:11:27,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 893 states to 893 states and 1027 transitions. [2024-11-13 16:11:27,537 INFO L78 Accepts]: Start accepts. Automaton has 893 states and 1027 transitions. Word has length 9 [2024-11-13 16:11:27,537 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 16:11:27,537 INFO L471 AbstractCegarLoop]: Abstraction has 893 states and 1027 transitions. [2024-11-13 16:11:27,538 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 16:11:27,540 INFO L276 IsEmpty]: Start isEmpty. Operand 893 states and 1027 transitions. [2024-11-13 16:11:27,540 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2024-11-13 16:11:27,540 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 16:11:27,540 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 16:11:27,562 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_590f1fe9-8640-4e47-a434-3444a6035e24/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-13 16:11:27,741 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_590f1fe9-8640-4e47-a434-3444a6035e24/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:11:27,741 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr424ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 422 more)] === [2024-11-13 16:11:27,742 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:11:27,742 INFO L85 PathProgramCache]: Analyzing trace with hash -1985449156, now seen corresponding path program 1 times [2024-11-13 16:11:27,742 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-13 16:11:27,742 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [767703488] [2024-11-13 16:11:27,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:11:27,743 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:11:27,743 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_590f1fe9-8640-4e47-a434-3444a6035e24/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 16:11:27,745 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_590f1fe9-8640-4e47-a434-3444a6035e24/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 16:11:27,747 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_590f1fe9-8640-4e47-a434-3444a6035e24/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-13 16:11:27,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:11:27,873 INFO L255 TraceCheckSpWp]: Trace formula consists of 36 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-13 16:11:27,875 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 16:11:27,912 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:11:27,912 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 16:11:27,912 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-13 16:11:27,912 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [767703488] [2024-11-13 16:11:27,912 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [767703488] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 16:11:27,912 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 16:11:27,912 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-13 16:11:27,913 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [63097967] [2024-11-13 16:11:27,913 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 16:11:27,913 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-13 16:11:27,913 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-13 16:11:27,913 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-13 16:11:27,914 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 16:11:27,914 INFO L87 Difference]: Start difference. First operand 893 states and 1027 transitions. Second operand has 3 states, 2 states have (on average 6.5) internal successors, (13), 3 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 16:11:29,362 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 16:11:29,362 INFO L93 Difference]: Finished difference Result 895 states and 1028 transitions. [2024-11-13 16:11:29,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-13 16:11:29,363 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 6.5) internal successors, (13), 3 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2024-11-13 16:11:29,363 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 16:11:29,366 INFO L225 Difference]: With dead ends: 895 [2024-11-13 16:11:29,367 INFO L226 Difference]: Without dead ends: 885 [2024-11-13 16:11:29,367 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 16:11:29,368 INFO L432 NwaCegarLoop]: 801 mSDtfsCounter, 0 mSDsluCounter, 432 mSDsCounter, 0 mSdLazyCounter, 370 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1233 SdHoareTripleChecker+Invalid, 370 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 370 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2024-11-13 16:11:29,368 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1233 Invalid, 370 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 370 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2024-11-13 16:11:29,370 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 885 states. [2024-11-13 16:11:29,387 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 885 to 885. [2024-11-13 16:11:29,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 885 states, 524 states have (on average 1.9312977099236641) internal successors, (1012), 880 states have internal predecessors, (1012), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-13 16:11:29,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 885 states to 885 states and 1018 transitions. [2024-11-13 16:11:29,392 INFO L78 Accepts]: Start accepts. Automaton has 885 states and 1018 transitions. Word has length 13 [2024-11-13 16:11:29,392 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 16:11:29,392 INFO L471 AbstractCegarLoop]: Abstraction has 885 states and 1018 transitions. [2024-11-13 16:11:29,392 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 6.5) internal successors, (13), 3 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 16:11:29,393 INFO L276 IsEmpty]: Start isEmpty. Operand 885 states and 1018 transitions. [2024-11-13 16:11:29,393 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2024-11-13 16:11:29,393 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 16:11:29,393 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 16:11:29,424 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_590f1fe9-8640-4e47-a434-3444a6035e24/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-13 16:11:29,597 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_590f1fe9-8640-4e47-a434-3444a6035e24/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:11:29,597 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 422 more)] === [2024-11-13 16:11:29,598 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:11:29,598 INFO L85 PathProgramCache]: Analyzing trace with hash 1612480710, now seen corresponding path program 1 times [2024-11-13 16:11:29,602 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-13 16:11:29,603 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1826034366] [2024-11-13 16:11:29,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:11:29,603 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:11:29,606 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_590f1fe9-8640-4e47-a434-3444a6035e24/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 16:11:29,612 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_590f1fe9-8640-4e47-a434-3444a6035e24/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 16:11:29,615 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_590f1fe9-8640-4e47-a434-3444a6035e24/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-13 16:11:29,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:11:29,791 INFO L255 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-13 16:11:29,793 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 16:11:29,799 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2024-11-13 16:11:29,861 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:11:29,861 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 16:11:29,861 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-13 16:11:29,861 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1826034366] [2024-11-13 16:11:29,861 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1826034366] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 16:11:29,861 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 16:11:29,862 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-13 16:11:29,862 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [768543663] [2024-11-13 16:11:29,862 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 16:11:29,862 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-13 16:11:29,862 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-13 16:11:29,863 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-13 16:11:29,863 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-13 16:11:29,863 INFO L87 Difference]: Start difference. First operand 885 states and 1018 transitions. Second operand has 4 states, 3 states have (on average 5.0) internal successors, (15), 4 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 16:11:32,256 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 16:11:32,256 INFO L93 Difference]: Finished difference Result 870 states and 980 transitions. [2024-11-13 16:11:32,257 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-13 16:11:32,257 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 5.0) internal successors, (15), 4 states have internal predecessors, (15), 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 15 [2024-11-13 16:11:32,258 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 16:11:32,261 INFO L225 Difference]: With dead ends: 870 [2024-11-13 16:11:32,261 INFO L226 Difference]: Without dead ends: 870 [2024-11-13 16:11:32,261 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-13 16:11:32,262 INFO L432 NwaCegarLoop]: 478 mSDtfsCounter, 563 mSDsluCounter, 423 mSDsCounter, 0 mSdLazyCounter, 861 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 566 SdHoareTripleChecker+Valid, 901 SdHoareTripleChecker+Invalid, 889 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 861 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2024-11-13 16:11:32,262 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [566 Valid, 901 Invalid, 889 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 861 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2024-11-13 16:11:32,264 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 870 states. [2024-11-13 16:11:32,278 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 870 to 862. [2024-11-13 16:11:32,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 862 states, 524 states have (on average 1.8435114503816794) internal successors, (966), 857 states have internal predecessors, (966), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-13 16:11:32,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 862 states to 862 states and 972 transitions. [2024-11-13 16:11:32,283 INFO L78 Accepts]: Start accepts. Automaton has 862 states and 972 transitions. Word has length 15 [2024-11-13 16:11:32,284 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 16:11:32,284 INFO L471 AbstractCegarLoop]: Abstraction has 862 states and 972 transitions. [2024-11-13 16:11:32,284 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 5.0) internal successors, (15), 4 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 16:11:32,284 INFO L276 IsEmpty]: Start isEmpty. Operand 862 states and 972 transitions. [2024-11-13 16:11:32,284 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2024-11-13 16:11:32,285 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 16:11:32,285 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 16:11:32,306 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_590f1fe9-8640-4e47-a434-3444a6035e24/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-13 16:11:32,489 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_590f1fe9-8640-4e47-a434-3444a6035e24/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:11:32,490 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 422 more)] === [2024-11-13 16:11:32,490 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:11:32,490 INFO L85 PathProgramCache]: Analyzing trace with hash 1612480711, now seen corresponding path program 1 times [2024-11-13 16:11:32,491 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-13 16:11:32,491 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [526668722] [2024-11-13 16:11:32,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:11:32,492 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:11:32,492 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_590f1fe9-8640-4e47-a434-3444a6035e24/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 16:11:32,494 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_590f1fe9-8640-4e47-a434-3444a6035e24/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 16:11:32,497 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_590f1fe9-8640-4e47-a434-3444a6035e24/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-13 16:11:32,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:11:32,641 INFO L255 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-13 16:11:32,642 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 16:11:32,655 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:11:32,655 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 16:11:32,656 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-13 16:11:32,656 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [526668722] [2024-11-13 16:11:32,656 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [526668722] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 16:11:32,656 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 16:11:32,658 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-13 16:11:32,658 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [270475696] [2024-11-13 16:11:32,658 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 16:11:32,658 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-13 16:11:32,658 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-13 16:11:32,659 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-13 16:11:32,659 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 16:11:32,659 INFO L87 Difference]: Start difference. First operand 862 states and 972 transitions. Second operand has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 16:11:32,700 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 16:11:32,701 INFO L93 Difference]: Finished difference Result 814 states and 910 transitions. [2024-11-13 16:11:32,701 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-13 16:11:32,701 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 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 15 [2024-11-13 16:11:32,702 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 16:11:32,705 INFO L225 Difference]: With dead ends: 814 [2024-11-13 16:11:32,705 INFO L226 Difference]: Without dead ends: 814 [2024-11-13 16:11:32,705 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 16:11:32,707 INFO L432 NwaCegarLoop]: 736 mSDtfsCounter, 61 mSDsluCounter, 683 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 61 SdHoareTripleChecker+Valid, 1419 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-13 16:11:32,708 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [61 Valid, 1419 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-13 16:11:32,710 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 814 states. [2024-11-13 16:11:32,751 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 814 to 814. [2024-11-13 16:11:32,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 814 states, 488 states have (on average 1.8524590163934427) internal successors, (904), 809 states have internal predecessors, (904), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-13 16:11:32,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 814 states to 814 states and 910 transitions. [2024-11-13 16:11:32,757 INFO L78 Accepts]: Start accepts. Automaton has 814 states and 910 transitions. Word has length 15 [2024-11-13 16:11:32,757 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 16:11:32,757 INFO L471 AbstractCegarLoop]: Abstraction has 814 states and 910 transitions. [2024-11-13 16:11:32,757 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 16:11:32,757 INFO L276 IsEmpty]: Start isEmpty. Operand 814 states and 910 transitions. [2024-11-13 16:11:32,758 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2024-11-13 16:11:32,758 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 16:11:32,758 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 16:11:32,779 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_590f1fe9-8640-4e47-a434-3444a6035e24/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-13 16:11:32,960 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_590f1fe9-8640-4e47-a434-3444a6035e24/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:11:32,961 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr31REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 422 more)] === [2024-11-13 16:11:32,961 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:11:32,961 INFO L85 PathProgramCache]: Analyzing trace with hash -889236256, now seen corresponding path program 1 times [2024-11-13 16:11:32,962 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-13 16:11:32,962 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [599313902] [2024-11-13 16:11:32,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:11:32,962 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:11:32,963 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_590f1fe9-8640-4e47-a434-3444a6035e24/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 16:11:32,965 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_590f1fe9-8640-4e47-a434-3444a6035e24/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 16:11:32,968 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_590f1fe9-8640-4e47-a434-3444a6035e24/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-13 16:11:33,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:11:33,110 INFO L255 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-13 16:11:33,112 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 16:11:33,136 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:11:33,136 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 16:11:33,137 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-13 16:11:33,137 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [599313902] [2024-11-13 16:11:33,137 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [599313902] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 16:11:33,137 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 16:11:33,137 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-13 16:11:33,137 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1627720512] [2024-11-13 16:11:33,137 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 16:11:33,137 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-13 16:11:33,138 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-13 16:11:33,138 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-13 16:11:33,138 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-13 16:11:33,138 INFO L87 Difference]: Start difference. First operand 814 states and 910 transitions. Second operand has 4 states, 4 states have (on average 4.25) internal successors, (17), 4 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 16:11:33,246 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 16:11:33,246 INFO L93 Difference]: Finished difference Result 791 states and 866 transitions. [2024-11-13 16:11:33,247 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-13 16:11:33,247 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.25) internal successors, (17), 4 states have internal predecessors, (17), 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 17 [2024-11-13 16:11:33,247 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 16:11:33,250 INFO L225 Difference]: With dead ends: 791 [2024-11-13 16:11:33,250 INFO L226 Difference]: Without dead ends: 791 [2024-11-13 16:11:33,251 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-13 16:11:33,251 INFO L432 NwaCegarLoop]: 698 mSDtfsCounter, 45 mSDsluCounter, 1373 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 2071 SdHoareTripleChecker+Invalid, 59 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-13 16:11:33,251 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [45 Valid, 2071 Invalid, 59 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-13 16:11:33,253 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 791 states. [2024-11-13 16:11:33,264 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 791 to 791. [2024-11-13 16:11:33,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 791 states, 472 states have (on average 1.8220338983050848) internal successors, (860), 786 states have internal predecessors, (860), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-13 16:11:33,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 791 states to 791 states and 866 transitions. [2024-11-13 16:11:33,269 INFO L78 Accepts]: Start accepts. Automaton has 791 states and 866 transitions. Word has length 17 [2024-11-13 16:11:33,269 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 16:11:33,269 INFO L471 AbstractCegarLoop]: Abstraction has 791 states and 866 transitions. [2024-11-13 16:11:33,269 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.25) internal successors, (17), 4 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 16:11:33,270 INFO L276 IsEmpty]: Start isEmpty. Operand 791 states and 866 transitions. [2024-11-13 16:11:33,270 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2024-11-13 16:11:33,271 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 16:11:33,271 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 16:11:33,292 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_590f1fe9-8640-4e47-a434-3444a6035e24/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-11-13 16:11:33,471 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_590f1fe9-8640-4e47-a434-3444a6035e24/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:11:33,471 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr45REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 422 more)] === [2024-11-13 16:11:33,472 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:11:33,472 INFO L85 PathProgramCache]: Analyzing trace with hash 1445969806, now seen corresponding path program 1 times [2024-11-13 16:11:33,472 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-13 16:11:33,472 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [989465778] [2024-11-13 16:11:33,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:11:33,472 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:11:33,472 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_590f1fe9-8640-4e47-a434-3444a6035e24/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 16:11:33,475 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_590f1fe9-8640-4e47-a434-3444a6035e24/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 16:11:33,477 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_590f1fe9-8640-4e47-a434-3444a6035e24/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-13 16:11:33,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:11:33,623 INFO L255 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-13 16:11:33,626 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 16:11:33,641 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2024-11-13 16:11:33,952 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:11:33,954 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 16:11:33,954 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-13 16:11:33,954 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [989465778] [2024-11-13 16:11:33,954 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [989465778] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 16:11:33,954 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 16:11:33,954 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-13 16:11:33,955 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1784778705] [2024-11-13 16:11:33,955 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 16:11:33,955 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-13 16:11:33,955 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-13 16:11:33,955 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-13 16:11:33,956 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-13 16:11:33,957 INFO L87 Difference]: Start difference. First operand 791 states and 866 transitions. Second operand has 4 states, 3 states have (on average 10.333333333333334) internal successors, (31), 4 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 16:11:36,544 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 16:11:36,544 INFO L93 Difference]: Finished difference Result 843 states and 881 transitions. [2024-11-13 16:11:36,545 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-13 16:11:36,546 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 10.333333333333334) internal successors, (31), 4 states have internal predecessors, (31), 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 31 [2024-11-13 16:11:36,546 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 16:11:36,549 INFO L225 Difference]: With dead ends: 843 [2024-11-13 16:11:36,549 INFO L226 Difference]: Without dead ends: 843 [2024-11-13 16:11:36,549 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-13 16:11:36,551 INFO L432 NwaCegarLoop]: 725 mSDtfsCounter, 196 mSDsluCounter, 654 mSDsCounter, 0 mSdLazyCounter, 818 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 196 SdHoareTripleChecker+Valid, 1379 SdHoareTripleChecker+Invalid, 821 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 818 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2024-11-13 16:11:36,552 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [196 Valid, 1379 Invalid, 821 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 818 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2024-11-13 16:11:36,555 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 843 states. [2024-11-13 16:11:36,568 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 843 to 787. [2024-11-13 16:11:36,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 787 states, 472 states have (on average 1.805084745762712) internal successors, (852), 782 states have internal predecessors, (852), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-13 16:11:36,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 787 states to 787 states and 858 transitions. [2024-11-13 16:11:36,574 INFO L78 Accepts]: Start accepts. Automaton has 787 states and 858 transitions. Word has length 31 [2024-11-13 16:11:36,574 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 16:11:36,574 INFO L471 AbstractCegarLoop]: Abstraction has 787 states and 858 transitions. [2024-11-13 16:11:36,574 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 10.333333333333334) internal successors, (31), 4 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 16:11:36,575 INFO L276 IsEmpty]: Start isEmpty. Operand 787 states and 858 transitions. [2024-11-13 16:11:36,577 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2024-11-13 16:11:36,578 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 16:11:36,578 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 16:11:36,600 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_590f1fe9-8640-4e47-a434-3444a6035e24/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-11-13 16:11:36,779 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_590f1fe9-8640-4e47-a434-3444a6035e24/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:11:36,779 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr63REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 422 more)] === [2024-11-13 16:11:36,784 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:11:36,784 INFO L85 PathProgramCache]: Analyzing trace with hash 793949692, now seen corresponding path program 1 times [2024-11-13 16:11:36,785 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-13 16:11:36,785 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1601738017] [2024-11-13 16:11:36,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:11:36,785 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:11:36,785 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_590f1fe9-8640-4e47-a434-3444a6035e24/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 16:11:36,788 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_590f1fe9-8640-4e47-a434-3444a6035e24/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 16:11:36,789 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_590f1fe9-8640-4e47-a434-3444a6035e24/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-13 16:11:37,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:11:37,030 INFO L255 TraceCheckSpWp]: Trace formula consists of 212 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-13 16:11:37,032 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 16:11:37,109 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:11:37,109 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 16:11:37,110 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-13 16:11:37,110 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1601738017] [2024-11-13 16:11:37,110 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1601738017] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 16:11:37,110 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 16:11:37,110 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-13 16:11:37,110 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1586518654] [2024-11-13 16:11:37,110 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 16:11:37,111 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-13 16:11:37,111 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-13 16:11:37,111 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-13 16:11:37,111 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-13 16:11:37,112 INFO L87 Difference]: Start difference. First operand 787 states and 858 transitions. Second operand has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 16:11:37,194 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 16:11:37,194 INFO L93 Difference]: Finished difference Result 775 states and 838 transitions. [2024-11-13 16:11:37,195 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-13 16:11:37,195 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 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 50 [2024-11-13 16:11:37,197 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 16:11:37,199 INFO L225 Difference]: With dead ends: 775 [2024-11-13 16:11:37,200 INFO L226 Difference]: Without dead ends: 775 [2024-11-13 16:11:37,200 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-13 16:11:37,201 INFO L432 NwaCegarLoop]: 696 mSDtfsCounter, 21 mSDsluCounter, 1361 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 2057 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-13 16:11:37,201 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 2057 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-13 16:11:37,203 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 775 states. [2024-11-13 16:11:37,214 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 775 to 775. [2024-11-13 16:11:37,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 775 states, 460 states have (on average 1.808695652173913) internal successors, (832), 770 states have internal predecessors, (832), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-13 16:11:37,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 775 states to 775 states and 838 transitions. [2024-11-13 16:11:37,218 INFO L78 Accepts]: Start accepts. Automaton has 775 states and 838 transitions. Word has length 50 [2024-11-13 16:11:37,219 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 16:11:37,219 INFO L471 AbstractCegarLoop]: Abstraction has 775 states and 838 transitions. [2024-11-13 16:11:37,220 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 16:11:37,220 INFO L276 IsEmpty]: Start isEmpty. Operand 775 states and 838 transitions. [2024-11-13 16:11:37,221 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2024-11-13 16:11:37,222 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 16:11:37,222 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 16:11:37,246 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_590f1fe9-8640-4e47-a434-3444a6035e24/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-11-13 16:11:37,426 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_590f1fe9-8640-4e47-a434-3444a6035e24/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:11:37,426 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr63REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 422 more)] === [2024-11-13 16:11:37,427 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:11:37,427 INFO L85 PathProgramCache]: Analyzing trace with hash -993677776, now seen corresponding path program 1 times [2024-11-13 16:11:37,427 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-13 16:11:37,427 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2120525367] [2024-11-13 16:11:37,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:11:37,428 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:11:37,428 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_590f1fe9-8640-4e47-a434-3444a6035e24/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 16:11:37,429 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_590f1fe9-8640-4e47-a434-3444a6035e24/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 16:11:37,431 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_590f1fe9-8640-4e47-a434-3444a6035e24/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-13 16:11:37,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:11:37,687 INFO L255 TraceCheckSpWp]: Trace formula consists of 236 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-13 16:11:37,691 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 16:11:37,700 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2024-11-13 16:11:38,491 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 16:11:38,493 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 9 [2024-11-13 16:11:38,520 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2024-11-13 16:11:38,521 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2024-11-13 16:11:38,527 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:11:38,528 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 16:11:38,528 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-13 16:11:38,528 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2120525367] [2024-11-13 16:11:38,528 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2120525367] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 16:11:38,528 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 16:11:38,528 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-13 16:11:38,528 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [207316969] [2024-11-13 16:11:38,528 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 16:11:38,529 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-13 16:11:38,529 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-13 16:11:38,529 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-13 16:11:38,529 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-13 16:11:38,529 INFO L87 Difference]: Start difference. First operand 775 states and 838 transitions. Second operand has 5 states, 4 states have (on average 14.5) internal successors, (58), 5 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 16:11:40,798 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 16:11:40,798 INFO L93 Difference]: Finished difference Result 737 states and 800 transitions. [2024-11-13 16:11:40,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-13 16:11:40,799 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 14.5) internal successors, (58), 5 states have internal predecessors, (58), 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 58 [2024-11-13 16:11:40,799 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 16:11:40,801 INFO L225 Difference]: With dead ends: 737 [2024-11-13 16:11:40,801 INFO L226 Difference]: Without dead ends: 737 [2024-11-13 16:11:40,802 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2024-11-13 16:11:40,802 INFO L432 NwaCegarLoop]: 372 mSDtfsCounter, 787 mSDsluCounter, 220 mSDsCounter, 0 mSdLazyCounter, 729 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 790 SdHoareTripleChecker+Valid, 592 SdHoareTripleChecker+Invalid, 776 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 729 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2024-11-13 16:11:40,802 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [790 Valid, 592 Invalid, 776 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [47 Valid, 729 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2024-11-13 16:11:40,804 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 737 states. [2024-11-13 16:11:40,812 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 737 to 700. [2024-11-13 16:11:40,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 700 states, 423 states have (on average 1.702127659574468) internal successors, (720), 695 states have internal predecessors, (720), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-13 16:11:40,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 700 states to 700 states and 726 transitions. [2024-11-13 16:11:40,816 INFO L78 Accepts]: Start accepts. Automaton has 700 states and 726 transitions. Word has length 58 [2024-11-13 16:11:40,816 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 16:11:40,816 INFO L471 AbstractCegarLoop]: Abstraction has 700 states and 726 transitions. [2024-11-13 16:11:40,816 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 14.5) internal successors, (58), 5 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 16:11:40,816 INFO L276 IsEmpty]: Start isEmpty. Operand 700 states and 726 transitions. [2024-11-13 16:11:40,818 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2024-11-13 16:11:40,818 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 16:11:40,818 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 16:11:40,843 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_590f1fe9-8640-4e47-a434-3444a6035e24/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-11-13 16:11:41,023 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_590f1fe9-8640-4e47-a434-3444a6035e24/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:11:41,023 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr68REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 422 more)] === [2024-11-13 16:11:41,024 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:11:41,024 INFO L85 PathProgramCache]: Analyzing trace with hash -1193395836, now seen corresponding path program 1 times [2024-11-13 16:11:41,024 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-13 16:11:41,024 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [437651304] [2024-11-13 16:11:41,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:11:41,024 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:11:41,025 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_590f1fe9-8640-4e47-a434-3444a6035e24/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 16:11:41,027 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_590f1fe9-8640-4e47-a434-3444a6035e24/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 16:11:41,042 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_590f1fe9-8640-4e47-a434-3444a6035e24/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-11-13 16:11:41,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:11:41,301 INFO L255 TraceCheckSpWp]: Trace formula consists of 263 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-13 16:11:41,309 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 16:11:41,324 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2024-11-13 16:11:41,350 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2024-11-13 16:11:41,382 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2024-11-13 16:11:41,397 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:11:41,398 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 16:11:41,398 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-13 16:11:41,399 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [437651304] [2024-11-13 16:11:41,399 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [437651304] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 16:11:41,399 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 16:11:41,399 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-13 16:11:41,399 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [331298075] [2024-11-13 16:11:41,399 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 16:11:41,399 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-13 16:11:41,400 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-13 16:11:41,400 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-13 16:11:41,401 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-13 16:11:41,402 INFO L87 Difference]: Start difference. First operand 700 states and 726 transitions. Second operand has 5 states, 4 states have (on average 15.75) internal successors, (63), 5 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 16:11:43,701 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 16:11:43,701 INFO L93 Difference]: Finished difference Result 699 states and 725 transitions. [2024-11-13 16:11:43,702 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-13 16:11:43,702 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 15.75) internal successors, (63), 5 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 63 [2024-11-13 16:11:43,702 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 16:11:43,704 INFO L225 Difference]: With dead ends: 699 [2024-11-13 16:11:43,704 INFO L226 Difference]: Without dead ends: 699 [2024-11-13 16:11:43,704 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 59 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-13 16:11:43,705 INFO L432 NwaCegarLoop]: 669 mSDtfsCounter, 2 mSDsluCounter, 1007 mSDsCounter, 0 mSdLazyCounter, 1007 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 1676 SdHoareTripleChecker+Invalid, 1008 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1007 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2024-11-13 16:11:43,705 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 1676 Invalid, 1008 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1007 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2024-11-13 16:11:43,706 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 699 states. [2024-11-13 16:11:43,713 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 699 to 699. [2024-11-13 16:11:43,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 699 states, 423 states have (on average 1.6997635933806146) internal successors, (719), 694 states have internal predecessors, (719), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-13 16:11:43,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 699 states to 699 states and 725 transitions. [2024-11-13 16:11:43,717 INFO L78 Accepts]: Start accepts. Automaton has 699 states and 725 transitions. Word has length 63 [2024-11-13 16:11:43,717 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 16:11:43,717 INFO L471 AbstractCegarLoop]: Abstraction has 699 states and 725 transitions. [2024-11-13 16:11:43,718 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 15.75) internal successors, (63), 5 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 16:11:43,718 INFO L276 IsEmpty]: Start isEmpty. Operand 699 states and 725 transitions. [2024-11-13 16:11:43,720 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2024-11-13 16:11:43,720 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 16:11:43,720 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 16:11:43,744 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_590f1fe9-8640-4e47-a434-3444a6035e24/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2024-11-13 16:11:43,920 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_590f1fe9-8640-4e47-a434-3444a6035e24/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:11:43,921 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr69REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 422 more)] === [2024-11-13 16:11:43,921 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:11:43,921 INFO L85 PathProgramCache]: Analyzing trace with hash -1193395835, now seen corresponding path program 1 times [2024-11-13 16:11:43,921 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-13 16:11:43,921 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1892956892] [2024-11-13 16:11:43,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:11:43,922 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:11:43,922 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_590f1fe9-8640-4e47-a434-3444a6035e24/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 16:11:43,924 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_590f1fe9-8640-4e47-a434-3444a6035e24/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 16:11:43,926 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_590f1fe9-8640-4e47-a434-3444a6035e24/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-11-13 16:11:44,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:11:44,179 INFO L255 TraceCheckSpWp]: Trace formula consists of 263 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-11-13 16:11:44,181 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 16:11:44,193 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2024-11-13 16:11:44,216 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2024-11-13 16:11:44,227 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2024-11-13 16:11:44,283 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 9 [2024-11-13 16:11:44,307 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:11:44,307 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 16:11:44,307 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-13 16:11:44,307 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1892956892] [2024-11-13 16:11:44,308 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1892956892] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 16:11:44,308 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 16:11:44,308 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-13 16:11:44,308 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1982818019] [2024-11-13 16:11:44,308 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 16:11:44,308 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-13 16:11:44,308 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-13 16:11:44,309 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-13 16:11:44,309 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-13 16:11:44,309 INFO L87 Difference]: Start difference. First operand 699 states and 725 transitions. Second operand has 5 states, 4 states have (on average 15.75) internal successors, (63), 5 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 16:11:47,133 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 16:11:47,134 INFO L93 Difference]: Finished difference Result 698 states and 724 transitions. [2024-11-13 16:11:47,134 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-13 16:11:47,134 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 15.75) internal successors, (63), 5 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 63 [2024-11-13 16:11:47,135 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 16:11:47,136 INFO L225 Difference]: With dead ends: 698 [2024-11-13 16:11:47,136 INFO L226 Difference]: Without dead ends: 698 [2024-11-13 16:11:47,137 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 59 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-13 16:11:47,137 INFO L432 NwaCegarLoop]: 669 mSDtfsCounter, 1 mSDsluCounter, 1032 mSDsCounter, 0 mSdLazyCounter, 979 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 1701 SdHoareTripleChecker+Invalid, 980 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 979 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2024-11-13 16:11:47,137 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 1701 Invalid, 980 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 979 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2024-11-13 16:11:47,139 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 698 states. [2024-11-13 16:11:47,146 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 698 to 698. [2024-11-13 16:11:47,147 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 698 states, 422 states have (on average 1.7014218009478672) internal successors, (718), 693 states have internal predecessors, (718), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-13 16:11:47,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 698 states to 698 states and 724 transitions. [2024-11-13 16:11:47,150 INFO L78 Accepts]: Start accepts. Automaton has 698 states and 724 transitions. Word has length 63 [2024-11-13 16:11:47,151 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 16:11:47,151 INFO L471 AbstractCegarLoop]: Abstraction has 698 states and 724 transitions. [2024-11-13 16:11:47,151 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 15.75) internal successors, (63), 5 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 16:11:47,151 INFO L276 IsEmpty]: Start isEmpty. Operand 698 states and 724 transitions. [2024-11-13 16:11:47,152 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2024-11-13 16:11:47,152 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 16:11:47,152 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 16:11:47,175 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_590f1fe9-8640-4e47-a434-3444a6035e24/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2024-11-13 16:11:47,355 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_590f1fe9-8640-4e47-a434-3444a6035e24/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:11:47,355 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr72REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 422 more)] === [2024-11-13 16:11:47,355 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:11:47,355 INFO L85 PathProgramCache]: Analyzing trace with hash -1448995765, now seen corresponding path program 1 times [2024-11-13 16:11:47,356 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-13 16:11:47,356 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1192636476] [2024-11-13 16:11:47,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:11:47,356 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:11:47,356 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_590f1fe9-8640-4e47-a434-3444a6035e24/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 16:11:47,375 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_590f1fe9-8640-4e47-a434-3444a6035e24/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 16:11:47,379 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_590f1fe9-8640-4e47-a434-3444a6035e24/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-11-13 16:11:47,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:11:47,628 INFO L255 TraceCheckSpWp]: Trace formula consists of 289 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-13 16:11:47,644 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 16:11:47,659 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2024-11-13 16:11:47,766 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2024-11-13 16:11:47,786 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:11:47,786 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 16:11:47,786 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-13 16:11:47,787 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1192636476] [2024-11-13 16:11:47,788 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1192636476] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 16:11:47,788 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 16:11:47,788 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-13 16:11:47,788 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2007972458] [2024-11-13 16:11:47,788 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 16:11:47,788 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-13 16:11:47,789 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-13 16:11:47,789 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-13 16:11:47,790 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-11-13 16:11:47,790 INFO L87 Difference]: Start difference. First operand 698 states and 724 transitions. Second operand has 7 states, 5 states have (on average 13.8) internal successors, (69), 6 states have internal predecessors, (69), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-13 16:11:50,351 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 16:11:50,351 INFO L93 Difference]: Finished difference Result 710 states and 739 transitions. [2024-11-13 16:11:50,351 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-13 16:11:50,351 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 5 states have (on average 13.8) internal successors, (69), 6 states have internal predecessors, (69), 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 71 [2024-11-13 16:11:50,351 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 16:11:50,355 INFO L225 Difference]: With dead ends: 710 [2024-11-13 16:11:50,355 INFO L226 Difference]: Without dead ends: 710 [2024-11-13 16:11:50,355 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 65 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-11-13 16:11:50,356 INFO L432 NwaCegarLoop]: 661 mSDtfsCounter, 6 mSDsluCounter, 1681 mSDsCounter, 0 mSdLazyCounter, 1015 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 2342 SdHoareTripleChecker+Invalid, 1019 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 1015 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2024-11-13 16:11:50,356 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 2342 Invalid, 1019 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 1015 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2024-11-13 16:11:50,357 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 710 states. [2024-11-13 16:11:50,366 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 710 to 704. [2024-11-13 16:11:50,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 704 states, 427 states have (on average 1.6978922716627636) internal successors, (725), 698 states have internal predecessors, (725), 3 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (6), 4 states have call predecessors, (6), 3 states have call successors, (6) [2024-11-13 16:11:50,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 704 states to 704 states and 734 transitions. [2024-11-13 16:11:50,369 INFO L78 Accepts]: Start accepts. Automaton has 704 states and 734 transitions. Word has length 71 [2024-11-13 16:11:50,369 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 16:11:50,370 INFO L471 AbstractCegarLoop]: Abstraction has 704 states and 734 transitions. [2024-11-13 16:11:50,370 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 5 states have (on average 13.8) internal successors, (69), 6 states have internal predecessors, (69), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-13 16:11:50,370 INFO L276 IsEmpty]: Start isEmpty. Operand 704 states and 734 transitions. [2024-11-13 16:11:50,370 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2024-11-13 16:11:50,370 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 16:11:50,371 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 16:11:50,394 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_590f1fe9-8640-4e47-a434-3444a6035e24/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2024-11-13 16:11:50,574 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_590f1fe9-8640-4e47-a434-3444a6035e24/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:11:50,574 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr73REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 422 more)] === [2024-11-13 16:11:50,575 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:11:50,575 INFO L85 PathProgramCache]: Analyzing trace with hash -1448995764, now seen corresponding path program 1 times [2024-11-13 16:11:50,575 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-13 16:11:50,575 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [539064859] [2024-11-13 16:11:50,575 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:11:50,575 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:11:50,575 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_590f1fe9-8640-4e47-a434-3444a6035e24/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 16:11:50,578 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_590f1fe9-8640-4e47-a434-3444a6035e24/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 16:11:50,579 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_590f1fe9-8640-4e47-a434-3444a6035e24/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-11-13 16:11:50,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:11:50,813 INFO L255 TraceCheckSpWp]: Trace formula consists of 289 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-13 16:11:50,815 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 16:11:50,837 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:11:50,838 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 16:11:50,838 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-13 16:11:50,838 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [539064859] [2024-11-13 16:11:50,838 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [539064859] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 16:11:50,838 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 16:11:50,838 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-13 16:11:50,838 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1370735817] [2024-11-13 16:11:50,838 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 16:11:50,838 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-13 16:11:50,838 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-13 16:11:50,839 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-13 16:11:50,839 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-13 16:11:50,839 INFO L87 Difference]: Start difference. First operand 704 states and 734 transitions. Second operand has 4 states, 4 states have (on average 17.25) internal successors, (69), 4 states have internal predecessors, (69), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-13 16:11:50,881 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 16:11:50,882 INFO L93 Difference]: Finished difference Result 701 states and 728 transitions. [2024-11-13 16:11:50,882 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-13 16:11:50,883 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.25) internal successors, (69), 4 states have internal predecessors, (69), 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 71 [2024-11-13 16:11:50,883 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 16:11:50,885 INFO L225 Difference]: With dead ends: 701 [2024-11-13 16:11:50,885 INFO L226 Difference]: Without dead ends: 701 [2024-11-13 16:11:50,886 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 68 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-13 16:11:50,886 INFO L432 NwaCegarLoop]: 669 mSDtfsCounter, 0 mSDsluCounter, 1333 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 2002 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-13 16:11:50,886 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 2002 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-13 16:11:50,888 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 701 states. [2024-11-13 16:11:50,896 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 701 to 701. [2024-11-13 16:11:50,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 701 states, 424 states have (on average 1.7004716981132075) internal successors, (721), 696 states have internal predecessors, (721), 3 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2024-11-13 16:11:50,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 701 states to 701 states and 728 transitions. [2024-11-13 16:11:50,899 INFO L78 Accepts]: Start accepts. Automaton has 701 states and 728 transitions. Word has length 71 [2024-11-13 16:11:50,899 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 16:11:50,900 INFO L471 AbstractCegarLoop]: Abstraction has 701 states and 728 transitions. [2024-11-13 16:11:50,900 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.25) internal successors, (69), 4 states have internal predecessors, (69), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-13 16:11:50,900 INFO L276 IsEmpty]: Start isEmpty. Operand 701 states and 728 transitions. [2024-11-13 16:11:50,900 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2024-11-13 16:11:50,900 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 16:11:50,901 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 16:11:50,926 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_590f1fe9-8640-4e47-a434-3444a6035e24/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2024-11-13 16:11:51,101 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_590f1fe9-8640-4e47-a434-3444a6035e24/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:11:51,102 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr72REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 422 more)] === [2024-11-13 16:11:51,102 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:11:51,102 INFO L85 PathProgramCache]: Analyzing trace with hash -582575604, now seen corresponding path program 1 times [2024-11-13 16:11:51,103 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-13 16:11:51,103 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1386188673] [2024-11-13 16:11:51,103 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:11:51,103 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:11:51,103 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_590f1fe9-8640-4e47-a434-3444a6035e24/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 16:11:51,105 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_590f1fe9-8640-4e47-a434-3444a6035e24/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 16:11:51,107 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_590f1fe9-8640-4e47-a434-3444a6035e24/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2024-11-13 16:11:51,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:11:51,380 INFO L255 TraceCheckSpWp]: Trace formula consists of 300 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-13 16:11:51,392 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 16:11:51,428 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:11:51,428 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 16:11:51,524 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:11:51,525 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-13 16:11:51,525 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1386188673] [2024-11-13 16:11:51,525 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1386188673] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 16:11:51,525 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-13 16:11:51,525 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2024-11-13 16:11:51,525 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [421218417] [2024-11-13 16:11:51,526 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-13 16:11:51,526 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-13 16:11:51,526 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-13 16:11:51,527 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-13 16:11:51,527 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2024-11-13 16:11:51,527 INFO L87 Difference]: Start difference. First operand 701 states and 728 transitions. Second operand has 8 states, 8 states have (on average 9.25) internal successors, (74), 8 states have internal predecessors, (74), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-13 16:11:51,732 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 16:11:51,732 INFO L93 Difference]: Finished difference Result 713 states and 745 transitions. [2024-11-13 16:11:51,733 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-13 16:11:51,733 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 9.25) internal successors, (74), 8 states have internal predecessors, (74), 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 72 [2024-11-13 16:11:51,733 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 16:11:51,736 INFO L225 Difference]: With dead ends: 713 [2024-11-13 16:11:51,736 INFO L226 Difference]: Without dead ends: 713 [2024-11-13 16:11:51,736 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 145 GetRequests, 136 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=44, Invalid=66, Unknown=0, NotChecked=0, Total=110 [2024-11-13 16:11:51,737 INFO L432 NwaCegarLoop]: 669 mSDtfsCounter, 7 mSDsluCounter, 1998 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 2667 SdHoareTripleChecker+Invalid, 63 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-13 16:11:51,737 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 2667 Invalid, 63 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 56 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-13 16:11:51,738 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 713 states. [2024-11-13 16:11:51,747 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 713 to 711. [2024-11-13 16:11:51,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 711 states, 433 states have (on average 1.699769053117783) internal successors, (736), 705 states have internal predecessors, (736), 3 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2024-11-13 16:11:51,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 711 states to 711 states and 743 transitions. [2024-11-13 16:11:51,750 INFO L78 Accepts]: Start accepts. Automaton has 711 states and 743 transitions. Word has length 72 [2024-11-13 16:11:51,750 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 16:11:51,751 INFO L471 AbstractCegarLoop]: Abstraction has 711 states and 743 transitions. [2024-11-13 16:11:51,751 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.25) internal successors, (74), 8 states have internal predecessors, (74), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-13 16:11:51,751 INFO L276 IsEmpty]: Start isEmpty. Operand 711 states and 743 transitions. [2024-11-13 16:11:51,751 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2024-11-13 16:11:51,751 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 16:11:51,751 INFO L215 NwaCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 16:11:51,776 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_590f1fe9-8640-4e47-a434-3444a6035e24/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2024-11-13 16:11:51,952 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_590f1fe9-8640-4e47-a434-3444a6035e24/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:11:51,952 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr72REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 422 more)] === [2024-11-13 16:11:51,953 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:11:51,954 INFO L85 PathProgramCache]: Analyzing trace with hash -1317667701, now seen corresponding path program 2 times [2024-11-13 16:11:51,954 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-13 16:11:51,954 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [94270290] [2024-11-13 16:11:51,955 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-13 16:11:51,955 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:11:51,955 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_590f1fe9-8640-4e47-a434-3444a6035e24/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 16:11:51,957 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_590f1fe9-8640-4e47-a434-3444a6035e24/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 16:11:51,959 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_590f1fe9-8640-4e47-a434-3444a6035e24/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2024-11-13 16:12:00,823 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-13 16:12:00,823 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 16:12:00,833 INFO L255 TraceCheckSpWp]: Trace formula consists of 333 conjuncts, 17 conjuncts are in the unsatisfiable core [2024-11-13 16:12:00,836 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 16:12:00,978 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2024-11-13 16:12:00,978 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2024-11-13 16:12:01,004 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2024-11-13 16:12:01,234 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-13 16:12:01,234 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 44 treesize of output 43 [2024-11-13 16:12:01,278 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 15 [2024-11-13 16:12:01,308 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-13 16:12:01,309 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 16:12:01,417 INFO L349 Elim1Store]: treesize reduction 7, result has 63.2 percent of original size [2024-11-13 16:12:01,418 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 24 [2024-11-13 16:12:01,484 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-13 16:12:01,484 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [94270290] [2024-11-13 16:12:01,485 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [94270290] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 16:12:01,485 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [337810193] [2024-11-13 16:12:01,485 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-13 16:12:01,485 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-13 16:12:01,485 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_590f1fe9-8640-4e47-a434-3444a6035e24/bin/uautomizer-verify-qhAvR1uOyd/cvc4 [2024-11-13 16:12:01,489 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_590f1fe9-8640-4e47-a434-3444a6035e24/bin/uautomizer-verify-qhAvR1uOyd/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-13 16:12:01,491 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_590f1fe9-8640-4e47-a434-3444a6035e24/bin/uautomizer-verify-qhAvR1uOyd/cvc4 --incremental --print-success --lang smt (19)] Waiting until timeout for monitored process [2024-11-13 16:12:02,346 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-13 16:12:02,346 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 16:12:02,372 INFO L255 TraceCheckSpWp]: Trace formula consists of 333 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-13 16:12:02,373 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 16:12:02,599 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:12:02,599 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 16:12:02,946 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:12:02,946 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [337810193] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 16:12:02,946 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 16:12:02,947 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 8, 8] total 24 [2024-11-13 16:12:02,947 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [359473479] [2024-11-13 16:12:02,947 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 16:12:02,947 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2024-11-13 16:12:02,947 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-13 16:12:02,948 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2024-11-13 16:12:02,949 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=553, Unknown=6, NotChecked=0, Total=650 [2024-11-13 16:12:02,949 INFO L87 Difference]: Start difference. First operand 711 states and 743 transitions. Second operand has 24 states, 23 states have (on average 6.043478260869565) internal successors, (139), 23 states have internal predecessors, (139), 2 states have call successors, (2), 2 states have call predecessors, (2), 3 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-13 16:12:13,783 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 16:12:13,783 INFO L93 Difference]: Finished difference Result 727 states and 766 transitions. [2024-11-13 16:12:13,784 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2024-11-13 16:12:13,784 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 23 states have (on average 6.043478260869565) internal successors, (139), 23 states have internal predecessors, (139), 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 75 [2024-11-13 16:12:13,784 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 16:12:13,787 INFO L225 Difference]: With dead ends: 727 [2024-11-13 16:12:13,787 INFO L226 Difference]: Without dead ends: 723 [2024-11-13 16:12:13,788 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 253 GetRequests, 202 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 487 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=416, Invalid=2332, Unknown=8, NotChecked=0, Total=2756 [2024-11-13 16:12:13,789 INFO L432 NwaCegarLoop]: 446 mSDtfsCounter, 422 mSDsluCounter, 6500 mSDsCounter, 0 mSdLazyCounter, 4962 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 426 SdHoareTripleChecker+Valid, 6946 SdHoareTripleChecker+Invalid, 4980 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 4962 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.6s IncrementalHoareTripleChecker+Time [2024-11-13 16:12:13,790 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [426 Valid, 6946 Invalid, 4980 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [18 Valid, 4962 Invalid, 0 Unknown, 0 Unchecked, 9.6s Time] [2024-11-13 16:12:13,791 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 723 states. [2024-11-13 16:12:13,801 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 723 to 719. [2024-11-13 16:12:13,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 719 states, 442 states have (on average 1.6900452488687783) internal successors, (747), 713 states have internal predecessors, (747), 3 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2024-11-13 16:12:13,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 719 states to 719 states and 754 transitions. [2024-11-13 16:12:13,805 INFO L78 Accepts]: Start accepts. Automaton has 719 states and 754 transitions. Word has length 75 [2024-11-13 16:12:13,805 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 16:12:13,806 INFO L471 AbstractCegarLoop]: Abstraction has 719 states and 754 transitions. [2024-11-13 16:12:13,806 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 23 states have (on average 6.043478260869565) internal successors, (139), 23 states have internal predecessors, (139), 2 states have call successors, (2), 2 states have call predecessors, (2), 3 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-13 16:12:13,806 INFO L276 IsEmpty]: Start isEmpty. Operand 719 states and 754 transitions. [2024-11-13 16:12:13,807 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2024-11-13 16:12:13,807 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 16:12:13,807 INFO L215 NwaCegarLoop]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 16:12:13,837 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_590f1fe9-8640-4e47-a434-3444a6035e24/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2024-11-13 16:12:14,012 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_590f1fe9-8640-4e47-a434-3444a6035e24/bin/uautomizer-verify-qhAvR1uOyd/cvc4 --incremental --print-success --lang smt (19)] Ended with exit code 0 [2024-11-13 16:12:14,207 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_590f1fe9-8640-4e47-a434-3444a6035e24/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_590f1fe9-8640-4e47-a434-3444a6035e24/bin/uautomizer-verify-qhAvR1uOyd/cvc4 --incremental --print-success --lang smt [2024-11-13 16:12:14,208 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr73REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 422 more)] === [2024-11-13 16:12:14,208 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:12:14,208 INFO L85 PathProgramCache]: Analyzing trace with hash -41788180, now seen corresponding path program 1 times [2024-11-13 16:12:14,209 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-13 16:12:14,209 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [48648759] [2024-11-13 16:12:14,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:12:14,209 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:12:14,209 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_590f1fe9-8640-4e47-a434-3444a6035e24/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 16:12:14,210 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_590f1fe9-8640-4e47-a434-3444a6035e24/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 16:12:14,212 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_590f1fe9-8640-4e47-a434-3444a6035e24/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2024-11-13 16:12:14,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:12:14,511 INFO L255 TraceCheckSpWp]: Trace formula consists of 399 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-13 16:12:14,513 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 16:12:14,703 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:12:14,703 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 16:12:15,438 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:12:15,438 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-13 16:12:15,439 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [48648759] [2024-11-13 16:12:15,439 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [48648759] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 16:12:15,439 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-13 16:12:15,439 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 26 [2024-11-13 16:12:15,439 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1763878796] [2024-11-13 16:12:15,439 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-13 16:12:15,439 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2024-11-13 16:12:15,439 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-13 16:12:15,440 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2024-11-13 16:12:15,440 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=193, Invalid=457, Unknown=0, NotChecked=0, Total=650 [2024-11-13 16:12:15,440 INFO L87 Difference]: Start difference. First operand 719 states and 754 transitions. Second operand has 26 states, 26 states have (on average 3.5384615384615383) internal successors, (92), 26 states have internal predecessors, (92), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-13 16:12:17,839 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 16:12:17,839 INFO L93 Difference]: Finished difference Result 743 states and 793 transitions. [2024-11-13 16:12:17,840 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2024-11-13 16:12:17,840 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 3.5384615384615383) internal successors, (92), 26 states have internal predecessors, (92), 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 81 [2024-11-13 16:12:17,841 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 16:12:17,843 INFO L225 Difference]: With dead ends: 743 [2024-11-13 16:12:17,843 INFO L226 Difference]: Without dead ends: 737 [2024-11-13 16:12:17,843 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 181 GetRequests, 136 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 100 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=728, Invalid=1434, Unknown=0, NotChecked=0, Total=2162 [2024-11-13 16:12:17,844 INFO L432 NwaCegarLoop]: 669 mSDtfsCounter, 22 mSDsluCounter, 10643 mSDsCounter, 0 mSdLazyCounter, 598 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 11312 SdHoareTripleChecker+Invalid, 617 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 598 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-11-13 16:12:17,844 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 11312 Invalid, 617 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 598 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-11-13 16:12:17,846 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 737 states. [2024-11-13 16:12:17,858 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 737 to 737. [2024-11-13 16:12:17,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 737 states, 460 states have (on average 1.673913043478261) internal successors, (770), 731 states have internal predecessors, (770), 3 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2024-11-13 16:12:17,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 737 states to 737 states and 777 transitions. [2024-11-13 16:12:17,862 INFO L78 Accepts]: Start accepts. Automaton has 737 states and 777 transitions. Word has length 81 [2024-11-13 16:12:17,862 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 16:12:17,862 INFO L471 AbstractCegarLoop]: Abstraction has 737 states and 777 transitions. [2024-11-13 16:12:17,862 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 3.5384615384615383) internal successors, (92), 26 states have internal predecessors, (92), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-13 16:12:17,862 INFO L276 IsEmpty]: Start isEmpty. Operand 737 states and 777 transitions. [2024-11-13 16:12:17,863 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2024-11-13 16:12:17,863 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 16:12:17,863 INFO L215 NwaCegarLoop]: trace histogram [22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 16:12:17,891 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_590f1fe9-8640-4e47-a434-3444a6035e24/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Ended with exit code 0 [2024-11-13 16:12:18,064 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_590f1fe9-8640-4e47-a434-3444a6035e24/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:12:18,064 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr73REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 422 more)] === [2024-11-13 16:12:18,064 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:12:18,064 INFO L85 PathProgramCache]: Analyzing trace with hash 1790690732, now seen corresponding path program 2 times [2024-11-13 16:12:18,065 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-13 16:12:18,065 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1572620070] [2024-11-13 16:12:18,065 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-13 16:12:18,065 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:12:18,065 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_590f1fe9-8640-4e47-a434-3444a6035e24/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 16:12:18,066 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_590f1fe9-8640-4e47-a434-3444a6035e24/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 16:12:18,068 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_590f1fe9-8640-4e47-a434-3444a6035e24/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2024-11-13 16:12:28,696 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-13 16:12:28,696 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 16:12:28,713 INFO L255 TraceCheckSpWp]: Trace formula consists of 531 conjuncts, 64 conjuncts are in the unsatisfiable core [2024-11-13 16:12:28,720 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 16:12:28,840 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2024-11-13 16:12:28,853 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2024-11-13 16:12:28,854 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2024-11-13 16:12:28,889 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2024-11-13 16:12:28,894 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2024-11-13 16:12:29,024 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 10 [2024-11-13 16:12:29,030 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 3 [2024-11-13 16:12:29,648 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-13 16:12:29,648 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 62 treesize of output 57 [2024-11-13 16:12:29,664 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 13 [2024-11-13 16:12:29,725 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 13 [2024-11-13 16:12:29,736 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 3 [2024-11-13 16:12:29,770 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 231 trivial. 0 not checked. [2024-11-13 16:12:29,770 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 16:12:30,364 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse0 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (and (forall ((v_ArrVal_1456 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_1457 (Array (_ BitVec 32) (_ BitVec 32)))) (bvule (bvadd (_ bv20 32) (select (select (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_#t~mem33#1.base| v_ArrVal_1457) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0)) (select |c_#length| (select (select (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem33#1.base| v_ArrVal_1456) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0)))) (forall ((v_ArrVal_1457 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse1 (select (select (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_#t~mem33#1.base| v_ArrVal_1457) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0))) (bvule (bvadd (_ bv16 32) .cse1) (bvadd (_ bv20 32) .cse1)))))) is different from false [2024-11-13 16:12:30,371 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-13 16:12:30,371 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1572620070] [2024-11-13 16:12:30,371 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1572620070] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 16:12:30,371 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1864217589] [2024-11-13 16:12:30,371 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-13 16:12:30,371 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-13 16:12:30,371 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_590f1fe9-8640-4e47-a434-3444a6035e24/bin/uautomizer-verify-qhAvR1uOyd/cvc4 [2024-11-13 16:12:30,373 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_590f1fe9-8640-4e47-a434-3444a6035e24/bin/uautomizer-verify-qhAvR1uOyd/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-13 16:12:30,374 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_590f1fe9-8640-4e47-a434-3444a6035e24/bin/uautomizer-verify-qhAvR1uOyd/cvc4 --incremental --print-success --lang smt (22)] Waiting until timeout for monitored process [2024-11-13 16:12:31,555 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-13 16:12:31,556 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 16:12:31,568 INFO L255 TraceCheckSpWp]: Trace formula consists of 531 conjuncts, 25 conjuncts are in the unsatisfiable core [2024-11-13 16:12:31,571 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 16:12:32,696 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:12:32,697 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 16:12:35,267 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 16:12:35,267 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1864217589] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 16:12:35,268 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 16:12:35,268 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 26, 26] total 58 [2024-11-13 16:12:35,268 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1195190982] [2024-11-13 16:12:35,268 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 16:12:35,269 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 58 states [2024-11-13 16:12:35,269 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-13 16:12:35,270 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 58 interpolants. [2024-11-13 16:12:35,271 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=699, Invalid=2844, Unknown=1, NotChecked=116, Total=3660 [2024-11-13 16:12:35,271 INFO L87 Difference]: Start difference. First operand 737 states and 777 transitions. Second operand has 58 states, 57 states have (on average 3.0701754385964914) internal successors, (175), 58 states have internal predecessors, (175), 2 states have call successors, (2), 2 states have call predecessors, (2), 3 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-13 16:13:08,614 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 16:13:08,614 INFO L93 Difference]: Finished difference Result 780 states and 850 transitions. [2024-11-13 16:13:08,615 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 82 states. [2024-11-13 16:13:08,615 INFO L78 Accepts]: Start accepts. Automaton has has 58 states, 57 states have (on average 3.0701754385964914) internal successors, (175), 58 states have internal predecessors, (175), 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 93 [2024-11-13 16:13:08,616 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 16:13:08,618 INFO L225 Difference]: With dead ends: 780 [2024-11-13 16:13:08,618 INFO L226 Difference]: Without dead ends: 772 [2024-11-13 16:13:08,621 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 357 GetRequests, 222 SyntacticMatches, 1 SemanticMatches, 134 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 3088 ImplicationChecksByTransitivity, 12.9s TimeCoverageRelationStatistics Valid=3106, Invalid=14987, Unknown=1, NotChecked=266, Total=18360 [2024-11-13 16:13:08,622 INFO L432 NwaCegarLoop]: 446 mSDtfsCounter, 452 mSDsluCounter, 12230 mSDsCounter, 0 mSdLazyCounter, 10687 mSolverCounterSat, 64 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 21.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 455 SdHoareTripleChecker+Valid, 12676 SdHoareTripleChecker+Invalid, 10751 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 64 IncrementalHoareTripleChecker+Valid, 10687 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 23.6s IncrementalHoareTripleChecker+Time [2024-11-13 16:13:08,622 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [455 Valid, 12676 Invalid, 10751 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [64 Valid, 10687 Invalid, 0 Unknown, 0 Unchecked, 23.6s Time] [2024-11-13 16:13:08,623 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 772 states. [2024-11-13 16:13:08,633 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 772 to 770. [2024-11-13 16:13:08,634 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 770 states, 494 states have (on average 1.6417004048582995) internal successors, (811), 764 states have internal predecessors, (811), 3 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2024-11-13 16:13:08,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 770 states to 770 states and 818 transitions. [2024-11-13 16:13:08,636 INFO L78 Accepts]: Start accepts. Automaton has 770 states and 818 transitions. Word has length 93 [2024-11-13 16:13:08,637 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 16:13:08,637 INFO L471 AbstractCegarLoop]: Abstraction has 770 states and 818 transitions. [2024-11-13 16:13:08,637 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 58 states, 57 states have (on average 3.0701754385964914) internal successors, (175), 58 states have internal predecessors, (175), 2 states have call successors, (2), 2 states have call predecessors, (2), 3 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-13 16:13:08,637 INFO L276 IsEmpty]: Start isEmpty. Operand 770 states and 818 transitions. [2024-11-13 16:13:08,638 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2024-11-13 16:13:08,638 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 16:13:08,638 INFO L215 NwaCegarLoop]: trace histogram [44, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 16:13:08,647 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_590f1fe9-8640-4e47-a434-3444a6035e24/bin/uautomizer-verify-qhAvR1uOyd/cvc4 --incremental --print-success --lang smt (22)] Ended with exit code 0 [2024-11-13 16:13:08,876 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_590f1fe9-8640-4e47-a434-3444a6035e24/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Ended with exit code 0 [2024-11-13 16:13:09,039 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_590f1fe9-8640-4e47-a434-3444a6035e24/bin/uautomizer-verify-qhAvR1uOyd/cvc4 --incremental --print-success --lang smt,21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_590f1fe9-8640-4e47-a434-3444a6035e24/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:13:09,040 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr76REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 422 more)] === [2024-11-13 16:13:09,040 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:13:09,040 INFO L85 PathProgramCache]: Analyzing trace with hash 574802551, now seen corresponding path program 1 times [2024-11-13 16:13:09,041 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-13 16:13:09,041 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [703805735] [2024-11-13 16:13:09,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:13:09,041 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:13:09,042 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_590f1fe9-8640-4e47-a434-3444a6035e24/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 16:13:09,044 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_590f1fe9-8640-4e47-a434-3444a6035e24/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 16:13:09,045 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_590f1fe9-8640-4e47-a434-3444a6035e24/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2024-11-13 16:13:09,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:13:09,615 INFO L255 TraceCheckSpWp]: Trace formula consists of 793 conjuncts, 59 conjuncts are in the unsatisfiable core [2024-11-13 16:13:09,625 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 16:13:09,771 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2024-11-13 16:13:09,771 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2024-11-13 16:13:09,791 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2024-11-13 16:13:10,478 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-13 16:13:10,478 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 44 treesize of output 43 [2024-11-13 16:13:10,599 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-13 16:13:10,599 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 44 treesize of output 43 [2024-11-13 16:13:10,621 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 15 [2024-11-13 16:13:10,647 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 946 trivial. 0 not checked. [2024-11-13 16:13:10,647 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 16:13:10,689 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_2082 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (_ bv1 1) (select |c_#valid| (select (select (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem35#1.base| v_ArrVal_2082) |c_ULTIMATE.start_main_~user~0#1.base|) (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|)))))) is different from false [2024-11-13 16:13:10,698 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_2082 (Array (_ BitVec 32) (_ BitVec 32)))) (= (bvadd (_ bv1 1) (select |c_#valid| (let ((.cse0 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (store |c_#memory_$Pointer$#1.base| (select (select |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse0) v_ArrVal_2082) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0)))) (_ bv0 1))) is different from false [2024-11-13 16:13:11,163 INFO L349 Elim1Store]: treesize reduction 7, result has 77.4 percent of original size [2024-11-13 16:13:11,164 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 37 treesize of output 36 [2024-11-13 16:13:11,174 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_2128 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_2082 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_ULTIMATE.start_main_#t~mem33#1.base| (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (let ((.cse0 (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem33#1.base| v_ArrVal_2128))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_2082)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))) is different from false [2024-11-13 16:13:11,176 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-13 16:13:11,176 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [703805735] [2024-11-13 16:13:11,176 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [703805735] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 16:13:11,176 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1512326624] [2024-11-13 16:13:11,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:13:11,176 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-13 16:13:11,176 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_590f1fe9-8640-4e47-a434-3444a6035e24/bin/uautomizer-verify-qhAvR1uOyd/cvc4 [2024-11-13 16:13:11,179 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_590f1fe9-8640-4e47-a434-3444a6035e24/bin/uautomizer-verify-qhAvR1uOyd/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-13 16:13:11,180 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_590f1fe9-8640-4e47-a434-3444a6035e24/bin/uautomizer-verify-qhAvR1uOyd/cvc4 --incremental --print-success --lang smt (24)] Waiting until timeout for monitored process [2024-11-13 16:13:14,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:13:14,549 INFO L255 TraceCheckSpWp]: Trace formula consists of 793 conjuncts, 63 conjuncts are in the unsatisfiable core [2024-11-13 16:13:14,559 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 16:13:14,612 INFO L349 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2024-11-13 16:13:14,613 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 20 [2024-11-13 16:13:15,127 INFO L349 Elim1Store]: treesize reduction 54, result has 29.9 percent of original size [2024-11-13 16:13:15,127 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 26 treesize of output 43 [2024-11-13 16:13:15,205 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2024-11-13 16:13:15,452 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 16 [2024-11-13 16:13:17,333 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-13 16:13:17,333 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 54 treesize of output 51 [2024-11-13 16:13:17,606 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-13 16:13:17,607 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 54 treesize of output 51 [2024-11-13 16:13:17,645 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 43 treesize of output 19 [2024-11-13 16:13:17,729 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 946 trivial. 0 not checked. [2024-11-13 16:13:17,729 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 16:13:17,745 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_2535 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (select |c_#valid| (select (select (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem35#1.base| v_ArrVal_2535) |c_ULTIMATE.start_main_~user~0#1.base|) (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (_ bv1 1)))) is different from false [2024-11-13 16:13:17,755 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_2535 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (_ bv1 1) (select |c_#valid| (let ((.cse0 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (store |c_#memory_$Pointer$#1.base| (select (select |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse0) v_ArrVal_2535) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0)))))) is different from false [2024-11-13 16:13:18,167 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_2581 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_2535 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (_ bv1 1) (select |c_#valid| (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (let ((.cse0 (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem33#1.base| v_ArrVal_2581))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_2535)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))))) is different from false [2024-11-13 16:13:18,169 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1512326624] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 16:13:18,169 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-13 16:13:18,169 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 9] total 21 [2024-11-13 16:13:18,170 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1417592032] [2024-11-13 16:13:18,170 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-13 16:13:18,170 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2024-11-13 16:13:18,170 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-13 16:13:18,171 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2024-11-13 16:13:18,171 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=427, Unknown=6, NotChecked=282, Total=812 [2024-11-13 16:13:18,171 INFO L87 Difference]: Start difference. First operand 770 states and 818 transitions. Second operand has 22 states, 19 states have (on average 7.7894736842105265) internal successors, (148), 21 states have internal predecessors, (148), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-13 16:13:27,140 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 16:13:27,141 INFO L93 Difference]: Finished difference Result 1419 states and 1512 transitions. [2024-11-13 16:13:27,141 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2024-11-13 16:13:27,141 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 19 states have (on average 7.7894736842105265) internal successors, (148), 21 states have internal predecessors, (148), 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 118 [2024-11-13 16:13:27,141 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 16:13:27,144 INFO L225 Difference]: With dead ends: 1419 [2024-11-13 16:13:27,144 INFO L226 Difference]: Without dead ends: 1419 [2024-11-13 16:13:27,144 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 263 GetRequests, 220 SyntacticMatches, 1 SemanticMatches, 42 ConstructedPredicates, 6 IntricatePredicates, 0 DeprecatedPredicates, 343 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=216, Invalid=1208, Unknown=6, NotChecked=462, Total=1892 [2024-11-13 16:13:27,144 INFO L432 NwaCegarLoop]: 352 mSDtfsCounter, 1568 mSDsluCounter, 3372 mSDsCounter, 0 mSdLazyCounter, 3798 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1574 SdHoareTripleChecker+Valid, 3724 SdHoareTripleChecker+Invalid, 3827 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 3798 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.4s IncrementalHoareTripleChecker+Time [2024-11-13 16:13:27,145 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1574 Valid, 3724 Invalid, 3827 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 3798 Invalid, 0 Unknown, 0 Unchecked, 8.4s Time] [2024-11-13 16:13:27,146 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1419 states. [2024-11-13 16:13:27,158 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1419 to 769. [2024-11-13 16:13:27,159 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 769 states, 494 states have (on average 1.639676113360324) internal successors, (810), 763 states have internal predecessors, (810), 3 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2024-11-13 16:13:27,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 769 states to 769 states and 817 transitions. [2024-11-13 16:13:27,161 INFO L78 Accepts]: Start accepts. Automaton has 769 states and 817 transitions. Word has length 118 [2024-11-13 16:13:27,161 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 16:13:27,161 INFO L471 AbstractCegarLoop]: Abstraction has 769 states and 817 transitions. [2024-11-13 16:13:27,162 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 19 states have (on average 7.7894736842105265) internal successors, (148), 21 states have internal predecessors, (148), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-13 16:13:27,162 INFO L276 IsEmpty]: Start isEmpty. Operand 769 states and 817 transitions. [2024-11-13 16:13:27,163 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2024-11-13 16:13:27,163 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 16:13:27,163 INFO L215 NwaCegarLoop]: trace histogram [44, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 16:13:27,176 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_590f1fe9-8640-4e47-a434-3444a6035e24/bin/uautomizer-verify-qhAvR1uOyd/cvc4 --incremental --print-success --lang smt (24)] Ended with exit code 0 [2024-11-13 16:13:27,383 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_590f1fe9-8640-4e47-a434-3444a6035e24/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Ended with exit code 0 [2024-11-13 16:13:27,563 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_590f1fe9-8640-4e47-a434-3444a6035e24/bin/uautomizer-verify-qhAvR1uOyd/cvc4 --incremental --print-success --lang smt,23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_590f1fe9-8640-4e47-a434-3444a6035e24/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:13:27,564 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr77REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 422 more)] === [2024-11-13 16:13:27,564 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:13:27,564 INFO L85 PathProgramCache]: Analyzing trace with hash 574802552, now seen corresponding path program 1 times [2024-11-13 16:13:27,565 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-13 16:13:27,565 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [889800916] [2024-11-13 16:13:27,565 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:13:27,565 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:13:27,565 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_590f1fe9-8640-4e47-a434-3444a6035e24/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 16:13:27,567 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_590f1fe9-8640-4e47-a434-3444a6035e24/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 16:13:27,568 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_590f1fe9-8640-4e47-a434-3444a6035e24/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2024-11-13 16:13:28,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:13:28,089 INFO L255 TraceCheckSpWp]: Trace formula consists of 793 conjuncts, 111 conjuncts are in the unsatisfiable core [2024-11-13 16:13:28,104 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 16:13:28,275 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2024-11-13 16:13:28,276 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2024-11-13 16:13:28,284 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2024-11-13 16:13:28,358 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2024-11-13 16:13:28,370 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2024-11-13 16:13:28,522 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 10 [2024-11-13 16:13:28,528 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 3 [2024-11-13 16:13:29,382 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-13 16:13:29,383 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 62 treesize of output 57 [2024-11-13 16:13:29,400 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 13 [2024-11-13 16:13:29,549 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-13 16:13:29,549 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 62 treesize of output 57 [2024-11-13 16:13:29,561 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 13 [2024-11-13 16:13:29,589 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 13 [2024-11-13 16:13:29,599 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 3 [2024-11-13 16:13:29,630 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 946 trivial. 0 not checked. [2024-11-13 16:13:29,630 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 16:13:29,811 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse0 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (and (forall ((v_ArrVal_3033 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_3032 (Array (_ BitVec 32) (_ BitVec 32)))) (bvule (bvadd (_ bv8 32) (select (select (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_#t~mem35#1.base| v_ArrVal_3033) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0)) (select |c_#length| (select (select (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem35#1.base| v_ArrVal_3032) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0)))) (forall ((v_ArrVal_3033 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse1 (select (select (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_#t~mem35#1.base| v_ArrVal_3033) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0))) (bvule (bvadd (_ bv4 32) .cse1) (bvadd (_ bv8 32) .cse1)))))) is different from false [2024-11-13 16:13:29,849 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$#1.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (and (forall ((v_ArrVal_3033 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_3032 (Array (_ BitVec 32) (_ BitVec 32)))) (bvule (bvadd (_ bv8 32) (select (select (store |c_#memory_$Pointer$#1.offset| .cse0 v_ArrVal_3033) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)) (select |c_#length| (select (select (store |c_#memory_$Pointer$#1.base| .cse0 v_ArrVal_3032) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))) (forall ((v_ArrVal_3033 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse2 (select (select (store |c_#memory_$Pointer$#1.offset| .cse0 v_ArrVal_3033) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (bvule (bvadd (_ bv4 32) .cse2) (bvadd (_ bv8 32) .cse2))))))) is different from false [2024-11-13 16:13:31,483 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (and (forall ((v_ArrVal_3125 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_3124 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_3033 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (select (store (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_#t~mem33#1.base| v_ArrVal_3125) (select (select (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem33#1.base| v_ArrVal_3124) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_3033) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (bvule (bvadd (_ bv4 32) .cse0) (bvadd (_ bv8 32) .cse0)))) (forall ((v_ArrVal_3125 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_3124 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_3033 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_3032 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse3 (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem33#1.base| v_ArrVal_3124))) (let ((.cse2 (select (select .cse3 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (bvule (bvadd (_ bv8 32) (select (select (store (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_#t~mem33#1.base| v_ArrVal_3125) .cse2 v_ArrVal_3033) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)) (select |c_#length| (select (select (store .cse3 .cse2 v_ArrVal_3032) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))))))) is different from false [2024-11-13 16:13:31,491 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-13 16:13:31,491 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [889800916] [2024-11-13 16:13:31,492 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [889800916] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 16:13:31,492 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [567585855] [2024-11-13 16:13:31,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:13:31,492 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-13 16:13:31,492 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_590f1fe9-8640-4e47-a434-3444a6035e24/bin/uautomizer-verify-qhAvR1uOyd/cvc4 [2024-11-13 16:13:31,494 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_590f1fe9-8640-4e47-a434-3444a6035e24/bin/uautomizer-verify-qhAvR1uOyd/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-13 16:13:31,496 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_590f1fe9-8640-4e47-a434-3444a6035e24/bin/uautomizer-verify-qhAvR1uOyd/cvc4 --incremental --print-success --lang smt (26)] Waiting until timeout for monitored process [2024-11-13 16:13:34,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:13:34,430 INFO L255 TraceCheckSpWp]: Trace formula consists of 793 conjuncts, 112 conjuncts are in the unsatisfiable core [2024-11-13 16:13:34,444 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 16:13:34,448 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2024-11-13 16:13:34,595 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2024-11-13 16:13:34,614 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2024-11-13 16:13:34,614 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2024-11-13 16:13:34,633 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2024-11-13 16:13:34,644 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2024-11-13 16:13:34,720 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 10 [2024-11-13 16:13:34,727 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 3 [2024-11-13 16:13:35,512 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-13 16:13:35,512 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 62 treesize of output 57 [2024-11-13 16:13:35,521 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 13 [2024-11-13 16:13:35,593 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-13 16:13:35,594 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 62 treesize of output 57 [2024-11-13 16:13:35,602 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 13 [2024-11-13 16:13:35,628 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 13 [2024-11-13 16:13:35,635 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 3 [2024-11-13 16:13:35,639 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 946 trivial. 0 not checked. [2024-11-13 16:13:35,639 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 16:13:35,698 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse0 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (and (forall ((v_ArrVal_3578 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_3577 (Array (_ BitVec 32) (_ BitVec 32)))) (bvule (bvadd (_ bv8 32) (select (select (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_#t~mem35#1.base| v_ArrVal_3577) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0)) (select |c_#length| (select (select (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem35#1.base| v_ArrVal_3578) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0)))) (forall ((v_ArrVal_3577 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse1 (select (select (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_#t~mem35#1.base| v_ArrVal_3577) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0))) (bvule (bvadd (_ bv4 32) .cse1) (bvadd (_ bv8 32) .cse1)))))) is different from false [2024-11-13 16:13:35,725 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$#1.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (and (forall ((v_ArrVal_3577 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (select (store |c_#memory_$Pointer$#1.offset| .cse1 v_ArrVal_3577) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (bvule (bvadd (_ bv4 32) .cse0) (bvadd (_ bv8 32) .cse0)))) (forall ((v_ArrVal_3578 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_3577 (Array (_ BitVec 32) (_ BitVec 32)))) (bvule (bvadd (_ bv8 32) (select (select (store |c_#memory_$Pointer$#1.offset| .cse1 v_ArrVal_3577) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2)) (select |c_#length| (select (select (store |c_#memory_$Pointer$#1.base| .cse1 v_ArrVal_3578) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))))))) is different from false [2024-11-13 16:13:37,162 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (and (forall ((v_ArrVal_3669 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_3577 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_3670 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (select (store (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_#t~mem33#1.base| v_ArrVal_3670) (select (select (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem33#1.base| v_ArrVal_3669) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_3577) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (bvule (bvadd .cse0 (_ bv4 32)) (bvadd .cse0 (_ bv8 32))))) (forall ((v_ArrVal_3669 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_3578 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_3577 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_3670 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse3 (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem33#1.base| v_ArrVal_3669))) (let ((.cse2 (select (select .cse3 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (bvule (bvadd (select (select (store (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_#t~mem33#1.base| v_ArrVal_3670) .cse2 v_ArrVal_3577) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) (_ bv8 32)) (select |c_#length| (select (select (store .cse3 .cse2 v_ArrVal_3578) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))))))) is different from false [2024-11-13 16:13:37,169 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [567585855] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 16:13:37,169 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-13 16:13:37,169 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9] total 10 [2024-11-13 16:13:37,169 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1113680154] [2024-11-13 16:13:37,169 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-13 16:13:37,170 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-13 16:13:37,170 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-13 16:13:37,170 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-13 16:13:37,170 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=132, Unknown=6, NotChecked=162, Total=342 [2024-11-13 16:13:37,170 INFO L87 Difference]: Start difference. First operand 769 states and 817 transitions. Second operand has 11 states, 9 states have (on average 11.444444444444445) internal successors, (103), 11 states have internal predecessors, (103), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-13 16:13:44,969 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 16:13:44,969 INFO L93 Difference]: Finished difference Result 768 states and 816 transitions. [2024-11-13 16:13:44,970 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-13 16:13:44,970 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 9 states have (on average 11.444444444444445) internal successors, (103), 11 states have internal predecessors, (103), 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 118 [2024-11-13 16:13:44,970 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 16:13:44,973 INFO L225 Difference]: With dead ends: 768 [2024-11-13 16:13:44,973 INFO L226 Difference]: Without dead ends: 768 [2024-11-13 16:13:44,973 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 254 GetRequests, 228 SyntacticMatches, 3 SemanticMatches, 23 ConstructedPredicates, 6 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=77, Invalid=283, Unknown=6, NotChecked=234, Total=600 [2024-11-13 16:13:44,974 INFO L432 NwaCegarLoop]: 446 mSDtfsCounter, 381 mSDsluCounter, 2041 mSDsCounter, 0 mSdLazyCounter, 3066 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 383 SdHoareTripleChecker+Valid, 2487 SdHoareTripleChecker+Invalid, 3073 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 3066 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.5s IncrementalHoareTripleChecker+Time [2024-11-13 16:13:44,974 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [383 Valid, 2487 Invalid, 3073 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 3066 Invalid, 0 Unknown, 0 Unchecked, 7.5s Time] [2024-11-13 16:13:44,976 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 768 states. [2024-11-13 16:13:44,985 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 768 to 768. [2024-11-13 16:13:44,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 768 states, 494 states have (on average 1.6376518218623481) internal successors, (809), 762 states have internal predecessors, (809), 3 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2024-11-13 16:13:44,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 768 states to 768 states and 816 transitions. [2024-11-13 16:13:44,988 INFO L78 Accepts]: Start accepts. Automaton has 768 states and 816 transitions. Word has length 118 [2024-11-13 16:13:44,989 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 16:13:44,989 INFO L471 AbstractCegarLoop]: Abstraction has 768 states and 816 transitions. [2024-11-13 16:13:44,989 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 9 states have (on average 11.444444444444445) internal successors, (103), 11 states have internal predecessors, (103), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-13 16:13:44,989 INFO L276 IsEmpty]: Start isEmpty. Operand 768 states and 816 transitions. [2024-11-13 16:13:44,990 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2024-11-13 16:13:44,991 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 16:13:44,991 INFO L215 NwaCegarLoop]: trace histogram [44, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 16:13:45,025 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_590f1fe9-8640-4e47-a434-3444a6035e24/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Ended with exit code 0 [2024-11-13 16:13:45,202 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_590f1fe9-8640-4e47-a434-3444a6035e24/bin/uautomizer-verify-qhAvR1uOyd/cvc4 --incremental --print-success --lang smt (26)] Ended with exit code 0 [2024-11-13 16:13:45,391 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_590f1fe9-8640-4e47-a434-3444a6035e24/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_590f1fe9-8640-4e47-a434-3444a6035e24/bin/uautomizer-verify-qhAvR1uOyd/cvc4 --incremental --print-success --lang smt [2024-11-13 16:13:45,392 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr80REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 422 more)] === [2024-11-13 16:13:45,392 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:13:45,392 INFO L85 PathProgramCache]: Analyzing trace with hash -91520334, now seen corresponding path program 1 times [2024-11-13 16:13:45,393 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-13 16:13:45,393 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1498907996] [2024-11-13 16:13:45,393 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:13:45,393 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:13:45,393 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_590f1fe9-8640-4e47-a434-3444a6035e24/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 16:13:45,399 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_590f1fe9-8640-4e47-a434-3444a6035e24/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 16:13:45,401 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_590f1fe9-8640-4e47-a434-3444a6035e24/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2024-11-13 16:13:45,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:13:45,992 INFO L255 TraceCheckSpWp]: Trace formula consists of 822 conjuncts, 61 conjuncts are in the unsatisfiable core [2024-11-13 16:13:46,000 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 16:13:46,108 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2024-11-13 16:13:46,108 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2024-11-13 16:13:46,131 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2024-11-13 16:13:46,708 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-13 16:13:46,708 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 44 treesize of output 43 [2024-11-13 16:13:46,826 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-13 16:13:46,826 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 44 treesize of output 43 [2024-11-13 16:13:46,906 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-13 16:13:46,906 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 44 treesize of output 43 [2024-11-13 16:13:46,928 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 15 [2024-11-13 16:13:46,952 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 946 trivial. 0 not checked. [2024-11-13 16:13:46,952 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 16:13:46,991 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_4091 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (_ bv1 1) (select |c_#valid| (select (select (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem36#1.base| v_ArrVal_4091) |c_ULTIMATE.start_main_~user~0#1.base|) (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|)))))) is different from false [2024-11-13 16:13:47,000 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_4091 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (_ bv1 1) (select |c_#valid| (let ((.cse0 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (store |c_#memory_$Pointer$#1.base| (select (select |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse0) v_ArrVal_4091) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0)))))) is different from false [2024-11-13 16:13:47,014 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_4090 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_4091 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (_ bv1 1) (select |c_#valid| (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (let ((.cse0 (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem35#1.base| v_ArrVal_4090))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_4091)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))))) is different from false [2024-11-13 16:13:47,024 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_4090 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_4091 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (_ bv1 1) (select |c_#valid| (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (let ((.cse0 (store |c_#memory_$Pointer$#1.base| (select (select |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_4090))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_4091)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))))) is different from false [2024-11-13 16:13:47,500 INFO L349 Elim1Store]: treesize reduction 7, result has 87.3 percent of original size [2024-11-13 16:13:47,500 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 61 treesize of output 60 [2024-11-13 16:13:47,515 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_4090 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_4091 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_4137 (Array (_ BitVec 32) (_ BitVec 32)))) (= (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (let ((.cse0 (let ((.cse2 (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem33#1.base| v_ArrVal_4137))) (store .cse2 (select (select .cse2 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_4090)))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_4091)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)) |c_ULTIMATE.start_main_#t~mem33#1.base|)) is different from false [2024-11-13 16:13:47,518 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-13 16:13:47,518 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1498907996] [2024-11-13 16:13:47,518 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1498907996] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 16:13:47,518 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1362752734] [2024-11-13 16:13:47,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:13:47,518 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-13 16:13:47,518 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_590f1fe9-8640-4e47-a434-3444a6035e24/bin/uautomizer-verify-qhAvR1uOyd/cvc4 [2024-11-13 16:13:47,520 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_590f1fe9-8640-4e47-a434-3444a6035e24/bin/uautomizer-verify-qhAvR1uOyd/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-13 16:13:47,523 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_590f1fe9-8640-4e47-a434-3444a6035e24/bin/uautomizer-verify-qhAvR1uOyd/cvc4 --incremental --print-success --lang smt (28)] Waiting until timeout for monitored process [2024-11-13 16:14:00,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:14:00,143 INFO L255 TraceCheckSpWp]: Trace formula consists of 822 conjuncts, 65 conjuncts are in the unsatisfiable core [2024-11-13 16:14:00,152 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 16:14:00,207 INFO L349 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2024-11-13 16:14:00,208 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 20 [2024-11-13 16:14:00,646 INFO L349 Elim1Store]: treesize reduction 54, result has 29.9 percent of original size [2024-11-13 16:14:00,646 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 26 treesize of output 43 [2024-11-13 16:14:00,735 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2024-11-13 16:14:00,996 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 16 [2024-11-13 16:14:02,671 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-13 16:14:02,672 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 54 treesize of output 51 [2024-11-13 16:14:02,929 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-13 16:14:02,929 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 54 treesize of output 51 [2024-11-13 16:14:03,106 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-13 16:14:03,106 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 54 treesize of output 51 [2024-11-13 16:14:03,166 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 43 treesize of output 19 [2024-11-13 16:14:03,257 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 946 trivial. 0 not checked. [2024-11-13 16:14:03,257 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 16:14:03,384 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_4560 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (select |c_#valid| (let ((.cse0 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (store |c_#memory_$Pointer$#1.base| (select (select |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse0) v_ArrVal_4560) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0))) (_ bv1 1)))) is different from false [2024-11-13 16:14:03,402 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_4559 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_4560 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (_ bv1 1) (select |c_#valid| (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (let ((.cse0 (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem35#1.base| v_ArrVal_4559))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_4560)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))))) is different from false [2024-11-13 16:14:03,415 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_4559 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_4560 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (_ bv1 1) (select |c_#valid| (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (let ((.cse0 (store |c_#memory_$Pointer$#1.base| (select (select |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_4559))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_4560)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))))) is different from false [2024-11-13 16:14:03,917 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_4606 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_4559 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_4560 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (_ bv1 1) (select |c_#valid| (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (let ((.cse0 (let ((.cse2 (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem33#1.base| v_ArrVal_4606))) (store .cse2 (select (select .cse2 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_4559)))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_4560)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))))) is different from false [2024-11-13 16:14:03,920 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1362752734] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 16:14:03,921 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-13 16:14:03,921 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 10] total 23 [2024-11-13 16:14:03,921 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [143929762] [2024-11-13 16:14:03,921 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-13 16:14:03,921 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2024-11-13 16:14:03,921 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-13 16:14:03,922 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2024-11-13 16:14:03,922 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=122, Invalid=546, Unknown=18, NotChecked=504, Total=1190 [2024-11-13 16:14:03,922 INFO L87 Difference]: Start difference. First operand 768 states and 816 transitions. Second operand has 24 states, 21 states have (on average 7.333333333333333) internal successors, (154), 23 states have internal predecessors, (154), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-13 16:14:16,508 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 16:14:16,509 INFO L93 Difference]: Finished difference Result 1415 states and 1508 transitions. [2024-11-13 16:14:16,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2024-11-13 16:14:16,509 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 21 states have (on average 7.333333333333333) internal successors, (154), 23 states have internal predecessors, (154), 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 121 [2024-11-13 16:14:16,510 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 16:14:16,517 INFO L225 Difference]: With dead ends: 1415 [2024-11-13 16:14:16,519 INFO L226 Difference]: Without dead ends: 1415 [2024-11-13 16:14:16,522 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 276 GetRequests, 226 SyntacticMatches, 1 SemanticMatches, 49 ConstructedPredicates, 9 IntricatePredicates, 0 DeprecatedPredicates, 423 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=254, Invalid=1482, Unknown=22, NotChecked=792, Total=2550 [2024-11-13 16:14:16,524 INFO L432 NwaCegarLoop]: 351 mSDtfsCounter, 1250 mSDsluCounter, 4117 mSDsCounter, 0 mSdLazyCounter, 4678 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1256 SdHoareTripleChecker+Valid, 4468 SdHoareTripleChecker+Invalid, 4703 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 4678 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.8s IncrementalHoareTripleChecker+Time [2024-11-13 16:14:16,525 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1256 Valid, 4468 Invalid, 4703 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [25 Valid, 4678 Invalid, 0 Unknown, 0 Unchecked, 11.8s Time] [2024-11-13 16:14:16,527 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1415 states. [2024-11-13 16:14:16,547 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1415 to 767. [2024-11-13 16:14:16,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 767 states, 494 states have (on average 1.6356275303643724) internal successors, (808), 761 states have internal predecessors, (808), 3 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2024-11-13 16:14:16,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 767 states to 767 states and 815 transitions. [2024-11-13 16:14:16,551 INFO L78 Accepts]: Start accepts. Automaton has 767 states and 815 transitions. Word has length 121 [2024-11-13 16:14:16,551 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 16:14:16,551 INFO L471 AbstractCegarLoop]: Abstraction has 767 states and 815 transitions. [2024-11-13 16:14:16,552 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 21 states have (on average 7.333333333333333) internal successors, (154), 23 states have internal predecessors, (154), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-13 16:14:16,552 INFO L276 IsEmpty]: Start isEmpty. Operand 767 states and 815 transitions. [2024-11-13 16:14:16,554 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2024-11-13 16:14:16,555 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 16:14:16,555 INFO L215 NwaCegarLoop]: trace histogram [44, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 16:14:16,584 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_590f1fe9-8640-4e47-a434-3444a6035e24/bin/uautomizer-verify-qhAvR1uOyd/cvc4 --incremental --print-success --lang smt (28)] Ended with exit code 0 [2024-11-13 16:14:16,782 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_590f1fe9-8640-4e47-a434-3444a6035e24/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Ended with exit code 0 [2024-11-13 16:14:16,955 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_590f1fe9-8640-4e47-a434-3444a6035e24/bin/uautomizer-verify-qhAvR1uOyd/cvc4 --incremental --print-success --lang smt,27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_590f1fe9-8640-4e47-a434-3444a6035e24/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:14:16,956 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr81REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 422 more)] === [2024-11-13 16:14:16,956 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:14:16,956 INFO L85 PathProgramCache]: Analyzing trace with hash -91520333, now seen corresponding path program 1 times [2024-11-13 16:14:16,957 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-13 16:14:16,957 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [129423315] [2024-11-13 16:14:16,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:14:16,957 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:14:16,957 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_590f1fe9-8640-4e47-a434-3444a6035e24/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 16:14:16,960 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_590f1fe9-8640-4e47-a434-3444a6035e24/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 16:14:16,961 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_590f1fe9-8640-4e47-a434-3444a6035e24/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2024-11-13 16:14:17,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:14:17,698 INFO L255 TraceCheckSpWp]: Trace formula consists of 822 conjuncts, 114 conjuncts are in the unsatisfiable core [2024-11-13 16:14:17,709 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 16:14:17,836 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2024-11-13 16:14:17,836 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2024-11-13 16:14:17,845 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2024-11-13 16:14:17,882 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2024-11-13 16:14:17,892 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2024-11-13 16:14:18,059 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 10 [2024-11-13 16:14:18,065 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 3 [2024-11-13 16:14:18,965 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-13 16:14:18,966 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 62 treesize of output 57 [2024-11-13 16:14:18,977 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 13 [2024-11-13 16:14:19,185 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-13 16:14:19,185 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 62 treesize of output 57 [2024-11-13 16:14:19,200 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 13 [2024-11-13 16:14:19,347 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-13 16:14:19,347 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 62 treesize of output 57 [2024-11-13 16:14:19,358 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 13 [2024-11-13 16:14:19,393 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 13 [2024-11-13 16:14:19,402 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 3 [2024-11-13 16:14:19,456 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 946 trivial. 0 not checked. [2024-11-13 16:14:19,456 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 16:14:19,706 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (and (forall ((v_ArrVal_5075 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (select (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_#t~mem36#1.base| v_ArrVal_5075) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (bvule (bvadd (_ bv8 32) .cse0) (bvadd (_ bv12 32) .cse0)))) (forall ((v_ArrVal_5074 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_5075 (Array (_ BitVec 32) (_ BitVec 32)))) (bvule (bvadd (_ bv12 32) (select (select (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_#t~mem36#1.base| v_ArrVal_5075) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)) (select |c_#length| (select (select (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem36#1.base| v_ArrVal_5074) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))))) is different from false [2024-11-13 16:14:19,749 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$#1.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (and (forall ((v_ArrVal_5074 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_5075 (Array (_ BitVec 32) (_ BitVec 32)))) (bvule (bvadd (_ bv12 32) (select (select (store |c_#memory_$Pointer$#1.offset| .cse0 v_ArrVal_5075) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)) (select |c_#length| (select (select (store |c_#memory_$Pointer$#1.base| .cse0 v_ArrVal_5074) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))) (forall ((v_ArrVal_5075 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse2 (select (select (store |c_#memory_$Pointer$#1.offset| .cse0 v_ArrVal_5075) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (bvule (bvadd (_ bv8 32) .cse2) (bvadd (_ bv12 32) .cse2))))))) is different from false [2024-11-13 16:14:20,607 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$#1.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (and (forall ((v_ArrVal_5072 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_5073 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_5074 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_5075 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse3 (store |c_#memory_$Pointer$#1.base| .cse0 v_ArrVal_5073))) (let ((.cse1 (select (select .cse3 |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (bvule (bvadd (select (select (store (store |c_#memory_$Pointer$#1.offset| .cse0 v_ArrVal_5072) .cse1 v_ArrVal_5075) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2) (_ bv12 32)) (select |c_#length| (select (select (store .cse3 .cse1 v_ArrVal_5074) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2)))))) (forall ((v_ArrVal_5072 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_5073 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_5075 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse4 (select (select (store (store |c_#memory_$Pointer$#1.offset| .cse0 v_ArrVal_5072) (select (select (store |c_#memory_$Pointer$#1.base| .cse0 v_ArrVal_5073) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2) v_ArrVal_5075) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (bvule (bvadd .cse4 (_ bv8 32)) (bvadd .cse4 (_ bv12 32)))))))) is different from false [2024-11-13 16:14:22,413 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse3 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (and (forall ((v_ArrVal_5072 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_5073 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_5075 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_5166 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_5167 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (select (let ((.cse2 (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem33#1.base| v_ArrVal_5166))) (let ((.cse1 (select (select .cse2 |c_ULTIMATE.start_main_~user~0#1.base|) .cse3))) (store (store (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_#t~mem33#1.base| v_ArrVal_5167) .cse1 v_ArrVal_5072) (select (select (store .cse2 .cse1 v_ArrVal_5073) |c_ULTIMATE.start_main_~user~0#1.base|) .cse3) v_ArrVal_5075))) |c_ULTIMATE.start_main_~user~0#1.base|) .cse3))) (bvule (bvadd (_ bv8 32) .cse0) (bvadd (_ bv12 32) .cse0)))) (forall ((v_ArrVal_5072 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_5073 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_5074 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_5075 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_5166 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_5167 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse7 (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem33#1.base| v_ArrVal_5166))) (let ((.cse4 (select (select .cse7 |c_ULTIMATE.start_main_~user~0#1.base|) .cse3))) (let ((.cse6 (store .cse7 .cse4 v_ArrVal_5073))) (let ((.cse5 (select (select .cse6 |c_ULTIMATE.start_main_~user~0#1.base|) .cse3))) (bvule (bvadd (_ bv12 32) (select (select (store (store (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_#t~mem33#1.base| v_ArrVal_5167) .cse4 v_ArrVal_5072) .cse5 v_ArrVal_5075) |c_ULTIMATE.start_main_~user~0#1.base|) .cse3)) (select |c_#length| (select (select (store .cse6 .cse5 v_ArrVal_5074) |c_ULTIMATE.start_main_~user~0#1.base|) .cse3)))))))))) is different from false [2024-11-13 16:14:22,428 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-13 16:14:22,428 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [129423315] [2024-11-13 16:14:22,429 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [129423315] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 16:14:22,429 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1044818656] [2024-11-13 16:14:22,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:14:22,429 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-13 16:14:22,429 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_590f1fe9-8640-4e47-a434-3444a6035e24/bin/uautomizer-verify-qhAvR1uOyd/cvc4 [2024-11-13 16:14:22,431 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_590f1fe9-8640-4e47-a434-3444a6035e24/bin/uautomizer-verify-qhAvR1uOyd/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-13 16:14:22,433 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_590f1fe9-8640-4e47-a434-3444a6035e24/bin/uautomizer-verify-qhAvR1uOyd/cvc4 --incremental --print-success --lang smt (30)] Waiting until timeout for monitored process [2024-11-13 16:14:37,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:14:37,663 INFO L255 TraceCheckSpWp]: Trace formula consists of 822 conjuncts, 117 conjuncts are in the unsatisfiable core [2024-11-13 16:14:37,675 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 16:14:37,678 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2024-11-13 16:14:37,828 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2024-11-13 16:14:37,843 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2024-11-13 16:14:37,844 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2024-11-13 16:14:37,860 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2024-11-13 16:14:37,875 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2024-11-13 16:14:37,946 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 10 [2024-11-13 16:14:37,951 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 3 [2024-11-13 16:14:38,808 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-13 16:14:38,809 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 62 treesize of output 57 [2024-11-13 16:14:38,822 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 13 [2024-11-13 16:14:38,932 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-13 16:14:38,933 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 62 treesize of output 57 [2024-11-13 16:14:38,945 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 13 [2024-11-13 16:14:39,014 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-13 16:14:39,015 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 62 treesize of output 57 [2024-11-13 16:14:39,029 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 13 [2024-11-13 16:14:39,059 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 13 [2024-11-13 16:14:39,068 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 3 [2024-11-13 16:14:39,069 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 946 trivial. 0 not checked. [2024-11-13 16:14:39,069 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 16:14:39,134 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse0 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (and (forall ((v_ArrVal_5638 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_5637 (Array (_ BitVec 32) (_ BitVec 32)))) (bvule (bvadd (select (select (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_#t~mem36#1.base| v_ArrVal_5637) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0) (_ bv12 32)) (select |c_#length| (select (select (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem36#1.base| v_ArrVal_5638) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0)))) (forall ((v_ArrVal_5637 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse1 (select (select (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_#t~mem36#1.base| v_ArrVal_5637) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0))) (bvule (bvadd .cse1 (_ bv8 32)) (bvadd .cse1 (_ bv12 32))))))) is different from false [2024-11-13 16:14:39,165 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$#1.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (and (forall ((v_ArrVal_5638 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_5637 (Array (_ BitVec 32) (_ BitVec 32)))) (bvule (bvadd (select (select (store |c_#memory_$Pointer$#1.offset| .cse0 v_ArrVal_5637) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) (_ bv12 32)) (select |c_#length| (select (select (store |c_#memory_$Pointer$#1.base| .cse0 v_ArrVal_5638) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))) (forall ((v_ArrVal_5637 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse2 (select (select (store |c_#memory_$Pointer$#1.offset| .cse0 v_ArrVal_5637) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (bvule (bvadd .cse2 (_ bv8 32)) (bvadd .cse2 (_ bv12 32)))))))) is different from false [2024-11-13 16:14:39,263 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (and (forall ((v_ArrVal_5635 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_5636 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_5637 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (select (store (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_#t~mem35#1.base| v_ArrVal_5636) (select (select (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem35#1.base| v_ArrVal_5635) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_5637) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (bvule (bvadd (_ bv8 32) .cse0) (bvadd (_ bv12 32) .cse0)))) (forall ((v_ArrVal_5638 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_5635 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_5636 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_5637 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse3 (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem35#1.base| v_ArrVal_5635))) (let ((.cse2 (select (select .cse3 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (bvule (bvadd (_ bv12 32) (select (select (store (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_#t~mem35#1.base| v_ArrVal_5636) .cse2 v_ArrVal_5637) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)) (select |c_#length| (select (select (store .cse3 .cse2 v_ArrVal_5638) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))))))) is different from false [2024-11-13 16:14:39,309 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$#1.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (and (forall ((v_ArrVal_5638 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_5635 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_5636 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_5637 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse3 (store |c_#memory_$Pointer$#1.base| .cse0 v_ArrVal_5635))) (let ((.cse1 (select (select .cse3 |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (bvule (bvadd (_ bv12 32) (select (select (store (store |c_#memory_$Pointer$#1.offset| .cse0 v_ArrVal_5636) .cse1 v_ArrVal_5637) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2)) (select |c_#length| (select (select (store .cse3 .cse1 v_ArrVal_5638) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2)))))) (forall ((v_ArrVal_5635 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_5636 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_5637 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse4 (select (select (store (store |c_#memory_$Pointer$#1.offset| .cse0 v_ArrVal_5636) (select (select (store |c_#memory_$Pointer$#1.base| .cse0 v_ArrVal_5635) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2) v_ArrVal_5637) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (bvule (bvadd (_ bv8 32) .cse4) (bvadd (_ bv12 32) .cse4))))))) is different from false [2024-11-13 16:14:47,619 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1044818656] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 16:14:47,619 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-13 16:14:47,619 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10] total 11 [2024-11-13 16:14:47,619 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1896294339] [2024-11-13 16:14:47,620 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-13 16:14:47,620 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-13 16:14:47,620 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-13 16:14:47,620 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-13 16:14:47,621 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=189, Unknown=27, NotChecked=280, Total=552 [2024-11-13 16:14:47,621 INFO L87 Difference]: Start difference. First operand 767 states and 815 transitions. Second operand has 12 states, 10 states have (on average 10.6) internal successors, (106), 12 states have internal predecessors, (106), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-13 16:15:50,336 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 16:15:50,336 INFO L93 Difference]: Finished difference Result 766 states and 814 transitions. [2024-11-13 16:15:50,337 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-13 16:15:50,338 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 10 states have (on average 10.6) internal successors, (106), 12 states have internal predecessors, (106), 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 121 [2024-11-13 16:15:50,338 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 16:15:50,340 INFO L225 Difference]: With dead ends: 766 [2024-11-13 16:15:50,340 INFO L226 Difference]: Without dead ends: 766 [2024-11-13 16:15:50,341 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 267 GetRequests, 235 SyntacticMatches, 3 SemanticMatches, 29 ConstructedPredicates, 8 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 13.3s TimeCoverageRelationStatistics Valid=100, Invalid=406, Unknown=32, NotChecked=392, Total=930 [2024-11-13 16:15:50,341 INFO L432 NwaCegarLoop]: 445 mSDtfsCounter, 379 mSDsluCounter, 1539 mSDsCounter, 0 mSdLazyCounter, 2250 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 56.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 381 SdHoareTripleChecker+Valid, 1984 SdHoareTripleChecker+Invalid, 2257 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 2250 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 57.6s IncrementalHoareTripleChecker+Time [2024-11-13 16:15:50,342 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [381 Valid, 1984 Invalid, 2257 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 2250 Invalid, 0 Unknown, 0 Unchecked, 57.6s Time] [2024-11-13 16:15:50,343 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 766 states. [2024-11-13 16:15:50,351 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 766 to 766. [2024-11-13 16:15:50,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 766 states, 494 states have (on average 1.6336032388663968) internal successors, (807), 760 states have internal predecessors, (807), 3 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2024-11-13 16:15:50,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 766 states to 766 states and 814 transitions. [2024-11-13 16:15:50,354 INFO L78 Accepts]: Start accepts. Automaton has 766 states and 814 transitions. Word has length 121 [2024-11-13 16:15:50,354 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 16:15:50,354 INFO L471 AbstractCegarLoop]: Abstraction has 766 states and 814 transitions. [2024-11-13 16:15:50,355 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 10 states have (on average 10.6) internal successors, (106), 12 states have internal predecessors, (106), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-13 16:15:50,355 INFO L276 IsEmpty]: Start isEmpty. Operand 766 states and 814 transitions. [2024-11-13 16:15:50,356 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2024-11-13 16:15:50,356 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 16:15:50,357 INFO L215 NwaCegarLoop]: trace histogram [44, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 16:15:50,396 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_590f1fe9-8640-4e47-a434-3444a6035e24/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Ended with exit code 0 [2024-11-13 16:15:50,578 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_590f1fe9-8640-4e47-a434-3444a6035e24/bin/uautomizer-verify-qhAvR1uOyd/cvc4 --incremental --print-success --lang smt (30)] Ended with exit code 0 [2024-11-13 16:15:50,757 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_590f1fe9-8640-4e47-a434-3444a6035e24/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,30 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_590f1fe9-8640-4e47-a434-3444a6035e24/bin/uautomizer-verify-qhAvR1uOyd/cvc4 --incremental --print-success --lang smt [2024-11-13 16:15:50,758 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr84REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 422 more)] === [2024-11-13 16:15:50,758 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:15:50,758 INFO L85 PathProgramCache]: Analyzing trace with hash 822261694, now seen corresponding path program 1 times [2024-11-13 16:15:50,759 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-13 16:15:50,759 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1614518748] [2024-11-13 16:15:50,759 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:15:50,759 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:15:50,759 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_590f1fe9-8640-4e47-a434-3444a6035e24/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 16:15:50,761 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_590f1fe9-8640-4e47-a434-3444a6035e24/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 16:15:50,762 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_590f1fe9-8640-4e47-a434-3444a6035e24/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2024-11-13 16:15:51,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:15:51,597 INFO L255 TraceCheckSpWp]: Trace formula consists of 851 conjuncts, 63 conjuncts are in the unsatisfiable core [2024-11-13 16:15:51,606 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 16:15:54,267 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2024-11-13 16:15:54,267 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2024-11-13 16:15:54,624 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2024-11-13 16:15:59,914 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-13 16:15:59,914 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 31 treesize of output 32 [2024-11-13 16:16:00,760 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-13 16:16:00,760 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 31 treesize of output 32 [2024-11-13 16:16:01,647 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-13 16:16:01,648 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 44 treesize of output 43 [2024-11-13 16:16:03,386 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-13 16:16:03,386 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 44 treesize of output 43 [2024-11-13 16:16:03,632 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 15 [2024-11-13 16:16:04,154 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 946 trivial. 0 not checked. [2024-11-13 16:16:04,154 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 16:16:05,840 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_6167 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (_ bv1 1) (select |c_#valid| (let ((.cse0 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (store |c_#memory_$Pointer$#1.base| (select (select |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse0) v_ArrVal_6167) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0)))))) is different from false [2024-11-13 16:16:06,144 INFO L349 Elim1Store]: treesize reduction 7, result has 77.4 percent of original size [2024-11-13 16:16:06,144 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 37 treesize of output 36 [2024-11-13 16:16:06,231 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_6166 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_6167 (Array (_ BitVec 32) (_ BitVec 32)))) (= (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (let ((.cse0 (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem36#1.base| v_ArrVal_6166))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_6167)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)) |c_ULTIMATE.start_main_#t~mem36#1.base|)) is different from false [2024-11-13 16:16:06,347 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_6166 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_6167 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (let ((.cse2 (select (select |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (= (select (select (let ((.cse0 (store |c_#memory_$Pointer$#1.base| .cse2 v_ArrVal_6166))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_6167)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) .cse2)))) is different from false [2024-11-13 16:16:06,527 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_6165 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_6166 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_6167 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse2 (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem35#1.base| v_ArrVal_6165)) (.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (let ((.cse3 (select (select .cse2 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (= (select (select (let ((.cse0 (store .cse2 .cse3 v_ArrVal_6166))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_6167)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) .cse3)))) is different from false [2024-11-13 16:16:06,640 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_6165 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_6166 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_6167 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse2 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (let ((.cse3 (store |c_#memory_$Pointer$#1.base| (select (select |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse2) v_ArrVal_6165))) (let ((.cse0 (select (select .cse3 |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (= .cse0 (select (select (let ((.cse1 (store .cse3 .cse0 v_ArrVal_6166))) (store .cse1 (select (select .cse1 |c_ULTIMATE.start_main_~user~0#1.base|) .cse2) v_ArrVal_6167)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2)))))) is different from false [2024-11-13 16:16:09,790 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_6213 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_6165 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_6166 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_6167 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse2 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (let ((.cse3 (let ((.cse4 (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem33#1.base| v_ArrVal_6213))) (store .cse4 (select (select .cse4 |c_ULTIMATE.start_main_~user~0#1.base|) .cse2) v_ArrVal_6165)))) (let ((.cse0 (select (select .cse3 |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (= .cse0 (select (select (let ((.cse1 (store .cse3 .cse0 v_ArrVal_6166))) (store .cse1 (select (select .cse1 |c_ULTIMATE.start_main_~user~0#1.base|) .cse2) v_ArrVal_6167)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2)))))) is different from false [2024-11-13 16:16:09,825 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-13 16:16:09,825 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1614518748] [2024-11-13 16:16:09,825 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1614518748] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 16:16:09,825 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [938138886] [2024-11-13 16:16:09,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:16:09,825 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-13 16:16:09,825 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_590f1fe9-8640-4e47-a434-3444a6035e24/bin/uautomizer-verify-qhAvR1uOyd/cvc4 [2024-11-13 16:16:09,830 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_590f1fe9-8640-4e47-a434-3444a6035e24/bin/uautomizer-verify-qhAvR1uOyd/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-13 16:16:09,831 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_590f1fe9-8640-4e47-a434-3444a6035e24/bin/uautomizer-verify-qhAvR1uOyd/cvc4 --incremental --print-success --lang smt (32)] Waiting until timeout for monitored process [2024-11-13 16:16:26,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:16:26,805 INFO L255 TraceCheckSpWp]: Trace formula consists of 851 conjuncts, 67 conjuncts are in the unsatisfiable core [2024-11-13 16:16:26,814 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 16:16:27,727 INFO L349 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2024-11-13 16:16:27,727 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 20 [2024-11-13 16:16:34,462 INFO L349 Elim1Store]: treesize reduction 54, result has 29.9 percent of original size [2024-11-13 16:16:34,462 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 26 treesize of output 43 [2024-11-13 16:16:35,686 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2024-11-13 16:16:38,819 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 16 [2024-11-13 16:16:56,759 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-13 16:16:56,760 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 54 treesize of output 51 [2024-11-13 16:16:59,741 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-13 16:16:59,741 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 54 treesize of output 51 [2024-11-13 16:17:01,865 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-13 16:17:01,865 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 54 treesize of output 51 [2024-11-13 16:17:04,053 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-13 16:17:04,053 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 54 treesize of output 51 [2024-11-13 16:17:04,650 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 43 treesize of output 19 [2024-11-13 16:17:05,850 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 946 trivial. 0 not checked. [2024-11-13 16:17:05,850 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 16:17:06,085 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_6652 (Array (_ BitVec 32) (_ BitVec 32)))) (= (bvadd (_ bv1 1) (select |c_#valid| (select (select (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem37#1.base| v_ArrVal_6652) |c_ULTIMATE.start_main_~user~0#1.base|) (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|)))) (_ bv0 1))) is different from false [2024-11-13 16:17:06,197 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_6652 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (_ bv1 1) (select |c_#valid| (let ((.cse0 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (store |c_#memory_$Pointer$#1.base| (select (select |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse0) v_ArrVal_6652) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0)))))) is different from false [2024-11-13 16:17:06,361 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_6651 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_6652 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (_ bv1 1) (select |c_#valid| (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (let ((.cse0 (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem36#1.base| v_ArrVal_6651))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_6652)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))))) is different from false [2024-11-13 16:17:06,475 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_6651 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_6652 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (_ bv1 1) (select |c_#valid| (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (let ((.cse0 (store |c_#memory_$Pointer$#1.base| (select (select |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_6651))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_6652)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))))) is different from false [2024-11-13 16:17:06,642 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_6650 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_6651 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_6652 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (_ bv1 1) (select |c_#valid| (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (let ((.cse0 (let ((.cse2 (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem35#1.base| v_ArrVal_6650))) (store .cse2 (select (select .cse2 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_6651)))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_6652)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))))) is different from false [2024-11-13 16:17:06,760 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_6650 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_6651 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_6652 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (_ bv1 1) (select |c_#valid| (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (let ((.cse0 (let ((.cse2 (store |c_#memory_$Pointer$#1.base| (select (select |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_6650))) (store .cse2 (select (select .cse2 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_6651)))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_6652)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))))) is different from false [2024-11-13 16:17:09,828 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_6698 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_6650 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_6651 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_6652 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (_ bv1 1) (select |c_#valid| (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (let ((.cse0 (let ((.cse2 (let ((.cse3 (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem33#1.base| v_ArrVal_6698))) (store .cse3 (select (select .cse3 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_6650)))) (store .cse2 (select (select .cse2 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_6651)))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_6652)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))))) is different from false [2024-11-13 16:17:09,856 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [938138886] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 16:17:09,856 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-13 16:17:09,856 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 11] total 24 [2024-11-13 16:17:09,856 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [838640292] [2024-11-13 16:17:09,856 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-13 16:17:09,857 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2024-11-13 16:17:09,857 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-13 16:17:09,858 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2024-11-13 16:17:09,858 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=140, Invalid=595, Unknown=19, NotChecked=806, Total=1560 [2024-11-13 16:17:09,859 INFO L87 Difference]: Start difference. First operand 766 states and 814 transitions. Second operand has 25 states, 22 states have (on average 7.2727272727272725) internal successors, (160), 25 states have internal predecessors, (160), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-13 16:19:12,420 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 16:19:12,421 INFO L93 Difference]: Finished difference Result 1411 states and 1504 transitions. [2024-11-13 16:19:12,421 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2024-11-13 16:19:12,421 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 22 states have (on average 7.2727272727272725) internal successors, (160), 25 states have internal predecessors, (160), 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 124 [2024-11-13 16:19:12,422 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 16:19:12,424 INFO L225 Difference]: With dead ends: 1411 [2024-11-13 16:19:12,424 INFO L226 Difference]: Without dead ends: 1411 [2024-11-13 16:19:12,425 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 285 GetRequests, 233 SyntacticMatches, 1 SemanticMatches, 51 ConstructedPredicates, 13 IntricatePredicates, 0 DeprecatedPredicates, 369 ImplicationChecksByTransitivity, 22.9s TimeCoverageRelationStatistics Valid=248, Invalid=1341, Unknown=23, NotChecked=1144, Total=2756 [2024-11-13 16:19:12,426 INFO L432 NwaCegarLoop]: 351 mSDtfsCounter, 1529 mSDsluCounter, 4286 mSDsCounter, 0 mSdLazyCounter, 4804 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 114.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1535 SdHoareTripleChecker+Valid, 4637 SdHoareTripleChecker+Invalid, 4833 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 4804 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 116.4s IncrementalHoareTripleChecker+Time [2024-11-13 16:19:12,426 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1535 Valid, 4637 Invalid, 4833 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [29 Valid, 4804 Invalid, 0 Unknown, 0 Unchecked, 116.4s Time] [2024-11-13 16:19:12,427 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1411 states. [2024-11-13 16:19:12,437 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1411 to 765. [2024-11-13 16:19:12,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 765 states, 494 states have (on average 1.631578947368421) internal successors, (806), 759 states have internal predecessors, (806), 3 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2024-11-13 16:19:12,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 765 states to 765 states and 813 transitions. [2024-11-13 16:19:12,440 INFO L78 Accepts]: Start accepts. Automaton has 765 states and 813 transitions. Word has length 124 [2024-11-13 16:19:12,440 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 16:19:12,440 INFO L471 AbstractCegarLoop]: Abstraction has 765 states and 813 transitions. [2024-11-13 16:19:12,441 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 22 states have (on average 7.2727272727272725) internal successors, (160), 25 states have internal predecessors, (160), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-13 16:19:12,441 INFO L276 IsEmpty]: Start isEmpty. Operand 765 states and 813 transitions. [2024-11-13 16:19:12,442 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2024-11-13 16:19:12,442 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 16:19:12,442 INFO L215 NwaCegarLoop]: trace histogram [44, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 16:19:12,473 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_590f1fe9-8640-4e47-a434-3444a6035e24/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Ended with exit code 0 [2024-11-13 16:19:12,664 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_590f1fe9-8640-4e47-a434-3444a6035e24/bin/uautomizer-verify-qhAvR1uOyd/cvc4 --incremental --print-success --lang smt (32)] Ended with exit code 0 [2024-11-13 16:19:12,843 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_590f1fe9-8640-4e47-a434-3444a6035e24/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,32 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_590f1fe9-8640-4e47-a434-3444a6035e24/bin/uautomizer-verify-qhAvR1uOyd/cvc4 --incremental --print-success --lang smt [2024-11-13 16:19:12,843 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr85REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 422 more)] === [2024-11-13 16:19:12,843 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:19:12,843 INFO L85 PathProgramCache]: Analyzing trace with hash 822261695, now seen corresponding path program 1 times [2024-11-13 16:19:12,844 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-13 16:19:12,844 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [114623485] [2024-11-13 16:19:12,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:19:12,844 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:19:12,844 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_590f1fe9-8640-4e47-a434-3444a6035e24/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 16:19:12,846 INFO L229 MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_590f1fe9-8640-4e47-a434-3444a6035e24/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 16:19:12,847 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_590f1fe9-8640-4e47-a434-3444a6035e24/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Waiting until timeout for monitored process [2024-11-13 16:19:13,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:19:13,615 INFO L255 TraceCheckSpWp]: Trace formula consists of 851 conjuncts, 117 conjuncts are in the unsatisfiable core [2024-11-13 16:19:13,628 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 16:19:16,535 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2024-11-13 16:19:16,536 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2024-11-13 16:19:16,632 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2024-11-13 16:19:17,071 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2024-11-13 16:19:17,121 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2024-11-13 16:19:18,744 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 10 [2024-11-13 16:19:18,795 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 3 [2024-11-13 16:19:28,924 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-13 16:19:28,924 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 62 treesize of output 57 [2024-11-13 16:19:29,024 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 13 [2024-11-13 16:19:30,673 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-13 16:19:30,673 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 62 treesize of output 57 [2024-11-13 16:19:30,768 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 13 [2024-11-13 16:19:32,173 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-13 16:19:32,173 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 62 treesize of output 57 [2024-11-13 16:19:32,276 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 13 [2024-11-13 16:19:33,970 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-13 16:19:33,970 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 62 treesize of output 57 [2024-11-13 16:19:34,087 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 13 [2024-11-13 16:19:34,435 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 13 [2024-11-13 16:19:34,534 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 3 [2024-11-13 16:19:35,052 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 946 trivial. 0 not checked. [2024-11-13 16:19:35,052 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 16:19:36,624 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse0 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (and (forall ((v_ArrVal_7184 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7183 (Array (_ BitVec 32) (_ BitVec 32)))) (bvule (bvadd (_ bv24 32) (select (select (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_#t~mem37#1.base| v_ArrVal_7184) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0)) (select |c_#length| (select (select (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem37#1.base| v_ArrVal_7183) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0)))) (forall ((v_ArrVal_7184 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse1 (select (select (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_#t~mem37#1.base| v_ArrVal_7184) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0))) (bvule (bvadd (_ bv20 32) .cse1) (bvadd (_ bv24 32) .cse1)))))) is different from false [2024-11-13 16:19:36,804 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$#1.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (and (forall ((v_ArrVal_7184 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (select (store |c_#memory_$Pointer$#1.offset| .cse1 v_ArrVal_7184) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (bvule (bvadd (_ bv20 32) .cse0) (bvadd (_ bv24 32) .cse0)))) (forall ((v_ArrVal_7184 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7183 (Array (_ BitVec 32) (_ BitVec 32)))) (bvule (bvadd (_ bv24 32) (select (select (store |c_#memory_$Pointer$#1.offset| .cse1 v_ArrVal_7184) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2)) (select |c_#length| (select (select (store |c_#memory_$Pointer$#1.base| .cse1 v_ArrVal_7183) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))))))) is different from false [2024-11-13 16:19:37,135 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (and (forall ((v_ArrVal_7184 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7181 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7182 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (select (store (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_#t~mem36#1.base| v_ArrVal_7181) (select (select (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem36#1.base| v_ArrVal_7182) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_7184) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (bvule (bvadd (_ bv20 32) .cse0) (bvadd (_ bv24 32) .cse0)))) (forall ((v_ArrVal_7184 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7181 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7182 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7183 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse3 (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem36#1.base| v_ArrVal_7182))) (let ((.cse2 (select (select .cse3 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (bvule (bvadd (_ bv24 32) (select (select (store (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_#t~mem36#1.base| v_ArrVal_7181) .cse2 v_ArrVal_7184) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)) (select |c_#length| (select (select (store .cse3 .cse2 v_ArrVal_7183) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))))))) is different from false [2024-11-13 16:19:37,420 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$#1.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (and (forall ((v_ArrVal_7184 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7181 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7182 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7183 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse3 (store |c_#memory_$Pointer$#1.base| .cse0 v_ArrVal_7182))) (let ((.cse1 (select (select .cse3 |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (bvule (bvadd (_ bv24 32) (select (select (store (store |c_#memory_$Pointer$#1.offset| .cse0 v_ArrVal_7181) .cse1 v_ArrVal_7184) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2)) (select |c_#length| (select (select (store .cse3 .cse1 v_ArrVal_7183) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2)))))) (forall ((v_ArrVal_7184 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7181 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7182 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse4 (select (select (store (store |c_#memory_$Pointer$#1.offset| .cse0 v_ArrVal_7181) (select (select (store |c_#memory_$Pointer$#1.base| .cse0 v_ArrVal_7182) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2) v_ArrVal_7184) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (bvule (bvadd (_ bv20 32) .cse4) (bvadd (_ bv24 32) .cse4))))))) is different from false [2024-11-13 16:19:37,766 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse2 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (and (forall ((v_ArrVal_7184 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7180 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7181 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7182 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7183 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7179 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse4 (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem35#1.base| v_ArrVal_7180))) (let ((.cse0 (select (select .cse4 |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (let ((.cse3 (store .cse4 .cse0 v_ArrVal_7182))) (let ((.cse1 (select (select .cse3 |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (bvule (bvadd (_ bv24 32) (select (select (store (store (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_#t~mem35#1.base| v_ArrVal_7179) .cse0 v_ArrVal_7181) .cse1 v_ArrVal_7184) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2)) (select |c_#length| (select (select (store .cse3 .cse1 v_ArrVal_7183) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2)))))))) (forall ((v_ArrVal_7184 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7180 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7181 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7182 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7179 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse5 (select (select (let ((.cse7 (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem35#1.base| v_ArrVal_7180))) (let ((.cse6 (select (select .cse7 |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (store (store (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_#t~mem35#1.base| v_ArrVal_7179) .cse6 v_ArrVal_7181) (select (select (store .cse7 .cse6 v_ArrVal_7182) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2) v_ArrVal_7184))) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (bvule (bvadd (_ bv20 32) .cse5) (bvadd (_ bv24 32) .cse5)))))) is different from false [2024-11-13 16:19:37,998 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$#1.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse3))) (and (forall ((v_ArrVal_7184 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7180 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7181 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7182 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7183 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7179 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse5 (store |c_#memory_$Pointer$#1.base| .cse0 v_ArrVal_7180))) (let ((.cse1 (select (select .cse5 |c_ULTIMATE.start_main_~user~0#1.base|) .cse3))) (let ((.cse4 (store .cse5 .cse1 v_ArrVal_7182))) (let ((.cse2 (select (select .cse4 |c_ULTIMATE.start_main_~user~0#1.base|) .cse3))) (bvule (bvadd (_ bv24 32) (select (select (store (store (store |c_#memory_$Pointer$#1.offset| .cse0 v_ArrVal_7179) .cse1 v_ArrVal_7181) .cse2 v_ArrVal_7184) |c_ULTIMATE.start_main_~user~0#1.base|) .cse3)) (select |c_#length| (select (select (store .cse4 .cse2 v_ArrVal_7183) |c_ULTIMATE.start_main_~user~0#1.base|) .cse3)))))))) (forall ((v_ArrVal_7184 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7180 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7181 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7182 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7179 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse6 (select (select (let ((.cse8 (store |c_#memory_$Pointer$#1.base| .cse0 v_ArrVal_7180))) (let ((.cse7 (select (select .cse8 |c_ULTIMATE.start_main_~user~0#1.base|) .cse3))) (store (store (store |c_#memory_$Pointer$#1.offset| .cse0 v_ArrVal_7179) .cse7 v_ArrVal_7181) (select (select (store .cse8 .cse7 v_ArrVal_7182) |c_ULTIMATE.start_main_~user~0#1.base|) .cse3) v_ArrVal_7184))) |c_ULTIMATE.start_main_~user~0#1.base|) .cse3))) (bvule (bvadd (_ bv20 32) .cse6) (bvadd (_ bv24 32) .cse6))))))) is different from false [2024-11-13 16:19:43,557 WARN L286 SmtUtils]: Spent 5.40s on a formula simplification that was a NOOP. DAG size: 356 (called from [L 276] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2024-11-13 16:19:48,860 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse3 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (and (forall ((v_ArrVal_7184 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7275 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7180 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7181 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7182 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7183 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7276 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7179 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse6 (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem33#1.base| v_ArrVal_7276))) (let ((.cse0 (select (select .cse6 |c_ULTIMATE.start_main_~user~0#1.base|) .cse3))) (let ((.cse5 (store .cse6 .cse0 v_ArrVal_7180))) (let ((.cse1 (select (select .cse5 |c_ULTIMATE.start_main_~user~0#1.base|) .cse3))) (let ((.cse4 (store .cse5 .cse1 v_ArrVal_7182))) (let ((.cse2 (select (select .cse4 |c_ULTIMATE.start_main_~user~0#1.base|) .cse3))) (bvule (bvadd (_ bv24 32) (select (select (store (store (store (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_#t~mem33#1.base| v_ArrVal_7275) .cse0 v_ArrVal_7179) .cse1 v_ArrVal_7181) .cse2 v_ArrVal_7184) |c_ULTIMATE.start_main_~user~0#1.base|) .cse3)) (select |c_#length| (select (select (store .cse4 .cse2 v_ArrVal_7183) |c_ULTIMATE.start_main_~user~0#1.base|) .cse3)))))))))) (forall ((v_ArrVal_7184 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7275 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7180 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7181 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7182 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7276 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7179 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse7 (select (select (let ((.cse11 (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem33#1.base| v_ArrVal_7276))) (let ((.cse8 (select (select .cse11 |c_ULTIMATE.start_main_~user~0#1.base|) .cse3))) (let ((.cse10 (store .cse11 .cse8 v_ArrVal_7180))) (let ((.cse9 (select (select .cse10 |c_ULTIMATE.start_main_~user~0#1.base|) .cse3))) (store (store (store (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_#t~mem33#1.base| v_ArrVal_7275) .cse8 v_ArrVal_7179) .cse9 v_ArrVal_7181) (select (select (store .cse10 .cse9 v_ArrVal_7182) |c_ULTIMATE.start_main_~user~0#1.base|) .cse3) v_ArrVal_7184))))) |c_ULTIMATE.start_main_~user~0#1.base|) .cse3))) (bvule (bvadd (_ bv20 32) .cse7) (bvadd (_ bv24 32) .cse7)))))) is different from false [2024-11-13 16:19:48,916 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-13 16:19:48,917 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [114623485] [2024-11-13 16:19:48,917 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [114623485] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 16:19:48,917 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1489386983] [2024-11-13 16:19:48,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:19:48,917 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-13 16:19:48,917 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_590f1fe9-8640-4e47-a434-3444a6035e24/bin/uautomizer-verify-qhAvR1uOyd/cvc4 [2024-11-13 16:19:48,919 INFO L229 MonitoredProcess]: Starting monitored process 34 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_590f1fe9-8640-4e47-a434-3444a6035e24/bin/uautomizer-verify-qhAvR1uOyd/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-13 16:19:48,921 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_590f1fe9-8640-4e47-a434-3444a6035e24/bin/uautomizer-verify-qhAvR1uOyd/cvc4 --incremental --print-success --lang smt (34)] Waiting until timeout for monitored process [2024-11-13 16:20:05,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:20:05,097 INFO L255 TraceCheckSpWp]: Trace formula consists of 851 conjuncts, 119 conjuncts are in the unsatisfiable core [2024-11-13 16:20:05,108 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 16:20:05,150 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2024-11-13 16:20:07,620 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2024-11-13 16:20:07,863 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2024-11-13 16:20:07,863 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2024-11-13 16:20:08,003 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2024-11-13 16:20:08,092 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2024-11-13 16:20:08,807 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 10 [2024-11-13 16:20:08,854 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 3 [2024-11-13 16:20:18,370 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-13 16:20:18,370 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 62 treesize of output 57 [2024-11-13 16:20:18,458 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 13 [2024-11-13 16:20:19,353 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-13 16:20:19,353 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 62 treesize of output 57 [2024-11-13 16:20:19,460 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 13 [2024-11-13 16:20:20,270 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-13 16:20:20,270 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 62 treesize of output 57 [2024-11-13 16:20:20,417 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 13 [2024-11-13 16:20:21,087 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-13 16:20:21,087 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 62 treesize of output 57 [2024-11-13 16:20:21,175 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 13 [2024-11-13 16:20:21,481 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 13 [2024-11-13 16:20:21,568 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 3 [2024-11-13 16:20:21,570 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 946 trivial. 0 not checked. [2024-11-13 16:20:21,570 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 16:20:21,987 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (and (forall ((v_ArrVal_7762 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (select (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_#t~mem37#1.base| v_ArrVal_7762) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (bvule (bvadd (_ bv20 32) .cse0) (bvadd (_ bv24 32) .cse0)))) (forall ((v_ArrVal_7763 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7762 (Array (_ BitVec 32) (_ BitVec 32)))) (bvule (bvadd (_ bv24 32) (select (select (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_#t~mem37#1.base| v_ArrVal_7762) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)) (select |c_#length| (select (select (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem37#1.base| v_ArrVal_7763) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))))) is different from false [2024-11-13 16:20:22,127 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$#1.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (and (forall ((v_ArrVal_7762 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (select (store |c_#memory_$Pointer$#1.offset| .cse1 v_ArrVal_7762) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (bvule (bvadd (_ bv20 32) .cse0) (bvadd (_ bv24 32) .cse0)))) (forall ((v_ArrVal_7763 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7762 (Array (_ BitVec 32) (_ BitVec 32)))) (bvule (bvadd (_ bv24 32) (select (select (store |c_#memory_$Pointer$#1.offset| .cse1 v_ArrVal_7762) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2)) (select |c_#length| (select (select (store |c_#memory_$Pointer$#1.base| .cse1 v_ArrVal_7763) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))))))) is different from false [2024-11-13 16:20:22,430 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (and (forall ((v_ArrVal_7762 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7761 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7760 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (select (store (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_#t~mem36#1.base| v_ArrVal_7761) (select (select (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem36#1.base| v_ArrVal_7760) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_7762) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (bvule (bvadd (_ bv20 32) .cse0) (bvadd (_ bv24 32) .cse0)))) (forall ((v_ArrVal_7763 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7762 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7761 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7760 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse3 (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem36#1.base| v_ArrVal_7760))) (let ((.cse2 (select (select .cse3 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (bvule (bvadd (_ bv24 32) (select (select (store (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_#t~mem36#1.base| v_ArrVal_7761) .cse2 v_ArrVal_7762) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)) (select |c_#length| (select (select (store .cse3 .cse2 v_ArrVal_7763) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))))))) is different from false [2024-11-13 16:20:22,600 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$#1.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (and (forall ((v_ArrVal_7763 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7762 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7761 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7760 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse3 (store |c_#memory_$Pointer$#1.base| .cse0 v_ArrVal_7760))) (let ((.cse1 (select (select .cse3 |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (bvule (bvadd (select (select (store (store |c_#memory_$Pointer$#1.offset| .cse0 v_ArrVal_7761) .cse1 v_ArrVal_7762) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2) (_ bv24 32)) (select |c_#length| (select (select (store .cse3 .cse1 v_ArrVal_7763) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2)))))) (forall ((v_ArrVal_7762 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7761 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7760 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse4 (select (select (store (store |c_#memory_$Pointer$#1.offset| .cse0 v_ArrVal_7761) (select (select (store |c_#memory_$Pointer$#1.base| .cse0 v_ArrVal_7760) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2) v_ArrVal_7762) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (bvule (bvadd .cse4 (_ bv20 32)) (bvadd .cse4 (_ bv24 32)))))))) is different from false [2024-11-13 16:20:23,017 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse3 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (and (forall ((v_ArrVal_7759 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7758 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7762 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7761 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7760 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (select (let ((.cse2 (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem35#1.base| v_ArrVal_7759))) (let ((.cse1 (select (select .cse2 |c_ULTIMATE.start_main_~user~0#1.base|) .cse3))) (store (store (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_#t~mem35#1.base| v_ArrVal_7758) .cse1 v_ArrVal_7761) (select (select (store .cse2 .cse1 v_ArrVal_7760) |c_ULTIMATE.start_main_~user~0#1.base|) .cse3) v_ArrVal_7762))) |c_ULTIMATE.start_main_~user~0#1.base|) .cse3))) (bvule (bvadd (_ bv20 32) .cse0) (bvadd (_ bv24 32) .cse0)))) (forall ((v_ArrVal_7759 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7758 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7763 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7762 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7761 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7760 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse7 (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem35#1.base| v_ArrVal_7759))) (let ((.cse4 (select (select .cse7 |c_ULTIMATE.start_main_~user~0#1.base|) .cse3))) (let ((.cse6 (store .cse7 .cse4 v_ArrVal_7760))) (let ((.cse5 (select (select .cse6 |c_ULTIMATE.start_main_~user~0#1.base|) .cse3))) (bvule (bvadd (_ bv24 32) (select (select (store (store (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_#t~mem35#1.base| v_ArrVal_7758) .cse4 v_ArrVal_7761) .cse5 v_ArrVal_7762) |c_ULTIMATE.start_main_~user~0#1.base|) .cse3)) (select |c_#length| (select (select (store .cse6 .cse5 v_ArrVal_7763) |c_ULTIMATE.start_main_~user~0#1.base|) .cse3)))))))))) is different from false [2024-11-13 16:20:23,671 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$#1.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse3))) (and (forall ((v_ArrVal_7759 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7758 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7763 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7762 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7761 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7760 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse5 (store |c_#memory_$Pointer$#1.base| .cse0 v_ArrVal_7759))) (let ((.cse1 (select (select .cse5 |c_ULTIMATE.start_main_~user~0#1.base|) .cse3))) (let ((.cse4 (store .cse5 .cse1 v_ArrVal_7760))) (let ((.cse2 (select (select .cse4 |c_ULTIMATE.start_main_~user~0#1.base|) .cse3))) (bvule (bvadd (select (select (store (store (store |c_#memory_$Pointer$#1.offset| .cse0 v_ArrVal_7758) .cse1 v_ArrVal_7761) .cse2 v_ArrVal_7762) |c_ULTIMATE.start_main_~user~0#1.base|) .cse3) (_ bv24 32)) (select |c_#length| (select (select (store .cse4 .cse2 v_ArrVal_7763) |c_ULTIMATE.start_main_~user~0#1.base|) .cse3)))))))) (forall ((v_ArrVal_7759 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7758 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7762 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7761 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7760 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse6 (select (select (let ((.cse8 (store |c_#memory_$Pointer$#1.base| .cse0 v_ArrVal_7759))) (let ((.cse7 (select (select .cse8 |c_ULTIMATE.start_main_~user~0#1.base|) .cse3))) (store (store (store |c_#memory_$Pointer$#1.offset| .cse0 v_ArrVal_7758) .cse7 v_ArrVal_7761) (select (select (store .cse8 .cse7 v_ArrVal_7760) |c_ULTIMATE.start_main_~user~0#1.base|) .cse3) v_ArrVal_7762))) |c_ULTIMATE.start_main_~user~0#1.base|) .cse3))) (bvule (bvadd .cse6 (_ bv20 32)) (bvadd .cse6 (_ bv24 32)))))))) is different from false [2024-11-13 16:20:29,127 WARN L286 SmtUtils]: Spent 5.31s on a formula simplification that was a NOOP. DAG size: 356 (called from [L 276] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2024-11-13 16:20:34,581 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse3 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (and (forall ((v_ArrVal_7759 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7758 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7855 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7854 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7763 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7762 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7761 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7760 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse6 (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem33#1.base| v_ArrVal_7855))) (let ((.cse0 (select (select .cse6 |c_ULTIMATE.start_main_~user~0#1.base|) .cse3))) (let ((.cse5 (store .cse6 .cse0 v_ArrVal_7759))) (let ((.cse1 (select (select .cse5 |c_ULTIMATE.start_main_~user~0#1.base|) .cse3))) (let ((.cse4 (store .cse5 .cse1 v_ArrVal_7760))) (let ((.cse2 (select (select .cse4 |c_ULTIMATE.start_main_~user~0#1.base|) .cse3))) (bvule (bvadd (select (select (store (store (store (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_#t~mem33#1.base| v_ArrVal_7854) .cse0 v_ArrVal_7758) .cse1 v_ArrVal_7761) .cse2 v_ArrVal_7762) |c_ULTIMATE.start_main_~user~0#1.base|) .cse3) (_ bv24 32)) (select |c_#length| (select (select (store .cse4 .cse2 v_ArrVal_7763) |c_ULTIMATE.start_main_~user~0#1.base|) .cse3)))))))))) (forall ((v_ArrVal_7759 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7758 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7855 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7854 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7762 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7761 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7760 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse7 (select (select (let ((.cse11 (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem33#1.base| v_ArrVal_7855))) (let ((.cse8 (select (select .cse11 |c_ULTIMATE.start_main_~user~0#1.base|) .cse3))) (let ((.cse10 (store .cse11 .cse8 v_ArrVal_7759))) (let ((.cse9 (select (select .cse10 |c_ULTIMATE.start_main_~user~0#1.base|) .cse3))) (store (store (store (store |c_#memory_$Pointer$#1.offset| |c_ULTIMATE.start_main_#t~mem33#1.base| v_ArrVal_7854) .cse8 v_ArrVal_7758) .cse9 v_ArrVal_7761) (select (select (store .cse10 .cse9 v_ArrVal_7760) |c_ULTIMATE.start_main_~user~0#1.base|) .cse3) v_ArrVal_7762))))) |c_ULTIMATE.start_main_~user~0#1.base|) .cse3))) (bvule (bvadd .cse7 (_ bv20 32)) (bvadd .cse7 (_ bv24 32))))))) is different from false [2024-11-13 16:20:34,634 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1489386983] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 16:20:34,635 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-13 16:20:34,635 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11] total 12 [2024-11-13 16:20:34,635 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [916850107] [2024-11-13 16:20:34,635 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-13 16:20:34,635 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-13 16:20:34,635 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-13 16:20:34,636 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-13 16:20:34,636 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=186, Unknown=14, NotChecked=546, Total=812 [2024-11-13 16:20:34,636 INFO L87 Difference]: Start difference. First operand 765 states and 813 transitions. Second operand has 13 states, 11 states have (on average 9.909090909090908) internal successors, (109), 13 states have internal predecessors, (109), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-13 16:23:24,829 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 16:23:24,829 INFO L93 Difference]: Finished difference Result 764 states and 812 transitions. [2024-11-13 16:23:24,830 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-13 16:23:24,830 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 11 states have (on average 9.909090909090908) internal successors, (109), 13 states have internal predecessors, (109), 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 124 [2024-11-13 16:23:24,830 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 16:23:24,833 INFO L225 Difference]: With dead ends: 764 [2024-11-13 16:23:24,833 INFO L226 Difference]: Without dead ends: 764 [2024-11-13 16:23:24,833 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 280 GetRequests, 242 SyntacticMatches, 3 SemanticMatches, 35 ConstructedPredicates, 14 IntricatePredicates, 0 DeprecatedPredicates, 68 ImplicationChecksByTransitivity, 23.1s TimeCoverageRelationStatistics Valid=115, Invalid=433, Unknown=14, NotChecked=770, Total=1332 [2024-11-13 16:23:24,834 INFO L432 NwaCegarLoop]: 444 mSDtfsCounter, 377 mSDsluCounter, 2531 mSDsCounter, 0 mSdLazyCounter, 3874 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 162.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 379 SdHoareTripleChecker+Valid, 2975 SdHoareTripleChecker+Invalid, 3881 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 3874 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 164.1s IncrementalHoareTripleChecker+Time [2024-11-13 16:23:24,834 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [379 Valid, 2975 Invalid, 3881 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 3874 Invalid, 0 Unknown, 0 Unchecked, 164.1s Time] [2024-11-13 16:23:24,835 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 764 states. [2024-11-13 16:23:24,840 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 764 to 764. [2024-11-13 16:23:24,841 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 764 states, 494 states have (on average 1.6295546558704452) internal successors, (805), 758 states have internal predecessors, (805), 3 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2024-11-13 16:23:24,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 764 states to 764 states and 812 transitions. [2024-11-13 16:23:24,843 INFO L78 Accepts]: Start accepts. Automaton has 764 states and 812 transitions. Word has length 124 [2024-11-13 16:23:24,843 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 16:23:24,843 INFO L471 AbstractCegarLoop]: Abstraction has 764 states and 812 transitions. [2024-11-13 16:23:24,843 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 11 states have (on average 9.909090909090908) internal successors, (109), 13 states have internal predecessors, (109), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-13 16:23:24,844 INFO L276 IsEmpty]: Start isEmpty. Operand 764 states and 812 transitions. [2024-11-13 16:23:24,845 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2024-11-13 16:23:24,845 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 16:23:24,845 INFO L215 NwaCegarLoop]: trace histogram [44, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 16:23:24,880 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_590f1fe9-8640-4e47-a434-3444a6035e24/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Ended with exit code 0 [2024-11-13 16:23:25,072 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_590f1fe9-8640-4e47-a434-3444a6035e24/bin/uautomizer-verify-qhAvR1uOyd/cvc4 --incremental --print-success --lang smt (34)] Ended with exit code 0 [2024-11-13 16:23:25,246 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_590f1fe9-8640-4e47-a434-3444a6035e24/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,34 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_590f1fe9-8640-4e47-a434-3444a6035e24/bin/uautomizer-verify-qhAvR1uOyd/cvc4 --incremental --print-success --lang smt [2024-11-13 16:23:25,246 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr88REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 422 more)] === [2024-11-13 16:23:25,247 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 16:23:25,247 INFO L85 PathProgramCache]: Analyzing trace with hash -36349440, now seen corresponding path program 1 times [2024-11-13 16:23:25,248 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-13 16:23:25,248 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1862278955] [2024-11-13 16:23:25,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:23:25,248 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 16:23:25,248 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_590f1fe9-8640-4e47-a434-3444a6035e24/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 16:23:25,250 INFO L229 MonitoredProcess]: Starting monitored process 35 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_590f1fe9-8640-4e47-a434-3444a6035e24/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 16:23:25,251 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_590f1fe9-8640-4e47-a434-3444a6035e24/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Waiting until timeout for monitored process [2024-11-13 16:23:26,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:23:26,284 INFO L255 TraceCheckSpWp]: Trace formula consists of 888 conjuncts, 67 conjuncts are in the unsatisfiable core [2024-11-13 16:23:26,293 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 16:23:30,693 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2024-11-13 16:23:30,694 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2024-11-13 16:23:31,268 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2024-11-13 16:23:39,930 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-13 16:23:39,931 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 31 treesize of output 32 [2024-11-13 16:23:41,625 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-13 16:23:41,625 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 31 treesize of output 32 [2024-11-13 16:23:43,279 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-13 16:23:43,279 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 31 treesize of output 32 [2024-11-13 16:23:44,990 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-13 16:23:44,991 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 31 treesize of output 32 [2024-11-13 16:23:46,838 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-13 16:23:46,839 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 [2024-11-13 16:23:48,308 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 15 [2024-11-13 16:23:50,129 INFO L349 Elim1Store]: treesize reduction 24, result has 33.3 percent of original size [2024-11-13 16:23:50,130 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 21 treesize of output 20 [2024-11-13 16:23:50,216 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 946 trivial. 0 not checked. [2024-11-13 16:23:50,216 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 16:23:53,405 INFO L349 Elim1Store]: treesize reduction 7, result has 63.2 percent of original size [2024-11-13 16:23:53,405 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 24 [2024-11-13 16:23:53,552 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_8310 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_ULTIMATE.start_main_#t~mem38#1.base| (select (select (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem38#1.base| v_ArrVal_8310) |c_ULTIMATE.start_main_~user~0#1.base|) (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|)))) is different from false [2024-11-13 16:23:53,741 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_8310 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (let ((.cse0 (select (select |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (= (select (select (store |c_#memory_$Pointer$#1.base| .cse0 v_ArrVal_8310) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) .cse0)))) is different from false [2024-11-13 16:23:54,018 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_8309 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8310 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse1 (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem37#1.base| v_ArrVal_8309)) (.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_8310) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))))) is different from false [2024-11-13 16:23:54,208 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_8309 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8310 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse2 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (let ((.cse1 (store |c_#memory_$Pointer$#1.base| (select (select |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse2) v_ArrVal_8309))) (let ((.cse0 (select (select .cse1 |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (= .cse0 (select (select (store .cse1 .cse0 v_ArrVal_8310) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2)))))) is different from false [2024-11-13 16:23:54,485 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_8309 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8308 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8310 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse2 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (let ((.cse0 (let ((.cse3 (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem36#1.base| v_ArrVal_8308))) (store .cse3 (select (select .cse3 |c_ULTIMATE.start_main_~user~0#1.base|) .cse2) v_ArrVal_8309)))) (let ((.cse1 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (= (select (select (store .cse0 .cse1 v_ArrVal_8310) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2) .cse1))))) is different from false [2024-11-13 16:23:54,703 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_8309 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8308 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8310 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse2 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (let ((.cse1 (let ((.cse3 (store |c_#memory_$Pointer$#1.base| (select (select |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse2) v_ArrVal_8308))) (store .cse3 (select (select .cse3 |c_ULTIMATE.start_main_~user~0#1.base|) .cse2) v_ArrVal_8309)))) (let ((.cse0 (select (select .cse1 |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (= .cse0 (select (select (store .cse1 .cse0 v_ArrVal_8310) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2)))))) is different from false [2024-11-13 16:23:54,984 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_8309 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8308 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8307 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8310 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse2 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (let ((.cse1 (let ((.cse3 (let ((.cse4 (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem35#1.base| v_ArrVal_8307))) (store .cse4 (select (select .cse4 |c_ULTIMATE.start_main_~user~0#1.base|) .cse2) v_ArrVal_8308)))) (store .cse3 (select (select .cse3 |c_ULTIMATE.start_main_~user~0#1.base|) .cse2) v_ArrVal_8309)))) (let ((.cse0 (select (select .cse1 |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (= .cse0 (select (select (store .cse1 .cse0 v_ArrVal_8310) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2)))))) is different from false [2024-11-13 16:23:55,181 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_8309 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8308 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8307 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8310 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse2 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (let ((.cse1 (let ((.cse3 (let ((.cse4 (store |c_#memory_$Pointer$#1.base| (select (select |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse2) v_ArrVal_8307))) (store .cse4 (select (select .cse4 |c_ULTIMATE.start_main_~user~0#1.base|) .cse2) v_ArrVal_8308)))) (store .cse3 (select (select .cse3 |c_ULTIMATE.start_main_~user~0#1.base|) .cse2) v_ArrVal_8309)))) (let ((.cse0 (select (select .cse1 |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (= .cse0 (select (select (store .cse1 .cse0 v_ArrVal_8310) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2)))))) is different from false [2024-11-13 16:24:00,198 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_8309 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8308 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8307 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8357 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8310 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse2 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (let ((.cse0 (let ((.cse3 (let ((.cse4 (let ((.cse5 (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem33#1.base| v_ArrVal_8357))) (store .cse5 (select (select .cse5 |c_ULTIMATE.start_main_~user~0#1.base|) .cse2) v_ArrVal_8307)))) (store .cse4 (select (select .cse4 |c_ULTIMATE.start_main_~user~0#1.base|) .cse2) v_ArrVal_8308)))) (store .cse3 (select (select .cse3 |c_ULTIMATE.start_main_~user~0#1.base|) .cse2) v_ArrVal_8309)))) (let ((.cse1 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (= (select (select (store .cse0 .cse1 v_ArrVal_8310) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2) .cse1))))) is different from false [2024-11-13 16:24:00,245 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-13 16:24:00,245 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1862278955] [2024-11-13 16:24:00,245 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1862278955] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 16:24:00,245 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1739907118] [2024-11-13 16:24:00,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 16:24:00,245 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-13 16:24:00,245 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_590f1fe9-8640-4e47-a434-3444a6035e24/bin/uautomizer-verify-qhAvR1uOyd/cvc4 [2024-11-13 16:24:00,247 INFO L229 MonitoredProcess]: Starting monitored process 36 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_590f1fe9-8640-4e47-a434-3444a6035e24/bin/uautomizer-verify-qhAvR1uOyd/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-13 16:24:00,249 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_590f1fe9-8640-4e47-a434-3444a6035e24/bin/uautomizer-verify-qhAvR1uOyd/cvc4 --incremental --print-success --lang smt (36)] Waiting until timeout for monitored process [2024-11-13 16:24:05,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 16:24:05,555 INFO L255 TraceCheckSpWp]: Trace formula consists of 888 conjuncts, 72 conjuncts are in the unsatisfiable core [2024-11-13 16:24:05,565 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 16:24:07,249 INFO L349 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2024-11-13 16:24:07,249 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 20 [2024-11-13 16:24:18,808 INFO L349 Elim1Store]: treesize reduction 54, result has 29.9 percent of original size [2024-11-13 16:24:18,808 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 26 treesize of output 43 [2024-11-13 16:24:21,091 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2024-11-13 16:24:26,383 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 16 [2024-11-13 16:25:00,175 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-13 16:25:00,176 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 [2024-11-13 16:25:04,133 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-13 16:25:04,133 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 54 treesize of output 51 [2024-11-13 16:25:07,156 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-13 16:25:07,157 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 54 treesize of output 51 [2024-11-13 16:25:10,368 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-13 16:25:10,368 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 54 treesize of output 51 [2024-11-13 16:25:13,537 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-13 16:25:13,537 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 54 treesize of output 51 [2024-11-13 16:25:14,324 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 43 treesize of output 19 [2024-11-13 16:25:18,129 INFO L349 Elim1Store]: treesize reduction 82, result has 29.3 percent of original size [2024-11-13 16:25:18,129 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 7 case distinctions, treesize of input 35 treesize of output 52 [2024-11-13 16:25:18,462 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 946 trivial. 0 not checked. [2024-11-13 16:25:18,462 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 16:25:20,039 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_8814 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (_ bv1 1) (select |c_#valid| (select (select (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem38#1.base| v_ArrVal_8814) |c_ULTIMATE.start_main_~user~0#1.base|) (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|)))))) is different from false [2024-11-13 16:25:20,192 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_8814 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (_ bv1 1) (select |c_#valid| (let ((.cse0 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (store |c_#memory_$Pointer$#1.base| (select (select |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse0) v_ArrVal_8814) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0)))))) is different from false [2024-11-13 16:25:20,416 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_8814 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8813 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (_ bv1 1) (select |c_#valid| (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (let ((.cse0 (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem37#1.base| v_ArrVal_8813))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_8814)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))))) is different from false [2024-11-13 16:25:20,574 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_8814 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8813 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (_ bv1 1) (select |c_#valid| (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (let ((.cse0 (store |c_#memory_$Pointer$#1.base| (select (select |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_8813))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_8814)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))))) is different from false [2024-11-13 16:25:20,804 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_8814 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8813 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8812 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (_ bv1 1) (select |c_#valid| (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (let ((.cse0 (let ((.cse2 (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem36#1.base| v_ArrVal_8812))) (store .cse2 (select (select .cse2 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_8813)))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_8814)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))))) is different from false [2024-11-13 16:25:20,960 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_8814 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8813 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8812 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (_ bv1 1) (select |c_#valid| (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (let ((.cse0 (let ((.cse2 (store |c_#memory_$Pointer$#1.base| (select (select |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_8812))) (store .cse2 (select (select .cse2 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_8813)))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_8814)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))))) is different from false [2024-11-13 16:25:21,195 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_8814 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8813 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8812 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8811 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (_ bv1 1) (select |c_#valid| (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (let ((.cse0 (let ((.cse2 (let ((.cse3 (store |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_#t~mem35#1.base| v_ArrVal_8811))) (store .cse3 (select (select .cse3 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_8812)))) (store .cse2 (select (select .cse2 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_8813)))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_8814)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))))) is different from false [2024-11-13 16:25:21,359 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_8814 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8813 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8812 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8811 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (_ bv1 1) (select |c_#valid| (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (let ((.cse0 (let ((.cse2 (let ((.cse3 (store |c_#memory_$Pointer$#1.base| (select (select |c_#memory_$Pointer$#1.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_8811))) (store .cse3 (select (select .cse3 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_8812)))) (store .cse2 (select (select .cse2 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_8813)))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_8814)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))))) is different from false [2024-11-13 16:25:27,059 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1739907118] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 16:25:27,059 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-13 16:25:27,060 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 13] total 27 [2024-11-13 16:25:27,060 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1847598572] [2024-11-13 16:25:27,060 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-13 16:25:27,060 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2024-11-13 16:25:27,060 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-13 16:25:27,061 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2024-11-13 16:25:27,062 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=165, Invalid=756, Unknown=17, NotChecked=1224, Total=2162 [2024-11-13 16:25:27,063 INFO L87 Difference]: Start difference. First operand 764 states and 812 transitions. Second operand has 28 states, 25 states have (on average 6.72) internal successors, (168), 27 states have internal predecessors, (168), 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)