./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/uthash-2.0.2/uthash_JEN_nondet_test2-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 6497de01 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_973d774c-f522-4607-b146-f2545de41032/bin/uautomizer-verify-LYvppIcaGC/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_973d774c-f522-4607-b146-f2545de41032/bin/uautomizer-verify-LYvppIcaGC/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_973d774c-f522-4607-b146-f2545de41032/bin/uautomizer-verify-LYvppIcaGC/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_973d774c-f522-4607-b146-f2545de41032/bin/uautomizer-verify-LYvppIcaGC/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_JEN_nondet_test2-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_973d774c-f522-4607-b146-f2545de41032/bin/uautomizer-verify-LYvppIcaGC/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_973d774c-f522-4607-b146-f2545de41032/bin/uautomizer-verify-LYvppIcaGC --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 0fdcb64865aeb8184805095bc8dbe7392078d445cf902388dac9d1ca4533bb8c --- Real Ultimate output --- This is Ultimate 0.3.0-dev-6497de0 [2024-11-23 23:34:49,457 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-23 23:34:49,528 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_973d774c-f522-4607-b146-f2545de41032/bin/uautomizer-verify-LYvppIcaGC/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2024-11-23 23:34:49,535 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-23 23:34:49,535 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-23 23:34:49,565 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-23 23:34:49,566 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-23 23:34:49,566 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-23 23:34:49,567 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-23 23:34:49,567 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-23 23:34:49,567 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-23 23:34:49,567 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-23 23:34:49,568 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-23 23:34:49,568 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-23 23:34:49,568 INFO L153 SettingsManager]: * Use SBE=true [2024-11-23 23:34:49,568 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-23 23:34:49,568 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-23 23:34:49,568 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-23 23:34:49,568 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-23 23:34:49,569 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-23 23:34:49,569 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-11-23 23:34:49,569 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-11-23 23:34:49,569 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-11-23 23:34:49,569 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-23 23:34:49,569 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-23 23:34:49,569 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-23 23:34:49,569 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-23 23:34:49,569 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-23 23:34:49,569 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-23 23:34:49,570 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-23 23:34:49,570 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-23 23:34:49,570 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-23 23:34:49,571 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-23 23:34:49,571 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-23 23:34:49,571 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-23 23:34:49,571 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-23 23:34:49,571 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-23 23:34:49,572 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-23 23:34:49,572 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-23 23:34:49,572 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-23 23:34:49,572 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-23 23:34:49,572 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-23 23:34:49,573 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-23 23:34:49,573 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-23 23:34:49,573 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-23 23:34:49,573 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-23 23:34:49,573 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-23 23:34:49,573 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_973d774c-f522-4607-b146-f2545de41032/bin/uautomizer-verify-LYvppIcaGC Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0fdcb64865aeb8184805095bc8dbe7392078d445cf902388dac9d1ca4533bb8c [2024-11-23 23:34:49,892 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-23 23:34:49,902 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-23 23:34:49,905 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-23 23:34:49,907 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-23 23:34:49,907 INFO L274 PluginConnector]: CDTParser initialized [2024-11-23 23:34:49,909 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_973d774c-f522-4607-b146-f2545de41032/bin/uautomizer-verify-LYvppIcaGC/../../sv-benchmarks/c/uthash-2.0.2/uthash_JEN_nondet_test2-2.i [2024-11-23 23:34:53,432 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_973d774c-f522-4607-b146-f2545de41032/bin/uautomizer-verify-LYvppIcaGC/data/e7b98126c/6c2040401b024384a3910107ed5b8e69/FLAGcd96869d3 [2024-11-23 23:34:53,855 INFO L384 CDTParser]: Found 1 translation units. [2024-11-23 23:34:53,856 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_973d774c-f522-4607-b146-f2545de41032/sv-benchmarks/c/uthash-2.0.2/uthash_JEN_nondet_test2-2.i [2024-11-23 23:34:53,883 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_973d774c-f522-4607-b146-f2545de41032/bin/uautomizer-verify-LYvppIcaGC/data/e7b98126c/6c2040401b024384a3910107ed5b8e69/FLAGcd96869d3 [2024-11-23 23:34:53,901 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_973d774c-f522-4607-b146-f2545de41032/bin/uautomizer-verify-LYvppIcaGC/data/e7b98126c/6c2040401b024384a3910107ed5b8e69 [2024-11-23 23:34:53,904 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-23 23:34:53,905 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-23 23:34:53,907 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-23 23:34:53,907 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-23 23:34:53,913 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-23 23:34:53,914 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 11:34:53" (1/1) ... [2024-11-23 23:34:53,915 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4d52c2f5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:34:53, skipping insertion in model container [2024-11-23 23:34:53,915 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 11:34:53" (1/1) ... [2024-11-23 23:34:53,991 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-23 23:34:54,720 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-23 23:34:54,776 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-23 23:34:54,784 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-23 23:34:54,795 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-23 23:34:54,806 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-23 23:34:54,852 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-23 23:34:54,852 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-23 23:34:54,856 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-23 23:34:54,857 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-23 23:34:54,860 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-23 23:34:54,868 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-23 23:34:54,872 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-23 23:34:54,876 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-23 23:34:54,878 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-23 23:34:54,888 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-23 23:34:54,904 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-23 23:34:54,937 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) [2024-11-23 23:34:54,937 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@47bcaaf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:34:54, skipping insertion in model container [2024-11-23 23:34:54,938 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-23 23:34:54,938 INFO L186 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2024-11-23 23:34:54,941 INFO L158 Benchmark]: Toolchain (without parser) took 1034.53ms. Allocated memory is still 117.4MB. Free memory was 90.7MB in the beginning and 70.7MB in the end (delta: 19.9MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. [2024-11-23 23:34:54,941 INFO L158 Benchmark]: CDTParser took 0.52ms. Allocated memory is still 117.4MB. Free memory was 74.8MB in the beginning and 74.6MB in the end (delta: 196.3kB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-23 23:34:54,942 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1031.37ms. Allocated memory is still 117.4MB. Free memory was 90.4MB in the beginning and 70.7MB in the end (delta: 19.7MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. [2024-11-23 23:34:54,944 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.52ms. Allocated memory is still 117.4MB. Free memory was 74.8MB in the beginning and 74.6MB in the end (delta: 196.3kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 1031.37ms. Allocated memory is still 117.4MB. Free memory was 90.4MB in the beginning and 70.7MB in the end (delta: 19.7MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 831]: 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_973d774c-f522-4607-b146-f2545de41032/bin/uautomizer-verify-LYvppIcaGC/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_973d774c-f522-4607-b146-f2545de41032/bin/uautomizer-verify-LYvppIcaGC/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_973d774c-f522-4607-b146-f2545de41032/bin/uautomizer-verify-LYvppIcaGC/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_973d774c-f522-4607-b146-f2545de41032/bin/uautomizer-verify-LYvppIcaGC/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_JEN_nondet_test2-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_973d774c-f522-4607-b146-f2545de41032/bin/uautomizer-verify-LYvppIcaGC/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_973d774c-f522-4607-b146-f2545de41032/bin/uautomizer-verify-LYvppIcaGC --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 0fdcb64865aeb8184805095bc8dbe7392078d445cf902388dac9d1ca4533bb8c --- Real Ultimate output --- This is Ultimate 0.3.0-dev-6497de0 [2024-11-23 23:34:57,988 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-23 23:34:58,156 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_973d774c-f522-4607-b146-f2545de41032/bin/uautomizer-verify-LYvppIcaGC/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2024-11-23 23:34:58,168 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-23 23:34:58,169 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-23 23:34:58,215 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-23 23:34:58,216 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-23 23:34:58,217 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-23 23:34:58,217 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-23 23:34:58,218 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-23 23:34:58,218 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-23 23:34:58,219 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-23 23:34:58,220 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-23 23:34:58,220 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-23 23:34:58,220 INFO L153 SettingsManager]: * Use SBE=true [2024-11-23 23:34:58,220 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-23 23:34:58,221 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-23 23:34:58,222 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-23 23:34:58,222 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-23 23:34:58,222 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-23 23:34:58,222 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-11-23 23:34:58,222 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-11-23 23:34:58,223 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-11-23 23:34:58,223 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-23 23:34:58,223 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-23 23:34:58,223 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2024-11-23 23:34:58,223 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2024-11-23 23:34:58,223 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-23 23:34:58,224 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-23 23:34:58,224 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-23 23:34:58,224 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-23 23:34:58,224 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-23 23:34:58,224 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-23 23:34:58,224 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-23 23:34:58,224 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-23 23:34:58,224 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-23 23:34:58,224 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-23 23:34:58,225 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-23 23:34:58,225 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-23 23:34:58,225 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-23 23:34:58,225 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-23 23:34:58,225 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-23 23:34:58,225 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-23 23:34:58,225 INFO L153 SettingsManager]: * Trace refinement strategy=FOX [2024-11-23 23:34:58,225 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2024-11-23 23:34:58,225 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-23 23:34:58,226 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-23 23:34:58,226 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-23 23:34:58,226 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-23 23:34:58,226 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_973d774c-f522-4607-b146-f2545de41032/bin/uautomizer-verify-LYvppIcaGC Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0fdcb64865aeb8184805095bc8dbe7392078d445cf902388dac9d1ca4533bb8c [2024-11-23 23:34:58,643 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-23 23:34:58,658 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-23 23:34:58,663 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-23 23:34:58,664 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-23 23:34:58,665 INFO L274 PluginConnector]: CDTParser initialized [2024-11-23 23:34:58,670 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_973d774c-f522-4607-b146-f2545de41032/bin/uautomizer-verify-LYvppIcaGC/../../sv-benchmarks/c/uthash-2.0.2/uthash_JEN_nondet_test2-2.i [2024-11-23 23:35:02,266 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_973d774c-f522-4607-b146-f2545de41032/bin/uautomizer-verify-LYvppIcaGC/data/bf79afef5/d255e58a5e1d4ba2a575946afcac249f/FLAG49342eb33 [2024-11-23 23:35:02,761 INFO L384 CDTParser]: Found 1 translation units. [2024-11-23 23:35:02,762 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_973d774c-f522-4607-b146-f2545de41032/sv-benchmarks/c/uthash-2.0.2/uthash_JEN_nondet_test2-2.i [2024-11-23 23:35:02,796 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_973d774c-f522-4607-b146-f2545de41032/bin/uautomizer-verify-LYvppIcaGC/data/bf79afef5/d255e58a5e1d4ba2a575946afcac249f/FLAG49342eb33 [2024-11-23 23:35:02,828 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_973d774c-f522-4607-b146-f2545de41032/bin/uautomizer-verify-LYvppIcaGC/data/bf79afef5/d255e58a5e1d4ba2a575946afcac249f [2024-11-23 23:35:02,831 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-23 23:35:02,833 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-23 23:35:02,837 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-23 23:35:02,838 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-23 23:35:02,844 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-23 23:35:02,845 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 11:35:02" (1/1) ... [2024-11-23 23:35:02,846 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@694e1729 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:35:02, skipping insertion in model container [2024-11-23 23:35:02,846 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 11:35:02" (1/1) ... [2024-11-23 23:35:02,926 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-23 23:35:03,528 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-23 23:35:03,600 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-23 23:35:03,605 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-23 23:35:03,612 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-23 23:35:03,623 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-23 23:35:03,672 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-23 23:35:03,672 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-23 23:35:03,677 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-23 23:35:03,677 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-23 23:35:03,680 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-23 23:35:03,684 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-23 23:35:03,686 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-23 23:35:03,687 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-23 23:35:03,688 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-23 23:35:03,697 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-23 23:35:03,704 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-23 23:35:03,720 INFO L197 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2024-11-23 23:35:03,734 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-23 23:35:03,773 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-23 23:35:03,812 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-23 23:35:03,818 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-23 23:35:03,822 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-23 23:35:03,829 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-23 23:35:03,859 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-23 23:35:03,859 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-23 23:35:03,862 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-23 23:35:03,863 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-23 23:35:03,865 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-23 23:35:03,868 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-23 23:35:03,869 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-23 23:35:03,870 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-23 23:35:03,871 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-23 23:35:03,881 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-23 23:35:03,884 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-23 23:35:03,890 INFO L200 MainTranslator]: Completed pre-run [2024-11-23 23:35:04,067 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-23 23:35:04,141 INFO L204 MainTranslator]: Completed translation [2024-11-23 23:35:04,142 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:35:04 WrapperNode [2024-11-23 23:35:04,142 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-23 23:35:04,144 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-23 23:35:04,144 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-23 23:35:04,144 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-23 23:35:04,154 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:35:04" (1/1) ... [2024-11-23 23:35:04,201 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:35:04" (1/1) ... [2024-11-23 23:35:04,287 INFO L138 Inliner]: procedures = 210, calls = 273, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 1024 [2024-11-23 23:35:04,287 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-23 23:35:04,288 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-23 23:35:04,288 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-23 23:35:04,288 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-23 23:35:04,307 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:35:04" (1/1) ... [2024-11-23 23:35:04,307 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:35:04" (1/1) ... [2024-11-23 23:35:04,328 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:35:04" (1/1) ... [2024-11-23 23:35:04,472 INFO L175 MemorySlicer]: Split 254 memory accesses to 3 slices as follows [2, 34, 218]. 86 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0]. The 54 writes are split as follows [0, 4, 50]. [2024-11-23 23:35:04,472 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:35:04" (1/1) ... [2024-11-23 23:35:04,473 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:35:04" (1/1) ... [2024-11-23 23:35:04,539 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:35:04" (1/1) ... [2024-11-23 23:35:04,541 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:35:04" (1/1) ... [2024-11-23 23:35:04,551 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:35:04" (1/1) ... [2024-11-23 23:35:04,555 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:35:04" (1/1) ... [2024-11-23 23:35:04,559 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:35:04" (1/1) ... [2024-11-23 23:35:04,576 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-23 23:35:04,581 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-23 23:35:04,581 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-23 23:35:04,581 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-23 23:35:04,582 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:35:04" (1/1) ... [2024-11-23 23:35:04,592 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-23 23:35:04,617 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_973d774c-f522-4607-b146-f2545de41032/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 23:35:04,633 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_973d774c-f522-4607-b146-f2545de41032/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-23 23:35:04,637 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_973d774c-f522-4607-b146-f2545de41032/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-23 23:35:04,665 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#0 [2024-11-23 23:35:04,665 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#1 [2024-11-23 23:35:04,666 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#2 [2024-11-23 23:35:04,666 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#0 [2024-11-23 23:35:04,666 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#1 [2024-11-23 23:35:04,666 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#2 [2024-11-23 23:35:04,666 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#0 [2024-11-23 23:35:04,666 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#1 [2024-11-23 23:35:04,666 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#2 [2024-11-23 23:35:04,667 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#0 [2024-11-23 23:35:04,667 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#1 [2024-11-23 23:35:04,667 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#2 [2024-11-23 23:35:04,667 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-23 23:35:04,667 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2024-11-23 23:35:04,667 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2024-11-23 23:35:04,667 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2024-11-23 23:35:04,667 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#0 [2024-11-23 23:35:04,667 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#1 [2024-11-23 23:35:04,668 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#2 [2024-11-23 23:35:04,668 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-23 23:35:04,668 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2024-11-23 23:35:04,668 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#1 [2024-11-23 23:35:04,668 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#2 [2024-11-23 23:35:04,668 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-23 23:35:04,668 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-23 23:35:04,668 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2024-11-23 23:35:04,669 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2024-11-23 23:35:04,669 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2024-11-23 23:35:04,669 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-23 23:35:04,669 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-23 23:35:04,920 INFO L234 CfgBuilder]: Building ICFG [2024-11-23 23:35:04,923 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-23 23:35:04,926 WARN L773 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2024-11-23 23:35:05,000 WARN L773 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2024-11-23 23:35:05,025 WARN L773 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2024-11-23 23:35:10,670 INFO L? ?]: Removed 1086 outVars from TransFormulas that were not future-live. [2024-11-23 23:35:10,671 INFO L283 CfgBuilder]: Performing block encoding [2024-11-23 23:35:10,711 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-23 23:35:10,712 INFO L312 CfgBuilder]: Removed 36 assume(true) statements. [2024-11-23 23:35:10,712 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 11:35:10 BoogieIcfgContainer [2024-11-23 23:35:10,712 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-23 23:35:10,715 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-23 23:35:10,715 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-23 23:35:10,722 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-23 23:35:10,722 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 11:35:02" (1/3) ... [2024-11-23 23:35:10,723 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@37e818b7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 11:35:10, skipping insertion in model container [2024-11-23 23:35:10,723 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 11:35:04" (2/3) ... [2024-11-23 23:35:10,723 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@37e818b7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 11:35:10, skipping insertion in model container [2024-11-23 23:35:10,723 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 11:35:10" (3/3) ... [2024-11-23 23:35:10,725 INFO L128 eAbstractionObserver]: Analyzing ICFG uthash_JEN_nondet_test2-2.i [2024-11-23 23:35:10,743 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-23 23:35:10,746 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG uthash_JEN_nondet_test2-2.i that has 4 procedures, 1070 locations, 1 initial locations, 38 loop locations, and 525 error locations. [2024-11-23 23:35:10,830 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-23 23:35:10,844 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;@7792a22a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-23 23:35:10,845 INFO L334 AbstractCegarLoop]: Starting to check reachability of 525 error locations. [2024-11-23 23:35:10,853 INFO L276 IsEmpty]: Start isEmpty. Operand has 1060 states, 533 states have (on average 2.2157598499061915) internal successors, (1181), 1055 states have internal predecessors, (1181), 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) [2024-11-23 23:35:10,858 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2024-11-23 23:35:10,858 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:35:10,859 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2024-11-23 23:35:10,860 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr524ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 522 more)] === [2024-11-23 23:35:10,869 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:35:10,869 INFO L85 PathProgramCache]: Analyzing trace with hash 1758461, now seen corresponding path program 1 times [2024-11-23 23:35:10,884 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-23 23:35:10,884 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [309514055] [2024-11-23 23:35:10,884 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:35:10,885 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 23:35:10,885 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_973d774c-f522-4607-b146-f2545de41032/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 23:35:10,891 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_973d774c-f522-4607-b146-f2545de41032/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 23:35:10,894 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_973d774c-f522-4607-b146-f2545de41032/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-23 23:35:11,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:35:11,114 INFO L256 TraceCheckSpWp]: Trace formula consists of 27 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-23 23:35:11,120 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 23:35:11,238 WARN L873 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_main_~#i~0#1.base_46| (_ BitVec 32))) (and (= (_ bv0 1) (select |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#i~0#1.base_46|)) (= (store |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#i~0#1.base_46| (_ bv0 1)) |c_#valid|))) is different from true [2024-11-23 23:35:11,247 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 23:35:11,247 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-23 23:35:11,248 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-23 23:35:11,248 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [309514055] [2024-11-23 23:35:11,249 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [309514055] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:35:11,249 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:35:11,249 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-23 23:35:11,254 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [771537733] [2024-11-23 23:35:11,255 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:35:11,259 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-23 23:35:11,260 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-23 23:35:11,291 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-23 23:35:11,292 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=4, Unknown=1, NotChecked=2, Total=12 [2024-11-23 23:35:11,298 INFO L87 Difference]: Start difference. First operand has 1060 states, 533 states have (on average 2.2157598499061915) internal successors, (1181), 1055 states have internal predecessors, (1181), 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 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 4 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:35:14,997 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:35:14,997 INFO L93 Difference]: Finished difference Result 1449 states and 1550 transitions. [2024-11-23 23:35:14,999 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-23 23:35:15,001 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 4 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4 [2024-11-23 23:35:15,001 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:35:15,035 INFO L225 Difference]: With dead ends: 1449 [2024-11-23 23:35:15,035 INFO L226 Difference]: Without dead ends: 1446 [2024-11-23 23:35:15,036 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=4, Unknown=1, NotChecked=2, Total=12 [2024-11-23 23:35:15,042 INFO L435 NwaCegarLoop]: 912 mSDtfsCounter, 427 mSDsluCounter, 571 mSDsCounter, 0 mSdLazyCounter, 739 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 427 SdHoareTripleChecker+Valid, 1483 SdHoareTripleChecker+Invalid, 2290 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 739 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1551 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time [2024-11-23 23:35:15,043 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [427 Valid, 1483 Invalid, 2290 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 739 Invalid, 0 Unknown, 1551 Unchecked, 3.5s Time] [2024-11-23 23:35:15,066 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1446 states. [2024-11-23 23:35:15,139 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1446 to 1048. [2024-11-23 23:35:15,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1048 states, 527 states have (on average 2.0853889943074004) internal successors, (1099), 1043 states have internal predecessors, (1099), 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) [2024-11-23 23:35:15,155 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1048 states to 1048 states and 1105 transitions. [2024-11-23 23:35:15,158 INFO L78 Accepts]: Start accepts. Automaton has 1048 states and 1105 transitions. Word has length 4 [2024-11-23 23:35:15,159 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:35:15,159 INFO L471 AbstractCegarLoop]: Abstraction has 1048 states and 1105 transitions. [2024-11-23 23:35:15,159 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 4 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:35:15,159 INFO L276 IsEmpty]: Start isEmpty. Operand 1048 states and 1105 transitions. [2024-11-23 23:35:15,160 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2024-11-23 23:35:15,160 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:35:15,160 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2024-11-23 23:35:15,173 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_973d774c-f522-4607-b146-f2545de41032/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-23 23:35:15,361 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_973d774c-f522-4607-b146-f2545de41032/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 23:35:15,361 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 522 more)] === [2024-11-23 23:35:15,362 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:35:15,362 INFO L85 PathProgramCache]: Analyzing trace with hash 1756837, now seen corresponding path program 1 times [2024-11-23 23:35:15,362 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-23 23:35:15,362 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [303838570] [2024-11-23 23:35:15,363 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:35:15,363 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 23:35:15,363 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_973d774c-f522-4607-b146-f2545de41032/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 23:35:15,365 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_973d774c-f522-4607-b146-f2545de41032/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 23:35:15,370 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_973d774c-f522-4607-b146-f2545de41032/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-23 23:35:15,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:35:15,541 INFO L256 TraceCheckSpWp]: Trace formula consists of 24 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-23 23:35:15,543 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 23:35:15,560 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 [2024-11-23 23:35:15,578 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 23:35:15,578 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-23 23:35:15,578 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-23 23:35:15,578 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [303838570] [2024-11-23 23:35:15,578 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [303838570] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:35:15,578 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:35:15,578 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-23 23:35:15,579 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1201885800] [2024-11-23 23:35:15,579 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:35:15,580 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-23 23:35:15,580 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-23 23:35:15,580 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-23 23:35:15,581 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-23 23:35:15,582 INFO L87 Difference]: Start difference. First operand 1048 states and 1105 transitions. Second operand has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:35:17,982 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:35:17,982 INFO L93 Difference]: Finished difference Result 1224 states and 1291 transitions. [2024-11-23 23:35:17,982 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-23 23:35:17,983 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4 [2024-11-23 23:35:17,983 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:35:17,988 INFO L225 Difference]: With dead ends: 1224 [2024-11-23 23:35:17,988 INFO L226 Difference]: Without dead ends: 1224 [2024-11-23 23:35:17,988 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-23 23:35:17,989 INFO L435 NwaCegarLoop]: 630 mSDtfsCounter, 969 mSDsluCounter, 147 mSDsCounter, 0 mSdLazyCounter, 634 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 972 SdHoareTripleChecker+Valid, 777 SdHoareTripleChecker+Invalid, 650 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 634 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2024-11-23 23:35:17,990 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [972 Valid, 777 Invalid, 650 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 634 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2024-11-23 23:35:17,993 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1224 states. [2024-11-23 23:35:18,017 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1224 to 1045. [2024-11-23 23:35:18,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1045 states, 535 states have (on average 2.0504672897196263) internal successors, (1097), 1040 states have internal predecessors, (1097), 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) [2024-11-23 23:35:18,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1045 states to 1045 states and 1103 transitions. [2024-11-23 23:35:18,025 INFO L78 Accepts]: Start accepts. Automaton has 1045 states and 1103 transitions. Word has length 4 [2024-11-23 23:35:18,025 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:35:18,025 INFO L471 AbstractCegarLoop]: Abstraction has 1045 states and 1103 transitions. [2024-11-23 23:35:18,025 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:35:18,025 INFO L276 IsEmpty]: Start isEmpty. Operand 1045 states and 1103 transitions. [2024-11-23 23:35:18,026 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2024-11-23 23:35:18,026 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:35:18,026 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2024-11-23 23:35:18,037 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_973d774c-f522-4607-b146-f2545de41032/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-23 23:35:18,230 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_973d774c-f522-4607-b146-f2545de41032/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 23:35:18,231 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 522 more)] === [2024-11-23 23:35:18,231 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:35:18,231 INFO L85 PathProgramCache]: Analyzing trace with hash 1756838, now seen corresponding path program 1 times [2024-11-23 23:35:18,232 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-23 23:35:18,234 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [917983009] [2024-11-23 23:35:18,234 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:35:18,234 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 23:35:18,235 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_973d774c-f522-4607-b146-f2545de41032/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 23:35:18,237 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_973d774c-f522-4607-b146-f2545de41032/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 23:35:18,242 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_973d774c-f522-4607-b146-f2545de41032/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-23 23:35:18,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:35:18,412 INFO L256 TraceCheckSpWp]: Trace formula consists of 24 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-23 23:35:18,414 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 23:35:18,426 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 [2024-11-23 23:35:18,457 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 23:35:18,459 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-23 23:35:18,460 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-23 23:35:18,460 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [917983009] [2024-11-23 23:35:18,460 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [917983009] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:35:18,460 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:35:18,460 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-23 23:35:18,460 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [589585936] [2024-11-23 23:35:18,460 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:35:18,461 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-23 23:35:18,461 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-23 23:35:18,461 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-23 23:35:18,461 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-23 23:35:18,461 INFO L87 Difference]: Start difference. First operand 1045 states and 1103 transitions. Second operand has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:35:21,948 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:35:21,948 INFO L93 Difference]: Finished difference Result 1457 states and 1547 transitions. [2024-11-23 23:35:21,948 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-23 23:35:21,948 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4 [2024-11-23 23:35:21,949 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:35:21,955 INFO L225 Difference]: With dead ends: 1457 [2024-11-23 23:35:21,955 INFO L226 Difference]: Without dead ends: 1457 [2024-11-23 23:35:21,956 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-23 23:35:21,957 INFO L435 NwaCegarLoop]: 904 mSDtfsCounter, 444 mSDsluCounter, 579 mSDsCounter, 0 mSdLazyCounter, 700 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 444 SdHoareTripleChecker+Valid, 1483 SdHoareTripleChecker+Invalid, 706 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 700 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2024-11-23 23:35:21,957 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [444 Valid, 1483 Invalid, 706 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 700 Invalid, 0 Unknown, 0 Unchecked, 3.4s Time] [2024-11-23 23:35:21,960 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1457 states. [2024-11-23 23:35:21,983 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1457 to 1170. [2024-11-23 23:35:21,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1170 states, 661 states have (on average 2.006051437216339) internal successors, (1326), 1165 states have internal predecessors, (1326), 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) [2024-11-23 23:35:21,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1170 states to 1170 states and 1332 transitions. [2024-11-23 23:35:21,991 INFO L78 Accepts]: Start accepts. Automaton has 1170 states and 1332 transitions. Word has length 4 [2024-11-23 23:35:21,991 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:35:21,992 INFO L471 AbstractCegarLoop]: Abstraction has 1170 states and 1332 transitions. [2024-11-23 23:35:21,992 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:35:21,992 INFO L276 IsEmpty]: Start isEmpty. Operand 1170 states and 1332 transitions. [2024-11-23 23:35:21,992 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2024-11-23 23:35:21,993 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:35:21,993 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:35:22,001 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_973d774c-f522-4607-b146-f2545de41032/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-23 23:35:22,194 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_973d774c-f522-4607-b146-f2545de41032/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 23:35:22,195 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 522 more)] === [2024-11-23 23:35:22,195 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:35:22,195 INFO L85 PathProgramCache]: Analyzing trace with hash -1599592659, now seen corresponding path program 1 times [2024-11-23 23:35:22,196 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-23 23:35:22,196 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2060871482] [2024-11-23 23:35:22,196 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:35:22,196 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 23:35:22,196 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_973d774c-f522-4607-b146-f2545de41032/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 23:35:22,200 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_973d774c-f522-4607-b146-f2545de41032/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 23:35:22,203 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_973d774c-f522-4607-b146-f2545de41032/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-23 23:35:22,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:35:22,391 INFO L256 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-23 23:35:22,397 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 23:35:22,423 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 [2024-11-23 23:35:22,542 INFO L349 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2024-11-23 23:35:22,542 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 18 [2024-11-23 23:35:22,642 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 23:35:22,643 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-23 23:35:22,643 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-23 23:35:22,643 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2060871482] [2024-11-23 23:35:22,643 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2060871482] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:35:22,643 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:35:22,644 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-23 23:35:22,644 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [963231367] [2024-11-23 23:35:22,644 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:35:22,644 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-23 23:35:22,644 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-23 23:35:22,645 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-23 23:35:22,645 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-23 23:35:22,645 INFO L87 Difference]: Start difference. First operand 1170 states and 1332 transitions. Second operand has 4 states, 3 states have (on average 3.0) 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) [2024-11-23 23:35:29,179 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:35:29,180 INFO L93 Difference]: Finished difference Result 2155 states and 2293 transitions. [2024-11-23 23:35:29,183 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-23 23:35:29,184 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.0) 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 [2024-11-23 23:35:29,184 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:35:29,192 INFO L225 Difference]: With dead ends: 2155 [2024-11-23 23:35:29,192 INFO L226 Difference]: Without dead ends: 2155 [2024-11-23 23:35:29,192 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-23 23:35:29,193 INFO L435 NwaCegarLoop]: 1024 mSDtfsCounter, 1182 mSDsluCounter, 1159 mSDsCounter, 0 mSdLazyCounter, 1541 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1182 SdHoareTripleChecker+Valid, 2183 SdHoareTripleChecker+Invalid, 1552 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 1541 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.4s IncrementalHoareTripleChecker+Time [2024-11-23 23:35:29,193 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1182 Valid, 2183 Invalid, 1552 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 1541 Invalid, 0 Unknown, 0 Unchecked, 6.4s Time] [2024-11-23 23:35:29,197 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2155 states. [2024-11-23 23:35:29,227 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2155 to 1319. [2024-11-23 23:35:29,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1319 states, 810 states have (on average 1.991358024691358) internal successors, (1613), 1314 states have internal predecessors, (1613), 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) [2024-11-23 23:35:29,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1319 states to 1319 states and 1619 transitions. [2024-11-23 23:35:29,235 INFO L78 Accepts]: Start accepts. Automaton has 1319 states and 1619 transitions. Word has length 9 [2024-11-23 23:35:29,235 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:35:29,236 INFO L471 AbstractCegarLoop]: Abstraction has 1319 states and 1619 transitions. [2024-11-23 23:35:29,236 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.0) 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) [2024-11-23 23:35:29,236 INFO L276 IsEmpty]: Start isEmpty. Operand 1319 states and 1619 transitions. [2024-11-23 23:35:29,236 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2024-11-23 23:35:29,236 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:35:29,237 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:35:29,250 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_973d774c-f522-4607-b146-f2545de41032/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-23 23:35:29,437 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_973d774c-f522-4607-b146-f2545de41032/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 23:35:29,437 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 522 more)] === [2024-11-23 23:35:29,438 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:35:29,438 INFO L85 PathProgramCache]: Analyzing trace with hash 1952235122, now seen corresponding path program 1 times [2024-11-23 23:35:29,438 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-23 23:35:29,438 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1064618831] [2024-11-23 23:35:29,438 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:35:29,439 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 23:35:29,439 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_973d774c-f522-4607-b146-f2545de41032/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 23:35:29,441 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_973d774c-f522-4607-b146-f2545de41032/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 23:35:29,442 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_973d774c-f522-4607-b146-f2545de41032/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-23 23:35:29,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:35:29,601 INFO L256 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-23 23:35:29,603 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 23:35:29,613 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 [2024-11-23 23:35:29,638 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 23:35:29,638 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-23 23:35:29,638 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-23 23:35:29,638 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1064618831] [2024-11-23 23:35:29,638 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1064618831] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:35:29,638 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:35:29,638 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-23 23:35:29,638 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2139120580] [2024-11-23 23:35:29,638 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:35:29,639 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-23 23:35:29,639 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-23 23:35:29,639 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-23 23:35:29,639 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-23 23:35:29,639 INFO L87 Difference]: Start difference. First operand 1319 states and 1619 transitions. Second operand has 3 states, 2 states have (on average 5.0) internal successors, (10), 3 states have internal predecessors, (10), 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) [2024-11-23 23:35:31,874 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:35:31,875 INFO L93 Difference]: Finished difference Result 1485 states and 1795 transitions. [2024-11-23 23:35:31,875 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-23 23:35:31,875 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 5.0) internal successors, (10), 3 states have internal predecessors, (10), 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 10 [2024-11-23 23:35:31,875 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:35:31,879 INFO L225 Difference]: With dead ends: 1485 [2024-11-23 23:35:31,879 INFO L226 Difference]: Without dead ends: 1485 [2024-11-23 23:35:31,879 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-23 23:35:31,880 INFO L435 NwaCegarLoop]: 878 mSDtfsCounter, 761 mSDsluCounter, 252 mSDsCounter, 0 mSdLazyCounter, 658 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 764 SdHoareTripleChecker+Valid, 1130 SdHoareTripleChecker+Invalid, 708 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 658 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2024-11-23 23:35:31,880 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [764 Valid, 1130 Invalid, 708 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [50 Valid, 658 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2024-11-23 23:35:31,883 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1485 states. [2024-11-23 23:35:31,905 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1485 to 1272. [2024-11-23 23:35:31,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1272 states, 810 states have (on average 1.9197530864197532) internal successors, (1555), 1267 states have internal predecessors, (1555), 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) [2024-11-23 23:35:31,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1272 states to 1272 states and 1561 transitions. [2024-11-23 23:35:31,912 INFO L78 Accepts]: Start accepts. Automaton has 1272 states and 1561 transitions. Word has length 10 [2024-11-23 23:35:31,913 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:35:31,913 INFO L471 AbstractCegarLoop]: Abstraction has 1272 states and 1561 transitions. [2024-11-23 23:35:31,913 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 5.0) internal successors, (10), 3 states have internal predecessors, (10), 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) [2024-11-23 23:35:31,913 INFO L276 IsEmpty]: Start isEmpty. Operand 1272 states and 1561 transitions. [2024-11-23 23:35:31,914 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2024-11-23 23:35:31,914 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:35:31,914 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:35:31,926 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_973d774c-f522-4607-b146-f2545de41032/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-23 23:35:32,114 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_973d774c-f522-4607-b146-f2545de41032/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 23:35:32,115 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 522 more)] === [2024-11-23 23:35:32,115 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:35:32,115 INFO L85 PathProgramCache]: Analyzing trace with hash 1952235123, now seen corresponding path program 1 times [2024-11-23 23:35:32,116 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-23 23:35:32,116 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [906998804] [2024-11-23 23:35:32,116 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:35:32,116 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 23:35:32,116 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_973d774c-f522-4607-b146-f2545de41032/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 23:35:32,120 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_973d774c-f522-4607-b146-f2545de41032/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 23:35:32,122 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_973d774c-f522-4607-b146-f2545de41032/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-23 23:35:32,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:35:32,269 INFO L256 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-23 23:35:32,272 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 23:35:32,287 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 [2024-11-23 23:35:32,325 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 23:35:32,325 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-23 23:35:32,325 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-23 23:35:32,326 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [906998804] [2024-11-23 23:35:32,326 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [906998804] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:35:32,326 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:35:32,326 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-23 23:35:32,326 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [477010613] [2024-11-23 23:35:32,326 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:35:32,326 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-23 23:35:32,326 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-23 23:35:32,327 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-23 23:35:32,327 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-23 23:35:32,327 INFO L87 Difference]: Start difference. First operand 1272 states and 1561 transitions. Second operand has 3 states, 2 states have (on average 5.0) internal successors, (10), 3 states have internal predecessors, (10), 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) [2024-11-23 23:35:35,378 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:35:35,379 INFO L93 Difference]: Finished difference Result 1696 states and 2102 transitions. [2024-11-23 23:35:35,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-23 23:35:35,379 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 5.0) internal successors, (10), 3 states have internal predecessors, (10), 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 10 [2024-11-23 23:35:35,379 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:35:35,385 INFO L225 Difference]: With dead ends: 1696 [2024-11-23 23:35:35,385 INFO L226 Difference]: Without dead ends: 1696 [2024-11-23 23:35:35,385 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-23 23:35:35,386 INFO L435 NwaCegarLoop]: 1053 mSDtfsCounter, 512 mSDsluCounter, 421 mSDsCounter, 0 mSdLazyCounter, 654 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 512 SdHoareTripleChecker+Valid, 1474 SdHoareTripleChecker+Invalid, 667 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 654 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2024-11-23 23:35:35,386 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [512 Valid, 1474 Invalid, 667 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 654 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2024-11-23 23:35:35,390 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1696 states. [2024-11-23 23:35:35,411 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1696 to 1299. [2024-11-23 23:35:35,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1299 states, 847 states have (on average 1.8984651711924438) internal successors, (1608), 1294 states have internal predecessors, (1608), 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) [2024-11-23 23:35:35,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1299 states to 1299 states and 1614 transitions. [2024-11-23 23:35:35,418 INFO L78 Accepts]: Start accepts. Automaton has 1299 states and 1614 transitions. Word has length 10 [2024-11-23 23:35:35,418 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:35:35,418 INFO L471 AbstractCegarLoop]: Abstraction has 1299 states and 1614 transitions. [2024-11-23 23:35:35,418 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 5.0) internal successors, (10), 3 states have internal predecessors, (10), 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) [2024-11-23 23:35:35,418 INFO L276 IsEmpty]: Start isEmpty. Operand 1299 states and 1614 transitions. [2024-11-23 23:35:35,419 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2024-11-23 23:35:35,419 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:35:35,419 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:35:35,435 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_973d774c-f522-4607-b146-f2545de41032/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-11-23 23:35:35,619 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_973d774c-f522-4607-b146-f2545de41032/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 23:35:35,620 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr419REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 522 more)] === [2024-11-23 23:35:35,620 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:35:35,620 INFO L85 PathProgramCache]: Analyzing trace with hash -2110860753, now seen corresponding path program 1 times [2024-11-23 23:35:35,620 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-23 23:35:35,621 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2075103932] [2024-11-23 23:35:35,621 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:35:35,621 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 23:35:35,621 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_973d774c-f522-4607-b146-f2545de41032/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 23:35:35,628 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_973d774c-f522-4607-b146-f2545de41032/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 23:35:35,629 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_973d774c-f522-4607-b146-f2545de41032/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-23 23:35:35,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:35:35,796 INFO L256 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-23 23:35:35,798 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 23:35:35,902 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 23:35:35,902 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-23 23:35:35,902 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-23 23:35:35,902 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2075103932] [2024-11-23 23:35:35,902 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2075103932] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:35:35,902 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:35:35,902 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-23 23:35:35,902 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1077258422] [2024-11-23 23:35:35,902 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:35:35,903 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-23 23:35:35,903 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-23 23:35:35,903 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-23 23:35:35,903 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-23 23:35:35,903 INFO L87 Difference]: Start difference. First operand 1299 states and 1614 transitions. Second operand has 3 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:35:36,265 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:35:36,265 INFO L93 Difference]: Finished difference Result 1552 states and 1762 transitions. [2024-11-23 23:35:36,266 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-23 23:35:36,266 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2024-11-23 23:35:36,266 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:35:36,269 INFO L225 Difference]: With dead ends: 1552 [2024-11-23 23:35:36,269 INFO L226 Difference]: Without dead ends: 1552 [2024-11-23 23:35:36,269 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-23 23:35:36,270 INFO L435 NwaCegarLoop]: 1105 mSDtfsCounter, 469 mSDsluCounter, 951 mSDsCounter, 0 mSdLazyCounter, 121 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 469 SdHoareTripleChecker+Valid, 2056 SdHoareTripleChecker+Invalid, 126 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 121 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-23 23:35:36,270 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [469 Valid, 2056 Invalid, 126 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 121 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-23 23:35:36,274 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1552 states. [2024-11-23 23:35:36,294 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1552 to 1284. [2024-11-23 23:35:36,297 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1284 states, 832 states have (on average 1.8689903846153846) internal successors, (1555), 1279 states have internal predecessors, (1555), 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) [2024-11-23 23:35:36,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1284 states to 1284 states and 1561 transitions. [2024-11-23 23:35:36,302 INFO L78 Accepts]: Start accepts. Automaton has 1284 states and 1561 transitions. Word has length 12 [2024-11-23 23:35:36,302 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:35:36,302 INFO L471 AbstractCegarLoop]: Abstraction has 1284 states and 1561 transitions. [2024-11-23 23:35:36,302 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:35:36,302 INFO L276 IsEmpty]: Start isEmpty. Operand 1284 states and 1561 transitions. [2024-11-23 23:35:36,303 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2024-11-23 23:35:36,303 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:35:36,303 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:35:36,314 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_973d774c-f522-4607-b146-f2545de41032/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2024-11-23 23:35:36,503 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_973d774c-f522-4607-b146-f2545de41032/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 23:35:36,504 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr330REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 522 more)] === [2024-11-23 23:35:36,505 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:35:36,505 INFO L85 PathProgramCache]: Analyzing trace with hash -1789694881, now seen corresponding path program 1 times [2024-11-23 23:35:36,505 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-23 23:35:36,505 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1990393831] [2024-11-23 23:35:36,505 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:35:36,505 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 23:35:36,505 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_973d774c-f522-4607-b146-f2545de41032/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 23:35:36,509 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_973d774c-f522-4607-b146-f2545de41032/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 23:35:36,511 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_973d774c-f522-4607-b146-f2545de41032/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-23 23:35:36,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:35:36,663 INFO L256 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-23 23:35:36,665 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 23:35:36,671 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 [2024-11-23 23:35:36,732 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 23:35:36,732 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-23 23:35:36,732 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-23 23:35:36,732 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1990393831] [2024-11-23 23:35:36,732 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1990393831] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:35:36,733 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:35:36,733 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-23 23:35:36,733 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1827051648] [2024-11-23 23:35:36,733 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:35:36,733 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-23 23:35:36,733 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-23 23:35:36,734 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-23 23:35:36,734 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-23 23:35:36,734 INFO L87 Difference]: Start difference. First operand 1284 states and 1561 transitions. Second operand has 4 states, 3 states have (on average 4.666666666666667) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:35:39,882 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:35:39,882 INFO L93 Difference]: Finished difference Result 1452 states and 1692 transitions. [2024-11-23 23:35:39,882 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-23 23:35:39,882 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.666666666666667) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2024-11-23 23:35:39,883 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:35:39,885 INFO L225 Difference]: With dead ends: 1452 [2024-11-23 23:35:39,885 INFO L226 Difference]: Without dead ends: 1452 [2024-11-23 23:35:39,886 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-23 23:35:39,886 INFO L435 NwaCegarLoop]: 588 mSDtfsCounter, 967 mSDsluCounter, 633 mSDsCounter, 0 mSdLazyCounter, 1047 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 970 SdHoareTripleChecker+Valid, 1221 SdHoareTripleChecker+Invalid, 1075 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 1047 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2024-11-23 23:35:39,886 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [970 Valid, 1221 Invalid, 1075 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 1047 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2024-11-23 23:35:39,888 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1452 states. [2024-11-23 23:35:39,904 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1452 to 1261. [2024-11-23 23:35:39,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1261 states, 832 states have (on average 1.7860576923076923) internal successors, (1486), 1256 states have internal predecessors, (1486), 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) [2024-11-23 23:35:39,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1261 states to 1261 states and 1492 transitions. [2024-11-23 23:35:39,911 INFO L78 Accepts]: Start accepts. Automaton has 1261 states and 1492 transitions. Word has length 14 [2024-11-23 23:35:39,911 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:35:39,911 INFO L471 AbstractCegarLoop]: Abstraction has 1261 states and 1492 transitions. [2024-11-23 23:35:39,911 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.666666666666667) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:35:39,911 INFO L276 IsEmpty]: Start isEmpty. Operand 1261 states and 1492 transitions. [2024-11-23 23:35:39,912 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2024-11-23 23:35:39,912 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:35:39,912 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:35:39,922 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_973d774c-f522-4607-b146-f2545de41032/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-11-23 23:35:40,116 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_973d774c-f522-4607-b146-f2545de41032/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 23:35:40,116 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr331REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 522 more)] === [2024-11-23 23:35:40,117 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:35:40,117 INFO L85 PathProgramCache]: Analyzing trace with hash -1789694880, now seen corresponding path program 1 times [2024-11-23 23:35:40,118 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-23 23:35:40,118 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [999731250] [2024-11-23 23:35:40,118 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:35:40,118 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 23:35:40,118 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_973d774c-f522-4607-b146-f2545de41032/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 23:35:40,121 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_973d774c-f522-4607-b146-f2545de41032/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 23:35:40,122 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_973d774c-f522-4607-b146-f2545de41032/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-23 23:35:40,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:35:40,278 INFO L256 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-23 23:35:40,280 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 23:35:40,294 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 [2024-11-23 23:35:40,412 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 23:35:40,412 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-23 23:35:40,412 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-23 23:35:40,412 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [999731250] [2024-11-23 23:35:40,412 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [999731250] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:35:40,412 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:35:40,413 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-23 23:35:40,413 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1787686286] [2024-11-23 23:35:40,413 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:35:40,413 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-23 23:35:40,413 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-23 23:35:40,414 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-23 23:35:40,414 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-23 23:35:40,414 INFO L87 Difference]: Start difference. First operand 1261 states and 1492 transitions. Second operand has 4 states, 3 states have (on average 4.666666666666667) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:35:44,492 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:35:44,493 INFO L93 Difference]: Finished difference Result 1454 states and 1663 transitions. [2024-11-23 23:35:44,493 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-23 23:35:44,493 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.666666666666667) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2024-11-23 23:35:44,493 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:35:44,497 INFO L225 Difference]: With dead ends: 1454 [2024-11-23 23:35:44,497 INFO L226 Difference]: Without dead ends: 1454 [2024-11-23 23:35:44,498 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-23 23:35:44,499 INFO L435 NwaCegarLoop]: 894 mSDtfsCounter, 337 mSDsluCounter, 1019 mSDsCounter, 0 mSdLazyCounter, 1123 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 337 SdHoareTripleChecker+Valid, 1913 SdHoareTripleChecker+Invalid, 1138 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 1123 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.0s IncrementalHoareTripleChecker+Time [2024-11-23 23:35:44,499 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [337 Valid, 1913 Invalid, 1138 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 1123 Invalid, 0 Unknown, 0 Unchecked, 4.0s Time] [2024-11-23 23:35:44,501 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1454 states. [2024-11-23 23:35:44,516 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1454 to 1242. [2024-11-23 23:35:44,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1242 states, 813 states have (on average 1.7761377613776137) internal successors, (1444), 1237 states have internal predecessors, (1444), 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) [2024-11-23 23:35:44,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1242 states to 1242 states and 1450 transitions. [2024-11-23 23:35:44,522 INFO L78 Accepts]: Start accepts. Automaton has 1242 states and 1450 transitions. Word has length 14 [2024-11-23 23:35:44,522 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:35:44,522 INFO L471 AbstractCegarLoop]: Abstraction has 1242 states and 1450 transitions. [2024-11-23 23:35:44,522 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.666666666666667) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:35:44,523 INFO L276 IsEmpty]: Start isEmpty. Operand 1242 states and 1450 transitions. [2024-11-23 23:35:44,523 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2024-11-23 23:35:44,523 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:35:44,523 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:35:44,534 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_973d774c-f522-4607-b146-f2545de41032/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-11-23 23:35:44,724 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_973d774c-f522-4607-b146-f2545de41032/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 23:35:44,724 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr421REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 522 more)] === [2024-11-23 23:35:44,724 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:35:44,724 INFO L85 PathProgramCache]: Analyzing trace with hash -2029365873, now seen corresponding path program 1 times [2024-11-23 23:35:44,725 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-23 23:35:44,725 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1685687030] [2024-11-23 23:35:44,725 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:35:44,725 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 23:35:44,725 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_973d774c-f522-4607-b146-f2545de41032/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 23:35:44,727 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_973d774c-f522-4607-b146-f2545de41032/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 23:35:44,728 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_973d774c-f522-4607-b146-f2545de41032/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-23 23:35:44,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:35:44,912 INFO L256 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-23 23:35:44,914 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 23:35:45,037 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 23:35:45,039 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-23 23:35:45,039 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-23 23:35:45,039 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1685687030] [2024-11-23 23:35:45,039 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1685687030] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:35:45,039 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:35:45,039 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-23 23:35:45,040 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [315114119] [2024-11-23 23:35:45,040 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:35:45,040 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-23 23:35:45,040 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-23 23:35:45,041 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-23 23:35:45,041 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-23 23:35:45,041 INFO L87 Difference]: Start difference. First operand 1242 states and 1450 transitions. Second operand has 4 states, 4 states have (on average 3.75) 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) [2024-11-23 23:35:45,877 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:35:45,877 INFO L93 Difference]: Finished difference Result 1489 states and 1653 transitions. [2024-11-23 23:35:45,877 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-23 23:35:45,877 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.75) 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 [2024-11-23 23:35:45,877 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:35:45,881 INFO L225 Difference]: With dead ends: 1489 [2024-11-23 23:35:45,881 INFO L226 Difference]: Without dead ends: 1489 [2024-11-23 23:35:45,881 INFO L434 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 [2024-11-23 23:35:45,881 INFO L435 NwaCegarLoop]: 1123 mSDtfsCounter, 449 mSDsluCounter, 1946 mSDsCounter, 0 mSdLazyCounter, 262 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 449 SdHoareTripleChecker+Valid, 3069 SdHoareTripleChecker+Invalid, 265 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 262 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-23 23:35:45,882 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [449 Valid, 3069 Invalid, 265 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 262 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-23 23:35:45,883 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1489 states. [2024-11-23 23:35:45,913 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1489 to 1244. [2024-11-23 23:35:45,915 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1244 states, 815 states have (on average 1.7742331288343558) internal successors, (1446), 1239 states have internal predecessors, (1446), 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) [2024-11-23 23:35:45,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1244 states to 1244 states and 1452 transitions. [2024-11-23 23:35:45,919 INFO L78 Accepts]: Start accepts. Automaton has 1244 states and 1452 transitions. Word has length 15 [2024-11-23 23:35:45,919 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:35:45,919 INFO L471 AbstractCegarLoop]: Abstraction has 1244 states and 1452 transitions. [2024-11-23 23:35:45,919 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.75) 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) [2024-11-23 23:35:45,919 INFO L276 IsEmpty]: Start isEmpty. Operand 1244 states and 1452 transitions. [2024-11-23 23:35:45,920 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2024-11-23 23:35:45,920 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:35:45,920 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:35:45,932 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_973d774c-f522-4607-b146-f2545de41032/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-11-23 23:35:46,120 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_973d774c-f522-4607-b146-f2545de41032/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 23:35:46,121 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr524ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 522 more)] === [2024-11-23 23:35:46,122 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:35:46,122 INFO L85 PathProgramCache]: Analyzing trace with hash -2029355055, now seen corresponding path program 1 times [2024-11-23 23:35:46,122 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-23 23:35:46,122 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [882844900] [2024-11-23 23:35:46,123 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:35:46,123 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 23:35:46,123 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_973d774c-f522-4607-b146-f2545de41032/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 23:35:46,125 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_973d774c-f522-4607-b146-f2545de41032/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 23:35:46,128 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_973d774c-f522-4607-b146-f2545de41032/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-23 23:35:46,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:35:46,312 INFO L256 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-23 23:35:46,317 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 23:35:46,453 WARN L873 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_main_~#i~0#1.base_47| (_ BitVec 32))) (and (= |c_#valid| (store |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#i~0#1.base_47| (_ bv0 1))) (= (_ bv0 1) (select |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#i~0#1.base_47|)))) is different from true [2024-11-23 23:35:46,454 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 23:35:46,454 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-23 23:35:46,455 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-23 23:35:46,455 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [882844900] [2024-11-23 23:35:46,455 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [882844900] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:35:46,455 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:35:46,455 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-23 23:35:46,455 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [102192391] [2024-11-23 23:35:46,455 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:35:46,456 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-23 23:35:46,456 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-23 23:35:46,456 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-23 23:35:46,456 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=4, Unknown=1, NotChecked=2, Total=12 [2024-11-23 23:35:46,456 INFO L87 Difference]: Start difference. First operand 1244 states and 1452 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) [2024-11-23 23:35:48,325 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:35:48,326 INFO L93 Difference]: Finished difference Result 1261 states and 1459 transitions. [2024-11-23 23:35:48,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-23 23:35:48,326 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 [2024-11-23 23:35:48,326 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:35:48,329 INFO L225 Difference]: With dead ends: 1261 [2024-11-23 23:35:48,329 INFO L226 Difference]: Without dead ends: 1255 [2024-11-23 23:35:48,329 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=4, Unknown=1, NotChecked=2, Total=12 [2024-11-23 23:35:48,329 INFO L435 NwaCegarLoop]: 996 mSDtfsCounter, 81 mSDsluCounter, 560 mSDsCounter, 0 mSdLazyCounter, 467 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 81 SdHoareTripleChecker+Valid, 1556 SdHoareTripleChecker+Invalid, 1571 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 467 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1104 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2024-11-23 23:35:48,330 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [81 Valid, 1556 Invalid, 1571 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 467 Invalid, 0 Unknown, 1104 Unchecked, 1.8s Time] [2024-11-23 23:35:48,331 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1255 states. [2024-11-23 23:35:48,344 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1255 to 1244. [2024-11-23 23:35:48,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1244 states, 815 states have (on average 1.7730061349693251) internal successors, (1445), 1239 states have internal predecessors, (1445), 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) [2024-11-23 23:35:48,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1244 states to 1244 states and 1451 transitions. [2024-11-23 23:35:48,350 INFO L78 Accepts]: Start accepts. Automaton has 1244 states and 1451 transitions. Word has length 15 [2024-11-23 23:35:48,350 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:35:48,350 INFO L471 AbstractCegarLoop]: Abstraction has 1244 states and 1451 transitions. [2024-11-23 23:35:48,350 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) [2024-11-23 23:35:48,351 INFO L276 IsEmpty]: Start isEmpty. Operand 1244 states and 1451 transitions. [2024-11-23 23:35:48,351 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2024-11-23 23:35:48,351 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:35:48,351 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:35:48,363 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_973d774c-f522-4607-b146-f2545de41032/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-11-23 23:35:48,552 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_973d774c-f522-4607-b146-f2545de41032/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 23:35:48,552 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr355REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 522 more)] === [2024-11-23 23:35:48,552 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:35:48,552 INFO L85 PathProgramCache]: Analyzing trace with hash -1909716041, now seen corresponding path program 1 times [2024-11-23 23:35:48,553 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-23 23:35:48,553 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [615956073] [2024-11-23 23:35:48,553 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:35:48,553 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 23:35:48,553 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_973d774c-f522-4607-b146-f2545de41032/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 23:35:48,555 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_973d774c-f522-4607-b146-f2545de41032/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 23:35:48,556 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_973d774c-f522-4607-b146-f2545de41032/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-11-23 23:35:48,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:35:48,719 INFO L256 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-23 23:35:48,721 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 23:35:48,749 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 23:35:48,750 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-23 23:35:48,750 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-23 23:35:48,750 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [615956073] [2024-11-23 23:35:48,750 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [615956073] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:35:48,750 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:35:48,750 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-23 23:35:48,751 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1719702359] [2024-11-23 23:35:48,751 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:35:48,751 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-23 23:35:48,751 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-23 23:35:48,752 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-23 23:35:48,752 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-23 23:35:48,752 INFO L87 Difference]: Start difference. First operand 1244 states and 1451 transitions. Second operand has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:35:48,874 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:35:48,874 INFO L93 Difference]: Finished difference Result 1166 states and 1330 transitions. [2024-11-23 23:35:48,875 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-23 23:35:48,875 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2024-11-23 23:35:48,875 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:35:48,878 INFO L225 Difference]: With dead ends: 1166 [2024-11-23 23:35:48,878 INFO L226 Difference]: Without dead ends: 1166 [2024-11-23 23:35:48,879 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-23 23:35:48,880 INFO L435 NwaCegarLoop]: 932 mSDtfsCounter, 45 mSDsluCounter, 1841 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 2773 SdHoareTripleChecker+Invalid, 60 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-23 23:35:48,880 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [45 Valid, 2773 Invalid, 60 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-23 23:35:48,882 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1166 states. [2024-11-23 23:35:48,894 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1166 to 1166. [2024-11-23 23:35:48,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1166 states, 756 states have (on average 1.7513227513227514) internal successors, (1324), 1161 states have internal predecessors, (1324), 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) [2024-11-23 23:35:48,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1166 states to 1166 states and 1330 transitions. [2024-11-23 23:35:48,898 INFO L78 Accepts]: Start accepts. Automaton has 1166 states and 1330 transitions. Word has length 16 [2024-11-23 23:35:48,899 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:35:48,899 INFO L471 AbstractCegarLoop]: Abstraction has 1166 states and 1330 transitions. [2024-11-23 23:35:48,899 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-23 23:35:48,899 INFO L276 IsEmpty]: Start isEmpty. Operand 1166 states and 1330 transitions. [2024-11-23 23:35:48,900 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2024-11-23 23:35:48,900 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:35:48,900 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:35:48,911 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_973d774c-f522-4607-b146-f2545de41032/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2024-11-23 23:35:49,104 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_973d774c-f522-4607-b146-f2545de41032/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 23:35:49,104 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr15REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 522 more)] === [2024-11-23 23:35:49,105 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:35:49,105 INFO L85 PathProgramCache]: Analyzing trace with hash 2113969666, now seen corresponding path program 1 times [2024-11-23 23:35:49,105 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-23 23:35:49,106 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [351019330] [2024-11-23 23:35:49,106 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:35:49,106 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 23:35:49,106 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_973d774c-f522-4607-b146-f2545de41032/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 23:35:49,108 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_973d774c-f522-4607-b146-f2545de41032/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 23:35:49,112 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_973d774c-f522-4607-b146-f2545de41032/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-11-23 23:35:49,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:35:49,317 INFO L256 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-23 23:35:49,320 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 23:35:49,336 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2024-11-23 23:35:49,495 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 23:35:49,496 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-23 23:35:49,496 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-23 23:35:49,496 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [351019330] [2024-11-23 23:35:49,496 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [351019330] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:35:49,496 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:35:49,496 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-23 23:35:49,497 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [177650300] [2024-11-23 23:35:49,497 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:35:49,497 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-23 23:35:49,497 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-23 23:35:49,498 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-23 23:35:49,498 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-23 23:35:49,498 INFO L87 Difference]: Start difference. First operand 1166 states and 1330 transitions. Second operand has 4 states, 3 states have (on average 6.666666666666667) internal successors, (20), 4 states have internal predecessors, (20), 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) [2024-11-23 23:35:53,448 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:35:53,448 INFO L93 Difference]: Finished difference Result 1560 states and 1786 transitions. [2024-11-23 23:35:53,448 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-23 23:35:53,449 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 6.666666666666667) internal successors, (20), 4 states have internal predecessors, (20), 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 20 [2024-11-23 23:35:53,449 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:35:53,453 INFO L225 Difference]: With dead ends: 1560 [2024-11-23 23:35:53,453 INFO L226 Difference]: Without dead ends: 1560 [2024-11-23 23:35:53,453 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-23 23:35:53,454 INFO L435 NwaCegarLoop]: 992 mSDtfsCounter, 597 mSDsluCounter, 990 mSDsCounter, 0 mSdLazyCounter, 1192 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 597 SdHoareTripleChecker+Valid, 1982 SdHoareTripleChecker+Invalid, 1214 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 1192 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.9s IncrementalHoareTripleChecker+Time [2024-11-23 23:35:53,454 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [597 Valid, 1982 Invalid, 1214 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 1192 Invalid, 0 Unknown, 0 Unchecked, 3.9s Time] [2024-11-23 23:35:53,456 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1560 states. [2024-11-23 23:35:53,471 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1560 to 1282. [2024-11-23 23:35:53,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1282 states, 872 states have (on average 1.731651376146789) internal successors, (1510), 1277 states have internal predecessors, (1510), 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) [2024-11-23 23:35:53,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1282 states to 1282 states and 1516 transitions. [2024-11-23 23:35:53,477 INFO L78 Accepts]: Start accepts. Automaton has 1282 states and 1516 transitions. Word has length 20 [2024-11-23 23:35:53,477 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:35:53,477 INFO L471 AbstractCegarLoop]: Abstraction has 1282 states and 1516 transitions. [2024-11-23 23:35:53,477 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 6.666666666666667) internal successors, (20), 4 states have internal predecessors, (20), 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) [2024-11-23 23:35:53,478 INFO L276 IsEmpty]: Start isEmpty. Operand 1282 states and 1516 transitions. [2024-11-23 23:35:53,478 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2024-11-23 23:35:53,478 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:35:53,478 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:35:53,492 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_973d774c-f522-4607-b146-f2545de41032/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2024-11-23 23:35:53,679 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_973d774c-f522-4607-b146-f2545de41032/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 23:35:53,679 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr14REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 522 more)] === [2024-11-23 23:35:53,679 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:35:53,680 INFO L85 PathProgramCache]: Analyzing trace with hash 2113969665, now seen corresponding path program 1 times [2024-11-23 23:35:53,680 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-23 23:35:53,680 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1092153680] [2024-11-23 23:35:53,680 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:35:53,680 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 23:35:53,680 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_973d774c-f522-4607-b146-f2545de41032/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 23:35:53,682 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_973d774c-f522-4607-b146-f2545de41032/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 23:35:53,685 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_973d774c-f522-4607-b146-f2545de41032/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-11-23 23:35:53,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:35:53,902 INFO L256 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-23 23:35:53,904 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 23:35:53,962 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 23:35:53,962 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-23 23:35:53,963 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-23 23:35:53,963 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1092153680] [2024-11-23 23:35:53,963 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1092153680] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:35:53,963 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:35:53,963 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-23 23:35:53,964 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1861224367] [2024-11-23 23:35:53,964 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:35:53,964 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-23 23:35:53,964 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-23 23:35:53,965 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-23 23:35:53,965 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-23 23:35:53,965 INFO L87 Difference]: Start difference. First operand 1282 states and 1516 transitions. Second operand has 4 states, 3 states have (on average 6.666666666666667) internal successors, (20), 4 states have internal predecessors, (20), 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) [2024-11-23 23:35:56,783 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:35:56,784 INFO L93 Difference]: Finished difference Result 1270 states and 1434 transitions. [2024-11-23 23:35:56,784 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-23 23:35:56,784 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 6.666666666666667) internal successors, (20), 4 states have internal predecessors, (20), 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 20 [2024-11-23 23:35:56,784 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:35:56,788 INFO L225 Difference]: With dead ends: 1270 [2024-11-23 23:35:56,788 INFO L226 Difference]: Without dead ends: 1270 [2024-11-23 23:35:56,788 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-23 23:35:56,788 INFO L435 NwaCegarLoop]: 645 mSDtfsCounter, 728 mSDsluCounter, 631 mSDsCounter, 0 mSdLazyCounter, 971 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 731 SdHoareTripleChecker+Valid, 1276 SdHoareTripleChecker+Invalid, 999 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 971 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2024-11-23 23:35:56,788 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [731 Valid, 1276 Invalid, 999 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 971 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2024-11-23 23:35:56,790 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1270 states. [2024-11-23 23:35:56,796 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1270 to 1259. [2024-11-23 23:35:56,797 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1259 states, 872 states have (on average 1.6261467889908257) internal successors, (1418), 1254 states have internal predecessors, (1418), 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) [2024-11-23 23:35:56,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1259 states to 1259 states and 1424 transitions. [2024-11-23 23:35:56,800 INFO L78 Accepts]: Start accepts. Automaton has 1259 states and 1424 transitions. Word has length 20 [2024-11-23 23:35:56,800 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:35:56,800 INFO L471 AbstractCegarLoop]: Abstraction has 1259 states and 1424 transitions. [2024-11-23 23:35:56,800 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 6.666666666666667) internal successors, (20), 4 states have internal predecessors, (20), 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) [2024-11-23 23:35:56,800 INFO L276 IsEmpty]: Start isEmpty. Operand 1259 states and 1424 transitions. [2024-11-23 23:35:56,801 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2024-11-23 23:35:56,801 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:35:56,801 INFO L218 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:35:56,812 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_973d774c-f522-4607-b146-f2545de41032/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2024-11-23 23:35:57,005 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_973d774c-f522-4607-b146-f2545de41032/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 23:35:57,005 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr15REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 522 more)] === [2024-11-23 23:35:57,005 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:35:57,005 INFO L85 PathProgramCache]: Analyzing trace with hash 1029891552, now seen corresponding path program 1 times [2024-11-23 23:35:57,006 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-23 23:35:57,006 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1555430758] [2024-11-23 23:35:57,006 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:35:57,006 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 23:35:57,006 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_973d774c-f522-4607-b146-f2545de41032/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 23:35:57,008 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_973d774c-f522-4607-b146-f2545de41032/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 23:35:57,016 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_973d774c-f522-4607-b146-f2545de41032/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-11-23 23:35:57,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:35:57,221 INFO L256 TraceCheckSpWp]: Trace formula consists of 202 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-23 23:35:57,223 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 23:35:57,233 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 [2024-11-23 23:35:57,518 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 23:35:57,519 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-23 23:35:58,155 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 23:35:58,155 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-23 23:35:58,155 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1555430758] [2024-11-23 23:35:58,155 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1555430758] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-23 23:35:58,155 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-23 23:35:58,155 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 7 [2024-11-23 23:35:58,155 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [261118257] [2024-11-23 23:35:58,155 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-23 23:35:58,157 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-23 23:35:58,157 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-23 23:35:58,157 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-23 23:35:58,157 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-11-23 23:35:58,158 INFO L87 Difference]: Start difference. First operand 1259 states and 1424 transitions. Second operand has 8 states, 7 states have (on average 10.285714285714286) internal successors, (72), 8 states have internal predecessors, (72), 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) [2024-11-23 23:36:08,404 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:36:08,404 INFO L93 Difference]: Finished difference Result 1899 states and 2190 transitions. [2024-11-23 23:36:08,405 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-23 23:36:08,405 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 10.285714285714286) internal successors, (72), 8 states have internal predecessors, (72), 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 39 [2024-11-23 23:36:08,405 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:36:08,409 INFO L225 Difference]: With dead ends: 1899 [2024-11-23 23:36:08,409 INFO L226 Difference]: Without dead ends: 1899 [2024-11-23 23:36:08,410 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 70 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=48, Invalid=84, Unknown=0, NotChecked=0, Total=132 [2024-11-23 23:36:08,410 INFO L435 NwaCegarLoop]: 1020 mSDtfsCounter, 1922 mSDsluCounter, 1701 mSDsCounter, 0 mSdLazyCounter, 1808 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1923 SdHoareTripleChecker+Valid, 2721 SdHoareTripleChecker+Invalid, 1835 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 1808 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.0s IncrementalHoareTripleChecker+Time [2024-11-23 23:36:08,410 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1923 Valid, 2721 Invalid, 1835 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 1808 Invalid, 0 Unknown, 0 Unchecked, 10.0s Time] [2024-11-23 23:36:08,413 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1899 states. [2024-11-23 23:36:08,428 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1899 to 1425. [2024-11-23 23:36:08,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1425 states, 1038 states have (on average 1.5915221579961465) internal successors, (1652), 1420 states have internal predecessors, (1652), 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) [2024-11-23 23:36:08,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1425 states to 1425 states and 1658 transitions. [2024-11-23 23:36:08,434 INFO L78 Accepts]: Start accepts. Automaton has 1425 states and 1658 transitions. Word has length 39 [2024-11-23 23:36:08,434 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:36:08,434 INFO L471 AbstractCegarLoop]: Abstraction has 1425 states and 1658 transitions. [2024-11-23 23:36:08,434 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 10.285714285714286) internal successors, (72), 8 states have internal predecessors, (72), 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) [2024-11-23 23:36:08,434 INFO L276 IsEmpty]: Start isEmpty. Operand 1425 states and 1658 transitions. [2024-11-23 23:36:08,436 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2024-11-23 23:36:08,436 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:36:08,436 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:36:08,453 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_973d774c-f522-4607-b146-f2545de41032/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2024-11-23 23:36:08,636 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_973d774c-f522-4607-b146-f2545de41032/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 23:36:08,637 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr414ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 522 more)] === [2024-11-23 23:36:08,637 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:36:08,637 INFO L85 PathProgramCache]: Analyzing trace with hash -797594166, now seen corresponding path program 1 times [2024-11-23 23:36:08,638 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-23 23:36:08,639 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [243942241] [2024-11-23 23:36:08,639 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:36:08,639 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 23:36:08,639 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_973d774c-f522-4607-b146-f2545de41032/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 23:36:08,641 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_973d774c-f522-4607-b146-f2545de41032/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 23:36:08,646 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_973d774c-f522-4607-b146-f2545de41032/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2024-11-23 23:36:08,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:36:08,878 INFO L256 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-23 23:36:08,880 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 23:36:08,945 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 23:36:08,946 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-23 23:36:08,946 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-23 23:36:08,946 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [243942241] [2024-11-23 23:36:08,946 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [243942241] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:36:08,946 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:36:08,946 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-23 23:36:08,946 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [453850122] [2024-11-23 23:36:08,946 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:36:08,946 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-23 23:36:08,947 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-23 23:36:08,947 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-23 23:36:08,947 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-23 23:36:08,947 INFO L87 Difference]: Start difference. First operand 1425 states and 1658 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) [2024-11-23 23:36:09,034 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:36:09,035 INFO L93 Difference]: Finished difference Result 1407 states and 1628 transitions. [2024-11-23 23:36:09,035 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-23 23:36:09,035 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 [2024-11-23 23:36:09,036 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:36:09,040 INFO L225 Difference]: With dead ends: 1407 [2024-11-23 23:36:09,040 INFO L226 Difference]: Without dead ends: 1407 [2024-11-23 23:36:09,040 INFO L434 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 [2024-11-23 23:36:09,041 INFO L435 NwaCegarLoop]: 911 mSDtfsCounter, 27 mSDsluCounter, 1785 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 2696 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 [2024-11-23 23:36:09,042 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [27 Valid, 2696 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-23 23:36:09,044 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1407 states. [2024-11-23 23:36:09,073 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1407 to 1407. [2024-11-23 23:36:09,075 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1407 states, 1020 states have (on average 1.5901960784313725) internal successors, (1622), 1402 states have internal predecessors, (1622), 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) [2024-11-23 23:36:09,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1407 states to 1407 states and 1628 transitions. [2024-11-23 23:36:09,079 INFO L78 Accepts]: Start accepts. Automaton has 1407 states and 1628 transitions. Word has length 50 [2024-11-23 23:36:09,079 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:36:09,079 INFO L471 AbstractCegarLoop]: Abstraction has 1407 states and 1628 transitions. [2024-11-23 23:36:09,079 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) [2024-11-23 23:36:09,080 INFO L276 IsEmpty]: Start isEmpty. Operand 1407 states and 1628 transitions. [2024-11-23 23:36:09,080 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2024-11-23 23:36:09,081 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:36:09,081 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:36:09,096 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_973d774c-f522-4607-b146-f2545de41032/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2024-11-23 23:36:09,282 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_973d774c-f522-4607-b146-f2545de41032/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 23:36:09,282 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr71REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 522 more)] === [2024-11-23 23:36:09,283 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:36:09,283 INFO L85 PathProgramCache]: Analyzing trace with hash 24010691, now seen corresponding path program 1 times [2024-11-23 23:36:09,283 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-23 23:36:09,283 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1370261744] [2024-11-23 23:36:09,284 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:36:09,284 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 23:36:09,284 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_973d774c-f522-4607-b146-f2545de41032/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 23:36:09,286 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_973d774c-f522-4607-b146-f2545de41032/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 23:36:09,287 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_973d774c-f522-4607-b146-f2545de41032/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2024-11-23 23:36:09,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:36:09,595 INFO L256 TraceCheckSpWp]: Trace formula consists of 255 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-23 23:36:09,597 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 23:36:09,651 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 23:36:09,651 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-23 23:36:09,651 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-23 23:36:09,652 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1370261744] [2024-11-23 23:36:09,652 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1370261744] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:36:09,652 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:36:09,652 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-23 23:36:09,652 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1414313915] [2024-11-23 23:36:09,652 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:36:09,652 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-23 23:36:09,653 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-23 23:36:09,653 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-23 23:36:09,653 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-23 23:36:09,654 INFO L87 Difference]: Start difference. First operand 1407 states and 1628 transitions. Second operand has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 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) [2024-11-23 23:36:09,767 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:36:09,768 INFO L93 Difference]: Finished difference Result 1092 states and 1188 transitions. [2024-11-23 23:36:09,768 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-23 23:36:09,769 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 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 55 [2024-11-23 23:36:09,769 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:36:09,772 INFO L225 Difference]: With dead ends: 1092 [2024-11-23 23:36:09,772 INFO L226 Difference]: Without dead ends: 1092 [2024-11-23 23:36:09,772 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-23 23:36:09,773 INFO L435 NwaCegarLoop]: 865 mSDtfsCounter, 56 mSDsluCounter, 1657 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56 SdHoareTripleChecker+Valid, 2522 SdHoareTripleChecker+Invalid, 77 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-23 23:36:09,773 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [56 Valid, 2522 Invalid, 77 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-23 23:36:09,775 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1092 states. [2024-11-23 23:36:09,785 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1092 to 1090. [2024-11-23 23:36:09,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1090 states, 726 states have (on average 1.6253443526170799) internal successors, (1180), 1085 states have internal predecessors, (1180), 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) [2024-11-23 23:36:09,788 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1090 states to 1090 states and 1186 transitions. [2024-11-23 23:36:09,789 INFO L78 Accepts]: Start accepts. Automaton has 1090 states and 1186 transitions. Word has length 55 [2024-11-23 23:36:09,789 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:36:09,789 INFO L471 AbstractCegarLoop]: Abstraction has 1090 states and 1186 transitions. [2024-11-23 23:36:09,789 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 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) [2024-11-23 23:36:09,789 INFO L276 IsEmpty]: Start isEmpty. Operand 1090 states and 1186 transitions. [2024-11-23 23:36:09,790 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2024-11-23 23:36:09,790 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:36:09,790 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:36:09,805 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_973d774c-f522-4607-b146-f2545de41032/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2024-11-23 23:36:09,990 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_973d774c-f522-4607-b146-f2545de41032/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 23:36:09,991 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr414ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 522 more)] === [2024-11-23 23:36:09,991 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:36:09,991 INFO L85 PathProgramCache]: Analyzing trace with hash -355383530, now seen corresponding path program 1 times [2024-11-23 23:36:09,992 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-23 23:36:09,992 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [885609337] [2024-11-23 23:36:09,992 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:36:09,992 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 23:36:09,992 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_973d774c-f522-4607-b146-f2545de41032/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 23:36:09,994 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_973d774c-f522-4607-b146-f2545de41032/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 23:36:09,995 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_973d774c-f522-4607-b146-f2545de41032/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2024-11-23 23:36:10,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:36:10,215 INFO L256 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-23 23:36:10,217 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 23:36:10,237 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-23 23:36:10,238 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-23 23:36:10,239 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-23 23:36:10,242 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 39 [2024-11-23 23:36:10,350 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-23 23:36:10,350 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 70 treesize of output 26 [2024-11-23 23:36:10,425 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 23:36:10,425 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-23 23:36:10,425 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-23 23:36:10,426 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [885609337] [2024-11-23 23:36:10,426 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [885609337] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:36:10,426 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:36:10,426 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-23 23:36:10,426 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1610130062] [2024-11-23 23:36:10,426 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:36:10,426 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-23 23:36:10,426 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-23 23:36:10,430 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-23 23:36:10,430 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-11-23 23:36:10,430 INFO L87 Difference]: Start difference. First operand 1090 states and 1186 transitions. Second operand has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 6 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) [2024-11-23 23:36:11,141 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:36:11,141 INFO L93 Difference]: Finished difference Result 1562 states and 1688 transitions. [2024-11-23 23:36:11,142 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-23 23:36:11,142 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 6 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 [2024-11-23 23:36:11,142 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:36:11,147 INFO L225 Difference]: With dead ends: 1562 [2024-11-23 23:36:11,148 INFO L226 Difference]: Without dead ends: 1559 [2024-11-23 23:36:11,148 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 53 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2024-11-23 23:36:11,148 INFO L435 NwaCegarLoop]: 853 mSDtfsCounter, 1852 mSDsluCounter, 2317 mSDsCounter, 0 mSdLazyCounter, 128 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1858 SdHoareTripleChecker+Valid, 3170 SdHoareTripleChecker+Invalid, 133 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 128 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-23 23:36:11,149 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1858 Valid, 3170 Invalid, 133 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 128 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-23 23:36:11,150 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1559 states. [2024-11-23 23:36:11,162 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1559 to 1036. [2024-11-23 23:36:11,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1036 states, 672 states have (on average 1.6726190476190477) internal successors, (1124), 1031 states have internal predecessors, (1124), 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) [2024-11-23 23:36:11,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1036 states to 1036 states and 1130 transitions. [2024-11-23 23:36:11,166 INFO L78 Accepts]: Start accepts. Automaton has 1036 states and 1130 transitions. Word has length 58 [2024-11-23 23:36:11,166 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:36:11,166 INFO L471 AbstractCegarLoop]: Abstraction has 1036 states and 1130 transitions. [2024-11-23 23:36:11,166 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 6 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) [2024-11-23 23:36:11,166 INFO L276 IsEmpty]: Start isEmpty. Operand 1036 states and 1130 transitions. [2024-11-23 23:36:11,168 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2024-11-23 23:36:11,168 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:36:11,168 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:36:11,181 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_973d774c-f522-4607-b146-f2545de41032/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2024-11-23 23:36:11,368 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_973d774c-f522-4607-b146-f2545de41032/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 23:36:11,369 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr71REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 522 more)] === [2024-11-23 23:36:11,370 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:36:11,370 INFO L85 PathProgramCache]: Analyzing trace with hash 54784503, now seen corresponding path program 1 times [2024-11-23 23:36:11,371 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-23 23:36:11,371 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [508057721] [2024-11-23 23:36:11,371 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:36:11,371 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 23:36:11,371 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_973d774c-f522-4607-b146-f2545de41032/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 23:36:11,373 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_973d774c-f522-4607-b146-f2545de41032/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 23:36:11,378 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_973d774c-f522-4607-b146-f2545de41032/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2024-11-23 23:36:11,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:36:11,713 INFO L256 TraceCheckSpWp]: Trace formula consists of 279 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-23 23:36:11,715 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 23:36:11,725 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 [2024-11-23 23:36:12,501 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-23 23:36:12,502 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 [2024-11-23 23:36:12,525 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2024-11-23 23:36:12,525 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 [2024-11-23 23:36:12,531 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 23:36:12,531 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-23 23:36:12,532 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-23 23:36:12,532 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [508057721] [2024-11-23 23:36:12,532 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [508057721] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:36:12,532 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:36:12,532 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-23 23:36:12,532 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1597286347] [2024-11-23 23:36:12,532 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:36:12,533 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-23 23:36:12,533 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-23 23:36:12,533 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-23 23:36:12,533 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-23 23:36:12,534 INFO L87 Difference]: Start difference. First operand 1036 states and 1130 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) [2024-11-23 23:36:15,858 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:36:15,859 INFO L93 Difference]: Finished difference Result 998 states and 1092 transitions. [2024-11-23 23:36:15,859 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-23 23:36:15,859 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 [2024-11-23 23:36:15,859 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:36:15,862 INFO L225 Difference]: With dead ends: 998 [2024-11-23 23:36:15,863 INFO L226 Difference]: Without dead ends: 998 [2024-11-23 23:36:15,863 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 59 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2024-11-23 23:36:15,863 INFO L435 NwaCegarLoop]: 450 mSDtfsCounter, 616 mSDsluCounter, 463 mSDsCounter, 0 mSdLazyCounter, 1185 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 619 SdHoareTripleChecker+Valid, 913 SdHoareTripleChecker+Invalid, 1227 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 1185 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2024-11-23 23:36:15,864 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [619 Valid, 913 Invalid, 1227 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 1185 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time] [2024-11-23 23:36:15,865 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 998 states. [2024-11-23 23:36:15,874 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 998 to 961. [2024-11-23 23:36:15,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 961 states, 635 states have (on average 1.5937007874015747) internal successors, (1012), 956 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) [2024-11-23 23:36:15,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 961 states to 961 states and 1018 transitions. [2024-11-23 23:36:15,878 INFO L78 Accepts]: Start accepts. Automaton has 961 states and 1018 transitions. Word has length 63 [2024-11-23 23:36:15,878 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:36:15,878 INFO L471 AbstractCegarLoop]: Abstraction has 961 states and 1018 transitions. [2024-11-23 23:36:15,879 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) [2024-11-23 23:36:15,879 INFO L276 IsEmpty]: Start isEmpty. Operand 961 states and 1018 transitions. [2024-11-23 23:36:15,880 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2024-11-23 23:36:15,880 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:36:15,880 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:36:15,897 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_973d774c-f522-4607-b146-f2545de41032/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2024-11-23 23:36:16,080 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_973d774c-f522-4607-b146-f2545de41032/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 23:36:16,081 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr76REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 522 more)] === [2024-11-23 23:36:16,081 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:36:16,081 INFO L85 PathProgramCache]: Analyzing trace with hash -2089651903, now seen corresponding path program 1 times [2024-11-23 23:36:16,082 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-23 23:36:16,082 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [325458161] [2024-11-23 23:36:16,082 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:36:16,082 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 23:36:16,082 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_973d774c-f522-4607-b146-f2545de41032/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 23:36:16,084 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_973d774c-f522-4607-b146-f2545de41032/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 23:36:16,089 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_973d774c-f522-4607-b146-f2545de41032/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2024-11-23 23:36:16,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:36:16,418 INFO L256 TraceCheckSpWp]: Trace formula consists of 306 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-23 23:36:16,420 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 23:36:16,431 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 [2024-11-23 23:36:16,456 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 [2024-11-23 23:36:16,489 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2024-11-23 23:36:16,507 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 23:36:16,507 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-23 23:36:16,507 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-23 23:36:16,507 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [325458161] [2024-11-23 23:36:16,507 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [325458161] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:36:16,508 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:36:16,508 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-23 23:36:16,508 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [853817408] [2024-11-23 23:36:16,508 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:36:16,508 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-23 23:36:16,509 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-23 23:36:16,509 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-23 23:36:16,511 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-23 23:36:16,511 INFO L87 Difference]: Start difference. First operand 961 states and 1018 transitions. Second operand has 5 states, 4 states have (on average 17.0) internal successors, (68), 5 states have internal predecessors, (68), 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) [2024-11-23 23:36:19,296 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:36:19,296 INFO L93 Difference]: Finished difference Result 960 states and 1017 transitions. [2024-11-23 23:36:19,297 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-23 23:36:19,297 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 17.0) internal successors, (68), 5 states have internal predecessors, (68), 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 68 [2024-11-23 23:36:19,297 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:36:19,300 INFO L225 Difference]: With dead ends: 960 [2024-11-23 23:36:19,300 INFO L226 Difference]: Without dead ends: 960 [2024-11-23 23:36:19,300 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 64 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-23 23:36:19,301 INFO L435 NwaCegarLoop]: 838 mSDtfsCounter, 2 mSDsluCounter, 1349 mSDsCounter, 0 mSdLazyCounter, 1172 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 2187 SdHoareTripleChecker+Invalid, 1173 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1172 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2024-11-23 23:36:19,301 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 2187 Invalid, 1173 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1172 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2024-11-23 23:36:19,302 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 960 states. [2024-11-23 23:36:19,309 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 960 to 960. [2024-11-23 23:36:19,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 960 states, 635 states have (on average 1.5921259842519686) internal successors, (1011), 955 states have internal predecessors, (1011), 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) [2024-11-23 23:36:19,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 960 states to 960 states and 1017 transitions. [2024-11-23 23:36:19,311 INFO L78 Accepts]: Start accepts. Automaton has 960 states and 1017 transitions. Word has length 68 [2024-11-23 23:36:19,311 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:36:19,311 INFO L471 AbstractCegarLoop]: Abstraction has 960 states and 1017 transitions. [2024-11-23 23:36:19,311 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 17.0) internal successors, (68), 5 states have internal predecessors, (68), 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) [2024-11-23 23:36:19,311 INFO L276 IsEmpty]: Start isEmpty. Operand 960 states and 1017 transitions. [2024-11-23 23:36:19,312 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2024-11-23 23:36:19,312 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:36:19,312 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:36:19,321 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_973d774c-f522-4607-b146-f2545de41032/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2024-11-23 23:36:19,512 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_973d774c-f522-4607-b146-f2545de41032/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 23:36:19,512 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr77REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 522 more)] === [2024-11-23 23:36:19,513 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:36:19,513 INFO L85 PathProgramCache]: Analyzing trace with hash -2089651902, now seen corresponding path program 1 times [2024-11-23 23:36:19,513 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-23 23:36:19,513 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1885252483] [2024-11-23 23:36:19,513 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:36:19,513 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 23:36:19,514 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_973d774c-f522-4607-b146-f2545de41032/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 23:36:19,515 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_973d774c-f522-4607-b146-f2545de41032/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 23:36:19,517 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_973d774c-f522-4607-b146-f2545de41032/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2024-11-23 23:36:19,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:36:19,793 INFO L256 TraceCheckSpWp]: Trace formula consists of 306 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-11-23 23:36:19,795 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 23:36:19,807 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 [2024-11-23 23:36:19,831 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 [2024-11-23 23:36:19,848 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 [2024-11-23 23:36:19,906 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 [2024-11-23 23:36:19,931 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 23:36:19,931 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-23 23:36:19,931 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-23 23:36:19,931 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1885252483] [2024-11-23 23:36:19,931 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1885252483] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:36:19,931 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:36:19,931 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-23 23:36:19,931 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [278919109] [2024-11-23 23:36:19,932 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:36:19,932 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-23 23:36:19,932 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-23 23:36:19,932 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-23 23:36:19,932 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-23 23:36:19,933 INFO L87 Difference]: Start difference. First operand 960 states and 1017 transitions. Second operand has 5 states, 4 states have (on average 17.0) internal successors, (68), 5 states have internal predecessors, (68), 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) [2024-11-23 23:36:23,831 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:36:23,831 INFO L93 Difference]: Finished difference Result 959 states and 1016 transitions. [2024-11-23 23:36:23,832 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-23 23:36:23,832 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 17.0) internal successors, (68), 5 states have internal predecessors, (68), 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 68 [2024-11-23 23:36:23,832 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:36:23,836 INFO L225 Difference]: With dead ends: 959 [2024-11-23 23:36:23,836 INFO L226 Difference]: Without dead ends: 959 [2024-11-23 23:36:23,836 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 64 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-23 23:36:23,837 INFO L435 NwaCegarLoop]: 838 mSDtfsCounter, 1 mSDsluCounter, 1337 mSDsCounter, 0 mSdLazyCounter, 1181 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 2175 SdHoareTripleChecker+Invalid, 1182 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1181 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.8s IncrementalHoareTripleChecker+Time [2024-11-23 23:36:23,837 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 2175 Invalid, 1182 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1181 Invalid, 0 Unknown, 0 Unchecked, 3.8s Time] [2024-11-23 23:36:23,839 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 959 states. [2024-11-23 23:36:23,850 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 959 to 959. [2024-11-23 23:36:23,851 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 959 states, 634 states have (on average 1.5930599369085174) internal successors, (1010), 954 states have internal predecessors, (1010), 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) [2024-11-23 23:36:23,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 959 states to 959 states and 1016 transitions. [2024-11-23 23:36:23,854 INFO L78 Accepts]: Start accepts. Automaton has 959 states and 1016 transitions. Word has length 68 [2024-11-23 23:36:23,854 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:36:23,855 INFO L471 AbstractCegarLoop]: Abstraction has 959 states and 1016 transitions. [2024-11-23 23:36:23,855 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 17.0) internal successors, (68), 5 states have internal predecessors, (68), 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) [2024-11-23 23:36:23,855 INFO L276 IsEmpty]: Start isEmpty. Operand 959 states and 1016 transitions. [2024-11-23 23:36:23,856 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2024-11-23 23:36:23,856 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:36:23,856 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:36:23,873 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_973d774c-f522-4607-b146-f2545de41032/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Ended with exit code 0 [2024-11-23 23:36:24,057 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_973d774c-f522-4607-b146-f2545de41032/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 23:36:24,057 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr81REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 522 more)] === [2024-11-23 23:36:24,057 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:36:24,058 INFO L85 PathProgramCache]: Analyzing trace with hash 185950089, now seen corresponding path program 1 times [2024-11-23 23:36:24,058 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-23 23:36:24,058 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1801690853] [2024-11-23 23:36:24,058 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:36:24,058 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 23:36:24,058 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_973d774c-f522-4607-b146-f2545de41032/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 23:36:24,063 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_973d774c-f522-4607-b146-f2545de41032/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 23:36:24,066 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_973d774c-f522-4607-b146-f2545de41032/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2024-11-23 23:36:24,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:36:24,404 INFO L256 TraceCheckSpWp]: Trace formula consists of 332 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-23 23:36:24,406 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 23:36:24,437 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 23:36:24,437 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-23 23:36:24,437 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-23 23:36:24,437 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1801690853] [2024-11-23 23:36:24,438 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1801690853] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-23 23:36:24,438 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-23 23:36:24,438 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-23 23:36:24,438 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [465447985] [2024-11-23 23:36:24,438 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-23 23:36:24,439 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-23 23:36:24,439 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-23 23:36:24,440 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-23 23:36:24,440 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-23 23:36:24,441 INFO L87 Difference]: Start difference. First operand 959 states and 1016 transitions. Second operand has 4 states, 4 states have (on average 18.5) internal successors, (74), 4 states have internal predecessors, (74), 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) [2024-11-23 23:36:24,502 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:36:24,505 INFO L93 Difference]: Finished difference Result 962 states and 1020 transitions. [2024-11-23 23:36:24,507 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-23 23:36:24,508 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 18.5) internal successors, (74), 4 states have internal predecessors, (74), 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 76 [2024-11-23 23:36:24,508 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:36:24,515 INFO L225 Difference]: With dead ends: 962 [2024-11-23 23:36:24,519 INFO L226 Difference]: Without dead ends: 962 [2024-11-23 23:36:24,519 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 73 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-23 23:36:24,521 INFO L435 NwaCegarLoop]: 838 mSDtfsCounter, 0 mSDsluCounter, 1671 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 2509 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 [2024-11-23 23:36:24,521 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 2509 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-23 23:36:24,524 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 962 states. [2024-11-23 23:36:24,543 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 962 to 962. [2024-11-23 23:36:24,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 962 states, 636 states have (on average 1.5927672955974843) internal successors, (1013), 957 states have internal predecessors, (1013), 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) [2024-11-23 23:36:24,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 962 states to 962 states and 1020 transitions. [2024-11-23 23:36:24,548 INFO L78 Accepts]: Start accepts. Automaton has 962 states and 1020 transitions. Word has length 76 [2024-11-23 23:36:24,548 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:36:24,549 INFO L471 AbstractCegarLoop]: Abstraction has 962 states and 1020 transitions. [2024-11-23 23:36:24,553 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.5) internal successors, (74), 4 states have internal predecessors, (74), 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) [2024-11-23 23:36:24,553 INFO L276 IsEmpty]: Start isEmpty. Operand 962 states and 1020 transitions. [2024-11-23 23:36:24,553 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2024-11-23 23:36:24,554 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:36:24,554 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:36:24,573 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_973d774c-f522-4607-b146-f2545de41032/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Ended with exit code 0 [2024-11-23 23:36:24,754 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_973d774c-f522-4607-b146-f2545de41032/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 23:36:24,754 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr81REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 522 more)] === [2024-11-23 23:36:24,755 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:36:24,755 INFO L85 PathProgramCache]: Analyzing trace with hash -1863025934, now seen corresponding path program 1 times [2024-11-23 23:36:24,755 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-23 23:36:24,756 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1156932769] [2024-11-23 23:36:24,756 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:36:24,756 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 23:36:24,756 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_973d774c-f522-4607-b146-f2545de41032/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 23:36:24,758 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_973d774c-f522-4607-b146-f2545de41032/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 23:36:24,760 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_973d774c-f522-4607-b146-f2545de41032/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2024-11-23 23:36:25,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:36:25,080 INFO L256 TraceCheckSpWp]: Trace formula consists of 343 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-23 23:36:25,082 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 23:36:25,121 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 23:36:25,121 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-23 23:36:25,230 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 23:36:25,230 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-23 23:36:25,230 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1156932769] [2024-11-23 23:36:25,230 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1156932769] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-23 23:36:25,230 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-23 23:36:25,231 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2024-11-23 23:36:25,231 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1060464] [2024-11-23 23:36:25,231 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-23 23:36:25,231 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-23 23:36:25,231 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-23 23:36:25,232 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-23 23:36:25,232 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2024-11-23 23:36:25,232 INFO L87 Difference]: Start difference. First operand 962 states and 1020 transitions. Second operand has 8 states, 8 states have (on average 9.875) internal successors, (79), 8 states have internal predecessors, (79), 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) [2024-11-23 23:36:25,455 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:36:25,456 INFO L93 Difference]: Finished difference Result 974 states and 1037 transitions. [2024-11-23 23:36:25,457 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-23 23:36:25,457 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 9.875) internal successors, (79), 8 states have internal predecessors, (79), 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 77 [2024-11-23 23:36:25,457 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:36:25,460 INFO L225 Difference]: With dead ends: 974 [2024-11-23 23:36:25,460 INFO L226 Difference]: Without dead ends: 974 [2024-11-23 23:36:25,460 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 155 GetRequests, 146 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=44, Invalid=66, Unknown=0, NotChecked=0, Total=110 [2024-11-23 23:36:25,463 INFO L435 NwaCegarLoop]: 838 mSDtfsCounter, 5 mSDsluCounter, 4171 mSDsCounter, 0 mSdLazyCounter, 59 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 5009 SdHoareTripleChecker+Invalid, 64 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 59 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-23 23:36:25,463 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 5009 Invalid, 64 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 59 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-23 23:36:25,465 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 974 states. [2024-11-23 23:36:25,476 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 974 to 972. [2024-11-23 23:36:25,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 972 states, 645 states have (on average 1.5937984496124031) internal successors, (1028), 966 states have internal predecessors, (1028), 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) [2024-11-23 23:36:25,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 972 states to 972 states and 1035 transitions. [2024-11-23 23:36:25,484 INFO L78 Accepts]: Start accepts. Automaton has 972 states and 1035 transitions. Word has length 77 [2024-11-23 23:36:25,484 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:36:25,484 INFO L471 AbstractCegarLoop]: Abstraction has 972 states and 1035 transitions. [2024-11-23 23:36:25,484 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.875) internal successors, (79), 8 states have internal predecessors, (79), 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) [2024-11-23 23:36:25,484 INFO L276 IsEmpty]: Start isEmpty. Operand 972 states and 1035 transitions. [2024-11-23 23:36:25,485 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2024-11-23 23:36:25,485 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:36:25,485 INFO L218 NwaCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:36:25,499 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_973d774c-f522-4607-b146-f2545de41032/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Ended with exit code 0 [2024-11-23 23:36:25,685 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_973d774c-f522-4607-b146-f2545de41032/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 23:36:25,685 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr81REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 522 more)] === [2024-11-23 23:36:25,686 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:36:25,686 INFO L85 PathProgramCache]: Analyzing trace with hash 397767113, now seen corresponding path program 2 times [2024-11-23 23:36:25,686 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-23 23:36:25,686 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1881893243] [2024-11-23 23:36:25,686 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-23 23:36:25,687 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 23:36:25,687 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_973d774c-f522-4607-b146-f2545de41032/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 23:36:25,688 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_973d774c-f522-4607-b146-f2545de41032/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 23:36:25,692 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_973d774c-f522-4607-b146-f2545de41032/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2024-11-23 23:36:56,083 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-23 23:36:56,083 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-23 23:36:56,103 INFO L256 TraceCheckSpWp]: Trace formula consists of 376 conjuncts, 28 conjuncts are in the unsatisfiable core [2024-11-23 23:36:56,108 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 23:36:56,252 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2024-11-23 23:36:56,252 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 [2024-11-23 23:36:56,260 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 [2024-11-23 23:36:56,308 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 [2024-11-23 23:36:56,326 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 [2024-11-23 23:36:56,480 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 [2024-11-23 23:36:56,488 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 [2024-11-23 23:36:56,727 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-23 23:36:56,727 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 [2024-11-23 23:36:56,737 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 [2024-11-23 23:36:56,815 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 [2024-11-23 23:36:56,825 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 [2024-11-23 23:36:56,867 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-23 23:36:56,867 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-23 23:36:57,141 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse0 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (and (forall ((v_ArrVal_1270 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_1271 (Array (_ BitVec 32) (_ BitVec 32)))) (bvule (bvadd (_ bv20 32) (select (select (store |c_#memory_$Pointer$#2.offset| |c_ULTIMATE.start_main_#t~mem36#1.base| v_ArrVal_1271) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0)) (select |c_#length| (select (select (store |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_main_#t~mem36#1.base| v_ArrVal_1270) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0)))) (forall ((v_ArrVal_1271 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse1 (select (select (store |c_#memory_$Pointer$#2.offset| |c_ULTIMATE.start_main_#t~mem36#1.base| v_ArrVal_1271) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0))) (bvule (bvadd (_ bv16 32) .cse1) (bvadd (_ bv20 32) .cse1)))))) is different from false [2024-11-23 23:36:57,148 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-23 23:36:57,148 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1881893243] [2024-11-23 23:36:57,148 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1881893243] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 23:36:57,148 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1189739518] [2024-11-23 23:36:57,148 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-23 23:36:57,148 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-23 23:36:57,148 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_973d774c-f522-4607-b146-f2545de41032/bin/uautomizer-verify-LYvppIcaGC/cvc4 [2024-11-23 23:36:57,155 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_973d774c-f522-4607-b146-f2545de41032/bin/uautomizer-verify-LYvppIcaGC/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-23 23:36:57,157 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_973d774c-f522-4607-b146-f2545de41032/bin/uautomizer-verify-LYvppIcaGC/cvc4 --incremental --print-success --lang smt (26)] Waiting until timeout for monitored process [2024-11-23 23:36:58,998 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-23 23:36:58,998 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-23 23:36:59,036 INFO L256 TraceCheckSpWp]: Trace formula consists of 376 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-23 23:36:59,039 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 23:36:59,292 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 23:36:59,292 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-23 23:36:59,676 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 23:36:59,677 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1189739518] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-23 23:36:59,678 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-23 23:36:59,678 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 8] total 22 [2024-11-23 23:36:59,678 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [807802439] [2024-11-23 23:36:59,678 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-23 23:36:59,679 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2024-11-23 23:36:59,679 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-23 23:36:59,679 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2024-11-23 23:36:59,680 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=467, Unknown=1, NotChecked=44, Total=600 [2024-11-23 23:36:59,680 INFO L87 Difference]: Start difference. First operand 972 states and 1035 transitions. Second operand has 22 states, 21 states have (on average 6.857142857142857) internal successors, (144), 22 states have internal predecessors, (144), 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) [2024-11-23 23:37:16,609 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:37:16,609 INFO L93 Difference]: Finished difference Result 992 states and 1059 transitions. [2024-11-23 23:37:16,609 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2024-11-23 23:37:16,610 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 21 states have (on average 6.857142857142857) internal successors, (144), 22 states have internal predecessors, (144), 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 80 [2024-11-23 23:37:16,610 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:37:16,612 INFO L225 Difference]: With dead ends: 992 [2024-11-23 23:37:16,612 INFO L226 Difference]: Without dead ends: 982 [2024-11-23 23:37:16,616 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 267 GetRequests, 220 SyntacticMatches, 1 SemanticMatches, 46 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 332 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=320, Invalid=1845, Unknown=1, NotChecked=90, Total=2256 [2024-11-23 23:37:16,616 INFO L435 NwaCegarLoop]: 561 mSDtfsCounter, 624 mSDsluCounter, 8432 mSDsCounter, 0 mSdLazyCounter, 6593 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 627 SdHoareTripleChecker+Valid, 8993 SdHoareTripleChecker+Invalid, 6612 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 6593 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 15.5s IncrementalHoareTripleChecker+Time [2024-11-23 23:37:16,616 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [627 Valid, 8993 Invalid, 6612 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [19 Valid, 6593 Invalid, 0 Unknown, 0 Unchecked, 15.5s Time] [2024-11-23 23:37:16,618 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 982 states. [2024-11-23 23:37:16,642 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 982 to 980. [2024-11-23 23:37:16,647 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 980 states, 654 states have (on average 1.5825688073394495) internal successors, (1035), 974 states have internal predecessors, (1035), 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) [2024-11-23 23:37:16,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 980 states to 980 states and 1042 transitions. [2024-11-23 23:37:16,649 INFO L78 Accepts]: Start accepts. Automaton has 980 states and 1042 transitions. Word has length 80 [2024-11-23 23:37:16,649 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:37:16,649 INFO L471 AbstractCegarLoop]: Abstraction has 980 states and 1042 transitions. [2024-11-23 23:37:16,649 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 21 states have (on average 6.857142857142857) internal successors, (144), 22 states have internal predecessors, (144), 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) [2024-11-23 23:37:16,650 INFO L276 IsEmpty]: Start isEmpty. Operand 980 states and 1042 transitions. [2024-11-23 23:37:16,650 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2024-11-23 23:37:16,650 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:37:16,650 INFO L218 NwaCegarLoop]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:37:16,667 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_973d774c-f522-4607-b146-f2545de41032/bin/uautomizer-verify-LYvppIcaGC/cvc4 --incremental --print-success --lang smt (26)] Ended with exit code 0 [2024-11-23 23:37:16,882 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_973d774c-f522-4607-b146-f2545de41032/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Ended with exit code 0 [2024-11-23 23:37:17,053 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_973d774c-f522-4607-b146-f2545de41032/bin/uautomizer-verify-LYvppIcaGC/cvc4 --incremental --print-success --lang smt,25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_973d774c-f522-4607-b146-f2545de41032/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 23:37:17,053 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr80REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 522 more)] === [2024-11-23 23:37:17,054 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:37:17,054 INFO L85 PathProgramCache]: Analyzing trace with hash -1439256280, now seen corresponding path program 1 times [2024-11-23 23:37:17,054 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-23 23:37:17,054 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1570849023] [2024-11-23 23:37:17,054 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:37:17,054 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 23:37:17,055 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_973d774c-f522-4607-b146-f2545de41032/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 23:37:17,056 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_973d774c-f522-4607-b146-f2545de41032/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 23:37:17,058 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_973d774c-f522-4607-b146-f2545de41032/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2024-11-23 23:37:17,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:37:17,463 INFO L256 TraceCheckSpWp]: Trace formula consists of 442 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-23 23:37:17,465 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 23:37:17,704 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 23:37:17,704 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-23 23:37:18,540 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 23:37:18,540 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-23 23:37:18,540 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1570849023] [2024-11-23 23:37:18,540 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1570849023] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-23 23:37:18,540 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-23 23:37:18,540 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 26 [2024-11-23 23:37:18,540 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [639240978] [2024-11-23 23:37:18,540 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-23 23:37:18,541 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2024-11-23 23:37:18,541 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-23 23:37:18,542 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2024-11-23 23:37:18,542 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=193, Invalid=457, Unknown=0, NotChecked=0, Total=650 [2024-11-23 23:37:18,543 INFO L87 Difference]: Start difference. First operand 980 states and 1042 transitions. Second operand has 26 states, 26 states have (on average 3.730769230769231) internal successors, (97), 26 states have internal predecessors, (97), 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) [2024-11-23 23:37:21,048 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:37:21,049 INFO L93 Difference]: Finished difference Result 1004 states and 1081 transitions. [2024-11-23 23:37:21,049 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2024-11-23 23:37:21,049 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 3.730769230769231) internal successors, (97), 26 states have internal predecessors, (97), 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 86 [2024-11-23 23:37:21,050 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:37:21,052 INFO L225 Difference]: With dead ends: 1004 [2024-11-23 23:37:21,052 INFO L226 Difference]: Without dead ends: 998 [2024-11-23 23:37:21,053 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 191 GetRequests, 146 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 100 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=728, Invalid=1434, Unknown=0, NotChecked=0, Total=2162 [2024-11-23 23:37:21,053 INFO L435 NwaCegarLoop]: 837 mSDtfsCounter, 19 mSDsluCounter, 10839 mSDsCounter, 0 mSdLazyCounter, 530 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 11676 SdHoareTripleChecker+Invalid, 545 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 530 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-11-23 23:37:21,054 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 11676 Invalid, 545 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 530 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-11-23 23:37:21,055 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 998 states. [2024-11-23 23:37:21,066 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 998 to 998. [2024-11-23 23:37:21,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 998 states, 672 states have (on average 1.5744047619047619) internal successors, (1058), 992 states have internal predecessors, (1058), 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) [2024-11-23 23:37:21,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 998 states to 998 states and 1065 transitions. [2024-11-23 23:37:21,069 INFO L78 Accepts]: Start accepts. Automaton has 998 states and 1065 transitions. Word has length 86 [2024-11-23 23:37:21,069 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:37:21,070 INFO L471 AbstractCegarLoop]: Abstraction has 998 states and 1065 transitions. [2024-11-23 23:37:21,070 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 3.730769230769231) internal successors, (97), 26 states have internal predecessors, (97), 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) [2024-11-23 23:37:21,070 INFO L276 IsEmpty]: Start isEmpty. Operand 998 states and 1065 transitions. [2024-11-23 23:37:21,071 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2024-11-23 23:37:21,071 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:37:21,071 INFO L218 NwaCegarLoop]: trace histogram [22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:37:21,093 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_973d774c-f522-4607-b146-f2545de41032/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Ended with exit code 0 [2024-11-23 23:37:21,272 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_973d774c-f522-4607-b146-f2545de41032/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 23:37:21,272 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr80REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 522 more)] === [2024-11-23 23:37:21,272 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:37:21,273 INFO L85 PathProgramCache]: Analyzing trace with hash -1616898072, now seen corresponding path program 2 times [2024-11-23 23:37:21,273 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-23 23:37:21,273 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1802316523] [2024-11-23 23:37:21,273 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-23 23:37:21,273 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 23:37:21,273 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_973d774c-f522-4607-b146-f2545de41032/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 23:37:21,275 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_973d774c-f522-4607-b146-f2545de41032/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 23:37:21,276 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_973d774c-f522-4607-b146-f2545de41032/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2024-11-23 23:38:16,497 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-23 23:38:16,498 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-23 23:38:16,527 INFO L256 TraceCheckSpWp]: Trace formula consists of 574 conjuncts, 34 conjuncts are in the unsatisfiable core [2024-11-23 23:38:16,532 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 23:38:16,661 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2024-11-23 23:38:16,661 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 [2024-11-23 23:38:16,681 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 [2024-11-23 23:38:17,199 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-23 23:38:17,199 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 [2024-11-23 23:38:17,265 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 [2024-11-23 23:38:17,298 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 231 trivial. 0 not checked. [2024-11-23 23:38:17,298 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-23 23:38:17,550 INFO L349 Elim1Store]: treesize reduction 7, result has 63.2 percent of original size [2024-11-23 23:38:17,551 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 [2024-11-23 23:38:17,615 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-23 23:38:17,615 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1802316523] [2024-11-23 23:38:17,615 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1802316523] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 23:38:17,615 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [853952367] [2024-11-23 23:38:17,615 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-23 23:38:17,615 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-23 23:38:17,616 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_973d774c-f522-4607-b146-f2545de41032/bin/uautomizer-verify-LYvppIcaGC/cvc4 [2024-11-23 23:38:17,618 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_973d774c-f522-4607-b146-f2545de41032/bin/uautomizer-verify-LYvppIcaGC/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-23 23:38:17,619 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_973d774c-f522-4607-b146-f2545de41032/bin/uautomizer-verify-LYvppIcaGC/cvc4 --incremental --print-success --lang smt (29)] Waiting until timeout for monitored process [2024-11-23 23:38:19,864 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-23 23:38:19,864 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-23 23:38:19,915 INFO L256 TraceCheckSpWp]: Trace formula consists of 574 conjuncts, 25 conjuncts are in the unsatisfiable core [2024-11-23 23:38:19,919 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 23:38:21,172 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 23:38:21,172 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-23 23:38:24,248 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-23 23:38:24,248 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [853952367] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-23 23:38:24,249 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-23 23:38:24,249 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 26, 26] total 60 [2024-11-23 23:38:24,249 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [842827302] [2024-11-23 23:38:24,249 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-23 23:38:24,250 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 60 states [2024-11-23 23:38:24,250 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-23 23:38:24,251 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 60 interpolants. [2024-11-23 23:38:24,252 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=702, Invalid=3074, Unknown=6, NotChecked=0, Total=3782 [2024-11-23 23:38:24,253 INFO L87 Difference]: Start difference. First operand 998 states and 1065 transitions. Second operand has 60 states, 59 states have (on average 3.0508474576271185) internal successors, (180), 59 states have internal predecessors, (180), 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) [2024-11-23 23:39:02,649 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:39:02,649 INFO L93 Difference]: Finished difference Result 1039 states and 1138 transitions. [2024-11-23 23:39:02,650 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 85 states. [2024-11-23 23:39:02,650 INFO L78 Accepts]: Start accepts. Automaton has has 60 states, 59 states have (on average 3.0508474576271185) internal successors, (180), 59 states have internal predecessors, (180), 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 98 [2024-11-23 23:39:02,650 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:39:02,652 INFO L225 Difference]: With dead ends: 1039 [2024-11-23 23:39:02,652 INFO L226 Difference]: Without dead ends: 1035 [2024-11-23 23:39:02,654 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 375 GetRequests, 236 SyntacticMatches, 0 SemanticMatches, 139 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3606 ImplicationChecksByTransitivity, 13.7s TimeCoverageRelationStatistics Valid=3766, Invalid=15966, Unknown=8, NotChecked=0, Total=19740 [2024-11-23 23:39:02,655 INFO L435 NwaCegarLoop]: 561 mSDtfsCounter, 649 mSDsluCounter, 16821 mSDsCounter, 0 mSdLazyCounter, 11985 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 25.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 653 SdHoareTripleChecker+Valid, 17382 SdHoareTripleChecker+Invalid, 12035 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 11985 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 28.3s IncrementalHoareTripleChecker+Time [2024-11-23 23:39:02,655 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [653 Valid, 17382 Invalid, 12035 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [50 Valid, 11985 Invalid, 0 Unknown, 0 Unchecked, 28.3s Time] [2024-11-23 23:39:02,657 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1035 states. [2024-11-23 23:39:02,667 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1035 to 1031. [2024-11-23 23:39:02,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1031 states, 706 states have (on average 1.5623229461756374) internal successors, (1103), 1025 states have internal predecessors, (1103), 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) [2024-11-23 23:39:02,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1031 states to 1031 states and 1110 transitions. [2024-11-23 23:39:02,669 INFO L78 Accepts]: Start accepts. Automaton has 1031 states and 1110 transitions. Word has length 98 [2024-11-23 23:39:02,670 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:39:02,670 INFO L471 AbstractCegarLoop]: Abstraction has 1031 states and 1110 transitions. [2024-11-23 23:39:02,670 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 60 states, 59 states have (on average 3.0508474576271185) internal successors, (180), 59 states have internal predecessors, (180), 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) [2024-11-23 23:39:02,670 INFO L276 IsEmpty]: Start isEmpty. Operand 1031 states and 1110 transitions. [2024-11-23 23:39:02,671 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2024-11-23 23:39:02,671 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:39:02,671 INFO L218 NwaCegarLoop]: trace histogram [44, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:39:02,708 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_973d774c-f522-4607-b146-f2545de41032/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Ended with exit code 0 [2024-11-23 23:39:02,883 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_973d774c-f522-4607-b146-f2545de41032/bin/uautomizer-verify-LYvppIcaGC/cvc4 --incremental --print-success --lang smt (29)] Ended with exit code 0 [2024-11-23 23:39:03,072 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_973d774c-f522-4607-b146-f2545de41032/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,29 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_973d774c-f522-4607-b146-f2545de41032/bin/uautomizer-verify-LYvppIcaGC/cvc4 --incremental --print-success --lang smt [2024-11-23 23:39:03,072 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr84REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 522 more)] === [2024-11-23 23:39:03,073 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:39:03,073 INFO L85 PathProgramCache]: Analyzing trace with hash 1731614654, now seen corresponding path program 1 times [2024-11-23 23:39:03,073 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-23 23:39:03,073 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [370697888] [2024-11-23 23:39:03,074 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:39:03,074 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 23:39:03,074 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_973d774c-f522-4607-b146-f2545de41032/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 23:39:03,075 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_973d774c-f522-4607-b146-f2545de41032/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 23:39:03,076 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_973d774c-f522-4607-b146-f2545de41032/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2024-11-23 23:39:03,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:39:03,659 INFO L256 TraceCheckSpWp]: Trace formula consists of 836 conjuncts, 58 conjuncts are in the unsatisfiable core [2024-11-23 23:39:03,669 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 23:39:03,673 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 [2024-11-23 23:39:03,878 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2024-11-23 23:39:03,878 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 [2024-11-23 23:39:03,898 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 [2024-11-23 23:39:04,390 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-23 23:39:04,390 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 [2024-11-23 23:39:04,458 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-23 23:39:04,458 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 [2024-11-23 23:39:04,511 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 [2024-11-23 23:39:04,536 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 946 trivial. 0 not checked. [2024-11-23 23:39:04,536 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-23 23:39:04,598 INFO L349 Elim1Store]: treesize reduction 7, result has 63.2 percent of original size [2024-11-23 23:39:04,598 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 [2024-11-23 23:39:04,606 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_2508 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_ULTIMATE.start_main_#t~mem38#1.base| (select (select (store |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_main_#t~mem38#1.base| v_ArrVal_2508) |c_ULTIMATE.start_main_~user~0#1.base|) (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|)))) is different from false [2024-11-23 23:39:04,617 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_2508 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (let ((.cse0 (select (select |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (= .cse0 (select (select (store |c_#memory_$Pointer$#2.base| .cse0 v_ArrVal_2508) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))))) is different from false [2024-11-23 23:39:05,139 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_2508 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_2554 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse1 (store |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_main_#t~mem36#1.base| v_ArrVal_2554)) (.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_2508) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))))) is different from false [2024-11-23 23:39:05,142 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-23 23:39:05,142 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [370697888] [2024-11-23 23:39:05,142 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [370697888] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 23:39:05,142 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [839685799] [2024-11-23 23:39:05,142 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:39:05,142 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-23 23:39:05,143 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_973d774c-f522-4607-b146-f2545de41032/bin/uautomizer-verify-LYvppIcaGC/cvc4 [2024-11-23 23:39:05,144 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_973d774c-f522-4607-b146-f2545de41032/bin/uautomizer-verify-LYvppIcaGC/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-23 23:39:05,146 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_973d774c-f522-4607-b146-f2545de41032/bin/uautomizer-verify-LYvppIcaGC/cvc4 --incremental --print-success --lang smt (31)] Waiting until timeout for monitored process [2024-11-23 23:39:08,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:39:08,949 INFO L256 TraceCheckSpWp]: Trace formula consists of 836 conjuncts, 62 conjuncts are in the unsatisfiable core [2024-11-23 23:39:08,958 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 23:39:08,963 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 [2024-11-23 23:39:09,152 INFO L349 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2024-11-23 23:39:09,152 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 19 treesize of output 27 [2024-11-23 23:39:09,200 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 [2024-11-23 23:39:09,357 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 12 [2024-11-23 23:39:10,535 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-23 23:39:10,535 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 [2024-11-23 23:39:10,690 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-23 23:39:10,690 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 [2024-11-23 23:39:10,727 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 [2024-11-23 23:39:10,803 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 946 trivial. 0 not checked. [2024-11-23 23:39:10,803 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-23 23:39:10,939 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_2977 (Array (_ BitVec 32) (_ BitVec 32)))) (= (bvadd (_ bv1 1) (select |c_#valid| (let ((.cse0 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (store |c_#memory_$Pointer$#2.base| (select (select |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse0) v_ArrVal_2977) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0)))) (_ bv0 1))) is different from false [2024-11-23 23:39:11,385 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_3023 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_2977 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (_ bv1 1) (select |c_#valid| (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (let ((.cse0 (store |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_main_#t~mem36#1.base| v_ArrVal_3023))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_2977)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))))) is different from false [2024-11-23 23:39:11,392 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [839685799] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 23:39:11,392 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-23 23:39:11,392 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9] total 17 [2024-11-23 23:39:11,392 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [940073282] [2024-11-23 23:39:11,392 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-23 23:39:11,393 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-23 23:39:11,393 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-23 23:39:11,393 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-23 23:39:11,393 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=304, Unknown=20, NotChecked=200, Total=600 [2024-11-23 23:39:11,394 INFO L87 Difference]: Start difference. First operand 1031 states and 1110 transitions. Second operand has 18 states, 15 states have (on average 6.466666666666667) internal successors, (97), 18 states have internal predecessors, (97), 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) [2024-11-23 23:39:18,808 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:39:18,808 INFO L93 Difference]: Finished difference Result 1032 states and 1111 transitions. [2024-11-23 23:39:18,808 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-23 23:39:18,809 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 15 states have (on average 6.466666666666667) internal successors, (97), 18 states have internal predecessors, (97), 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 123 [2024-11-23 23:39:18,809 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:39:18,811 INFO L225 Difference]: With dead ends: 1032 [2024-11-23 23:39:18,811 INFO L226 Difference]: Without dead ends: 1032 [2024-11-23 23:39:18,812 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 259 GetRequests, 234 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 5 IntricatePredicates, 0 DeprecatedPredicates, 79 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=85, Invalid=335, Unknown=20, NotChecked=210, Total=650 [2024-11-23 23:39:18,812 INFO L435 NwaCegarLoop]: 562 mSDtfsCounter, 544 mSDsluCounter, 3511 mSDsCounter, 0 mSdLazyCounter, 2895 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 547 SdHoareTripleChecker+Valid, 4073 SdHoareTripleChecker+Invalid, 2904 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 2895 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.3s IncrementalHoareTripleChecker+Time [2024-11-23 23:39:18,813 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [547 Valid, 4073 Invalid, 2904 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 2895 Invalid, 0 Unknown, 0 Unchecked, 7.3s Time] [2024-11-23 23:39:18,814 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1032 states. [2024-11-23 23:39:18,824 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1032 to 1030. [2024-11-23 23:39:18,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1030 states, 706 states have (on average 1.5609065155807365) internal successors, (1102), 1024 states have internal predecessors, (1102), 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) [2024-11-23 23:39:18,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1030 states to 1030 states and 1109 transitions. [2024-11-23 23:39:18,827 INFO L78 Accepts]: Start accepts. Automaton has 1030 states and 1109 transitions. Word has length 123 [2024-11-23 23:39:18,827 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:39:18,828 INFO L471 AbstractCegarLoop]: Abstraction has 1030 states and 1109 transitions. [2024-11-23 23:39:18,828 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 15 states have (on average 6.466666666666667) internal successors, (97), 18 states have internal predecessors, (97), 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) [2024-11-23 23:39:18,828 INFO L276 IsEmpty]: Start isEmpty. Operand 1030 states and 1109 transitions. [2024-11-23 23:39:18,829 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2024-11-23 23:39:18,829 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:39:18,829 INFO L218 NwaCegarLoop]: trace histogram [44, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:39:18,847 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_973d774c-f522-4607-b146-f2545de41032/bin/uautomizer-verify-LYvppIcaGC/cvc4 --incremental --print-success --lang smt (31)] Ended with exit code 0 [2024-11-23 23:39:19,044 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_973d774c-f522-4607-b146-f2545de41032/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Ended with exit code 0 [2024-11-23 23:39:19,230 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_973d774c-f522-4607-b146-f2545de41032/bin/uautomizer-verify-LYvppIcaGC/cvc4 --incremental --print-success --lang smt,30 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_973d774c-f522-4607-b146-f2545de41032/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 23:39:19,230 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr85REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 522 more)] === [2024-11-23 23:39:19,231 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:39:19,231 INFO L85 PathProgramCache]: Analyzing trace with hash 1731614655, now seen corresponding path program 1 times [2024-11-23 23:39:19,231 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-23 23:39:19,231 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1585788546] [2024-11-23 23:39:19,231 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:39:19,231 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 23:39:19,231 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_973d774c-f522-4607-b146-f2545de41032/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 23:39:19,233 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_973d774c-f522-4607-b146-f2545de41032/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 23:39:19,234 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_973d774c-f522-4607-b146-f2545de41032/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Waiting until timeout for monitored process [2024-11-23 23:39:19,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:39:19,868 INFO L256 TraceCheckSpWp]: Trace formula consists of 836 conjuncts, 111 conjuncts are in the unsatisfiable core [2024-11-23 23:39:19,881 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 23:39:19,885 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 [2024-11-23 23:39:20,068 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2024-11-23 23:39:20,068 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 [2024-11-23 23:39:20,077 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 [2024-11-23 23:39:20,107 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 [2024-11-23 23:39:20,124 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 [2024-11-23 23:39:20,235 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 [2024-11-23 23:39:20,241 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 [2024-11-23 23:39:21,309 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-23 23:39:21,309 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 [2024-11-23 23:39:21,328 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 [2024-11-23 23:39:21,499 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-23 23:39:21,499 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 [2024-11-23 23:39:21,513 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 [2024-11-23 23:39:21,555 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 [2024-11-23 23:39:21,563 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 [2024-11-23 23:39:21,605 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 946 trivial. 0 not checked. [2024-11-23 23:39:21,605 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-23 23:39:22,051 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$#2.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (and (forall ((v_ArrVal_3493 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (select (store |c_#memory_$Pointer$#2.offset| .cse1 v_ArrVal_3493) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (bvule (bvadd (_ bv4 32) .cse0) (bvadd (_ bv8 32) .cse0)))) (forall ((v_ArrVal_3493 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_3492 (Array (_ BitVec 32) (_ BitVec 32)))) (bvule (bvadd (_ bv8 32) (select (select (store |c_#memory_$Pointer$#2.offset| .cse1 v_ArrVal_3493) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2)) (select |c_#length| (select (select (store |c_#memory_$Pointer$#2.base| .cse1 v_ArrVal_3492) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))))))) is different from false [2024-11-23 23:39:23,709 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (and (forall ((v_ArrVal_3585 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_3584 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_3493 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_3492 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse2 (store |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_main_#t~mem36#1.base| v_ArrVal_3584))) (let ((.cse0 (select (select .cse2 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (bvule (bvadd (select (select (store (store |c_#memory_$Pointer$#2.offset| |c_ULTIMATE.start_main_#t~mem36#1.base| v_ArrVal_3585) .cse0 v_ArrVal_3493) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) (_ bv8 32)) (select |c_#length| (select (select (store .cse2 .cse0 v_ArrVal_3492) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))))) (forall ((v_ArrVal_3585 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_3584 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_3493 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse3 (select (select (store (store |c_#memory_$Pointer$#2.offset| |c_ULTIMATE.start_main_#t~mem36#1.base| v_ArrVal_3585) (select (select (store |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_main_#t~mem36#1.base| v_ArrVal_3584) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_3493) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (bvule (bvadd .cse3 (_ bv4 32)) (bvadd .cse3 (_ bv8 32))))))) is different from false [2024-11-23 23:39:23,720 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-23 23:39:23,720 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1585788546] [2024-11-23 23:39:23,720 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1585788546] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 23:39:23,720 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [573097109] [2024-11-23 23:39:23,720 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:39:23,721 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-23 23:39:23,721 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_973d774c-f522-4607-b146-f2545de41032/bin/uautomizer-verify-LYvppIcaGC/cvc4 [2024-11-23 23:39:23,725 INFO L229 MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_973d774c-f522-4607-b146-f2545de41032/bin/uautomizer-verify-LYvppIcaGC/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-23 23:39:23,727 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_973d774c-f522-4607-b146-f2545de41032/bin/uautomizer-verify-LYvppIcaGC/cvc4 --incremental --print-success --lang smt (33)] Waiting until timeout for monitored process [2024-11-23 23:39:27,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:39:27,729 INFO L256 TraceCheckSpWp]: Trace formula consists of 836 conjuncts, 74 conjuncts are in the unsatisfiable core [2024-11-23 23:39:27,738 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 23:39:27,743 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 [2024-11-23 23:39:27,752 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 [2024-11-23 23:39:28,424 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2024-11-23 23:39:28,424 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 [2024-11-23 23:39:28,435 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 12 treesize of output 14 [2024-11-23 23:39:28,547 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 11 treesize of output 7 [2024-11-23 23:39:28,558 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 15 treesize of output 1 [2024-11-23 23:39:28,699 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 17 treesize of output 9 [2024-11-23 23:39:28,778 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 7 treesize of output 3 [2024-11-23 23:39:29,685 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-23 23:39:29,686 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 16 treesize of output 11 [2024-11-23 23:39:30,069 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 2 new quantified variables, introduced 0 case distinctions, treesize of input 48 treesize of output 34 [2024-11-23 23:39:30,089 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 27 treesize of output 22 [2024-11-23 23:39:30,369 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-23 23:39:30,369 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 39 treesize of output 22 [2024-11-23 23:39:30,377 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-23 23:39:30,377 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 15 treesize of output 7 [2024-11-23 23:39:30,495 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 946 trivial. 0 not checked. [2024-11-23 23:39:30,495 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-23 23:39:30,898 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 239 treesize of output 167 [2024-11-23 23:40:12,052 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [573097109] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 23:40:12,052 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-23 23:40:12,052 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 11] total 19 [2024-11-23 23:40:12,052 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [294339006] [2024-11-23 23:40:12,053 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-23 23:40:12,053 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-11-23 23:40:12,053 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-23 23:40:12,054 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-11-23 23:40:12,054 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=558, Unknown=17, NotChecked=98, Total=756 [2024-11-23 23:40:12,054 INFO L87 Difference]: Start difference. First operand 1030 states and 1109 transitions. Second operand has 20 states, 17 states have (on average 8.941176470588236) internal successors, (152), 20 states have internal predecessors, (152), 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) [2024-11-23 23:41:44,852 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:41:44,852 INFO L93 Difference]: Finished difference Result 1233 states and 1329 transitions. [2024-11-23 23:41:44,853 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-23 23:41:44,853 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 17 states have (on average 8.941176470588236) internal successors, (152), 20 states have internal predecessors, (152), 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 123 [2024-11-23 23:41:44,853 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:41:44,855 INFO L225 Difference]: With dead ends: 1233 [2024-11-23 23:41:44,855 INFO L226 Difference]: Without dead ends: 1233 [2024-11-23 23:41:44,856 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 266 GetRequests, 230 SyntacticMatches, 2 SemanticMatches, 34 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 225 ImplicationChecksByTransitivity, 45.4s TimeCoverageRelationStatistics Valid=166, Invalid=947, Unknown=17, NotChecked=130, Total=1260 [2024-11-23 23:41:44,856 INFO L435 NwaCegarLoop]: 459 mSDtfsCounter, 1225 mSDsluCounter, 4534 mSDsCounter, 0 mSdLazyCounter, 7168 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 86.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1227 SdHoareTripleChecker+Valid, 4993 SdHoareTripleChecker+Invalid, 7186 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 7168 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 89.0s IncrementalHoareTripleChecker+Time [2024-11-23 23:41:44,856 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1227 Valid, 4993 Invalid, 7186 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [18 Valid, 7168 Invalid, 0 Unknown, 0 Unchecked, 89.0s Time] [2024-11-23 23:41:44,858 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1233 states. [2024-11-23 23:41:44,868 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1233 to 1029. [2024-11-23 23:41:44,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1029 states, 706 states have (on average 1.5594900849858357) internal successors, (1101), 1023 states have internal predecessors, (1101), 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) [2024-11-23 23:41:44,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1029 states to 1029 states and 1108 transitions. [2024-11-23 23:41:44,871 INFO L78 Accepts]: Start accepts. Automaton has 1029 states and 1108 transitions. Word has length 123 [2024-11-23 23:41:44,872 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:41:44,872 INFO L471 AbstractCegarLoop]: Abstraction has 1029 states and 1108 transitions. [2024-11-23 23:41:44,872 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 17 states have (on average 8.941176470588236) internal successors, (152), 20 states have internal predecessors, (152), 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) [2024-11-23 23:41:44,872 INFO L276 IsEmpty]: Start isEmpty. Operand 1029 states and 1108 transitions. [2024-11-23 23:41:44,873 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2024-11-23 23:41:44,873 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:41:44,874 INFO L218 NwaCegarLoop]: trace histogram [44, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:41:44,894 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_973d774c-f522-4607-b146-f2545de41032/bin/uautomizer-verify-LYvppIcaGC/cvc4 --incremental --print-success --lang smt (33)] Ended with exit code 0 [2024-11-23 23:41:45,090 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_973d774c-f522-4607-b146-f2545de41032/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Ended with exit code 0 [2024-11-23 23:41:45,274 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_973d774c-f522-4607-b146-f2545de41032/bin/uautomizer-verify-LYvppIcaGC/cvc4 --incremental --print-success --lang smt,32 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_973d774c-f522-4607-b146-f2545de41032/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 23:41:45,274 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr88REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 522 more)] === [2024-11-23 23:41:45,275 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:41:45,275 INFO L85 PathProgramCache]: Analyzing trace with hash -319707217, now seen corresponding path program 1 times [2024-11-23 23:41:45,275 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-23 23:41:45,276 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [583873370] [2024-11-23 23:41:45,276 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:41:45,276 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 23:41:45,276 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_973d774c-f522-4607-b146-f2545de41032/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 23:41:45,278 INFO L229 MonitoredProcess]: Starting monitored process 34 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_973d774c-f522-4607-b146-f2545de41032/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 23:41:45,279 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_973d774c-f522-4607-b146-f2545de41032/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Waiting until timeout for monitored process [2024-11-23 23:41:45,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:41:45,968 INFO L256 TraceCheckSpWp]: Trace formula consists of 865 conjuncts, 59 conjuncts are in the unsatisfiable core [2024-11-23 23:41:45,976 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 23:41:47,281 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2024-11-23 23:41:47,281 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 [2024-11-23 23:41:47,396 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 [2024-11-23 23:41:49,846 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-23 23:41:49,847 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 [2024-11-23 23:41:50,265 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-23 23:41:50,265 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 [2024-11-23 23:41:51,034 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-23 23:41:51,034 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 [2024-11-23 23:41:51,154 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 [2024-11-23 23:41:51,410 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 946 trivial. 0 not checked. [2024-11-23 23:41:51,411 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-23 23:41:51,831 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_4495 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (_ bv1 1) (select |c_#valid| (select (select (store |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_main_#t~mem39#1.base| v_ArrVal_4495) |c_ULTIMATE.start_main_~user~0#1.base|) (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|)))))) is different from false [2024-11-23 23:41:51,906 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_4495 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (_ bv1 1) (select |c_#valid| (let ((.cse0 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (store |c_#memory_$Pointer$#2.base| (select (select |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse0) v_ArrVal_4495) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0)))))) is different from false [2024-11-23 23:41:52,090 INFO L349 Elim1Store]: treesize reduction 7, result has 77.4 percent of original size [2024-11-23 23:41:52,090 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 [2024-11-23 23:41:52,135 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_4494 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_4495 (Array (_ BitVec 32) (_ BitVec 32)))) (= |c_ULTIMATE.start_main_#t~mem38#1.base| (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (let ((.cse0 (store |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_main_#t~mem38#1.base| v_ArrVal_4494))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_4495)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))) is different from false [2024-11-23 23:41:52,213 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_4494 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_4495 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse2 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (let ((.cse0 (select (select |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (= .cse0 (select (select (let ((.cse1 (store |c_#memory_$Pointer$#2.base| .cse0 v_ArrVal_4494))) (store .cse1 (select (select .cse1 |c_ULTIMATE.start_main_~user~0#1.base|) .cse2) v_ArrVal_4495)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))))) is different from false [2024-11-23 23:41:53,749 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_4541 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_4494 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_4495 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse3 (store |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_main_#t~mem36#1.base| v_ArrVal_4541)) (.cse2 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (let ((.cse0 (select (select .cse3 |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (= .cse0 (select (select (let ((.cse1 (store .cse3 .cse0 v_ArrVal_4494))) (store .cse1 (select (select .cse1 |c_ULTIMATE.start_main_~user~0#1.base|) .cse2) v_ArrVal_4495)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))))) is different from false [2024-11-23 23:41:53,760 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-23 23:41:53,760 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [583873370] [2024-11-23 23:41:53,760 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [583873370] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 23:41:53,760 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1953622389] [2024-11-23 23:41:53,761 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:41:53,761 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-23 23:41:53,761 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_973d774c-f522-4607-b146-f2545de41032/bin/uautomizer-verify-LYvppIcaGC/cvc4 [2024-11-23 23:41:53,763 INFO L229 MonitoredProcess]: Starting monitored process 35 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_973d774c-f522-4607-b146-f2545de41032/bin/uautomizer-verify-LYvppIcaGC/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-23 23:41:53,776 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_973d774c-f522-4607-b146-f2545de41032/bin/uautomizer-verify-LYvppIcaGC/cvc4 --incremental --print-success --lang smt (35)] Waiting until timeout for monitored process [2024-11-23 23:42:19,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:42:19,233 INFO L256 TraceCheckSpWp]: Trace formula consists of 865 conjuncts, 64 conjuncts are in the unsatisfiable core [2024-11-23 23:42:19,241 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 23:42:19,277 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 [2024-11-23 23:42:20,732 INFO L349 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2024-11-23 23:42:20,732 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 19 treesize of output 27 [2024-11-23 23:42:21,076 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 [2024-11-23 23:42:22,187 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 12 [2024-11-23 23:42:28,333 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-23 23:42:28,333 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 44 treesize of output 43 [2024-11-23 23:42:29,317 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-23 23:42:29,318 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 [2024-11-23 23:42:30,051 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-23 23:42:30,051 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 44 treesize of output 43 [2024-11-23 23:42:30,210 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 [2024-11-23 23:42:30,656 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 946 trivial. 0 not checked. [2024-11-23 23:42:30,656 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-23 23:42:30,783 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_4980 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (_ bv1 1) (select |c_#valid| (select (select (store |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_main_#t~mem39#1.base| v_ArrVal_4980) |c_ULTIMATE.start_main_~user~0#1.base|) (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|)))))) is different from false [2024-11-23 23:42:30,846 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_4980 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (_ bv1 1) (select |c_#valid| (let ((.cse0 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (store |c_#memory_$Pointer$#2.base| (select (select |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse0) v_ArrVal_4980) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0)))))) is different from false [2024-11-23 23:42:30,937 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_4979 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_4980 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (_ bv1 1) (select |c_#valid| (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (let ((.cse0 (store |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_main_#t~mem38#1.base| v_ArrVal_4979))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_4980)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))))) is different from false [2024-11-23 23:42:30,996 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_4979 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_4980 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (select |c_#valid| (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (let ((.cse0 (store |c_#memory_$Pointer$#2.base| (select (select |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_4979))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_4980)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (_ bv1 1)))) is different from false [2024-11-23 23:42:32,674 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_4979 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_5026 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_4980 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (_ bv1 1) (select |c_#valid| (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (let ((.cse0 (let ((.cse2 (store |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_main_#t~mem36#1.base| v_ArrVal_5026))) (store .cse2 (select (select .cse2 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_4979)))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_4980)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))))) is different from false [2024-11-23 23:42:32,688 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1953622389] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 23:42:32,688 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-23 23:42:32,688 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10] total 19 [2024-11-23 23:42:32,688 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [345031927] [2024-11-23 23:42:32,688 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-23 23:42:32,689 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-11-23 23:42:32,689 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-23 23:42:32,689 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-11-23 23:42:32,690 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=96, Invalid=354, Unknown=10, NotChecked=470, Total=930 [2024-11-23 23:42:32,690 INFO L87 Difference]: Start difference. First operand 1029 states and 1108 transitions. Second operand has 20 states, 17 states have (on average 6.294117647058823) internal successors, (107), 20 states have internal predecessors, (107), 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) [2024-11-23 23:43:00,397 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:43:00,397 INFO L93 Difference]: Finished difference Result 1030 states and 1109 transitions. [2024-11-23 23:43:00,398 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-23 23:43:00,398 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 17 states have (on average 6.294117647058823) internal successors, (107), 20 states have internal predecessors, (107), 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 126 [2024-11-23 23:43:00,398 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:43:00,400 INFO L225 Difference]: With dead ends: 1030 [2024-11-23 23:43:00,400 INFO L226 Difference]: Without dead ends: 1030 [2024-11-23 23:43:00,400 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 271 GetRequests, 240 SyntacticMatches, 1 SemanticMatches, 30 ConstructedPredicates, 10 IntricatePredicates, 0 DeprecatedPredicates, 95 ImplicationChecksByTransitivity, 5.2s TimeCoverageRelationStatistics Valid=105, Invalid=387, Unknown=10, NotChecked=490, Total=992 [2024-11-23 23:43:00,401 INFO L435 NwaCegarLoop]: 561 mSDtfsCounter, 539 mSDsluCounter, 2581 mSDsCounter, 0 mSdLazyCounter, 2193 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 26.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 542 SdHoareTripleChecker+Valid, 3142 SdHoareTripleChecker+Invalid, 2201 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 2193 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 27.4s IncrementalHoareTripleChecker+Time [2024-11-23 23:43:00,402 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [542 Valid, 3142 Invalid, 2201 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 2193 Invalid, 0 Unknown, 0 Unchecked, 27.4s Time] [2024-11-23 23:43:00,403 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1030 states. [2024-11-23 23:43:00,415 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1030 to 1028. [2024-11-23 23:43:00,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1028 states, 706 states have (on average 1.5580736543909348) internal successors, (1100), 1022 states have internal predecessors, (1100), 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) [2024-11-23 23:43:00,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1028 states to 1028 states and 1107 transitions. [2024-11-23 23:43:00,417 INFO L78 Accepts]: Start accepts. Automaton has 1028 states and 1107 transitions. Word has length 126 [2024-11-23 23:43:00,417 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:43:00,417 INFO L471 AbstractCegarLoop]: Abstraction has 1028 states and 1107 transitions. [2024-11-23 23:43:00,417 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 17 states have (on average 6.294117647058823) internal successors, (107), 20 states have internal predecessors, (107), 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) [2024-11-23 23:43:00,417 INFO L276 IsEmpty]: Start isEmpty. Operand 1028 states and 1107 transitions. [2024-11-23 23:43:00,418 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2024-11-23 23:43:00,418 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:43:00,418 INFO L218 NwaCegarLoop]: trace histogram [44, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:43:00,437 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_973d774c-f522-4607-b146-f2545de41032/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Ended with exit code 0 [2024-11-23 23:43:00,646 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_973d774c-f522-4607-b146-f2545de41032/bin/uautomizer-verify-LYvppIcaGC/cvc4 --incremental --print-success --lang smt (35)] Ended with exit code 0 [2024-11-23 23:43:00,820 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_973d774c-f522-4607-b146-f2545de41032/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,35 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_973d774c-f522-4607-b146-f2545de41032/bin/uautomizer-verify-LYvppIcaGC/cvc4 --incremental --print-success --lang smt [2024-11-23 23:43:00,820 INFO L396 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr89REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 522 more)] === [2024-11-23 23:43:00,821 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:43:00,821 INFO L85 PathProgramCache]: Analyzing trace with hash -319707216, now seen corresponding path program 1 times [2024-11-23 23:43:00,821 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-23 23:43:00,821 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [427585394] [2024-11-23 23:43:00,821 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:43:00,821 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 23:43:00,822 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_973d774c-f522-4607-b146-f2545de41032/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 23:43:00,823 INFO L229 MonitoredProcess]: Starting monitored process 36 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_973d774c-f522-4607-b146-f2545de41032/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 23:43:00,825 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_973d774c-f522-4607-b146-f2545de41032/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Waiting until timeout for monitored process [2024-11-23 23:43:01,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:43:01,541 INFO L256 TraceCheckSpWp]: Trace formula consists of 865 conjuncts, 113 conjuncts are in the unsatisfiable core [2024-11-23 23:43:01,553 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 23:43:02,840 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2024-11-23 23:43:02,840 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 [2024-11-23 23:43:02,886 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 [2024-11-23 23:43:03,050 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 [2024-11-23 23:43:03,075 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 [2024-11-23 23:43:03,813 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 [2024-11-23 23:43:03,838 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 [2024-11-23 23:43:09,137 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-23 23:43:09,138 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 [2024-11-23 23:43:09,164 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 13 [2024-11-23 23:43:09,930 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-23 23:43:09,930 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 62 treesize of output 57 [2024-11-23 23:43:09,956 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 [2024-11-23 23:43:10,601 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-23 23:43:10,601 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 [2024-11-23 23:43:10,671 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 13 [2024-11-23 23:43:10,805 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 [2024-11-23 23:43:10,829 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 [2024-11-23 23:43:11,071 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 946 trivial. 0 not checked. [2024-11-23 23:43:11,071 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-23 23:43:11,883 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (and (forall ((v_ArrVal_5511 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (select (store |c_#memory_$Pointer$#2.offset| |c_ULTIMATE.start_main_#t~mem39#1.base| v_ArrVal_5511) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (bvule (bvadd (_ bv8 32) .cse0) (bvadd (_ bv12 32) .cse0)))) (forall ((v_ArrVal_5511 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_5512 (Array (_ BitVec 32) (_ BitVec 32)))) (bvule (bvadd (_ bv12 32) (select (select (store |c_#memory_$Pointer$#2.offset| |c_ULTIMATE.start_main_#t~mem39#1.base| v_ArrVal_5511) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)) (select |c_#length| (select (select (store |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_main_#t~mem39#1.base| v_ArrVal_5512) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))))) is different from false [2024-11-23 23:43:11,986 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$#2.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (and (forall ((v_ArrVal_5511 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_5512 (Array (_ BitVec 32) (_ BitVec 32)))) (bvule (bvadd (_ bv12 32) (select (select (store |c_#memory_$Pointer$#2.offset| .cse0 v_ArrVal_5511) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)) (select |c_#length| (select (select (store |c_#memory_$Pointer$#2.base| .cse0 v_ArrVal_5512) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))) (forall ((v_ArrVal_5511 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse2 (select (select (store |c_#memory_$Pointer$#2.offset| .cse0 v_ArrVal_5511) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (bvule (bvadd (_ bv8 32) .cse2) (bvadd (_ bv12 32) .cse2))))))) is different from false [2024-11-23 23:43:12,170 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (and (forall ((v_ArrVal_5509 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_5510 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_5511 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (select (store (store |c_#memory_$Pointer$#2.offset| |c_ULTIMATE.start_main_#t~mem38#1.base| v_ArrVal_5509) (select (select (store |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_main_#t~mem38#1.base| v_ArrVal_5510) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_5511) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (bvule (bvadd (_ bv8 32) .cse0) (bvadd (_ bv12 32) .cse0)))) (forall ((v_ArrVal_5509 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_5510 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_5511 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_5512 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse3 (store |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_main_#t~mem38#1.base| v_ArrVal_5510))) (let ((.cse2 (select (select .cse3 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (bvule (bvadd (_ bv12 32) (select (select (store (store |c_#memory_$Pointer$#2.offset| |c_ULTIMATE.start_main_#t~mem38#1.base| v_ArrVal_5509) .cse2 v_ArrVal_5511) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)) (select |c_#length| (select (select (store .cse3 .cse2 v_ArrVal_5512) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))))))) is different from false [2024-11-23 23:43:12,315 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$#2.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (and (forall ((v_ArrVal_5509 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_5510 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_5511 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_5512 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse3 (store |c_#memory_$Pointer$#2.base| .cse0 v_ArrVal_5510))) (let ((.cse1 (select (select .cse3 |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (bvule (bvadd (_ bv12 32) (select (select (store (store |c_#memory_$Pointer$#2.offset| .cse0 v_ArrVal_5509) .cse1 v_ArrVal_5511) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2)) (select |c_#length| (select (select (store .cse3 .cse1 v_ArrVal_5512) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2)))))) (forall ((v_ArrVal_5509 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_5510 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_5511 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse4 (select (select (store (store |c_#memory_$Pointer$#2.offset| .cse0 v_ArrVal_5509) (select (select (store |c_#memory_$Pointer$#2.base| .cse0 v_ArrVal_5510) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2) v_ArrVal_5511) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (bvule (bvadd (_ bv8 32) .cse4) (bvadd (_ bv12 32) .cse4))))))) is different from false [2024-11-23 23:43:16,571 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse2 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (and (forall ((v_ArrVal_5509 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_5603 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_5604 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_5510 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_5511 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_5512 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse4 (store |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_main_#t~mem36#1.base| v_ArrVal_5603))) (let ((.cse0 (select (select .cse4 |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (let ((.cse3 (store .cse4 .cse0 v_ArrVal_5510))) (let ((.cse1 (select (select .cse3 |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (bvule (bvadd (_ bv12 32) (select (select (store (store (store |c_#memory_$Pointer$#2.offset| |c_ULTIMATE.start_main_#t~mem36#1.base| v_ArrVal_5604) .cse0 v_ArrVal_5509) .cse1 v_ArrVal_5511) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2)) (select |c_#length| (select (select (store .cse3 .cse1 v_ArrVal_5512) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2)))))))) (forall ((v_ArrVal_5509 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_5603 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_5604 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_5510 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_5511 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse5 (select (select (let ((.cse7 (store |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_main_#t~mem36#1.base| v_ArrVal_5603))) (let ((.cse6 (select (select .cse7 |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (store (store (store |c_#memory_$Pointer$#2.offset| |c_ULTIMATE.start_main_#t~mem36#1.base| v_ArrVal_5604) .cse6 v_ArrVal_5509) (select (select (store .cse7 .cse6 v_ArrVal_5510) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2) v_ArrVal_5511))) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (bvule (bvadd (_ bv8 32) .cse5) (bvadd (_ bv12 32) .cse5)))))) is different from false [2024-11-23 23:43:16,595 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-23 23:43:16,595 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [427585394] [2024-11-23 23:43:16,595 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [427585394] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 23:43:16,595 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [220404195] [2024-11-23 23:43:16,595 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:43:16,595 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-23 23:43:16,595 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_973d774c-f522-4607-b146-f2545de41032/bin/uautomizer-verify-LYvppIcaGC/cvc4 [2024-11-23 23:43:16,597 INFO L229 MonitoredProcess]: Starting monitored process 37 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_973d774c-f522-4607-b146-f2545de41032/bin/uautomizer-verify-LYvppIcaGC/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-23 23:43:16,598 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_973d774c-f522-4607-b146-f2545de41032/bin/uautomizer-verify-LYvppIcaGC/cvc4 --incremental --print-success --lang smt (37)] Waiting until timeout for monitored process [2024-11-23 23:43:42,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:43:42,132 INFO L256 TraceCheckSpWp]: Trace formula consists of 865 conjuncts, 116 conjuncts are in the unsatisfiable core [2024-11-23 23:43:42,145 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 23:43:42,174 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 [2024-11-23 23:43:43,458 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 [2024-11-23 23:43:43,602 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2024-11-23 23:43:43,602 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 [2024-11-23 23:43:43,695 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 [2024-11-23 23:43:43,721 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 [2024-11-23 23:43:44,203 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 [2024-11-23 23:43:44,236 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 [2024-11-23 23:43:49,342 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-23 23:43:49,342 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 [2024-11-23 23:43:49,367 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 [2024-11-23 23:43:49,884 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-23 23:43:49,884 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 [2024-11-23 23:43:49,956 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 [2024-11-23 23:43:50,324 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-23 23:43:50,325 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 [2024-11-23 23:43:50,351 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 [2024-11-23 23:43:50,520 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 [2024-11-23 23:43:50,553 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 [2024-11-23 23:43:50,599 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 946 trivial. 0 not checked. [2024-11-23 23:43:50,599 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-23 23:43:50,841 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (and (forall ((v_ArrVal_6090 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (select (store |c_#memory_$Pointer$#2.offset| |c_ULTIMATE.start_main_#t~mem39#1.base| v_ArrVal_6090) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (bvule (bvadd (_ bv8 32) .cse0) (bvadd (_ bv12 32) .cse0)))) (forall ((v_ArrVal_6091 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_6090 (Array (_ BitVec 32) (_ BitVec 32)))) (bvule (bvadd (_ bv12 32) (select (select (store |c_#memory_$Pointer$#2.offset| |c_ULTIMATE.start_main_#t~mem39#1.base| v_ArrVal_6090) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)) (select |c_#length| (select (select (store |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_main_#t~mem39#1.base| v_ArrVal_6091) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))))) is different from false [2024-11-23 23:43:50,933 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$#2.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (and (forall ((v_ArrVal_6090 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (select (store |c_#memory_$Pointer$#2.offset| .cse1 v_ArrVal_6090) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (bvule (bvadd .cse0 (_ bv8 32)) (bvadd .cse0 (_ bv12 32))))) (forall ((v_ArrVal_6091 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_6090 (Array (_ BitVec 32) (_ BitVec 32)))) (bvule (bvadd (select (select (store |c_#memory_$Pointer$#2.offset| .cse1 v_ArrVal_6090) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2) (_ bv12 32)) (select |c_#length| (select (select (store |c_#memory_$Pointer$#2.base| .cse1 v_ArrVal_6091) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))))))) is different from false [2024-11-23 23:43:51,132 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (and (forall ((v_ArrVal_6090 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_6088 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_6089 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (select (store (store |c_#memory_$Pointer$#2.offset| |c_ULTIMATE.start_main_#t~mem38#1.base| v_ArrVal_6089) (select (select (store |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_main_#t~mem38#1.base| v_ArrVal_6088) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_6090) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (bvule (bvadd (_ bv8 32) .cse0) (bvadd (_ bv12 32) .cse0)))) (forall ((v_ArrVal_6091 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_6090 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_6088 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_6089 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse3 (store |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_main_#t~mem38#1.base| v_ArrVal_6088))) (let ((.cse2 (select (select .cse3 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (bvule (bvadd (_ bv12 32) (select (select (store (store |c_#memory_$Pointer$#2.offset| |c_ULTIMATE.start_main_#t~mem38#1.base| v_ArrVal_6089) .cse2 v_ArrVal_6090) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)) (select |c_#length| (select (select (store .cse3 .cse2 v_ArrVal_6091) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))))))) is different from false [2024-11-23 23:43:51,278 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$#2.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (and (forall ((v_ArrVal_6090 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_6088 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_6089 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (select (store (store |c_#memory_$Pointer$#2.offset| .cse1 v_ArrVal_6089) (select (select (store |c_#memory_$Pointer$#2.base| .cse1 v_ArrVal_6088) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2) v_ArrVal_6090) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (bvule (bvadd (_ bv8 32) .cse0) (bvadd (_ bv12 32) .cse0)))) (forall ((v_ArrVal_6091 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_6090 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_6088 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_6089 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse4 (store |c_#memory_$Pointer$#2.base| .cse1 v_ArrVal_6088))) (let ((.cse3 (select (select .cse4 |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (bvule (bvadd (_ bv12 32) (select (select (store (store |c_#memory_$Pointer$#2.offset| .cse1 v_ArrVal_6089) .cse3 v_ArrVal_6090) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2)) (select |c_#length| (select (select (store .cse4 .cse3 v_ArrVal_6091) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))))))))) is different from false [2024-11-23 23:43:57,443 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [220404195] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 23:43:57,443 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-23 23:43:57,444 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 10 [2024-11-23 23:43:57,444 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2046326355] [2024-11-23 23:43:57,444 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-23 23:43:57,444 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-23 23:43:57,444 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-23 23:43:57,445 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-23 23:43:57,445 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=148, Unknown=17, NotChecked=288, Total=506 [2024-11-23 23:43:57,445 INFO L87 Difference]: Start difference. First operand 1028 states and 1107 transitions. Second operand has 11 states, 9 states have (on average 9.555555555555555) internal successors, (86), 11 states have internal predecessors, (86), 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) [2024-11-23 23:44:47,301 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:44:47,301 INFO L93 Difference]: Finished difference Result 1027 states and 1106 transitions. [2024-11-23 23:44:47,302 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-23 23:44:47,302 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 9 states have (on average 9.555555555555555) internal successors, (86), 11 states have internal predecessors, (86), 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 126 [2024-11-23 23:44:47,303 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:44:47,305 INFO L225 Difference]: With dead ends: 1027 [2024-11-23 23:44:47,305 INFO L226 Difference]: Without dead ends: 1027 [2024-11-23 23:44:47,305 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 276 GetRequests, 246 SyntacticMatches, 3 SemanticMatches, 27 ConstructedPredicates, 9 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 8.1s TimeCoverageRelationStatistics Valid=92, Invalid=306, Unknown=18, NotChecked=396, Total=812 [2024-11-23 23:44:47,306 INFO L435 NwaCegarLoop]: 560 mSDtfsCounter, 547 mSDsluCounter, 2448 mSDsCounter, 0 mSdLazyCounter, 3907 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 45.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 549 SdHoareTripleChecker+Valid, 3008 SdHoareTripleChecker+Invalid, 3913 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 3907 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 47.5s IncrementalHoareTripleChecker+Time [2024-11-23 23:44:47,306 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [549 Valid, 3008 Invalid, 3913 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 3907 Invalid, 0 Unknown, 0 Unchecked, 47.5s Time] [2024-11-23 23:44:47,308 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1027 states. [2024-11-23 23:44:47,313 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1027 to 1027. [2024-11-23 23:44:47,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1027 states, 706 states have (on average 1.5566572237960339) internal successors, (1099), 1021 states have internal predecessors, (1099), 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) [2024-11-23 23:44:47,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1027 states to 1027 states and 1106 transitions. [2024-11-23 23:44:47,315 INFO L78 Accepts]: Start accepts. Automaton has 1027 states and 1106 transitions. Word has length 126 [2024-11-23 23:44:47,316 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:44:47,316 INFO L471 AbstractCegarLoop]: Abstraction has 1027 states and 1106 transitions. [2024-11-23 23:44:47,316 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 9 states have (on average 9.555555555555555) internal successors, (86), 11 states have internal predecessors, (86), 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) [2024-11-23 23:44:47,316 INFO L276 IsEmpty]: Start isEmpty. Operand 1027 states and 1106 transitions. [2024-11-23 23:44:47,317 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2024-11-23 23:44:47,317 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:44:47,317 INFO L218 NwaCegarLoop]: trace histogram [44, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:44:47,336 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_973d774c-f522-4607-b146-f2545de41032/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Ended with exit code 0 [2024-11-23 23:44:47,549 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_973d774c-f522-4607-b146-f2545de41032/bin/uautomizer-verify-LYvppIcaGC/cvc4 --incremental --print-success --lang smt (37)] Ended with exit code 0 [2024-11-23 23:44:47,717 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_973d774c-f522-4607-b146-f2545de41032/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,37 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_973d774c-f522-4607-b146-f2545de41032/bin/uautomizer-verify-LYvppIcaGC/cvc4 --incremental --print-success --lang smt [2024-11-23 23:44:47,718 INFO L396 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr92REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 522 more)] === [2024-11-23 23:44:47,718 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:44:47,718 INFO L85 PathProgramCache]: Analyzing trace with hash 1840095557, now seen corresponding path program 1 times [2024-11-23 23:44:47,719 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-23 23:44:47,719 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1022948859] [2024-11-23 23:44:47,719 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:44:47,719 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 23:44:47,719 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_973d774c-f522-4607-b146-f2545de41032/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 23:44:47,721 INFO L229 MonitoredProcess]: Starting monitored process 38 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_973d774c-f522-4607-b146-f2545de41032/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 23:44:47,722 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_973d774c-f522-4607-b146-f2545de41032/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Waiting until timeout for monitored process [2024-11-23 23:44:48,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:44:48,744 INFO L256 TraceCheckSpWp]: Trace formula consists of 894 conjuncts, 62 conjuncts are in the unsatisfiable core [2024-11-23 23:44:48,754 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 23:44:48,789 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 [2024-11-23 23:44:50,255 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2024-11-23 23:44:50,255 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 [2024-11-23 23:44:50,382 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 [2024-11-23 23:44:53,242 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-23 23:44:53,242 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 [2024-11-23 23:44:53,667 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-23 23:44:53,667 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 [2024-11-23 23:44:54,082 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-23 23:44:54,082 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 [2024-11-23 23:44:54,522 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-23 23:44:54,522 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 [2024-11-23 23:44:54,888 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 [2024-11-23 23:44:55,123 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 946 trivial. 0 not checked. [2024-11-23 23:44:55,123 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-23 23:44:55,559 INFO L349 Elim1Store]: treesize reduction 7, result has 63.2 percent of original size [2024-11-23 23:44:55,559 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 24 [2024-11-23 23:44:56,051 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_6637 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (let ((.cse0 (select (select |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (= .cse0 (select (select (store |c_#memory_$Pointer$#2.base| .cse0 v_ArrVal_6637) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))))) is different from false [2024-11-23 23:44:56,135 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_6636 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_6637 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse1 (store |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_main_#t~mem39#1.base| v_ArrVal_6636)) (.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_6637) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))))) is different from false [2024-11-23 23:44:56,194 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_6636 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_6637 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse2 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (let ((.cse0 (store |c_#memory_$Pointer$#2.base| (select (select |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse2) v_ArrVal_6636))) (let ((.cse1 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (= (select (select (store .cse0 .cse1 v_ArrVal_6637) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2) .cse1))))) is different from false [2024-11-23 23:44:56,300 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_6635 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_6636 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_6637 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse2 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (let ((.cse1 (let ((.cse3 (store |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_main_#t~mem38#1.base| v_ArrVal_6635))) (store .cse3 (select (select .cse3 |c_ULTIMATE.start_main_~user~0#1.base|) .cse2) v_ArrVal_6636)))) (let ((.cse0 (select (select .cse1 |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (= .cse0 (select (select (store .cse1 .cse0 v_ArrVal_6637) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2)))))) is different from false [2024-11-23 23:44:56,363 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_6635 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_6636 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_6637 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse2 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (let ((.cse0 (let ((.cse3 (store |c_#memory_$Pointer$#2.base| (select (select |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse2) v_ArrVal_6635))) (store .cse3 (select (select .cse3 |c_ULTIMATE.start_main_~user~0#1.base|) .cse2) v_ArrVal_6636)))) (let ((.cse1 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (= (select (select (store .cse0 .cse1 v_ArrVal_6637) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2) .cse1))))) is different from false [2024-11-23 23:44:58,089 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_6635 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_6636 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_6637 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_6683 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse2 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (let ((.cse0 (let ((.cse3 (let ((.cse4 (store |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_main_#t~mem36#1.base| v_ArrVal_6683))) (store .cse4 (select (select .cse4 |c_ULTIMATE.start_main_~user~0#1.base|) .cse2) v_ArrVal_6635)))) (store .cse3 (select (select .cse3 |c_ULTIMATE.start_main_~user~0#1.base|) .cse2) v_ArrVal_6636)))) (let ((.cse1 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (= (select (select (store .cse0 .cse1 v_ArrVal_6637) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2) .cse1))))) is different from false [2024-11-23 23:44:58,103 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-23 23:44:58,103 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1022948859] [2024-11-23 23:44:58,103 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1022948859] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 23:44:58,103 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1750457763] [2024-11-23 23:44:58,104 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:44:58,104 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-23 23:44:58,104 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_973d774c-f522-4607-b146-f2545de41032/bin/uautomizer-verify-LYvppIcaGC/cvc4 [2024-11-23 23:44:58,106 INFO L229 MonitoredProcess]: Starting monitored process 39 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_973d774c-f522-4607-b146-f2545de41032/bin/uautomizer-verify-LYvppIcaGC/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-23 23:44:58,108 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_973d774c-f522-4607-b146-f2545de41032/bin/uautomizer-verify-LYvppIcaGC/cvc4 --incremental --print-success --lang smt (39)] Waiting until timeout for monitored process [2024-11-23 23:45:30,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:45:30,154 INFO L256 TraceCheckSpWp]: Trace formula consists of 894 conjuncts, 66 conjuncts are in the unsatisfiable core [2024-11-23 23:45:30,162 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 23:45:30,205 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 [2024-11-23 23:45:31,854 INFO L349 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2024-11-23 23:45:31,854 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 19 treesize of output 27 [2024-11-23 23:45:32,216 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 [2024-11-23 23:45:33,205 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 12 [2024-11-23 23:45:38,795 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-23 23:45:38,795 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 [2024-11-23 23:45:39,745 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-23 23:45:39,745 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 [2024-11-23 23:45:40,479 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-23 23:45:40,479 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 [2024-11-23 23:45:41,202 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-23 23:45:41,202 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 [2024-11-23 23:45:41,378 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 15 [2024-11-23 23:45:41,872 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 946 trivial. 0 not checked. [2024-11-23 23:45:41,872 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-23 23:45:41,992 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_7138 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (_ bv1 1) (select |c_#valid| (select (select (store |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_main_#t~mem40#1.base| v_ArrVal_7138) |c_ULTIMATE.start_main_~user~0#1.base|) (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|)))))) is different from false [2024-11-23 23:45:42,061 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_7138 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (_ bv1 1) (select |c_#valid| (let ((.cse0 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (store |c_#memory_$Pointer$#2.base| (select (select |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse0) v_ArrVal_7138) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0)))))) is different from false [2024-11-23 23:45:42,144 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_7137 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7138 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (_ bv1 1) (select |c_#valid| (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (let ((.cse0 (store |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_main_#t~mem39#1.base| v_ArrVal_7137))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_7138)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))))) is different from false [2024-11-23 23:45:42,195 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_7137 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7138 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (_ bv1 1) (select |c_#valid| (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (let ((.cse0 (store |c_#memory_$Pointer$#2.base| (select (select |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_7137))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_7138)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))))) is different from false [2024-11-23 23:45:42,274 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_7137 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7138 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7136 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (_ bv1 1) (select |c_#valid| (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (let ((.cse0 (let ((.cse2 (store |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_main_#t~mem38#1.base| v_ArrVal_7136))) (store .cse2 (select (select .cse2 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_7137)))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_7138)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))))) is different from false [2024-11-23 23:45:42,329 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_7137 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7138 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7136 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (_ bv1 1) (select |c_#valid| (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (let ((.cse0 (let ((.cse2 (store |c_#memory_$Pointer$#2.base| (select (select |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_7136))) (store .cse2 (select (select .cse2 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_7137)))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_7138)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))))) is different from false [2024-11-23 23:45:43,869 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_7184 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7137 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7138 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7136 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (_ bv1 1) (select |c_#valid| (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (let ((.cse0 (let ((.cse2 (let ((.cse3 (store |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_main_#t~mem36#1.base| v_ArrVal_7184))) (store .cse3 (select (select .cse3 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_7136)))) (store .cse2 (select (select .cse2 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_7137)))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_7138)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))))) is different from false [2024-11-23 23:45:43,890 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1750457763] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 23:45:43,890 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-23 23:45:43,890 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11] total 21 [2024-11-23 23:45:43,890 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [327803516] [2024-11-23 23:45:43,891 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-23 23:45:43,891 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2024-11-23 23:45:43,891 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-23 23:45:43,892 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2024-11-23 23:45:43,892 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=115, Invalid=468, Unknown=21, NotChecked=728, Total=1332 [2024-11-23 23:45:43,892 INFO L87 Difference]: Start difference. First operand 1027 states and 1106 transitions. Second operand has 22 states, 19 states have (on average 5.7368421052631575) internal successors, (109), 22 states have internal predecessors, (109), 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) [2024-11-23 23:46:19,877 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-23 23:46:19,877 INFO L93 Difference]: Finished difference Result 1028 states and 1107 transitions. [2024-11-23 23:46:19,878 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-23 23:46:19,878 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 19 states have (on average 5.7368421052631575) internal successors, (109), 22 states have internal predecessors, (109), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 129 [2024-11-23 23:46:19,878 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-23 23:46:19,880 INFO L225 Difference]: With dead ends: 1028 [2024-11-23 23:46:19,880 INFO L226 Difference]: Without dead ends: 1028 [2024-11-23 23:46:19,880 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 283 GetRequests, 246 SyntacticMatches, 1 SemanticMatches, 36 ConstructedPredicates, 13 IntricatePredicates, 0 DeprecatedPredicates, 127 ImplicationChecksByTransitivity, 6.3s TimeCoverageRelationStatistics Valid=124, Invalid=507, Unknown=21, NotChecked=754, Total=1406 [2024-11-23 23:46:19,880 INFO L435 NwaCegarLoop]: 560 mSDtfsCounter, 536 mSDsluCounter, 3909 mSDsCounter, 0 mSdLazyCounter, 3099 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 34.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 539 SdHoareTripleChecker+Valid, 4469 SdHoareTripleChecker+Invalid, 3106 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 3099 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 35.6s IncrementalHoareTripleChecker+Time [2024-11-23 23:46:19,880 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [539 Valid, 4469 Invalid, 3106 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 3099 Invalid, 0 Unknown, 0 Unchecked, 35.6s Time] [2024-11-23 23:46:19,881 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1028 states. [2024-11-23 23:46:19,890 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1028 to 1026. [2024-11-23 23:46:19,892 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1026 states, 706 states have (on average 1.5552407932011332) internal successors, (1098), 1020 states have internal predecessors, (1098), 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) [2024-11-23 23:46:19,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1026 states to 1026 states and 1105 transitions. [2024-11-23 23:46:19,893 INFO L78 Accepts]: Start accepts. Automaton has 1026 states and 1105 transitions. Word has length 129 [2024-11-23 23:46:19,893 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-23 23:46:19,893 INFO L471 AbstractCegarLoop]: Abstraction has 1026 states and 1105 transitions. [2024-11-23 23:46:19,893 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 19 states have (on average 5.7368421052631575) internal successors, (109), 22 states have internal predecessors, (109), 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) [2024-11-23 23:46:19,893 INFO L276 IsEmpty]: Start isEmpty. Operand 1026 states and 1105 transitions. [2024-11-23 23:46:19,894 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2024-11-23 23:46:19,894 INFO L210 NwaCegarLoop]: Found error trace [2024-11-23 23:46:19,894 INFO L218 NwaCegarLoop]: trace histogram [44, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-23 23:46:19,926 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_973d774c-f522-4607-b146-f2545de41032/bin/uautomizer-verify-LYvppIcaGC/cvc4 --incremental --print-success --lang smt (39)] Ended with exit code 0 [2024-11-23 23:46:20,109 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_973d774c-f522-4607-b146-f2545de41032/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Forceful destruction successful, exit code 0 [2024-11-23 23:46:20,294 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 39 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_973d774c-f522-4607-b146-f2545de41032/bin/uautomizer-verify-LYvppIcaGC/cvc4 --incremental --print-success --lang smt,38 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_973d774c-f522-4607-b146-f2545de41032/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 23:46:20,295 INFO L396 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr93REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 522 more)] === [2024-11-23 23:46:20,295 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-23 23:46:20,295 INFO L85 PathProgramCache]: Analyzing trace with hash 1840095558, now seen corresponding path program 1 times [2024-11-23 23:46:20,295 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-23 23:46:20,296 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [670860931] [2024-11-23 23:46:20,296 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:46:20,296 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-23 23:46:20,296 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_973d774c-f522-4607-b146-f2545de41032/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-23 23:46:20,298 INFO L229 MonitoredProcess]: Starting monitored process 40 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_973d774c-f522-4607-b146-f2545de41032/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-23 23:46:20,299 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_973d774c-f522-4607-b146-f2545de41032/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Waiting until timeout for monitored process [2024-11-23 23:46:21,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-23 23:46:21,093 INFO L256 TraceCheckSpWp]: Trace formula consists of 894 conjuncts, 116 conjuncts are in the unsatisfiable core [2024-11-23 23:46:21,103 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-23 23:46:22,293 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 [2024-11-23 23:46:22,406 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2024-11-23 23:46:22,407 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 [2024-11-23 23:46:22,593 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 [2024-11-23 23:46:22,637 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 [2024-11-23 23:46:23,288 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 [2024-11-23 23:46:23,311 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 [2024-11-23 23:46:27,847 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-23 23:46:27,847 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 [2024-11-23 23:46:27,871 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 [2024-11-23 23:46:28,567 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-23 23:46:28,568 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 62 treesize of output 57 [2024-11-23 23:46:28,635 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 [2024-11-23 23:46:29,186 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-23 23:46:29,186 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 [2024-11-23 23:46:29,210 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 [2024-11-23 23:46:29,838 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-23 23:46:29,839 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 62 treesize of output 57 [2024-11-23 23:46:29,862 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 [2024-11-23 23:46:30,018 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 [2024-11-23 23:46:30,061 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 [2024-11-23 23:46:30,280 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 946 trivial. 0 not checked. [2024-11-23 23:46:30,280 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-23 23:46:31,459 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$#2.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (and (forall ((v_ArrVal_7687 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (select (store |c_#memory_$Pointer$#2.offset| .cse1 v_ArrVal_7687) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (bvule (bvadd .cse0 (_ bv20 32)) (bvadd .cse0 (_ bv24 32))))) (forall ((v_ArrVal_7687 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7686 (Array (_ BitVec 32) (_ BitVec 32)))) (bvule (bvadd (select (select (store |c_#memory_$Pointer$#2.offset| .cse1 v_ArrVal_7687) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2) (_ bv24 32)) (select |c_#length| (select (select (store |c_#memory_$Pointer$#2.base| .cse1 v_ArrVal_7686) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))))))) is different from false [2024-11-23 23:46:31,636 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (and (forall ((v_ArrVal_7687 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7686 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7685 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7684 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse2 (store |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_main_#t~mem39#1.base| v_ArrVal_7685))) (let ((.cse0 (select (select .cse2 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (bvule (bvadd (_ bv24 32) (select (select (store (store |c_#memory_$Pointer$#2.offset| |c_ULTIMATE.start_main_#t~mem39#1.base| v_ArrVal_7684) .cse0 v_ArrVal_7687) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)) (select |c_#length| (select (select (store .cse2 .cse0 v_ArrVal_7686) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))))) (forall ((v_ArrVal_7687 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7685 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7684 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse3 (select (select (store (store |c_#memory_$Pointer$#2.offset| |c_ULTIMATE.start_main_#t~mem39#1.base| v_ArrVal_7684) (select (select (store |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_main_#t~mem39#1.base| v_ArrVal_7685) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_7687) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (bvule (bvadd (_ bv20 32) .cse3) (bvadd (_ bv24 32) .cse3)))))) is different from false [2024-11-23 23:46:31,730 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$#2.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (and (forall ((v_ArrVal_7687 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7686 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7685 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7684 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse3 (store |c_#memory_$Pointer$#2.base| .cse0 v_ArrVal_7685))) (let ((.cse1 (select (select .cse3 |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (bvule (bvadd (_ bv24 32) (select (select (store (store |c_#memory_$Pointer$#2.offset| .cse0 v_ArrVal_7684) .cse1 v_ArrVal_7687) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2)) (select |c_#length| (select (select (store .cse3 .cse1 v_ArrVal_7686) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2)))))) (forall ((v_ArrVal_7687 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7685 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7684 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse4 (select (select (store (store |c_#memory_$Pointer$#2.offset| .cse0 v_ArrVal_7684) (select (select (store |c_#memory_$Pointer$#2.base| .cse0 v_ArrVal_7685) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2) v_ArrVal_7687) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (bvule (bvadd (_ bv20 32) .cse4) (bvadd (_ bv24 32) .cse4))))))) is different from false [2024-11-23 23:46:31,979 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse2 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (and (forall ((v_ArrVal_7682 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7687 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7686 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7685 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7684 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7683 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse4 (store |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_main_#t~mem38#1.base| v_ArrVal_7682))) (let ((.cse0 (select (select .cse4 |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (let ((.cse3 (store .cse4 .cse0 v_ArrVal_7685))) (let ((.cse1 (select (select .cse3 |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (bvule (bvadd (_ bv24 32) (select (select (store (store (store |c_#memory_$Pointer$#2.offset| |c_ULTIMATE.start_main_#t~mem38#1.base| v_ArrVal_7683) .cse0 v_ArrVal_7684) .cse1 v_ArrVal_7687) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2)) (select |c_#length| (select (select (store .cse3 .cse1 v_ArrVal_7686) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2)))))))) (forall ((v_ArrVal_7682 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7687 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7685 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7684 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7683 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse5 (select (select (let ((.cse7 (store |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_main_#t~mem38#1.base| v_ArrVal_7682))) (let ((.cse6 (select (select .cse7 |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (store (store (store |c_#memory_$Pointer$#2.offset| |c_ULTIMATE.start_main_#t~mem38#1.base| v_ArrVal_7683) .cse6 v_ArrVal_7684) (select (select (store .cse7 .cse6 v_ArrVal_7685) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2) v_ArrVal_7687))) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (bvule (bvadd (_ bv20 32) .cse5) (bvadd (_ bv24 32) .cse5)))))) is different from false [2024-11-23 23:46:39,830 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse4 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (and (forall ((v_ArrVal_7682 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7779 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7778 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7687 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7685 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7684 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7683 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (select (let ((.cse5 (store |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_main_#t~mem36#1.base| v_ArrVal_7779))) (let ((.cse1 (select (select .cse5 |c_ULTIMATE.start_main_~user~0#1.base|) .cse4))) (let ((.cse3 (store .cse5 .cse1 v_ArrVal_7682))) (let ((.cse2 (select (select .cse3 |c_ULTIMATE.start_main_~user~0#1.base|) .cse4))) (store (store (store (store |c_#memory_$Pointer$#2.offset| |c_ULTIMATE.start_main_#t~mem36#1.base| v_ArrVal_7778) .cse1 v_ArrVal_7683) .cse2 v_ArrVal_7684) (select (select (store .cse3 .cse2 v_ArrVal_7685) |c_ULTIMATE.start_main_~user~0#1.base|) .cse4) v_ArrVal_7687))))) |c_ULTIMATE.start_main_~user~0#1.base|) .cse4))) (bvule (bvadd (_ bv20 32) .cse0) (bvadd (_ bv24 32) .cse0)))) (forall ((v_ArrVal_7682 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7779 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7778 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7687 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7686 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7685 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7684 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7683 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse11 (store |c_#memory_$Pointer$#2.base| |c_ULTIMATE.start_main_#t~mem36#1.base| v_ArrVal_7779))) (let ((.cse6 (select (select .cse11 |c_ULTIMATE.start_main_~user~0#1.base|) .cse4))) (let ((.cse10 (store .cse11 .cse6 v_ArrVal_7682))) (let ((.cse7 (select (select .cse10 |c_ULTIMATE.start_main_~user~0#1.base|) .cse4))) (let ((.cse9 (store .cse10 .cse7 v_ArrVal_7685))) (let ((.cse8 (select (select .cse9 |c_ULTIMATE.start_main_~user~0#1.base|) .cse4))) (bvule (bvadd (_ bv24 32) (select (select (store (store (store (store |c_#memory_$Pointer$#2.offset| |c_ULTIMATE.start_main_#t~mem36#1.base| v_ArrVal_7778) .cse6 v_ArrVal_7683) .cse7 v_ArrVal_7684) .cse8 v_ArrVal_7687) |c_ULTIMATE.start_main_~user~0#1.base|) .cse4)) (select |c_#length| (select (select (store .cse9 .cse8 v_ArrVal_7686) |c_ULTIMATE.start_main_~user~0#1.base|) .cse4)))))))))))) is different from false [2024-11-23 23:46:39,886 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-23 23:46:39,886 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [670860931] [2024-11-23 23:46:39,887 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [670860931] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-23 23:46:39,887 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1636041544] [2024-11-23 23:46:39,887 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-23 23:46:39,887 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-23 23:46:39,887 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_973d774c-f522-4607-b146-f2545de41032/bin/uautomizer-verify-LYvppIcaGC/cvc4 [2024-11-23 23:46:39,888 INFO L229 MonitoredProcess]: Starting monitored process 41 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_973d774c-f522-4607-b146-f2545de41032/bin/uautomizer-verify-LYvppIcaGC/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-23 23:46:39,901 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_973d774c-f522-4607-b146-f2545de41032/bin/uautomizer-verify-LYvppIcaGC/cvc4 --incremental --print-success --lang smt (41)] Waiting until timeout for monitored process