./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/ldv-memsafety/memleaks_test23_2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 826ab2ba Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dfa83519-f527-4546-a5cf-0431219e848a/bin/uautomizer-verify-qhAvR1uOyd/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dfa83519-f527-4546-a5cf-0431219e848a/bin/uautomizer-verify-qhAvR1uOyd/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dfa83519-f527-4546-a5cf-0431219e848a/bin/uautomizer-verify-qhAvR1uOyd/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dfa83519-f527-4546-a5cf-0431219e848a/bin/uautomizer-verify-qhAvR1uOyd/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/ldv-memsafety/memleaks_test23_2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dfa83519-f527-4546-a5cf-0431219e848a/bin/uautomizer-verify-qhAvR1uOyd/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dfa83519-f527-4546-a5cf-0431219e848a/bin/uautomizer-verify-qhAvR1uOyd --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 8821dcf0dd649f568f6a7cfce8600f412ab79c37bc3c7c7e65db385cdb052111 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-826ab2b [2024-11-13 14:08:23,572 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-13 14:08:23,632 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dfa83519-f527-4546-a5cf-0431219e848a/bin/uautomizer-verify-qhAvR1uOyd/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2024-11-13 14:08:23,638 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-13 14:08:23,638 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-13 14:08:23,665 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-13 14:08:23,666 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-13 14:08:23,666 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-13 14:08:23,670 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-13 14:08:23,670 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-13 14:08:23,672 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-13 14:08:23,672 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-13 14:08:23,673 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-13 14:08:23,673 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-13 14:08:23,673 INFO L153 SettingsManager]: * Use SBE=true [2024-11-13 14:08:23,673 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-13 14:08:23,673 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-13 14:08:23,673 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-13 14:08:23,673 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-13 14:08:23,673 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-13 14:08:23,673 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-11-13 14:08:23,674 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-11-13 14:08:23,674 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-11-13 14:08:23,674 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-13 14:08:23,674 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-13 14:08:23,674 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-13 14:08:23,674 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-13 14:08:23,674 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-13 14:08:23,675 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-13 14:08:23,676 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-13 14:08:23,676 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-13 14:08:23,676 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-13 14:08:23,676 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-13 14:08:23,677 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-13 14:08:23,677 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-13 14:08:23,678 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-13 14:08:23,678 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-13 14:08:23,678 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-13 14:08:23,678 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-13 14:08:23,679 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-13 14:08:23,679 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-13 14:08:23,679 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-13 14:08:23,679 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_dfa83519-f527-4546-a5cf-0431219e848a/bin/uautomizer-verify-qhAvR1uOyd Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8821dcf0dd649f568f6a7cfce8600f412ab79c37bc3c7c7e65db385cdb052111 [2024-11-13 14:08:24,079 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-13 14:08:24,091 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-13 14:08:24,094 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-13 14:08:24,095 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-13 14:08:24,096 INFO L274 PluginConnector]: CDTParser initialized [2024-11-13 14:08:24,098 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dfa83519-f527-4546-a5cf-0431219e848a/bin/uautomizer-verify-qhAvR1uOyd/../../sv-benchmarks/c/ldv-memsafety/memleaks_test23_2.i Unable to find full path for "g++" [2024-11-13 14:08:26,214 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-13 14:08:26,607 INFO L384 CDTParser]: Found 1 translation units. [2024-11-13 14:08:26,607 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dfa83519-f527-4546-a5cf-0431219e848a/sv-benchmarks/c/ldv-memsafety/memleaks_test23_2.i [2024-11-13 14:08:26,631 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dfa83519-f527-4546-a5cf-0431219e848a/bin/uautomizer-verify-qhAvR1uOyd/data/f9c9af6bc/7493a300f8e84117970bf4d36c1e70f4/FLAGbe76d21a0 [2024-11-13 14:08:26,654 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dfa83519-f527-4546-a5cf-0431219e848a/bin/uautomizer-verify-qhAvR1uOyd/data/f9c9af6bc/7493a300f8e84117970bf4d36c1e70f4 [2024-11-13 14:08:26,657 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-13 14:08:26,659 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-13 14:08:26,662 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-13 14:08:26,665 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-13 14:08:26,670 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-13 14:08:26,671 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 02:08:26" (1/1) ... [2024-11-13 14:08:26,672 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@38b8c9ca and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:08:26, skipping insertion in model container [2024-11-13 14:08:26,672 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 02:08:26" (1/1) ... [2024-11-13 14:08:26,704 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-13 14:08:27,130 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-13 14:08:27,232 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-13 14:08:27,238 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-13 14:08:27,259 ERROR L321 MainTranslator]: Unsupported Syntax: Found a cast between two array/pointer types of different sizes while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) [2024-11-13 14:08:27,260 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@58626ecd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:08:27, skipping insertion in model container [2024-11-13 14:08:27,260 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-13 14:08:27,261 INFO L186 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2024-11-13 14:08:27,263 INFO L158 Benchmark]: Toolchain (without parser) took 603.19ms. Allocated memory is still 117.4MB. Free memory was 90.0MB in the beginning and 75.1MB in the end (delta: 14.9MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2024-11-13 14:08:27,264 INFO L158 Benchmark]: CDTParser took 0.42ms. Allocated memory is still 83.9MB. Free memory is still 41.2MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-13 14:08:27,265 INFO L158 Benchmark]: CACSL2BoogieTranslator took 598.92ms. Allocated memory is still 117.4MB. Free memory was 90.0MB in the beginning and 75.1MB in the end (delta: 14.9MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2024-11-13 14:08:27,266 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.42ms. Allocated memory is still 83.9MB. Free memory is still 41.2MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 598.92ms. Allocated memory is still 117.4MB. Free memory was 90.0MB in the beginning and 75.1MB in the end (delta: 14.9MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 607]: 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_dfa83519-f527-4546-a5cf-0431219e848a/bin/uautomizer-verify-qhAvR1uOyd/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dfa83519-f527-4546-a5cf-0431219e848a/bin/uautomizer-verify-qhAvR1uOyd/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dfa83519-f527-4546-a5cf-0431219e848a/bin/uautomizer-verify-qhAvR1uOyd/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dfa83519-f527-4546-a5cf-0431219e848a/bin/uautomizer-verify-qhAvR1uOyd/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/ldv-memsafety/memleaks_test23_2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dfa83519-f527-4546-a5cf-0431219e848a/bin/uautomizer-verify-qhAvR1uOyd/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dfa83519-f527-4546-a5cf-0431219e848a/bin/uautomizer-verify-qhAvR1uOyd --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 8821dcf0dd649f568f6a7cfce8600f412ab79c37bc3c7c7e65db385cdb052111 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-826ab2b [2024-11-13 14:08:30,102 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-13 14:08:30,254 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dfa83519-f527-4546-a5cf-0431219e848a/bin/uautomizer-verify-qhAvR1uOyd/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2024-11-13 14:08:30,265 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-13 14:08:30,266 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-13 14:08:30,311 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-13 14:08:30,312 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-13 14:08:30,312 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-13 14:08:30,313 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-13 14:08:30,313 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-13 14:08:30,313 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-13 14:08:30,313 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-13 14:08:30,315 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-13 14:08:30,315 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-13 14:08:30,316 INFO L153 SettingsManager]: * Use SBE=true [2024-11-13 14:08:30,316 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-13 14:08:30,317 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-13 14:08:30,318 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-13 14:08:30,318 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-13 14:08:30,318 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-13 14:08:30,318 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-11-13 14:08:30,318 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-11-13 14:08:30,318 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-11-13 14:08:30,318 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-13 14:08:30,319 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-13 14:08:30,319 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2024-11-13 14:08:30,319 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-13 14:08:30,319 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2024-11-13 14:08:30,319 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-13 14:08:30,319 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-13 14:08:30,319 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-13 14:08:30,319 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-13 14:08:30,319 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-13 14:08:30,319 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-13 14:08:30,319 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-13 14:08:30,320 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-13 14:08:30,320 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-13 14:08:30,320 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-13 14:08:30,320 INFO L153 SettingsManager]: * Trace refinement strategy=FOX [2024-11-13 14:08:30,320 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2024-11-13 14:08:30,320 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-13 14:08:30,320 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-13 14:08:30,320 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-13 14:08:30,321 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-13 14:08:30,322 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_dfa83519-f527-4546-a5cf-0431219e848a/bin/uautomizer-verify-qhAvR1uOyd Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8821dcf0dd649f568f6a7cfce8600f412ab79c37bc3c7c7e65db385cdb052111 [2024-11-13 14:08:30,672 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-13 14:08:30,686 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-13 14:08:30,691 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-13 14:08:30,692 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-13 14:08:30,696 INFO L274 PluginConnector]: CDTParser initialized [2024-11-13 14:08:30,697 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dfa83519-f527-4546-a5cf-0431219e848a/bin/uautomizer-verify-qhAvR1uOyd/../../sv-benchmarks/c/ldv-memsafety/memleaks_test23_2.i Unable to find full path for "g++" [2024-11-13 14:08:32,825 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-13 14:08:33,203 INFO L384 CDTParser]: Found 1 translation units. [2024-11-13 14:08:33,204 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dfa83519-f527-4546-a5cf-0431219e848a/sv-benchmarks/c/ldv-memsafety/memleaks_test23_2.i [2024-11-13 14:08:33,226 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dfa83519-f527-4546-a5cf-0431219e848a/bin/uautomizer-verify-qhAvR1uOyd/data/60e7088d8/6322fa43e5b54f759403bddf0b1eff39/FLAGf67f11efc [2024-11-13 14:08:33,244 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dfa83519-f527-4546-a5cf-0431219e848a/bin/uautomizer-verify-qhAvR1uOyd/data/60e7088d8/6322fa43e5b54f759403bddf0b1eff39 [2024-11-13 14:08:33,247 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-13 14:08:33,249 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-13 14:08:33,251 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-13 14:08:33,252 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-13 14:08:33,257 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-13 14:08:33,258 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 02:08:33" (1/1) ... [2024-11-13 14:08:33,259 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1c25686 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:08:33, skipping insertion in model container [2024-11-13 14:08:33,260 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 02:08:33" (1/1) ... [2024-11-13 14:08:33,323 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-13 14:08:33,851 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-13 14:08:34,007 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-13 14:08:34,021 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-13 14:08:34,056 INFO L197 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2024-11-13 14:08:34,082 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-13 14:08:34,137 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-13 14:08:34,181 WARN L1072 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-13 14:08:34,184 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-13 14:08:34,193 INFO L200 MainTranslator]: Completed pre-run [2024-11-13 14:08:34,308 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-13 14:08:34,388 INFO L204 MainTranslator]: Completed translation [2024-11-13 14:08:34,389 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:08:34 WrapperNode [2024-11-13 14:08:34,390 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-13 14:08:34,391 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-13 14:08:34,391 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-13 14:08:34,394 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-13 14:08:34,403 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:08:34" (1/1) ... [2024-11-13 14:08:34,437 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:08:34" (1/1) ... [2024-11-13 14:08:34,470 INFO L138 Inliner]: procedures = 175, calls = 121, calls flagged for inlining = 30, calls inlined = 15, statements flattened = 203 [2024-11-13 14:08:34,470 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-13 14:08:34,471 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-13 14:08:34,471 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-13 14:08:34,471 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-13 14:08:34,482 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:08:34" (1/1) ... [2024-11-13 14:08:34,482 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:08:34" (1/1) ... [2024-11-13 14:08:34,489 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:08:34" (1/1) ... [2024-11-13 14:08:34,543 INFO L175 MemorySlicer]: Split 37 memory accesses to 4 slices as follows [2, 5, 1, 29]. 78 percent of accesses are in the largest equivalence class. The 4 initializations are split as follows [2, 0, 0, 2]. The 17 writes are split as follows [0, 4, 0, 13]. [2024-11-13 14:08:34,543 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:08:34" (1/1) ... [2024-11-13 14:08:34,543 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:08:34" (1/1) ... [2024-11-13 14:08:34,599 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:08:34" (1/1) ... [2024-11-13 14:08:34,603 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:08:34" (1/1) ... [2024-11-13 14:08:34,607 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:08:34" (1/1) ... [2024-11-13 14:08:34,609 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:08:34" (1/1) ... [2024-11-13 14:08:34,615 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-13 14:08:34,616 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-13 14:08:34,616 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-13 14:08:34,617 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-13 14:08:34,618 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:08:34" (1/1) ... [2024-11-13 14:08:34,632 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-13 14:08:34,650 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dfa83519-f527-4546-a5cf-0431219e848a/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:08:34,668 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dfa83519-f527-4546-a5cf-0431219e848a/bin/uautomizer-verify-qhAvR1uOyd/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-13 14:08:34,672 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dfa83519-f527-4546-a5cf-0431219e848a/bin/uautomizer-verify-qhAvR1uOyd/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-13 14:08:34,708 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#0 [2024-11-13 14:08:34,709 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#1 [2024-11-13 14:08:34,709 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#2 [2024-11-13 14:08:34,709 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#3 [2024-11-13 14:08:34,710 INFO L130 BoogieDeclarations]: Found specification of procedure LDV_INIT_LIST_HEAD [2024-11-13 14:08:34,710 INFO L138 BoogieDeclarations]: Found implementation of procedure LDV_INIT_LIST_HEAD [2024-11-13 14:08:34,710 INFO L130 BoogieDeclarations]: Found specification of procedure __ldv_list_add [2024-11-13 14:08:34,710 INFO L138 BoogieDeclarations]: Found implementation of procedure __ldv_list_add [2024-11-13 14:08:34,710 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2024-11-13 14:08:34,710 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2024-11-13 14:08:34,710 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-13 14:08:34,711 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-13 14:08:34,711 INFO L130 BoogieDeclarations]: Found specification of procedure free_reports [2024-11-13 14:08:34,712 INFO L138 BoogieDeclarations]: Found implementation of procedure free_reports [2024-11-13 14:08:34,712 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-13 14:08:34,712 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2024-11-13 14:08:34,712 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2024-11-13 14:08:34,712 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2024-11-13 14:08:34,712 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#3 [2024-11-13 14:08:34,712 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2024-11-13 14:08:34,712 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2024-11-13 14:08:34,712 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2024-11-13 14:08:34,712 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#3 [2024-11-13 14:08:34,712 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#0 [2024-11-13 14:08:34,712 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#1 [2024-11-13 14:08:34,712 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#2 [2024-11-13 14:08:34,713 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#3 [2024-11-13 14:08:34,713 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-13 14:08:34,713 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#0 [2024-11-13 14:08:34,713 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#1 [2024-11-13 14:08:34,713 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#2 [2024-11-13 14:08:34,713 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#3 [2024-11-13 14:08:34,713 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_list_del [2024-11-13 14:08:34,713 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_list_del [2024-11-13 14:08:34,713 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2024-11-13 14:08:34,713 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2024-11-13 14:08:34,716 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-13 14:08:34,716 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-13 14:08:35,048 INFO L238 CfgBuilder]: Building ICFG [2024-11-13 14:08:35,051 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-13 14:08:36,416 INFO L? ?]: Removed 247 outVars from TransFormulas that were not future-live. [2024-11-13 14:08:36,416 INFO L287 CfgBuilder]: Performing block encoding [2024-11-13 14:08:36,440 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-13 14:08:36,441 INFO L316 CfgBuilder]: Removed 2 assume(true) statements. [2024-11-13 14:08:36,441 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 02:08:36 BoogieIcfgContainer [2024-11-13 14:08:36,441 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-13 14:08:36,447 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-13 14:08:36,447 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-13 14:08:36,458 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-13 14:08:36,459 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.11 02:08:33" (1/3) ... [2024-11-13 14:08:36,461 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@20347263 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 02:08:36, skipping insertion in model container [2024-11-13 14:08:36,461 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:08:34" (2/3) ... [2024-11-13 14:08:36,462 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@20347263 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 02:08:36, skipping insertion in model container [2024-11-13 14:08:36,462 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 02:08:36" (3/3) ... [2024-11-13 14:08:36,463 INFO L112 eAbstractionObserver]: Analyzing ICFG memleaks_test23_2.i [2024-11-13 14:08:36,482 INFO L217 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-13 14:08:36,484 INFO L154 ceAbstractionStarter]: Applying trace abstraction to ICFG memleaks_test23_2.i that has 7 procedures, 205 locations, 1 initial locations, 2 loop locations, and 80 error locations. [2024-11-13 14:08:36,534 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-13 14:08:36,550 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;@427c344, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-13 14:08:36,550 INFO L334 AbstractCegarLoop]: Starting to check reachability of 80 error locations. [2024-11-13 14:08:36,555 INFO L276 IsEmpty]: Start isEmpty. Operand has 205 states, 110 states have (on average 1.8545454545454545) internal successors, (204), 190 states have internal predecessors, (204), 8 states have call successors, (8), 6 states have call predecessors, (8), 6 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2024-11-13 14:08:36,564 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2024-11-13 14:08:36,564 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:08:36,564 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:08:36,565 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting LDV_INIT_LIST_HEADErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [free_reportsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 77 more)] === [2024-11-13 14:08:36,570 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:08:36,571 INFO L85 PathProgramCache]: Analyzing trace with hash -1157574250, now seen corresponding path program 1 times [2024-11-13 14:08:36,583 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-13 14:08:36,584 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1674725419] [2024-11-13 14:08:36,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:08:36,585 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:08:36,585 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dfa83519-f527-4546-a5cf-0431219e848a/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:08:36,588 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dfa83519-f527-4546-a5cf-0431219e848a/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 14:08:36,590 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dfa83519-f527-4546-a5cf-0431219e848a/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-13 14:08:36,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:08:36,813 INFO L255 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-13 14:08:36,826 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 14:08:36,922 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2024-11-13 14:08:37,032 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:08:37,032 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 14:08:37,033 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-13 14:08:37,033 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1674725419] [2024-11-13 14:08:37,034 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1674725419] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 14:08:37,034 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 14:08:37,034 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-13 14:08:37,036 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2106686680] [2024-11-13 14:08:37,037 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 14:08:37,042 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-13 14:08:37,042 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-13 14:08:37,072 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-13 14:08:37,073 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-13 14:08:37,076 INFO L87 Difference]: Start difference. First operand has 205 states, 110 states have (on average 1.8545454545454545) internal successors, (204), 190 states have internal predecessors, (204), 8 states have call successors, (8), 6 states have call predecessors, (8), 6 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) Second operand has 7 states, 6 states have (on average 1.5) internal successors, (9), 5 states have internal predecessors, (9), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-13 14:08:38,278 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:08:38,279 INFO L93 Difference]: Finished difference Result 221 states and 236 transitions. [2024-11-13 14:08:38,280 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-13 14:08:38,282 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 1.5) internal successors, (9), 5 states have internal predecessors, (9), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 12 [2024-11-13 14:08:38,282 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:08:38,309 INFO L225 Difference]: With dead ends: 221 [2024-11-13 14:08:38,310 INFO L226 Difference]: Without dead ends: 219 [2024-11-13 14:08:38,312 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-11-13 14:08:38,316 INFO L432 NwaCegarLoop]: 205 mSDtfsCounter, 10 mSDsluCounter, 627 mSDsCounter, 0 mSdLazyCounter, 468 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 832 SdHoareTripleChecker+Invalid, 472 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 468 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-11-13 14:08:38,317 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 832 Invalid, 472 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 468 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-11-13 14:08:38,334 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 219 states. [2024-11-13 14:08:38,366 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 219 to 212. [2024-11-13 14:08:38,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 212 states, 116 states have (on average 1.8017241379310345) internal successors, (209), 195 states have internal predecessors, (209), 9 states have call successors, (9), 7 states have call predecessors, (9), 8 states have return successors, (10), 9 states have call predecessors, (10), 9 states have call successors, (10) [2024-11-13 14:08:38,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 212 states to 212 states and 228 transitions. [2024-11-13 14:08:38,376 INFO L78 Accepts]: Start accepts. Automaton has 212 states and 228 transitions. Word has length 12 [2024-11-13 14:08:38,376 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:08:38,376 INFO L471 AbstractCegarLoop]: Abstraction has 212 states and 228 transitions. [2024-11-13 14:08:38,376 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 1.5) internal successors, (9), 5 states have internal predecessors, (9), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-13 14:08:38,376 INFO L276 IsEmpty]: Start isEmpty. Operand 212 states and 228 transitions. [2024-11-13 14:08:38,377 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2024-11-13 14:08:38,377 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:08:38,377 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:08:38,404 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dfa83519-f527-4546-a5cf-0431219e848a/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-13 14:08:38,582 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dfa83519-f527-4546-a5cf-0431219e848a/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:08:38,582 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting LDV_INIT_LIST_HEADErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [free_reportsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 77 more)] === [2024-11-13 14:08:38,583 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:08:38,583 INFO L85 PathProgramCache]: Analyzing trace with hash -1157574249, now seen corresponding path program 1 times [2024-11-13 14:08:38,584 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-13 14:08:38,584 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [306714897] [2024-11-13 14:08:38,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:08:38,584 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:08:38,584 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dfa83519-f527-4546-a5cf-0431219e848a/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:08:38,587 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dfa83519-f527-4546-a5cf-0431219e848a/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 14:08:38,591 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dfa83519-f527-4546-a5cf-0431219e848a/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-13 14:08:38,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:08:38,732 INFO L255 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-13 14:08:38,736 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 14:08:38,765 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2024-11-13 14:08:39,006 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:08:39,006 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 14:08:39,006 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-13 14:08:39,006 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [306714897] [2024-11-13 14:08:39,007 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [306714897] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 14:08:39,007 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 14:08:39,007 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-13 14:08:39,007 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1941284261] [2024-11-13 14:08:39,007 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 14:08:39,008 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-13 14:08:39,008 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-13 14:08:39,009 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-13 14:08:39,009 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-13 14:08:39,010 INFO L87 Difference]: Start difference. First operand 212 states and 228 transitions. Second operand has 8 states, 7 states have (on average 1.2857142857142858) internal successors, (9), 6 states have internal predecessors, (9), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-13 14:08:40,289 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:08:40,290 INFO L93 Difference]: Finished difference Result 216 states and 230 transitions. [2024-11-13 14:08:40,290 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-13 14:08:40,291 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 1.2857142857142858) internal successors, (9), 6 states have internal predecessors, (9), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 12 [2024-11-13 14:08:40,291 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:08:40,293 INFO L225 Difference]: With dead ends: 216 [2024-11-13 14:08:40,293 INFO L226 Difference]: Without dead ends: 216 [2024-11-13 14:08:40,293 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-11-13 14:08:40,294 INFO L432 NwaCegarLoop]: 204 mSDtfsCounter, 10 mSDsluCounter, 891 mSDsCounter, 0 mSdLazyCounter, 418 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 1095 SdHoareTripleChecker+Invalid, 419 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 418 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2024-11-13 14:08:40,295 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 1095 Invalid, 419 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 418 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2024-11-13 14:08:40,296 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 216 states. [2024-11-13 14:08:40,307 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 216 to 212. [2024-11-13 14:08:40,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 212 states, 116 states have (on average 1.7844827586206897) internal successors, (207), 195 states have internal predecessors, (207), 9 states have call successors, (9), 7 states have call predecessors, (9), 8 states have return successors, (10), 9 states have call predecessors, (10), 9 states have call successors, (10) [2024-11-13 14:08:40,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 212 states to 212 states and 226 transitions. [2024-11-13 14:08:40,310 INFO L78 Accepts]: Start accepts. Automaton has 212 states and 226 transitions. Word has length 12 [2024-11-13 14:08:40,311 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:08:40,311 INFO L471 AbstractCegarLoop]: Abstraction has 212 states and 226 transitions. [2024-11-13 14:08:40,311 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 1.2857142857142858) internal successors, (9), 6 states have internal predecessors, (9), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-13 14:08:40,311 INFO L276 IsEmpty]: Start isEmpty. Operand 212 states and 226 transitions. [2024-11-13 14:08:40,312 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2024-11-13 14:08:40,312 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:08:40,312 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:08:40,329 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dfa83519-f527-4546-a5cf-0431219e848a/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-13 14:08:40,512 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dfa83519-f527-4546-a5cf-0431219e848a/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:08:40,513 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting LDV_INIT_LIST_HEADErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [free_reportsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 77 more)] === [2024-11-13 14:08:40,514 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:08:40,514 INFO L85 PathProgramCache]: Analyzing trace with hash 585236085, now seen corresponding path program 1 times [2024-11-13 14:08:40,514 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-13 14:08:40,514 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2070034933] [2024-11-13 14:08:40,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:08:40,515 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:08:40,515 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dfa83519-f527-4546-a5cf-0431219e848a/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:08:40,517 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dfa83519-f527-4546-a5cf-0431219e848a/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 14:08:40,518 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dfa83519-f527-4546-a5cf-0431219e848a/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-13 14:08:40,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:08:40,618 INFO L255 TraceCheckSpWp]: Trace formula consists of 57 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-13 14:08:40,619 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 14:08:40,692 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:08:40,692 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 14:08:40,693 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-13 14:08:40,693 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2070034933] [2024-11-13 14:08:40,693 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2070034933] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 14:08:40,693 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 14:08:40,693 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-13 14:08:40,693 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [252884705] [2024-11-13 14:08:40,694 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 14:08:40,694 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-13 14:08:40,694 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-13 14:08:40,695 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-13 14:08:40,695 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-13 14:08:40,695 INFO L87 Difference]: Start difference. First operand 212 states and 226 transitions. Second operand has 5 states, 5 states have (on average 1.8) internal successors, (9), 4 states have internal predecessors, (9), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-13 14:08:40,760 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:08:40,760 INFO L93 Difference]: Finished difference Result 203 states and 216 transitions. [2024-11-13 14:08:40,761 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-13 14:08:40,761 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 1.8) internal successors, (9), 4 states have internal predecessors, (9), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 12 [2024-11-13 14:08:40,762 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:08:40,763 INFO L225 Difference]: With dead ends: 203 [2024-11-13 14:08:40,763 INFO L226 Difference]: Without dead ends: 203 [2024-11-13 14:08:40,764 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-13 14:08:40,765 INFO L432 NwaCegarLoop]: 214 mSDtfsCounter, 0 mSDsluCounter, 623 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 837 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-13 14:08:40,765 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 837 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-13 14:08:40,766 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 203 states. [2024-11-13 14:08:40,775 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 203 to 203. [2024-11-13 14:08:40,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 203 states, 112 states have (on average 1.7767857142857142) internal successors, (199), 187 states have internal predecessors, (199), 8 states have call successors, (8), 6 states have call predecessors, (8), 7 states have return successors, (9), 9 states have call predecessors, (9), 8 states have call successors, (9) [2024-11-13 14:08:40,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 203 states to 203 states and 216 transitions. [2024-11-13 14:08:40,778 INFO L78 Accepts]: Start accepts. Automaton has 203 states and 216 transitions. Word has length 12 [2024-11-13 14:08:40,778 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:08:40,778 INFO L471 AbstractCegarLoop]: Abstraction has 203 states and 216 transitions. [2024-11-13 14:08:40,779 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 1.8) internal successors, (9), 4 states have internal predecessors, (9), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-13 14:08:40,779 INFO L276 IsEmpty]: Start isEmpty. Operand 203 states and 216 transitions. [2024-11-13 14:08:40,779 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2024-11-13 14:08:40,779 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:08:40,779 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:08:40,804 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dfa83519-f527-4546-a5cf-0431219e848a/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-13 14:08:40,980 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dfa83519-f527-4546-a5cf-0431219e848a/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:08:40,980 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr43REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [free_reportsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 77 more)] === [2024-11-13 14:08:40,981 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:08:40,981 INFO L85 PathProgramCache]: Analyzing trace with hash -1157660170, now seen corresponding path program 1 times [2024-11-13 14:08:40,981 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-13 14:08:40,981 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1062818650] [2024-11-13 14:08:40,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:08:40,982 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:08:40,982 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dfa83519-f527-4546-a5cf-0431219e848a/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:08:40,985 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dfa83519-f527-4546-a5cf-0431219e848a/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 14:08:40,987 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dfa83519-f527-4546-a5cf-0431219e848a/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-13 14:08:41,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:08:41,110 INFO L255 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-13 14:08:41,111 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 14:08:41,149 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:08:41,149 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 14:08:41,150 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-13 14:08:41,150 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1062818650] [2024-11-13 14:08:41,150 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1062818650] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 14:08:41,150 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 14:08:41,150 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-13 14:08:41,150 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1144549471] [2024-11-13 14:08:41,151 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 14:08:41,151 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-13 14:08:41,151 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-13 14:08:41,152 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-13 14:08:41,152 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-13 14:08:41,152 INFO L87 Difference]: Start difference. First operand 203 states and 216 transitions. Second operand has 5 states, 5 states have (on average 2.0) internal successors, (10), 4 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-13 14:08:41,218 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:08:41,219 INFO L93 Difference]: Finished difference Result 204 states and 216 transitions. [2024-11-13 14:08:41,220 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-13 14:08:41,220 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.0) internal successors, (10), 4 states have internal predecessors, (10), 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 12 [2024-11-13 14:08:41,220 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:08:41,221 INFO L225 Difference]: With dead ends: 204 [2024-11-13 14:08:41,221 INFO L226 Difference]: Without dead ends: 204 [2024-11-13 14:08:41,221 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-13 14:08:41,222 INFO L432 NwaCegarLoop]: 206 mSDtfsCounter, 106 mSDsluCounter, 501 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 111 SdHoareTripleChecker+Valid, 707 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-13 14:08:41,222 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [111 Valid, 707 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-13 14:08:41,225 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 204 states. [2024-11-13 14:08:41,238 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 204 to 203. [2024-11-13 14:08:41,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 203 states, 112 states have (on average 1.7678571428571428) internal successors, (198), 187 states have internal predecessors, (198), 8 states have call successors, (8), 6 states have call predecessors, (8), 7 states have return successors, (9), 9 states have call predecessors, (9), 8 states have call successors, (9) [2024-11-13 14:08:41,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 203 states to 203 states and 215 transitions. [2024-11-13 14:08:41,246 INFO L78 Accepts]: Start accepts. Automaton has 203 states and 215 transitions. Word has length 12 [2024-11-13 14:08:41,246 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:08:41,246 INFO L471 AbstractCegarLoop]: Abstraction has 203 states and 215 transitions. [2024-11-13 14:08:41,246 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.0) internal successors, (10), 4 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-13 14:08:41,246 INFO L276 IsEmpty]: Start isEmpty. Operand 203 states and 215 transitions. [2024-11-13 14:08:41,246 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2024-11-13 14:08:41,246 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:08:41,247 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:08:41,264 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dfa83519-f527-4546-a5cf-0431219e848a/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-11-13 14:08:41,450 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dfa83519-f527-4546-a5cf-0431219e848a/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:08:41,451 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr43REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [free_reportsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 77 more)] === [2024-11-13 14:08:41,451 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:08:41,452 INFO L85 PathProgramCache]: Analyzing trace with hash 585150165, now seen corresponding path program 1 times [2024-11-13 14:08:41,452 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-13 14:08:41,452 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1028649704] [2024-11-13 14:08:41,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:08:41,452 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:08:41,453 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dfa83519-f527-4546-a5cf-0431219e848a/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:08:41,455 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dfa83519-f527-4546-a5cf-0431219e848a/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 14:08:41,459 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dfa83519-f527-4546-a5cf-0431219e848a/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-13 14:08:41,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:08:41,580 INFO L255 TraceCheckSpWp]: Trace formula consists of 59 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-13 14:08:41,582 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 14:08:41,632 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:08:41,632 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 14:08:41,632 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-13 14:08:41,632 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1028649704] [2024-11-13 14:08:41,632 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1028649704] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 14:08:41,632 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 14:08:41,633 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-13 14:08:41,633 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1023506348] [2024-11-13 14:08:41,633 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 14:08:41,633 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-13 14:08:41,633 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-13 14:08:41,634 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-13 14:08:41,634 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-13 14:08:41,634 INFO L87 Difference]: Start difference. First operand 203 states and 215 transitions. Second operand has 5 states, 5 states have (on average 2.0) internal successors, (10), 5 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-13 14:08:41,679 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:08:41,679 INFO L93 Difference]: Finished difference Result 205 states and 217 transitions. [2024-11-13 14:08:41,680 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-13 14:08:41,680 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.0) internal successors, (10), 5 states have internal predecessors, (10), 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 12 [2024-11-13 14:08:41,680 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:08:41,681 INFO L225 Difference]: With dead ends: 205 [2024-11-13 14:08:41,681 INFO L226 Difference]: Without dead ends: 205 [2024-11-13 14:08:41,681 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-13 14:08:41,682 INFO L432 NwaCegarLoop]: 209 mSDtfsCounter, 100 mSDsluCounter, 509 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 105 SdHoareTripleChecker+Valid, 718 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-13 14:08:41,682 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [105 Valid, 718 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-13 14:08:41,683 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 205 states. [2024-11-13 14:08:41,695 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 205 to 205. [2024-11-13 14:08:41,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 205 states, 114 states have (on average 1.7543859649122806) internal successors, (200), 189 states have internal predecessors, (200), 8 states have call successors, (8), 6 states have call predecessors, (8), 7 states have return successors, (9), 9 states have call predecessors, (9), 8 states have call successors, (9) [2024-11-13 14:08:41,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 205 states to 205 states and 217 transitions. [2024-11-13 14:08:41,697 INFO L78 Accepts]: Start accepts. Automaton has 205 states and 217 transitions. Word has length 12 [2024-11-13 14:08:41,697 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:08:41,698 INFO L471 AbstractCegarLoop]: Abstraction has 205 states and 217 transitions. [2024-11-13 14:08:41,698 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.0) internal successors, (10), 5 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-13 14:08:41,698 INFO L276 IsEmpty]: Start isEmpty. Operand 205 states and 217 transitions. [2024-11-13 14:08:41,698 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2024-11-13 14:08:41,698 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:08:41,699 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:08:41,722 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dfa83519-f527-4546-a5cf-0431219e848a/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-13 14:08:41,902 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dfa83519-f527-4546-a5cf-0431219e848a/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:08:41,903 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr50ASSERT_VIOLATIONMEMORY_LEAK === [free_reportsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 77 more)] === [2024-11-13 14:08:41,903 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:08:41,903 INFO L85 PathProgramCache]: Analyzing trace with hash 959806042, now seen corresponding path program 1 times [2024-11-13 14:08:41,903 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-13 14:08:41,903 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [74229515] [2024-11-13 14:08:41,903 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:08:41,903 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:08:41,903 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dfa83519-f527-4546-a5cf-0431219e848a/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:08:41,905 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dfa83519-f527-4546-a5cf-0431219e848a/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 14:08:41,907 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dfa83519-f527-4546-a5cf-0431219e848a/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-13 14:08:42,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:08:42,002 INFO L255 TraceCheckSpWp]: Trace formula consists of 52 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-13 14:08:42,002 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 14:08:42,064 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:08:42,064 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 14:08:42,064 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-13 14:08:42,064 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [74229515] [2024-11-13 14:08:42,064 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [74229515] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 14:08:42,064 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 14:08:42,064 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-13 14:08:42,064 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1443677754] [2024-11-13 14:08:42,064 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 14:08:42,065 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-13 14:08:42,065 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-13 14:08:42,065 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-13 14:08:42,065 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-13 14:08:42,065 INFO L87 Difference]: Start difference. First operand 205 states and 217 transitions. Second operand has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 4 states have internal predecessors, (11), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-13 14:08:42,635 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:08:42,635 INFO L93 Difference]: Finished difference Result 217 states and 231 transitions. [2024-11-13 14:08:42,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-13 14:08:42,636 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 4 states have internal predecessors, (11), 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 13 [2024-11-13 14:08:42,636 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:08:42,637 INFO L225 Difference]: With dead ends: 217 [2024-11-13 14:08:42,637 INFO L226 Difference]: Without dead ends: 209 [2024-11-13 14:08:42,637 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-13 14:08:42,638 INFO L432 NwaCegarLoop]: 171 mSDtfsCounter, 51 mSDsluCounter, 207 mSDsCounter, 0 mSdLazyCounter, 209 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 52 SdHoareTripleChecker+Valid, 378 SdHoareTripleChecker+Invalid, 217 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 209 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-13 14:08:42,638 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [52 Valid, 378 Invalid, 217 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 209 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-13 14:08:42,641 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 209 states. [2024-11-13 14:08:42,651 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 209 to 199. [2024-11-13 14:08:42,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 199 states, 109 states have (on average 1.7798165137614679) internal successors, (194), 184 states have internal predecessors, (194), 8 states have call successors, (8), 6 states have call predecessors, (8), 6 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2024-11-13 14:08:42,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 199 states to 199 states and 210 transitions. [2024-11-13 14:08:42,659 INFO L78 Accepts]: Start accepts. Automaton has 199 states and 210 transitions. Word has length 13 [2024-11-13 14:08:42,659 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:08:42,659 INFO L471 AbstractCegarLoop]: Abstraction has 199 states and 210 transitions. [2024-11-13 14:08:42,659 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 4 states have internal predecessors, (11), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-13 14:08:42,659 INFO L276 IsEmpty]: Start isEmpty. Operand 199 states and 210 transitions. [2024-11-13 14:08:42,659 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2024-11-13 14:08:42,660 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:08:42,660 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:08:42,684 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dfa83519-f527-4546-a5cf-0431219e848a/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-11-13 14:08:42,860 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dfa83519-f527-4546-a5cf-0431219e848a/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:08:42,860 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [free_reportsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 77 more)] === [2024-11-13 14:08:42,861 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:08:42,861 INFO L85 PathProgramCache]: Analyzing trace with hash -998438114, now seen corresponding path program 1 times [2024-11-13 14:08:42,861 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-13 14:08:42,861 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1897131065] [2024-11-13 14:08:42,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:08:42,861 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:08:42,861 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dfa83519-f527-4546-a5cf-0431219e848a/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:08:42,863 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dfa83519-f527-4546-a5cf-0431219e848a/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 14:08:42,864 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dfa83519-f527-4546-a5cf-0431219e848a/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-13 14:08:42,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:08:42,987 INFO L255 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-13 14:08:42,989 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 14:08:43,090 WARN L873 $PredicateComparison]: unable to prove that (exists ((|ldv_malloc_#res.base| (_ BitVec 32))) (and (= (store |c_old(#valid)| |ldv_malloc_#res.base| (select |c_#valid| |ldv_malloc_#res.base|)) |c_#valid|) (= (_ bv0 1) (select |c_old(#valid)| |ldv_malloc_#res.base|)))) is different from true [2024-11-13 14:08:43,194 INFO L349 Elim1Store]: treesize reduction 24, result has 33.3 percent of original size [2024-11-13 14:08:43,194 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 21 treesize of output 20 [2024-11-13 14:08:43,274 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:08:43,275 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 14:08:43,275 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-13 14:08:43,275 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1897131065] [2024-11-13 14:08:43,275 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1897131065] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 14:08:43,275 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 14:08:43,275 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-13 14:08:43,275 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [271400128] [2024-11-13 14:08:43,276 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 14:08:43,276 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-13 14:08:43,276 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-13 14:08:43,277 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-13 14:08:43,277 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=20, Unknown=1, NotChecked=8, Total=42 [2024-11-13 14:08:43,277 INFO L87 Difference]: Start difference. First operand 199 states and 210 transitions. Second operand has 7 states, 6 states have (on average 2.0) internal successors, (12), 6 states have internal predecessors, (12), 1 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-13 14:08:44,311 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:08:44,312 INFO L93 Difference]: Finished difference Result 250 states and 264 transitions. [2024-11-13 14:08:44,313 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-13 14:08:44,313 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 2.0) internal successors, (12), 6 states have internal predecessors, (12), 1 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 16 [2024-11-13 14:08:44,313 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:08:44,316 INFO L225 Difference]: With dead ends: 250 [2024-11-13 14:08:44,316 INFO L226 Difference]: Without dead ends: 250 [2024-11-13 14:08:44,317 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=48, Unknown=1, NotChecked=14, Total=90 [2024-11-13 14:08:44,318 INFO L432 NwaCegarLoop]: 134 mSDtfsCounter, 210 mSDsluCounter, 278 mSDsCounter, 0 mSdLazyCounter, 392 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 212 SdHoareTripleChecker+Valid, 412 SdHoareTripleChecker+Invalid, 672 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 392 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 262 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-11-13 14:08:44,319 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [212 Valid, 412 Invalid, 672 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 392 Invalid, 0 Unknown, 262 Unchecked, 0.9s Time] [2024-11-13 14:08:44,320 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 250 states. [2024-11-13 14:08:44,328 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 250 to 209. [2024-11-13 14:08:44,328 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 209 states, 118 states have (on average 1.7627118644067796) internal successors, (208), 193 states have internal predecessors, (208), 8 states have call successors, (8), 7 states have call predecessors, (8), 8 states have return successors, (10), 8 states have call predecessors, (10), 8 states have call successors, (10) [2024-11-13 14:08:44,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 209 states to 209 states and 226 transitions. [2024-11-13 14:08:44,330 INFO L78 Accepts]: Start accepts. Automaton has 209 states and 226 transitions. Word has length 16 [2024-11-13 14:08:44,330 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:08:44,331 INFO L471 AbstractCegarLoop]: Abstraction has 209 states and 226 transitions. [2024-11-13 14:08:44,331 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 2.0) internal successors, (12), 6 states have internal predecessors, (12), 1 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-13 14:08:44,331 INFO L276 IsEmpty]: Start isEmpty. Operand 209 states and 226 transitions. [2024-11-13 14:08:44,331 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2024-11-13 14:08:44,332 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:08:44,332 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:08:44,356 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dfa83519-f527-4546-a5cf-0431219e848a/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-13 14:08:44,535 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dfa83519-f527-4546-a5cf-0431219e848a/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:08:44,536 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [free_reportsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 77 more)] === [2024-11-13 14:08:44,537 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:08:44,537 INFO L85 PathProgramCache]: Analyzing trace with hash -998438113, now seen corresponding path program 1 times [2024-11-13 14:08:44,537 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-13 14:08:44,537 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1799331251] [2024-11-13 14:08:44,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:08:44,537 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:08:44,537 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dfa83519-f527-4546-a5cf-0431219e848a/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:08:44,540 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dfa83519-f527-4546-a5cf-0431219e848a/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 14:08:44,542 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dfa83519-f527-4546-a5cf-0431219e848a/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-13 14:08:44,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:08:44,671 INFO L255 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-11-13 14:08:44,673 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 14:08:44,833 WARN L873 $PredicateComparison]: unable to prove that (exists ((|ldv_malloc_#res.base| (_ BitVec 32))) (and (= (store |c_old(#length)| |ldv_malloc_#res.base| (select |c_#length| |ldv_malloc_#res.base|)) |c_#length|) (= (_ bv0 1) (select |c_old(#valid)| |ldv_malloc_#res.base|)))) is different from true [2024-11-13 14:08:44,881 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 14:08:44,882 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 9 [2024-11-13 14:08:44,978 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:08:44,979 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 14:08:44,979 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-13 14:08:44,979 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1799331251] [2024-11-13 14:08:44,979 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1799331251] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 14:08:44,979 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 14:08:44,979 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-13 14:08:44,979 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1636113107] [2024-11-13 14:08:44,980 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 14:08:44,980 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-13 14:08:44,980 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-13 14:08:44,981 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-13 14:08:44,981 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=28, Unknown=1, NotChecked=10, Total=56 [2024-11-13 14:08:44,981 INFO L87 Difference]: Start difference. First operand 209 states and 226 transitions. Second operand has 8 states, 6 states have (on average 2.0) internal successors, (12), 7 states have internal predecessors, (12), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-13 14:08:46,614 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:08:46,615 INFO L93 Difference]: Finished difference Result 249 states and 263 transitions. [2024-11-13 14:08:46,615 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-13 14:08:46,616 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 6 states have (on average 2.0) internal successors, (12), 7 states have internal predecessors, (12), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) Word has length 16 [2024-11-13 14:08:46,616 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:08:46,617 INFO L225 Difference]: With dead ends: 249 [2024-11-13 14:08:46,617 INFO L226 Difference]: Without dead ends: 249 [2024-11-13 14:08:46,618 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=37, Invalid=76, Unknown=1, NotChecked=18, Total=132 [2024-11-13 14:08:46,618 INFO L432 NwaCegarLoop]: 85 mSDtfsCounter, 300 mSDsluCounter, 223 mSDsCounter, 0 mSdLazyCounter, 650 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 303 SdHoareTripleChecker+Valid, 308 SdHoareTripleChecker+Invalid, 934 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 650 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 261 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2024-11-13 14:08:46,618 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [303 Valid, 308 Invalid, 934 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 650 Invalid, 0 Unknown, 261 Unchecked, 1.5s Time] [2024-11-13 14:08:46,621 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 249 states. [2024-11-13 14:08:46,628 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 249 to 208. [2024-11-13 14:08:46,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 208 states, 118 states have (on average 1.7542372881355932) internal successors, (207), 192 states have internal predecessors, (207), 8 states have call successors, (8), 7 states have call predecessors, (8), 8 states have return successors, (10), 8 states have call predecessors, (10), 8 states have call successors, (10) [2024-11-13 14:08:46,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 208 states to 208 states and 225 transitions. [2024-11-13 14:08:46,633 INFO L78 Accepts]: Start accepts. Automaton has 208 states and 225 transitions. Word has length 16 [2024-11-13 14:08:46,633 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:08:46,633 INFO L471 AbstractCegarLoop]: Abstraction has 208 states and 225 transitions. [2024-11-13 14:08:46,633 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 6 states have (on average 2.0) internal successors, (12), 7 states have internal predecessors, (12), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-13 14:08:46,633 INFO L276 IsEmpty]: Start isEmpty. Operand 208 states and 225 transitions. [2024-11-13 14:08:46,634 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2024-11-13 14:08:46,634 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:08:46,635 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:08:46,660 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dfa83519-f527-4546-a5cf-0431219e848a/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2024-11-13 14:08:46,835 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dfa83519-f527-4546-a5cf-0431219e848a/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:08:46,835 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [free_reportsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 77 more)] === [2024-11-13 14:08:46,836 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:08:46,836 INFO L85 PathProgramCache]: Analyzing trace with hash -453598238, now seen corresponding path program 1 times [2024-11-13 14:08:46,836 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-13 14:08:46,836 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1036853555] [2024-11-13 14:08:46,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:08:46,837 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:08:46,837 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dfa83519-f527-4546-a5cf-0431219e848a/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:08:46,839 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dfa83519-f527-4546-a5cf-0431219e848a/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 14:08:46,840 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dfa83519-f527-4546-a5cf-0431219e848a/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-13 14:08:46,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:08:46,995 INFO L255 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-13 14:08:46,997 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 14:08:47,007 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2024-11-13 14:08:47,069 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:08:47,069 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 14:08:47,070 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-13 14:08:47,070 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1036853555] [2024-11-13 14:08:47,070 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1036853555] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 14:08:47,070 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 14:08:47,070 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-13 14:08:47,071 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1361306426] [2024-11-13 14:08:47,071 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 14:08:47,071 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-13 14:08:47,071 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-13 14:08:47,072 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-13 14:08:47,072 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-13 14:08:47,073 INFO L87 Difference]: Start difference. First operand 208 states and 225 transitions. Second operand has 6 states, 5 states have (on average 3.8) internal successors, (19), 5 states have internal predecessors, (19), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2024-11-13 14:08:47,991 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:08:47,991 INFO L93 Difference]: Finished difference Result 265 states and 290 transitions. [2024-11-13 14:08:47,992 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-13 14:08:47,992 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.8) internal successors, (19), 5 states have internal predecessors, (19), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 25 [2024-11-13 14:08:47,992 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:08:47,994 INFO L225 Difference]: With dead ends: 265 [2024-11-13 14:08:47,994 INFO L226 Difference]: Without dead ends: 265 [2024-11-13 14:08:47,994 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-13 14:08:47,995 INFO L432 NwaCegarLoop]: 170 mSDtfsCounter, 67 mSDsluCounter, 461 mSDsCounter, 0 mSdLazyCounter, 386 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 67 SdHoareTripleChecker+Valid, 631 SdHoareTripleChecker+Invalid, 388 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 386 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-11-13 14:08:47,995 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [67 Valid, 631 Invalid, 388 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 386 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-11-13 14:08:47,996 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 265 states. [2024-11-13 14:08:48,003 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 265 to 237. [2024-11-13 14:08:48,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 237 states, 149 states have (on average 1.7718120805369129) internal successors, (264), 221 states have internal predecessors, (264), 8 states have call successors, (8), 7 states have call predecessors, (8), 8 states have return successors, (10), 8 states have call predecessors, (10), 8 states have call successors, (10) [2024-11-13 14:08:48,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 237 states to 237 states and 282 transitions. [2024-11-13 14:08:48,006 INFO L78 Accepts]: Start accepts. Automaton has 237 states and 282 transitions. Word has length 25 [2024-11-13 14:08:48,006 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:08:48,006 INFO L471 AbstractCegarLoop]: Abstraction has 237 states and 282 transitions. [2024-11-13 14:08:48,007 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 3.8) internal successors, (19), 5 states have internal predecessors, (19), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2024-11-13 14:08:48,007 INFO L276 IsEmpty]: Start isEmpty. Operand 237 states and 282 transitions. [2024-11-13 14:08:48,007 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2024-11-13 14:08:48,008 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:08:48,008 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:08:48,030 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dfa83519-f527-4546-a5cf-0431219e848a/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-11-13 14:08:48,211 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dfa83519-f527-4546-a5cf-0431219e848a/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:08:48,212 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [free_reportsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 77 more)] === [2024-11-13 14:08:48,212 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:08:48,212 INFO L85 PathProgramCache]: Analyzing trace with hash -453598237, now seen corresponding path program 1 times [2024-11-13 14:08:48,213 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-13 14:08:48,213 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1308903665] [2024-11-13 14:08:48,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:08:48,213 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:08:48,213 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dfa83519-f527-4546-a5cf-0431219e848a/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:08:48,215 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dfa83519-f527-4546-a5cf-0431219e848a/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 14:08:48,216 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dfa83519-f527-4546-a5cf-0431219e848a/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-13 14:08:48,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:08:48,391 INFO L255 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-13 14:08:48,394 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 14:08:48,406 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2024-11-13 14:08:48,526 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:08:48,526 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 14:08:48,526 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-13 14:08:48,526 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1308903665] [2024-11-13 14:08:48,526 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1308903665] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 14:08:48,526 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 14:08:48,527 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-13 14:08:48,527 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1244815855] [2024-11-13 14:08:48,527 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 14:08:48,527 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-13 14:08:48,527 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-13 14:08:48,528 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-13 14:08:48,528 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-13 14:08:48,528 INFO L87 Difference]: Start difference. First operand 237 states and 282 transitions. Second operand has 6 states, 5 states have (on average 3.8) internal successors, (19), 5 states have internal predecessors, (19), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2024-11-13 14:08:49,673 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:08:49,673 INFO L93 Difference]: Finished difference Result 263 states and 288 transitions. [2024-11-13 14:08:49,674 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-13 14:08:49,674 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.8) internal successors, (19), 5 states have internal predecessors, (19), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 25 [2024-11-13 14:08:49,677 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:08:49,679 INFO L225 Difference]: With dead ends: 263 [2024-11-13 14:08:49,679 INFO L226 Difference]: Without dead ends: 263 [2024-11-13 14:08:49,679 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-13 14:08:49,680 INFO L432 NwaCegarLoop]: 169 mSDtfsCounter, 64 mSDsluCounter, 497 mSDsCounter, 0 mSdLazyCounter, 341 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 65 SdHoareTripleChecker+Valid, 666 SdHoareTripleChecker+Invalid, 344 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 341 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-11-13 14:08:49,683 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [65 Valid, 666 Invalid, 344 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 341 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-11-13 14:08:49,684 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 263 states. [2024-11-13 14:08:49,694 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 263 to 238. [2024-11-13 14:08:49,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 238 states, 151 states have (on average 1.7549668874172186) internal successors, (265), 221 states have internal predecessors, (265), 9 states have call successors, (9), 7 states have call predecessors, (9), 8 states have return successors, (12), 9 states have call predecessors, (12), 9 states have call successors, (12) [2024-11-13 14:08:49,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 238 states to 238 states and 286 transitions. [2024-11-13 14:08:49,698 INFO L78 Accepts]: Start accepts. Automaton has 238 states and 286 transitions. Word has length 25 [2024-11-13 14:08:49,698 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:08:49,699 INFO L471 AbstractCegarLoop]: Abstraction has 238 states and 286 transitions. [2024-11-13 14:08:49,699 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 3.8) internal successors, (19), 5 states have internal predecessors, (19), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2024-11-13 14:08:49,699 INFO L276 IsEmpty]: Start isEmpty. Operand 238 states and 286 transitions. [2024-11-13 14:08:49,700 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2024-11-13 14:08:49,701 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:08:49,701 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:08:49,720 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dfa83519-f527-4546-a5cf-0431219e848a/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-11-13 14:08:49,901 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dfa83519-f527-4546-a5cf-0431219e848a/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:08:49,902 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr40ASSERT_VIOLATIONMEMORY_FREE === [free_reportsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 77 more)] === [2024-11-13 14:08:49,902 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:08:49,902 INFO L85 PathProgramCache]: Analyzing trace with hash -2116140858, now seen corresponding path program 1 times [2024-11-13 14:08:49,902 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-13 14:08:49,903 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1674603512] [2024-11-13 14:08:49,903 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:08:49,903 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:08:49,903 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dfa83519-f527-4546-a5cf-0431219e848a/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:08:49,907 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dfa83519-f527-4546-a5cf-0431219e848a/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 14:08:49,909 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dfa83519-f527-4546-a5cf-0431219e848a/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-13 14:08:50,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:08:50,089 INFO L255 TraceCheckSpWp]: Trace formula consists of 153 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-13 14:08:50,092 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 14:08:50,157 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:08:50,157 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 14:08:50,157 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-13 14:08:50,157 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1674603512] [2024-11-13 14:08:50,157 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1674603512] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 14:08:50,157 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 14:08:50,158 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-13 14:08:50,158 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1280769348] [2024-11-13 14:08:50,158 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 14:08:50,158 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-13 14:08:50,158 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-13 14:08:50,159 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-13 14:08:50,159 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-13 14:08:50,159 INFO L87 Difference]: Start difference. First operand 238 states and 286 transitions. Second operand has 5 states, 4 states have (on average 5.25) internal successors, (21), 4 states have internal predecessors, (21), 2 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-13 14:08:50,202 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:08:50,202 INFO L93 Difference]: Finished difference Result 238 states and 286 transitions. [2024-11-13 14:08:50,203 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-13 14:08:50,203 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 5.25) internal successors, (21), 4 states have internal predecessors, (21), 2 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 27 [2024-11-13 14:08:50,203 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:08:50,207 INFO L225 Difference]: With dead ends: 238 [2024-11-13 14:08:50,208 INFO L226 Difference]: Without dead ends: 238 [2024-11-13 14:08:50,208 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-13 14:08:50,208 INFO L432 NwaCegarLoop]: 199 mSDtfsCounter, 90 mSDsluCounter, 490 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 93 SdHoareTripleChecker+Valid, 689 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-13 14:08:50,209 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [93 Valid, 689 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-13 14:08:50,210 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 238 states. [2024-11-13 14:08:50,220 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 238 to 237. [2024-11-13 14:08:50,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 237 states, 151 states have (on average 1.7483443708609272) internal successors, (264), 220 states have internal predecessors, (264), 9 states have call successors, (9), 7 states have call predecessors, (9), 8 states have return successors, (12), 9 states have call predecessors, (12), 9 states have call successors, (12) [2024-11-13 14:08:50,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 237 states to 237 states and 285 transitions. [2024-11-13 14:08:50,223 INFO L78 Accepts]: Start accepts. Automaton has 237 states and 285 transitions. Word has length 27 [2024-11-13 14:08:50,224 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:08:50,224 INFO L471 AbstractCegarLoop]: Abstraction has 237 states and 285 transitions. [2024-11-13 14:08:50,224 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 5.25) internal successors, (21), 4 states have internal predecessors, (21), 2 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-13 14:08:50,224 INFO L276 IsEmpty]: Start isEmpty. Operand 237 states and 285 transitions. [2024-11-13 14:08:50,225 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2024-11-13 14:08:50,225 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:08:50,225 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:08:50,252 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dfa83519-f527-4546-a5cf-0431219e848a/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2024-11-13 14:08:50,426 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dfa83519-f527-4546-a5cf-0431219e848a/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:08:50,426 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr41ASSERT_VIOLATIONMEMORY_FREE === [free_reportsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 77 more)] === [2024-11-13 14:08:50,427 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:08:50,427 INFO L85 PathProgramCache]: Analyzing trace with hash -1175856888, now seen corresponding path program 1 times [2024-11-13 14:08:50,427 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-13 14:08:50,428 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [600605402] [2024-11-13 14:08:50,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:08:50,428 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:08:50,428 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dfa83519-f527-4546-a5cf-0431219e848a/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:08:50,430 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dfa83519-f527-4546-a5cf-0431219e848a/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 14:08:50,434 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dfa83519-f527-4546-a5cf-0431219e848a/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-11-13 14:08:50,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:08:50,605 INFO L255 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-13 14:08:50,609 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 14:08:50,667 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:08:50,668 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 14:08:50,668 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-13 14:08:50,668 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [600605402] [2024-11-13 14:08:50,668 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [600605402] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 14:08:50,668 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 14:08:50,668 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-13 14:08:50,668 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1756142098] [2024-11-13 14:08:50,668 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 14:08:50,668 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-13 14:08:50,668 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-13 14:08:50,669 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-13 14:08:50,669 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-13 14:08:50,669 INFO L87 Difference]: Start difference. First operand 237 states and 285 transitions. Second operand has 6 states, 6 states have (on average 3.6666666666666665) internal successors, (22), 5 states have internal predecessors, (22), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2024-11-13 14:08:50,789 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:08:50,789 INFO L93 Difference]: Finished difference Result 237 states and 284 transitions. [2024-11-13 14:08:50,789 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-13 14:08:50,789 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.6666666666666665) internal successors, (22), 5 states have internal predecessors, (22), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 28 [2024-11-13 14:08:50,790 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:08:50,791 INFO L225 Difference]: With dead ends: 237 [2024-11-13 14:08:50,791 INFO L226 Difference]: Without dead ends: 237 [2024-11-13 14:08:50,792 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-13 14:08:50,792 INFO L432 NwaCegarLoop]: 188 mSDtfsCounter, 83 mSDsluCounter, 665 mSDsCounter, 0 mSdLazyCounter, 66 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 86 SdHoareTripleChecker+Valid, 853 SdHoareTripleChecker+Invalid, 66 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 66 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-13 14:08:50,793 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [86 Valid, 853 Invalid, 66 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 66 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-13 14:08:50,794 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 237 states. [2024-11-13 14:08:50,800 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 237 to 237. [2024-11-13 14:08:50,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 237 states, 151 states have (on average 1.7417218543046358) internal successors, (263), 220 states have internal predecessors, (263), 9 states have call successors, (9), 7 states have call predecessors, (9), 8 states have return successors, (12), 9 states have call predecessors, (12), 9 states have call successors, (12) [2024-11-13 14:08:50,803 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 237 states to 237 states and 284 transitions. [2024-11-13 14:08:50,803 INFO L78 Accepts]: Start accepts. Automaton has 237 states and 284 transitions. Word has length 28 [2024-11-13 14:08:50,803 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:08:50,803 INFO L471 AbstractCegarLoop]: Abstraction has 237 states and 284 transitions. [2024-11-13 14:08:50,804 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.6666666666666665) internal successors, (22), 5 states have internal predecessors, (22), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2024-11-13 14:08:50,804 INFO L276 IsEmpty]: Start isEmpty. Operand 237 states and 284 transitions. [2024-11-13 14:08:50,805 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2024-11-13 14:08:50,805 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:08:50,805 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:08:50,831 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dfa83519-f527-4546-a5cf-0431219e848a/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2024-11-13 14:08:51,005 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dfa83519-f527-4546-a5cf-0431219e848a/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:08:51,006 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [free_reportsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 77 more)] === [2024-11-13 14:08:51,006 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:08:51,006 INFO L85 PathProgramCache]: Analyzing trace with hash -1034019605, now seen corresponding path program 1 times [2024-11-13 14:08:51,007 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-13 14:08:51,007 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1616370006] [2024-11-13 14:08:51,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:08:51,007 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:08:51,007 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dfa83519-f527-4546-a5cf-0431219e848a/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:08:51,010 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dfa83519-f527-4546-a5cf-0431219e848a/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 14:08:51,012 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dfa83519-f527-4546-a5cf-0431219e848a/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-11-13 14:08:51,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:08:51,211 INFO L255 TraceCheckSpWp]: Trace formula consists of 192 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-13 14:08:51,214 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 14:08:51,221 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2024-11-13 14:08:51,268 WARN L873 $PredicateComparison]: unable to prove that (exists ((|ldv_zalloc_#t~malloc13#1.base| (_ BitVec 32))) (= (store |c_old(#valid)| |ldv_zalloc_#t~malloc13#1.base| (_ bv1 1)) |c_#valid|)) is different from true [2024-11-13 14:08:51,306 INFO L349 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2024-11-13 14:08:51,307 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 20 [2024-11-13 14:08:51,369 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:08:51,370 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 14:08:51,370 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-13 14:08:51,370 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1616370006] [2024-11-13 14:08:51,370 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1616370006] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 14:08:51,370 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 14:08:51,370 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-13 14:08:51,370 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1445727745] [2024-11-13 14:08:51,371 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 14:08:51,371 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-13 14:08:51,371 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-13 14:08:51,372 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-13 14:08:51,373 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=14, Unknown=1, NotChecked=6, Total=30 [2024-11-13 14:08:51,373 INFO L87 Difference]: Start difference. First operand 237 states and 284 transitions. Second operand has 6 states, 5 states have (on average 5.4) internal successors, (27), 5 states have internal predecessors, (27), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-13 14:08:52,279 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:08:52,280 INFO L93 Difference]: Finished difference Result 281 states and 330 transitions. [2024-11-13 14:08:52,281 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-13 14:08:52,281 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 5.4) internal successors, (27), 5 states have internal predecessors, (27), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 33 [2024-11-13 14:08:52,282 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:08:52,283 INFO L225 Difference]: With dead ends: 281 [2024-11-13 14:08:52,283 INFO L226 Difference]: Without dead ends: 281 [2024-11-13 14:08:52,284 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 27 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=20, Unknown=1, NotChecked=8, Total=42 [2024-11-13 14:08:52,284 INFO L432 NwaCegarLoop]: 123 mSDtfsCounter, 127 mSDsluCounter, 243 mSDsCounter, 0 mSdLazyCounter, 330 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 128 SdHoareTripleChecker+Valid, 366 SdHoareTripleChecker+Invalid, 615 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 330 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 266 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-11-13 14:08:52,285 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [128 Valid, 366 Invalid, 615 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 330 Invalid, 0 Unknown, 266 Unchecked, 0.9s Time] [2024-11-13 14:08:52,288 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 281 states. [2024-11-13 14:08:52,298 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 281 to 251. [2024-11-13 14:08:52,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 251 states, 168 states have (on average 1.6666666666666667) internal successors, (280), 234 states have internal predecessors, (280), 9 states have call successors, (9), 7 states have call predecessors, (9), 8 states have return successors, (12), 9 states have call predecessors, (12), 9 states have call successors, (12) [2024-11-13 14:08:52,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 251 states to 251 states and 301 transitions. [2024-11-13 14:08:52,301 INFO L78 Accepts]: Start accepts. Automaton has 251 states and 301 transitions. Word has length 33 [2024-11-13 14:08:52,302 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:08:52,302 INFO L471 AbstractCegarLoop]: Abstraction has 251 states and 301 transitions. [2024-11-13 14:08:52,302 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 5.4) internal successors, (27), 5 states have internal predecessors, (27), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-13 14:08:52,302 INFO L276 IsEmpty]: Start isEmpty. Operand 251 states and 301 transitions. [2024-11-13 14:08:52,303 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2024-11-13 14:08:52,304 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:08:52,304 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:08:52,331 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dfa83519-f527-4546-a5cf-0431219e848a/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2024-11-13 14:08:52,504 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dfa83519-f527-4546-a5cf-0431219e848a/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:08:52,505 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [free_reportsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 77 more)] === [2024-11-13 14:08:52,505 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:08:52,505 INFO L85 PathProgramCache]: Analyzing trace with hash -1034019604, now seen corresponding path program 1 times [2024-11-13 14:08:52,506 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-13 14:08:52,506 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1836706270] [2024-11-13 14:08:52,506 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:08:52,506 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:08:52,506 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dfa83519-f527-4546-a5cf-0431219e848a/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:08:52,508 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dfa83519-f527-4546-a5cf-0431219e848a/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 14:08:52,512 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dfa83519-f527-4546-a5cf-0431219e848a/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-11-13 14:08:52,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:08:52,716 INFO L255 TraceCheckSpWp]: Trace formula consists of 192 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-13 14:08:52,719 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 14:08:52,752 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 5 [2024-11-13 14:08:52,790 WARN L873 $PredicateComparison]: unable to prove that (exists ((|ldv_zalloc_#t~malloc13#1.base| (_ BitVec 32))) (= (store |c_old(#length)| |ldv_zalloc_#t~malloc13#1.base| |c_ldv_zalloc_#in~size#1|) |c_#length|)) is different from true [2024-11-13 14:08:52,839 INFO L349 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2024-11-13 14:08:52,839 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 [2024-11-13 14:08:53,207 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:08:53,207 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 14:08:53,208 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-13 14:08:53,209 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1836706270] [2024-11-13 14:08:53,209 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1836706270] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 14:08:53,209 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 14:08:53,209 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-13 14:08:53,209 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1826107929] [2024-11-13 14:08:53,210 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 14:08:53,210 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-13 14:08:53,210 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-13 14:08:53,211 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-13 14:08:53,211 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=22, Unknown=1, NotChecked=8, Total=42 [2024-11-13 14:08:53,212 INFO L87 Difference]: Start difference. First operand 251 states and 301 transitions. Second operand has 7 states, 5 states have (on average 5.4) internal successors, (27), 6 states have internal predecessors, (27), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-13 14:08:54,782 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:08:54,782 INFO L93 Difference]: Finished difference Result 274 states and 305 transitions. [2024-11-13 14:08:54,783 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-13 14:08:54,783 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 5 states have (on average 5.4) internal successors, (27), 6 states have internal predecessors, (27), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 33 [2024-11-13 14:08:54,784 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:08:54,785 INFO L225 Difference]: With dead ends: 274 [2024-11-13 14:08:54,785 INFO L226 Difference]: Without dead ends: 274 [2024-11-13 14:08:54,785 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=30, Unknown=1, NotChecked=10, Total=56 [2024-11-13 14:08:54,786 INFO L432 NwaCegarLoop]: 109 mSDtfsCounter, 123 mSDsluCounter, 330 mSDsCounter, 0 mSdLazyCounter, 462 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 125 SdHoareTripleChecker+Valid, 439 SdHoareTripleChecker+Invalid, 753 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 462 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 281 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2024-11-13 14:08:54,787 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [125 Valid, 439 Invalid, 753 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 462 Invalid, 0 Unknown, 281 Unchecked, 1.5s Time] [2024-11-13 14:08:54,787 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 274 states. [2024-11-13 14:08:54,795 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 274 to 251. [2024-11-13 14:08:54,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 251 states, 168 states have (on average 1.6488095238095237) internal successors, (277), 234 states have internal predecessors, (277), 9 states have call successors, (9), 7 states have call predecessors, (9), 8 states have return successors, (12), 9 states have call predecessors, (12), 9 states have call successors, (12) [2024-11-13 14:08:54,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 251 states to 251 states and 298 transitions. [2024-11-13 14:08:54,797 INFO L78 Accepts]: Start accepts. Automaton has 251 states and 298 transitions. Word has length 33 [2024-11-13 14:08:54,798 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:08:54,798 INFO L471 AbstractCegarLoop]: Abstraction has 251 states and 298 transitions. [2024-11-13 14:08:54,798 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 5 states have (on average 5.4) internal successors, (27), 6 states have internal predecessors, (27), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-13 14:08:54,798 INFO L276 IsEmpty]: Start isEmpty. Operand 251 states and 298 transitions. [2024-11-13 14:08:54,799 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2024-11-13 14:08:54,799 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:08:54,799 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:08:54,826 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dfa83519-f527-4546-a5cf-0431219e848a/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2024-11-13 14:08:55,000 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dfa83519-f527-4546-a5cf-0431219e848a/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:08:55,000 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr33ASSERT_VIOLATIONMEMORY_FREE === [free_reportsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 77 more)] === [2024-11-13 14:08:55,008 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:08:55,009 INFO L85 PathProgramCache]: Analyzing trace with hash -973827945, now seen corresponding path program 1 times [2024-11-13 14:08:55,009 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-13 14:08:55,009 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1373008088] [2024-11-13 14:08:55,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:08:55,009 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:08:55,010 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dfa83519-f527-4546-a5cf-0431219e848a/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:08:55,012 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dfa83519-f527-4546-a5cf-0431219e848a/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 14:08:55,013 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dfa83519-f527-4546-a5cf-0431219e848a/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-11-13 14:08:55,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:08:55,221 INFO L255 TraceCheckSpWp]: Trace formula consists of 196 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-13 14:08:55,223 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 14:08:55,332 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:08:55,332 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 14:08:55,332 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-13 14:08:55,332 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1373008088] [2024-11-13 14:08:55,332 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1373008088] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 14:08:55,332 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 14:08:55,332 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-13 14:08:55,332 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [553802835] [2024-11-13 14:08:55,332 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 14:08:55,333 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-13 14:08:55,333 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-13 14:08:55,333 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-13 14:08:55,334 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-13 14:08:55,334 INFO L87 Difference]: Start difference. First operand 251 states and 298 transitions. Second operand has 6 states, 5 states have (on average 6.0) internal successors, (30), 5 states have internal predecessors, (30), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2024-11-13 14:08:55,586 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:08:55,586 INFO L93 Difference]: Finished difference Result 249 states and 295 transitions. [2024-11-13 14:08:55,588 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-13 14:08:55,588 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 6.0) internal successors, (30), 5 states have internal predecessors, (30), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 36 [2024-11-13 14:08:55,589 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:08:55,590 INFO L225 Difference]: With dead ends: 249 [2024-11-13 14:08:55,590 INFO L226 Difference]: Without dead ends: 249 [2024-11-13 14:08:55,590 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-13 14:08:55,591 INFO L432 NwaCegarLoop]: 184 mSDtfsCounter, 68 mSDsluCounter, 595 mSDsCounter, 0 mSdLazyCounter, 118 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 71 SdHoareTripleChecker+Valid, 779 SdHoareTripleChecker+Invalid, 119 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 118 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-13 14:08:55,595 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [71 Valid, 779 Invalid, 119 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 118 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-13 14:08:55,596 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 249 states. [2024-11-13 14:08:55,608 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 249 to 249. [2024-11-13 14:08:55,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 249 states, 168 states have (on average 1.630952380952381) internal successors, (274), 232 states have internal predecessors, (274), 9 states have call successors, (9), 7 states have call predecessors, (9), 8 states have return successors, (12), 9 states have call predecessors, (12), 9 states have call successors, (12) [2024-11-13 14:08:55,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 249 states to 249 states and 295 transitions. [2024-11-13 14:08:55,611 INFO L78 Accepts]: Start accepts. Automaton has 249 states and 295 transitions. Word has length 36 [2024-11-13 14:08:55,612 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:08:55,612 INFO L471 AbstractCegarLoop]: Abstraction has 249 states and 295 transitions. [2024-11-13 14:08:55,612 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 6.0) internal successors, (30), 5 states have internal predecessors, (30), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2024-11-13 14:08:55,612 INFO L276 IsEmpty]: Start isEmpty. Operand 249 states and 295 transitions. [2024-11-13 14:08:55,613 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2024-11-13 14:08:55,613 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:08:55,613 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:08:55,642 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dfa83519-f527-4546-a5cf-0431219e848a/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2024-11-13 14:08:55,818 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dfa83519-f527-4546-a5cf-0431219e848a/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:08:55,819 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr16REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [free_reportsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 77 more)] === [2024-11-13 14:08:55,820 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:08:55,820 INFO L85 PathProgramCache]: Analyzing trace with hash -973828036, now seen corresponding path program 1 times [2024-11-13 14:08:55,820 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-13 14:08:55,820 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [522754163] [2024-11-13 14:08:55,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:08:55,821 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:08:55,821 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dfa83519-f527-4546-a5cf-0431219e848a/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:08:55,823 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dfa83519-f527-4546-a5cf-0431219e848a/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 14:08:55,826 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dfa83519-f527-4546-a5cf-0431219e848a/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2024-11-13 14:08:56,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:08:56,027 INFO L255 TraceCheckSpWp]: Trace formula consists of 200 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-13 14:08:56,028 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 14:08:56,050 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:08:56,051 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 14:08:56,051 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-13 14:08:56,051 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [522754163] [2024-11-13 14:08:56,051 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [522754163] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 14:08:56,051 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 14:08:56,051 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-13 14:08:56,051 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [414350406] [2024-11-13 14:08:56,052 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 14:08:56,052 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-13 14:08:56,052 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-13 14:08:56,053 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-13 14:08:56,053 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-13 14:08:56,053 INFO L87 Difference]: Start difference. First operand 249 states and 295 transitions. Second operand has 4 states, 4 states have (on average 7.5) internal successors, (30), 4 states have internal predecessors, (30), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2024-11-13 14:08:56,079 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:08:56,079 INFO L93 Difference]: Finished difference Result 255 states and 301 transitions. [2024-11-13 14:08:56,079 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-13 14:08:56,080 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.5) internal successors, (30), 4 states have internal predecessors, (30), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 36 [2024-11-13 14:08:56,080 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:08:56,081 INFO L225 Difference]: With dead ends: 255 [2024-11-13 14:08:56,081 INFO L226 Difference]: Without dead ends: 255 [2024-11-13 14:08:56,081 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-13 14:08:56,082 INFO L432 NwaCegarLoop]: 195 mSDtfsCounter, 0 mSDsluCounter, 384 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 579 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-13 14:08:56,082 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 579 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-13 14:08:56,083 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 255 states. [2024-11-13 14:08:56,089 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 255 to 253. [2024-11-13 14:08:56,090 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 253 states, 172 states have (on average 1.6162790697674418) internal successors, (278), 236 states have internal predecessors, (278), 9 states have call successors, (9), 7 states have call predecessors, (9), 8 states have return successors, (12), 9 states have call predecessors, (12), 9 states have call successors, (12) [2024-11-13 14:08:56,106 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 253 states to 253 states and 299 transitions. [2024-11-13 14:08:56,106 INFO L78 Accepts]: Start accepts. Automaton has 253 states and 299 transitions. Word has length 36 [2024-11-13 14:08:56,106 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:08:56,106 INFO L471 AbstractCegarLoop]: Abstraction has 253 states and 299 transitions. [2024-11-13 14:08:56,107 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.5) internal successors, (30), 4 states have internal predecessors, (30), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2024-11-13 14:08:56,107 INFO L276 IsEmpty]: Start isEmpty. Operand 253 states and 299 transitions. [2024-11-13 14:08:56,107 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2024-11-13 14:08:56,107 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:08:56,107 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:08:56,137 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dfa83519-f527-4546-a5cf-0431219e848a/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2024-11-13 14:08:56,314 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dfa83519-f527-4546-a5cf-0431219e848a/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:08:56,315 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [free_reportsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 77 more)] === [2024-11-13 14:08:56,316 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:08:56,317 INFO L85 PathProgramCache]: Analyzing trace with hash -82924370, now seen corresponding path program 1 times [2024-11-13 14:08:56,318 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-13 14:08:56,318 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1275065894] [2024-11-13 14:08:56,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:08:56,318 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:08:56,318 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dfa83519-f527-4546-a5cf-0431219e848a/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:08:56,321 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dfa83519-f527-4546-a5cf-0431219e848a/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 14:08:56,324 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dfa83519-f527-4546-a5cf-0431219e848a/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2024-11-13 14:08:56,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:08:56,572 INFO L255 TraceCheckSpWp]: Trace formula consists of 238 conjuncts, 17 conjuncts are in the unsatisfiable core [2024-11-13 14:08:56,578 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 14:08:56,592 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2024-11-13 14:08:56,600 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2024-11-13 14:08:56,658 WARN L873 $PredicateComparison]: unable to prove that (exists ((|ldv_zalloc_#t~malloc13#1.base| (_ BitVec 32))) (and (= (_ bv0 1) (select |c_old(#valid)| |ldv_zalloc_#t~malloc13#1.base|)) (= |c_#length| (store |c_old(#length)| |ldv_zalloc_#t~malloc13#1.base| (select |c_#length| |ldv_zalloc_#t~malloc13#1.base|))))) is different from true [2024-11-13 14:08:56,713 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 14:08:56,716 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 9 [2024-11-13 14:08:56,731 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2024-11-13 14:08:56,732 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2024-11-13 14:08:56,898 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:08:56,898 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 14:08:56,898 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-13 14:08:56,898 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1275065894] [2024-11-13 14:08:56,899 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1275065894] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 14:08:56,899 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 14:08:56,899 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-13 14:08:56,899 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1157532745] [2024-11-13 14:08:56,899 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 14:08:56,900 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-13 14:08:56,900 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-13 14:08:56,900 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-13 14:08:56,900 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=21, Unknown=1, NotChecked=8, Total=42 [2024-11-13 14:08:56,901 INFO L87 Difference]: Start difference. First operand 253 states and 299 transitions. Second operand has 7 states, 5 states have (on average 6.2) internal successors, (31), 6 states have internal predecessors, (31), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-13 14:08:58,274 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:08:58,274 INFO L93 Difference]: Finished difference Result 300 states and 334 transitions. [2024-11-13 14:08:58,275 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-13 14:08:58,276 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 5 states have (on average 6.2) internal successors, (31), 6 states have internal predecessors, (31), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 37 [2024-11-13 14:08:58,276 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:08:58,278 INFO L225 Difference]: With dead ends: 300 [2024-11-13 14:08:58,278 INFO L226 Difference]: Without dead ends: 300 [2024-11-13 14:08:58,278 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=37, Unknown=1, NotChecked=12, Total=72 [2024-11-13 14:08:58,279 INFO L432 NwaCegarLoop]: 117 mSDtfsCounter, 164 mSDsluCounter, 250 mSDsCounter, 0 mSdLazyCounter, 421 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 165 SdHoareTripleChecker+Valid, 367 SdHoareTripleChecker+Invalid, 747 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 421 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 311 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2024-11-13 14:08:58,279 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [165 Valid, 367 Invalid, 747 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 421 Invalid, 0 Unknown, 311 Unchecked, 1.3s Time] [2024-11-13 14:08:58,282 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 300 states. [2024-11-13 14:08:58,290 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 300 to 253. [2024-11-13 14:08:58,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 253 states, 172 states have (on average 1.6046511627906976) internal successors, (276), 236 states have internal predecessors, (276), 9 states have call successors, (9), 7 states have call predecessors, (9), 8 states have return successors, (12), 9 states have call predecessors, (12), 9 states have call successors, (12) [2024-11-13 14:08:58,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 253 states to 253 states and 297 transitions. [2024-11-13 14:08:58,293 INFO L78 Accepts]: Start accepts. Automaton has 253 states and 297 transitions. Word has length 37 [2024-11-13 14:08:58,293 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:08:58,293 INFO L471 AbstractCegarLoop]: Abstraction has 253 states and 297 transitions. [2024-11-13 14:08:58,294 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 5 states have (on average 6.2) internal successors, (31), 6 states have internal predecessors, (31), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-13 14:08:58,294 INFO L276 IsEmpty]: Start isEmpty. Operand 253 states and 297 transitions. [2024-11-13 14:08:58,295 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2024-11-13 14:08:58,295 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:08:58,295 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:08:58,326 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dfa83519-f527-4546-a5cf-0431219e848a/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2024-11-13 14:08:58,495 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dfa83519-f527-4546-a5cf-0431219e848a/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:08:58,495 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr41ASSERT_VIOLATIONMEMORY_FREE === [free_reportsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 77 more)] === [2024-11-13 14:08:58,496 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:08:58,496 INFO L85 PathProgramCache]: Analyzing trace with hash -1675358075, now seen corresponding path program 1 times [2024-11-13 14:08:58,496 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-13 14:08:58,496 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [330290624] [2024-11-13 14:08:58,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:08:58,496 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:08:58,496 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dfa83519-f527-4546-a5cf-0431219e848a/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:08:58,498 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dfa83519-f527-4546-a5cf-0431219e848a/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 14:08:58,500 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dfa83519-f527-4546-a5cf-0431219e848a/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2024-11-13 14:08:58,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:08:58,722 INFO L255 TraceCheckSpWp]: Trace formula consists of 205 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-13 14:08:58,724 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 14:08:58,753 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:08:58,753 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 14:08:58,753 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-13 14:08:58,753 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [330290624] [2024-11-13 14:08:58,753 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [330290624] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 14:08:58,753 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 14:08:58,753 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-13 14:08:58,753 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1103417773] [2024-11-13 14:08:58,754 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 14:08:58,754 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-13 14:08:58,754 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-13 14:08:58,755 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-13 14:08:58,755 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-13 14:08:58,755 INFO L87 Difference]: Start difference. First operand 253 states and 297 transitions. Second operand has 4 states, 4 states have (on average 8.75) internal successors, (35), 4 states have internal predecessors, (35), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2024-11-13 14:08:58,790 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:08:58,790 INFO L93 Difference]: Finished difference Result 255 states and 299 transitions. [2024-11-13 14:08:58,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-13 14:08:58,791 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.75) internal successors, (35), 4 states have internal predecessors, (35), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 41 [2024-11-13 14:08:58,791 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:08:58,792 INFO L225 Difference]: With dead ends: 255 [2024-11-13 14:08:58,793 INFO L226 Difference]: Without dead ends: 255 [2024-11-13 14:08:58,793 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-13 14:08:58,793 INFO L432 NwaCegarLoop]: 195 mSDtfsCounter, 0 mSDsluCounter, 383 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 578 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-13 14:08:58,794 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 578 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-13 14:08:58,795 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 255 states. [2024-11-13 14:08:58,804 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 255 to 255. [2024-11-13 14:08:58,805 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 255 states, 174 states have (on average 1.5977011494252873) internal successors, (278), 238 states have internal predecessors, (278), 9 states have call successors, (9), 7 states have call predecessors, (9), 8 states have return successors, (12), 9 states have call predecessors, (12), 9 states have call successors, (12) [2024-11-13 14:08:58,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 255 states to 255 states and 299 transitions. [2024-11-13 14:08:58,807 INFO L78 Accepts]: Start accepts. Automaton has 255 states and 299 transitions. Word has length 41 [2024-11-13 14:08:58,807 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:08:58,807 INFO L471 AbstractCegarLoop]: Abstraction has 255 states and 299 transitions. [2024-11-13 14:08:58,807 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.75) internal successors, (35), 4 states have internal predecessors, (35), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2024-11-13 14:08:58,807 INFO L276 IsEmpty]: Start isEmpty. Operand 255 states and 299 transitions. [2024-11-13 14:08:58,808 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2024-11-13 14:08:58,808 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:08:58,808 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:08:58,835 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dfa83519-f527-4546-a5cf-0431219e848a/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2024-11-13 14:08:59,009 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dfa83519-f527-4546-a5cf-0431219e848a/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:08:59,009 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr43REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [free_reportsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 77 more)] === [2024-11-13 14:08:59,009 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:08:59,009 INFO L85 PathProgramCache]: Analyzing trace with hash -396426928, now seen corresponding path program 1 times [2024-11-13 14:08:59,010 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-13 14:08:59,010 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [305441587] [2024-11-13 14:08:59,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:08:59,010 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:08:59,010 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dfa83519-f527-4546-a5cf-0431219e848a/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:08:59,012 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dfa83519-f527-4546-a5cf-0431219e848a/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 14:08:59,014 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dfa83519-f527-4546-a5cf-0431219e848a/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2024-11-13 14:08:59,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:08:59,233 INFO L255 TraceCheckSpWp]: Trace formula consists of 215 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-11-13 14:08:59,236 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 14:08:59,302 INFO L349 Elim1Store]: treesize reduction 24, result has 33.3 percent of original size [2024-11-13 14:08:59,302 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 21 treesize of output 20 [2024-11-13 14:08:59,339 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 5 [2024-11-13 14:08:59,467 INFO L349 Elim1Store]: treesize reduction 24, result has 33.3 percent of original size [2024-11-13 14:08:59,467 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 21 treesize of output 20 [2024-11-13 14:08:59,742 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 16 treesize of output 13 [2024-11-13 14:08:59,767 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 13 [2024-11-13 14:08:59,811 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:08:59,811 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 14:08:59,811 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-13 14:08:59,811 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [305441587] [2024-11-13 14:08:59,811 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [305441587] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 14:08:59,812 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 14:08:59,812 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-13 14:08:59,812 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [310215293] [2024-11-13 14:08:59,812 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 14:08:59,813 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-13 14:08:59,813 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-13 14:08:59,813 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-13 14:08:59,814 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-11-13 14:08:59,815 INFO L87 Difference]: Start difference. First operand 255 states and 299 transitions. Second operand has 11 states, 9 states have (on average 4.0) internal successors, (36), 9 states have internal predecessors, (36), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-13 14:09:01,755 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:09:01,755 INFO L93 Difference]: Finished difference Result 330 states and 379 transitions. [2024-11-13 14:09:01,756 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-13 14:09:01,756 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 9 states have (on average 4.0) internal successors, (36), 9 states have internal predecessors, (36), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 42 [2024-11-13 14:09:01,756 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:09:01,759 INFO L225 Difference]: With dead ends: 330 [2024-11-13 14:09:01,759 INFO L226 Difference]: Without dead ends: 330 [2024-11-13 14:09:01,759 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=44, Invalid=196, Unknown=0, NotChecked=0, Total=240 [2024-11-13 14:09:01,760 INFO L432 NwaCegarLoop]: 95 mSDtfsCounter, 301 mSDsluCounter, 531 mSDsCounter, 0 mSdLazyCounter, 789 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 303 SdHoareTripleChecker+Valid, 626 SdHoareTripleChecker+Invalid, 824 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 789 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2024-11-13 14:09:01,760 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [303 Valid, 626 Invalid, 824 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 789 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2024-11-13 14:09:01,761 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 330 states. [2024-11-13 14:09:01,768 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 330 to 266. [2024-11-13 14:09:01,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 266 states, 185 states have (on average 1.5945945945945945) internal successors, (295), 246 states have internal predecessors, (295), 9 states have call successors, (9), 7 states have call predecessors, (9), 8 states have return successors, (12), 12 states have call predecessors, (12), 9 states have call successors, (12) [2024-11-13 14:09:01,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 266 states to 266 states and 316 transitions. [2024-11-13 14:09:01,771 INFO L78 Accepts]: Start accepts. Automaton has 266 states and 316 transitions. Word has length 42 [2024-11-13 14:09:01,771 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:09:01,772 INFO L471 AbstractCegarLoop]: Abstraction has 266 states and 316 transitions. [2024-11-13 14:09:01,772 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 9 states have (on average 4.0) internal successors, (36), 9 states have internal predecessors, (36), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-13 14:09:01,772 INFO L276 IsEmpty]: Start isEmpty. Operand 266 states and 316 transitions. [2024-11-13 14:09:01,773 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2024-11-13 14:09:01,773 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:09:01,773 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:09:01,798 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dfa83519-f527-4546-a5cf-0431219e848a/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Ended with exit code 0 [2024-11-13 14:09:01,974 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dfa83519-f527-4546-a5cf-0431219e848a/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:09:01,974 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr44REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [free_reportsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 77 more)] === [2024-11-13 14:09:01,974 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:09:01,975 INFO L85 PathProgramCache]: Analyzing trace with hash -396426927, now seen corresponding path program 1 times [2024-11-13 14:09:01,975 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-13 14:09:01,975 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [11324596] [2024-11-13 14:09:01,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:09:01,975 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:09:01,975 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dfa83519-f527-4546-a5cf-0431219e848a/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:09:01,977 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dfa83519-f527-4546-a5cf-0431219e848a/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 14:09:01,978 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dfa83519-f527-4546-a5cf-0431219e848a/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2024-11-13 14:09:02,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:09:02,217 INFO L255 TraceCheckSpWp]: Trace formula consists of 215 conjuncts, 30 conjuncts are in the unsatisfiable core [2024-11-13 14:09:02,222 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 14:09:02,464 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 14:09:02,466 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 9 [2024-11-13 14:09:02,683 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 14:09:02,684 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 9 [2024-11-13 14:09:10,883 INFO L349 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2024-11-13 14:09:10,884 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 14 [2024-11-13 14:09:11,164 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:09:11,164 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 14:09:11,164 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-13 14:09:11,164 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [11324596] [2024-11-13 14:09:11,164 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [11324596] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 14:09:11,164 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 14:09:11,164 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-13 14:09:11,165 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1726884859] [2024-11-13 14:09:11,165 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 14:09:11,165 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-13 14:09:11,165 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-13 14:09:11,165 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-13 14:09:11,166 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=79, Unknown=6, NotChecked=0, Total=110 [2024-11-13 14:09:11,166 INFO L87 Difference]: Start difference. First operand 266 states and 316 transitions. Second operand has 11 states, 9 states have (on average 4.0) internal successors, (36), 9 states have internal predecessors, (36), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-13 14:09:15,527 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-13 14:09:20,535 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-13 14:09:25,137 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-13 14:09:29,257 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-13 14:09:33,659 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-13 14:09:37,717 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-13 14:09:42,385 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-13 14:09:46,429 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-13 14:09:50,587 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-13 14:09:50,846 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:09:50,847 INFO L93 Difference]: Finished difference Result 290 states and 336 transitions. [2024-11-13 14:09:50,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-13 14:09:50,847 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 9 states have (on average 4.0) internal successors, (36), 9 states have internal predecessors, (36), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) Word has length 42 [2024-11-13 14:09:50,848 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:09:50,849 INFO L225 Difference]: With dead ends: 290 [2024-11-13 14:09:50,849 INFO L226 Difference]: Without dead ends: 290 [2024-11-13 14:09:50,850 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 31 SyntacticMatches, 1 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 51 ImplicationChecksByTransitivity, 8.7s TimeCoverageRelationStatistics Valid=85, Invalid=287, Unknown=8, NotChecked=0, Total=380 [2024-11-13 14:09:50,850 INFO L432 NwaCegarLoop]: 73 mSDtfsCounter, 420 mSDsluCounter, 329 mSDsCounter, 0 mSdLazyCounter, 772 mSolverCounterSat, 63 mSolverCounterUnsat, 114 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 38.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 422 SdHoareTripleChecker+Valid, 402 SdHoareTripleChecker+Invalid, 949 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 63 IncrementalHoareTripleChecker+Valid, 772 IncrementalHoareTripleChecker+Invalid, 114 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 39.2s IncrementalHoareTripleChecker+Time [2024-11-13 14:09:50,851 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [422 Valid, 402 Invalid, 949 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [63 Valid, 772 Invalid, 114 Unknown, 0 Unchecked, 39.2s Time] [2024-11-13 14:09:50,852 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 290 states. [2024-11-13 14:09:50,862 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 290 to 264. [2024-11-13 14:09:50,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 264 states, 185 states have (on average 1.572972972972973) internal successors, (291), 244 states have internal predecessors, (291), 9 states have call successors, (9), 7 states have call predecessors, (9), 8 states have return successors, (12), 12 states have call predecessors, (12), 9 states have call successors, (12) [2024-11-13 14:09:50,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 264 states to 264 states and 312 transitions. [2024-11-13 14:09:50,866 INFO L78 Accepts]: Start accepts. Automaton has 264 states and 312 transitions. Word has length 42 [2024-11-13 14:09:50,866 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:09:50,866 INFO L471 AbstractCegarLoop]: Abstraction has 264 states and 312 transitions. [2024-11-13 14:09:50,866 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 9 states have (on average 4.0) internal successors, (36), 9 states have internal predecessors, (36), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-13 14:09:50,867 INFO L276 IsEmpty]: Start isEmpty. Operand 264 states and 312 transitions. [2024-11-13 14:09:50,867 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2024-11-13 14:09:50,867 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:09:50,867 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:09:50,895 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dfa83519-f527-4546-a5cf-0431219e848a/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Ended with exit code 0 [2024-11-13 14:09:51,071 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dfa83519-f527-4546-a5cf-0431219e848a/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:09:51,072 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr50ASSERT_VIOLATIONMEMORY_LEAK === [free_reportsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 77 more)] === [2024-11-13 14:09:51,072 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:09:51,072 INFO L85 PathProgramCache]: Analyzing trace with hash 595687231, now seen corresponding path program 1 times [2024-11-13 14:09:51,073 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-13 14:09:51,073 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [675633998] [2024-11-13 14:09:51,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:09:51,073 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:09:51,073 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dfa83519-f527-4546-a5cf-0431219e848a/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:09:51,075 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dfa83519-f527-4546-a5cf-0431219e848a/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 14:09:51,076 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dfa83519-f527-4546-a5cf-0431219e848a/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2024-11-13 14:09:51,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:09:51,302 INFO L255 TraceCheckSpWp]: Trace formula consists of 208 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-13 14:09:51,304 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 14:09:51,330 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:09:51,331 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 14:09:51,331 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-13 14:09:51,331 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [675633998] [2024-11-13 14:09:51,331 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [675633998] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 14:09:51,331 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 14:09:51,331 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-13 14:09:51,331 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1570143705] [2024-11-13 14:09:51,331 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 14:09:51,332 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-13 14:09:51,332 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-13 14:09:51,333 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-13 14:09:51,333 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-13 14:09:51,333 INFO L87 Difference]: Start difference. First operand 264 states and 312 transitions. Second operand has 4 states, 4 states have (on average 9.25) internal successors, (37), 4 states have internal predecessors, (37), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2024-11-13 14:09:51,364 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:09:51,365 INFO L93 Difference]: Finished difference Result 266 states and 313 transitions. [2024-11-13 14:09:51,365 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-13 14:09:51,365 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 9.25) internal successors, (37), 4 states have internal predecessors, (37), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 43 [2024-11-13 14:09:51,366 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:09:51,367 INFO L225 Difference]: With dead ends: 266 [2024-11-13 14:09:51,367 INFO L226 Difference]: Without dead ends: 266 [2024-11-13 14:09:51,367 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-13 14:09:51,368 INFO L432 NwaCegarLoop]: 193 mSDtfsCounter, 0 mSDsluCounter, 380 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 573 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-13 14:09:51,369 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 573 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-13 14:09:51,370 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 266 states. [2024-11-13 14:09:51,375 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 266 to 266. [2024-11-13 14:09:51,376 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 266 states, 187 states have (on average 1.5614973262032086) internal successors, (292), 246 states have internal predecessors, (292), 9 states have call successors, (9), 7 states have call predecessors, (9), 8 states have return successors, (12), 12 states have call predecessors, (12), 9 states have call successors, (12) [2024-11-13 14:09:51,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 266 states to 266 states and 313 transitions. [2024-11-13 14:09:51,378 INFO L78 Accepts]: Start accepts. Automaton has 266 states and 313 transitions. Word has length 43 [2024-11-13 14:09:51,378 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:09:51,379 INFO L471 AbstractCegarLoop]: Abstraction has 266 states and 313 transitions. [2024-11-13 14:09:51,379 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.25) internal successors, (37), 4 states have internal predecessors, (37), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2024-11-13 14:09:51,379 INFO L276 IsEmpty]: Start isEmpty. Operand 266 states and 313 transitions. [2024-11-13 14:09:51,379 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2024-11-13 14:09:51,380 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:09:51,380 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:09:51,407 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dfa83519-f527-4546-a5cf-0431219e848a/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Ended with exit code 0 [2024-11-13 14:09:51,580 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dfa83519-f527-4546-a5cf-0431219e848a/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:09:51,581 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting free_reportsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [free_reportsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 77 more)] === [2024-11-13 14:09:51,581 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:09:51,582 INFO L85 PathProgramCache]: Analyzing trace with hash 1205698931, now seen corresponding path program 1 times [2024-11-13 14:09:51,582 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-13 14:09:51,582 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1583806301] [2024-11-13 14:09:51,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:09:51,582 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:09:51,582 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dfa83519-f527-4546-a5cf-0431219e848a/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:09:51,585 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dfa83519-f527-4546-a5cf-0431219e848a/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 14:09:51,587 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dfa83519-f527-4546-a5cf-0431219e848a/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2024-11-13 14:09:51,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:09:51,859 INFO L255 TraceCheckSpWp]: Trace formula consists of 233 conjuncts, 42 conjuncts are in the unsatisfiable core [2024-11-13 14:09:51,864 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 14:09:51,894 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2024-11-13 14:09:52,144 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 [2024-11-13 14:09:52,277 INFO L349 Elim1Store]: treesize reduction 74, result has 29.5 percent of original size [2024-11-13 14:09:52,277 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 32 treesize of output 44 [2024-11-13 14:09:52,375 INFO L349 Elim1Store]: treesize reduction 13, result has 7.1 percent of original size [2024-11-13 14:09:52,375 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 19 treesize of output 11 [2024-11-13 14:09:52,617 INFO L349 Elim1Store]: treesize reduction 74, result has 29.5 percent of original size [2024-11-13 14:09:52,617 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 32 treesize of output 44 [2024-11-13 14:09:52,971 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 27 [2024-11-13 14:09:53,191 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 27 [2024-11-13 14:09:53,652 INFO L349 Elim1Store]: treesize reduction 29, result has 23.7 percent of original size [2024-11-13 14:09:53,652 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 30 treesize of output 38 [2024-11-13 14:09:53,762 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 19 treesize of output 11 [2024-11-13 14:09:53,964 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:09:53,965 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 14:09:53,965 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-13 14:09:53,965 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1583806301] [2024-11-13 14:09:53,965 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1583806301] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 14:09:53,965 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 14:09:53,965 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2024-11-13 14:09:53,965 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2004177229] [2024-11-13 14:09:53,965 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 14:09:53,966 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-13 14:09:53,966 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-13 14:09:53,966 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-13 14:09:53,967 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=255, Unknown=0, NotChecked=0, Total=306 [2024-11-13 14:09:53,967 INFO L87 Difference]: Start difference. First operand 266 states and 313 transitions. Second operand has 18 states, 14 states have (on average 2.7142857142857144) internal successors, (38), 14 states have internal predecessors, (38), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-13 14:09:58,973 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:09:58,973 INFO L93 Difference]: Finished difference Result 419 states and 486 transitions. [2024-11-13 14:09:58,974 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2024-11-13 14:09:58,975 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 14 states have (on average 2.7142857142857144) internal successors, (38), 14 states have internal predecessors, (38), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 45 [2024-11-13 14:09:58,975 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:09:58,977 INFO L225 Difference]: With dead ends: 419 [2024-11-13 14:09:58,977 INFO L226 Difference]: Without dead ends: 419 [2024-11-13 14:09:58,977 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 28 SyntacticMatches, 1 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 229 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=156, Invalid=966, Unknown=0, NotChecked=0, Total=1122 [2024-11-13 14:09:58,981 INFO L432 NwaCegarLoop]: 94 mSDtfsCounter, 467 mSDsluCounter, 973 mSDsCounter, 0 mSdLazyCounter, 1513 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 469 SdHoareTripleChecker+Valid, 1067 SdHoareTripleChecker+Invalid, 1560 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 1513 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.3s IncrementalHoareTripleChecker+Time [2024-11-13 14:09:58,982 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [469 Valid, 1067 Invalid, 1560 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [47 Valid, 1513 Invalid, 0 Unknown, 0 Unchecked, 4.3s Time] [2024-11-13 14:09:58,984 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 419 states. [2024-11-13 14:09:58,994 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 419 to 347. [2024-11-13 14:09:58,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 347 states, 262 states have (on average 1.5725190839694656) internal successors, (412), 323 states have internal predecessors, (412), 12 states have call successors, (12), 10 states have call predecessors, (12), 11 states have return successors, (17), 13 states have call predecessors, (17), 12 states have call successors, (17) [2024-11-13 14:09:58,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 347 states to 347 states and 441 transitions. [2024-11-13 14:09:58,999 INFO L78 Accepts]: Start accepts. Automaton has 347 states and 441 transitions. Word has length 45 [2024-11-13 14:09:58,999 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:09:58,999 INFO L471 AbstractCegarLoop]: Abstraction has 347 states and 441 transitions. [2024-11-13 14:09:59,001 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 14 states have (on average 2.7142857142857144) internal successors, (38), 14 states have internal predecessors, (38), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-13 14:09:59,001 INFO L276 IsEmpty]: Start isEmpty. Operand 347 states and 441 transitions. [2024-11-13 14:09:59,002 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2024-11-13 14:09:59,002 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:09:59,002 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:09:59,027 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dfa83519-f527-4546-a5cf-0431219e848a/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2024-11-13 14:09:59,206 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dfa83519-f527-4546-a5cf-0431219e848a/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:09:59,207 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting free_reportsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [free_reportsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 77 more)] === [2024-11-13 14:09:59,207 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:09:59,207 INFO L85 PathProgramCache]: Analyzing trace with hash 1205698932, now seen corresponding path program 1 times [2024-11-13 14:09:59,208 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-13 14:09:59,208 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [392821006] [2024-11-13 14:09:59,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:09:59,208 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:09:59,208 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dfa83519-f527-4546-a5cf-0431219e848a/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:09:59,210 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dfa83519-f527-4546-a5cf-0431219e848a/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 14:09:59,213 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dfa83519-f527-4546-a5cf-0431219e848a/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2024-11-13 14:09:59,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:09:59,503 INFO L255 TraceCheckSpWp]: Trace formula consists of 233 conjuncts, 57 conjuncts are in the unsatisfiable core [2024-11-13 14:09:59,509 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 14:09:59,559 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2024-11-13 14:09:59,570 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2024-11-13 14:10:00,030 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 [2024-11-13 14:10:00,052 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 [2024-11-13 14:10:00,170 INFO L349 Elim1Store]: treesize reduction 26, result has 33.3 percent of original size [2024-11-13 14:10:00,170 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 24 treesize of output 26 [2024-11-13 14:10:00,197 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 13 [2024-11-13 14:10:00,278 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 9 treesize of output 3 [2024-11-13 14:10:00,546 INFO L349 Elim1Store]: treesize reduction 19, result has 47.2 percent of original size [2024-11-13 14:10:00,546 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 1 case distinctions, treesize of input 16 treesize of output 26 [2024-11-13 14:10:00,818 INFO L349 Elim1Store]: treesize reduction 13, result has 40.9 percent of original size [2024-11-13 14:10:00,819 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 1 case distinctions, treesize of input 16 treesize of output 15 [2024-11-13 14:10:00,833 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 5 treesize of output 3 [2024-11-13 14:10:00,881 INFO L349 Elim1Store]: treesize reduction 13, result has 40.9 percent of original size [2024-11-13 14:10:00,881 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 34 treesize of output 29 [2024-11-13 14:10:00,892 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 20 treesize of output 14 [2024-11-13 14:10:01,240 INFO L349 Elim1Store]: treesize reduction 13, result has 40.9 percent of original size [2024-11-13 14:10:01,241 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 1 case distinctions, treesize of input 39 treesize of output 34 [2024-11-13 14:10:01,319 INFO L349 Elim1Store]: treesize reduction 13, result has 40.9 percent of original size [2024-11-13 14:10:01,319 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 1 case distinctions, treesize of input 20 treesize of output 19 [2024-11-13 14:10:01,826 INFO L349 Elim1Store]: treesize reduction 15, result has 37.5 percent of original size [2024-11-13 14:10:01,826 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 1 case distinctions, treesize of input 11 treesize of output 9 [2024-11-13 14:10:02,535 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 61 treesize of output 45 [2024-11-13 14:10:02,545 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 49 treesize of output 37 [2024-11-13 14:10:02,568 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-13 14:10:02,569 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 41 treesize of output 47 [2024-11-13 14:10:03,064 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:10:03,064 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 14:10:03,064 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-13 14:10:03,064 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [392821006] [2024-11-13 14:10:03,064 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [392821006] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 14:10:03,064 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 14:10:03,064 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2024-11-13 14:10:03,064 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1380261296] [2024-11-13 14:10:03,064 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 14:10:03,065 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-11-13 14:10:03,065 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-13 14:10:03,065 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-11-13 14:10:03,066 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=375, Unknown=0, NotChecked=0, Total=420 [2024-11-13 14:10:03,066 INFO L87 Difference]: Start difference. First operand 347 states and 441 transitions. Second operand has 21 states, 17 states have (on average 2.235294117647059) internal successors, (38), 17 states have internal predecessors, (38), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-13 14:10:12,198 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:10:12,199 INFO L93 Difference]: Finished difference Result 452 states and 529 transitions. [2024-11-13 14:10:12,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2024-11-13 14:10:12,200 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 17 states have (on average 2.235294117647059) internal successors, (38), 17 states have internal predecessors, (38), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 45 [2024-11-13 14:10:12,200 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:10:12,202 INFO L225 Difference]: With dead ends: 452 [2024-11-13 14:10:12,202 INFO L226 Difference]: Without dead ends: 452 [2024-11-13 14:10:12,203 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 24 SyntacticMatches, 1 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 179 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=121, Invalid=1068, Unknown=1, NotChecked=0, Total=1190 [2024-11-13 14:10:12,204 INFO L432 NwaCegarLoop]: 109 mSDtfsCounter, 316 mSDsluCounter, 1298 mSDsCounter, 0 mSdLazyCounter, 2331 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 316 SdHoareTripleChecker+Valid, 1407 SdHoareTripleChecker+Invalid, 2349 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 2331 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.5s IncrementalHoareTripleChecker+Time [2024-11-13 14:10:12,204 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [316 Valid, 1407 Invalid, 2349 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 2331 Invalid, 0 Unknown, 0 Unchecked, 7.5s Time] [2024-11-13 14:10:12,205 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 452 states. [2024-11-13 14:10:12,216 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 452 to 384. [2024-11-13 14:10:12,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 384 states, 292 states have (on average 1.571917808219178) internal successors, (459), 356 states have internal predecessors, (459), 15 states have call successors, (15), 13 states have call predecessors, (15), 15 states have return successors, (21), 14 states have call predecessors, (21), 15 states have call successors, (21) [2024-11-13 14:10:12,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 384 states to 384 states and 495 transitions. [2024-11-13 14:10:12,219 INFO L78 Accepts]: Start accepts. Automaton has 384 states and 495 transitions. Word has length 45 [2024-11-13 14:10:12,219 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:10:12,219 INFO L471 AbstractCegarLoop]: Abstraction has 384 states and 495 transitions. [2024-11-13 14:10:12,220 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 17 states have (on average 2.235294117647059) internal successors, (38), 17 states have internal predecessors, (38), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-13 14:10:12,220 INFO L276 IsEmpty]: Start isEmpty. Operand 384 states and 495 transitions. [2024-11-13 14:10:12,220 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2024-11-13 14:10:12,220 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:10:12,220 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:10:12,249 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dfa83519-f527-4546-a5cf-0431219e848a/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Ended with exit code 0 [2024-11-13 14:10:12,421 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dfa83519-f527-4546-a5cf-0431219e848a/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:10:12,421 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr16REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [free_reportsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 77 more)] === [2024-11-13 14:10:12,421 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:10:12,422 INFO L85 PathProgramCache]: Analyzing trace with hash -1476113846, now seen corresponding path program 1 times [2024-11-13 14:10:12,422 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-13 14:10:12,422 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [298704215] [2024-11-13 14:10:12,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:10:12,422 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:10:12,422 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dfa83519-f527-4546-a5cf-0431219e848a/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:10:12,424 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dfa83519-f527-4546-a5cf-0431219e848a/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 14:10:12,425 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dfa83519-f527-4546-a5cf-0431219e848a/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2024-11-13 14:10:12,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:10:12,753 INFO L255 TraceCheckSpWp]: Trace formula consists of 291 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-11-13 14:10:12,756 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 14:10:12,884 INFO L349 Elim1Store]: treesize reduction 24, result has 33.3 percent of original size [2024-11-13 14:10:12,884 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 21 treesize of output 20 [2024-11-13 14:10:12,984 INFO L349 Elim1Store]: treesize reduction 24, result has 33.3 percent of original size [2024-11-13 14:10:12,984 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 21 treesize of output 20 [2024-11-13 14:10:13,102 INFO L349 Elim1Store]: treesize reduction 24, result has 33.3 percent of original size [2024-11-13 14:10:13,102 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 21 treesize of output 20 [2024-11-13 14:10:13,293 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:10:13,294 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 14:10:13,294 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-13 14:10:13,294 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [298704215] [2024-11-13 14:10:13,294 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [298704215] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 14:10:13,294 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 14:10:13,295 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-13 14:10:13,295 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [167542061] [2024-11-13 14:10:13,295 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 14:10:13,295 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-13 14:10:13,295 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-13 14:10:13,296 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-13 14:10:13,296 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-13 14:10:13,296 INFO L87 Difference]: Start difference. First operand 384 states and 495 transitions. Second operand has 5 states, 4 states have (on average 9.5) internal successors, (38), 4 states have internal predecessors, (38), 1 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2024-11-13 14:10:14,617 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:10:14,617 INFO L93 Difference]: Finished difference Result 403 states and 498 transitions. [2024-11-13 14:10:14,618 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-13 14:10:14,618 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 9.5) internal successors, (38), 4 states have internal predecessors, (38), 1 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 44 [2024-11-13 14:10:14,618 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:10:14,619 INFO L225 Difference]: With dead ends: 403 [2024-11-13 14:10:14,619 INFO L226 Difference]: Without dead ends: 403 [2024-11-13 14:10:14,620 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 39 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2024-11-13 14:10:14,620 INFO L432 NwaCegarLoop]: 145 mSDtfsCounter, 168 mSDsluCounter, 237 mSDsCounter, 0 mSdLazyCounter, 305 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 169 SdHoareTripleChecker+Valid, 382 SdHoareTripleChecker+Invalid, 328 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 305 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2024-11-13 14:10:14,620 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [169 Valid, 382 Invalid, 328 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 305 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2024-11-13 14:10:14,622 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 403 states. [2024-11-13 14:10:14,631 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 403 to 383. [2024-11-13 14:10:14,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 383 states, 292 states have (on average 1.5616438356164384) internal successors, (456), 355 states have internal predecessors, (456), 15 states have call successors, (15), 13 states have call predecessors, (15), 15 states have return successors, (21), 14 states have call predecessors, (21), 15 states have call successors, (21) [2024-11-13 14:10:14,634 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 383 states to 383 states and 492 transitions. [2024-11-13 14:10:14,634 INFO L78 Accepts]: Start accepts. Automaton has 383 states and 492 transitions. Word has length 44 [2024-11-13 14:10:14,635 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:10:14,635 INFO L471 AbstractCegarLoop]: Abstraction has 383 states and 492 transitions. [2024-11-13 14:10:14,635 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 9.5) internal successors, (38), 4 states have internal predecessors, (38), 1 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2024-11-13 14:10:14,635 INFO L276 IsEmpty]: Start isEmpty. Operand 383 states and 492 transitions. [2024-11-13 14:10:14,636 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2024-11-13 14:10:14,636 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:10:14,636 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:10:14,665 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dfa83519-f527-4546-a5cf-0431219e848a/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Ended with exit code 0 [2024-11-13 14:10:14,836 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dfa83519-f527-4546-a5cf-0431219e848a/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:10:14,837 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr17REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [free_reportsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 77 more)] === [2024-11-13 14:10:14,837 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:10:14,837 INFO L85 PathProgramCache]: Analyzing trace with hash -1476113845, now seen corresponding path program 1 times [2024-11-13 14:10:14,837 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-13 14:10:14,837 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1208516301] [2024-11-13 14:10:14,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:10:14,838 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:10:14,838 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dfa83519-f527-4546-a5cf-0431219e848a/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:10:14,840 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dfa83519-f527-4546-a5cf-0431219e848a/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 14:10:14,841 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dfa83519-f527-4546-a5cf-0431219e848a/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2024-11-13 14:10:15,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:10:15,166 INFO L255 TraceCheckSpWp]: Trace formula consists of 291 conjuncts, 44 conjuncts are in the unsatisfiable core [2024-11-13 14:10:15,170 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 14:10:15,364 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 14:10:15,365 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 16 treesize of output 11 [2024-11-13 14:10:15,574 INFO L349 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2024-11-13 14:10:15,574 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 20 [2024-11-13 14:10:15,614 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2024-11-13 14:10:15,975 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 14:10:16,003 INFO L349 Elim1Store]: treesize reduction 19, result has 32.1 percent of original size [2024-11-13 14:10:16,003 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 23 treesize of output 32 [2024-11-13 14:10:16,018 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 14:10:16,019 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 0 case distinctions, treesize of input 13 treesize of output 9 [2024-11-13 14:10:17,042 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-13 14:10:17,043 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-13 14:10:17,043 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-13 14:10:17,045 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 33 [2024-11-13 14:10:18,237 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 28 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 63 treesize of output 61 [2024-11-13 14:10:26,749 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 45 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 0 case distinctions, treesize of input 73 treesize of output 99 [2024-11-13 14:10:35,385 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 10 select indices, 10 select index equivalence classes, 91 disjoint index pairs (out of 45 index pairs), introduced 10 new quantified variables, introduced 0 case distinctions, treesize of input 108 treesize of output 135 [2024-11-13 14:10:52,093 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 13 select indices, 13 select index equivalence classes, 78 disjoint index pairs (out of 78 index pairs), introduced 13 new quantified variables, introduced 0 case distinctions, treesize of input 130 treesize of output 62 [2024-11-13 14:10:52,298 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:10:52,298 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 14:10:52,298 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-13 14:10:52,298 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1208516301] [2024-11-13 14:10:52,298 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1208516301] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 14:10:52,298 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 14:10:52,298 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2024-11-13 14:10:52,298 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [258924822] [2024-11-13 14:10:52,298 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 14:10:52,299 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-11-13 14:10:52,299 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-13 14:10:52,300 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-11-13 14:10:52,300 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=219, Unknown=7, NotChecked=0, Total=272 [2024-11-13 14:10:52,300 INFO L87 Difference]: Start difference. First operand 383 states and 492 transitions. Second operand has 17 states, 15 states have (on average 2.533333333333333) internal successors, (38), 15 states have internal predecessors, (38), 3 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-13 14:10:57,832 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-13 14:11:01,918 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-13 14:11:05,921 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-13 14:11:22,085 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-13 14:11:26,091 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-13 14:11:30,095 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-13 14:11:34,219 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-13 14:11:38,342 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-13 14:11:42,349 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-13 14:11:58,618 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-13 14:12:02,622 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-13 14:12:07,637 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-13 14:12:23,974 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-13 14:12:28,775 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-13 14:12:47,059 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-13 14:13:21,286 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-13 14:13:26,868 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-13 14:13:44,513 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.76s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-13 14:13:50,242 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-13 14:13:55,516 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-13 14:14:07,999 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:14:07,999 INFO L93 Difference]: Finished difference Result 444 states and 535 transitions. [2024-11-13 14:14:08,000 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-11-13 14:14:08,000 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 15 states have (on average 2.533333333333333) internal successors, (38), 15 states have internal predecessors, (38), 3 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) Word has length 44 [2024-11-13 14:14:08,000 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:14:08,001 INFO L225 Difference]: With dead ends: 444 [2024-11-13 14:14:08,002 INFO L226 Difference]: Without dead ends: 444 [2024-11-13 14:14:08,002 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 288 ImplicationChecksByTransitivity, 135.7s TimeCoverageRelationStatistics Valid=226, Invalid=1075, Unknown=31, NotChecked=0, Total=1332 [2024-11-13 14:14:08,003 INFO L432 NwaCegarLoop]: 88 mSDtfsCounter, 489 mSDsluCounter, 587 mSDsCounter, 0 mSdLazyCounter, 1272 mSolverCounterSat, 68 mSolverCounterUnsat, 26 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 93.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 492 SdHoareTripleChecker+Valid, 675 SdHoareTripleChecker+Invalid, 1366 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 68 IncrementalHoareTripleChecker+Valid, 1272 IncrementalHoareTripleChecker+Invalid, 26 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 94.0s IncrementalHoareTripleChecker+Time [2024-11-13 14:14:08,003 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [492 Valid, 675 Invalid, 1366 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [68 Valid, 1272 Invalid, 26 Unknown, 0 Unchecked, 94.0s Time] [2024-11-13 14:14:08,004 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 444 states. [2024-11-13 14:14:08,016 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 444 to 356. [2024-11-13 14:14:08,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 356 states, 272 states have (on average 1.5036764705882353) internal successors, (409), 328 states have internal predecessors, (409), 15 states have call successors, (15), 13 states have call predecessors, (15), 15 states have return successors, (21), 14 states have call predecessors, (21), 15 states have call successors, (21) [2024-11-13 14:14:08,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 356 states to 356 states and 445 transitions. [2024-11-13 14:14:08,021 INFO L78 Accepts]: Start accepts. Automaton has 356 states and 445 transitions. Word has length 44 [2024-11-13 14:14:08,021 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:14:08,022 INFO L471 AbstractCegarLoop]: Abstraction has 356 states and 445 transitions. [2024-11-13 14:14:08,022 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 15 states have (on average 2.533333333333333) internal successors, (38), 15 states have internal predecessors, (38), 3 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-13 14:14:08,022 INFO L276 IsEmpty]: Start isEmpty. Operand 356 states and 445 transitions. [2024-11-13 14:14:08,023 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2024-11-13 14:14:08,023 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:14:08,023 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:14:08,068 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dfa83519-f527-4546-a5cf-0431219e848a/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Ended with exit code 0 [2024-11-13 14:14:08,223 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dfa83519-f527-4546-a5cf-0431219e848a/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:14:08,224 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting free_reportsErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [free_reportsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 77 more)] === [2024-11-13 14:14:08,224 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:14:08,224 INFO L85 PathProgramCache]: Analyzing trace with hash -964498060, now seen corresponding path program 1 times [2024-11-13 14:14:08,224 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-13 14:14:08,225 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1511931294] [2024-11-13 14:14:08,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:14:08,225 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:14:08,225 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dfa83519-f527-4546-a5cf-0431219e848a/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:14:08,227 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dfa83519-f527-4546-a5cf-0431219e848a/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 14:14:08,228 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dfa83519-f527-4546-a5cf-0431219e848a/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2024-11-13 14:14:08,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:14:08,494 INFO L255 TraceCheckSpWp]: Trace formula consists of 243 conjuncts, 71 conjuncts are in the unsatisfiable core [2024-11-13 14:14:08,500 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 14:14:08,732 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2024-11-13 14:14:08,949 INFO L349 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2024-11-13 14:14:08,949 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 [2024-11-13 14:14:09,701 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 [2024-11-13 14:14:09,940 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 21 treesize of output 20 [2024-11-13 14:14:10,307 INFO L349 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2024-11-13 14:14:10,308 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 7 [2024-11-13 14:14:10,615 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 [2024-11-13 14:14:10,667 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 46 treesize of output 37 [2024-11-13 14:14:10,975 INFO L349 Elim1Store]: treesize reduction 32, result has 34.7 percent of original size [2024-11-13 14:14:10,975 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 31 treesize of output 35 [2024-11-13 14:14:12,069 INFO L349 Elim1Store]: treesize reduction 13, result has 40.9 percent of original size [2024-11-13 14:14:12,069 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 16 treesize of output 15 [2024-11-13 14:14:12,093 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 5 treesize of output 3 [2024-11-13 14:14:12,231 INFO L349 Elim1Store]: treesize reduction 32, result has 37.3 percent of original size [2024-11-13 14:14:12,231 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 55 treesize of output 50 [2024-11-13 14:14:12,271 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 0 case distinctions, treesize of input 15 treesize of output 11 [2024-11-13 14:14:12,339 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 23 [2024-11-13 14:14:13,176 INFO L349 Elim1Store]: treesize reduction 13, result has 40.9 percent of original size [2024-11-13 14:14:13,176 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 20 treesize of output 19 [2024-11-13 14:14:13,560 INFO L349 Elim1Store]: treesize reduction 36, result has 59.1 percent of original size [2024-11-13 14:14:13,560 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 92 treesize of output 114 [2024-11-13 14:14:14,639 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 5 treesize of output 3 [2024-11-13 14:14:14,857 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 123 treesize of output 99 [2024-11-13 14:14:16,541 INFO L349 Elim1Store]: treesize reduction 15, result has 37.5 percent of original size [2024-11-13 14:14:16,541 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 1 case distinctions, treesize of input 11 treesize of output 9 [2024-11-13 14:14:17,931 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 80 treesize of output 68 [2024-11-13 14:14:18,986 INFO L349 Elim1Store]: treesize reduction 77, result has 13.5 percent of original size [2024-11-13 14:14:18,986 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 1 disjoint index pairs (out of 10 index pairs), introduced 6 new quantified variables, introduced 10 case distinctions, treesize of input 72 treesize of output 42 [2024-11-13 14:14:19,496 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:14:19,496 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 14:14:19,496 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-13 14:14:19,496 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1511931294] [2024-11-13 14:14:19,496 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1511931294] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 14:14:19,497 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 14:14:19,497 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [26] imperfect sequences [] total 26 [2024-11-13 14:14:19,497 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [668206636] [2024-11-13 14:14:19,497 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 14:14:19,497 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2024-11-13 14:14:19,501 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-13 14:14:19,502 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2024-11-13 14:14:19,502 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=670, Unknown=0, NotChecked=0, Total=756 [2024-11-13 14:14:19,504 INFO L87 Difference]: Start difference. First operand 356 states and 445 transitions. Second operand has 28 states, 25 states have (on average 1.6) internal successors, (40), 20 states have internal predecessors, (40), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-13 14:14:39,425 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:14:39,425 INFO L93 Difference]: Finished difference Result 479 states and 546 transitions. [2024-11-13 14:14:39,426 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2024-11-13 14:14:39,426 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 25 states have (on average 1.6) internal successors, (40), 20 states have internal predecessors, (40), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 47 [2024-11-13 14:14:39,426 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:14:39,428 INFO L225 Difference]: With dead ends: 479 [2024-11-13 14:14:39,428 INFO L226 Difference]: Without dead ends: 479 [2024-11-13 14:14:39,430 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 19 SyntacticMatches, 1 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 779 ImplicationChecksByTransitivity, 10.3s TimeCoverageRelationStatistics Valid=316, Invalid=2654, Unknown=0, NotChecked=0, Total=2970 [2024-11-13 14:14:39,430 INFO L432 NwaCegarLoop]: 84 mSDtfsCounter, 448 mSDsluCounter, 1239 mSDsCounter, 0 mSdLazyCounter, 2652 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 451 SdHoareTripleChecker+Valid, 1323 SdHoareTripleChecker+Invalid, 2700 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 2652 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13.2s IncrementalHoareTripleChecker+Time [2024-11-13 14:14:39,431 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [451 Valid, 1323 Invalid, 2700 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [48 Valid, 2652 Invalid, 0 Unknown, 0 Unchecked, 13.2s Time] [2024-11-13 14:14:39,435 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 479 states. [2024-11-13 14:14:39,445 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 479 to 383. [2024-11-13 14:14:39,446 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 383 states, 293 states have (on average 1.522184300341297) internal successors, (446), 352 states have internal predecessors, (446), 19 states have call successors, (19), 14 states have call predecessors, (19), 17 states have return successors, (26), 16 states have call predecessors, (26), 19 states have call successors, (26) [2024-11-13 14:14:39,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 383 states to 383 states and 491 transitions. [2024-11-13 14:14:39,448 INFO L78 Accepts]: Start accepts. Automaton has 383 states and 491 transitions. Word has length 47 [2024-11-13 14:14:39,448 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:14:39,448 INFO L471 AbstractCegarLoop]: Abstraction has 383 states and 491 transitions. [2024-11-13 14:14:39,449 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 25 states have (on average 1.6) internal successors, (40), 20 states have internal predecessors, (40), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-13 14:14:39,449 INFO L276 IsEmpty]: Start isEmpty. Operand 383 states and 491 transitions. [2024-11-13 14:14:39,449 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2024-11-13 14:14:39,450 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:14:39,450 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:14:39,478 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dfa83519-f527-4546-a5cf-0431219e848a/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Ended with exit code 0 [2024-11-13 14:14:39,650 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dfa83519-f527-4546-a5cf-0431219e848a/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:14:39,652 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting free_reportsErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [free_reportsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 77 more)] === [2024-11-13 14:14:39,653 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:14:39,653 INFO L85 PathProgramCache]: Analyzing trace with hash -964498059, now seen corresponding path program 1 times [2024-11-13 14:14:39,654 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-13 14:14:39,654 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1401569358] [2024-11-13 14:14:39,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:14:39,654 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:14:39,654 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dfa83519-f527-4546-a5cf-0431219e848a/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:14:39,657 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dfa83519-f527-4546-a5cf-0431219e848a/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 14:14:39,659 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dfa83519-f527-4546-a5cf-0431219e848a/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2024-11-13 14:14:39,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:14:39,983 INFO L255 TraceCheckSpWp]: Trace formula consists of 243 conjuncts, 88 conjuncts are in the unsatisfiable core [2024-11-13 14:14:39,990 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 14:14:40,280 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2024-11-13 14:14:40,530 INFO L349 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2024-11-13 14:14:40,530 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 [2024-11-13 14:14:41,262 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 [2024-11-13 14:14:41,310 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 [2024-11-13 14:14:41,587 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 11 [2024-11-13 14:14:41,660 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 21 treesize of output 20 [2024-11-13 14:14:42,080 INFO L349 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2024-11-13 14:14:42,081 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 7 [2024-11-13 14:14:42,359 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 46 treesize of output 37 [2024-11-13 14:14:42,433 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2024-11-13 14:14:42,860 INFO L349 Elim1Store]: treesize reduction 98, result has 30.0 percent of original size [2024-11-13 14:14:42,861 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 7 case distinctions, treesize of input 39 treesize of output 60 [2024-11-13 14:14:43,217 INFO L349 Elim1Store]: treesize reduction 13, result has 7.1 percent of original size [2024-11-13 14:14:43,218 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 16 [2024-11-13 14:14:44,046 INFO L349 Elim1Store]: treesize reduction 32, result has 34.7 percent of original size [2024-11-13 14:14:44,047 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 31 treesize of output 35 [2024-11-13 14:14:44,765 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 25 [2024-11-13 14:14:44,787 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-13 14:14:44,788 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 69 treesize of output 53 [2024-11-13 14:14:45,349 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 14:14:45,351 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 25 [2024-11-13 14:14:45,405 INFO L349 Elim1Store]: treesize reduction 29, result has 19.4 percent of original size [2024-11-13 14:14:45,405 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 15 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 7 case distinctions, treesize of input 101 treesize of output 56 [2024-11-13 14:14:47,836 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-11-13 14:14:47,837 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 6 case distinctions, treesize of input 85 treesize of output 40 [2024-11-13 14:14:47,854 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 0 case distinctions, treesize of input 15 treesize of output 7 [2024-11-13 14:14:48,235 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:14:48,235 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 14:14:48,235 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-13 14:14:48,235 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1401569358] [2024-11-13 14:14:48,235 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1401569358] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 14:14:48,235 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 14:14:48,235 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [27] imperfect sequences [] total 27 [2024-11-13 14:14:48,235 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2010318946] [2024-11-13 14:14:48,236 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 14:14:48,236 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2024-11-13 14:14:48,236 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-13 14:14:48,237 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2024-11-13 14:14:48,237 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=735, Unknown=0, NotChecked=0, Total=812 [2024-11-13 14:14:48,237 INFO L87 Difference]: Start difference. First operand 383 states and 491 transitions. Second operand has 29 states, 25 states have (on average 1.6) internal successors, (40), 21 states have internal predecessors, (40), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-13 14:15:11,437 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:15:11,438 INFO L93 Difference]: Finished difference Result 476 states and 530 transitions. [2024-11-13 14:15:11,438 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2024-11-13 14:15:11,438 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 25 states have (on average 1.6) internal successors, (40), 21 states have internal predecessors, (40), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 47 [2024-11-13 14:15:11,439 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:15:11,440 INFO L225 Difference]: With dead ends: 476 [2024-11-13 14:15:11,440 INFO L226 Difference]: Without dead ends: 476 [2024-11-13 14:15:11,441 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 831 ImplicationChecksByTransitivity, 10.4s TimeCoverageRelationStatistics Valid=317, Invalid=3223, Unknown=0, NotChecked=0, Total=3540 [2024-11-13 14:15:11,442 INFO L432 NwaCegarLoop]: 87 mSDtfsCounter, 748 mSDsluCounter, 1587 mSDsCounter, 0 mSdLazyCounter, 3383 mSolverCounterSat, 76 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 15.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 750 SdHoareTripleChecker+Valid, 1674 SdHoareTripleChecker+Invalid, 3459 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 76 IncrementalHoareTripleChecker+Valid, 3383 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 16.7s IncrementalHoareTripleChecker+Time [2024-11-13 14:15:11,442 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [750 Valid, 1674 Invalid, 3459 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [76 Valid, 3383 Invalid, 0 Unknown, 0 Unchecked, 16.7s Time] [2024-11-13 14:15:11,443 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 476 states. [2024-11-13 14:15:11,451 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 476 to 371. [2024-11-13 14:15:11,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 371 states, 287 states have (on average 1.470383275261324) internal successors, (422), 341 states have internal predecessors, (422), 15 states have call successors, (15), 14 states have call predecessors, (15), 15 states have return successors, (19), 15 states have call predecessors, (19), 15 states have call successors, (19) [2024-11-13 14:15:11,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 371 states to 371 states and 456 transitions. [2024-11-13 14:15:11,454 INFO L78 Accepts]: Start accepts. Automaton has 371 states and 456 transitions. Word has length 47 [2024-11-13 14:15:11,454 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:15:11,454 INFO L471 AbstractCegarLoop]: Abstraction has 371 states and 456 transitions. [2024-11-13 14:15:11,455 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 25 states have (on average 1.6) internal successors, (40), 21 states have internal predecessors, (40), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-13 14:15:11,455 INFO L276 IsEmpty]: Start isEmpty. Operand 371 states and 456 transitions. [2024-11-13 14:15:11,455 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2024-11-13 14:15:11,455 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:15:11,456 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:15:11,481 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dfa83519-f527-4546-a5cf-0431219e848a/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Forceful destruction successful, exit code 0 [2024-11-13 14:15:11,656 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dfa83519-f527-4546-a5cf-0431219e848a/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:15:11,656 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr18REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [free_reportsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 77 more)] === [2024-11-13 14:15:11,656 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:15:11,657 INFO L85 PathProgramCache]: Analyzing trace with hash -1206194293, now seen corresponding path program 1 times [2024-11-13 14:15:11,657 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-13 14:15:11,657 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [347386148] [2024-11-13 14:15:11,657 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:15:11,657 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:15:11,657 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dfa83519-f527-4546-a5cf-0431219e848a/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:15:11,660 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dfa83519-f527-4546-a5cf-0431219e848a/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 14:15:11,662 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dfa83519-f527-4546-a5cf-0431219e848a/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2024-11-13 14:15:11,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:15:11,950 INFO L255 TraceCheckSpWp]: Trace formula consists of 315 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-13 14:15:11,952 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 14:15:11,960 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2024-11-13 14:15:12,244 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:15:12,244 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 14:15:12,244 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-13 14:15:12,244 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [347386148] [2024-11-13 14:15:12,244 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [347386148] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 14:15:12,244 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 14:15:12,245 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-13 14:15:12,245 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1920002712] [2024-11-13 14:15:12,245 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 14:15:12,245 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-13 14:15:12,245 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-13 14:15:12,246 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-13 14:15:12,246 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-13 14:15:12,246 INFO L87 Difference]: Start difference. First operand 371 states and 456 transitions. Second operand has 7 states, 6 states have (on average 6.666666666666667) internal successors, (40), 6 states have internal predecessors, (40), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2024-11-13 14:15:14,068 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:15:14,068 INFO L93 Difference]: Finished difference Result 380 states and 454 transitions. [2024-11-13 14:15:14,069 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-13 14:15:14,069 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 6.666666666666667) internal successors, (40), 6 states have internal predecessors, (40), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 46 [2024-11-13 14:15:14,070 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:15:14,071 INFO L225 Difference]: With dead ends: 380 [2024-11-13 14:15:14,071 INFO L226 Difference]: Without dead ends: 380 [2024-11-13 14:15:14,071 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-11-13 14:15:14,072 INFO L432 NwaCegarLoop]: 161 mSDtfsCounter, 32 mSDsluCounter, 520 mSDsCounter, 0 mSdLazyCounter, 421 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 681 SdHoareTripleChecker+Invalid, 424 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 421 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2024-11-13 14:15:14,072 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [32 Valid, 681 Invalid, 424 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 421 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2024-11-13 14:15:14,073 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 380 states. [2024-11-13 14:15:14,080 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 380 to 370. [2024-11-13 14:15:14,081 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 370 states, 287 states have (on average 1.456445993031359) internal successors, (418), 340 states have internal predecessors, (418), 15 states have call successors, (15), 14 states have call predecessors, (15), 15 states have return successors, (19), 15 states have call predecessors, (19), 15 states have call successors, (19) [2024-11-13 14:15:14,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 370 states to 370 states and 452 transitions. [2024-11-13 14:15:14,083 INFO L78 Accepts]: Start accepts. Automaton has 370 states and 452 transitions. Word has length 46 [2024-11-13 14:15:14,083 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:15:14,083 INFO L471 AbstractCegarLoop]: Abstraction has 370 states and 452 transitions. [2024-11-13 14:15:14,083 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 6.666666666666667) internal successors, (40), 6 states have internal predecessors, (40), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2024-11-13 14:15:14,084 INFO L276 IsEmpty]: Start isEmpty. Operand 370 states and 452 transitions. [2024-11-13 14:15:14,084 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2024-11-13 14:15:14,084 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:15:14,084 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:15:14,110 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dfa83519-f527-4546-a5cf-0431219e848a/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Forceful destruction successful, exit code 0 [2024-11-13 14:15:14,285 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dfa83519-f527-4546-a5cf-0431219e848a/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:15:14,285 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr19REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [free_reportsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 77 more)] === [2024-11-13 14:15:14,285 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:15:14,285 INFO L85 PathProgramCache]: Analyzing trace with hash -1206194292, now seen corresponding path program 1 times [2024-11-13 14:15:14,286 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-13 14:15:14,286 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1791659389] [2024-11-13 14:15:14,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:15:14,286 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:15:14,286 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dfa83519-f527-4546-a5cf-0431219e848a/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:15:14,288 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dfa83519-f527-4546-a5cf-0431219e848a/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 14:15:14,290 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dfa83519-f527-4546-a5cf-0431219e848a/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2024-11-13 14:15:14,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:15:14,597 INFO L255 TraceCheckSpWp]: Trace formula consists of 315 conjuncts, 20 conjuncts are in the unsatisfiable core [2024-11-13 14:15:14,599 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 14:15:14,607 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2024-11-13 14:15:15,153 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:15:15,154 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 14:15:15,154 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-13 14:15:15,154 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1791659389] [2024-11-13 14:15:15,154 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1791659389] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 14:15:15,154 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 14:15:15,154 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-13 14:15:15,154 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1222077073] [2024-11-13 14:15:15,154 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 14:15:15,155 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-13 14:15:15,155 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-13 14:15:15,155 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-13 14:15:15,155 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-13 14:15:15,156 INFO L87 Difference]: Start difference. First operand 370 states and 452 transitions. Second operand has 7 states, 6 states have (on average 6.666666666666667) internal successors, (40), 6 states have internal predecessors, (40), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2024-11-13 14:15:16,988 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:15:16,988 INFO L93 Difference]: Finished difference Result 378 states and 452 transitions. [2024-11-13 14:15:16,989 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-13 14:15:16,989 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 6.666666666666667) internal successors, (40), 6 states have internal predecessors, (40), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 46 [2024-11-13 14:15:16,990 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:15:16,991 INFO L225 Difference]: With dead ends: 378 [2024-11-13 14:15:16,991 INFO L226 Difference]: Without dead ends: 378 [2024-11-13 14:15:16,991 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-11-13 14:15:16,992 INFO L432 NwaCegarLoop]: 160 mSDtfsCounter, 28 mSDsluCounter, 581 mSDsCounter, 0 mSdLazyCounter, 362 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 741 SdHoareTripleChecker+Invalid, 363 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 362 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2024-11-13 14:15:16,992 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [29 Valid, 741 Invalid, 363 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 362 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2024-11-13 14:15:16,993 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 378 states. [2024-11-13 14:15:17,000 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 378 to 370. [2024-11-13 14:15:17,001 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 370 states, 287 states have (on average 1.4494773519163764) internal successors, (416), 340 states have internal predecessors, (416), 15 states have call successors, (15), 14 states have call predecessors, (15), 15 states have return successors, (19), 15 states have call predecessors, (19), 15 states have call successors, (19) [2024-11-13 14:15:17,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 370 states to 370 states and 450 transitions. [2024-11-13 14:15:17,003 INFO L78 Accepts]: Start accepts. Automaton has 370 states and 450 transitions. Word has length 46 [2024-11-13 14:15:17,003 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:15:17,003 INFO L471 AbstractCegarLoop]: Abstraction has 370 states and 450 transitions. [2024-11-13 14:15:17,004 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 6.666666666666667) internal successors, (40), 6 states have internal predecessors, (40), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2024-11-13 14:15:17,004 INFO L276 IsEmpty]: Start isEmpty. Operand 370 states and 450 transitions. [2024-11-13 14:15:17,004 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2024-11-13 14:15:17,005 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:15:17,005 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:15:17,034 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dfa83519-f527-4546-a5cf-0431219e848a/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Ended with exit code 0 [2024-11-13 14:15:17,205 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dfa83519-f527-4546-a5cf-0431219e848a/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:15:17,205 INFO L396 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr22REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [free_reportsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 77 more)] === [2024-11-13 14:15:17,206 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:15:17,206 INFO L85 PathProgramCache]: Analyzing trace with hash -2037655240, now seen corresponding path program 1 times [2024-11-13 14:15:17,206 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-13 14:15:17,206 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1282208354] [2024-11-13 14:15:17,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:15:17,207 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:15:17,207 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dfa83519-f527-4546-a5cf-0431219e848a/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:15:17,209 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dfa83519-f527-4546-a5cf-0431219e848a/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 14:15:17,210 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dfa83519-f527-4546-a5cf-0431219e848a/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2024-11-13 14:15:17,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:15:17,598 INFO L255 TraceCheckSpWp]: Trace formula consists of 332 conjuncts, 31 conjuncts are in the unsatisfiable core [2024-11-13 14:15:17,602 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 14:15:17,728 INFO L349 Elim1Store]: treesize reduction 24, result has 33.3 percent of original size [2024-11-13 14:15:17,729 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 21 treesize of output 20 [2024-11-13 14:15:18,097 INFO L349 Elim1Store]: treesize reduction 24, result has 33.3 percent of original size [2024-11-13 14:15:18,098 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 21 treesize of output 20 [2024-11-13 14:15:18,282 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 [2024-11-13 14:15:18,478 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 10 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 48 treesize of output 15 [2024-11-13 14:15:18,780 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 19 treesize of output 11 [2024-11-13 14:15:18,920 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:15:18,920 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 14:15:18,920 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-13 14:15:18,920 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1282208354] [2024-11-13 14:15:18,920 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1282208354] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 14:15:18,920 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 14:15:18,920 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-11-13 14:15:18,920 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [266407128] [2024-11-13 14:15:18,921 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 14:15:18,921 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-13 14:15:18,921 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-13 14:15:18,921 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-13 14:15:18,922 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=131, Unknown=0, NotChecked=0, Total=156 [2024-11-13 14:15:18,922 INFO L87 Difference]: Start difference. First operand 370 states and 450 transitions. Second operand has 13 states, 11 states have (on average 3.909090909090909) internal successors, (43), 11 states have internal predecessors, (43), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-13 14:15:23,411 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:15:23,411 INFO L93 Difference]: Finished difference Result 388 states and 457 transitions. [2024-11-13 14:15:23,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-13 14:15:23,411 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 11 states have (on average 3.909090909090909) internal successors, (43), 11 states have internal predecessors, (43), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 49 [2024-11-13 14:15:23,412 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:15:23,413 INFO L225 Difference]: With dead ends: 388 [2024-11-13 14:15:23,413 INFO L226 Difference]: Without dead ends: 388 [2024-11-13 14:15:23,414 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=61, Invalid=245, Unknown=0, NotChecked=0, Total=306 [2024-11-13 14:15:23,414 INFO L432 NwaCegarLoop]: 101 mSDtfsCounter, 309 mSDsluCounter, 676 mSDsCounter, 0 mSdLazyCounter, 1004 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 311 SdHoareTripleChecker+Valid, 777 SdHoareTripleChecker+Invalid, 1022 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 1004 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.1s IncrementalHoareTripleChecker+Time [2024-11-13 14:15:23,414 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [311 Valid, 777 Invalid, 1022 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 1004 Invalid, 0 Unknown, 0 Unchecked, 4.1s Time] [2024-11-13 14:15:23,415 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 388 states. [2024-11-13 14:15:23,426 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 388 to 368. [2024-11-13 14:15:23,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 368 states, 287 states have (on average 1.4355400696864111) internal successors, (412), 338 states have internal predecessors, (412), 15 states have call successors, (15), 14 states have call predecessors, (15), 15 states have return successors, (19), 15 states have call predecessors, (19), 15 states have call successors, (19) [2024-11-13 14:15:23,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 368 states to 368 states and 446 transitions. [2024-11-13 14:15:23,429 INFO L78 Accepts]: Start accepts. Automaton has 368 states and 446 transitions. Word has length 49 [2024-11-13 14:15:23,429 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:15:23,429 INFO L471 AbstractCegarLoop]: Abstraction has 368 states and 446 transitions. [2024-11-13 14:15:23,430 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 11 states have (on average 3.909090909090909) internal successors, (43), 11 states have internal predecessors, (43), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-13 14:15:23,430 INFO L276 IsEmpty]: Start isEmpty. Operand 368 states and 446 transitions. [2024-11-13 14:15:23,430 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2024-11-13 14:15:23,431 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:15:23,431 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:15:23,457 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dfa83519-f527-4546-a5cf-0431219e848a/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Ended with exit code 0 [2024-11-13 14:15:23,634 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dfa83519-f527-4546-a5cf-0431219e848a/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:15:23,635 INFO L396 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr23REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [free_reportsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 77 more)] === [2024-11-13 14:15:23,635 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:15:23,635 INFO L85 PathProgramCache]: Analyzing trace with hash -2037655239, now seen corresponding path program 1 times [2024-11-13 14:15:23,635 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-13 14:15:23,636 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1993168923] [2024-11-13 14:15:23,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:15:23,636 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:15:23,636 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dfa83519-f527-4546-a5cf-0431219e848a/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:15:23,638 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dfa83519-f527-4546-a5cf-0431219e848a/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 14:15:23,639 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dfa83519-f527-4546-a5cf-0431219e848a/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Waiting until timeout for monitored process [2024-11-13 14:15:23,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:15:23,990 INFO L255 TraceCheckSpWp]: Trace formula consists of 332 conjuncts, 55 conjuncts are in the unsatisfiable core [2024-11-13 14:15:23,996 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 14:15:24,232 WARN L873 $PredicateComparison]: unable to prove that (exists ((|ldv_malloc_#res.base| (_ BitVec 32))) (and (= (store |c_old(#length)| |ldv_malloc_#res.base| (select |c_#length| |ldv_malloc_#res.base|)) |c_#length|) (= (_ bv0 1) (select |c_old(#valid)| |ldv_malloc_#res.base|)))) is different from true [2024-11-13 14:15:24,273 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 14:15:24,273 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 9 [2024-11-13 14:15:24,496 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 14:15:24,499 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 9 [2024-11-13 14:15:24,834 INFO L349 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2024-11-13 14:15:24,835 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 14 [2024-11-13 14:15:25,142 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-13 14:15:25,164 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 [2024-11-13 14:15:25,462 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 10 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 44 treesize of output 11 [2024-11-13 14:15:25,487 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 10 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 44 treesize of output 11 [2024-11-13 14:15:26,579 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:15:26,579 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 14:15:26,579 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-13 14:15:26,579 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1993168923] [2024-11-13 14:15:26,579 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1993168923] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 14:15:26,579 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 14:15:26,579 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2024-11-13 14:15:26,580 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [846538758] [2024-11-13 14:15:26,580 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 14:15:26,580 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-13 14:15:26,580 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-13 14:15:26,581 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-13 14:15:26,581 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=228, Unknown=1, NotChecked=30, Total=306 [2024-11-13 14:15:26,581 INFO L87 Difference]: Start difference. First operand 368 states and 446 transitions. Second operand has 18 states, 16 states have (on average 2.6875) internal successors, (43), 15 states have internal predecessors, (43), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-13 14:15:37,170 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:15:37,170 INFO L93 Difference]: Finished difference Result 415 states and 476 transitions. [2024-11-13 14:15:37,171 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-11-13 14:15:37,171 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 16 states have (on average 2.6875) internal successors, (43), 15 states have internal predecessors, (43), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) Word has length 49 [2024-11-13 14:15:37,171 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:15:37,172 INFO L225 Difference]: With dead ends: 415 [2024-11-13 14:15:37,172 INFO L226 Difference]: Without dead ends: 415 [2024-11-13 14:15:37,173 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 151 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=170, Invalid=889, Unknown=1, NotChecked=62, Total=1122 [2024-11-13 14:15:37,173 INFO L432 NwaCegarLoop]: 71 mSDtfsCounter, 479 mSDsluCounter, 736 mSDsCounter, 0 mSdLazyCounter, 1881 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 481 SdHoareTripleChecker+Valid, 807 SdHoareTripleChecker+Invalid, 2216 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 1881 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 289 IncrementalHoareTripleChecker+Unchecked, 8.5s IncrementalHoareTripleChecker+Time [2024-11-13 14:15:37,174 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [481 Valid, 807 Invalid, 2216 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 1881 Invalid, 0 Unknown, 289 Unchecked, 8.5s Time] [2024-11-13 14:15:37,175 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 415 states. [2024-11-13 14:15:37,181 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 415 to 367. [2024-11-13 14:15:37,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 367 states, 287 states have (on average 1.4181184668989546) internal successors, (407), 337 states have internal predecessors, (407), 15 states have call successors, (15), 14 states have call predecessors, (15), 15 states have return successors, (19), 15 states have call predecessors, (19), 15 states have call successors, (19) [2024-11-13 14:15:37,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 367 states to 367 states and 441 transitions. [2024-11-13 14:15:37,184 INFO L78 Accepts]: Start accepts. Automaton has 367 states and 441 transitions. Word has length 49 [2024-11-13 14:15:37,184 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:15:37,184 INFO L471 AbstractCegarLoop]: Abstraction has 367 states and 441 transitions. [2024-11-13 14:15:37,184 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 16 states have (on average 2.6875) internal successors, (43), 15 states have internal predecessors, (43), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-13 14:15:37,185 INFO L276 IsEmpty]: Start isEmpty. Operand 367 states and 441 transitions. [2024-11-13 14:15:37,185 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2024-11-13 14:15:37,185 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:15:37,186 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:15:37,216 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dfa83519-f527-4546-a5cf-0431219e848a/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Ended with exit code 0 [2024-11-13 14:15:37,386 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dfa83519-f527-4546-a5cf-0431219e848a/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:15:37,386 INFO L396 AbstractCegarLoop]: === Iteration 32 === Targeting ldv_list_delErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [free_reportsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 77 more)] === [2024-11-13 14:15:37,387 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:15:37,387 INFO L85 PathProgramCache]: Analyzing trace with hash 738364665, now seen corresponding path program 1 times [2024-11-13 14:15:37,387 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-13 14:15:37,387 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1664493781] [2024-11-13 14:15:37,387 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:15:37,387 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:15:37,388 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dfa83519-f527-4546-a5cf-0431219e848a/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:15:37,390 INFO L229 MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dfa83519-f527-4546-a5cf-0431219e848a/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 14:15:37,391 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dfa83519-f527-4546-a5cf-0431219e848a/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Waiting until timeout for monitored process [2024-11-13 14:15:37,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:15:37,682 INFO L255 TraceCheckSpWp]: Trace formula consists of 262 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-13 14:15:37,684 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 14:15:37,803 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:15:37,803 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 14:15:37,803 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-13 14:15:37,803 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1664493781] [2024-11-13 14:15:37,803 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1664493781] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 14:15:37,803 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 14:15:37,803 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-13 14:15:37,803 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1451646359] [2024-11-13 14:15:37,803 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 14:15:37,804 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-13 14:15:37,804 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-13 14:15:37,805 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-13 14:15:37,805 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-13 14:15:37,805 INFO L87 Difference]: Start difference. First operand 367 states and 441 transitions. Second operand has 5 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2024-11-13 14:15:38,953 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:15:38,953 INFO L93 Difference]: Finished difference Result 386 states and 459 transitions. [2024-11-13 14:15:38,953 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-13 14:15:38,953 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 52 [2024-11-13 14:15:38,954 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:15:38,955 INFO L225 Difference]: With dead ends: 386 [2024-11-13 14:15:38,955 INFO L226 Difference]: Without dead ends: 386 [2024-11-13 14:15:38,955 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-13 14:15:38,955 INFO L432 NwaCegarLoop]: 167 mSDtfsCounter, 18 mSDsluCounter, 316 mSDsCounter, 0 mSdLazyCounter, 242 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 483 SdHoareTripleChecker+Invalid, 246 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 242 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-11-13 14:15:38,956 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 483 Invalid, 246 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 242 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-11-13 14:15:38,959 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 386 states. [2024-11-13 14:15:38,966 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 386 to 379. [2024-11-13 14:15:38,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 379 states, 298 states have (on average 1.419463087248322) internal successors, (423), 347 states have internal predecessors, (423), 16 states have call successors, (16), 15 states have call predecessors, (16), 16 states have return successors, (20), 16 states have call predecessors, (20), 16 states have call successors, (20) [2024-11-13 14:15:38,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 379 states to 379 states and 459 transitions. [2024-11-13 14:15:38,969 INFO L78 Accepts]: Start accepts. Automaton has 379 states and 459 transitions. Word has length 52 [2024-11-13 14:15:38,969 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:15:38,969 INFO L471 AbstractCegarLoop]: Abstraction has 379 states and 459 transitions. [2024-11-13 14:15:38,969 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2024-11-13 14:15:38,969 INFO L276 IsEmpty]: Start isEmpty. Operand 379 states and 459 transitions. [2024-11-13 14:15:38,970 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2024-11-13 14:15:38,970 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:15:38,970 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:15:38,999 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dfa83519-f527-4546-a5cf-0431219e848a/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Ended with exit code 0 [2024-11-13 14:15:39,171 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dfa83519-f527-4546-a5cf-0431219e848a/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:15:39,171 INFO L396 AbstractCegarLoop]: === Iteration 33 === Targeting ldv_list_delErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [free_reportsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 77 more)] === [2024-11-13 14:15:39,171 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:15:39,171 INFO L85 PathProgramCache]: Analyzing trace with hash 738364666, now seen corresponding path program 1 times [2024-11-13 14:15:39,172 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-13 14:15:39,172 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1464298209] [2024-11-13 14:15:39,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:15:39,172 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:15:39,172 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dfa83519-f527-4546-a5cf-0431219e848a/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:15:39,174 INFO L229 MonitoredProcess]: Starting monitored process 34 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dfa83519-f527-4546-a5cf-0431219e848a/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 14:15:39,175 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dfa83519-f527-4546-a5cf-0431219e848a/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Waiting until timeout for monitored process [2024-11-13 14:15:39,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:15:39,502 INFO L255 TraceCheckSpWp]: Trace formula consists of 262 conjuncts, 86 conjuncts are in the unsatisfiable core [2024-11-13 14:15:39,509 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 14:15:39,808 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2024-11-13 14:15:40,043 INFO L349 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2024-11-13 14:15:40,043 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 [2024-11-13 14:15:40,821 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 [2024-11-13 14:15:40,858 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-13 14:15:41,104 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 11 [2024-11-13 14:15:41,135 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 21 treesize of output 20 [2024-11-13 14:15:41,510 INFO L349 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2024-11-13 14:15:41,510 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 7 [2024-11-13 14:15:41,812 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 23 treesize of output 22 [2024-11-13 14:15:41,850 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 46 treesize of output 37 [2024-11-13 14:15:42,350 INFO L349 Elim1Store]: treesize reduction 98, result has 30.0 percent of original size [2024-11-13 14:15:42,350 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 7 case distinctions, treesize of input 39 treesize of output 60 [2024-11-13 14:15:42,728 INFO L349 Elim1Store]: treesize reduction 13, result has 7.1 percent of original size [2024-11-13 14:15:42,728 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 16 [2024-11-13 14:15:43,573 INFO L349 Elim1Store]: treesize reduction 32, result has 34.7 percent of original size [2024-11-13 14:15:43,573 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 31 treesize of output 35 [2024-11-13 14:15:44,357 INFO L349 Elim1Store]: treesize reduction 25, result has 16.7 percent of original size [2024-11-13 14:15:44,357 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 74 treesize of output 57 [2024-11-13 14:15:44,387 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 25 [2024-11-13 14:15:44,807 INFO L349 Elim1Store]: treesize reduction 25, result has 16.7 percent of original size [2024-11-13 14:15:44,807 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 74 treesize of output 57 [2024-11-13 14:15:44,829 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 25 [2024-11-13 14:15:45,688 INFO L349 Elim1Store]: treesize reduction 15, result has 37.5 percent of original size [2024-11-13 14:15:45,689 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 9 [2024-11-13 14:15:47,095 INFO L349 Elim1Store]: treesize reduction 42, result has 6.7 percent of original size [2024-11-13 14:15:47,096 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 6 case distinctions, treesize of input 64 treesize of output 30 [2024-11-13 14:15:47,106 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 0 case distinctions, treesize of input 15 treesize of output 7 [2024-11-13 14:15:47,134 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 7 treesize of output 5 [2024-11-13 14:15:47,575 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:15:47,575 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 14:15:47,575 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-13 14:15:47,576 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1464298209] [2024-11-13 14:15:47,576 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1464298209] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 14:15:47,576 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 14:15:47,576 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [27] imperfect sequences [] total 27 [2024-11-13 14:15:47,576 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [934107743] [2024-11-13 14:15:47,576 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 14:15:47,576 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2024-11-13 14:15:47,576 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-13 14:15:47,577 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2024-11-13 14:15:47,577 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=674, Unknown=0, NotChecked=0, Total=756 [2024-11-13 14:15:47,577 INFO L87 Difference]: Start difference. First operand 379 states and 459 transitions. Second operand has 28 states, 25 states have (on average 1.76) internal successors, (44), 20 states have internal predecessors, (44), 5 states have call successors, (5), 5 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-13 14:16:04,022 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:16:04,022 INFO L93 Difference]: Finished difference Result 451 states and 494 transitions. [2024-11-13 14:16:04,023 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2024-11-13 14:16:04,023 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 25 states have (on average 1.76) internal successors, (44), 20 states have internal predecessors, (44), 5 states have call successors, (5), 5 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 52 [2024-11-13 14:16:04,023 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:16:04,024 INFO L225 Difference]: With dead ends: 451 [2024-11-13 14:16:04,024 INFO L226 Difference]: Without dead ends: 451 [2024-11-13 14:16:04,024 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 865 ImplicationChecksByTransitivity, 10.7s TimeCoverageRelationStatistics Valid=374, Invalid=3048, Unknown=0, NotChecked=0, Total=3422 [2024-11-13 14:16:04,025 INFO L432 NwaCegarLoop]: 85 mSDtfsCounter, 747 mSDsluCounter, 1232 mSDsCounter, 0 mSdLazyCounter, 2006 mSolverCounterSat, 73 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 749 SdHoareTripleChecker+Valid, 1317 SdHoareTripleChecker+Invalid, 2079 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 73 IncrementalHoareTripleChecker+Valid, 2006 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.4s IncrementalHoareTripleChecker+Time [2024-11-13 14:16:04,025 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [749 Valid, 1317 Invalid, 2079 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [73 Valid, 2006 Invalid, 0 Unknown, 0 Unchecked, 9.4s Time] [2024-11-13 14:16:04,025 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 451 states. [2024-11-13 14:16:04,033 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 451 to 368. [2024-11-13 14:16:04,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 368 states, 289 states have (on average 1.4013840830449826) internal successors, (405), 338 states have internal predecessors, (405), 15 states have call successors, (15), 14 states have call predecessors, (15), 15 states have return successors, (19), 15 states have call predecessors, (19), 15 states have call successors, (19) [2024-11-13 14:16:04,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 368 states to 368 states and 439 transitions. [2024-11-13 14:16:04,035 INFO L78 Accepts]: Start accepts. Automaton has 368 states and 439 transitions. Word has length 52 [2024-11-13 14:16:04,035 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:16:04,035 INFO L471 AbstractCegarLoop]: Abstraction has 368 states and 439 transitions. [2024-11-13 14:16:04,035 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 25 states have (on average 1.76) internal successors, (44), 20 states have internal predecessors, (44), 5 states have call successors, (5), 5 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-13 14:16:04,035 INFO L276 IsEmpty]: Start isEmpty. Operand 368 states and 439 transitions. [2024-11-13 14:16:04,036 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2024-11-13 14:16:04,036 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:16:04,036 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:16:04,059 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dfa83519-f527-4546-a5cf-0431219e848a/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Ended with exit code 0 [2024-11-13 14:16:04,240 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dfa83519-f527-4546-a5cf-0431219e848a/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:16:04,241 INFO L396 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr24REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [free_reportsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 77 more)] === [2024-11-13 14:16:04,241 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:16:04,241 INFO L85 PathProgramCache]: Analyzing trace with hash 318405721, now seen corresponding path program 1 times [2024-11-13 14:16:04,241 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-13 14:16:04,241 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1293859082] [2024-11-13 14:16:04,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:16:04,242 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:16:04,242 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dfa83519-f527-4546-a5cf-0431219e848a/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:16:04,243 INFO L229 MonitoredProcess]: Starting monitored process 35 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dfa83519-f527-4546-a5cf-0431219e848a/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 14:16:04,244 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dfa83519-f527-4546-a5cf-0431219e848a/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Waiting until timeout for monitored process [2024-11-13 14:16:04,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:16:04,574 INFO L255 TraceCheckSpWp]: Trace formula consists of 340 conjuncts, 55 conjuncts are in the unsatisfiable core [2024-11-13 14:16:04,578 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 14:16:04,585 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2024-11-13 14:16:04,776 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 [2024-11-13 14:16:04,937 INFO L349 Elim1Store]: treesize reduction 70, result has 30.7 percent of original size [2024-11-13 14:16:04,938 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 30 treesize of output 51 [2024-11-13 14:16:05,068 INFO L349 Elim1Store]: treesize reduction 13, result has 7.1 percent of original size [2024-11-13 14:16:05,069 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 16 [2024-11-13 14:16:05,499 INFO L349 Elim1Store]: treesize reduction 98, result has 30.0 percent of original size [2024-11-13 14:16:05,500 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 7 case distinctions, treesize of input 39 treesize of output 60 [2024-11-13 14:16:06,034 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 15 treesize of output 1 [2024-11-13 14:16:06,090 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 67 treesize of output 31 [2024-11-13 14:16:06,703 INFO L349 Elim1Store]: treesize reduction 240, result has 4.4 percent of original size [2024-11-13 14:16:06,703 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 11 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 115 treesize of output 52 [2024-11-13 14:16:06,737 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 11 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 88 treesize of output 47 [2024-11-13 14:16:08,447 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 59 treesize of output 43 [2024-11-13 14:16:09,156 INFO L349 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2024-11-13 14:16:09,157 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 78 treesize of output 37 [2024-11-13 14:16:09,561 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:16:09,561 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 14:16:09,562 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-13 14:16:09,562 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1293859082] [2024-11-13 14:16:09,562 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1293859082] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 14:16:09,562 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 14:16:09,562 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2024-11-13 14:16:09,562 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1101798442] [2024-11-13 14:16:09,562 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 14:16:09,562 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-11-13 14:16:09,562 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-13 14:16:09,563 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-11-13 14:16:09,563 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=326, Unknown=0, NotChecked=0, Total=380 [2024-11-13 14:16:09,563 INFO L87 Difference]: Start difference. First operand 368 states and 439 transitions. Second operand has 20 states, 18 states have (on average 2.5) internal successors, (45), 17 states have internal predecessors, (45), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-13 14:16:14,311 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-13 14:16:20,072 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-13 14:16:21,664 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.59s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-13 14:16:26,049 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.13s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-13 14:16:30,607 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-13 14:16:31,838 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.23s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-13 14:16:35,963 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-13 14:16:38,524 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.56s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-13 14:16:47,488 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:16:47,488 INFO L93 Difference]: Finished difference Result 382 states and 438 transitions. [2024-11-13 14:16:47,489 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2024-11-13 14:16:47,489 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 18 states have (on average 2.5) internal successors, (45), 17 states have internal predecessors, (45), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 51 [2024-11-13 14:16:47,489 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:16:47,490 INFO L225 Difference]: With dead ends: 382 [2024-11-13 14:16:47,490 INFO L226 Difference]: Without dead ends: 382 [2024-11-13 14:16:47,490 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 32 SyntacticMatches, 1 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 156 ImplicationChecksByTransitivity, 5.7s TimeCoverageRelationStatistics Valid=194, Invalid=1066, Unknown=0, NotChecked=0, Total=1260 [2024-11-13 14:16:47,491 INFO L432 NwaCegarLoop]: 85 mSDtfsCounter, 445 mSDsluCounter, 942 mSDsCounter, 0 mSdLazyCounter, 1763 mSolverCounterSat, 42 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 33.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 447 SdHoareTripleChecker+Valid, 1027 SdHoareTripleChecker+Invalid, 1809 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 1763 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 34.1s IncrementalHoareTripleChecker+Time [2024-11-13 14:16:47,491 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [447 Valid, 1027 Invalid, 1809 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 1763 Invalid, 4 Unknown, 0 Unchecked, 34.1s Time] [2024-11-13 14:16:47,491 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 382 states. [2024-11-13 14:16:47,496 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 382 to 369. [2024-11-13 14:16:47,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 369 states, 290 states have (on average 1.389655172413793) internal successors, (403), 339 states have internal predecessors, (403), 15 states have call successors, (15), 14 states have call predecessors, (15), 15 states have return successors, (19), 15 states have call predecessors, (19), 15 states have call successors, (19) [2024-11-13 14:16:47,498 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 369 states to 369 states and 437 transitions. [2024-11-13 14:16:47,499 INFO L78 Accepts]: Start accepts. Automaton has 369 states and 437 transitions. Word has length 51 [2024-11-13 14:16:47,499 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:16:47,499 INFO L471 AbstractCegarLoop]: Abstraction has 369 states and 437 transitions. [2024-11-13 14:16:47,499 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 18 states have (on average 2.5) internal successors, (45), 17 states have internal predecessors, (45), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-13 14:16:47,499 INFO L276 IsEmpty]: Start isEmpty. Operand 369 states and 437 transitions. [2024-11-13 14:16:47,500 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2024-11-13 14:16:47,500 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:16:47,500 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:16:47,521 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dfa83519-f527-4546-a5cf-0431219e848a/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Ended with exit code 0 [2024-11-13 14:16:47,700 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dfa83519-f527-4546-a5cf-0431219e848a/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:16:47,701 INFO L396 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr25REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [free_reportsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 77 more)] === [2024-11-13 14:16:47,701 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:16:47,701 INFO L85 PathProgramCache]: Analyzing trace with hash 318405722, now seen corresponding path program 1 times [2024-11-13 14:16:47,701 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-13 14:16:47,701 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [547951296] [2024-11-13 14:16:47,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:16:47,701 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:16:47,701 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dfa83519-f527-4546-a5cf-0431219e848a/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:16:47,703 INFO L229 MonitoredProcess]: Starting monitored process 36 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dfa83519-f527-4546-a5cf-0431219e848a/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 14:16:47,704 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dfa83519-f527-4546-a5cf-0431219e848a/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Waiting until timeout for monitored process [2024-11-13 14:17:07,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-13 14:17:07,370 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-13 14:17:24,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-13 14:17:24,684 INFO L130 FreeRefinementEngine]: Strategy FOX found a feasible trace [2024-11-13 14:17:24,684 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-11-13 14:17:24,685 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr25REQUIRES_VIOLATIONMEMORY_DEREFERENCE (79 of 80 remaining) [2024-11-13 14:17:24,687 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location free_reportsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (78 of 80 remaining) [2024-11-13 14:17:24,687 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location free_reportsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (77 of 80 remaining) [2024-11-13 14:17:24,687 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location free_reportsErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (76 of 80 remaining) [2024-11-13 14:17:24,688 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location free_reportsErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (75 of 80 remaining) [2024-11-13 14:17:24,688 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location free_reportsErr4ASSERT_VIOLATIONMEMORY_FREE (74 of 80 remaining) [2024-11-13 14:17:24,688 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location free_reportsErr5ASSERT_VIOLATIONMEMORY_FREE (73 of 80 remaining) [2024-11-13 14:17:24,688 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location free_reportsErr6ASSERT_VIOLATIONMEMORY_FREE (72 of 80 remaining) [2024-11-13 14:17:24,688 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location free_reportsErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (71 of 80 remaining) [2024-11-13 14:17:24,688 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location free_reportsErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (70 of 80 remaining) [2024-11-13 14:17:24,688 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_list_delErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (69 of 80 remaining) [2024-11-13 14:17:24,688 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_list_delErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (68 of 80 remaining) [2024-11-13 14:17:24,688 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_list_delErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (67 of 80 remaining) [2024-11-13 14:17:24,688 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_list_delErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (66 of 80 remaining) [2024-11-13 14:17:24,688 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_list_delErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (65 of 80 remaining) [2024-11-13 14:17:24,688 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_list_delErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (64 of 80 remaining) [2024-11-13 14:17:24,688 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_list_delErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (63 of 80 remaining) [2024-11-13 14:17:24,688 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_list_delErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (62 of 80 remaining) [2024-11-13 14:17:24,688 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location LDV_INIT_LIST_HEADErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (61 of 80 remaining) [2024-11-13 14:17:24,688 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location LDV_INIT_LIST_HEADErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (60 of 80 remaining) [2024-11-13 14:17:24,689 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location LDV_INIT_LIST_HEADErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (59 of 80 remaining) [2024-11-13 14:17:24,689 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location LDV_INIT_LIST_HEADErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (58 of 80 remaining) [2024-11-13 14:17:24,689 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location __ldv_list_addErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (57 of 80 remaining) [2024-11-13 14:17:24,689 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location __ldv_list_addErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (56 of 80 remaining) [2024-11-13 14:17:24,689 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location __ldv_list_addErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (55 of 80 remaining) [2024-11-13 14:17:24,689 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location __ldv_list_addErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (54 of 80 remaining) [2024-11-13 14:17:24,689 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location __ldv_list_addErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (53 of 80 remaining) [2024-11-13 14:17:24,689 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location __ldv_list_addErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (52 of 80 remaining) [2024-11-13 14:17:24,689 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location __ldv_list_addErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (51 of 80 remaining) [2024-11-13 14:17:24,689 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location __ldv_list_addErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (50 of 80 remaining) [2024-11-13 14:17:24,689 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (49 of 80 remaining) [2024-11-13 14:17:24,689 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (48 of 80 remaining) [2024-11-13 14:17:24,689 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (47 of 80 remaining) [2024-11-13 14:17:24,689 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (46 of 80 remaining) [2024-11-13 14:17:24,689 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (45 of 80 remaining) [2024-11-13 14:17:24,689 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (44 of 80 remaining) [2024-11-13 14:17:24,690 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (43 of 80 remaining) [2024-11-13 14:17:24,690 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (42 of 80 remaining) [2024-11-13 14:17:24,690 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (41 of 80 remaining) [2024-11-13 14:17:24,690 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (40 of 80 remaining) [2024-11-13 14:17:24,690 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE (39 of 80 remaining) [2024-11-13 14:17:24,690 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE (38 of 80 remaining) [2024-11-13 14:17:24,690 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr12REQUIRES_VIOLATIONMEMORY_DEREFERENCE (37 of 80 remaining) [2024-11-13 14:17:24,690 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE (36 of 80 remaining) [2024-11-13 14:17:24,690 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr14REQUIRES_VIOLATIONMEMORY_DEREFERENCE (35 of 80 remaining) [2024-11-13 14:17:24,690 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr15REQUIRES_VIOLATIONMEMORY_DEREFERENCE (34 of 80 remaining) [2024-11-13 14:17:24,690 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr16REQUIRES_VIOLATIONMEMORY_DEREFERENCE (33 of 80 remaining) [2024-11-13 14:17:24,690 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr17REQUIRES_VIOLATIONMEMORY_DEREFERENCE (32 of 80 remaining) [2024-11-13 14:17:24,690 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr18REQUIRES_VIOLATIONMEMORY_DEREFERENCE (31 of 80 remaining) [2024-11-13 14:17:24,690 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr19REQUIRES_VIOLATIONMEMORY_DEREFERENCE (30 of 80 remaining) [2024-11-13 14:17:24,690 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr20REQUIRES_VIOLATIONMEMORY_DEREFERENCE (29 of 80 remaining) [2024-11-13 14:17:24,690 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr21REQUIRES_VIOLATIONMEMORY_DEREFERENCE (28 of 80 remaining) [2024-11-13 14:17:24,690 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr22REQUIRES_VIOLATIONMEMORY_DEREFERENCE (27 of 80 remaining) [2024-11-13 14:17:24,691 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr23REQUIRES_VIOLATIONMEMORY_DEREFERENCE (26 of 80 remaining) [2024-11-13 14:17:24,691 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr24REQUIRES_VIOLATIONMEMORY_DEREFERENCE (25 of 80 remaining) [2024-11-13 14:17:24,691 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr26REQUIRES_VIOLATIONMEMORY_DEREFERENCE (24 of 80 remaining) [2024-11-13 14:17:24,691 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr27REQUIRES_VIOLATIONMEMORY_DEREFERENCE (23 of 80 remaining) [2024-11-13 14:17:24,691 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr28REQUIRES_VIOLATIONMEMORY_DEREFERENCE (22 of 80 remaining) [2024-11-13 14:17:24,691 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr29REQUIRES_VIOLATIONMEMORY_DEREFERENCE (21 of 80 remaining) [2024-11-13 14:17:24,691 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr30REQUIRES_VIOLATIONMEMORY_DEREFERENCE (20 of 80 remaining) [2024-11-13 14:17:24,691 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr31REQUIRES_VIOLATIONMEMORY_DEREFERENCE (19 of 80 remaining) [2024-11-13 14:17:24,691 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr32ASSERT_VIOLATIONMEMORY_FREE (18 of 80 remaining) [2024-11-13 14:17:24,691 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr33ASSERT_VIOLATIONMEMORY_FREE (17 of 80 remaining) [2024-11-13 14:17:24,692 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr34ASSERT_VIOLATIONMEMORY_FREE (16 of 80 remaining) [2024-11-13 14:17:24,692 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr35REQUIRES_VIOLATIONMEMORY_DEREFERENCE (15 of 80 remaining) [2024-11-13 14:17:24,693 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr36REQUIRES_VIOLATIONMEMORY_DEREFERENCE (14 of 80 remaining) [2024-11-13 14:17:24,693 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr37ASSERT_VIOLATIONMEMORY_FREE (13 of 80 remaining) [2024-11-13 14:17:24,693 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr38ASSERT_VIOLATIONMEMORY_FREE (12 of 80 remaining) [2024-11-13 14:17:24,693 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr39ASSERT_VIOLATIONMEMORY_FREE (11 of 80 remaining) [2024-11-13 14:17:24,693 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr40ASSERT_VIOLATIONMEMORY_FREE (10 of 80 remaining) [2024-11-13 14:17:24,693 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr41ASSERT_VIOLATIONMEMORY_FREE (9 of 80 remaining) [2024-11-13 14:17:24,693 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr42ASSERT_VIOLATIONMEMORY_FREE (8 of 80 remaining) [2024-11-13 14:17:24,693 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr43REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 80 remaining) [2024-11-13 14:17:24,693 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr44REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 80 remaining) [2024-11-13 14:17:24,694 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr45REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 80 remaining) [2024-11-13 14:17:24,694 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr46REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 80 remaining) [2024-11-13 14:17:24,694 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr47ASSERT_VIOLATIONMEMORY_FREE (3 of 80 remaining) [2024-11-13 14:17:24,694 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr48ASSERT_VIOLATIONMEMORY_FREE (2 of 80 remaining) [2024-11-13 14:17:24,694 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr49ASSERT_VIOLATIONMEMORY_FREE (1 of 80 remaining) [2024-11-13 14:17:24,694 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr50ASSERT_VIOLATIONMEMORY_LEAK (0 of 80 remaining) [2024-11-13 14:17:24,727 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dfa83519-f527-4546-a5cf-0431219e848a/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Ended with exit code 0 [2024-11-13 14:17:24,894 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dfa83519-f527-4546-a5cf-0431219e848a/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:17:24,897 INFO L407 BasicCegarLoop]: Path program 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] [2024-11-13 14:17:24,965 INFO L173 ceAbstractionStarter]: Computing trace abstraction results [2024-11-13 14:17:24,971 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.11 02:17:24 BoogieIcfgContainer [2024-11-13 14:17:24,971 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-11-13 14:17:24,972 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-13 14:17:24,973 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-13 14:17:24,973 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-13 14:17:24,974 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 02:08:36" (3/4) ... [2024-11-13 14:17:24,975 INFO L136 WitnessPrinter]: Generating witness for reachability counterexample [2024-11-13 14:17:25,045 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dfa83519-f527-4546-a5cf-0431219e848a/bin/uautomizer-verify-qhAvR1uOyd/witness.graphml [2024-11-13 14:17:25,045 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-13 14:17:25,046 INFO L158 Benchmark]: Toolchain (without parser) took 531797.03ms. Allocated memory was 83.9MB in the beginning and 192.9MB in the end (delta: 109.1MB). Free memory was 59.5MB in the beginning and 118.6MB in the end (delta: -59.1MB). Peak memory consumption was 48.9MB. Max. memory is 16.1GB. [2024-11-13 14:17:25,046 INFO L158 Benchmark]: CDTParser took 0.51ms. Allocated memory is still 83.9MB. Free memory is still 65.2MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-13 14:17:25,046 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1139.19ms. Allocated memory is still 83.9MB. Free memory was 59.2MB in the beginning and 28.5MB in the end (delta: 30.8MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. [2024-11-13 14:17:25,047 INFO L158 Benchmark]: Boogie Procedure Inliner took 79.29ms. Allocated memory is still 83.9MB. Free memory was 28.5MB in the beginning and 25.7MB in the end (delta: 2.8MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-13 14:17:25,047 INFO L158 Benchmark]: Boogie Preprocessor took 144.41ms. Allocated memory is still 83.9MB. Free memory was 25.7MB in the beginning and 57.9MB in the end (delta: -32.3MB). Peak memory consumption was 12.4MB. Max. memory is 16.1GB. [2024-11-13 14:17:25,047 INFO L158 Benchmark]: RCFGBuilder took 1824.96ms. Allocated memory is still 83.9MB. Free memory was 57.9MB in the beginning and 37.1MB in the end (delta: 20.9MB). Peak memory consumption was 36.6MB. Max. memory is 16.1GB. [2024-11-13 14:17:25,047 INFO L158 Benchmark]: TraceAbstraction took 528524.15ms. Allocated memory was 83.9MB in the beginning and 192.9MB in the end (delta: 109.1MB). Free memory was 36.6MB in the beginning and 122.6MB in the end (delta: -86.0MB). Peak memory consumption was 25.1MB. Max. memory is 16.1GB. [2024-11-13 14:17:25,048 INFO L158 Benchmark]: Witness Printer took 73.81ms. Allocated memory is still 192.9MB. Free memory was 122.6MB in the beginning and 118.6MB in the end (delta: 4.0MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-13 14:17:25,049 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.51ms. Allocated memory is still 83.9MB. Free memory is still 65.2MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 1139.19ms. Allocated memory is still 83.9MB. Free memory was 59.2MB in the beginning and 28.5MB in the end (delta: 30.8MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 79.29ms. Allocated memory is still 83.9MB. Free memory was 28.5MB in the beginning and 25.7MB in the end (delta: 2.8MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 144.41ms. Allocated memory is still 83.9MB. Free memory was 25.7MB in the beginning and 57.9MB in the end (delta: -32.3MB). Peak memory consumption was 12.4MB. Max. memory is 16.1GB. * RCFGBuilder took 1824.96ms. Allocated memory is still 83.9MB. Free memory was 57.9MB in the beginning and 37.1MB in the end (delta: 20.9MB). Peak memory consumption was 36.6MB. Max. memory is 16.1GB. * TraceAbstraction took 528524.15ms. Allocated memory was 83.9MB in the beginning and 192.9MB in the end (delta: 109.1MB). Free memory was 36.6MB in the beginning and 122.6MB in the end (delta: -86.0MB). Peak memory consumption was 25.1MB. Max. memory is 16.1GB. * Witness Printer took 73.81ms. Allocated memory is still 192.9MB. Free memory was 122.6MB in the beginning and 118.6MB in the end (delta: 4.0MB). There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - CounterExampleResult [Line: -1]: pointer dereference may fail pointer dereference may fail We found a FailurePath: [L569] struct ldv_list_head ldv_global_msg_list = { &(ldv_global_msg_list), &(ldv_global_msg_list) }; [L569] struct ldv_list_head ldv_global_msg_list = { &(ldv_global_msg_list), &(ldv_global_msg_list) }; [L569] struct ldv_list_head ldv_global_msg_list = { &(ldv_global_msg_list), &(ldv_global_msg_list) }; [L820-L823] static int (*dispatch_type[])(struct hid_parser *parser, struct hid_item *item) = { hid_parser_main }; [L859] struct hid_device dev; [L859] struct hid_device dev; [L859] struct hid_device dev; VAL [dev={3:0}, dispatch_type={2:0}, ldv_global_msg_list={1:0}] [L867] CALL entry_point() [L861] CALL probe_23(&dev) [L842] int ret = - -3; VAL [dev={3:0}, dev={3:0}, dispatch_type={2:0}, ldv_global_msg_list={1:0}, ret=3] [L843] CALL, EXPR ldv_malloc(sizeof(struct hid_report_enum)) VAL [\old(size)=1036, dev={3:0}, dispatch_type={2:0}, ldv_global_msg_list={1:0}] [L526] COND TRUE __VERIFIER_nondet_int() [L527] return malloc(size); [L843] RET, EXPR ldv_malloc(sizeof(struct hid_report_enum)) VAL [dev={3:0}, dev={3:0}, dispatch_type={2:0}, ldv_global_msg_list={1:0}, ret=3] [L843] struct hid_report_enum *p = (struct hid_report_enum *)ldv_malloc(sizeof(struct hid_report_enum)); [L844] COND FALSE !(p==0) VAL [dev={3:0}, dev={3:0}, dispatch_type={2:0}, ldv_global_msg_list={1:0}, p={8192:0}, ret=3] [L846] CALL LDV_INIT_LIST_HEAD(&p->report_list) VAL [\old(list)={8192:4}, dev={3:0}, dispatch_type={2:0}, ldv_global_msg_list={1:0}] [L540] list->next = list VAL [\old(list)={8192:4}, dev={3:0}, dispatch_type={2:0}, ldv_global_msg_list={1:0}, list={8192:4}] [L541] list->prev = list VAL [\old(list)={8192:4}, dev={3:0}, dispatch_type={2:0}, ldv_global_msg_list={1:0}] [L846] RET LDV_INIT_LIST_HEAD(&p->report_list) VAL [dev={3:0}, dev={3:0}, dispatch_type={2:0}, ldv_global_msg_list={1:0}, p={8192:0}, ret=3] [L847] dev->report_enum = p VAL [dev={3:0}, dispatch_type={2:0}, ldv_global_msg_list={1:0}] [L848] CALL hid_open_report(dev) [L812] struct hid_parser *parser; [L813] struct hid_item item; VAL [dev={3:0}, device={3:0}, dispatch_type={2:0}, item={3084293:0}, ldv_global_msg_list={1:0}] [L814] CALL, EXPR ldv_zalloc(sizeof(struct hid_parser)) VAL [dev={3:0}, dispatch_type={2:0}, ldv_global_msg_list={1:0}] [L533] EXPR, FCALL calloc(size, 1) [L533] return calloc(size, 1); [L814] RET, EXPR ldv_zalloc(sizeof(struct hid_parser)) VAL [dev={3:0}, device={3:0}, dispatch_type={2:0}, item={3084293:0}, ldv_global_msg_list={1:0}] [L814] parser = ldv_zalloc(sizeof(struct hid_parser)) [L815] COND FALSE !(!parser) VAL [dev={3:0}, device={3:0}, dispatch_type={2:0}, item={3084293:0}, ldv_global_msg_list={1:0}, parser={2097152:0}] [L818] parser->device = device VAL [dev={3:0}, dispatch_type={2:0}, ldv_global_msg_list={1:0}] [L819] CALL, EXPR ldv_positive() [L519] int r = __VERIFIER_nondet_int(); [L520] COND TRUE r>0 [L520] return r; VAL [\result=201329708, dev={3:0}, dispatch_type={2:0}, ldv_global_msg_list={1:0}] [L819] RET, EXPR ldv_positive() [L819] parser->report_id = ldv_positive() VAL [dev={3:0}, dispatch_type={2:0}, ldv_global_msg_list={1:0}] [L824] CALL, EXPR fetch_item(&item) [L778] COND FALSE !(__VERIFIER_nondet_int()) [L781] item->type = 0 VAL [dev={3:0}, dispatch_type={2:0}, ldv_global_msg_list={1:0}] [L782] item->a = __VERIFIER_nondet_int() VAL [dev={3:0}, dispatch_type={2:0}, ldv_global_msg_list={1:0}] [L783] item->b = __VERIFIER_nondet_int() VAL [dev={3:0}, dispatch_type={2:0}, ldv_global_msg_list={1:0}] [L784] item->c = __VERIFIER_nondet_int() VAL [dev={3:0}, dispatch_type={2:0}, ldv_global_msg_list={1:0}] [L785] return 0; VAL [\result=0, dev={3:0}, dispatch_type={2:0}, ldv_global_msg_list={1:0}] [L824] RET, EXPR fetch_item(&item) [L824] COND TRUE fetch_item(&item)!=-1 [L825] EXPR item.type VAL [dev={3:0}, dispatch_type={2:0}, ldv_global_msg_list={1:0}] [L825] EXPR dispatch_type[item.type] VAL [dev={3:0}, dispatch_type={2:0}, ldv_global_msg_list={1:0}] [L825] CALL dispatch_type[item.type](parser, &item) [L800] EXPR parser->device VAL [dev={3:0}, dispatch_type={2:0}, ldv_global_msg_list={1:0}] [L800] EXPR parser->report_id VAL [dev={3:0}, dispatch_type={2:0}, ldv_global_msg_list={1:0}] [L800] CALL hid_register_report(parser->device, parser->report_id) [L788] EXPR device->report_enum VAL [dev={3:0}, dispatch_type={2:0}, ldv_global_msg_list={1:0}] [L788] struct hid_report_enum *report_enum = device->report_enum; [L789] struct hid_report *report; VAL [dev={3:0}, dispatch_type={2:0}, id=201329708, ldv_global_msg_list={1:0}, report_enum={8192:0}] [L790] report_enum->report_id_hash[id] - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 808]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 808]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 808]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 830]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 830]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 830]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 834]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 834]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 834]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 853]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 853]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 853]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 839]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 839]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 839]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 866]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 7 procedures, 205 locations, 80 error locations. Started 1 CEGAR loops. OverallTime: 528.4s, OverallIterations: 35, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 382.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 144 mSolverCounterUnknown, 7045 SdHoareTripleChecker+Valid, 250.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 6988 mSDsluCounter, 25196 SdHoareTripleChecker+Invalid, 241.8s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 1670 IncrementalHoareTripleChecker+Unchecked, 20321 mSDsCounter, 669 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 25085 IncrementalHoareTripleChecker+Invalid, 27568 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 669 mSolverCounterUnsat, 4875 mSDtfsCounter, 25085 mSolverCounterSat, 0.4s SdHoareTripleChecker+Time, 144 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1348 GetRequests, 852 SyntacticMatches, 7 SemanticMatches, 489 ConstructedPredicates, 6 IntricatePredicates, 0 DeprecatedPredicates, 3579 ImplicationChecksByTransitivity, 191.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=384occurred in iteration=23, InterpolantAutomatonStates: 413, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.5s AutomataMinimizationTime, 34 MinimizatonAttempts, 988 StatesRemovedByMinimization, 28 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.9s SsaConstructionTime, 21.3s SatisfiabilityAnalysisTime, 93.0s InterpolantComputationTime, 1221 NumberOfCodeBlocks, 1221 NumberOfCodeBlocksAsserted, 35 NumberOfCheckSat, 1136 ConstructedInterpolants, 204 QuantifiedInterpolants, 21235 SizeOfPredicates, 153 NumberOfNonLiveVariables, 6695 ConjunctsInSsa, 769 ConjunctsInUnsatCore, 34 InterpolantComputations, 34 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2024-11-13 14:17:25,137 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dfa83519-f527-4546-a5cf-0431219e848a/bin/uautomizer-verify-qhAvR1uOyd/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE(valid-deref)