./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test6-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version d790fecc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afaf1da2-9026-4419-a97d-8030abe8619e/bin/uautomizer-verify-aQ6SnzHsRB/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afaf1da2-9026-4419-a97d-8030abe8619e/bin/uautomizer-verify-aQ6SnzHsRB/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afaf1da2-9026-4419-a97d-8030abe8619e/bin/uautomizer-verify-aQ6SnzHsRB/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afaf1da2-9026-4419-a97d-8030abe8619e/bin/uautomizer-verify-aQ6SnzHsRB/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test6-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afaf1da2-9026-4419-a97d-8030abe8619e/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afaf1da2-9026-4419-a97d-8030abe8619e/bin/uautomizer-verify-aQ6SnzHsRB --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 8374eced2cbda6aab489eb004cb8e41f23aad88b98cd5c6913f13583171f2c3f --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-11-28 03:13:35,653 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-28 03:13:35,769 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afaf1da2-9026-4419-a97d-8030abe8619e/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2024-11-28 03:13:35,776 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-28 03:13:35,780 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-28 03:13:35,822 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-28 03:13:35,823 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-28 03:13:35,823 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-28 03:13:35,824 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-28 03:13:35,825 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-28 03:13:35,826 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-28 03:13:35,826 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-28 03:13:35,826 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-28 03:13:35,826 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-28 03:13:35,827 INFO L153 SettingsManager]: * Use SBE=true [2024-11-28 03:13:35,828 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-28 03:13:35,828 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-28 03:13:35,828 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-28 03:13:35,829 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-28 03:13:35,829 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-28 03:13:35,829 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-11-28 03:13:35,829 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-11-28 03:13:35,829 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-11-28 03:13:35,829 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-28 03:13:35,829 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-28 03:13:35,829 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-28 03:13:35,830 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-28 03:13:35,830 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-28 03:13:35,830 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-28 03:13:35,830 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-28 03:13:35,830 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 03:13:35,831 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 03:13:35,831 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 03:13:35,831 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 03:13:35,831 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-28 03:13:35,831 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 03:13:35,832 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 03:13:35,832 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 03:13:35,832 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 03:13:35,832 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-28 03:13:35,832 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-28 03:13:35,832 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-28 03:13:35,832 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-28 03:13:35,833 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-28 03:13:35,833 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-28 03:13:35,833 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-28 03:13:35,833 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-28 03:13:35,833 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_afaf1da2-9026-4419-a97d-8030abe8619e/bin/uautomizer-verify-aQ6SnzHsRB Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8374eced2cbda6aab489eb004cb8e41f23aad88b98cd5c6913f13583171f2c3f [2024-11-28 03:13:36,268 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-28 03:13:36,282 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-28 03:13:36,286 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-28 03:13:36,289 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-28 03:13:36,290 INFO L274 PluginConnector]: CDTParser initialized [2024-11-28 03:13:36,291 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afaf1da2-9026-4419-a97d-8030abe8619e/bin/uautomizer-verify-aQ6SnzHsRB/../../sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test6-1.i [2024-11-28 03:13:39,381 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afaf1da2-9026-4419-a97d-8030abe8619e/bin/uautomizer-verify-aQ6SnzHsRB/data/56fa37cf3/b893d3c7e985456789f0bee921b5b7b9/FLAGf952e7b42 [2024-11-28 03:13:39,953 INFO L384 CDTParser]: Found 1 translation units. [2024-11-28 03:13:39,955 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afaf1da2-9026-4419-a97d-8030abe8619e/sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test6-1.i [2024-11-28 03:13:39,981 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afaf1da2-9026-4419-a97d-8030abe8619e/bin/uautomizer-verify-aQ6SnzHsRB/data/56fa37cf3/b893d3c7e985456789f0bee921b5b7b9/FLAGf952e7b42 [2024-11-28 03:13:39,998 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afaf1da2-9026-4419-a97d-8030abe8619e/bin/uautomizer-verify-aQ6SnzHsRB/data/56fa37cf3/b893d3c7e985456789f0bee921b5b7b9 [2024-11-28 03:13:40,002 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-28 03:13:40,005 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-28 03:13:40,007 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-28 03:13:40,007 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-28 03:13:40,016 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-28 03:13:40,018 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 03:13:40" (1/1) ... [2024-11-28 03:13:40,021 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6e8ac4e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:13:40, skipping insertion in model container [2024-11-28 03:13:40,022 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 03:13:40" (1/1) ... [2024-11-28 03:13:40,100 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-28 03:13:40,774 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-28 03:13:40,815 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-28 03:13:40,823 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-28 03:13:40,832 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-28 03:13:40,844 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-28 03:13:40,896 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-28 03:13:40,897 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-28 03:13:40,900 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-28 03:13:40,901 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-28 03:13:40,905 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-28 03:13:40,906 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-28 03:13:40,908 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-28 03:13:40,908 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-28 03:13:40,923 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-28 03:13:40,935 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 03:13:40,974 ERROR L321 MainTranslator]: Unsupported Syntax: Found a cast between two array/pointer types of different sizes while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) [2024-11-28 03:13:40,974 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@435693d2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:13:40, skipping insertion in model container [2024-11-28 03:13:40,974 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-28 03:13:40,975 INFO L186 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2024-11-28 03:13:40,977 INFO L158 Benchmark]: Toolchain (without parser) took 972.54ms. Allocated memory is still 117.4MB. Free memory was 91.5MB in the beginning and 69.9MB in the end (delta: 21.6MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. [2024-11-28 03:13:40,978 INFO L158 Benchmark]: CDTParser took 0.44ms. Allocated memory is still 167.8MB. Free memory is still 104.0MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-28 03:13:40,978 INFO L158 Benchmark]: CACSL2BoogieTranslator took 967.86ms. Allocated memory is still 117.4MB. Free memory was 91.2MB in the beginning and 69.9MB in the end (delta: 21.2MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. [2024-11-28 03:13:40,980 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.44ms. Allocated memory is still 167.8MB. Free memory is still 104.0MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 967.86ms. Allocated memory is still 117.4MB. Free memory was 91.2MB in the beginning and 69.9MB in the end (delta: 21.2MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 1001]: 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_afaf1da2-9026-4419-a97d-8030abe8619e/bin/uautomizer-verify-aQ6SnzHsRB/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afaf1da2-9026-4419-a97d-8030abe8619e/bin/uautomizer-verify-aQ6SnzHsRB/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afaf1da2-9026-4419-a97d-8030abe8619e/bin/uautomizer-verify-aQ6SnzHsRB/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afaf1da2-9026-4419-a97d-8030abe8619e/bin/uautomizer-verify-aQ6SnzHsRB/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test6-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afaf1da2-9026-4419-a97d-8030abe8619e/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afaf1da2-9026-4419-a97d-8030abe8619e/bin/uautomizer-verify-aQ6SnzHsRB --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 8374eced2cbda6aab489eb004cb8e41f23aad88b98cd5c6913f13583171f2c3f --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-11-28 03:13:44,015 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-28 03:13:44,203 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afaf1da2-9026-4419-a97d-8030abe8619e/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2024-11-28 03:13:44,215 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-28 03:13:44,216 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-28 03:13:44,262 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-28 03:13:44,262 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-28 03:13:44,263 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-28 03:13:44,263 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-28 03:13:44,264 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-28 03:13:44,265 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-28 03:13:44,265 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-28 03:13:44,266 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-28 03:13:44,266 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-28 03:13:44,267 INFO L153 SettingsManager]: * Use SBE=true [2024-11-28 03:13:44,267 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-28 03:13:44,267 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-28 03:13:44,268 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-28 03:13:44,268 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-28 03:13:44,268 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-28 03:13:44,268 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-11-28 03:13:44,268 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-11-28 03:13:44,269 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-11-28 03:13:44,269 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-28 03:13:44,269 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-28 03:13:44,269 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2024-11-28 03:13:44,269 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2024-11-28 03:13:44,269 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-28 03:13:44,269 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-28 03:13:44,270 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-28 03:13:44,270 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-28 03:13:44,270 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-28 03:13:44,270 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 03:13:44,270 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 03:13:44,270 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 03:13:44,270 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 03:13:44,270 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-28 03:13:44,270 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 03:13:44,270 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 03:13:44,270 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 03:13:44,271 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 03:13:44,271 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-28 03:13:44,271 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-28 03:13:44,271 INFO L153 SettingsManager]: * Trace refinement strategy=FOX [2024-11-28 03:13:44,271 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2024-11-28 03:13:44,271 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-28 03:13:44,271 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-28 03:13:44,271 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-28 03:13:44,271 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-28 03:13:44,271 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_afaf1da2-9026-4419-a97d-8030abe8619e/bin/uautomizer-verify-aQ6SnzHsRB Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8374eced2cbda6aab489eb004cb8e41f23aad88b98cd5c6913f13583171f2c3f [2024-11-28 03:13:44,652 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-28 03:13:44,663 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-28 03:13:44,666 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-28 03:13:44,668 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-28 03:13:44,668 INFO L274 PluginConnector]: CDTParser initialized [2024-11-28 03:13:44,670 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afaf1da2-9026-4419-a97d-8030abe8619e/bin/uautomizer-verify-aQ6SnzHsRB/../../sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test6-1.i [2024-11-28 03:13:47,783 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afaf1da2-9026-4419-a97d-8030abe8619e/bin/uautomizer-verify-aQ6SnzHsRB/data/d8c52a93b/40f19db08b7a4fb9ba55e8c3cf860f3e/FLAGc1b004b28 [2024-11-28 03:13:48,228 INFO L384 CDTParser]: Found 1 translation units. [2024-11-28 03:13:48,230 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afaf1da2-9026-4419-a97d-8030abe8619e/sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test6-1.i [2024-11-28 03:13:48,260 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afaf1da2-9026-4419-a97d-8030abe8619e/bin/uautomizer-verify-aQ6SnzHsRB/data/d8c52a93b/40f19db08b7a4fb9ba55e8c3cf860f3e/FLAGc1b004b28 [2024-11-28 03:13:48,284 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afaf1da2-9026-4419-a97d-8030abe8619e/bin/uautomizer-verify-aQ6SnzHsRB/data/d8c52a93b/40f19db08b7a4fb9ba55e8c3cf860f3e [2024-11-28 03:13:48,287 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-28 03:13:48,291 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-28 03:13:48,293 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-28 03:13:48,294 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-28 03:13:48,299 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-28 03:13:48,300 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 03:13:48" (1/1) ... [2024-11-28 03:13:48,304 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4843bea0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:13:48, skipping insertion in model container [2024-11-28 03:13:48,304 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 03:13:48" (1/1) ... [2024-11-28 03:13:48,385 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-28 03:13:49,125 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-28 03:13:49,193 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-28 03:13:49,198 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-28 03:13:49,203 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-28 03:13:49,212 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-28 03:13:49,269 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-28 03:13:49,269 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-28 03:13:49,273 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-28 03:13:49,273 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-28 03:13:49,280 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-28 03:13:49,281 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-28 03:13:49,283 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-28 03:13:49,284 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-28 03:13:49,298 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-28 03:13:49,306 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 03:13:49,333 INFO L197 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2024-11-28 03:13:49,350 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-28 03:13:49,391 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-28 03:13:49,418 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-28 03:13:49,420 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-28 03:13:49,426 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-28 03:13:49,439 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-28 03:13:49,490 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-28 03:13:49,490 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-28 03:13:49,493 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-28 03:13:49,493 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-28 03:13:49,496 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-28 03:13:49,497 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-28 03:13:49,498 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-28 03:13:49,499 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-28 03:13:49,503 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-28 03:13:49,507 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 03:13:49,513 INFO L200 MainTranslator]: Completed pre-run [2024-11-28 03:13:49,688 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 03:13:49,767 INFO L204 MainTranslator]: Completed translation [2024-11-28 03:13:49,768 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:13:49 WrapperNode [2024-11-28 03:13:49,769 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-28 03:13:49,770 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-28 03:13:49,770 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-28 03:13:49,770 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-28 03:13:49,778 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:13:49" (1/1) ... [2024-11-28 03:13:49,833 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:13:49" (1/1) ... [2024-11-28 03:13:49,962 INFO L138 Inliner]: procedures = 286, calls = 300, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 1043 [2024-11-28 03:13:49,966 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-28 03:13:49,967 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-28 03:13:49,967 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-28 03:13:49,967 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-28 03:13:49,979 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:13:49" (1/1) ... [2024-11-28 03:13:49,979 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:13:49" (1/1) ... [2024-11-28 03:13:49,997 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:13:49" (1/1) ... [2024-11-28 03:13:50,129 INFO L175 MemorySlicer]: Split 268 memory accesses to 4 slices as follows [2, 12, 220, 34]. 82 percent of accesses are in the largest equivalence class. The 12 initializations are split as follows [2, 10, 0, 0]. The 54 writes are split as follows [0, 1, 49, 4]. [2024-11-28 03:13:50,129 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:13:49" (1/1) ... [2024-11-28 03:13:50,129 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:13:49" (1/1) ... [2024-11-28 03:13:50,200 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:13:49" (1/1) ... [2024-11-28 03:13:50,202 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:13:49" (1/1) ... [2024-11-28 03:13:50,212 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:13:49" (1/1) ... [2024-11-28 03:13:50,217 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:13:49" (1/1) ... [2024-11-28 03:13:50,221 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:13:49" (1/1) ... [2024-11-28 03:13:50,230 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-28 03:13:50,231 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-28 03:13:50,232 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-28 03:13:50,232 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-28 03:13:50,233 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:13:49" (1/1) ... [2024-11-28 03:13:50,240 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 03:13:50,260 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afaf1da2-9026-4419-a97d-8030abe8619e/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:13:50,273 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afaf1da2-9026-4419-a97d-8030abe8619e/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-28 03:13:50,277 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afaf1da2-9026-4419-a97d-8030abe8619e/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-28 03:13:50,311 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2024-11-28 03:13:50,312 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2024-11-28 03:13:50,313 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#0 [2024-11-28 03:13:50,314 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#1 [2024-11-28 03:13:50,314 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#2 [2024-11-28 03:13:50,314 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#3 [2024-11-28 03:13:50,314 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#0 [2024-11-28 03:13:50,314 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#1 [2024-11-28 03:13:50,314 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#2 [2024-11-28 03:13:50,314 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#3 [2024-11-28 03:13:50,315 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-28 03:13:50,315 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2024-11-28 03:13:50,315 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2024-11-28 03:13:50,315 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2024-11-28 03:13:50,315 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#3 [2024-11-28 03:13:50,315 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-28 03:13:50,315 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#0 [2024-11-28 03:13:50,315 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#1 [2024-11-28 03:13:50,315 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#2 [2024-11-28 03:13:50,315 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#3 [2024-11-28 03:13:50,315 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2024-11-28 03:13:50,316 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#1 [2024-11-28 03:13:50,319 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#2 [2024-11-28 03:13:50,319 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#3 [2024-11-28 03:13:50,319 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4#0 [2024-11-28 03:13:50,319 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4#1 [2024-11-28 03:13:50,319 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4#2 [2024-11-28 03:13:50,319 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4#3 [2024-11-28 03:13:50,320 INFO L130 BoogieDeclarations]: Found specification of procedure alt_bzero [2024-11-28 03:13:50,320 INFO L138 BoogieDeclarations]: Found implementation of procedure alt_bzero [2024-11-28 03:13:50,320 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-11-28 03:13:50,320 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-11-28 03:13:50,320 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-28 03:13:50,320 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-28 03:13:50,320 INFO L130 BoogieDeclarations]: Found specification of procedure alt_malloc [2024-11-28 03:13:50,320 INFO L138 BoogieDeclarations]: Found implementation of procedure alt_malloc [2024-11-28 03:13:50,320 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2024-11-28 03:13:50,320 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2024-11-28 03:13:50,320 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2024-11-28 03:13:50,321 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#3 [2024-11-28 03:13:50,321 INFO L130 BoogieDeclarations]: Found specification of procedure alt_free [2024-11-28 03:13:50,321 INFO L138 BoogieDeclarations]: Found implementation of procedure alt_free [2024-11-28 03:13:50,321 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-28 03:13:50,321 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-28 03:13:50,631 INFO L234 CfgBuilder]: Building ICFG [2024-11-28 03:13:50,633 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-28 03:13:56,510 INFO L? ?]: Removed 1086 outVars from TransFormulas that were not future-live. [2024-11-28 03:13:56,510 INFO L283 CfgBuilder]: Performing block encoding [2024-11-28 03:13:56,558 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-28 03:13:56,563 INFO L312 CfgBuilder]: Removed 36 assume(true) statements. [2024-11-28 03:13:56,563 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:13:56 BoogieIcfgContainer [2024-11-28 03:13:56,564 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-28 03:13:56,566 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-28 03:13:56,568 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-28 03:13:56,576 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-28 03:13:56,576 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 03:13:48" (1/3) ... [2024-11-28 03:13:56,577 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@be3b6d3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 03:13:56, skipping insertion in model container [2024-11-28 03:13:56,577 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:13:49" (2/3) ... [2024-11-28 03:13:56,577 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@be3b6d3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 03:13:56, skipping insertion in model container [2024-11-28 03:13:56,577 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:13:56" (3/3) ... [2024-11-28 03:13:56,579 INFO L128 eAbstractionObserver]: Analyzing ICFG uthash_FNV_test6-1.i [2024-11-28 03:13:56,595 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-28 03:13:56,597 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG uthash_FNV_test6-1.i that has 6 procedures, 1086 locations, 1 initial locations, 36 loop locations, and 522 error locations. [2024-11-28 03:13:56,659 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-28 03:13:56,674 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;@1766b0b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-28 03:13:56,674 INFO L334 AbstractCegarLoop]: Starting to check reachability of 522 error locations. [2024-11-28 03:13:56,682 INFO L276 IsEmpty]: Start isEmpty. Operand has 1086 states, 541 states have (on average 2.195933456561922) internal successors, (1188), 1066 states have internal predecessors, (1188), 18 states have call successors, (18), 5 states have call predecessors, (18), 5 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) [2024-11-28 03:13:56,687 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2024-11-28 03:13:56,687 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:13:56,688 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1] [2024-11-28 03:13:56,689 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, alt_mallocErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alt_mallocErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 519 more)] === [2024-11-28 03:13:56,694 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:13:56,695 INFO L85 PathProgramCache]: Analyzing trace with hash 85465, now seen corresponding path program 1 times [2024-11-28 03:13:56,706 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 03:13:56,707 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [787770745] [2024-11-28 03:13:56,707 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:13:56,707 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:13:56,707 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afaf1da2-9026-4419-a97d-8030abe8619e/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:13:56,709 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afaf1da2-9026-4419-a97d-8030abe8619e/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:13:56,712 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afaf1da2-9026-4419-a97d-8030abe8619e/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-28 03:13:56,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:13:56,939 INFO L256 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-28 03:13:56,982 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:13:57,059 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2024-11-28 03:13:57,087 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:13:57,087 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 03:13:57,088 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 03:13:57,088 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [787770745] [2024-11-28 03:13:57,088 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [787770745] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:13:57,089 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:13:57,089 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-28 03:13:57,091 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1028834721] [2024-11-28 03:13:57,091 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:13:57,098 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 03:13:57,099 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 03:13:57,133 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 03:13:57,133 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 03:13:57,139 INFO L87 Difference]: Start difference. First operand has 1086 states, 541 states have (on average 2.195933456561922) internal successors, (1188), 1066 states have internal predecessors, (1188), 18 states have call successors, (18), 5 states have call predecessors, (18), 5 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:13:59,794 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:13:59,795 INFO L93 Difference]: Finished difference Result 1166 states and 1236 transitions. [2024-11-28 03:13:59,797 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 03:13:59,798 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3 [2024-11-28 03:13:59,799 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:13:59,815 INFO L225 Difference]: With dead ends: 1166 [2024-11-28 03:13:59,815 INFO L226 Difference]: Without dead ends: 1164 [2024-11-28 03:13:59,817 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 03:13:59,821 INFO L435 NwaCegarLoop]: 797 mSDtfsCounter, 721 mSDsluCounter, 246 mSDsCounter, 0 mSdLazyCounter, 592 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 724 SdHoareTripleChecker+Valid, 1043 SdHoareTripleChecker+Invalid, 604 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 592 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2024-11-28 03:13:59,822 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [724 Valid, 1043 Invalid, 604 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 592 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2024-11-28 03:13:59,841 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1164 states. [2024-11-28 03:13:59,902 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1164 to 1107. [2024-11-28 03:13:59,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1107 states, 577 states have (on average 2.0554592720970537) internal successors, (1186), 1089 states have internal predecessors, (1186), 17 states have call successors, (17), 5 states have call predecessors, (17), 4 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2024-11-28 03:13:59,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1107 states to 1107 states and 1216 transitions. [2024-11-28 03:13:59,915 INFO L78 Accepts]: Start accepts. Automaton has 1107 states and 1216 transitions. Word has length 3 [2024-11-28 03:13:59,915 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:13:59,915 INFO L471 AbstractCegarLoop]: Abstraction has 1107 states and 1216 transitions. [2024-11-28 03:13:59,915 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:13:59,915 INFO L276 IsEmpty]: Start isEmpty. Operand 1107 states and 1216 transitions. [2024-11-28 03:13:59,916 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2024-11-28 03:13:59,916 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:13:59,916 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1] [2024-11-28 03:13:59,930 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afaf1da2-9026-4419-a97d-8030abe8619e/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-28 03:14:00,116 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afaf1da2-9026-4419-a97d-8030abe8619e/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:14:00,117 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, alt_mallocErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alt_mallocErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 519 more)] === [2024-11-28 03:14:00,117 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:14:00,117 INFO L85 PathProgramCache]: Analyzing trace with hash 85466, now seen corresponding path program 1 times [2024-11-28 03:14:00,118 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 03:14:00,118 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [585718981] [2024-11-28 03:14:00,118 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:14:00,118 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:14:00,118 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afaf1da2-9026-4419-a97d-8030abe8619e/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:14:00,124 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afaf1da2-9026-4419-a97d-8030abe8619e/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:14:00,126 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afaf1da2-9026-4419-a97d-8030abe8619e/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-28 03:14:00,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:14:00,348 INFO L256 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-28 03:14:00,351 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:14:00,361 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2024-11-28 03:14:00,382 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:14:00,382 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 03:14:00,382 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 03:14:00,384 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [585718981] [2024-11-28 03:14:00,387 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [585718981] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:14:00,387 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:14:00,387 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-28 03:14:00,387 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [790277620] [2024-11-28 03:14:00,387 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:14:00,389 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 03:14:00,389 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 03:14:00,389 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 03:14:00,389 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 03:14:00,390 INFO L87 Difference]: Start difference. First operand 1107 states and 1216 transitions. Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:14:03,659 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:14:03,659 INFO L93 Difference]: Finished difference Result 1512 states and 1658 transitions. [2024-11-28 03:14:03,661 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 03:14:03,662 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3 [2024-11-28 03:14:03,662 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:14:03,668 INFO L225 Difference]: With dead ends: 1512 [2024-11-28 03:14:03,669 INFO L226 Difference]: Without dead ends: 1512 [2024-11-28 03:14:03,669 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 03:14:03,670 INFO L435 NwaCegarLoop]: 937 mSDtfsCounter, 429 mSDsluCounter, 603 mSDsCounter, 0 mSdLazyCounter, 714 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 434 SdHoareTripleChecker+Valid, 1540 SdHoareTripleChecker+Invalid, 719 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 714 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2024-11-28 03:14:03,670 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [434 Valid, 1540 Invalid, 719 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 714 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time] [2024-11-28 03:14:03,674 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1512 states. [2024-11-28 03:14:03,724 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1512 to 1320. [2024-11-28 03:14:03,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1320 states, 789 states have (on average 2.041825095057034) internal successors, (1611), 1300 states have internal predecessors, (1611), 19 states have call successors, (19), 5 states have call predecessors, (19), 4 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2024-11-28 03:14:03,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1320 states to 1320 states and 1645 transitions. [2024-11-28 03:14:03,733 INFO L78 Accepts]: Start accepts. Automaton has 1320 states and 1645 transitions. Word has length 3 [2024-11-28 03:14:03,734 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:14:03,734 INFO L471 AbstractCegarLoop]: Abstraction has 1320 states and 1645 transitions. [2024-11-28 03:14:03,734 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:14:03,734 INFO L276 IsEmpty]: Start isEmpty. Operand 1320 states and 1645 transitions. [2024-11-28 03:14:03,734 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2024-11-28 03:14:03,734 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:14:03,735 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:14:03,748 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afaf1da2-9026-4419-a97d-8030abe8619e/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-28 03:14:03,935 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afaf1da2-9026-4419-a97d-8030abe8619e/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:14:03,936 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, alt_mallocErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alt_mallocErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 519 more)] === [2024-11-28 03:14:03,937 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:14:03,937 INFO L85 PathProgramCache]: Analyzing trace with hash -1875000221, now seen corresponding path program 1 times [2024-11-28 03:14:03,937 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 03:14:03,938 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [766970105] [2024-11-28 03:14:03,938 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:14:03,938 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:14:03,939 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afaf1da2-9026-4419-a97d-8030abe8619e/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:14:03,942 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afaf1da2-9026-4419-a97d-8030abe8619e/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:14:03,945 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afaf1da2-9026-4419-a97d-8030abe8619e/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-28 03:14:04,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:14:04,167 INFO L256 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-28 03:14:04,170 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:14:04,184 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2024-11-28 03:14:04,310 INFO L349 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2024-11-28 03:14:04,311 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 [2024-11-28 03:14:04,476 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:14:04,476 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 03:14:04,476 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 03:14:04,476 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [766970105] [2024-11-28 03:14:04,476 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [766970105] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:14:04,476 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:14:04,477 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 03:14:04,477 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [349291255] [2024-11-28 03:14:04,477 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:14:04,477 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 03:14:04,477 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 03:14:04,478 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 03:14:04,478 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 03:14:04,478 INFO L87 Difference]: Start difference. First operand 1320 states and 1645 transitions. Second operand has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:14:11,307 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:14:11,307 INFO L93 Difference]: Finished difference Result 2204 states and 2405 transitions. [2024-11-28 03:14:11,309 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 03:14:11,310 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2024-11-28 03:14:11,310 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:14:11,320 INFO L225 Difference]: With dead ends: 2204 [2024-11-28 03:14:11,320 INFO L226 Difference]: Without dead ends: 2204 [2024-11-28 03:14:11,320 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 03:14:11,321 INFO L435 NwaCegarLoop]: 1055 mSDtfsCounter, 1152 mSDsluCounter, 1188 mSDsCounter, 0 mSdLazyCounter, 1601 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1162 SdHoareTripleChecker+Valid, 2243 SdHoareTripleChecker+Invalid, 1611 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 1601 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.7s IncrementalHoareTripleChecker+Time [2024-11-28 03:14:11,322 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1162 Valid, 2243 Invalid, 1611 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 1601 Invalid, 0 Unknown, 0 Unchecked, 6.7s Time] [2024-11-28 03:14:11,326 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2204 states. [2024-11-28 03:14:11,364 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2204 to 1470. [2024-11-28 03:14:11,366 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1470 states, 939 states have (on average 2.022364217252396) internal successors, (1899), 1450 states have internal predecessors, (1899), 19 states have call successors, (19), 5 states have call predecessors, (19), 4 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2024-11-28 03:14:11,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1470 states to 1470 states and 1933 transitions. [2024-11-28 03:14:11,375 INFO L78 Accepts]: Start accepts. Automaton has 1470 states and 1933 transitions. Word has length 9 [2024-11-28 03:14:11,375 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:14:11,375 INFO L471 AbstractCegarLoop]: Abstraction has 1470 states and 1933 transitions. [2024-11-28 03:14:11,375 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:14:11,376 INFO L276 IsEmpty]: Start isEmpty. Operand 1470 states and 1933 transitions. [2024-11-28 03:14:11,376 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2024-11-28 03:14:11,376 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:14:11,376 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:14:11,390 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afaf1da2-9026-4419-a97d-8030abe8619e/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-28 03:14:11,576 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afaf1da2-9026-4419-a97d-8030abe8619e/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:14:11,577 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, alt_mallocErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alt_mallocErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 519 more)] === [2024-11-28 03:14:11,577 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:14:11,578 INFO L85 PathProgramCache]: Analyzing trace with hash 2004535318, now seen corresponding path program 1 times [2024-11-28 03:14:11,578 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 03:14:11,578 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1700501039] [2024-11-28 03:14:11,578 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:14:11,578 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:14:11,578 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afaf1da2-9026-4419-a97d-8030abe8619e/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:14:11,583 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afaf1da2-9026-4419-a97d-8030abe8619e/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:14:11,585 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afaf1da2-9026-4419-a97d-8030abe8619e/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-28 03:14:11,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:14:11,780 INFO L256 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-28 03:14:11,782 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:14:11,797 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2024-11-28 03:14:11,838 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:14:11,839 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 03:14:11,839 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 03:14:11,839 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1700501039] [2024-11-28 03:14:11,839 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1700501039] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:14:11,839 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:14:11,839 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 03:14:11,839 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [419194676] [2024-11-28 03:14:11,839 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:14:11,840 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 03:14:11,840 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 03:14:11,840 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 03:14:11,840 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 03:14:11,840 INFO L87 Difference]: Start difference. First operand 1470 states and 1933 transitions. Second operand has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:14:16,302 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:14:16,302 INFO L93 Difference]: Finished difference Result 2018 states and 2709 transitions. [2024-11-28 03:14:16,304 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 03:14:16,305 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2024-11-28 03:14:16,305 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:14:16,313 INFO L225 Difference]: With dead ends: 2018 [2024-11-28 03:14:16,314 INFO L226 Difference]: Without dead ends: 2018 [2024-11-28 03:14:16,314 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-28 03:14:16,315 INFO L435 NwaCegarLoop]: 1017 mSDtfsCounter, 925 mSDsluCounter, 1081 mSDsCounter, 0 mSdLazyCounter, 1476 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 928 SdHoareTripleChecker+Valid, 2098 SdHoareTripleChecker+Invalid, 1525 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 1476 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.4s IncrementalHoareTripleChecker+Time [2024-11-28 03:14:16,315 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [928 Valid, 2098 Invalid, 1525 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 1476 Invalid, 0 Unknown, 0 Unchecked, 4.4s Time] [2024-11-28 03:14:16,319 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2018 states. [2024-11-28 03:14:16,373 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2018 to 1425. [2024-11-28 03:14:16,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1425 states, 939 states have (on average 1.959531416400426) internal successors, (1840), 1405 states have internal predecessors, (1840), 19 states have call successors, (19), 5 states have call predecessors, (19), 4 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2024-11-28 03:14:16,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1425 states to 1425 states and 1874 transitions. [2024-11-28 03:14:16,382 INFO L78 Accepts]: Start accepts. Automaton has 1425 states and 1874 transitions. Word has length 10 [2024-11-28 03:14:16,383 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:14:16,383 INFO L471 AbstractCegarLoop]: Abstraction has 1425 states and 1874 transitions. [2024-11-28 03:14:16,383 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:14:16,383 INFO L276 IsEmpty]: Start isEmpty. Operand 1425 states and 1874 transitions. [2024-11-28 03:14:16,383 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2024-11-28 03:14:16,384 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:14:16,384 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:14:16,395 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afaf1da2-9026-4419-a97d-8030abe8619e/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-28 03:14:16,588 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afaf1da2-9026-4419-a97d-8030abe8619e/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:14:16,588 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, alt_mallocErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alt_mallocErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 519 more)] === [2024-11-28 03:14:16,589 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:14:16,589 INFO L85 PathProgramCache]: Analyzing trace with hash 2004535319, now seen corresponding path program 1 times [2024-11-28 03:14:16,590 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 03:14:16,590 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1554989992] [2024-11-28 03:14:16,590 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:14:16,590 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:14:16,590 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afaf1da2-9026-4419-a97d-8030abe8619e/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:14:16,592 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afaf1da2-9026-4419-a97d-8030abe8619e/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:14:16,595 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afaf1da2-9026-4419-a97d-8030abe8619e/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-28 03:14:16,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:14:16,766 INFO L256 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-28 03:14:16,768 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:14:16,782 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2024-11-28 03:14:16,841 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:14:16,841 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 03:14:16,841 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 03:14:16,841 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1554989992] [2024-11-28 03:14:16,841 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1554989992] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:14:16,842 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:14:16,842 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 03:14:16,842 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1762878560] [2024-11-28 03:14:16,842 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:14:16,842 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 03:14:16,842 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 03:14:16,843 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 03:14:16,843 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 03:14:16,843 INFO L87 Difference]: Start difference. First operand 1425 states and 1874 transitions. Second operand has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:14:21,775 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:14:21,775 INFO L93 Difference]: Finished difference Result 2083 states and 2732 transitions. [2024-11-28 03:14:21,776 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 03:14:21,776 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2024-11-28 03:14:21,776 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:14:21,785 INFO L225 Difference]: With dead ends: 2083 [2024-11-28 03:14:21,785 INFO L226 Difference]: Without dead ends: 2083 [2024-11-28 03:14:21,785 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-28 03:14:21,787 INFO L435 NwaCegarLoop]: 1193 mSDtfsCounter, 705 mSDsluCounter, 1260 mSDsCounter, 0 mSdLazyCounter, 1463 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 707 SdHoareTripleChecker+Valid, 2453 SdHoareTripleChecker+Invalid, 1477 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 1463 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.8s IncrementalHoareTripleChecker+Time [2024-11-28 03:14:21,787 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [707 Valid, 2453 Invalid, 1477 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 1463 Invalid, 0 Unknown, 0 Unchecked, 4.8s Time] [2024-11-28 03:14:21,792 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2083 states. [2024-11-28 03:14:21,822 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2083 to 1417. [2024-11-28 03:14:21,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1417 states, 941 states have (on average 1.9319872476089266) internal successors, (1818), 1397 states have internal predecessors, (1818), 19 states have call successors, (19), 5 states have call predecessors, (19), 4 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2024-11-28 03:14:21,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1417 states to 1417 states and 1852 transitions. [2024-11-28 03:14:21,829 INFO L78 Accepts]: Start accepts. Automaton has 1417 states and 1852 transitions. Word has length 10 [2024-11-28 03:14:21,830 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:14:21,830 INFO L471 AbstractCegarLoop]: Abstraction has 1417 states and 1852 transitions. [2024-11-28 03:14:21,830 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:14:21,830 INFO L276 IsEmpty]: Start isEmpty. Operand 1417 states and 1852 transitions. [2024-11-28 03:14:21,830 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2024-11-28 03:14:21,831 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:14:21,831 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:14:21,842 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afaf1da2-9026-4419-a97d-8030abe8619e/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-11-28 03:14:22,031 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afaf1da2-9026-4419-a97d-8030abe8619e/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:14:22,032 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, alt_mallocErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alt_mallocErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 519 more)] === [2024-11-28 03:14:22,032 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:14:22,032 INFO L85 PathProgramCache]: Analyzing trace with hash -573654689, now seen corresponding path program 1 times [2024-11-28 03:14:22,033 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 03:14:22,033 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1160820309] [2024-11-28 03:14:22,033 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:14:22,033 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:14:22,033 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afaf1da2-9026-4419-a97d-8030abe8619e/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:14:22,036 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afaf1da2-9026-4419-a97d-8030abe8619e/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:14:22,039 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afaf1da2-9026-4419-a97d-8030abe8619e/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-28 03:14:22,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:14:22,238 INFO L256 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-28 03:14:22,240 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:14:22,364 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:14:22,364 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 03:14:22,364 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 03:14:22,365 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1160820309] [2024-11-28 03:14:22,365 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1160820309] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:14:22,365 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:14:22,365 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-28 03:14:22,365 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1062516566] [2024-11-28 03:14:22,365 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:14:22,366 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 03:14:22,366 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 03:14:22,366 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 03:14:22,367 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 03:14:22,367 INFO L87 Difference]: Start difference. First operand 1417 states and 1852 transitions. Second operand has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:14:23,246 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:14:23,246 INFO L93 Difference]: Finished difference Result 1865 states and 2410 transitions. [2024-11-28 03:14:23,247 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 03:14:23,248 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2024-11-28 03:14:23,248 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:14:23,254 INFO L225 Difference]: With dead ends: 1865 [2024-11-28 03:14:23,254 INFO L226 Difference]: Without dead ends: 1865 [2024-11-28 03:14:23,255 INFO L434 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 [2024-11-28 03:14:23,255 INFO L435 NwaCegarLoop]: 1156 mSDtfsCounter, 456 mSDsluCounter, 2042 mSDsCounter, 0 mSdLazyCounter, 265 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 457 SdHoareTripleChecker+Valid, 3198 SdHoareTripleChecker+Invalid, 269 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 265 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-28 03:14:23,256 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [457 Valid, 3198 Invalid, 269 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 265 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-28 03:14:23,259 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1865 states. [2024-11-28 03:14:23,286 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1865 to 1673. [2024-11-28 03:14:23,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1673 states, 1197 states have (on average 1.9473684210526316) internal successors, (2331), 1653 states have internal predecessors, (2331), 19 states have call successors, (19), 5 states have call predecessors, (19), 4 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2024-11-28 03:14:23,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1673 states to 1673 states and 2365 transitions. [2024-11-28 03:14:23,295 INFO L78 Accepts]: Start accepts. Automaton has 1673 states and 2365 transitions. Word has length 13 [2024-11-28 03:14:23,296 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:14:23,296 INFO L471 AbstractCegarLoop]: Abstraction has 1673 states and 2365 transitions. [2024-11-28 03:14:23,298 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:14:23,299 INFO L276 IsEmpty]: Start isEmpty. Operand 1673 states and 2365 transitions. [2024-11-28 03:14:23,299 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2024-11-28 03:14:23,299 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:14:23,299 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:14:23,313 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afaf1da2-9026-4419-a97d-8030abe8619e/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-28 03:14:23,500 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afaf1da2-9026-4419-a97d-8030abe8619e/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:14:23,500 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr322REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, alt_mallocErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alt_mallocErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 519 more)] === [2024-11-28 03:14:23,501 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:14:23,501 INFO L85 PathProgramCache]: Analyzing trace with hash -1300891885, now seen corresponding path program 1 times [2024-11-28 03:14:23,501 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 03:14:23,502 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1887306288] [2024-11-28 03:14:23,502 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:14:23,502 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:14:23,502 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afaf1da2-9026-4419-a97d-8030abe8619e/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:14:23,504 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afaf1da2-9026-4419-a97d-8030abe8619e/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:14:23,508 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afaf1da2-9026-4419-a97d-8030abe8619e/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-28 03:14:23,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:14:23,693 INFO L256 TraceCheckSpWp]: Trace formula consists of 135 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-28 03:14:23,695 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:14:23,758 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:14:23,758 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 03:14:23,758 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 03:14:23,759 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1887306288] [2024-11-28 03:14:23,759 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1887306288] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:14:23,759 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:14:23,759 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 03:14:23,759 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2139502143] [2024-11-28 03:14:23,759 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:14:23,760 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 03:14:23,760 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 03:14:23,760 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 03:14:23,760 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 03:14:23,761 INFO L87 Difference]: Start difference. First operand 1673 states and 2365 transitions. Second operand has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:14:26,632 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:14:26,632 INFO L93 Difference]: Finished difference Result 1719 states and 2312 transitions. [2024-11-28 03:14:26,634 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 03:14:26,634 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2024-11-28 03:14:26,634 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:14:26,640 INFO L225 Difference]: With dead ends: 1719 [2024-11-28 03:14:26,640 INFO L226 Difference]: Without dead ends: 1719 [2024-11-28 03:14:26,640 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-28 03:14:26,640 INFO L435 NwaCegarLoop]: 818 mSDtfsCounter, 739 mSDsluCounter, 803 mSDsCounter, 0 mSdLazyCounter, 1050 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 742 SdHoareTripleChecker+Valid, 1621 SdHoareTripleChecker+Invalid, 1077 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 1050 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2024-11-28 03:14:26,641 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [742 Valid, 1621 Invalid, 1077 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 1050 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2024-11-28 03:14:26,643 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1719 states. [2024-11-28 03:14:26,667 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1719 to 1650. [2024-11-28 03:14:26,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1650 states, 1197 states have (on average 1.8705096073517127) internal successors, (2239), 1630 states have internal predecessors, (2239), 19 states have call successors, (19), 5 states have call predecessors, (19), 4 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2024-11-28 03:14:26,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1650 states to 1650 states and 2273 transitions. [2024-11-28 03:14:26,675 INFO L78 Accepts]: Start accepts. Automaton has 1650 states and 2273 transitions. Word has length 13 [2024-11-28 03:14:26,675 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:14:26,675 INFO L471 AbstractCegarLoop]: Abstraction has 1650 states and 2273 transitions. [2024-11-28 03:14:26,675 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:14:26,675 INFO L276 IsEmpty]: Start isEmpty. Operand 1650 states and 2273 transitions. [2024-11-28 03:14:26,676 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2024-11-28 03:14:26,676 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:14:26,676 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:14:26,687 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afaf1da2-9026-4419-a97d-8030abe8619e/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2024-11-28 03:14:26,876 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afaf1da2-9026-4419-a97d-8030abe8619e/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:14:26,876 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr323REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, alt_mallocErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alt_mallocErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 519 more)] === [2024-11-28 03:14:26,877 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:14:26,877 INFO L85 PathProgramCache]: Analyzing trace with hash -1300891884, now seen corresponding path program 1 times [2024-11-28 03:14:26,877 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 03:14:26,877 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1637557947] [2024-11-28 03:14:26,877 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:14:26,877 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:14:26,877 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afaf1da2-9026-4419-a97d-8030abe8619e/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:14:26,879 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afaf1da2-9026-4419-a97d-8030abe8619e/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:14:26,880 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afaf1da2-9026-4419-a97d-8030abe8619e/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-28 03:14:27,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:14:27,080 INFO L256 TraceCheckSpWp]: Trace formula consists of 135 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-28 03:14:27,082 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:14:27,092 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2024-11-28 03:14:27,241 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:14:27,242 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 03:14:27,242 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 03:14:27,242 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1637557947] [2024-11-28 03:14:27,242 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1637557947] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:14:27,242 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:14:27,242 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 03:14:27,242 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [697816059] [2024-11-28 03:14:27,243 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:14:27,244 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 03:14:27,244 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 03:14:27,244 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 03:14:27,245 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 03:14:27,245 INFO L87 Difference]: Start difference. First operand 1650 states and 2273 transitions. Second operand has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:14:31,542 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:14:31,542 INFO L93 Difference]: Finished difference Result 1775 states and 2211 transitions. [2024-11-28 03:14:31,543 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 03:14:31,543 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2024-11-28 03:14:31,544 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:14:31,547 INFO L225 Difference]: With dead ends: 1775 [2024-11-28 03:14:31,547 INFO L226 Difference]: Without dead ends: 1775 [2024-11-28 03:14:31,547 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-28 03:14:31,548 INFO L435 NwaCegarLoop]: 889 mSDtfsCounter, 408 mSDsluCounter, 1064 mSDsCounter, 0 mSdLazyCounter, 1195 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 413 SdHoareTripleChecker+Valid, 1953 SdHoareTripleChecker+Invalid, 1210 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 1195 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.2s IncrementalHoareTripleChecker+Time [2024-11-28 03:14:31,548 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [413 Valid, 1953 Invalid, 1210 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 1195 Invalid, 0 Unknown, 0 Unchecked, 4.2s Time] [2024-11-28 03:14:31,550 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1775 states. [2024-11-28 03:14:31,575 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1775 to 1599. [2024-11-28 03:14:31,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1599 states, 1146 states have (on average 1.869109947643979) internal successors, (2142), 1579 states have internal predecessors, (2142), 19 states have call successors, (19), 5 states have call predecessors, (19), 4 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2024-11-28 03:14:31,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1599 states to 1599 states and 2176 transitions. [2024-11-28 03:14:31,583 INFO L78 Accepts]: Start accepts. Automaton has 1599 states and 2176 transitions. Word has length 13 [2024-11-28 03:14:31,584 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:14:31,584 INFO L471 AbstractCegarLoop]: Abstraction has 1599 states and 2176 transitions. [2024-11-28 03:14:31,584 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:14:31,584 INFO L276 IsEmpty]: Start isEmpty. Operand 1599 states and 2176 transitions. [2024-11-28 03:14:31,585 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2024-11-28 03:14:31,585 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:14:31,585 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:14:31,598 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afaf1da2-9026-4419-a97d-8030abe8619e/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-11-28 03:14:31,785 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afaf1da2-9026-4419-a97d-8030abe8619e/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:14:31,786 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, alt_mallocErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alt_mallocErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 519 more)] === [2024-11-28 03:14:31,787 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:14:31,787 INFO L85 PathProgramCache]: Analyzing trace with hash -891307863, now seen corresponding path program 1 times [2024-11-28 03:14:31,788 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 03:14:31,788 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [812919759] [2024-11-28 03:14:31,788 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:14:31,788 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:14:31,788 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afaf1da2-9026-4419-a97d-8030abe8619e/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:14:31,792 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afaf1da2-9026-4419-a97d-8030abe8619e/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:14:31,794 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afaf1da2-9026-4419-a97d-8030abe8619e/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-28 03:14:31,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:14:31,997 INFO L256 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-28 03:14:32,000 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:14:32,008 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-28 03:14:32,009 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-28 03:14:32,010 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-28 03:14:32,018 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 39 [2024-11-28 03:14:32,094 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-28 03:14:32,095 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 70 treesize of output 26 [2024-11-28 03:14:32,113 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:14:32,113 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 03:14:32,114 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 03:14:32,114 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [812919759] [2024-11-28 03:14:32,114 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [812919759] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:14:32,114 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:14:32,114 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-28 03:14:32,114 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [422873838] [2024-11-28 03:14:32,114 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:14:32,115 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 03:14:32,115 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 03:14:32,115 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 03:14:32,115 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 03:14:32,115 INFO L87 Difference]: Start difference. First operand 1599 states and 2176 transitions. Second operand has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:14:32,991 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:14:32,992 INFO L93 Difference]: Finished difference Result 2158 states and 2567 transitions. [2024-11-28 03:14:32,993 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 03:14:32,993 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2024-11-28 03:14:32,993 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:14:33,000 INFO L225 Difference]: With dead ends: 2158 [2024-11-28 03:14:33,000 INFO L226 Difference]: Without dead ends: 2158 [2024-11-28 03:14:33,001 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-28 03:14:33,002 INFO L435 NwaCegarLoop]: 1009 mSDtfsCounter, 920 mSDsluCounter, 1994 mSDsCounter, 0 mSdLazyCounter, 150 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 932 SdHoareTripleChecker+Valid, 3003 SdHoareTripleChecker+Invalid, 151 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 150 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-28 03:14:33,002 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [932 Valid, 3003 Invalid, 151 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 150 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-28 03:14:33,005 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2158 states. [2024-11-28 03:14:33,026 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2158 to 1279. [2024-11-28 03:14:33,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1279 states, 828 states have (on average 1.8671497584541064) internal successors, (1546), 1261 states have internal predecessors, (1546), 17 states have call successors, (17), 5 states have call predecessors, (17), 4 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2024-11-28 03:14:33,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1279 states to 1279 states and 1576 transitions. [2024-11-28 03:14:33,033 INFO L78 Accepts]: Start accepts. Automaton has 1279 states and 1576 transitions. Word has length 16 [2024-11-28 03:14:33,033 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:14:33,033 INFO L471 AbstractCegarLoop]: Abstraction has 1279 states and 1576 transitions. [2024-11-28 03:14:33,033 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:14:33,033 INFO L276 IsEmpty]: Start isEmpty. Operand 1279 states and 1576 transitions. [2024-11-28 03:14:33,034 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2024-11-28 03:14:33,034 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:14:33,034 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:14:33,047 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afaf1da2-9026-4419-a97d-8030abe8619e/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-11-28 03:14:33,234 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afaf1da2-9026-4419-a97d-8030abe8619e/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:14:33,235 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr14REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, alt_mallocErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alt_mallocErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 519 more)] === [2024-11-28 03:14:33,235 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:14:33,236 INFO L85 PathProgramCache]: Analyzing trace with hash 418110181, now seen corresponding path program 1 times [2024-11-28 03:14:33,236 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 03:14:33,236 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1552573896] [2024-11-28 03:14:33,236 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:14:33,237 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:14:33,237 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afaf1da2-9026-4419-a97d-8030abe8619e/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:14:33,239 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afaf1da2-9026-4419-a97d-8030abe8619e/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:14:33,242 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afaf1da2-9026-4419-a97d-8030abe8619e/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-28 03:14:33,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:14:33,453 INFO L256 TraceCheckSpWp]: Trace formula consists of 181 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-28 03:14:33,455 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:14:33,509 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:14:33,509 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 03:14:33,509 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 03:14:33,509 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1552573896] [2024-11-28 03:14:33,509 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1552573896] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:14:33,509 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:14:33,510 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 03:14:33,510 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1153835645] [2024-11-28 03:14:33,510 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:14:33,510 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 03:14:33,510 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 03:14:33,511 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 03:14:33,511 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 03:14:33,511 INFO L87 Difference]: Start difference. First operand 1279 states and 1576 transitions. Second operand has 4 states, 3 states have (on average 6.666666666666667) internal successors, (20), 4 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:14:36,791 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:14:36,792 INFO L93 Difference]: Finished difference Result 1705 states and 2105 transitions. [2024-11-28 03:14:36,793 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 03:14:36,793 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 6.666666666666667) internal successors, (20), 4 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2024-11-28 03:14:36,793 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:14:36,798 INFO L225 Difference]: With dead ends: 1705 [2024-11-28 03:14:36,798 INFO L226 Difference]: Without dead ends: 1705 [2024-11-28 03:14:36,798 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-28 03:14:36,799 INFO L435 NwaCegarLoop]: 581 mSDtfsCounter, 948 mSDsluCounter, 771 mSDsCounter, 0 mSdLazyCounter, 1169 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 951 SdHoareTripleChecker+Valid, 1352 SdHoareTripleChecker+Invalid, 1197 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 1169 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2024-11-28 03:14:36,799 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [951 Valid, 1352 Invalid, 1197 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 1169 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time] [2024-11-28 03:14:36,801 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1705 states. [2024-11-28 03:14:36,817 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1705 to 1256. [2024-11-28 03:14:36,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1256 states, 828 states have (on average 1.8115942028985508) internal successors, (1500), 1238 states have internal predecessors, (1500), 17 states have call successors, (17), 5 states have call predecessors, (17), 4 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2024-11-28 03:14:36,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1256 states to 1256 states and 1530 transitions. [2024-11-28 03:14:36,823 INFO L78 Accepts]: Start accepts. Automaton has 1256 states and 1530 transitions. Word has length 20 [2024-11-28 03:14:36,823 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:14:36,823 INFO L471 AbstractCegarLoop]: Abstraction has 1256 states and 1530 transitions. [2024-11-28 03:14:36,823 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 6.666666666666667) internal successors, (20), 4 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:14:36,824 INFO L276 IsEmpty]: Start isEmpty. Operand 1256 states and 1530 transitions. [2024-11-28 03:14:36,824 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2024-11-28 03:14:36,824 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:14:36,824 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:14:36,838 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afaf1da2-9026-4419-a97d-8030abe8619e/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-11-28 03:14:37,028 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afaf1da2-9026-4419-a97d-8030abe8619e/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:14:37,028 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr15REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, alt_mallocErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alt_mallocErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 519 more)] === [2024-11-28 03:14:37,029 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:14:37,029 INFO L85 PathProgramCache]: Analyzing trace with hash 418110182, now seen corresponding path program 1 times [2024-11-28 03:14:37,030 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 03:14:37,030 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1212262281] [2024-11-28 03:14:37,030 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:14:37,030 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:14:37,030 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afaf1da2-9026-4419-a97d-8030abe8619e/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:14:37,033 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afaf1da2-9026-4419-a97d-8030abe8619e/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:14:37,036 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afaf1da2-9026-4419-a97d-8030abe8619e/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-28 03:14:37,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:14:37,288 INFO L256 TraceCheckSpWp]: Trace formula consists of 181 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-28 03:14:37,290 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:14:37,307 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2024-11-28 03:14:37,523 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:14:37,523 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 03:14:37,524 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 03:14:37,524 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1212262281] [2024-11-28 03:14:37,524 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1212262281] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:14:37,524 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:14:37,524 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-28 03:14:37,525 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [503496808] [2024-11-28 03:14:37,525 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:14:37,525 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-28 03:14:37,525 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 03:14:37,526 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-28 03:14:37,526 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-28 03:14:37,526 INFO L87 Difference]: Start difference. First operand 1256 states and 1530 transitions. Second operand has 5 states, 4 states have (on average 5.0) internal successors, (20), 5 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:14:43,982 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:14:43,982 INFO L93 Difference]: Finished difference Result 1975 states and 2407 transitions. [2024-11-28 03:14:43,983 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-28 03:14:43,983 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 5.0) internal successors, (20), 5 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2024-11-28 03:14:43,983 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:14:43,986 INFO L225 Difference]: With dead ends: 1975 [2024-11-28 03:14:43,987 INFO L226 Difference]: Without dead ends: 1975 [2024-11-28 03:14:43,987 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-11-28 03:14:43,987 INFO L435 NwaCegarLoop]: 1213 mSDtfsCounter, 803 mSDsluCounter, 2001 mSDsCounter, 0 mSdLazyCounter, 2257 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 805 SdHoareTripleChecker+Valid, 3214 SdHoareTripleChecker+Invalid, 2280 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 2257 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.3s IncrementalHoareTripleChecker+Time [2024-11-28 03:14:43,987 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [805 Valid, 3214 Invalid, 2280 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 2257 Invalid, 0 Unknown, 0 Unchecked, 6.3s Time] [2024-11-28 03:14:43,989 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1975 states. [2024-11-28 03:14:44,007 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1975 to 1372. [2024-11-28 03:14:44,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1372 states, 944 states have (on average 1.7372881355932204) internal successors, (1640), 1354 states have internal predecessors, (1640), 17 states have call successors, (17), 5 states have call predecessors, (17), 4 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2024-11-28 03:14:44,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1372 states to 1372 states and 1670 transitions. [2024-11-28 03:14:44,013 INFO L78 Accepts]: Start accepts. Automaton has 1372 states and 1670 transitions. Word has length 20 [2024-11-28 03:14:44,013 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:14:44,013 INFO L471 AbstractCegarLoop]: Abstraction has 1372 states and 1670 transitions. [2024-11-28 03:14:44,014 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 5.0) internal successors, (20), 5 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:14:44,014 INFO L276 IsEmpty]: Start isEmpty. Operand 1372 states and 1670 transitions. [2024-11-28 03:14:44,015 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2024-11-28 03:14:44,016 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:14:44,016 INFO L218 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:14:44,028 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afaf1da2-9026-4419-a97d-8030abe8619e/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2024-11-28 03:14:44,217 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afaf1da2-9026-4419-a97d-8030abe8619e/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:14:44,217 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr15REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, alt_mallocErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alt_mallocErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 519 more)] === [2024-11-28 03:14:44,217 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:14:44,217 INFO L85 PathProgramCache]: Analyzing trace with hash -2062687914, now seen corresponding path program 1 times [2024-11-28 03:14:44,218 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 03:14:44,218 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [315281738] [2024-11-28 03:14:44,218 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:14:44,218 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:14:44,218 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afaf1da2-9026-4419-a97d-8030abe8619e/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:14:44,220 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afaf1da2-9026-4419-a97d-8030abe8619e/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:14:44,221 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afaf1da2-9026-4419-a97d-8030abe8619e/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-11-28 03:14:44,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:14:44,472 INFO L256 TraceCheckSpWp]: Trace formula consists of 252 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-28 03:14:44,474 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:14:44,491 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2024-11-28 03:14:44,820 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:14:44,820 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:14:45,540 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:14:45,540 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 03:14:45,540 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [315281738] [2024-11-28 03:14:45,540 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [315281738] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 03:14:45,541 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-28 03:14:45,541 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2024-11-28 03:14:45,541 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [672535671] [2024-11-28 03:14:45,541 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-28 03:14:45,541 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-28 03:14:45,541 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 03:14:45,542 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-28 03:14:45,542 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-11-28 03:14:45,542 INFO L87 Difference]: Start difference. First operand 1372 states and 1670 transitions. Second operand has 10 states, 9 states have (on average 8.11111111111111) internal successors, (73), 10 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:15:00,861 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:15:00,861 INFO L93 Difference]: Finished difference Result 2337 states and 2903 transitions. [2024-11-28 03:15:00,862 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-28 03:15:00,863 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 8.11111111111111) internal successors, (73), 10 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2024-11-28 03:15:00,863 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:15:00,869 INFO L225 Difference]: With dead ends: 2337 [2024-11-28 03:15:00,869 INFO L226 Difference]: Without dead ends: 2337 [2024-11-28 03:15:00,869 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 68 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=59, Invalid=151, Unknown=0, NotChecked=0, Total=210 [2024-11-28 03:15:00,870 INFO L435 NwaCegarLoop]: 1267 mSDtfsCounter, 2454 mSDsluCounter, 3782 mSDsCounter, 0 mSdLazyCounter, 3867 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2456 SdHoareTripleChecker+Valid, 5049 SdHoareTripleChecker+Invalid, 3897 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 3867 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 15.0s IncrementalHoareTripleChecker+Time [2024-11-28 03:15:00,871 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2456 Valid, 5049 Invalid, 3897 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 3867 Invalid, 0 Unknown, 0 Unchecked, 15.0s Time] [2024-11-28 03:15:00,873 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2337 states. [2024-11-28 03:15:00,891 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2337 to 1538. [2024-11-28 03:15:00,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1538 states, 1110 states have (on average 1.6882882882882884) internal successors, (1874), 1520 states have internal predecessors, (1874), 17 states have call successors, (17), 5 states have call predecessors, (17), 4 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2024-11-28 03:15:00,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1538 states to 1538 states and 1904 transitions. [2024-11-28 03:15:00,912 INFO L78 Accepts]: Start accepts. Automaton has 1538 states and 1904 transitions. Word has length 39 [2024-11-28 03:15:00,913 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:15:00,913 INFO L471 AbstractCegarLoop]: Abstraction has 1538 states and 1904 transitions. [2024-11-28 03:15:00,913 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 8.11111111111111) internal successors, (73), 10 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:15:00,913 INFO L276 IsEmpty]: Start isEmpty. Operand 1538 states and 1904 transitions. [2024-11-28 03:15:00,918 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2024-11-28 03:15:00,919 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:15:00,919 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:15:00,934 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afaf1da2-9026-4419-a97d-8030abe8619e/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2024-11-28 03:15:01,119 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afaf1da2-9026-4419-a97d-8030abe8619e/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:15:01,119 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting alt_mallocErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, alt_mallocErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alt_mallocErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 519 more)] === [2024-11-28 03:15:01,120 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:15:01,120 INFO L85 PathProgramCache]: Analyzing trace with hash -705673513, now seen corresponding path program 1 times [2024-11-28 03:15:01,121 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 03:15:01,121 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [180295751] [2024-11-28 03:15:01,121 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:15:01,121 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:15:01,121 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afaf1da2-9026-4419-a97d-8030abe8619e/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:15:01,125 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afaf1da2-9026-4419-a97d-8030abe8619e/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:15:01,128 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afaf1da2-9026-4419-a97d-8030abe8619e/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-11-28 03:15:01,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:15:01,389 INFO L256 TraceCheckSpWp]: Trace formula consists of 313 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-28 03:15:01,391 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:15:01,455 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:15:01,455 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 03:15:01,455 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 03:15:01,455 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [180295751] [2024-11-28 03:15:01,455 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [180295751] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:15:01,455 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:15:01,456 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-28 03:15:01,456 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [6928529] [2024-11-28 03:15:01,456 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:15:01,456 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 03:15:01,456 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 03:15:01,457 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 03:15:01,457 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 03:15:01,457 INFO L87 Difference]: Start difference. First operand 1538 states and 1904 transitions. Second operand has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:15:01,609 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:15:01,609 INFO L93 Difference]: Finished difference Result 1223 states and 1464 transitions. [2024-11-28 03:15:01,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 03:15:01,610 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 56 [2024-11-28 03:15:01,610 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:15:01,614 INFO L225 Difference]: With dead ends: 1223 [2024-11-28 03:15:01,615 INFO L226 Difference]: Without dead ends: 1223 [2024-11-28 03:15:01,615 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 53 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-28 03:15:01,616 INFO L435 NwaCegarLoop]: 965 mSDtfsCounter, 56 mSDsluCounter, 1857 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56 SdHoareTripleChecker+Valid, 2822 SdHoareTripleChecker+Invalid, 77 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 03:15:01,616 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [56 Valid, 2822 Invalid, 77 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 03:15:01,618 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1223 states. [2024-11-28 03:15:01,630 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1223 to 1221. [2024-11-28 03:15:01,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1221 states, 816 states have (on average 1.7549019607843137) internal successors, (1432), 1203 states have internal predecessors, (1432), 17 states have call successors, (17), 5 states have call predecessors, (17), 4 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2024-11-28 03:15:01,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1221 states to 1221 states and 1462 transitions. [2024-11-28 03:15:01,636 INFO L78 Accepts]: Start accepts. Automaton has 1221 states and 1462 transitions. Word has length 56 [2024-11-28 03:15:01,637 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:15:01,637 INFO L471 AbstractCegarLoop]: Abstraction has 1221 states and 1462 transitions. [2024-11-28 03:15:01,637 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:15:01,637 INFO L276 IsEmpty]: Start isEmpty. Operand 1221 states and 1462 transitions. [2024-11-28 03:15:01,638 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2024-11-28 03:15:01,638 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:15:01,638 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:15:01,653 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afaf1da2-9026-4419-a97d-8030abe8619e/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2024-11-28 03:15:01,839 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afaf1da2-9026-4419-a97d-8030abe8619e/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:15:01,839 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting alt_mallocErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, alt_mallocErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alt_mallocErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 519 more)] === [2024-11-28 03:15:01,839 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:15:01,840 INFO L85 PathProgramCache]: Analyzing trace with hash 1129088035, now seen corresponding path program 1 times [2024-11-28 03:15:01,840 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 03:15:01,840 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [759133332] [2024-11-28 03:15:01,840 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:15:01,840 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:15:01,840 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afaf1da2-9026-4419-a97d-8030abe8619e/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:15:01,846 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afaf1da2-9026-4419-a97d-8030abe8619e/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:15:01,847 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afaf1da2-9026-4419-a97d-8030abe8619e/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-11-28 03:15:02,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:15:02,167 INFO L256 TraceCheckSpWp]: Trace formula consists of 337 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-28 03:15:02,170 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:15:02,226 INFO L349 Elim1Store]: treesize reduction 24, result has 33.3 percent of original size [2024-11-28 03:15:02,226 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 21 treesize of output 20 [2024-11-28 03:15:02,292 INFO L349 Elim1Store]: treesize reduction 15, result has 42.3 percent of original size [2024-11-28 03:15:02,293 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 16 treesize of output 17 [2024-11-28 03:15:02,837 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:15:02,837 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 03:15:02,837 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 03:15:02,837 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [759133332] [2024-11-28 03:15:02,837 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [759133332] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:15:02,838 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:15:02,838 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 03:15:02,838 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2098093484] [2024-11-28 03:15:02,838 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:15:02,838 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-28 03:15:02,838 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 03:15:02,839 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-28 03:15:02,839 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-28 03:15:02,839 INFO L87 Difference]: Start difference. First operand 1221 states and 1462 transitions. Second operand has 5 states, 4 states have (on average 15.75) internal successors, (63), 4 states have internal predecessors, (63), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:15:06,495 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:15:06,495 INFO L93 Difference]: Finished difference Result 2190 states and 2624 transitions. [2024-11-28 03:15:06,495 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 03:15:06,496 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 15.75) internal successors, (63), 4 states have internal predecessors, (63), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 64 [2024-11-28 03:15:06,496 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:15:06,502 INFO L225 Difference]: With dead ends: 2190 [2024-11-28 03:15:06,502 INFO L226 Difference]: Without dead ends: 2190 [2024-11-28 03:15:06,503 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 60 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-28 03:15:06,503 INFO L435 NwaCegarLoop]: 617 mSDtfsCounter, 2437 mSDsluCounter, 1089 mSDsCounter, 0 mSdLazyCounter, 1239 mSolverCounterSat, 56 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2437 SdHoareTripleChecker+Valid, 1706 SdHoareTripleChecker+Invalid, 1295 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 1239 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.6s IncrementalHoareTripleChecker+Time [2024-11-28 03:15:06,503 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2437 Valid, 1706 Invalid, 1295 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [56 Valid, 1239 Invalid, 0 Unknown, 0 Unchecked, 3.6s Time] [2024-11-28 03:15:06,506 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2190 states. [2024-11-28 03:15:06,531 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2190 to 1697. [2024-11-28 03:15:06,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1697 states, 1277 states have (on average 1.7517619420516837) internal successors, (2237), 1667 states have internal predecessors, (2237), 29 states have call successors, (29), 9 states have call predecessors, (29), 7 states have return successors, (25), 22 states have call predecessors, (25), 25 states have call successors, (25) [2024-11-28 03:15:06,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1697 states to 1697 states and 2291 transitions. [2024-11-28 03:15:06,537 INFO L78 Accepts]: Start accepts. Automaton has 1697 states and 2291 transitions. Word has length 64 [2024-11-28 03:15:06,538 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:15:06,538 INFO L471 AbstractCegarLoop]: Abstraction has 1697 states and 2291 transitions. [2024-11-28 03:15:06,538 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 15.75) internal successors, (63), 4 states have internal predecessors, (63), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:15:06,538 INFO L276 IsEmpty]: Start isEmpty. Operand 1697 states and 2291 transitions. [2024-11-28 03:15:06,539 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2024-11-28 03:15:06,539 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:15:06,539 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:15:06,555 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afaf1da2-9026-4419-a97d-8030abe8619e/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2024-11-28 03:15:06,739 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afaf1da2-9026-4419-a97d-8030abe8619e/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:15:06,740 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting alt_mallocErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, alt_mallocErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alt_mallocErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 519 more)] === [2024-11-28 03:15:06,740 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:15:06,740 INFO L85 PathProgramCache]: Analyzing trace with hash 1129088036, now seen corresponding path program 1 times [2024-11-28 03:15:06,741 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 03:15:06,741 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [32960152] [2024-11-28 03:15:06,741 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:15:06,741 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:15:06,742 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afaf1da2-9026-4419-a97d-8030abe8619e/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:15:06,744 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afaf1da2-9026-4419-a97d-8030abe8619e/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:15:06,749 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afaf1da2-9026-4419-a97d-8030abe8619e/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-11-28 03:15:07,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:15:07,046 INFO L256 TraceCheckSpWp]: Trace formula consists of 337 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-11-28 03:15:07,050 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:15:07,111 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 03:15:07,112 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 9 [2024-11-28 03:15:07,235 INFO L349 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2024-11-28 03:15:07,235 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 [2024-11-28 03:15:08,221 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:15:08,221 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 03:15:08,222 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 03:15:08,222 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [32960152] [2024-11-28 03:15:08,222 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [32960152] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:15:08,222 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:15:08,222 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-28 03:15:08,222 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [465830514] [2024-11-28 03:15:08,222 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:15:08,222 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-28 03:15:08,222 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 03:15:08,223 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-28 03:15:08,223 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-28 03:15:08,223 INFO L87 Difference]: Start difference. First operand 1697 states and 2291 transitions. Second operand has 6 states, 5 states have (on average 12.6) internal successors, (63), 5 states have internal predecessors, (63), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:15:13,805 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:15:13,805 INFO L93 Difference]: Finished difference Result 1702 states and 2297 transitions. [2024-11-28 03:15:13,805 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 03:15:13,805 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 12.6) internal successors, (63), 5 states have internal predecessors, (63), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 64 [2024-11-28 03:15:13,806 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:15:13,810 INFO L225 Difference]: With dead ends: 1702 [2024-11-28 03:15:13,811 INFO L226 Difference]: Without dead ends: 1702 [2024-11-28 03:15:13,811 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 58 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2024-11-28 03:15:13,811 INFO L435 NwaCegarLoop]: 953 mSDtfsCounter, 80 mSDsluCounter, 1857 mSDsCounter, 0 mSdLazyCounter, 2089 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 80 SdHoareTripleChecker+Valid, 2810 SdHoareTripleChecker+Invalid, 2091 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 2089 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.5s IncrementalHoareTripleChecker+Time [2024-11-28 03:15:13,811 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [80 Valid, 2810 Invalid, 2091 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 2089 Invalid, 0 Unknown, 0 Unchecked, 5.5s Time] [2024-11-28 03:15:13,814 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1702 states. [2024-11-28 03:15:13,832 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1702 to 1702. [2024-11-28 03:15:13,834 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1702 states, 1281 states have (on average 1.7494145199063231) internal successors, (2241), 1671 states have internal predecessors, (2241), 30 states have call successors, (30), 10 states have call predecessors, (30), 7 states have return successors, (26), 22 states have call predecessors, (26), 26 states have call successors, (26) [2024-11-28 03:15:13,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1702 states to 1702 states and 2297 transitions. [2024-11-28 03:15:13,837 INFO L78 Accepts]: Start accepts. Automaton has 1702 states and 2297 transitions. Word has length 64 [2024-11-28 03:15:13,837 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:15:13,838 INFO L471 AbstractCegarLoop]: Abstraction has 1702 states and 2297 transitions. [2024-11-28 03:15:13,838 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 12.6) internal successors, (63), 5 states have internal predecessors, (63), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:15:13,838 INFO L276 IsEmpty]: Start isEmpty. Operand 1702 states and 2297 transitions. [2024-11-28 03:15:13,839 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2024-11-28 03:15:13,839 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:15:13,839 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:15:13,851 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afaf1da2-9026-4419-a97d-8030abe8619e/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2024-11-28 03:15:14,040 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afaf1da2-9026-4419-a97d-8030abe8619e/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:15:14,040 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, alt_mallocErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alt_mallocErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 519 more)] === [2024-11-28 03:15:14,040 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:15:14,040 INFO L85 PathProgramCache]: Analyzing trace with hash -1186416219, now seen corresponding path program 1 times [2024-11-28 03:15:14,041 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 03:15:14,041 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1790515177] [2024-11-28 03:15:14,041 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:15:14,041 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:15:14,041 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afaf1da2-9026-4419-a97d-8030abe8619e/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:15:14,043 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afaf1da2-9026-4419-a97d-8030abe8619e/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:15:14,044 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afaf1da2-9026-4419-a97d-8030abe8619e/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2024-11-28 03:15:14,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:15:14,386 INFO L256 TraceCheckSpWp]: Trace formula consists of 370 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-11-28 03:15:14,388 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:15:14,689 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:15:14,689 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 03:15:14,690 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 03:15:14,690 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1790515177] [2024-11-28 03:15:14,690 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1790515177] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:15:14,690 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:15:14,690 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-28 03:15:14,690 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1970802610] [2024-11-28 03:15:14,690 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:15:14,691 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-28 03:15:14,691 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 03:15:14,691 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-28 03:15:14,692 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-11-28 03:15:14,692 INFO L87 Difference]: Start difference. First operand 1702 states and 2297 transitions. Second operand has 8 states, 7 states have (on average 9.857142857142858) internal successors, (69), 5 states have internal predecessors, (69), 3 states have call successors, (3), 3 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:15:14,872 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:15:14,873 INFO L93 Difference]: Finished difference Result 1710 states and 2305 transitions. [2024-11-28 03:15:14,873 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-28 03:15:14,873 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 9.857142857142858) internal successors, (69), 5 states have internal predecessors, (69), 3 states have call successors, (3), 3 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 72 [2024-11-28 03:15:14,874 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:15:14,879 INFO L225 Difference]: With dead ends: 1710 [2024-11-28 03:15:14,879 INFO L226 Difference]: Without dead ends: 1710 [2024-11-28 03:15:14,879 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 65 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-11-28 03:15:14,884 INFO L435 NwaCegarLoop]: 974 mSDtfsCounter, 25 mSDsluCounter, 4937 mSDsCounter, 0 mSdLazyCounter, 54 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 5911 SdHoareTripleChecker+Invalid, 55 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 54 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 03:15:14,884 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 5911 Invalid, 55 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 54 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 03:15:14,886 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1710 states. [2024-11-28 03:15:14,920 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1710 to 1709. [2024-11-28 03:15:14,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1709 states, 1286 states have (on average 1.7465007776049766) internal successors, (2246), 1677 states have internal predecessors, (2246), 31 states have call successors, (31), 11 states have call predecessors, (31), 8 states have return successors, (27), 22 states have call predecessors, (27), 27 states have call successors, (27) [2024-11-28 03:15:14,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1709 states to 1709 states and 2304 transitions. [2024-11-28 03:15:14,929 INFO L78 Accepts]: Start accepts. Automaton has 1709 states and 2304 transitions. Word has length 72 [2024-11-28 03:15:14,929 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:15:14,929 INFO L471 AbstractCegarLoop]: Abstraction has 1709 states and 2304 transitions. [2024-11-28 03:15:14,929 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 9.857142857142858) internal successors, (69), 5 states have internal predecessors, (69), 3 states have call successors, (3), 3 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:15:14,929 INFO L276 IsEmpty]: Start isEmpty. Operand 1709 states and 2304 transitions. [2024-11-28 03:15:14,930 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2024-11-28 03:15:14,930 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:15:14,930 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:15:14,946 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afaf1da2-9026-4419-a97d-8030abe8619e/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2024-11-28 03:15:15,134 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afaf1da2-9026-4419-a97d-8030abe8619e/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:15:15,134 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr70REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, alt_mallocErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alt_mallocErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 519 more)] === [2024-11-28 03:15:15,134 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:15:15,135 INFO L85 PathProgramCache]: Analyzing trace with hash 2020879778, now seen corresponding path program 1 times [2024-11-28 03:15:15,135 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 03:15:15,135 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [89511378] [2024-11-28 03:15:15,135 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:15:15,136 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:15:15,136 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afaf1da2-9026-4419-a97d-8030abe8619e/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:15:15,138 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afaf1da2-9026-4419-a97d-8030abe8619e/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:15:15,139 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afaf1da2-9026-4419-a97d-8030abe8619e/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2024-11-28 03:15:15,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:15:15,452 INFO L256 TraceCheckSpWp]: Trace formula consists of 379 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-28 03:15:15,454 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:15:15,693 INFO L349 Elim1Store]: treesize reduction 24, result has 33.3 percent of original size [2024-11-28 03:15:15,693 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 21 treesize of output 20 [2024-11-28 03:15:15,699 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:15:15,700 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 03:15:15,700 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 03:15:15,700 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [89511378] [2024-11-28 03:15:15,700 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [89511378] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:15:15,700 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:15:15,700 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-28 03:15:15,700 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1732388745] [2024-11-28 03:15:15,701 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:15:15,701 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-28 03:15:15,701 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 03:15:15,702 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-28 03:15:15,702 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-28 03:15:15,703 INFO L87 Difference]: Start difference. First operand 1709 states and 2304 transitions. Second operand has 5 states, 4 states have (on average 17.75) internal successors, (71), 5 states have internal predecessors, (71), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-28 03:15:20,448 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] [2024-11-28 03:15:25,159 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:15:25,159 INFO L93 Difference]: Finished difference Result 2147 states and 2865 transitions. [2024-11-28 03:15:25,160 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-28 03:15:25,160 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 17.75) internal successors, (71), 5 states have internal predecessors, (71), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 75 [2024-11-28 03:15:25,160 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:15:25,165 INFO L225 Difference]: With dead ends: 2147 [2024-11-28 03:15:25,165 INFO L226 Difference]: Without dead ends: 2147 [2024-11-28 03:15:25,165 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 71 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-28 03:15:25,166 INFO L435 NwaCegarLoop]: 530 mSDtfsCounter, 820 mSDsluCounter, 1239 mSDsCounter, 0 mSdLazyCounter, 1637 mSolverCounterSat, 27 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 823 SdHoareTripleChecker+Valid, 1769 SdHoareTripleChecker+Invalid, 1667 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 1637 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.4s IncrementalHoareTripleChecker+Time [2024-11-28 03:15:25,166 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [823 Valid, 1769 Invalid, 1667 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 1637 Invalid, 3 Unknown, 0 Unchecked, 9.4s Time] [2024-11-28 03:15:25,168 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2147 states. [2024-11-28 03:15:25,193 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2147 to 1706. [2024-11-28 03:15:25,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1706 states, 1286 states have (on average 1.7418351477449456) internal successors, (2240), 1674 states have internal predecessors, (2240), 31 states have call successors, (31), 11 states have call predecessors, (31), 8 states have return successors, (27), 22 states have call predecessors, (27), 27 states have call successors, (27) [2024-11-28 03:15:25,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1706 states to 1706 states and 2298 transitions. [2024-11-28 03:15:25,200 INFO L78 Accepts]: Start accepts. Automaton has 1706 states and 2298 transitions. Word has length 75 [2024-11-28 03:15:25,200 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:15:25,200 INFO L471 AbstractCegarLoop]: Abstraction has 1706 states and 2298 transitions. [2024-11-28 03:15:25,200 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 17.75) internal successors, (71), 5 states have internal predecessors, (71), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-28 03:15:25,200 INFO L276 IsEmpty]: Start isEmpty. Operand 1706 states and 2298 transitions. [2024-11-28 03:15:25,201 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2024-11-28 03:15:25,201 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:15:25,201 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:15:25,218 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afaf1da2-9026-4419-a97d-8030abe8619e/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2024-11-28 03:15:25,402 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afaf1da2-9026-4419-a97d-8030abe8619e/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:15:25,402 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr71REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, alt_mallocErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alt_mallocErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 519 more)] === [2024-11-28 03:15:25,402 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:15:25,402 INFO L85 PathProgramCache]: Analyzing trace with hash 2020879779, now seen corresponding path program 1 times [2024-11-28 03:15:25,403 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 03:15:25,403 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1552423322] [2024-11-28 03:15:25,403 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:15:25,403 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:15:25,403 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afaf1da2-9026-4419-a97d-8030abe8619e/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:15:25,405 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afaf1da2-9026-4419-a97d-8030abe8619e/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:15:25,406 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afaf1da2-9026-4419-a97d-8030abe8619e/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2024-11-28 03:15:25,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:15:25,732 INFO L256 TraceCheckSpWp]: Trace formula consists of 379 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-11-28 03:15:25,735 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:15:25,740 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2024-11-28 03:15:26,433 WARN L873 $PredicateComparison]: unable to prove that (exists ((|alt_malloc_#res.base| (_ BitVec 32))) (and (= (store |c_old(#length)| |alt_malloc_#res.base| (select |c_#length| |alt_malloc_#res.base|)) |c_#length|) (= (_ bv0 1) (select |c_old(#valid)| |alt_malloc_#res.base|)))) is different from true [2024-11-28 03:15:26,459 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 03:15:26,459 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 9 [2024-11-28 03:15:26,480 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2024-11-28 03:15:26,480 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2024-11-28 03:15:26,486 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:15:26,486 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 03:15:26,487 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 03:15:26,487 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1552423322] [2024-11-28 03:15:26,487 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1552423322] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:15:26,487 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:15:26,487 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-28 03:15:26,490 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1247539689] [2024-11-28 03:15:26,490 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:15:26,491 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-28 03:15:26,491 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 03:15:26,491 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-28 03:15:26,492 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=21, Unknown=1, NotChecked=8, Total=42 [2024-11-28 03:15:26,492 INFO L87 Difference]: Start difference. First operand 1706 states and 2298 transitions. Second operand has 7 states, 6 states have (on average 11.833333333333334) internal successors, (71), 7 states have internal predecessors, (71), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-28 03:15:34,912 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:15:34,913 INFO L93 Difference]: Finished difference Result 2880 states and 3836 transitions. [2024-11-28 03:15:34,913 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-28 03:15:34,913 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 11.833333333333334) internal successors, (71), 7 states have internal predecessors, (71), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 75 [2024-11-28 03:15:34,913 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:15:34,920 INFO L225 Difference]: With dead ends: 2880 [2024-11-28 03:15:34,920 INFO L226 Difference]: Without dead ends: 2880 [2024-11-28 03:15:34,920 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 69 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=28, Unknown=1, NotChecked=10, Total=56 [2024-11-28 03:15:34,921 INFO L435 NwaCegarLoop]: 1035 mSDtfsCounter, 1580 mSDsluCounter, 1622 mSDsCounter, 0 mSdLazyCounter, 2940 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1583 SdHoareTripleChecker+Valid, 2657 SdHoareTripleChecker+Invalid, 4858 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 2940 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1891 IncrementalHoareTripleChecker+Unchecked, 8.3s IncrementalHoareTripleChecker+Time [2024-11-28 03:15:34,921 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1583 Valid, 2657 Invalid, 4858 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 2940 Invalid, 0 Unknown, 1891 Unchecked, 8.3s Time] [2024-11-28 03:15:34,923 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2880 states. [2024-11-28 03:15:34,957 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2880 to 1698. [2024-11-28 03:15:34,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1698 states, 1286 states have (on average 1.729393468118196) internal successors, (2224), 1666 states have internal predecessors, (2224), 31 states have call successors, (31), 11 states have call predecessors, (31), 8 states have return successors, (27), 22 states have call predecessors, (27), 27 states have call successors, (27) [2024-11-28 03:15:34,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1698 states to 1698 states and 2282 transitions. [2024-11-28 03:15:34,971 INFO L78 Accepts]: Start accepts. Automaton has 1698 states and 2282 transitions. Word has length 75 [2024-11-28 03:15:34,974 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:15:34,974 INFO L471 AbstractCegarLoop]: Abstraction has 1698 states and 2282 transitions. [2024-11-28 03:15:34,974 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 11.833333333333334) internal successors, (71), 7 states have internal predecessors, (71), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-28 03:15:34,974 INFO L276 IsEmpty]: Start isEmpty. Operand 1698 states and 2282 transitions. [2024-11-28 03:15:34,975 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2024-11-28 03:15:34,975 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:15:34,975 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:15:34,994 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afaf1da2-9026-4419-a97d-8030abe8619e/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2024-11-28 03:15:35,176 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afaf1da2-9026-4419-a97d-8030abe8619e/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:15:35,176 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting alt_bzeroErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, alt_mallocErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alt_mallocErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 519 more)] === [2024-11-28 03:15:35,177 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:15:35,177 INFO L85 PathProgramCache]: Analyzing trace with hash 56322763, now seen corresponding path program 1 times [2024-11-28 03:15:35,178 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 03:15:35,178 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1158772993] [2024-11-28 03:15:35,178 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:15:35,178 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:15:35,178 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afaf1da2-9026-4419-a97d-8030abe8619e/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:15:35,180 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afaf1da2-9026-4419-a97d-8030abe8619e/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:15:35,184 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afaf1da2-9026-4419-a97d-8030abe8619e/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2024-11-28 03:15:35,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:15:35,513 INFO L256 TraceCheckSpWp]: Trace formula consists of 425 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-28 03:15:35,516 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:15:35,521 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2024-11-28 03:15:35,545 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2024-11-28 03:15:35,582 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2024-11-28 03:15:35,635 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:15:35,635 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 03:15:35,635 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 03:15:35,635 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1158772993] [2024-11-28 03:15:35,635 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1158772993] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:15:35,635 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:15:35,635 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-28 03:15:35,635 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [297446203] [2024-11-28 03:15:35,636 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:15:35,636 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-28 03:15:35,636 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 03:15:35,636 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-28 03:15:35,637 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-28 03:15:35,637 INFO L87 Difference]: Start difference. First operand 1698 states and 2282 transitions. Second operand has 8 states, 6 states have (on average 12.833333333333334) internal successors, (77), 6 states have internal predecessors, (77), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-28 03:15:41,095 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:15:41,095 INFO L93 Difference]: Finished difference Result 1713 states and 2298 transitions. [2024-11-28 03:15:41,096 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-28 03:15:41,096 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 6 states have (on average 12.833333333333334) internal successors, (77), 6 states have internal predecessors, (77), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 82 [2024-11-28 03:15:41,096 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:15:41,100 INFO L225 Difference]: With dead ends: 1713 [2024-11-28 03:15:41,100 INFO L226 Difference]: Without dead ends: 1713 [2024-11-28 03:15:41,100 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 75 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-11-28 03:15:41,101 INFO L435 NwaCegarLoop]: 960 mSDtfsCounter, 16 mSDsluCounter, 3284 mSDsCounter, 0 mSdLazyCounter, 2531 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 4244 SdHoareTripleChecker+Invalid, 2533 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 2531 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.4s IncrementalHoareTripleChecker+Time [2024-11-28 03:15:41,101 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 4244 Invalid, 2533 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 2531 Invalid, 0 Unknown, 0 Unchecked, 5.4s Time] [2024-11-28 03:15:41,103 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1713 states. [2024-11-28 03:15:41,123 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1713 to 1712. [2024-11-28 03:15:41,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1712 states, 1298 states have (on average 1.7257318952234206) internal successors, (2240), 1678 states have internal predecessors, (2240), 31 states have call successors, (31), 13 states have call predecessors, (31), 10 states have return successors, (27), 22 states have call predecessors, (27), 27 states have call successors, (27) [2024-11-28 03:15:41,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1712 states to 1712 states and 2298 transitions. [2024-11-28 03:15:41,129 INFO L78 Accepts]: Start accepts. Automaton has 1712 states and 2298 transitions. Word has length 82 [2024-11-28 03:15:41,129 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:15:41,129 INFO L471 AbstractCegarLoop]: Abstraction has 1712 states and 2298 transitions. [2024-11-28 03:15:41,130 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 6 states have (on average 12.833333333333334) internal successors, (77), 6 states have internal predecessors, (77), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-28 03:15:41,130 INFO L276 IsEmpty]: Start isEmpty. Operand 1712 states and 2298 transitions. [2024-11-28 03:15:41,131 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2024-11-28 03:15:41,131 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:15:41,131 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:15:41,147 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afaf1da2-9026-4419-a97d-8030abe8619e/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Ended with exit code 0 [2024-11-28 03:15:41,331 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afaf1da2-9026-4419-a97d-8030abe8619e/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:15:41,331 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting alt_bzeroErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, alt_mallocErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alt_mallocErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 519 more)] === [2024-11-28 03:15:41,332 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:15:41,332 INFO L85 PathProgramCache]: Analyzing trace with hash 1746005729, now seen corresponding path program 1 times [2024-11-28 03:15:41,332 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 03:15:41,332 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [983853315] [2024-11-28 03:15:41,332 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:15:41,332 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:15:41,332 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afaf1da2-9026-4419-a97d-8030abe8619e/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:15:41,334 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afaf1da2-9026-4419-a97d-8030abe8619e/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:15:41,335 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afaf1da2-9026-4419-a97d-8030abe8619e/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2024-11-28 03:15:41,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:15:41,675 INFO L256 TraceCheckSpWp]: Trace formula consists of 426 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-11-28 03:15:41,680 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:15:41,721 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2024-11-28 03:15:41,800 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2024-11-28 03:15:41,813 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2024-11-28 03:15:41,900 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 9 [2024-11-28 03:15:42,056 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:15:42,057 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 03:15:42,057 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 03:15:42,057 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [983853315] [2024-11-28 03:15:42,057 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [983853315] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:15:42,057 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:15:42,057 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-28 03:15:42,057 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1792379195] [2024-11-28 03:15:42,057 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:15:42,058 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-28 03:15:42,058 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 03:15:42,058 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-28 03:15:42,059 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2024-11-28 03:15:42,060 INFO L87 Difference]: Start difference. First operand 1712 states and 2298 transitions. Second operand has 9 states, 7 states have (on average 11.142857142857142) internal successors, (78), 7 states have internal predecessors, (78), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-28 03:15:49,648 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:15:49,649 INFO L93 Difference]: Finished difference Result 1712 states and 2296 transitions. [2024-11-28 03:15:49,650 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-28 03:15:49,650 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 7 states have (on average 11.142857142857142) internal successors, (78), 7 states have internal predecessors, (78), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 83 [2024-11-28 03:15:49,651 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:15:49,655 INFO L225 Difference]: With dead ends: 1712 [2024-11-28 03:15:49,655 INFO L226 Difference]: Without dead ends: 1712 [2024-11-28 03:15:49,655 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 75 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-11-28 03:15:49,656 INFO L435 NwaCegarLoop]: 956 mSDtfsCounter, 13 mSDsluCounter, 3933 mSDsCounter, 0 mSdLazyCounter, 2852 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 4889 SdHoareTripleChecker+Invalid, 2853 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 2852 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.4s IncrementalHoareTripleChecker+Time [2024-11-28 03:15:49,656 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 4889 Invalid, 2853 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 2852 Invalid, 0 Unknown, 0 Unchecked, 7.4s Time] [2024-11-28 03:15:49,658 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1712 states. [2024-11-28 03:15:49,677 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1712 to 1712. [2024-11-28 03:15:49,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1712 states, 1298 states have (on average 1.724191063174114) internal successors, (2238), 1678 states have internal predecessors, (2238), 31 states have call successors, (31), 13 states have call predecessors, (31), 10 states have return successors, (27), 22 states have call predecessors, (27), 27 states have call successors, (27) [2024-11-28 03:15:49,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1712 states to 1712 states and 2296 transitions. [2024-11-28 03:15:49,683 INFO L78 Accepts]: Start accepts. Automaton has 1712 states and 2296 transitions. Word has length 83 [2024-11-28 03:15:49,683 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:15:49,684 INFO L471 AbstractCegarLoop]: Abstraction has 1712 states and 2296 transitions. [2024-11-28 03:15:49,684 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 7 states have (on average 11.142857142857142) internal successors, (78), 7 states have internal predecessors, (78), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-28 03:15:49,684 INFO L276 IsEmpty]: Start isEmpty. Operand 1712 states and 2296 transitions. [2024-11-28 03:15:49,685 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2024-11-28 03:15:49,685 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:15:49,685 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:15:49,704 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afaf1da2-9026-4419-a97d-8030abe8619e/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Ended with exit code 0 [2024-11-28 03:15:49,886 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afaf1da2-9026-4419-a97d-8030abe8619e/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:15:49,886 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr78REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, alt_mallocErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alt_mallocErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 519 more)] === [2024-11-28 03:15:49,886 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:15:49,886 INFO L85 PathProgramCache]: Analyzing trace with hash -1067569125, now seen corresponding path program 1 times [2024-11-28 03:15:49,887 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 03:15:49,887 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1213780821] [2024-11-28 03:15:49,887 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:15:49,887 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:15:49,887 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afaf1da2-9026-4419-a97d-8030abe8619e/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:15:49,888 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afaf1da2-9026-4419-a97d-8030abe8619e/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:15:49,890 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afaf1da2-9026-4419-a97d-8030abe8619e/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2024-11-28 03:15:50,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:15:50,227 INFO L256 TraceCheckSpWp]: Trace formula consists of 443 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-11-28 03:15:50,229 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:15:50,241 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2024-11-28 03:15:50,409 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2024-11-28 03:15:50,428 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:15:50,428 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 03:15:50,429 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 03:15:50,429 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1213780821] [2024-11-28 03:15:50,429 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1213780821] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:15:50,429 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:15:50,429 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-28 03:15:50,429 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1831443253] [2024-11-28 03:15:50,429 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:15:50,429 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-28 03:15:50,430 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 03:15:50,430 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-28 03:15:50,430 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-11-28 03:15:50,430 INFO L87 Difference]: Start difference. First operand 1712 states and 2296 transitions. Second operand has 8 states, 6 states have (on average 14.0) internal successors, (84), 7 states have internal predecessors, (84), 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) [2024-11-28 03:15:55,637 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:15:55,637 INFO L93 Difference]: Finished difference Result 1743 states and 2336 transitions. [2024-11-28 03:15:55,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-28 03:15:55,638 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 6 states have (on average 14.0) internal successors, (84), 7 states have internal predecessors, (84), 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 90 [2024-11-28 03:15:55,638 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:15:55,641 INFO L225 Difference]: With dead ends: 1743 [2024-11-28 03:15:55,641 INFO L226 Difference]: Without dead ends: 1743 [2024-11-28 03:15:55,641 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 83 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-11-28 03:15:55,642 INFO L435 NwaCegarLoop]: 922 mSDtfsCounter, 43 mSDsluCounter, 2992 mSDsCounter, 0 mSdLazyCounter, 1901 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 3914 SdHoareTripleChecker+Invalid, 1916 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 1901 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.1s IncrementalHoareTripleChecker+Time [2024-11-28 03:15:55,642 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [44 Valid, 3914 Invalid, 1916 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 1901 Invalid, 0 Unknown, 0 Unchecked, 5.1s Time] [2024-11-28 03:15:55,645 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1743 states. [2024-11-28 03:15:55,662 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1743 to 1726. [2024-11-28 03:15:55,665 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1726 states, 1310 states have (on average 1.7206106870229008) internal successors, (2254), 1690 states have internal predecessors, (2254), 31 states have call successors, (31), 13 states have call predecessors, (31), 12 states have return successors, (29), 24 states have call predecessors, (29), 27 states have call successors, (29) [2024-11-28 03:15:55,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1726 states to 1726 states and 2314 transitions. [2024-11-28 03:15:55,668 INFO L78 Accepts]: Start accepts. Automaton has 1726 states and 2314 transitions. Word has length 90 [2024-11-28 03:15:55,669 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:15:55,669 INFO L471 AbstractCegarLoop]: Abstraction has 1726 states and 2314 transitions. [2024-11-28 03:15:55,669 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 6 states have (on average 14.0) internal successors, (84), 7 states have internal predecessors, (84), 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) [2024-11-28 03:15:55,669 INFO L276 IsEmpty]: Start isEmpty. Operand 1726 states and 2314 transitions. [2024-11-28 03:15:55,670 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2024-11-28 03:15:55,670 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:15:55,670 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:15:55,687 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afaf1da2-9026-4419-a97d-8030abe8619e/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Ended with exit code 0 [2024-11-28 03:15:55,871 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afaf1da2-9026-4419-a97d-8030abe8619e/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:15:55,871 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr79REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, alt_mallocErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alt_mallocErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 519 more)] === [2024-11-28 03:15:55,871 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:15:55,871 INFO L85 PathProgramCache]: Analyzing trace with hash -1067569124, now seen corresponding path program 1 times [2024-11-28 03:15:55,872 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 03:15:55,872 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1559985556] [2024-11-28 03:15:55,872 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:15:55,872 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:15:55,872 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afaf1da2-9026-4419-a97d-8030abe8619e/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:15:55,874 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afaf1da2-9026-4419-a97d-8030abe8619e/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:15:55,875 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afaf1da2-9026-4419-a97d-8030abe8619e/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2024-11-28 03:15:56,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:15:56,217 INFO L256 TraceCheckSpWp]: Trace formula consists of 443 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-28 03:15:56,219 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:15:56,283 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:15:56,283 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 03:15:56,283 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 03:15:56,283 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1559985556] [2024-11-28 03:15:56,283 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1559985556] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:15:56,283 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:15:56,283 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-28 03:15:56,283 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2047098462] [2024-11-28 03:15:56,283 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:15:56,284 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-28 03:15:56,284 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 03:15:56,285 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-28 03:15:56,285 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-28 03:15:56,285 INFO L87 Difference]: Start difference. First operand 1726 states and 2314 transitions. Second operand has 5 states, 5 states have (on average 16.8) internal successors, (84), 5 states have internal predecessors, (84), 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) [2024-11-28 03:15:56,374 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:15:56,374 INFO L93 Difference]: Finished difference Result 1728 states and 2314 transitions. [2024-11-28 03:15:56,375 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 03:15:56,375 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.8) internal successors, (84), 5 states have internal predecessors, (84), 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 90 [2024-11-28 03:15:56,376 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:15:56,380 INFO L225 Difference]: With dead ends: 1728 [2024-11-28 03:15:56,380 INFO L226 Difference]: Without dead ends: 1722 [2024-11-28 03:15:56,381 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 86 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-28 03:15:56,382 INFO L435 NwaCegarLoop]: 965 mSDtfsCounter, 3 mSDsluCounter, 2879 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 3844 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 03:15:56,382 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 3844 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 03:15:56,384 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1722 states. [2024-11-28 03:15:56,402 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1722 to 1722. [2024-11-28 03:15:56,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1722 states, 1306 states have (on average 1.7212863705972434) internal successors, (2248), 1688 states have internal predecessors, (2248), 31 states have call successors, (31), 13 states have call predecessors, (31), 12 states have return successors, (29), 22 states have call predecessors, (29), 27 states have call successors, (29) [2024-11-28 03:15:56,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1722 states to 1722 states and 2308 transitions. [2024-11-28 03:15:56,407 INFO L78 Accepts]: Start accepts. Automaton has 1722 states and 2308 transitions. Word has length 90 [2024-11-28 03:15:56,407 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:15:56,408 INFO L471 AbstractCegarLoop]: Abstraction has 1722 states and 2308 transitions. [2024-11-28 03:15:56,408 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.8) internal successors, (84), 5 states have internal predecessors, (84), 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) [2024-11-28 03:15:56,408 INFO L276 IsEmpty]: Start isEmpty. Operand 1722 states and 2308 transitions. [2024-11-28 03:15:56,409 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2024-11-28 03:15:56,409 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:15:56,409 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:15:56,425 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afaf1da2-9026-4419-a97d-8030abe8619e/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2024-11-28 03:15:56,609 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afaf1da2-9026-4419-a97d-8030abe8619e/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:15:56,610 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr78REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, alt_mallocErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alt_mallocErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 519 more)] === [2024-11-28 03:15:56,610 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:15:56,611 INFO L85 PathProgramCache]: Analyzing trace with hash -1246301779, now seen corresponding path program 1 times [2024-11-28 03:15:56,611 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 03:15:56,612 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1274552466] [2024-11-28 03:15:56,612 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:15:56,612 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:15:56,612 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afaf1da2-9026-4419-a97d-8030abe8619e/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:15:56,614 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afaf1da2-9026-4419-a97d-8030abe8619e/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:15:56,617 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afaf1da2-9026-4419-a97d-8030abe8619e/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2024-11-28 03:15:57,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:15:57,036 INFO L256 TraceCheckSpWp]: Trace formula consists of 454 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-28 03:15:57,039 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:15:57,109 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:15:57,109 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:15:57,256 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:15:57,256 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 03:15:57,256 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1274552466] [2024-11-28 03:15:57,256 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1274552466] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 03:15:57,256 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-28 03:15:57,256 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2024-11-28 03:15:57,256 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2010524088] [2024-11-28 03:15:57,256 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-28 03:15:57,257 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-28 03:15:57,257 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 03:15:57,258 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-28 03:15:57,258 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2024-11-28 03:15:57,258 INFO L87 Difference]: Start difference. First operand 1722 states and 2308 transitions. Second operand has 10 states, 10 states have (on average 9.2) internal successors, (92), 10 states have internal predecessors, (92), 1 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-28 03:15:57,600 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:15:57,600 INFO L93 Difference]: Finished difference Result 1748 states and 2338 transitions. [2024-11-28 03:15:57,601 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-28 03:15:57,601 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 9.2) internal successors, (92), 10 states have internal predecessors, (92), 1 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) Word has length 91 [2024-11-28 03:15:57,601 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:15:57,605 INFO L225 Difference]: With dead ends: 1748 [2024-11-28 03:15:57,605 INFO L226 Difference]: Without dead ends: 1736 [2024-11-28 03:15:57,606 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 185 GetRequests, 172 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=80, Invalid=130, Unknown=0, NotChecked=0, Total=210 [2024-11-28 03:15:57,606 INFO L435 NwaCegarLoop]: 965 mSDtfsCounter, 17 mSDsluCounter, 3842 mSDsCounter, 0 mSdLazyCounter, 67 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 4807 SdHoareTripleChecker+Invalid, 72 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 67 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-28 03:15:57,606 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 4807 Invalid, 72 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 67 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-28 03:15:57,609 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1736 states. [2024-11-28 03:15:57,636 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1736 to 1730. [2024-11-28 03:15:57,637 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1730 states, 1314 states have (on average 1.7184170471841704) internal successors, (2258), 1696 states have internal predecessors, (2258), 31 states have call successors, (31), 13 states have call predecessors, (31), 12 states have return successors, (29), 22 states have call predecessors, (29), 27 states have call successors, (29) [2024-11-28 03:15:57,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1730 states to 1730 states and 2318 transitions. [2024-11-28 03:15:57,641 INFO L78 Accepts]: Start accepts. Automaton has 1730 states and 2318 transitions. Word has length 91 [2024-11-28 03:15:57,641 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:15:57,641 INFO L471 AbstractCegarLoop]: Abstraction has 1730 states and 2318 transitions. [2024-11-28 03:15:57,641 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.2) internal successors, (92), 10 states have internal predecessors, (92), 1 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-28 03:15:57,642 INFO L276 IsEmpty]: Start isEmpty. Operand 1730 states and 2318 transitions. [2024-11-28 03:15:57,642 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2024-11-28 03:15:57,642 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:15:57,643 INFO L218 NwaCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:15:57,659 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afaf1da2-9026-4419-a97d-8030abe8619e/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2024-11-28 03:15:57,843 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afaf1da2-9026-4419-a97d-8030abe8619e/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:15:57,843 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr78REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, alt_mallocErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alt_mallocErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 519 more)] === [2024-11-28 03:15:57,844 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:15:57,844 INFO L85 PathProgramCache]: Analyzing trace with hash -1320483685, now seen corresponding path program 2 times [2024-11-28 03:15:57,845 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 03:15:57,845 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [823844045] [2024-11-28 03:15:57,845 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 03:15:57,845 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:15:57,846 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afaf1da2-9026-4419-a97d-8030abe8619e/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:15:57,848 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afaf1da2-9026-4419-a97d-8030abe8619e/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:15:57,851 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afaf1da2-9026-4419-a97d-8030abe8619e/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2024-11-28 03:17:32,787 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 03:17:32,787 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:17:32,812 INFO L256 TraceCheckSpWp]: Trace formula consists of 487 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-28 03:17:32,814 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:17:32,963 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:17:32,963 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:17:33,400 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:17:33,400 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 03:17:33,400 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [823844045] [2024-11-28 03:17:33,400 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [823844045] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 03:17:33,400 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-28 03:17:33,400 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 16 [2024-11-28 03:17:33,400 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [53098461] [2024-11-28 03:17:33,401 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-28 03:17:33,401 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-11-28 03:17:33,401 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 03:17:33,402 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-11-28 03:17:33,402 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=162, Unknown=0, NotChecked=0, Total=240 [2024-11-28 03:17:33,402 INFO L87 Difference]: Start difference. First operand 1730 states and 2318 transitions. Second operand has 16 states, 16 states have (on average 6.125) internal successors, (98), 16 states have internal predecessors, (98), 1 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-28 03:17:34,345 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:17:34,345 INFO L93 Difference]: Finished difference Result 1766 states and 2366 transitions. [2024-11-28 03:17:34,346 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-11-28 03:17:34,346 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 6.125) internal successors, (98), 16 states have internal predecessors, (98), 1 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) Word has length 94 [2024-11-28 03:17:34,347 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:17:34,351 INFO L225 Difference]: With dead ends: 1766 [2024-11-28 03:17:34,351 INFO L226 Difference]: Without dead ends: 1748 [2024-11-28 03:17:34,351 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 197 GetRequests, 172 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 69 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=248, Invalid=454, Unknown=0, NotChecked=0, Total=702 [2024-11-28 03:17:34,352 INFO L435 NwaCegarLoop]: 965 mSDtfsCounter, 40 mSDsluCounter, 6720 mSDsCounter, 0 mSdLazyCounter, 162 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 7685 SdHoareTripleChecker+Invalid, 182 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 162 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-28 03:17:34,352 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [40 Valid, 7685 Invalid, 182 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 162 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-28 03:17:34,354 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1748 states. [2024-11-28 03:17:34,375 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1748 to 1748. [2024-11-28 03:17:34,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1748 states, 1332 states have (on average 1.7117117117117118) internal successors, (2280), 1714 states have internal predecessors, (2280), 31 states have call successors, (31), 13 states have call predecessors, (31), 12 states have return successors, (29), 22 states have call predecessors, (29), 27 states have call successors, (29) [2024-11-28 03:17:34,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1748 states to 1748 states and 2340 transitions. [2024-11-28 03:17:34,381 INFO L78 Accepts]: Start accepts. Automaton has 1748 states and 2340 transitions. Word has length 94 [2024-11-28 03:17:34,381 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:17:34,381 INFO L471 AbstractCegarLoop]: Abstraction has 1748 states and 2340 transitions. [2024-11-28 03:17:34,382 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 6.125) internal successors, (98), 16 states have internal predecessors, (98), 1 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-28 03:17:34,382 INFO L276 IsEmpty]: Start isEmpty. Operand 1748 states and 2340 transitions. [2024-11-28 03:17:34,382 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2024-11-28 03:17:34,383 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:17:34,383 INFO L218 NwaCegarLoop]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:17:34,444 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afaf1da2-9026-4419-a97d-8030abe8619e/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Forceful destruction successful, exit code 0 [2024-11-28 03:17:34,583 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afaf1da2-9026-4419-a97d-8030abe8619e/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:17:34,584 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr78REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, alt_mallocErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alt_mallocErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 519 more)] === [2024-11-28 03:17:34,584 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:17:34,585 INFO L85 PathProgramCache]: Analyzing trace with hash -2137289893, now seen corresponding path program 3 times [2024-11-28 03:17:34,585 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 03:17:34,585 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [738139514] [2024-11-28 03:17:34,586 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-28 03:17:34,586 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:17:34,586 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afaf1da2-9026-4419-a97d-8030abe8619e/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:17:34,589 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afaf1da2-9026-4419-a97d-8030abe8619e/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:17:34,592 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_afaf1da2-9026-4419-a97d-8030abe8619e/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process