./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/ldv-memsafety/memleaks_test23_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_12537f27-287e-433a-b2d7-4c2e02ee148c/bin/uautomizer-verify-aQ6SnzHsRB/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12537f27-287e-433a-b2d7-4c2e02ee148c/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_12537f27-287e-433a-b2d7-4c2e02ee148c/bin/uautomizer-verify-aQ6SnzHsRB/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12537f27-287e-433a-b2d7-4c2e02ee148c/bin/uautomizer-verify-aQ6SnzHsRB/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/ldv-memsafety/memleaks_test23_1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12537f27-287e-433a-b2d7-4c2e02ee148c/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_12537f27-287e-433a-b2d7-4c2e02ee148c/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 03499c01c9320e6c56c78c984f54a0b0b3f62caee089ccaa631f137e86019454 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-11-28 05:09:35,883 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-28 05:09:35,985 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12537f27-287e-433a-b2d7-4c2e02ee148c/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2024-11-28 05:09:35,992 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-28 05:09:35,993 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-28 05:09:36,052 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-28 05:09:36,053 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-28 05:09:36,054 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-28 05:09:36,054 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-28 05:09:36,055 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-28 05:09:36,056 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-28 05:09:36,056 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-28 05:09:36,057 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-28 05:09:36,057 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-28 05:09:36,057 INFO L153 SettingsManager]: * Use SBE=true [2024-11-28 05:09:36,058 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-28 05:09:36,058 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-28 05:09:36,058 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-28 05:09:36,058 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-28 05:09:36,058 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-28 05:09:36,058 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-11-28 05:09:36,058 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-11-28 05:09:36,058 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-11-28 05:09:36,058 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-28 05:09:36,058 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-28 05:09:36,059 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-28 05:09:36,059 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-28 05:09:36,059 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-28 05:09:36,059 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-28 05:09:36,059 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-28 05:09:36,059 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 05:09:36,059 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 05:09:36,059 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 05:09:36,059 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 05:09:36,060 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-28 05:09:36,060 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 05:09:36,060 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 05:09:36,060 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 05:09:36,060 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 05:09:36,060 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-28 05:09:36,060 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-28 05:09:36,062 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-28 05:09:36,062 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-28 05:09:36,063 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-28 05:09:36,063 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-28 05:09:36,063 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-28 05:09:36,064 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-28 05:09:36,064 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_12537f27-287e-433a-b2d7-4c2e02ee148c/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 -> 03499c01c9320e6c56c78c984f54a0b0b3f62caee089ccaa631f137e86019454 [2024-11-28 05:09:36,439 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-28 05:09:36,450 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-28 05:09:36,454 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-28 05:09:36,457 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-28 05:09:36,458 INFO L274 PluginConnector]: CDTParser initialized [2024-11-28 05:09:36,460 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12537f27-287e-433a-b2d7-4c2e02ee148c/bin/uautomizer-verify-aQ6SnzHsRB/../../sv-benchmarks/c/ldv-memsafety/memleaks_test23_1.i [2024-11-28 05:09:40,497 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12537f27-287e-433a-b2d7-4c2e02ee148c/bin/uautomizer-verify-aQ6SnzHsRB/data/e6d752027/ef3fd73f89474224aef78b9f4f04dae7/FLAG3bf97e0aa [2024-11-28 05:09:41,018 INFO L384 CDTParser]: Found 1 translation units. [2024-11-28 05:09:41,022 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12537f27-287e-433a-b2d7-4c2e02ee148c/sv-benchmarks/c/ldv-memsafety/memleaks_test23_1.i [2024-11-28 05:09:41,049 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12537f27-287e-433a-b2d7-4c2e02ee148c/bin/uautomizer-verify-aQ6SnzHsRB/data/e6d752027/ef3fd73f89474224aef78b9f4f04dae7/FLAG3bf97e0aa [2024-11-28 05:09:41,081 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12537f27-287e-433a-b2d7-4c2e02ee148c/bin/uautomizer-verify-aQ6SnzHsRB/data/e6d752027/ef3fd73f89474224aef78b9f4f04dae7 [2024-11-28 05:09:41,085 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-28 05:09:41,087 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-28 05:09:41,089 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-28 05:09:41,089 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-28 05:09:41,096 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-28 05:09:41,097 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 05:09:41" (1/1) ... [2024-11-28 05:09:41,098 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3802f337 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:09:41, skipping insertion in model container [2024-11-28 05:09:41,099 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 05:09:41" (1/1) ... [2024-11-28 05:09:41,170 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-28 05:09:41,715 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-28 05:09:41,821 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-28 05:09:41,827 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 05:09:41,852 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 05:09:41,853 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@14a8f5a5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:09:41, skipping insertion in model container [2024-11-28 05:09:41,854 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-28 05:09:41,854 INFO L186 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2024-11-28 05:09:41,858 INFO L158 Benchmark]: Toolchain (without parser) took 768.97ms. Allocated memory is still 117.4MB. Free memory was 91.1MB in the beginning and 76.1MB in the end (delta: 15.0MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-11-28 05:09:41,862 INFO L158 Benchmark]: CDTParser took 0.46ms. Allocated memory is still 117.4MB. Free memory is still 74.4MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-28 05:09:41,862 INFO L158 Benchmark]: CACSL2BoogieTranslator took 765.50ms. Allocated memory is still 117.4MB. Free memory was 91.0MB in the beginning and 76.1MB in the end (delta: 14.8MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-11-28 05:09:41,864 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.46ms. Allocated memory is still 117.4MB. Free memory is still 74.4MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 765.50ms. Allocated memory is still 117.4MB. Free memory was 91.0MB in the beginning and 76.1MB in the end (delta: 14.8MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 607]: Unsupported Syntax Found a cast between two array/pointer types of different sizes while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12537f27-287e-433a-b2d7-4c2e02ee148c/bin/uautomizer-verify-aQ6SnzHsRB/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12537f27-287e-433a-b2d7-4c2e02ee148c/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_12537f27-287e-433a-b2d7-4c2e02ee148c/bin/uautomizer-verify-aQ6SnzHsRB/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12537f27-287e-433a-b2d7-4c2e02ee148c/bin/uautomizer-verify-aQ6SnzHsRB/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/ldv-memsafety/memleaks_test23_1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12537f27-287e-433a-b2d7-4c2e02ee148c/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_12537f27-287e-433a-b2d7-4c2e02ee148c/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 03499c01c9320e6c56c78c984f54a0b0b3f62caee089ccaa631f137e86019454 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-11-28 05:09:45,047 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-28 05:09:45,200 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12537f27-287e-433a-b2d7-4c2e02ee148c/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2024-11-28 05:09:45,220 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-28 05:09:45,220 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-28 05:09:45,253 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-28 05:09:45,254 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-28 05:09:45,254 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-28 05:09:45,255 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-28 05:09:45,255 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-28 05:09:45,255 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-28 05:09:45,256 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-28 05:09:45,256 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-28 05:09:45,256 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-28 05:09:45,256 INFO L153 SettingsManager]: * Use SBE=true [2024-11-28 05:09:45,257 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-28 05:09:45,257 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-28 05:09:45,257 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-28 05:09:45,257 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-28 05:09:45,258 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-28 05:09:45,258 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-11-28 05:09:45,258 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-11-28 05:09:45,258 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-11-28 05:09:45,258 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-28 05:09:45,258 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-28 05:09:45,259 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2024-11-28 05:09:45,259 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2024-11-28 05:09:45,259 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-28 05:09:45,259 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-28 05:09:45,259 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-28 05:09:45,260 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-28 05:09:45,260 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-28 05:09:45,260 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 05:09:45,260 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 05:09:45,260 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 05:09:45,261 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 05:09:45,261 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-28 05:09:45,261 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 05:09:45,261 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 05:09:45,261 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 05:09:45,262 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 05:09:45,262 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-28 05:09:45,262 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-28 05:09:45,262 INFO L153 SettingsManager]: * Trace refinement strategy=FOX [2024-11-28 05:09:45,262 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2024-11-28 05:09:45,263 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-28 05:09:45,263 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-28 05:09:45,263 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-28 05:09:45,263 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-28 05:09:45,263 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_12537f27-287e-433a-b2d7-4c2e02ee148c/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 -> 03499c01c9320e6c56c78c984f54a0b0b3f62caee089ccaa631f137e86019454 [2024-11-28 05:09:45,664 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-28 05:09:45,680 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-28 05:09:45,685 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-28 05:09:45,689 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-28 05:09:45,690 INFO L274 PluginConnector]: CDTParser initialized [2024-11-28 05:09:45,692 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12537f27-287e-433a-b2d7-4c2e02ee148c/bin/uautomizer-verify-aQ6SnzHsRB/../../sv-benchmarks/c/ldv-memsafety/memleaks_test23_1.i [2024-11-28 05:09:49,521 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12537f27-287e-433a-b2d7-4c2e02ee148c/bin/uautomizer-verify-aQ6SnzHsRB/data/02a1c9ec7/1c786800c4ca4820a8a83efb5f020213/FLAG4ddb4f2d2 [2024-11-28 05:09:49,950 INFO L384 CDTParser]: Found 1 translation units. [2024-11-28 05:09:49,951 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12537f27-287e-433a-b2d7-4c2e02ee148c/sv-benchmarks/c/ldv-memsafety/memleaks_test23_1.i [2024-11-28 05:09:49,971 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12537f27-287e-433a-b2d7-4c2e02ee148c/bin/uautomizer-verify-aQ6SnzHsRB/data/02a1c9ec7/1c786800c4ca4820a8a83efb5f020213/FLAG4ddb4f2d2 [2024-11-28 05:09:49,991 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12537f27-287e-433a-b2d7-4c2e02ee148c/bin/uautomizer-verify-aQ6SnzHsRB/data/02a1c9ec7/1c786800c4ca4820a8a83efb5f020213 [2024-11-28 05:09:49,994 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-28 05:09:49,996 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-28 05:09:49,998 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-28 05:09:49,999 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-28 05:09:50,003 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-28 05:09:50,004 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 05:09:49" (1/1) ... [2024-11-28 05:09:50,005 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4edbed59 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:09:50, skipping insertion in model container [2024-11-28 05:09:50,006 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 05:09:49" (1/1) ... [2024-11-28 05:09:50,053 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-28 05:09:50,632 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 05:09:50,751 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 05:09:50,761 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 05:09:50,795 INFO L197 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2024-11-28 05:09:50,813 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-28 05:09:50,865 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-28 05:09:50,926 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 05:09:50,932 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 05:09:50,948 INFO L200 MainTranslator]: Completed pre-run [2024-11-28 05:09:51,050 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 05:09:51,135 INFO L204 MainTranslator]: Completed translation [2024-11-28 05:09:51,137 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:09:51 WrapperNode [2024-11-28 05:09:51,137 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-28 05:09:51,140 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-28 05:09:51,142 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-28 05:09:51,142 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-28 05:09:51,151 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:09:51" (1/1) ... [2024-11-28 05:09:51,178 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:09:51" (1/1) ... [2024-11-28 05:09:51,215 INFO L138 Inliner]: procedures = 175, calls = 121, calls flagged for inlining = 30, calls inlined = 15, statements flattened = 206 [2024-11-28 05:09:51,216 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-28 05:09:51,216 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-28 05:09:51,217 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-28 05:09:51,217 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-28 05:09:51,229 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:09:51" (1/1) ... [2024-11-28 05:09:51,229 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:09:51" (1/1) ... [2024-11-28 05:09:51,236 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:09:51" (1/1) ... [2024-11-28 05:09:51,307 INFO L175 MemorySlicer]: Split 37 memory accesses to 4 slices as follows [2, 1, 5, 29]. 78 percent of accesses are in the largest equivalence class. The 4 initializations are split as follows [2, 0, 0, 2]. The 17 writes are split as follows [0, 0, 4, 13]. [2024-11-28 05:09:51,307 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:09:51" (1/1) ... [2024-11-28 05:09:51,308 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:09:51" (1/1) ... [2024-11-28 05:09:51,351 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:09:51" (1/1) ... [2024-11-28 05:09:51,353 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:09:51" (1/1) ... [2024-11-28 05:09:51,360 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:09:51" (1/1) ... [2024-11-28 05:09:51,367 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:09:51" (1/1) ... [2024-11-28 05:09:51,370 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:09:51" (1/1) ... [2024-11-28 05:09:51,376 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-28 05:09:51,377 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-28 05:09:51,377 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-28 05:09:51,377 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-28 05:09:51,378 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:09:51" (1/1) ... [2024-11-28 05:09:51,386 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 05:09:51,408 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12537f27-287e-433a-b2d7-4c2e02ee148c/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 05:09:51,427 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12537f27-287e-433a-b2d7-4c2e02ee148c/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-28 05:09:51,433 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12537f27-287e-433a-b2d7-4c2e02ee148c/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-28 05:09:51,479 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#0 [2024-11-28 05:09:51,479 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#1 [2024-11-28 05:09:51,479 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#2 [2024-11-28 05:09:51,479 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#3 [2024-11-28 05:09:51,479 INFO L130 BoogieDeclarations]: Found specification of procedure LDV_INIT_LIST_HEAD [2024-11-28 05:09:51,480 INFO L138 BoogieDeclarations]: Found implementation of procedure LDV_INIT_LIST_HEAD [2024-11-28 05:09:51,480 INFO L130 BoogieDeclarations]: Found specification of procedure __ldv_list_add [2024-11-28 05:09:51,481 INFO L138 BoogieDeclarations]: Found implementation of procedure __ldv_list_add [2024-11-28 05:09:51,481 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2024-11-28 05:09:51,481 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2024-11-28 05:09:51,482 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-28 05:09:51,482 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-28 05:09:51,482 INFO L130 BoogieDeclarations]: Found specification of procedure free_reports [2024-11-28 05:09:51,482 INFO L138 BoogieDeclarations]: Found implementation of procedure free_reports [2024-11-28 05:09:51,482 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-28 05:09:51,482 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2024-11-28 05:09:51,482 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2024-11-28 05:09:51,482 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2024-11-28 05:09:51,482 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#3 [2024-11-28 05:09:51,482 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2024-11-28 05:09:51,483 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2024-11-28 05:09:51,483 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2024-11-28 05:09:51,483 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#3 [2024-11-28 05:09:51,483 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#0 [2024-11-28 05:09:51,483 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#1 [2024-11-28 05:09:51,483 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#2 [2024-11-28 05:09:51,483 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#3 [2024-11-28 05:09:51,483 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-28 05:09:51,483 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#0 [2024-11-28 05:09:51,487 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#1 [2024-11-28 05:09:51,487 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#2 [2024-11-28 05:09:51,487 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#3 [2024-11-28 05:09:51,487 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_list_del [2024-11-28 05:09:51,487 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_list_del [2024-11-28 05:09:51,487 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2024-11-28 05:09:51,487 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2024-11-28 05:09:51,487 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-28 05:09:51,487 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-28 05:09:51,811 INFO L234 CfgBuilder]: Building ICFG [2024-11-28 05:09:51,814 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-28 05:09:52,882 INFO L? ?]: Removed 248 outVars from TransFormulas that were not future-live. [2024-11-28 05:09:52,882 INFO L283 CfgBuilder]: Performing block encoding [2024-11-28 05:09:52,903 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-28 05:09:52,907 INFO L312 CfgBuilder]: Removed 2 assume(true) statements. [2024-11-28 05:09:52,908 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 05:09:52 BoogieIcfgContainer [2024-11-28 05:09:52,908 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-28 05:09:52,911 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-28 05:09:52,912 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-28 05:09:52,920 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-28 05:09:52,920 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 05:09:49" (1/3) ... [2024-11-28 05:09:52,921 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@44bcc351 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 05:09:52, skipping insertion in model container [2024-11-28 05:09:52,921 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:09:51" (2/3) ... [2024-11-28 05:09:52,923 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@44bcc351 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 05:09:52, skipping insertion in model container [2024-11-28 05:09:52,924 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 05:09:52" (3/3) ... [2024-11-28 05:09:52,927 INFO L128 eAbstractionObserver]: Analyzing ICFG memleaks_test23_1.i [2024-11-28 05:09:52,947 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-28 05:09:52,949 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG memleaks_test23_1.i that has 7 procedures, 206 locations, 1 initial locations, 2 loop locations, and 80 error locations. [2024-11-28 05:09:53,014 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-28 05:09:53,031 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;@57fa326c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-28 05:09:53,031 INFO L334 AbstractCegarLoop]: Starting to check reachability of 80 error locations. [2024-11-28 05:09:53,038 INFO L276 IsEmpty]: Start isEmpty. Operand has 206 states, 111 states have (on average 1.8558558558558558) internal successors, (206), 191 states have internal predecessors, (206), 8 states have call successors, (8), 6 states have call predecessors, (8), 6 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2024-11-28 05:09:53,047 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2024-11-28 05:09:53,048 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 05:09:53,049 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 05:09:53,050 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting LDV_INIT_LIST_HEADErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [free_reportsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 77 more)] === [2024-11-28 05:09:53,055 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:09:53,056 INFO L85 PathProgramCache]: Analyzing trace with hash 1118153552, now seen corresponding path program 1 times [2024-11-28 05:09:53,065 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 05:09:53,066 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [644392411] [2024-11-28 05:09:53,066 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:09:53,067 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:09:53,067 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12537f27-287e-433a-b2d7-4c2e02ee148c/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 05:09:53,069 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12537f27-287e-433a-b2d7-4c2e02ee148c/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 05:09:53,071 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12537f27-287e-433a-b2d7-4c2e02ee148c/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-28 05:09:53,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:09:53,258 INFO L256 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-28 05:09:53,264 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 05:09:53,339 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 05:09:53,466 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 05:09:53,466 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 05:09:53,467 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 05:09:53,468 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [644392411] [2024-11-28 05:09:53,468 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [644392411] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 05:09:53,468 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 05:09:53,469 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-28 05:09:53,471 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1899762240] [2024-11-28 05:09:53,472 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 05:09:53,477 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-28 05:09:53,477 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 05:09:53,510 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-28 05:09:53,511 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-28 05:09:53,515 INFO L87 Difference]: Start difference. First operand has 206 states, 111 states have (on average 1.8558558558558558) internal successors, (206), 191 states have internal predecessors, (206), 8 states have call successors, (8), 6 states have call predecessors, (8), 6 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) Second operand has 7 states, 6 states have (on average 1.5) internal successors, (9), 5 states have internal predecessors, (9), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-28 05:09:54,841 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 05:09:54,842 INFO L93 Difference]: Finished difference Result 222 states and 238 transitions. [2024-11-28 05:09:54,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-28 05:09:54,845 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 1.5) internal successors, (9), 5 states have internal predecessors, (9), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 12 [2024-11-28 05:09:54,846 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 05:09:54,857 INFO L225 Difference]: With dead ends: 222 [2024-11-28 05:09:54,857 INFO L226 Difference]: Without dead ends: 220 [2024-11-28 05:09:54,860 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-11-28 05:09:54,866 INFO L435 NwaCegarLoop]: 207 mSDtfsCounter, 10 mSDsluCounter, 637 mSDsCounter, 0 mSdLazyCounter, 468 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 844 SdHoareTripleChecker+Invalid, 472 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 468 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2024-11-28 05:09:54,867 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 844 Invalid, 472 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 468 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2024-11-28 05:09:54,889 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 220 states. [2024-11-28 05:09:54,945 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 220 to 213. [2024-11-28 05:09:54,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 213 states, 117 states have (on average 1.8034188034188035) internal successors, (211), 196 states have internal predecessors, (211), 9 states have call successors, (9), 7 states have call predecessors, (9), 8 states have return successors, (10), 9 states have call predecessors, (10), 9 states have call successors, (10) [2024-11-28 05:09:54,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 213 states to 213 states and 230 transitions. [2024-11-28 05:09:54,960 INFO L78 Accepts]: Start accepts. Automaton has 213 states and 230 transitions. Word has length 12 [2024-11-28 05:09:54,960 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 05:09:54,961 INFO L471 AbstractCegarLoop]: Abstraction has 213 states and 230 transitions. [2024-11-28 05:09:54,961 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 1.5) internal successors, (9), 5 states have internal predecessors, (9), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-28 05:09:54,961 INFO L276 IsEmpty]: Start isEmpty. Operand 213 states and 230 transitions. [2024-11-28 05:09:54,962 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2024-11-28 05:09:54,962 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 05:09:54,962 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 05:09:54,976 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12537f27-287e-433a-b2d7-4c2e02ee148c/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-28 05:09:55,163 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12537f27-287e-433a-b2d7-4c2e02ee148c/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:09:55,164 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting LDV_INIT_LIST_HEADErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [free_reportsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 77 more)] === [2024-11-28 05:09:55,165 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:09:55,165 INFO L85 PathProgramCache]: Analyzing trace with hash 1118153553, now seen corresponding path program 1 times [2024-11-28 05:09:55,166 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 05:09:55,169 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1971421782] [2024-11-28 05:09:55,169 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:09:55,169 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:09:55,169 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12537f27-287e-433a-b2d7-4c2e02ee148c/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 05:09:55,174 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12537f27-287e-433a-b2d7-4c2e02ee148c/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 05:09:55,179 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12537f27-287e-433a-b2d7-4c2e02ee148c/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-28 05:09:55,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:09:55,345 INFO L256 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-28 05:09:55,347 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 05:09:55,382 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 05:09:55,650 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 05:09:55,650 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 05:09:55,650 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 05:09:55,650 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1971421782] [2024-11-28 05:09:55,653 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1971421782] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 05:09:55,654 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 05:09:55,654 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-28 05:09:55,654 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [754489910] [2024-11-28 05:09:55,654 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 05:09:55,655 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-28 05:09:55,655 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 05:09:55,656 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-28 05:09:55,657 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-28 05:09:55,659 INFO L87 Difference]: Start difference. First operand 213 states and 230 transitions. Second operand has 8 states, 7 states have (on average 1.2857142857142858) internal successors, (9), 6 states have internal predecessors, (9), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-28 05:09:57,041 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 05:09:57,042 INFO L93 Difference]: Finished difference Result 217 states and 232 transitions. [2024-11-28 05:09:57,043 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-28 05:09:57,044 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 1.2857142857142858) internal successors, (9), 6 states have internal predecessors, (9), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 12 [2024-11-28 05:09:57,044 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 05:09:57,047 INFO L225 Difference]: With dead ends: 217 [2024-11-28 05:09:57,050 INFO L226 Difference]: Without dead ends: 217 [2024-11-28 05:09:57,051 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-11-28 05:09:57,052 INFO L435 NwaCegarLoop]: 206 mSDtfsCounter, 10 mSDsluCounter, 903 mSDsCounter, 0 mSdLazyCounter, 418 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 1109 SdHoareTripleChecker+Invalid, 419 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 418 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2024-11-28 05:09:57,052 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 1109 Invalid, 419 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 418 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2024-11-28 05:09:57,054 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 217 states. [2024-11-28 05:09:57,070 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 217 to 213. [2024-11-28 05:09:57,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 213 states, 117 states have (on average 1.7863247863247864) internal successors, (209), 196 states have internal predecessors, (209), 9 states have call successors, (9), 7 states have call predecessors, (9), 8 states have return successors, (10), 9 states have call predecessors, (10), 9 states have call successors, (10) [2024-11-28 05:09:57,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 213 states to 213 states and 228 transitions. [2024-11-28 05:09:57,076 INFO L78 Accepts]: Start accepts. Automaton has 213 states and 228 transitions. Word has length 12 [2024-11-28 05:09:57,076 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 05:09:57,077 INFO L471 AbstractCegarLoop]: Abstraction has 213 states and 228 transitions. [2024-11-28 05:09:57,077 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 1.2857142857142858) internal successors, (9), 6 states have internal predecessors, (9), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-28 05:09:57,077 INFO L276 IsEmpty]: Start isEmpty. Operand 213 states and 228 transitions. [2024-11-28 05:09:57,078 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2024-11-28 05:09:57,078 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 05:09:57,078 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 05:09:57,086 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12537f27-287e-433a-b2d7-4c2e02ee148c/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-28 05:09:57,278 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12537f27-287e-433a-b2d7-4c2e02ee148c/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:09:57,279 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting LDV_INIT_LIST_HEADErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [free_reportsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 77 more)] === [2024-11-28 05:09:57,279 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:09:57,279 INFO L85 PathProgramCache]: Analyzing trace with hash -1434003409, now seen corresponding path program 1 times [2024-11-28 05:09:57,280 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 05:09:57,280 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1664275659] [2024-11-28 05:09:57,280 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:09:57,280 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:09:57,280 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12537f27-287e-433a-b2d7-4c2e02ee148c/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 05:09:57,283 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12537f27-287e-433a-b2d7-4c2e02ee148c/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 05:09:57,284 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12537f27-287e-433a-b2d7-4c2e02ee148c/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-28 05:09:57,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:09:57,406 INFO L256 TraceCheckSpWp]: Trace formula consists of 57 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-28 05:09:57,407 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 05:09:57,509 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 05:09:57,509 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 05:09:57,510 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 05:09:57,510 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1664275659] [2024-11-28 05:09:57,510 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1664275659] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 05:09:57,510 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 05:09:57,510 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-28 05:09:57,510 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [330784452] [2024-11-28 05:09:57,510 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 05:09:57,512 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-28 05:09:57,513 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 05:09:57,515 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-28 05:09:57,516 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-28 05:09:57,516 INFO L87 Difference]: Start difference. First operand 213 states and 228 transitions. Second operand has 5 states, 5 states have (on average 1.8) internal successors, (9), 4 states have internal predecessors, (9), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-28 05:09:57,579 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 05:09:57,580 INFO L93 Difference]: Finished difference Result 204 states and 218 transitions. [2024-11-28 05:09:57,580 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 05:09:57,581 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 1.8) internal successors, (9), 4 states have internal predecessors, (9), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 12 [2024-11-28 05:09:57,581 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 05:09:57,583 INFO L225 Difference]: With dead ends: 204 [2024-11-28 05:09:57,584 INFO L226 Difference]: Without dead ends: 204 [2024-11-28 05:09:57,585 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-28 05:09:57,586 INFO L435 NwaCegarLoop]: 216 mSDtfsCounter, 0 mSDsluCounter, 629 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 845 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 05:09:57,586 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 845 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 05:09:57,589 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 204 states. [2024-11-28 05:09:57,605 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 204 to 204. [2024-11-28 05:09:57,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 204 states, 113 states have (on average 1.7787610619469028) internal successors, (201), 188 states have internal predecessors, (201), 8 states have call successors, (8), 6 states have call predecessors, (8), 7 states have return successors, (9), 9 states have call predecessors, (9), 8 states have call successors, (9) [2024-11-28 05:09:57,612 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 204 states to 204 states and 218 transitions. [2024-11-28 05:09:57,612 INFO L78 Accepts]: Start accepts. Automaton has 204 states and 218 transitions. Word has length 12 [2024-11-28 05:09:57,612 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 05:09:57,612 INFO L471 AbstractCegarLoop]: Abstraction has 204 states and 218 transitions. [2024-11-28 05:09:57,613 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 1.8) internal successors, (9), 4 states have internal predecessors, (9), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-28 05:09:57,613 INFO L276 IsEmpty]: Start isEmpty. Operand 204 states and 218 transitions. [2024-11-28 05:09:57,613 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2024-11-28 05:09:57,613 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 05:09:57,613 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 05:09:57,631 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12537f27-287e-433a-b2d7-4c2e02ee148c/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-11-28 05:09:57,817 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12537f27-287e-433a-b2d7-4c2e02ee148c/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:09:57,819 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr43REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [free_reportsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 77 more)] === [2024-11-28 05:09:57,820 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:09:57,822 INFO L85 PathProgramCache]: Analyzing trace with hash 1118067824, now seen corresponding path program 1 times [2024-11-28 05:09:57,823 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 05:09:57,823 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1906821450] [2024-11-28 05:09:57,823 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:09:57,823 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:09:57,823 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12537f27-287e-433a-b2d7-4c2e02ee148c/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 05:09:57,828 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12537f27-287e-433a-b2d7-4c2e02ee148c/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 05:09:57,833 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12537f27-287e-433a-b2d7-4c2e02ee148c/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-28 05:09:57,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:09:57,954 INFO L256 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-28 05:09:57,956 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 05:09:57,997 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 05:09:57,997 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 05:09:57,997 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 05:09:57,997 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1906821450] [2024-11-28 05:09:57,997 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1906821450] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 05:09:57,997 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 05:09:57,998 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-28 05:09:57,998 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [723109789] [2024-11-28 05:09:57,998 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 05:09:57,998 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-28 05:09:57,998 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 05:09:57,999 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-28 05:09:57,999 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-28 05:09:57,999 INFO L87 Difference]: Start difference. First operand 204 states and 218 transitions. Second operand has 5 states, 5 states have (on average 2.0) internal successors, (10), 4 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-28 05:09:58,070 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 05:09:58,070 INFO L93 Difference]: Finished difference Result 205 states and 218 transitions. [2024-11-28 05:09:58,071 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 05:09:58,072 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.0) internal successors, (10), 4 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 12 [2024-11-28 05:09:58,072 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 05:09:58,073 INFO L225 Difference]: With dead ends: 205 [2024-11-28 05:09:58,073 INFO L226 Difference]: Without dead ends: 205 [2024-11-28 05:09:58,074 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-28 05:09:58,075 INFO L435 NwaCegarLoop]: 208 mSDtfsCounter, 108 mSDsluCounter, 505 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 113 SdHoareTripleChecker+Valid, 713 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 05:09:58,075 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [113 Valid, 713 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 05:09:58,076 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 205 states. [2024-11-28 05:09:58,084 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 205 to 204. [2024-11-28 05:09:58,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 204 states, 113 states have (on average 1.7699115044247788) internal successors, (200), 188 states have internal predecessors, (200), 8 states have call successors, (8), 6 states have call predecessors, (8), 7 states have return successors, (9), 9 states have call predecessors, (9), 8 states have call successors, (9) [2024-11-28 05:09:58,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 204 states to 204 states and 217 transitions. [2024-11-28 05:09:58,087 INFO L78 Accepts]: Start accepts. Automaton has 204 states and 217 transitions. Word has length 12 [2024-11-28 05:09:58,087 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 05:09:58,087 INFO L471 AbstractCegarLoop]: Abstraction has 204 states and 217 transitions. [2024-11-28 05:09:58,088 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.0) internal successors, (10), 4 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-28 05:09:58,088 INFO L276 IsEmpty]: Start isEmpty. Operand 204 states and 217 transitions. [2024-11-28 05:09:58,088 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2024-11-28 05:09:58,088 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 05:09:58,088 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 05:09:58,102 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12537f27-287e-433a-b2d7-4c2e02ee148c/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-28 05:09:58,289 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12537f27-287e-433a-b2d7-4c2e02ee148c/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:09:58,289 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr43REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [free_reportsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 77 more)] === [2024-11-28 05:09:58,290 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:09:58,290 INFO L85 PathProgramCache]: Analyzing trace with hash -1434089137, now seen corresponding path program 1 times [2024-11-28 05:09:58,290 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 05:09:58,291 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [649015074] [2024-11-28 05:09:58,291 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:09:58,291 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:09:58,291 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12537f27-287e-433a-b2d7-4c2e02ee148c/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 05:09:58,296 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12537f27-287e-433a-b2d7-4c2e02ee148c/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 05:09:58,298 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12537f27-287e-433a-b2d7-4c2e02ee148c/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-28 05:09:58,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:09:58,410 INFO L256 TraceCheckSpWp]: Trace formula consists of 59 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-28 05:09:58,411 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 05:09:58,456 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 05:09:58,456 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 05:09:58,457 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 05:09:58,457 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [649015074] [2024-11-28 05:09:58,457 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [649015074] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 05:09:58,457 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 05:09:58,457 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-28 05:09:58,457 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1579728052] [2024-11-28 05:09:58,457 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 05:09:58,459 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-28 05:09:58,459 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 05:09:58,460 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-28 05:09:58,460 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-28 05:09:58,460 INFO L87 Difference]: Start difference. First operand 204 states and 217 transitions. Second operand has 5 states, 5 states have (on average 2.0) internal successors, (10), 5 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-28 05:09:58,506 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 05:09:58,506 INFO L93 Difference]: Finished difference Result 206 states and 219 transitions. [2024-11-28 05:09:58,507 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 05:09:58,508 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.0) internal successors, (10), 5 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 12 [2024-11-28 05:09:58,508 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 05:09:58,509 INFO L225 Difference]: With dead ends: 206 [2024-11-28 05:09:58,509 INFO L226 Difference]: Without dead ends: 206 [2024-11-28 05:09:58,510 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-28 05:09:58,513 INFO L435 NwaCegarLoop]: 211 mSDtfsCounter, 102 mSDsluCounter, 513 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 107 SdHoareTripleChecker+Valid, 724 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 05:09:58,513 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [107 Valid, 724 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 05:09:58,515 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 206 states. [2024-11-28 05:09:58,526 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 206 to 206. [2024-11-28 05:09:58,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 206 states, 115 states have (on average 1.7565217391304349) internal successors, (202), 190 states have internal predecessors, (202), 8 states have call successors, (8), 6 states have call predecessors, (8), 7 states have return successors, (9), 9 states have call predecessors, (9), 8 states have call successors, (9) [2024-11-28 05:09:58,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 206 states to 206 states and 219 transitions. [2024-11-28 05:09:58,533 INFO L78 Accepts]: Start accepts. Automaton has 206 states and 219 transitions. Word has length 12 [2024-11-28 05:09:58,536 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 05:09:58,537 INFO L471 AbstractCegarLoop]: Abstraction has 206 states and 219 transitions. [2024-11-28 05:09:58,537 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.0) internal successors, (10), 5 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-28 05:09:58,537 INFO L276 IsEmpty]: Start isEmpty. Operand 206 states and 219 transitions. [2024-11-28 05:09:58,537 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2024-11-28 05:09:58,537 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 05:09:58,538 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 05:09:58,550 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12537f27-287e-433a-b2d7-4c2e02ee148c/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-28 05:09:58,738 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12537f27-287e-433a-b2d7-4c2e02ee148c/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:09:58,738 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr50ASSERT_VIOLATIONMEMORY_LEAK === [free_reportsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 77 more)] === [2024-11-28 05:09:58,739 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:09:58,739 INFO L85 PathProgramCache]: Analyzing trace with hash -1507070169, now seen corresponding path program 1 times [2024-11-28 05:09:58,739 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 05:09:58,739 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [164000954] [2024-11-28 05:09:58,739 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:09:58,739 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:09:58,740 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12537f27-287e-433a-b2d7-4c2e02ee148c/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 05:09:58,742 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12537f27-287e-433a-b2d7-4c2e02ee148c/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 05:09:58,743 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12537f27-287e-433a-b2d7-4c2e02ee148c/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-28 05:09:58,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:09:58,849 INFO L256 TraceCheckSpWp]: Trace formula consists of 52 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-28 05:09:58,850 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 05:09:58,893 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 05:09:58,893 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 05:09:58,893 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 05:09:58,893 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [164000954] [2024-11-28 05:09:58,893 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [164000954] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 05:09:58,893 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 05:09:58,894 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 05:09:58,894 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [195462575] [2024-11-28 05:09:58,894 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 05:09:58,894 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 05:09:58,894 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 05:09:58,895 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 05:09:58,895 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 05:09:58,895 INFO L87 Difference]: Start difference. First operand 206 states and 219 transitions. Second operand has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 4 states have internal predecessors, (11), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-28 05:09:59,516 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 05:09:59,516 INFO L93 Difference]: Finished difference Result 218 states and 233 transitions. [2024-11-28 05:09:59,517 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 05:09:59,517 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 4 states have internal predecessors, (11), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 13 [2024-11-28 05:09:59,517 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 05:09:59,519 INFO L225 Difference]: With dead ends: 218 [2024-11-28 05:09:59,519 INFO L226 Difference]: Without dead ends: 210 [2024-11-28 05:09:59,519 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 05:09:59,520 INFO L435 NwaCegarLoop]: 173 mSDtfsCounter, 51 mSDsluCounter, 211 mSDsCounter, 0 mSdLazyCounter, 209 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 52 SdHoareTripleChecker+Valid, 384 SdHoareTripleChecker+Invalid, 217 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 209 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-28 05:09:59,520 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [52 Valid, 384 Invalid, 217 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 209 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-28 05:09:59,523 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 210 states. [2024-11-28 05:09:59,530 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 210 to 200. [2024-11-28 05:09:59,532 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 200 states, 110 states have (on average 1.7818181818181817) internal successors, (196), 185 states have internal predecessors, (196), 8 states have call successors, (8), 6 states have call predecessors, (8), 6 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2024-11-28 05:09:59,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 200 states to 200 states and 212 transitions. [2024-11-28 05:09:59,534 INFO L78 Accepts]: Start accepts. Automaton has 200 states and 212 transitions. Word has length 13 [2024-11-28 05:09:59,534 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 05:09:59,534 INFO L471 AbstractCegarLoop]: Abstraction has 200 states and 212 transitions. [2024-11-28 05:09:59,534 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 4 states have internal predecessors, (11), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-28 05:09:59,534 INFO L276 IsEmpty]: Start isEmpty. Operand 200 states and 212 transitions. [2024-11-28 05:09:59,535 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2024-11-28 05:09:59,535 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 05:09:59,535 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 05:09:59,548 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12537f27-287e-433a-b2d7-4c2e02ee148c/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-28 05:09:59,735 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12537f27-287e-433a-b2d7-4c2e02ee148c/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:09:59,736 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [free_reportsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 77 more)] === [2024-11-28 05:09:59,736 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:09:59,736 INFO L85 PathProgramCache]: Analyzing trace with hash -699731758, now seen corresponding path program 1 times [2024-11-28 05:09:59,737 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 05:09:59,737 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [256661114] [2024-11-28 05:09:59,737 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:09:59,737 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:09:59,737 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12537f27-287e-433a-b2d7-4c2e02ee148c/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 05:09:59,739 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12537f27-287e-433a-b2d7-4c2e02ee148c/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 05:09:59,741 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12537f27-287e-433a-b2d7-4c2e02ee148c/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-28 05:09:59,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:09:59,877 INFO L256 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-28 05:09:59,879 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 05:10:00,141 INFO L349 Elim1Store]: treesize reduction 24, result has 33.3 percent of original size [2024-11-28 05:10:00,141 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 05:10:00,220 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 05:10:00,220 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 05:10:00,221 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 05:10:00,221 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [256661114] [2024-11-28 05:10:00,221 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [256661114] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 05:10:00,221 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 05:10:00,221 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-28 05:10:00,222 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1211139174] [2024-11-28 05:10:00,222 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 05:10:00,222 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-28 05:10:00,222 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 05:10:00,223 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-28 05:10:00,223 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-11-28 05:10:00,223 INFO L87 Difference]: Start difference. First operand 200 states and 212 transitions. Second operand has 7 states, 6 states have (on average 2.0) internal successors, (12), 6 states have internal predecessors, (12), 1 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-28 05:10:02,043 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 05:10:02,043 INFO L93 Difference]: Finished difference Result 251 states and 266 transitions. [2024-11-28 05:10:02,044 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-28 05:10:02,045 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 2.0) internal successors, (12), 6 states have internal predecessors, (12), 1 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 16 [2024-11-28 05:10:02,045 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 05:10:02,046 INFO L225 Difference]: With dead ends: 251 [2024-11-28 05:10:02,046 INFO L226 Difference]: Without dead ends: 251 [2024-11-28 05:10:02,047 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2024-11-28 05:10:02,048 INFO L435 NwaCegarLoop]: 134 mSDtfsCounter, 212 mSDsluCounter, 357 mSDsCounter, 0 mSdLazyCounter, 469 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 214 SdHoareTripleChecker+Valid, 491 SdHoareTripleChecker+Invalid, 501 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 469 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2024-11-28 05:10:02,048 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [214 Valid, 491 Invalid, 501 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 469 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2024-11-28 05:10:02,049 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 251 states. [2024-11-28 05:10:02,055 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 251 to 210. [2024-11-28 05:10:02,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 210 states, 119 states have (on average 1.7647058823529411) internal successors, (210), 194 states have internal predecessors, (210), 8 states have call successors, (8), 7 states have call predecessors, (8), 8 states have return successors, (10), 8 states have call predecessors, (10), 8 states have call successors, (10) [2024-11-28 05:10:02,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 210 states to 210 states and 228 transitions. [2024-11-28 05:10:02,058 INFO L78 Accepts]: Start accepts. Automaton has 210 states and 228 transitions. Word has length 16 [2024-11-28 05:10:02,058 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 05:10:02,058 INFO L471 AbstractCegarLoop]: Abstraction has 210 states and 228 transitions. [2024-11-28 05:10:02,059 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 2.0) internal successors, (12), 6 states have internal predecessors, (12), 1 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-28 05:10:02,059 INFO L276 IsEmpty]: Start isEmpty. Operand 210 states and 228 transitions. [2024-11-28 05:10:02,059 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2024-11-28 05:10:02,059 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 05:10:02,059 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 05:10:02,071 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12537f27-287e-433a-b2d7-4c2e02ee148c/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-28 05:10:02,260 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12537f27-287e-433a-b2d7-4c2e02ee148c/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:10:02,261 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [free_reportsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 77 more)] === [2024-11-28 05:10:02,261 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:10:02,261 INFO L85 PathProgramCache]: Analyzing trace with hash -699731757, now seen corresponding path program 1 times [2024-11-28 05:10:02,262 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 05:10:02,262 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2079303262] [2024-11-28 05:10:02,263 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:10:02,263 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:10:02,263 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12537f27-287e-433a-b2d7-4c2e02ee148c/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 05:10:02,265 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12537f27-287e-433a-b2d7-4c2e02ee148c/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 05:10:02,270 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12537f27-287e-433a-b2d7-4c2e02ee148c/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-28 05:10:02,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:10:02,398 INFO L256 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-11-28 05:10:02,401 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 05:10:02,566 WARN L873 $PredicateComparison]: unable to prove that (exists ((|ldv_malloc_#res.base| (_ BitVec 32))) (and (= (store |c_old(#length)| |ldv_malloc_#res.base| (select |c_#length| |ldv_malloc_#res.base|)) |c_#length|) (= (_ bv0 1) (select |c_old(#valid)| |ldv_malloc_#res.base|)))) is different from true [2024-11-28 05:10:02,629 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 05:10:02,630 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 05:10:02,743 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 05:10:02,743 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 05:10:02,743 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 05:10:02,743 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2079303262] [2024-11-28 05:10:02,743 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2079303262] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 05:10:02,743 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 05:10:02,744 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-28 05:10:02,744 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1232169151] [2024-11-28 05:10:02,744 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 05:10:02,744 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-28 05:10:02,744 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 05:10:02,745 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-28 05:10:02,745 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=28, Unknown=1, NotChecked=10, Total=56 [2024-11-28 05:10:02,745 INFO L87 Difference]: Start difference. First operand 210 states and 228 transitions. Second operand has 8 states, 6 states have (on average 2.0) internal successors, (12), 7 states have internal predecessors, (12), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-28 05:10:04,243 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 05:10:04,244 INFO L93 Difference]: Finished difference Result 250 states and 265 transitions. [2024-11-28 05:10:04,244 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-28 05:10:04,244 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 6 states have (on average 2.0) internal successors, (12), 7 states have internal predecessors, (12), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) Word has length 16 [2024-11-28 05:10:04,245 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 05:10:04,246 INFO L225 Difference]: With dead ends: 250 [2024-11-28 05:10:04,246 INFO L226 Difference]: Without dead ends: 250 [2024-11-28 05:10:04,247 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=37, Invalid=76, Unknown=1, NotChecked=18, Total=132 [2024-11-28 05:10:04,248 INFO L435 NwaCegarLoop]: 87 mSDtfsCounter, 303 mSDsluCounter, 163 mSDsCounter, 0 mSdLazyCounter, 476 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 306 SdHoareTripleChecker+Valid, 250 SdHoareTripleChecker+Invalid, 762 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 476 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 263 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2024-11-28 05:10:04,248 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [306 Valid, 250 Invalid, 762 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 476 Invalid, 0 Unknown, 263 Unchecked, 1.3s Time] [2024-11-28 05:10:04,249 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 250 states. [2024-11-28 05:10:04,255 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 250 to 209. [2024-11-28 05:10:04,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 209 states, 119 states have (on average 1.7563025210084033) internal successors, (209), 193 states have internal predecessors, (209), 8 states have call successors, (8), 7 states have call predecessors, (8), 8 states have return successors, (10), 8 states have call predecessors, (10), 8 states have call successors, (10) [2024-11-28 05:10:04,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 209 states to 209 states and 227 transitions. [2024-11-28 05:10:04,258 INFO L78 Accepts]: Start accepts. Automaton has 209 states and 227 transitions. Word has length 16 [2024-11-28 05:10:04,258 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 05:10:04,258 INFO L471 AbstractCegarLoop]: Abstraction has 209 states and 227 transitions. [2024-11-28 05:10:04,259 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 6 states have (on average 2.0) internal successors, (12), 7 states have internal predecessors, (12), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-28 05:10:04,259 INFO L276 IsEmpty]: Start isEmpty. Operand 209 states and 227 transitions. [2024-11-28 05:10:04,259 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2024-11-28 05:10:04,259 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 05:10:04,260 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] [2024-11-28 05:10:04,273 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12537f27-287e-433a-b2d7-4c2e02ee148c/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2024-11-28 05:10:04,460 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12537f27-287e-433a-b2d7-4c2e02ee148c/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:10:04,460 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [free_reportsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 77 more)] === [2024-11-28 05:10:04,461 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:10:04,461 INFO L85 PathProgramCache]: Analyzing trace with hash -1581846621, now seen corresponding path program 1 times [2024-11-28 05:10:04,461 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 05:10:04,461 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [433802544] [2024-11-28 05:10:04,461 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:10:04,461 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:10:04,462 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12537f27-287e-433a-b2d7-4c2e02ee148c/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 05:10:04,464 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12537f27-287e-433a-b2d7-4c2e02ee148c/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 05:10:04,466 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12537f27-287e-433a-b2d7-4c2e02ee148c/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-28 05:10:04,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:10:04,618 INFO L256 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-28 05:10:04,620 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 05:10:04,628 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 05:10:04,689 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 05:10:04,689 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 05:10:04,690 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 05:10:04,690 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [433802544] [2024-11-28 05:10:04,690 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [433802544] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 05:10:04,690 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 05:10:04,690 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-28 05:10:04,691 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [803520934] [2024-11-28 05:10:04,691 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 05:10:04,691 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-28 05:10:04,691 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 05:10:04,692 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-28 05:10:04,692 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-28 05:10:04,693 INFO L87 Difference]: Start difference. First operand 209 states and 227 transitions. Second operand has 6 states, 5 states have (on average 3.8) internal successors, (19), 5 states have internal predecessors, (19), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2024-11-28 05:10:05,678 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 05:10:05,678 INFO L93 Difference]: Finished difference Result 267 states and 294 transitions. [2024-11-28 05:10:05,679 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-28 05:10:05,679 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.8) internal successors, (19), 5 states have internal predecessors, (19), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 25 [2024-11-28 05:10:05,679 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 05:10:05,681 INFO L225 Difference]: With dead ends: 267 [2024-11-28 05:10:05,681 INFO L226 Difference]: Without dead ends: 267 [2024-11-28 05:10:05,681 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-28 05:10:05,682 INFO L435 NwaCegarLoop]: 172 mSDtfsCounter, 69 mSDsluCounter, 469 mSDsCounter, 0 mSdLazyCounter, 386 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 69 SdHoareTripleChecker+Valid, 641 SdHoareTripleChecker+Invalid, 388 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 386 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-11-28 05:10:05,683 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [69 Valid, 641 Invalid, 388 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 386 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-11-28 05:10:05,684 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 267 states. [2024-11-28 05:10:05,690 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 267 to 239. [2024-11-28 05:10:05,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 239 states, 151 states have (on average 1.7748344370860927) internal successors, (268), 223 states have internal predecessors, (268), 8 states have call successors, (8), 7 states have call predecessors, (8), 8 states have return successors, (10), 8 states have call predecessors, (10), 8 states have call successors, (10) [2024-11-28 05:10:05,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 239 states to 239 states and 286 transitions. [2024-11-28 05:10:05,694 INFO L78 Accepts]: Start accepts. Automaton has 239 states and 286 transitions. Word has length 25 [2024-11-28 05:10:05,694 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 05:10:05,694 INFO L471 AbstractCegarLoop]: Abstraction has 239 states and 286 transitions. [2024-11-28 05:10:05,694 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 3.8) internal successors, (19), 5 states have internal predecessors, (19), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2024-11-28 05:10:05,695 INFO L276 IsEmpty]: Start isEmpty. Operand 239 states and 286 transitions. [2024-11-28 05:10:05,695 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2024-11-28 05:10:05,695 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 05:10:05,696 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] [2024-11-28 05:10:05,709 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12537f27-287e-433a-b2d7-4c2e02ee148c/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-11-28 05:10:05,896 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12537f27-287e-433a-b2d7-4c2e02ee148c/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:10:05,897 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [free_reportsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 77 more)] === [2024-11-28 05:10:05,897 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:10:05,898 INFO L85 PathProgramCache]: Analyzing trace with hash -1581846620, now seen corresponding path program 1 times [2024-11-28 05:10:05,898 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 05:10:05,898 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1699698539] [2024-11-28 05:10:05,898 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:10:05,898 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:10:05,899 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12537f27-287e-433a-b2d7-4c2e02ee148c/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 05:10:05,901 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12537f27-287e-433a-b2d7-4c2e02ee148c/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 05:10:05,906 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12537f27-287e-433a-b2d7-4c2e02ee148c/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-28 05:10:06,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:10:06,063 INFO L256 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-28 05:10:06,065 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 05:10:06,075 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 05:10:06,186 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 05:10:06,186 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 05:10:06,186 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 05:10:06,187 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1699698539] [2024-11-28 05:10:06,187 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1699698539] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 05:10:06,187 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 05:10:06,187 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-28 05:10:06,187 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2506128] [2024-11-28 05:10:06,187 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 05:10:06,187 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-28 05:10:06,188 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 05:10:06,188 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-28 05:10:06,188 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-28 05:10:06,189 INFO L87 Difference]: Start difference. First operand 239 states and 286 transitions. Second operand has 6 states, 5 states have (on average 3.8) internal successors, (19), 5 states have internal predecessors, (19), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2024-11-28 05:10:07,290 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 05:10:07,290 INFO L93 Difference]: Finished difference Result 265 states and 292 transitions. [2024-11-28 05:10:07,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-28 05:10:07,291 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.8) internal successors, (19), 5 states have internal predecessors, (19), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 25 [2024-11-28 05:10:07,292 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 05:10:07,293 INFO L225 Difference]: With dead ends: 265 [2024-11-28 05:10:07,293 INFO L226 Difference]: Without dead ends: 265 [2024-11-28 05:10:07,294 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-28 05:10:07,295 INFO L435 NwaCegarLoop]: 171 mSDtfsCounter, 66 mSDsluCounter, 505 mSDsCounter, 0 mSdLazyCounter, 341 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 67 SdHoareTripleChecker+Valid, 676 SdHoareTripleChecker+Invalid, 344 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 341 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-11-28 05:10:07,299 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [67 Valid, 676 Invalid, 344 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 341 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-11-28 05:10:07,300 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 265 states. [2024-11-28 05:10:07,306 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 265 to 240. [2024-11-28 05:10:07,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 240 states, 153 states have (on average 1.7581699346405228) internal successors, (269), 223 states have internal predecessors, (269), 9 states have call successors, (9), 7 states have call predecessors, (9), 8 states have return successors, (12), 9 states have call predecessors, (12), 9 states have call successors, (12) [2024-11-28 05:10:07,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 240 states to 240 states and 290 transitions. [2024-11-28 05:10:07,314 INFO L78 Accepts]: Start accepts. Automaton has 240 states and 290 transitions. Word has length 25 [2024-11-28 05:10:07,314 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 05:10:07,314 INFO L471 AbstractCegarLoop]: Abstraction has 240 states and 290 transitions. [2024-11-28 05:10:07,315 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 3.8) internal successors, (19), 5 states have internal predecessors, (19), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2024-11-28 05:10:07,315 INFO L276 IsEmpty]: Start isEmpty. Operand 240 states and 290 transitions. [2024-11-28 05:10:07,315 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2024-11-28 05:10:07,315 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 05:10:07,315 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] [2024-11-28 05:10:07,333 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12537f27-287e-433a-b2d7-4c2e02ee148c/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2024-11-28 05:10:07,516 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12537f27-287e-433a-b2d7-4c2e02ee148c/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:10:07,516 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr40ASSERT_VIOLATIONMEMORY_FREE === [free_reportsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 77 more)] === [2024-11-28 05:10:07,517 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:10:07,517 INFO L85 PathProgramCache]: Analyzing trace with hash 263894957, now seen corresponding path program 1 times [2024-11-28 05:10:07,517 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 05:10:07,517 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [398512071] [2024-11-28 05:10:07,517 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:10:07,517 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:10:07,518 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12537f27-287e-433a-b2d7-4c2e02ee148c/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 05:10:07,522 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12537f27-287e-433a-b2d7-4c2e02ee148c/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 05:10:07,524 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12537f27-287e-433a-b2d7-4c2e02ee148c/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-28 05:10:07,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:10:07,685 INFO L256 TraceCheckSpWp]: Trace formula consists of 153 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-28 05:10:07,687 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 05:10:07,749 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 05:10:07,749 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 05:10:07,749 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 05:10:07,749 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [398512071] [2024-11-28 05:10:07,750 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [398512071] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 05:10:07,750 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 05:10:07,750 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-28 05:10:07,750 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1959131148] [2024-11-28 05:10:07,750 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 05:10:07,750 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-28 05:10:07,750 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 05:10:07,751 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-28 05:10:07,751 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-28 05:10:07,751 INFO L87 Difference]: Start difference. First operand 240 states and 290 transitions. Second operand has 5 states, 4 states have (on average 5.25) internal successors, (21), 4 states have internal predecessors, (21), 2 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-28 05:10:07,792 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 05:10:07,792 INFO L93 Difference]: Finished difference Result 240 states and 290 transitions. [2024-11-28 05:10:07,793 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 05:10:07,793 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 5.25) internal successors, (21), 4 states have internal predecessors, (21), 2 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 27 [2024-11-28 05:10:07,794 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 05:10:07,795 INFO L225 Difference]: With dead ends: 240 [2024-11-28 05:10:07,795 INFO L226 Difference]: Without dead ends: 240 [2024-11-28 05:10:07,796 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-28 05:10:07,796 INFO L435 NwaCegarLoop]: 201 mSDtfsCounter, 92 mSDsluCounter, 494 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 95 SdHoareTripleChecker+Valid, 695 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 05:10:07,797 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [95 Valid, 695 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 05:10:07,798 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 240 states. [2024-11-28 05:10:07,804 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 240 to 239. [2024-11-28 05:10:07,805 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 239 states, 153 states have (on average 1.7516339869281046) internal successors, (268), 222 states have internal predecessors, (268), 9 states have call successors, (9), 7 states have call predecessors, (9), 8 states have return successors, (12), 9 states have call predecessors, (12), 9 states have call successors, (12) [2024-11-28 05:10:07,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 239 states to 239 states and 289 transitions. [2024-11-28 05:10:07,807 INFO L78 Accepts]: Start accepts. Automaton has 239 states and 289 transitions. Word has length 27 [2024-11-28 05:10:07,807 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 05:10:07,808 INFO L471 AbstractCegarLoop]: Abstraction has 239 states and 289 transitions. [2024-11-28 05:10:07,808 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 5.25) internal successors, (21), 4 states have internal predecessors, (21), 2 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-28 05:10:07,808 INFO L276 IsEmpty]: Start isEmpty. Operand 239 states and 289 transitions. [2024-11-28 05:10:07,809 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2024-11-28 05:10:07,809 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 05:10:07,809 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] [2024-11-28 05:10:07,821 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12537f27-287e-433a-b2d7-4c2e02ee148c/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-11-28 05:10:08,013 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12537f27-287e-433a-b2d7-4c2e02ee148c/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:10:08,013 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr41ASSERT_VIOLATIONMEMORY_FREE === [free_reportsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 77 more)] === [2024-11-28 05:10:08,014 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:10:08,014 INFO L85 PathProgramCache]: Analyzing trace with hash -409190648, now seen corresponding path program 1 times [2024-11-28 05:10:08,014 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 05:10:08,015 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1271903581] [2024-11-28 05:10:08,015 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:10:08,015 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:10:08,015 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12537f27-287e-433a-b2d7-4c2e02ee148c/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 05:10:08,018 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12537f27-287e-433a-b2d7-4c2e02ee148c/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 05:10:08,024 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12537f27-287e-433a-b2d7-4c2e02ee148c/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-11-28 05:10:08,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:10:08,195 INFO L256 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-28 05:10:08,197 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 05:10:08,257 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 05:10:08,258 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 05:10:08,258 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 05:10:08,258 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1271903581] [2024-11-28 05:10:08,258 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1271903581] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 05:10:08,258 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 05:10:08,258 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-28 05:10:08,258 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [113408464] [2024-11-28 05:10:08,258 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 05:10:08,259 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-28 05:10:08,259 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 05:10:08,259 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-28 05:10:08,259 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-28 05:10:08,259 INFO L87 Difference]: Start difference. First operand 239 states and 289 transitions. Second operand has 6 states, 6 states have (on average 3.6666666666666665) internal successors, (22), 5 states have internal predecessors, (22), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2024-11-28 05:10:08,418 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 05:10:08,419 INFO L93 Difference]: Finished difference Result 239 states and 288 transitions. [2024-11-28 05:10:08,419 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-28 05:10:08,419 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.6666666666666665) internal successors, (22), 5 states have internal predecessors, (22), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 28 [2024-11-28 05:10:08,420 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 05:10:08,421 INFO L225 Difference]: With dead ends: 239 [2024-11-28 05:10:08,421 INFO L226 Difference]: Without dead ends: 239 [2024-11-28 05:10:08,421 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-28 05:10:08,422 INFO L435 NwaCegarLoop]: 190 mSDtfsCounter, 85 mSDsluCounter, 671 mSDsCounter, 0 mSdLazyCounter, 66 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 88 SdHoareTripleChecker+Valid, 861 SdHoareTripleChecker+Invalid, 66 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 66 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 05:10:08,422 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [88 Valid, 861 Invalid, 66 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 66 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 05:10:08,424 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 239 states. [2024-11-28 05:10:08,430 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 239 to 239. [2024-11-28 05:10:08,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 239 states, 153 states have (on average 1.7450980392156863) internal successors, (267), 222 states have internal predecessors, (267), 9 states have call successors, (9), 7 states have call predecessors, (9), 8 states have return successors, (12), 9 states have call predecessors, (12), 9 states have call successors, (12) [2024-11-28 05:10:08,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 239 states to 239 states and 288 transitions. [2024-11-28 05:10:08,433 INFO L78 Accepts]: Start accepts. Automaton has 239 states and 288 transitions. Word has length 28 [2024-11-28 05:10:08,434 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 05:10:08,434 INFO L471 AbstractCegarLoop]: Abstraction has 239 states and 288 transitions. [2024-11-28 05:10:08,434 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.6666666666666665) internal successors, (22), 5 states have internal predecessors, (22), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2024-11-28 05:10:08,435 INFO L276 IsEmpty]: Start isEmpty. Operand 239 states and 288 transitions. [2024-11-28 05:10:08,436 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2024-11-28 05:10:08,437 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 05:10:08,438 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] [2024-11-28 05:10:08,450 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12537f27-287e-433a-b2d7-4c2e02ee148c/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2024-11-28 05:10:08,638 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12537f27-287e-433a-b2d7-4c2e02ee148c/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:10:08,639 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [free_reportsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 77 more)] === [2024-11-28 05:10:08,639 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:10:08,639 INFO L85 PathProgramCache]: Analyzing trace with hash -1684906322, now seen corresponding path program 1 times [2024-11-28 05:10:08,640 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 05:10:08,640 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1057692967] [2024-11-28 05:10:08,640 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:10:08,640 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:10:08,640 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12537f27-287e-433a-b2d7-4c2e02ee148c/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 05:10:08,646 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12537f27-287e-433a-b2d7-4c2e02ee148c/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 05:10:08,648 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12537f27-287e-433a-b2d7-4c2e02ee148c/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-11-28 05:10:08,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:10:08,845 INFO L256 TraceCheckSpWp]: Trace formula consists of 192 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-28 05:10:08,848 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 05:10:08,858 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 05:10:08,895 WARN L873 $PredicateComparison]: unable to prove that (exists ((|ldv_zalloc_#t~malloc13#1.base| (_ BitVec 32))) (= (store |c_old(#valid)| |ldv_zalloc_#t~malloc13#1.base| (_ bv1 1)) |c_#valid|)) is different from true [2024-11-28 05:10:08,928 INFO L349 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2024-11-28 05:10:08,929 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 20 [2024-11-28 05:10:08,989 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 05:10:08,989 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 05:10:08,989 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 05:10:08,990 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1057692967] [2024-11-28 05:10:08,990 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1057692967] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 05:10:08,990 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 05:10:08,990 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-28 05:10:08,990 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [536079546] [2024-11-28 05:10:08,990 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 05:10:08,990 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-28 05:10:08,990 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 05:10:08,991 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-28 05:10:08,991 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=14, Unknown=1, NotChecked=6, Total=30 [2024-11-28 05:10:08,991 INFO L87 Difference]: Start difference. First operand 239 states and 288 transitions. Second operand has 6 states, 5 states have (on average 5.4) internal successors, (27), 5 states have internal predecessors, (27), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-28 05:10:09,912 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 05:10:09,912 INFO L93 Difference]: Finished difference Result 283 states and 334 transitions. [2024-11-28 05:10:09,913 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-28 05:10:09,913 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 5.4) internal successors, (27), 5 states have internal predecessors, (27), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 33 [2024-11-28 05:10:09,914 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 05:10:09,916 INFO L225 Difference]: With dead ends: 283 [2024-11-28 05:10:09,916 INFO L226 Difference]: Without dead ends: 283 [2024-11-28 05:10:09,917 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 27 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=20, Unknown=1, NotChecked=8, Total=42 [2024-11-28 05:10:09,918 INFO L435 NwaCegarLoop]: 126 mSDtfsCounter, 129 mSDsluCounter, 249 mSDsCounter, 0 mSdLazyCounter, 330 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 130 SdHoareTripleChecker+Valid, 375 SdHoareTripleChecker+Invalid, 617 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 330 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 268 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-11-28 05:10:09,920 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [130 Valid, 375 Invalid, 617 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 330 Invalid, 0 Unknown, 268 Unchecked, 0.9s Time] [2024-11-28 05:10:09,921 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 283 states. [2024-11-28 05:10:09,933 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 283 to 253. [2024-11-28 05:10:09,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 253 states, 170 states have (on average 1.6705882352941177) internal successors, (284), 236 states have internal predecessors, (284), 9 states have call successors, (9), 7 states have call predecessors, (9), 8 states have return successors, (12), 9 states have call predecessors, (12), 9 states have call successors, (12) [2024-11-28 05:10:09,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 253 states to 253 states and 305 transitions. [2024-11-28 05:10:09,938 INFO L78 Accepts]: Start accepts. Automaton has 253 states and 305 transitions. Word has length 33 [2024-11-28 05:10:09,940 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 05:10:09,941 INFO L471 AbstractCegarLoop]: Abstraction has 253 states and 305 transitions. [2024-11-28 05:10:09,941 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 5.4) internal successors, (27), 5 states have internal predecessors, (27), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-28 05:10:09,941 INFO L276 IsEmpty]: Start isEmpty. Operand 253 states and 305 transitions. [2024-11-28 05:10:09,942 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2024-11-28 05:10:09,942 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 05:10:09,942 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] [2024-11-28 05:10:09,959 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12537f27-287e-433a-b2d7-4c2e02ee148c/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2024-11-28 05:10:10,146 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12537f27-287e-433a-b2d7-4c2e02ee148c/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:10:10,146 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [free_reportsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 77 more)] === [2024-11-28 05:10:10,147 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:10:10,147 INFO L85 PathProgramCache]: Analyzing trace with hash -1684906321, now seen corresponding path program 1 times [2024-11-28 05:10:10,148 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 05:10:10,148 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1845616198] [2024-11-28 05:10:10,148 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:10:10,148 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:10:10,148 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12537f27-287e-433a-b2d7-4c2e02ee148c/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 05:10:10,152 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12537f27-287e-433a-b2d7-4c2e02ee148c/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 05:10:10,156 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12537f27-287e-433a-b2d7-4c2e02ee148c/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-11-28 05:10:10,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:10:10,362 INFO L256 TraceCheckSpWp]: Trace formula consists of 192 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-28 05:10:10,365 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 05:10:10,379 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 05:10:10,423 WARN L873 $PredicateComparison]: unable to prove that (exists ((|ldv_zalloc_#t~malloc13#1.base| (_ BitVec 32))) (= (store |c_old(#length)| |ldv_zalloc_#t~malloc13#1.base| |c_ldv_zalloc_#in~size#1|) |c_#length|)) is different from true [2024-11-28 05:10:10,494 INFO L349 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2024-11-28 05:10:10,495 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 05:10:10,867 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 05:10:10,867 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 05:10:10,867 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 05:10:10,868 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1845616198] [2024-11-28 05:10:10,868 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1845616198] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 05:10:10,868 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 05:10:10,868 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-28 05:10:10,868 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [975402298] [2024-11-28 05:10:10,868 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 05:10:10,868 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-28 05:10:10,868 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 05:10:10,869 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-28 05:10:10,869 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=22, Unknown=1, NotChecked=8, Total=42 [2024-11-28 05:10:10,869 INFO L87 Difference]: Start difference. First operand 253 states and 305 transitions. Second operand has 7 states, 5 states have (on average 5.4) internal successors, (27), 6 states have internal predecessors, (27), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-28 05:10:12,628 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 05:10:12,628 INFO L93 Difference]: Finished difference Result 276 states and 309 transitions. [2024-11-28 05:10:12,630 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-28 05:10:12,630 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 5 states have (on average 5.4) internal successors, (27), 6 states have internal predecessors, (27), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 33 [2024-11-28 05:10:12,630 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 05:10:12,632 INFO L225 Difference]: With dead ends: 276 [2024-11-28 05:10:12,632 INFO L226 Difference]: Without dead ends: 276 [2024-11-28 05:10:12,633 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=30, Unknown=1, NotChecked=10, Total=56 [2024-11-28 05:10:12,633 INFO L435 NwaCegarLoop]: 111 mSDtfsCounter, 125 mSDsluCounter, 338 mSDsCounter, 0 mSdLazyCounter, 462 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 127 SdHoareTripleChecker+Valid, 449 SdHoareTripleChecker+Invalid, 757 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 462 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 285 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2024-11-28 05:10:12,634 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [127 Valid, 449 Invalid, 757 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 462 Invalid, 0 Unknown, 285 Unchecked, 1.7s Time] [2024-11-28 05:10:12,635 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 276 states. [2024-11-28 05:10:12,642 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 276 to 253. [2024-11-28 05:10:12,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 253 states, 170 states have (on average 1.6529411764705881) internal successors, (281), 236 states have internal predecessors, (281), 9 states have call successors, (9), 7 states have call predecessors, (9), 8 states have return successors, (12), 9 states have call predecessors, (12), 9 states have call successors, (12) [2024-11-28 05:10:12,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 253 states to 253 states and 302 transitions. [2024-11-28 05:10:12,645 INFO L78 Accepts]: Start accepts. Automaton has 253 states and 302 transitions. Word has length 33 [2024-11-28 05:10:12,645 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 05:10:12,645 INFO L471 AbstractCegarLoop]: Abstraction has 253 states and 302 transitions. [2024-11-28 05:10:12,645 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 5 states have (on average 5.4) internal successors, (27), 6 states have internal predecessors, (27), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-28 05:10:12,646 INFO L276 IsEmpty]: Start isEmpty. Operand 253 states and 302 transitions. [2024-11-28 05:10:12,646 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2024-11-28 05:10:12,647 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 05:10:12,647 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] [2024-11-28 05:10:12,660 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12537f27-287e-433a-b2d7-4c2e02ee148c/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2024-11-28 05:10:12,847 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12537f27-287e-433a-b2d7-4c2e02ee148c/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:10:12,848 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr16REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [free_reportsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 77 more)] === [2024-11-28 05:10:12,848 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:10:12,848 INFO L85 PathProgramCache]: Analyzing trace with hash 237326360, now seen corresponding path program 1 times [2024-11-28 05:10:12,848 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 05:10:12,849 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1344160826] [2024-11-28 05:10:12,849 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:10:12,849 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:10:12,849 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12537f27-287e-433a-b2d7-4c2e02ee148c/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 05:10:12,852 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12537f27-287e-433a-b2d7-4c2e02ee148c/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 05:10:12,858 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12537f27-287e-433a-b2d7-4c2e02ee148c/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-11-28 05:10:13,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:10:13,053 INFO L256 TraceCheckSpWp]: Trace formula consists of 200 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-28 05:10:13,055 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 05:10:13,081 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 05:10:13,081 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 05:10:13,081 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 05:10:13,081 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1344160826] [2024-11-28 05:10:13,082 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1344160826] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 05:10:13,082 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 05:10:13,082 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-28 05:10:13,082 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1903767301] [2024-11-28 05:10:13,082 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 05:10:13,082 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 05:10:13,083 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 05:10:13,083 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 05:10:13,083 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 05:10:13,084 INFO L87 Difference]: Start difference. First operand 253 states and 302 transitions. Second operand has 4 states, 4 states have (on average 7.5) internal successors, (30), 4 states have internal predecessors, (30), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2024-11-28 05:10:13,115 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 05:10:13,116 INFO L93 Difference]: Finished difference Result 259 states and 308 transitions. [2024-11-28 05:10:13,116 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 05:10:13,117 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.5) internal successors, (30), 4 states have internal predecessors, (30), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 36 [2024-11-28 05:10:13,117 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 05:10:13,118 INFO L225 Difference]: With dead ends: 259 [2024-11-28 05:10:13,118 INFO L226 Difference]: Without dead ends: 259 [2024-11-28 05:10:13,120 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 05:10:13,121 INFO L435 NwaCegarLoop]: 199 mSDtfsCounter, 0 mSDsluCounter, 392 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 591 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 05:10:13,121 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 591 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 05:10:13,122 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 259 states. [2024-11-28 05:10:13,134 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 259 to 257. [2024-11-28 05:10:13,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 257 states, 174 states have (on average 1.6379310344827587) internal successors, (285), 240 states have internal predecessors, (285), 9 states have call successors, (9), 7 states have call predecessors, (9), 8 states have return successors, (12), 9 states have call predecessors, (12), 9 states have call successors, (12) [2024-11-28 05:10:13,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 257 states to 257 states and 306 transitions. [2024-11-28 05:10:13,137 INFO L78 Accepts]: Start accepts. Automaton has 257 states and 306 transitions. Word has length 36 [2024-11-28 05:10:13,137 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 05:10:13,137 INFO L471 AbstractCegarLoop]: Abstraction has 257 states and 306 transitions. [2024-11-28 05:10:13,137 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.5) internal successors, (30), 4 states have internal predecessors, (30), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2024-11-28 05:10:13,138 INFO L276 IsEmpty]: Start isEmpty. Operand 257 states and 306 transitions. [2024-11-28 05:10:13,173 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2024-11-28 05:10:13,174 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 05:10:13,174 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] [2024-11-28 05:10:13,188 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12537f27-287e-433a-b2d7-4c2e02ee148c/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2024-11-28 05:10:13,374 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12537f27-287e-433a-b2d7-4c2e02ee148c/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:10:13,375 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr33ASSERT_VIOLATIONMEMORY_FREE === [free_reportsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 77 more)] === [2024-11-28 05:10:13,375 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:10:13,375 INFO L85 PathProgramCache]: Analyzing trace with hash 237330455, now seen corresponding path program 1 times [2024-11-28 05:10:13,376 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 05:10:13,376 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [967930913] [2024-11-28 05:10:13,376 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:10:13,376 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:10:13,376 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12537f27-287e-433a-b2d7-4c2e02ee148c/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 05:10:13,381 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12537f27-287e-433a-b2d7-4c2e02ee148c/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 05:10:13,382 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12537f27-287e-433a-b2d7-4c2e02ee148c/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2024-11-28 05:10:13,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:10:13,593 INFO L256 TraceCheckSpWp]: Trace formula consists of 196 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-28 05:10:13,595 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 05:10:13,704 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 05:10:13,704 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 05:10:13,704 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 05:10:13,705 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [967930913] [2024-11-28 05:10:13,705 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [967930913] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 05:10:13,705 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 05:10:13,705 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-28 05:10:13,705 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [162069905] [2024-11-28 05:10:13,705 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 05:10:13,706 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-28 05:10:13,706 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 05:10:13,706 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-28 05:10:13,707 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-28 05:10:13,707 INFO L87 Difference]: Start difference. First operand 257 states and 306 transitions. Second operand has 6 states, 5 states have (on average 6.0) internal successors, (30), 5 states have internal predecessors, (30), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2024-11-28 05:10:14,007 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 05:10:14,008 INFO L93 Difference]: Finished difference Result 255 states and 303 transitions. [2024-11-28 05:10:14,008 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-28 05:10:14,009 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 6.0) internal successors, (30), 5 states have internal predecessors, (30), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 36 [2024-11-28 05:10:14,009 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 05:10:14,011 INFO L225 Difference]: With dead ends: 255 [2024-11-28 05:10:14,011 INFO L226 Difference]: Without dead ends: 255 [2024-11-28 05:10:14,011 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-28 05:10:14,012 INFO L435 NwaCegarLoop]: 186 mSDtfsCounter, 70 mSDsluCounter, 601 mSDsCounter, 0 mSdLazyCounter, 118 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 73 SdHoareTripleChecker+Valid, 787 SdHoareTripleChecker+Invalid, 119 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 118 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-28 05:10:14,012 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [73 Valid, 787 Invalid, 119 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 118 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-28 05:10:14,013 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 255 states. [2024-11-28 05:10:14,019 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 255 to 255. [2024-11-28 05:10:14,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 255 states, 174 states have (on average 1.6206896551724137) internal successors, (282), 238 states have internal predecessors, (282), 9 states have call successors, (9), 7 states have call predecessors, (9), 8 states have return successors, (12), 9 states have call predecessors, (12), 9 states have call successors, (12) [2024-11-28 05:10:14,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 255 states to 255 states and 303 transitions. [2024-11-28 05:10:14,022 INFO L78 Accepts]: Start accepts. Automaton has 255 states and 303 transitions. Word has length 36 [2024-11-28 05:10:14,023 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 05:10:14,023 INFO L471 AbstractCegarLoop]: Abstraction has 255 states and 303 transitions. [2024-11-28 05:10:14,023 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 6.0) internal successors, (30), 5 states have internal predecessors, (30), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2024-11-28 05:10:14,023 INFO L276 IsEmpty]: Start isEmpty. Operand 255 states and 303 transitions. [2024-11-28 05:10:14,024 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2024-11-28 05:10:14,024 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 05:10:14,024 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] [2024-11-28 05:10:14,037 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12537f27-287e-433a-b2d7-4c2e02ee148c/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2024-11-28 05:10:14,224 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12537f27-287e-433a-b2d7-4c2e02ee148c/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:10:14,225 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [free_reportsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 77 more)] === [2024-11-28 05:10:14,225 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:10:14,226 INFO L85 PathProgramCache]: Analyzing trace with hash -1191785167, now seen corresponding path program 1 times [2024-11-28 05:10:14,226 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 05:10:14,226 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1741002890] [2024-11-28 05:10:14,226 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:10:14,226 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:10:14,226 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12537f27-287e-433a-b2d7-4c2e02ee148c/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 05:10:14,229 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12537f27-287e-433a-b2d7-4c2e02ee148c/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 05:10:14,233 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12537f27-287e-433a-b2d7-4c2e02ee148c/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2024-11-28 05:10:14,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:10:14,466 INFO L256 TraceCheckSpWp]: Trace formula consists of 238 conjuncts, 17 conjuncts are in the unsatisfiable core [2024-11-28 05:10:14,469 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 05:10:14,485 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 05:10:14,494 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 05:10:14,559 WARN L873 $PredicateComparison]: unable to prove that (exists ((|ldv_zalloc_#t~malloc13#1.base| (_ BitVec 32))) (and (= (_ bv0 1) (select |c_old(#valid)| |ldv_zalloc_#t~malloc13#1.base|)) (= |c_#length| (store |c_old(#length)| |ldv_zalloc_#t~malloc13#1.base| (select |c_#length| |ldv_zalloc_#t~malloc13#1.base|))))) is different from true [2024-11-28 05:10:14,613 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 05:10:14,615 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 05:10:14,632 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2024-11-28 05:10:14,633 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 05:10:14,795 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 05:10:14,795 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 05:10:14,795 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 05:10:14,795 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1741002890] [2024-11-28 05:10:14,796 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1741002890] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 05:10:14,796 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 05:10:14,796 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-28 05:10:14,796 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1111185642] [2024-11-28 05:10:14,797 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 05:10:14,798 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-28 05:10:14,798 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 05:10:14,799 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-28 05:10:14,799 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=21, Unknown=1, NotChecked=8, Total=42 [2024-11-28 05:10:14,799 INFO L87 Difference]: Start difference. First operand 255 states and 303 transitions. Second operand has 7 states, 5 states have (on average 6.2) internal successors, (31), 6 states have internal predecessors, (31), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-28 05:10:16,155 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 05:10:16,156 INFO L93 Difference]: Finished difference Result 302 states and 338 transitions. [2024-11-28 05:10:16,157 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-28 05:10:16,157 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 5 states have (on average 6.2) internal successors, (31), 6 states have internal predecessors, (31), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 37 [2024-11-28 05:10:16,158 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 05:10:16,160 INFO L225 Difference]: With dead ends: 302 [2024-11-28 05:10:16,160 INFO L226 Difference]: Without dead ends: 302 [2024-11-28 05:10:16,160 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=37, Unknown=1, NotChecked=12, Total=72 [2024-11-28 05:10:16,161 INFO L435 NwaCegarLoop]: 119 mSDtfsCounter, 168 mSDsluCounter, 256 mSDsCounter, 0 mSdLazyCounter, 421 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 169 SdHoareTripleChecker+Valid, 375 SdHoareTripleChecker+Invalid, 751 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 421 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 315 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2024-11-28 05:10:16,162 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [169 Valid, 375 Invalid, 751 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 421 Invalid, 0 Unknown, 315 Unchecked, 1.3s Time] [2024-11-28 05:10:16,163 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 302 states. [2024-11-28 05:10:16,169 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 302 to 255. [2024-11-28 05:10:16,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 255 states, 174 states have (on average 1.6091954022988506) internal successors, (280), 238 states have internal predecessors, (280), 9 states have call successors, (9), 7 states have call predecessors, (9), 8 states have return successors, (12), 9 states have call predecessors, (12), 9 states have call successors, (12) [2024-11-28 05:10:16,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 255 states to 255 states and 301 transitions. [2024-11-28 05:10:16,172 INFO L78 Accepts]: Start accepts. Automaton has 255 states and 301 transitions. Word has length 37 [2024-11-28 05:10:16,172 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 05:10:16,172 INFO L471 AbstractCegarLoop]: Abstraction has 255 states and 301 transitions. [2024-11-28 05:10:16,173 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 5 states have (on average 6.2) internal successors, (31), 6 states have internal predecessors, (31), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-28 05:10:16,173 INFO L276 IsEmpty]: Start isEmpty. Operand 255 states and 301 transitions. [2024-11-28 05:10:16,175 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2024-11-28 05:10:16,175 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 05:10:16,175 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] [2024-11-28 05:10:16,189 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12537f27-287e-433a-b2d7-4c2e02ee148c/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2024-11-28 05:10:16,376 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12537f27-287e-433a-b2d7-4c2e02ee148c/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:10:16,377 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr41ASSERT_VIOLATIONMEMORY_FREE === [free_reportsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 77 more)] === [2024-11-28 05:10:16,377 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:10:16,378 INFO L85 PathProgramCache]: Analyzing trace with hash 133095244, now seen corresponding path program 1 times [2024-11-28 05:10:16,378 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 05:10:16,378 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [21464381] [2024-11-28 05:10:16,378 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:10:16,378 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:10:16,379 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12537f27-287e-433a-b2d7-4c2e02ee148c/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 05:10:16,381 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12537f27-287e-433a-b2d7-4c2e02ee148c/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 05:10:16,385 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12537f27-287e-433a-b2d7-4c2e02ee148c/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2024-11-28 05:10:16,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:10:16,596 INFO L256 TraceCheckSpWp]: Trace formula consists of 205 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-28 05:10:16,597 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 05:10:16,624 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 05:10:16,625 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 05:10:16,625 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 05:10:16,625 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [21464381] [2024-11-28 05:10:16,625 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [21464381] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 05:10:16,625 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 05:10:16,626 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-28 05:10:16,626 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1698591314] [2024-11-28 05:10:16,626 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 05:10:16,626 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 05:10:16,626 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 05:10:16,627 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 05:10:16,627 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 05:10:16,627 INFO L87 Difference]: Start difference. First operand 255 states and 301 transitions. Second operand has 4 states, 4 states have (on average 8.75) internal successors, (35), 4 states have internal predecessors, (35), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2024-11-28 05:10:16,662 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 05:10:16,662 INFO L93 Difference]: Finished difference Result 257 states and 303 transitions. [2024-11-28 05:10:16,663 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 05:10:16,663 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.75) internal successors, (35), 4 states have internal predecessors, (35), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 41 [2024-11-28 05:10:16,664 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 05:10:16,665 INFO L225 Difference]: With dead ends: 257 [2024-11-28 05:10:16,665 INFO L226 Difference]: Without dead ends: 257 [2024-11-28 05:10:16,665 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 05:10:16,666 INFO L435 NwaCegarLoop]: 197 mSDtfsCounter, 0 mSDsluCounter, 387 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 584 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 05:10:16,666 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 584 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 05:10:16,669 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 257 states. [2024-11-28 05:10:16,675 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 257 to 257. [2024-11-28 05:10:16,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 257 states, 176 states have (on average 1.6022727272727273) internal successors, (282), 240 states have internal predecessors, (282), 9 states have call successors, (9), 7 states have call predecessors, (9), 8 states have return successors, (12), 9 states have call predecessors, (12), 9 states have call successors, (12) [2024-11-28 05:10:16,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 257 states to 257 states and 303 transitions. [2024-11-28 05:10:16,680 INFO L78 Accepts]: Start accepts. Automaton has 257 states and 303 transitions. Word has length 41 [2024-11-28 05:10:16,680 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 05:10:16,680 INFO L471 AbstractCegarLoop]: Abstraction has 257 states and 303 transitions. [2024-11-28 05:10:16,681 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.75) internal successors, (35), 4 states have internal predecessors, (35), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2024-11-28 05:10:16,681 INFO L276 IsEmpty]: Start isEmpty. Operand 257 states and 303 transitions. [2024-11-28 05:10:16,681 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2024-11-28 05:10:16,681 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 05:10:16,682 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] [2024-11-28 05:10:16,696 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12537f27-287e-433a-b2d7-4c2e02ee148c/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2024-11-28 05:10:16,882 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12537f27-287e-433a-b2d7-4c2e02ee148c/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:10:16,882 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr43REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [free_reportsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 77 more)] === [2024-11-28 05:10:16,883 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:10:16,883 INFO L85 PathProgramCache]: Analyzing trace with hash -168948880, now seen corresponding path program 1 times [2024-11-28 05:10:16,883 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 05:10:16,883 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1066294688] [2024-11-28 05:10:16,883 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:10:16,883 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:10:16,884 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12537f27-287e-433a-b2d7-4c2e02ee148c/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 05:10:16,886 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12537f27-287e-433a-b2d7-4c2e02ee148c/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 05:10:16,887 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12537f27-287e-433a-b2d7-4c2e02ee148c/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2024-11-28 05:10:17,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:10:17,120 INFO L256 TraceCheckSpWp]: Trace formula consists of 215 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-11-28 05:10:17,123 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 05:10:17,189 INFO L349 Elim1Store]: treesize reduction 24, result has 33.3 percent of original size [2024-11-28 05:10:17,190 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 05:10:17,217 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 5 [2024-11-28 05:10:17,335 INFO L349 Elim1Store]: treesize reduction 24, result has 33.3 percent of original size [2024-11-28 05:10:17,335 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 21 treesize of output 20 [2024-11-28 05:10:17,620 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 13 [2024-11-28 05:10:17,643 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 13 [2024-11-28 05:10:17,681 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 05:10:17,681 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 05:10:17,681 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 05:10:17,681 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1066294688] [2024-11-28 05:10:17,682 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1066294688] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 05:10:17,682 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 05:10:17,682 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-28 05:10:17,682 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1443843557] [2024-11-28 05:10:17,682 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 05:10:17,682 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-28 05:10:17,682 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 05:10:17,683 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-28 05:10:17,683 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-11-28 05:10:17,683 INFO L87 Difference]: Start difference. First operand 257 states and 303 transitions. Second operand has 11 states, 9 states have (on average 4.0) internal successors, (36), 9 states have internal predecessors, (36), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-28 05:10:19,696 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 05:10:19,696 INFO L93 Difference]: Finished difference Result 332 states and 383 transitions. [2024-11-28 05:10:19,697 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-28 05:10:19,697 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 9 states have (on average 4.0) internal successors, (36), 9 states have internal predecessors, (36), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 42 [2024-11-28 05:10:19,697 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 05:10:19,699 INFO L225 Difference]: With dead ends: 332 [2024-11-28 05:10:19,699 INFO L226 Difference]: Without dead ends: 332 [2024-11-28 05:10:19,699 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=44, Invalid=196, Unknown=0, NotChecked=0, Total=240 [2024-11-28 05:10:19,700 INFO L435 NwaCegarLoop]: 97 mSDtfsCounter, 307 mSDsluCounter, 600 mSDsCounter, 0 mSdLazyCounter, 927 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 309 SdHoareTripleChecker+Valid, 697 SdHoareTripleChecker+Invalid, 962 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 927 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2024-11-28 05:10:19,700 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [309 Valid, 697 Invalid, 962 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 927 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2024-11-28 05:10:19,701 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 332 states. [2024-11-28 05:10:19,709 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 332 to 268. [2024-11-28 05:10:19,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 268 states, 187 states have (on average 1.5989304812834224) internal successors, (299), 248 states have internal predecessors, (299), 9 states have call successors, (9), 7 states have call predecessors, (9), 8 states have return successors, (12), 12 states have call predecessors, (12), 9 states have call successors, (12) [2024-11-28 05:10:19,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 268 states to 268 states and 320 transitions. [2024-11-28 05:10:19,712 INFO L78 Accepts]: Start accepts. Automaton has 268 states and 320 transitions. Word has length 42 [2024-11-28 05:10:19,713 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 05:10:19,713 INFO L471 AbstractCegarLoop]: Abstraction has 268 states and 320 transitions. [2024-11-28 05:10:19,713 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 9 states have (on average 4.0) internal successors, (36), 9 states have internal predecessors, (36), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-28 05:10:19,713 INFO L276 IsEmpty]: Start isEmpty. Operand 268 states and 320 transitions. [2024-11-28 05:10:19,714 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2024-11-28 05:10:19,714 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 05:10:19,714 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] [2024-11-28 05:10:19,727 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12537f27-287e-433a-b2d7-4c2e02ee148c/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Ended with exit code 0 [2024-11-28 05:10:19,915 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12537f27-287e-433a-b2d7-4c2e02ee148c/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:10:19,915 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr44REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [free_reportsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 77 more)] === [2024-11-28 05:10:19,916 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:10:19,916 INFO L85 PathProgramCache]: Analyzing trace with hash -168948879, now seen corresponding path program 1 times [2024-11-28 05:10:19,916 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 05:10:19,916 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2127982929] [2024-11-28 05:10:19,916 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:10:19,916 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:10:19,916 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12537f27-287e-433a-b2d7-4c2e02ee148c/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 05:10:19,918 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12537f27-287e-433a-b2d7-4c2e02ee148c/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 05:10:19,920 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12537f27-287e-433a-b2d7-4c2e02ee148c/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2024-11-28 05:10:20,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:10:20,161 INFO L256 TraceCheckSpWp]: Trace formula consists of 215 conjuncts, 30 conjuncts are in the unsatisfiable core [2024-11-28 05:10:20,166 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 05:10:20,397 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 05:10:20,399 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 05:10:20,627 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 05:10:20,628 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 05:10:28,822 INFO L349 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2024-11-28 05:10:28,823 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 05:10:29,130 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 05:10:29,130 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 05:10:29,130 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 05:10:29,130 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2127982929] [2024-11-28 05:10:29,130 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2127982929] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 05:10:29,130 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 05:10:29,130 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-28 05:10:29,131 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [709141656] [2024-11-28 05:10:29,131 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 05:10:29,131 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-28 05:10:29,131 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 05:10:29,132 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-28 05:10:29,132 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=79, Unknown=6, NotChecked=0, Total=110 [2024-11-28 05:10:29,132 INFO L87 Difference]: Start difference. First operand 268 states and 320 transitions. Second operand has 11 states, 9 states have (on average 4.0) internal successors, (36), 9 states have internal predecessors, (36), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-28 05:10:33,187 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-28 05:10:37,580 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-28 05:10:42,719 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-28 05:10:47,400 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-28 05:10:51,728 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-28 05:10:55,997 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-28 05:11:00,109 WARN L539 Checker$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 05:11:04,728 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-28 05:11:08,898 WARN L539 Checker$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 05:11:09,170 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 05:11:09,170 INFO L93 Difference]: Finished difference Result 292 states and 340 transitions. [2024-11-28 05:11:09,171 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-28 05:11:09,171 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 9 states have (on average 4.0) internal successors, (36), 9 states have internal predecessors, (36), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) Word has length 42 [2024-11-28 05:11:09,171 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 05:11:09,172 INFO L225 Difference]: With dead ends: 292 [2024-11-28 05:11:09,172 INFO L226 Difference]: Without dead ends: 292 [2024-11-28 05:11:09,173 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 31 SyntacticMatches, 1 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 51 ImplicationChecksByTransitivity, 8.7s TimeCoverageRelationStatistics Valid=85, Invalid=287, Unknown=8, NotChecked=0, Total=380 [2024-11-28 05:11:09,174 INFO L435 NwaCegarLoop]: 75 mSDtfsCounter, 426 mSDsluCounter, 339 mSDsCounter, 0 mSdLazyCounter, 770 mSolverCounterSat, 65 mSolverCounterUnsat, 118 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 39.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 428 SdHoareTripleChecker+Valid, 414 SdHoareTripleChecker+Invalid, 953 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 65 IncrementalHoareTripleChecker+Valid, 770 IncrementalHoareTripleChecker+Invalid, 118 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 39.6s IncrementalHoareTripleChecker+Time [2024-11-28 05:11:09,175 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [428 Valid, 414 Invalid, 953 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [65 Valid, 770 Invalid, 118 Unknown, 0 Unchecked, 39.6s Time] [2024-11-28 05:11:09,175 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 292 states. [2024-11-28 05:11:09,183 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 292 to 266. [2024-11-28 05:11:09,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 266 states, 187 states have (on average 1.5775401069518717) internal successors, (295), 246 states have internal predecessors, (295), 9 states have call successors, (9), 7 states have call predecessors, (9), 8 states have return successors, (12), 12 states have call predecessors, (12), 9 states have call successors, (12) [2024-11-28 05:11:09,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 266 states to 266 states and 316 transitions. [2024-11-28 05:11:09,186 INFO L78 Accepts]: Start accepts. Automaton has 266 states and 316 transitions. Word has length 42 [2024-11-28 05:11:09,187 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 05:11:09,187 INFO L471 AbstractCegarLoop]: Abstraction has 266 states and 316 transitions. [2024-11-28 05:11:09,187 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 9 states have (on average 4.0) internal successors, (36), 9 states have internal predecessors, (36), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-28 05:11:09,187 INFO L276 IsEmpty]: Start isEmpty. Operand 266 states and 316 transitions. [2024-11-28 05:11:09,188 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2024-11-28 05:11:09,188 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 05:11:09,188 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] [2024-11-28 05:11:09,201 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12537f27-287e-433a-b2d7-4c2e02ee148c/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Ended with exit code 0 [2024-11-28 05:11:09,392 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12537f27-287e-433a-b2d7-4c2e02ee148c/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:11:09,392 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr50ASSERT_VIOLATIONMEMORY_LEAK === [free_reportsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 77 more)] === [2024-11-28 05:11:09,393 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:11:09,393 INFO L85 PathProgramCache]: Analyzing trace with hash -942427866, now seen corresponding path program 1 times [2024-11-28 05:11:09,393 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 05:11:09,394 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [882078875] [2024-11-28 05:11:09,394 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:11:09,394 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:11:09,394 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12537f27-287e-433a-b2d7-4c2e02ee148c/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 05:11:09,396 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12537f27-287e-433a-b2d7-4c2e02ee148c/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 05:11:09,400 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12537f27-287e-433a-b2d7-4c2e02ee148c/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2024-11-28 05:11:09,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:11:09,610 INFO L256 TraceCheckSpWp]: Trace formula consists of 208 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-28 05:11:09,610 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 05:11:09,634 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 05:11:09,634 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 05:11:09,634 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 05:11:09,634 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [882078875] [2024-11-28 05:11:09,634 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [882078875] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 05:11:09,634 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 05:11:09,634 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-28 05:11:09,634 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1480985189] [2024-11-28 05:11:09,634 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 05:11:09,635 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 05:11:09,635 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 05:11:09,635 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 05:11:09,635 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 05:11:09,635 INFO L87 Difference]: Start difference. First operand 266 states and 316 transitions. Second operand has 4 states, 4 states have (on average 9.25) internal successors, (37), 4 states have internal predecessors, (37), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2024-11-28 05:11:09,665 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 05:11:09,665 INFO L93 Difference]: Finished difference Result 268 states and 317 transitions. [2024-11-28 05:11:09,666 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 05:11:09,666 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 9.25) internal successors, (37), 4 states have internal predecessors, (37), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 43 [2024-11-28 05:11:09,666 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 05:11:09,669 INFO L225 Difference]: With dead ends: 268 [2024-11-28 05:11:09,669 INFO L226 Difference]: Without dead ends: 268 [2024-11-28 05:11:09,669 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 05:11:09,670 INFO L435 NwaCegarLoop]: 195 mSDtfsCounter, 0 mSDsluCounter, 384 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 579 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 05:11:09,670 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 579 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 05:11:09,671 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 268 states. [2024-11-28 05:11:09,678 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 268 to 268. [2024-11-28 05:11:09,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 268 states, 189 states have (on average 1.566137566137566) internal successors, (296), 248 states have internal predecessors, (296), 9 states have call successors, (9), 7 states have call predecessors, (9), 8 states have return successors, (12), 12 states have call predecessors, (12), 9 states have call successors, (12) [2024-11-28 05:11:09,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 268 states to 268 states and 317 transitions. [2024-11-28 05:11:09,681 INFO L78 Accepts]: Start accepts. Automaton has 268 states and 317 transitions. Word has length 43 [2024-11-28 05:11:09,681 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 05:11:09,681 INFO L471 AbstractCegarLoop]: Abstraction has 268 states and 317 transitions. [2024-11-28 05:11:09,682 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.25) internal successors, (37), 4 states have internal predecessors, (37), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2024-11-28 05:11:09,682 INFO L276 IsEmpty]: Start isEmpty. Operand 268 states and 317 transitions. [2024-11-28 05:11:09,682 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2024-11-28 05:11:09,683 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 05:11:09,684 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] [2024-11-28 05:11:09,696 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12537f27-287e-433a-b2d7-4c2e02ee148c/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Ended with exit code 0 [2024-11-28 05:11:09,884 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12537f27-287e-433a-b2d7-4c2e02ee148c/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:11:09,884 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting free_reportsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [free_reportsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 77 more)] === [2024-11-28 05:11:09,885 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:11:09,885 INFO L85 PathProgramCache]: Analyzing trace with hash 545840538, now seen corresponding path program 1 times [2024-11-28 05:11:09,885 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 05:11:09,885 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1506540844] [2024-11-28 05:11:09,885 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:11:09,885 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:11:09,886 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12537f27-287e-433a-b2d7-4c2e02ee148c/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 05:11:09,887 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12537f27-287e-433a-b2d7-4c2e02ee148c/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 05:11:09,889 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12537f27-287e-433a-b2d7-4c2e02ee148c/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2024-11-28 05:11:10,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:11:10,128 INFO L256 TraceCheckSpWp]: Trace formula consists of 233 conjuncts, 39 conjuncts are in the unsatisfiable core [2024-11-28 05:11:10,133 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 05:11:10,161 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 05:11:10,394 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-28 05:11:10,542 INFO L349 Elim1Store]: treesize reduction 74, result has 29.5 percent of original size [2024-11-28 05:11:10,543 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 32 treesize of output 44 [2024-11-28 05:11:10,618 INFO L349 Elim1Store]: treesize reduction 13, result has 7.1 percent of original size [2024-11-28 05:11:10,618 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 11 [2024-11-28 05:11:10,822 INFO L349 Elim1Store]: treesize reduction 74, result has 29.5 percent of original size [2024-11-28 05:11:10,823 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 32 treesize of output 44 [2024-11-28 05:11:11,115 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 27 [2024-11-28 05:11:11,323 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 27 [2024-11-28 05:11:11,785 INFO L349 Elim1Store]: treesize reduction 13, result has 7.1 percent of original size [2024-11-28 05:11:11,786 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 5 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 32 treesize of output 29 [2024-11-28 05:11:11,823 INFO L349 Elim1Store]: treesize reduction 13, result has 7.1 percent of original size [2024-11-28 05:11:11,824 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 29 [2024-11-28 05:11:11,906 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-28 05:11:12,063 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 05:11:12,063 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 05:11:12,064 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 05:11:12,064 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1506540844] [2024-11-28 05:11:12,064 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1506540844] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 05:11:12,064 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 05:11:12,064 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2024-11-28 05:11:12,064 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1372136143] [2024-11-28 05:11:12,064 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 05:11:12,064 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-28 05:11:12,064 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 05:11:12,065 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-28 05:11:12,065 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=255, Unknown=0, NotChecked=0, Total=306 [2024-11-28 05:11:12,065 INFO L87 Difference]: Start difference. First operand 268 states and 317 transitions. Second operand has 18 states, 14 states have (on average 2.7142857142857144) internal successors, (38), 14 states have internal predecessors, (38), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-28 05:11:16,196 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 05:11:16,196 INFO L93 Difference]: Finished difference Result 422 states and 492 transitions. [2024-11-28 05:11:16,197 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2024-11-28 05:11:16,197 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 14 states have (on average 2.7142857142857144) internal successors, (38), 14 states have internal predecessors, (38), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 45 [2024-11-28 05:11:16,197 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 05:11:16,199 INFO L225 Difference]: With dead ends: 422 [2024-11-28 05:11:16,199 INFO L226 Difference]: Without dead ends: 422 [2024-11-28 05:11:16,199 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 28 SyntacticMatches, 1 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 229 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=156, Invalid=966, Unknown=0, NotChecked=0, Total=1122 [2024-11-28 05:11:16,201 INFO L435 NwaCegarLoop]: 96 mSDtfsCounter, 513 mSDsluCounter, 1003 mSDsCounter, 0 mSdLazyCounter, 1517 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 515 SdHoareTripleChecker+Valid, 1099 SdHoareTripleChecker+Invalid, 1560 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 1517 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.6s IncrementalHoareTripleChecker+Time [2024-11-28 05:11:16,201 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [515 Valid, 1099 Invalid, 1560 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 1517 Invalid, 0 Unknown, 0 Unchecked, 3.6s Time] [2024-11-28 05:11:16,202 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 422 states. [2024-11-28 05:11:16,208 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 422 to 350. [2024-11-28 05:11:16,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 350 states, 265 states have (on average 1.5773584905660378) internal successors, (418), 326 states have internal predecessors, (418), 12 states have call successors, (12), 10 states have call predecessors, (12), 11 states have return successors, (17), 13 states have call predecessors, (17), 12 states have call successors, (17) [2024-11-28 05:11:16,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 350 states to 350 states and 447 transitions. [2024-11-28 05:11:16,211 INFO L78 Accepts]: Start accepts. Automaton has 350 states and 447 transitions. Word has length 45 [2024-11-28 05:11:16,211 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 05:11:16,212 INFO L471 AbstractCegarLoop]: Abstraction has 350 states and 447 transitions. [2024-11-28 05:11:16,212 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 14 states have (on average 2.7142857142857144) internal successors, (38), 14 states have internal predecessors, (38), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-28 05:11:16,212 INFO L276 IsEmpty]: Start isEmpty. Operand 350 states and 447 transitions. [2024-11-28 05:11:16,212 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2024-11-28 05:11:16,212 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 05:11:16,213 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] [2024-11-28 05:11:16,224 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12537f27-287e-433a-b2d7-4c2e02ee148c/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2024-11-28 05:11:16,413 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12537f27-287e-433a-b2d7-4c2e02ee148c/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:11:16,413 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting free_reportsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [free_reportsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 77 more)] === [2024-11-28 05:11:16,414 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:11:16,414 INFO L85 PathProgramCache]: Analyzing trace with hash 545840539, now seen corresponding path program 1 times [2024-11-28 05:11:16,414 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 05:11:16,414 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1684275750] [2024-11-28 05:11:16,414 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:11:16,414 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:11:16,414 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12537f27-287e-433a-b2d7-4c2e02ee148c/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 05:11:16,416 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12537f27-287e-433a-b2d7-4c2e02ee148c/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 05:11:16,417 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12537f27-287e-433a-b2d7-4c2e02ee148c/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2024-11-28 05:11:16,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:11:16,641 INFO L256 TraceCheckSpWp]: Trace formula consists of 233 conjuncts, 51 conjuncts are in the unsatisfiable core [2024-11-28 05:11:16,645 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 05:11:16,702 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 05:11:16,709 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 05:11:16,980 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-28 05:11:16,990 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-28 05:11:17,064 INFO L349 Elim1Store]: treesize reduction 26, result has 33.3 percent of original size [2024-11-28 05:11:17,064 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 24 treesize of output 26 [2024-11-28 05:11:17,084 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 13 [2024-11-28 05:11:17,139 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 3 [2024-11-28 05:11:21,303 INFO L349 Elim1Store]: treesize reduction 19, result has 47.2 percent of original size [2024-11-28 05:11:21,303 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 16 treesize of output 26 [2024-11-28 05:11:21,614 INFO L349 Elim1Store]: treesize reduction 13, result has 40.9 percent of original size [2024-11-28 05:11:21,614 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 16 treesize of output 15 [2024-11-28 05:11:21,638 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2024-11-28 05:11:21,718 INFO L349 Elim1Store]: treesize reduction 13, result has 40.9 percent of original size [2024-11-28 05:11:21,719 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 42 treesize of output 37 [2024-11-28 05:11:21,755 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 22 [2024-11-28 05:11:22,515 INFO L349 Elim1Store]: treesize reduction 13, result has 40.9 percent of original size [2024-11-28 05:11:22,516 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 74 treesize of output 69 [2024-11-28 05:11:22,638 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 22 [2024-11-28 05:11:22,839 INFO L349 Elim1Store]: treesize reduction 13, result has 40.9 percent of original size [2024-11-28 05:11:22,839 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 20 treesize of output 19 [2024-11-28 05:11:24,004 INFO L349 Elim1Store]: treesize reduction 15, result has 37.5 percent of original size [2024-11-28 05:11:24,004 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 9 [2024-11-28 05:11:24,799 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 21 [2024-11-28 05:11:25,187 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 05:11:25,187 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 05:11:25,188 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 05:11:25,188 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1684275750] [2024-11-28 05:11:25,188 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1684275750] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 05:11:25,188 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 05:11:25,188 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2024-11-28 05:11:25,188 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [525255254] [2024-11-28 05:11:25,188 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 05:11:25,189 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-11-28 05:11:25,189 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 05:11:25,189 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-11-28 05:11:25,190 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=298, Unknown=2, NotChecked=0, Total=342 [2024-11-28 05:11:25,190 INFO L87 Difference]: Start difference. First operand 350 states and 447 transitions. Second operand has 19 states, 15 states have (on average 2.533333333333333) internal successors, (38), 16 states have internal predecessors, (38), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-28 05:11:36,239 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 05:11:36,239 INFO L93 Difference]: Finished difference Result 455 states and 535 transitions. [2024-11-28 05:11:36,240 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2024-11-28 05:11:36,240 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 15 states have (on average 2.533333333333333) internal successors, (38), 16 states have internal predecessors, (38), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 45 [2024-11-28 05:11:36,240 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 05:11:36,242 INFO L225 Difference]: With dead ends: 455 [2024-11-28 05:11:36,242 INFO L226 Difference]: Without dead ends: 455 [2024-11-28 05:11:36,243 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 25 SyntacticMatches, 2 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 150 ImplicationChecksByTransitivity, 6.8s TimeCoverageRelationStatistics Valid=107, Invalid=815, Unknown=8, NotChecked=0, Total=930 [2024-11-28 05:11:36,243 INFO L435 NwaCegarLoop]: 114 mSDtfsCounter, 325 mSDsluCounter, 1387 mSDsCounter, 0 mSdLazyCounter, 2262 mSolverCounterSat, 22 mSolverCounterUnsat, 7 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 325 SdHoareTripleChecker+Valid, 1501 SdHoareTripleChecker+Invalid, 2291 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 2262 IncrementalHoareTripleChecker+Invalid, 7 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.3s IncrementalHoareTripleChecker+Time [2024-11-28 05:11:36,243 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [325 Valid, 1501 Invalid, 2291 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 2262 Invalid, 7 Unknown, 0 Unchecked, 9.3s Time] [2024-11-28 05:11:36,244 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 455 states. [2024-11-28 05:11:36,254 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 455 to 387. [2024-11-28 05:11:36,255 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 387 states, 295 states have (on average 1.576271186440678) internal successors, (465), 359 states have internal predecessors, (465), 15 states have call successors, (15), 13 states have call predecessors, (15), 15 states have return successors, (21), 14 states have call predecessors, (21), 15 states have call successors, (21) [2024-11-28 05:11:36,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 387 states to 387 states and 501 transitions. [2024-11-28 05:11:36,258 INFO L78 Accepts]: Start accepts. Automaton has 387 states and 501 transitions. Word has length 45 [2024-11-28 05:11:36,258 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 05:11:36,258 INFO L471 AbstractCegarLoop]: Abstraction has 387 states and 501 transitions. [2024-11-28 05:11:36,258 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 15 states have (on average 2.533333333333333) internal successors, (38), 16 states have internal predecessors, (38), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-28 05:11:36,258 INFO L276 IsEmpty]: Start isEmpty. Operand 387 states and 501 transitions. [2024-11-28 05:11:36,259 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2024-11-28 05:11:36,259 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 05:11:36,259 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] [2024-11-28 05:11:36,275 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12537f27-287e-433a-b2d7-4c2e02ee148c/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Ended with exit code 0 [2024-11-28 05:11:36,460 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12537f27-287e-433a-b2d7-4c2e02ee148c/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:11:36,460 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr16REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [free_reportsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 77 more)] === [2024-11-28 05:11:36,460 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:11:36,461 INFO L85 PathProgramCache]: Analyzing trace with hash 2040249510, now seen corresponding path program 1 times [2024-11-28 05:11:36,461 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 05:11:36,461 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2145619351] [2024-11-28 05:11:36,461 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:11:36,461 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:11:36,461 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12537f27-287e-433a-b2d7-4c2e02ee148c/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 05:11:36,467 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12537f27-287e-433a-b2d7-4c2e02ee148c/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 05:11:36,469 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12537f27-287e-433a-b2d7-4c2e02ee148c/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2024-11-28 05:11:36,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:11:36,889 INFO L256 TraceCheckSpWp]: Trace formula consists of 291 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-11-28 05:11:36,892 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 05:11:37,036 INFO L349 Elim1Store]: treesize reduction 24, result has 33.3 percent of original size [2024-11-28 05:11:37,036 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 05:11:37,182 INFO L349 Elim1Store]: treesize reduction 24, result has 33.3 percent of original size [2024-11-28 05:11:37,183 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 05:11:37,342 INFO L349 Elim1Store]: treesize reduction 24, result has 33.3 percent of original size [2024-11-28 05:11:37,342 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 05:11:37,516 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 05:11:37,516 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 05:11:37,516 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 05:11:37,516 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2145619351] [2024-11-28 05:11:37,516 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2145619351] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 05:11:37,516 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 05:11:37,516 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 05:11:37,517 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [430698482] [2024-11-28 05:11:37,517 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 05:11:37,517 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-28 05:11:37,517 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 05:11:37,517 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-28 05:11:37,518 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-28 05:11:37,518 INFO L87 Difference]: Start difference. First operand 387 states and 501 transitions. Second operand has 5 states, 4 states have (on average 9.5) internal successors, (38), 4 states have internal predecessors, (38), 1 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2024-11-28 05:11:38,872 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 05:11:38,873 INFO L93 Difference]: Finished difference Result 406 states and 504 transitions. [2024-11-28 05:11:38,873 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-28 05:11:38,874 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 9.5) internal successors, (38), 4 states have internal predecessors, (38), 1 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 44 [2024-11-28 05:11:38,874 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 05:11:38,876 INFO L225 Difference]: With dead ends: 406 [2024-11-28 05:11:38,876 INFO L226 Difference]: Without dead ends: 406 [2024-11-28 05:11:38,876 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 39 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2024-11-28 05:11:38,877 INFO L435 NwaCegarLoop]: 147 mSDtfsCounter, 170 mSDsluCounter, 241 mSDsCounter, 0 mSdLazyCounter, 305 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 171 SdHoareTripleChecker+Valid, 388 SdHoareTripleChecker+Invalid, 328 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 305 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2024-11-28 05:11:38,878 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [171 Valid, 388 Invalid, 328 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 305 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2024-11-28 05:11:38,879 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 406 states. [2024-11-28 05:11:38,891 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 406 to 386. [2024-11-28 05:11:38,892 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 386 states, 295 states have (on average 1.5661016949152542) internal successors, (462), 358 states have internal predecessors, (462), 15 states have call successors, (15), 13 states have call predecessors, (15), 15 states have return successors, (21), 14 states have call predecessors, (21), 15 states have call successors, (21) [2024-11-28 05:11:38,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 386 states to 386 states and 498 transitions. [2024-11-28 05:11:38,895 INFO L78 Accepts]: Start accepts. Automaton has 386 states and 498 transitions. Word has length 44 [2024-11-28 05:11:38,895 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 05:11:38,895 INFO L471 AbstractCegarLoop]: Abstraction has 386 states and 498 transitions. [2024-11-28 05:11:38,896 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 9.5) internal successors, (38), 4 states have internal predecessors, (38), 1 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2024-11-28 05:11:38,896 INFO L276 IsEmpty]: Start isEmpty. Operand 386 states and 498 transitions. [2024-11-28 05:11:38,897 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2024-11-28 05:11:38,897 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 05:11:38,897 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] [2024-11-28 05:11:38,915 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12537f27-287e-433a-b2d7-4c2e02ee148c/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Ended with exit code 0 [2024-11-28 05:11:39,097 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12537f27-287e-433a-b2d7-4c2e02ee148c/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:11:39,098 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr17REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [free_reportsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 77 more)] === [2024-11-28 05:11:39,099 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:11:39,099 INFO L85 PathProgramCache]: Analyzing trace with hash 2040249511, now seen corresponding path program 1 times [2024-11-28 05:11:39,099 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 05:11:39,099 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [47511607] [2024-11-28 05:11:39,099 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:11:39,100 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:11:39,100 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12537f27-287e-433a-b2d7-4c2e02ee148c/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 05:11:39,103 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12537f27-287e-433a-b2d7-4c2e02ee148c/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 05:11:39,105 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12537f27-287e-433a-b2d7-4c2e02ee148c/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2024-11-28 05:11:39,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:11:39,479 INFO L256 TraceCheckSpWp]: Trace formula consists of 291 conjuncts, 44 conjuncts are in the unsatisfiable core [2024-11-28 05:11:39,485 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 05:11:39,683 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 05:11:39,684 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2024-11-28 05:11:39,870 INFO L349 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2024-11-28 05:11:39,870 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 20 [2024-11-28 05:11:39,909 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 05:11:40,196 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 05:11:40,223 INFO L349 Elim1Store]: treesize reduction 19, result has 32.1 percent of original size [2024-11-28 05:11:40,223 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 23 treesize of output 32 [2024-11-28 05:11:40,234 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 05:11:40,235 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2024-11-28 05:11:41,218 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-28 05:11:41,219 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-28 05:11:41,220 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-28 05:11:41,221 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 33 [2024-11-28 05:11:41,592 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 28 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 63 treesize of output 61 [2024-11-28 05:11:45,878 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 45 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 0 case distinctions, treesize of input 76 treesize of output 91 [2024-11-28 05:11:53,386 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 9 select indices, 9 select index equivalence classes, 78 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 0 case distinctions, treesize of input 109 treesize of output 100 [2024-11-28 05:12:01,459 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 9 select indices, 9 select index equivalence classes, 36 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 0 case distinctions, treesize of input 98 treesize of output 46 [2024-11-28 05:12:01,613 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 05:12:01,614 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 05:12:01,614 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 05:12:01,614 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [47511607] [2024-11-28 05:12:01,614 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [47511607] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 05:12:01,614 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 05:12:01,614 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2024-11-28 05:12:01,614 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [899960519] [2024-11-28 05:12:01,614 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 05:12:01,615 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-11-28 05:12:01,615 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 05:12:01,615 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-11-28 05:12:01,615 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=220, Unknown=5, NotChecked=0, Total=272 [2024-11-28 05:12:01,616 INFO L87 Difference]: Start difference. First operand 386 states and 498 transitions. Second operand has 17 states, 15 states have (on average 2.533333333333333) internal successors, (38), 15 states have internal predecessors, (38), 3 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-28 05:12:07,010 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-28 05:12:11,027 WARN L539 Checker$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 05:12:15,032 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-28 05:12:29,326 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.65s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-28 05:12:32,584 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.26s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-28 05:12:36,588 WARN L539 Checker$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 05:12:40,757 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-28 05:12:44,761 WARN L539 Checker$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 05:13:00,692 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-28 05:13:04,696 WARN L539 Checker$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 05:13:08,893 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-28 05:13:21,267 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.27s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-28 05:13:47,534 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-28 05:13:51,746 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-28 05:13:55,157 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.16s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-28 05:14:10,057 WARN L539 Checker$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 05:14:18,472 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 05:14:18,472 INFO L93 Difference]: Finished difference Result 445 states and 539 transitions. [2024-11-28 05:14:18,473 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2024-11-28 05:14:18,473 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 15 states have (on average 2.533333333333333) internal successors, (38), 15 states have internal predecessors, (38), 3 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) Word has length 44 [2024-11-28 05:14:18,473 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 05:14:18,475 INFO L225 Difference]: With dead ends: 445 [2024-11-28 05:14:18,475 INFO L226 Difference]: Without dead ends: 445 [2024-11-28 05:14:18,475 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 276 ImplicationChecksByTransitivity, 84.3s TimeCoverageRelationStatistics Valid=211, Invalid=1028, Unknown=21, NotChecked=0, Total=1260 [2024-11-28 05:14:18,476 INFO L435 NwaCegarLoop]: 89 mSDtfsCounter, 534 mSDsluCounter, 599 mSDsCounter, 0 mSdLazyCounter, 1473 mSolverCounterSat, 76 mSolverCounterUnsat, 23 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 71.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 537 SdHoareTripleChecker+Valid, 688 SdHoareTripleChecker+Invalid, 1572 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 76 IncrementalHoareTripleChecker+Valid, 1473 IncrementalHoareTripleChecker+Invalid, 23 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 72.0s IncrementalHoareTripleChecker+Time [2024-11-28 05:14:18,476 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [537 Valid, 688 Invalid, 1572 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [76 Valid, 1473 Invalid, 23 Unknown, 0 Unchecked, 72.0s Time] [2024-11-28 05:14:18,478 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 445 states. [2024-11-28 05:14:18,490 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 445 to 359. [2024-11-28 05:14:18,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 359 states, 275 states have (on average 1.509090909090909) internal successors, (415), 331 states have internal predecessors, (415), 15 states have call successors, (15), 13 states have call predecessors, (15), 15 states have return successors, (21), 14 states have call predecessors, (21), 15 states have call successors, (21) [2024-11-28 05:14:18,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 359 states to 359 states and 451 transitions. [2024-11-28 05:14:18,496 INFO L78 Accepts]: Start accepts. Automaton has 359 states and 451 transitions. Word has length 44 [2024-11-28 05:14:18,497 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 05:14:18,497 INFO L471 AbstractCegarLoop]: Abstraction has 359 states and 451 transitions. [2024-11-28 05:14:18,497 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 15 states have (on average 2.533333333333333) internal successors, (38), 15 states have internal predecessors, (38), 3 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-28 05:14:18,497 INFO L276 IsEmpty]: Start isEmpty. Operand 359 states and 451 transitions. [2024-11-28 05:14:18,497 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2024-11-28 05:14:18,497 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 05:14:18,498 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] [2024-11-28 05:14:18,515 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12537f27-287e-433a-b2d7-4c2e02ee148c/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Ended with exit code 0 [2024-11-28 05:14:18,698 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12537f27-287e-433a-b2d7-4c2e02ee148c/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:14:18,698 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting free_reportsErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [free_reportsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 77 more)] === [2024-11-28 05:14:18,699 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:14:18,699 INFO L85 PathProgramCache]: Analyzing trace with hash 566746075, now seen corresponding path program 1 times [2024-11-28 05:14:18,699 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 05:14:18,699 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1906322591] [2024-11-28 05:14:18,699 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:14:18,699 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:14:18,699 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12537f27-287e-433a-b2d7-4c2e02ee148c/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 05:14:18,701 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12537f27-287e-433a-b2d7-4c2e02ee148c/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 05:14:18,703 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12537f27-287e-433a-b2d7-4c2e02ee148c/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2024-11-28 05:14:18,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:14:18,967 INFO L256 TraceCheckSpWp]: Trace formula consists of 243 conjuncts, 72 conjuncts are in the unsatisfiable core [2024-11-28 05:14:18,974 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 05:14:19,210 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 05:14:19,416 INFO L349 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2024-11-28 05:14:19,417 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 19 treesize of output 27 [2024-11-28 05:14:20,136 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-28 05:14:20,368 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2024-11-28 05:14:20,729 INFO L349 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2024-11-28 05:14:20,729 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 7 [2024-11-28 05:14:21,034 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-28 05:14:21,077 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 46 treesize of output 37 [2024-11-28 05:14:21,498 INFO L349 Elim1Store]: treesize reduction 98, result has 30.0 percent of original size [2024-11-28 05:14:21,498 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 7 case distinctions, treesize of input 39 treesize of output 60 [2024-11-28 05:14:21,567 INFO L349 Elim1Store]: treesize reduction 13, result has 7.1 percent of original size [2024-11-28 05:14:21,567 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 16 [2024-11-28 05:14:22,283 INFO L349 Elim1Store]: treesize reduction 32, result has 34.7 percent of original size [2024-11-28 05:14:22,283 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 31 treesize of output 35 [2024-11-28 05:14:22,773 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2024-11-28 05:14:22,827 INFO L349 Elim1Store]: treesize reduction 25, result has 16.7 percent of original size [2024-11-28 05:14:22,827 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 55 treesize of output 42 [2024-11-28 05:14:23,119 INFO L349 Elim1Store]: treesize reduction 25, result has 16.7 percent of original size [2024-11-28 05:14:23,119 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 55 treesize of output 42 [2024-11-28 05:14:23,156 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2024-11-28 05:14:24,073 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2024-11-28 05:14:24,720 INFO L349 Elim1Store]: treesize reduction 24, result has 4.0 percent of original size [2024-11-28 05:14:24,720 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 61 treesize of output 24 [2024-11-28 05:14:25,055 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 05:14:25,055 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 05:14:25,055 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 05:14:25,055 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1906322591] [2024-11-28 05:14:25,055 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1906322591] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 05:14:25,055 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 05:14:25,055 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2024-11-28 05:14:25,055 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [94320242] [2024-11-28 05:14:25,055 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 05:14:25,056 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2024-11-28 05:14:25,056 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 05:14:25,056 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2024-11-28 05:14:25,057 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=625, Unknown=0, NotChecked=0, Total=702 [2024-11-28 05:14:25,058 INFO L87 Difference]: Start difference. First operand 359 states and 451 transitions. Second operand has 27 states, 24 states have (on average 1.6666666666666667) internal successors, (40), 19 states have internal predecessors, (40), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-28 05:14:41,877 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 05:14:41,877 INFO L93 Difference]: Finished difference Result 527 states and 601 transitions. [2024-11-28 05:14:41,878 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2024-11-28 05:14:41,878 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 24 states have (on average 1.6666666666666667) internal successors, (40), 19 states have internal predecessors, (40), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 47 [2024-11-28 05:14:41,878 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 05:14:41,880 INFO L225 Difference]: With dead ends: 527 [2024-11-28 05:14:41,880 INFO L226 Difference]: Without dead ends: 527 [2024-11-28 05:14:41,881 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 612 ImplicationChecksByTransitivity, 7.4s TimeCoverageRelationStatistics Valid=287, Invalid=2365, Unknown=0, NotChecked=0, Total=2652 [2024-11-28 05:14:41,882 INFO L435 NwaCegarLoop]: 87 mSDtfsCounter, 881 mSDsluCounter, 1312 mSDsCounter, 0 mSdLazyCounter, 2637 mSolverCounterSat, 81 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 884 SdHoareTripleChecker+Valid, 1399 SdHoareTripleChecker+Invalid, 2718 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 81 IncrementalHoareTripleChecker+Valid, 2637 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.2s IncrementalHoareTripleChecker+Time [2024-11-28 05:14:41,882 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [884 Valid, 1399 Invalid, 2718 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [81 Valid, 2637 Invalid, 0 Unknown, 0 Unchecked, 12.2s Time] [2024-11-28 05:14:41,884 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 527 states. [2024-11-28 05:14:41,893 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 527 to 409. [2024-11-28 05:14:41,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 409 states, 317 states have (on average 1.526813880126183) internal successors, (484), 376 states have internal predecessors, (484), 20 states have call successors, (20), 15 states have call predecessors, (20), 18 states have return successors, (29), 17 states have call predecessors, (29), 20 states have call successors, (29) [2024-11-28 05:14:41,896 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 409 states to 409 states and 533 transitions. [2024-11-28 05:14:41,896 INFO L78 Accepts]: Start accepts. Automaton has 409 states and 533 transitions. Word has length 47 [2024-11-28 05:14:41,896 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 05:14:41,896 INFO L471 AbstractCegarLoop]: Abstraction has 409 states and 533 transitions. [2024-11-28 05:14:41,897 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 24 states have (on average 1.6666666666666667) internal successors, (40), 19 states have internal predecessors, (40), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-28 05:14:41,897 INFO L276 IsEmpty]: Start isEmpty. Operand 409 states and 533 transitions. [2024-11-28 05:14:41,897 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2024-11-28 05:14:41,897 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 05:14:41,898 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] [2024-11-28 05:14:41,911 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12537f27-287e-433a-b2d7-4c2e02ee148c/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Ended with exit code 0 [2024-11-28 05:14:42,098 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12537f27-287e-433a-b2d7-4c2e02ee148c/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:14:42,098 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting free_reportsErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [free_reportsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 77 more)] === [2024-11-28 05:14:42,099 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:14:42,099 INFO L85 PathProgramCache]: Analyzing trace with hash 566746076, now seen corresponding path program 1 times [2024-11-28 05:14:42,099 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 05:14:42,099 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [478413532] [2024-11-28 05:14:42,099 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:14:42,099 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:14:42,099 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12537f27-287e-433a-b2d7-4c2e02ee148c/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 05:14:42,101 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12537f27-287e-433a-b2d7-4c2e02ee148c/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 05:14:42,102 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12537f27-287e-433a-b2d7-4c2e02ee148c/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2024-11-28 05:14:42,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:14:42,337 INFO L256 TraceCheckSpWp]: Trace formula consists of 243 conjuncts, 81 conjuncts are in the unsatisfiable core [2024-11-28 05:14:42,343 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 05:14:42,531 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 05:14:42,709 INFO L349 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2024-11-28 05:14:42,709 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 19 treesize of output 27 [2024-11-28 05:14:43,299 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-28 05:14:43,339 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-28 05:14:43,537 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 11 [2024-11-28 05:14:43,574 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2024-11-28 05:14:43,899 INFO L349 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2024-11-28 05:14:43,900 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 7 [2024-11-28 05:14:44,133 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2024-11-28 05:14:44,183 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 46 treesize of output 37 [2024-11-28 05:14:44,692 INFO L349 Elim1Store]: treesize reduction 98, result has 30.0 percent of original size [2024-11-28 05:14:44,692 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 7 case distinctions, treesize of input 39 treesize of output 60 [2024-11-28 05:14:44,762 INFO L349 Elim1Store]: treesize reduction 13, result has 7.1 percent of original size [2024-11-28 05:14:44,763 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 16 [2024-11-28 05:14:45,721 INFO L349 Elim1Store]: treesize reduction 32, result has 34.7 percent of original size [2024-11-28 05:14:45,722 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 31 treesize of output 35 [2024-11-28 05:14:46,168 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 25 [2024-11-28 05:14:46,210 INFO L349 Elim1Store]: treesize reduction 25, result has 16.7 percent of original size [2024-11-28 05:14:46,210 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 66 treesize of output 51 [2024-11-28 05:14:46,478 INFO L349 Elim1Store]: treesize reduction 25, result has 16.7 percent of original size [2024-11-28 05:14:46,478 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 66 treesize of output 51 [2024-11-28 05:14:46,488 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 25 [2024-11-28 05:14:48,047 INFO L349 Elim1Store]: treesize reduction 24, result has 4.0 percent of original size [2024-11-28 05:14:48,048 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 70 treesize of output 29 [2024-11-28 05:14:48,067 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2024-11-28 05:14:48,397 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 05:14:48,397 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 05:14:48,397 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 05:14:48,397 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [478413532] [2024-11-28 05:14:48,397 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [478413532] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 05:14:48,397 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 05:14:48,398 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2024-11-28 05:14:48,398 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [93430123] [2024-11-28 05:14:48,398 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 05:14:48,398 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2024-11-28 05:14:48,398 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 05:14:48,399 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2024-11-28 05:14:48,399 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=625, Unknown=0, NotChecked=0, Total=702 [2024-11-28 05:14:48,399 INFO L87 Difference]: Start difference. First operand 409 states and 533 transitions. Second operand has 27 states, 24 states have (on average 1.6666666666666667) internal successors, (40), 19 states have internal predecessors, (40), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-28 05:15:05,806 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 05:15:05,806 INFO L93 Difference]: Finished difference Result 469 states and 519 transitions. [2024-11-28 05:15:05,807 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2024-11-28 05:15:05,807 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 24 states have (on average 1.6666666666666667) internal successors, (40), 19 states have internal predecessors, (40), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 47 [2024-11-28 05:15:05,807 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 05:15:05,808 INFO L225 Difference]: With dead ends: 469 [2024-11-28 05:15:05,808 INFO L226 Difference]: Without dead ends: 469 [2024-11-28 05:15:05,810 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 612 ImplicationChecksByTransitivity, 7.8s TimeCoverageRelationStatistics Valid=287, Invalid=2365, Unknown=0, NotChecked=0, Total=2652 [2024-11-28 05:15:05,810 INFO L435 NwaCegarLoop]: 88 mSDtfsCounter, 731 mSDsluCounter, 1457 mSDsCounter, 0 mSdLazyCounter, 2821 mSolverCounterSat, 70 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 733 SdHoareTripleChecker+Valid, 1545 SdHoareTripleChecker+Invalid, 2891 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 70 IncrementalHoareTripleChecker+Valid, 2821 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.4s IncrementalHoareTripleChecker+Time [2024-11-28 05:15:05,810 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [733 Valid, 1545 Invalid, 2891 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [70 Valid, 2821 Invalid, 0 Unknown, 0 Unchecked, 12.4s Time] [2024-11-28 05:15:05,811 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 469 states. [2024-11-28 05:15:05,818 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 469 to 374. [2024-11-28 05:15:05,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 374 states, 290 states have (on average 1.4827586206896552) internal successors, (430), 344 states have internal predecessors, (430), 15 states have call successors, (15), 14 states have call predecessors, (15), 15 states have return successors, (19), 15 states have call predecessors, (19), 15 states have call successors, (19) [2024-11-28 05:15:05,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 374 states to 374 states and 464 transitions. [2024-11-28 05:15:05,820 INFO L78 Accepts]: Start accepts. Automaton has 374 states and 464 transitions. Word has length 47 [2024-11-28 05:15:05,821 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 05:15:05,821 INFO L471 AbstractCegarLoop]: Abstraction has 374 states and 464 transitions. [2024-11-28 05:15:05,821 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 24 states have (on average 1.6666666666666667) internal successors, (40), 19 states have internal predecessors, (40), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-28 05:15:05,821 INFO L276 IsEmpty]: Start isEmpty. Operand 374 states and 464 transitions. [2024-11-28 05:15:05,822 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2024-11-28 05:15:05,822 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 05:15:05,822 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] [2024-11-28 05:15:05,835 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12537f27-287e-433a-b2d7-4c2e02ee148c/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Ended with exit code 0 [2024-11-28 05:15:06,025 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12537f27-287e-433a-b2d7-4c2e02ee148c/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:15:06,026 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr18REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [free_reportsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 77 more)] === [2024-11-28 05:15:06,027 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:15:06,027 INFO L85 PathProgramCache]: Analyzing trace with hash -2120271065, now seen corresponding path program 1 times [2024-11-28 05:15:06,028 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 05:15:06,028 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1265389948] [2024-11-28 05:15:06,028 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:15:06,028 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:15:06,028 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12537f27-287e-433a-b2d7-4c2e02ee148c/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 05:15:06,030 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12537f27-287e-433a-b2d7-4c2e02ee148c/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 05:15:06,034 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12537f27-287e-433a-b2d7-4c2e02ee148c/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2024-11-28 05:15:06,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:15:06,347 INFO L256 TraceCheckSpWp]: Trace formula consists of 315 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-28 05:15:06,350 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 05:15:06,357 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 05:15:06,607 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 05:15:06,607 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 05:15:06,608 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 05:15:06,608 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1265389948] [2024-11-28 05:15:06,608 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1265389948] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 05:15:06,608 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 05:15:06,608 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-28 05:15:06,608 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [814807081] [2024-11-28 05:15:06,608 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 05:15:06,608 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-28 05:15:06,608 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 05:15:06,609 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-28 05:15:06,609 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-28 05:15:06,609 INFO L87 Difference]: Start difference. First operand 374 states and 464 transitions. Second operand has 7 states, 6 states have (on average 6.666666666666667) internal successors, (40), 6 states have internal predecessors, (40), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2024-11-28 05:15:08,389 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 05:15:08,389 INFO L93 Difference]: Finished difference Result 384 states and 462 transitions. [2024-11-28 05:15:08,390 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-28 05:15:08,390 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 6.666666666666667) internal successors, (40), 6 states have internal predecessors, (40), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 46 [2024-11-28 05:15:08,391 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 05:15:08,392 INFO L225 Difference]: With dead ends: 384 [2024-11-28 05:15:08,392 INFO L226 Difference]: Without dead ends: 384 [2024-11-28 05:15:08,392 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-11-28 05:15:08,393 INFO L435 NwaCegarLoop]: 162 mSDtfsCounter, 35 mSDsluCounter, 530 mSDsCounter, 0 mSdLazyCounter, 422 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 692 SdHoareTripleChecker+Invalid, 425 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 422 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2024-11-28 05:15:08,393 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [35 Valid, 692 Invalid, 425 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 422 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2024-11-28 05:15:08,394 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 384 states. [2024-11-28 05:15:08,406 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 384 to 373. [2024-11-28 05:15:08,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 373 states, 290 states have (on average 1.4689655172413794) internal successors, (426), 343 states have internal predecessors, (426), 15 states have call successors, (15), 14 states have call predecessors, (15), 15 states have return successors, (19), 15 states have call predecessors, (19), 15 states have call successors, (19) [2024-11-28 05:15:08,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 373 states to 373 states and 460 transitions. [2024-11-28 05:15:08,409 INFO L78 Accepts]: Start accepts. Automaton has 373 states and 460 transitions. Word has length 46 [2024-11-28 05:15:08,409 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 05:15:08,409 INFO L471 AbstractCegarLoop]: Abstraction has 373 states and 460 transitions. [2024-11-28 05:15:08,410 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 6.666666666666667) internal successors, (40), 6 states have internal predecessors, (40), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2024-11-28 05:15:08,410 INFO L276 IsEmpty]: Start isEmpty. Operand 373 states and 460 transitions. [2024-11-28 05:15:08,410 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2024-11-28 05:15:08,410 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 05:15:08,410 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] [2024-11-28 05:15:08,424 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12537f27-287e-433a-b2d7-4c2e02ee148c/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Ended with exit code 0 [2024-11-28 05:15:08,615 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12537f27-287e-433a-b2d7-4c2e02ee148c/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:15:08,615 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr19REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [free_reportsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 77 more)] === [2024-11-28 05:15:08,615 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:15:08,615 INFO L85 PathProgramCache]: Analyzing trace with hash -2120271064, now seen corresponding path program 1 times [2024-11-28 05:15:08,616 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 05:15:08,616 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2079492056] [2024-11-28 05:15:08,616 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:15:08,616 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:15:08,616 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12537f27-287e-433a-b2d7-4c2e02ee148c/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 05:15:08,618 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12537f27-287e-433a-b2d7-4c2e02ee148c/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 05:15:08,619 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12537f27-287e-433a-b2d7-4c2e02ee148c/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2024-11-28 05:15:08,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:15:08,902 INFO L256 TraceCheckSpWp]: Trace formula consists of 315 conjuncts, 20 conjuncts are in the unsatisfiable core [2024-11-28 05:15:08,905 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 05:15:08,914 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 05:15:09,446 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 05:15:09,446 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 05:15:09,446 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 05:15:09,446 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2079492056] [2024-11-28 05:15:09,446 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2079492056] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 05:15:09,446 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 05:15:09,446 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-28 05:15:09,446 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [410383462] [2024-11-28 05:15:09,446 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 05:15:09,447 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-28 05:15:09,447 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 05:15:09,447 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-28 05:15:09,447 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-28 05:15:09,447 INFO L87 Difference]: Start difference. First operand 373 states and 460 transitions. Second operand has 7 states, 6 states have (on average 6.666666666666667) internal successors, (40), 6 states have internal predecessors, (40), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2024-11-28 05:15:11,152 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 05:15:11,152 INFO L93 Difference]: Finished difference Result 382 states and 460 transitions. [2024-11-28 05:15:11,153 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-28 05:15:11,153 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 6.666666666666667) internal successors, (40), 6 states have internal predecessors, (40), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 46 [2024-11-28 05:15:11,154 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 05:15:11,155 INFO L225 Difference]: With dead ends: 382 [2024-11-28 05:15:11,155 INFO L226 Difference]: Without dead ends: 382 [2024-11-28 05:15:11,155 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-11-28 05:15:11,156 INFO L435 NwaCegarLoop]: 162 mSDtfsCounter, 31 mSDsluCounter, 591 mSDsCounter, 0 mSdLazyCounter, 362 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 753 SdHoareTripleChecker+Invalid, 363 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 362 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2024-11-28 05:15:11,156 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [32 Valid, 753 Invalid, 363 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 362 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2024-11-28 05:15:11,157 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 382 states. [2024-11-28 05:15:11,163 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 382 to 373. [2024-11-28 05:15:11,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 373 states, 290 states have (on average 1.4620689655172414) internal successors, (424), 343 states have internal predecessors, (424), 15 states have call successors, (15), 14 states have call predecessors, (15), 15 states have return successors, (19), 15 states have call predecessors, (19), 15 states have call successors, (19) [2024-11-28 05:15:11,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 373 states to 373 states and 458 transitions. [2024-11-28 05:15:11,166 INFO L78 Accepts]: Start accepts. Automaton has 373 states and 458 transitions. Word has length 46 [2024-11-28 05:15:11,166 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 05:15:11,166 INFO L471 AbstractCegarLoop]: Abstraction has 373 states and 458 transitions. [2024-11-28 05:15:11,167 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 6.666666666666667) internal successors, (40), 6 states have internal predecessors, (40), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2024-11-28 05:15:11,167 INFO L276 IsEmpty]: Start isEmpty. Operand 373 states and 458 transitions. [2024-11-28 05:15:11,167 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2024-11-28 05:15:11,167 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 05:15:11,167 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] [2024-11-28 05:15:11,182 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12537f27-287e-433a-b2d7-4c2e02ee148c/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Ended with exit code 0 [2024-11-28 05:15:11,368 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12537f27-287e-433a-b2d7-4c2e02ee148c/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:15:11,368 INFO L396 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr22REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [free_reportsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 77 more)] === [2024-11-28 05:15:11,368 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:15:11,369 INFO L85 PathProgramCache]: Analyzing trace with hash 1088856030, now seen corresponding path program 1 times [2024-11-28 05:15:11,369 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 05:15:11,369 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [563261536] [2024-11-28 05:15:11,369 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:15:11,369 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:15:11,369 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12537f27-287e-433a-b2d7-4c2e02ee148c/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 05:15:11,371 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12537f27-287e-433a-b2d7-4c2e02ee148c/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 05:15:11,372 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12537f27-287e-433a-b2d7-4c2e02ee148c/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2024-11-28 05:15:11,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:15:11,735 INFO L256 TraceCheckSpWp]: Trace formula consists of 332 conjuncts, 34 conjuncts are in the unsatisfiable core [2024-11-28 05:15:11,739 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 05:15:11,845 INFO L349 Elim1Store]: treesize reduction 24, result has 33.3 percent of original size [2024-11-28 05:15:11,845 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 05:15:12,113 INFO L349 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2024-11-28 05:15:12,113 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 20 [2024-11-28 05:15:12,331 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-28 05:15:12,489 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 10 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 48 treesize of output 15 [2024-11-28 05:15:12,896 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-28 05:15:13,079 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 05:15:13,079 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 05:15:13,079 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 05:15:13,079 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [563261536] [2024-11-28 05:15:13,079 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [563261536] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 05:15:13,079 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 05:15:13,079 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-11-28 05:15:13,079 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1888463736] [2024-11-28 05:15:13,079 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 05:15:13,080 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-28 05:15:13,080 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 05:15:13,080 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-28 05:15:13,080 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=131, Unknown=0, NotChecked=0, Total=156 [2024-11-28 05:15:13,081 INFO L87 Difference]: Start difference. First operand 373 states and 458 transitions. Second operand has 13 states, 11 states have (on average 3.909090909090909) internal successors, (43), 11 states have internal predecessors, (43), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-28 05:15:17,502 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 05:15:17,502 INFO L93 Difference]: Finished difference Result 390 states and 461 transitions. [2024-11-28 05:15:17,503 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-28 05:15:17,503 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 11 states have (on average 3.909090909090909) internal successors, (43), 11 states have internal predecessors, (43), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 49 [2024-11-28 05:15:17,503 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 05:15:17,505 INFO L225 Difference]: With dead ends: 390 [2024-11-28 05:15:17,505 INFO L226 Difference]: Without dead ends: 390 [2024-11-28 05:15:17,505 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=61, Invalid=245, Unknown=0, NotChecked=0, Total=306 [2024-11-28 05:15:17,506 INFO L435 NwaCegarLoop]: 103 mSDtfsCounter, 316 mSDsluCounter, 693 mSDsCounter, 0 mSdLazyCounter, 1005 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 318 SdHoareTripleChecker+Valid, 796 SdHoareTripleChecker+Invalid, 1026 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 1005 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.0s IncrementalHoareTripleChecker+Time [2024-11-28 05:15:17,507 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [318 Valid, 796 Invalid, 1026 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 1005 Invalid, 0 Unknown, 0 Unchecked, 4.0s Time] [2024-11-28 05:15:17,508 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 390 states. [2024-11-28 05:15:17,515 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 390 to 371. [2024-11-28 05:15:17,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 371 states, 290 states have (on average 1.4344827586206896) internal successors, (416), 341 states have internal predecessors, (416), 15 states have call successors, (15), 14 states have call predecessors, (15), 15 states have return successors, (19), 15 states have call predecessors, (19), 15 states have call successors, (19) [2024-11-28 05:15:17,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 371 states to 371 states and 450 transitions. [2024-11-28 05:15:17,517 INFO L78 Accepts]: Start accepts. Automaton has 371 states and 450 transitions. Word has length 49 [2024-11-28 05:15:17,518 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 05:15:17,518 INFO L471 AbstractCegarLoop]: Abstraction has 371 states and 450 transitions. [2024-11-28 05:15:17,518 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 11 states have (on average 3.909090909090909) internal successors, (43), 11 states have internal predecessors, (43), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-28 05:15:17,518 INFO L276 IsEmpty]: Start isEmpty. Operand 371 states and 450 transitions. [2024-11-28 05:15:17,519 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2024-11-28 05:15:17,519 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 05:15:17,519 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] [2024-11-28 05:15:17,534 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12537f27-287e-433a-b2d7-4c2e02ee148c/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Ended with exit code 0 [2024-11-28 05:15:17,720 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12537f27-287e-433a-b2d7-4c2e02ee148c/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:15:17,720 INFO L396 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr23REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [free_reportsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 77 more)] === [2024-11-28 05:15:17,720 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:15:17,720 INFO L85 PathProgramCache]: Analyzing trace with hash 1088856031, now seen corresponding path program 1 times [2024-11-28 05:15:17,721 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 05:15:17,721 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1758762691] [2024-11-28 05:15:17,721 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:15:17,721 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:15:17,721 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12537f27-287e-433a-b2d7-4c2e02ee148c/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 05:15:17,724 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12537f27-287e-433a-b2d7-4c2e02ee148c/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 05:15:17,725 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12537f27-287e-433a-b2d7-4c2e02ee148c/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Waiting until timeout for monitored process [2024-11-28 05:15:18,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:15:18,089 INFO L256 TraceCheckSpWp]: Trace formula consists of 332 conjuncts, 55 conjuncts are in the unsatisfiable core [2024-11-28 05:15:18,095 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 05:15:18,293 WARN L873 $PredicateComparison]: unable to prove that (exists ((|ldv_malloc_#res.base| (_ BitVec 32))) (and (= (store |c_old(#length)| |ldv_malloc_#res.base| (select |c_#length| |ldv_malloc_#res.base|)) |c_#length|) (= (_ bv0 1) (select |c_old(#valid)| |ldv_malloc_#res.base|)))) is different from true [2024-11-28 05:15:18,343 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 05:15:18,344 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 05:15:18,568 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 05:15:18,569 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 05:15:18,861 INFO L349 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2024-11-28 05:15:18,861 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 05:15:19,150 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-28 05:15:19,170 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-28 05:15:19,415 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 10 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 44 treesize of output 11 [2024-11-28 05:15:19,432 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 10 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 44 treesize of output 11 [2024-11-28 05:15:20,405 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 05:15:20,405 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 05:15:20,405 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 05:15:20,405 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1758762691] [2024-11-28 05:15:20,405 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1758762691] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 05:15:20,405 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 05:15:20,406 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2024-11-28 05:15:20,406 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [706822421] [2024-11-28 05:15:20,406 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 05:15:20,406 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-28 05:15:20,406 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 05:15:20,407 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-28 05:15:20,407 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=228, Unknown=1, NotChecked=30, Total=306 [2024-11-28 05:15:20,407 INFO L87 Difference]: Start difference. First operand 371 states and 450 transitions. Second operand has 18 states, 16 states have (on average 2.6875) internal successors, (43), 15 states have internal predecessors, (43), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-28 05:15:29,217 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 05:15:29,217 INFO L93 Difference]: Finished difference Result 417 states and 480 transitions. [2024-11-28 05:15:29,217 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-11-28 05:15:29,217 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 16 states have (on average 2.6875) internal successors, (43), 15 states have internal predecessors, (43), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) Word has length 49 [2024-11-28 05:15:29,218 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 05:15:29,219 INFO L225 Difference]: With dead ends: 417 [2024-11-28 05:15:29,219 INFO L226 Difference]: Without dead ends: 417 [2024-11-28 05:15:29,219 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 151 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=170, Invalid=889, Unknown=1, NotChecked=62, Total=1122 [2024-11-28 05:15:29,220 INFO L435 NwaCegarLoop]: 73 mSDtfsCounter, 576 mSDsluCounter, 646 mSDsCounter, 0 mSdLazyCounter, 1668 mSolverCounterSat, 68 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 578 SdHoareTripleChecker+Valid, 719 SdHoareTripleChecker+Invalid, 2028 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 68 IncrementalHoareTripleChecker+Valid, 1668 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 292 IncrementalHoareTripleChecker+Unchecked, 7.0s IncrementalHoareTripleChecker+Time [2024-11-28 05:15:29,220 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [578 Valid, 719 Invalid, 2028 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [68 Valid, 1668 Invalid, 0 Unknown, 292 Unchecked, 7.0s Time] [2024-11-28 05:15:29,221 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 417 states. [2024-11-28 05:15:29,227 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 417 to 370. [2024-11-28 05:15:29,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 370 states, 290 states have (on average 1.4172413793103449) internal successors, (411), 340 states have internal predecessors, (411), 15 states have call successors, (15), 14 states have call predecessors, (15), 15 states have return successors, (19), 15 states have call predecessors, (19), 15 states have call successors, (19) [2024-11-28 05:15:29,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 370 states to 370 states and 445 transitions. [2024-11-28 05:15:29,230 INFO L78 Accepts]: Start accepts. Automaton has 370 states and 445 transitions. Word has length 49 [2024-11-28 05:15:29,230 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 05:15:29,230 INFO L471 AbstractCegarLoop]: Abstraction has 370 states and 445 transitions. [2024-11-28 05:15:29,230 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 16 states have (on average 2.6875) internal successors, (43), 15 states have internal predecessors, (43), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-28 05:15:29,230 INFO L276 IsEmpty]: Start isEmpty. Operand 370 states and 445 transitions. [2024-11-28 05:15:29,231 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2024-11-28 05:15:29,231 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 05:15:29,231 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] [2024-11-28 05:15:29,246 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12537f27-287e-433a-b2d7-4c2e02ee148c/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Ended with exit code 0 [2024-11-28 05:15:29,431 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12537f27-287e-433a-b2d7-4c2e02ee148c/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:15:29,432 INFO L396 AbstractCegarLoop]: === Iteration 32 === Targeting ldv_list_delErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [free_reportsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 77 more)] === [2024-11-28 05:15:29,432 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:15:29,432 INFO L85 PathProgramCache]: Analyzing trace with hash 207927451, now seen corresponding path program 1 times [2024-11-28 05:15:29,432 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 05:15:29,432 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1754140515] [2024-11-28 05:15:29,432 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:15:29,433 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:15:29,433 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12537f27-287e-433a-b2d7-4c2e02ee148c/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 05:15:29,434 INFO L229 MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12537f27-287e-433a-b2d7-4c2e02ee148c/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 05:15:29,435 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12537f27-287e-433a-b2d7-4c2e02ee148c/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Waiting until timeout for monitored process [2024-11-28 05:15:29,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:15:29,683 INFO L256 TraceCheckSpWp]: Trace formula consists of 262 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-28 05:15:29,685 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 05:15:29,766 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 05:15:29,766 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 05:15:29,766 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 05:15:29,766 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1754140515] [2024-11-28 05:15:29,766 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1754140515] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 05:15:29,766 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 05:15:29,766 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-28 05:15:29,767 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1772339764] [2024-11-28 05:15:29,767 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 05:15:29,767 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-28 05:15:29,767 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 05:15:29,767 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-28 05:15:29,768 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-28 05:15:29,768 INFO L87 Difference]: Start difference. First operand 370 states and 445 transitions. Second operand has 5 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2024-11-28 05:15:30,800 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 05:15:30,800 INFO L93 Difference]: Finished difference Result 389 states and 463 transitions. [2024-11-28 05:15:30,800 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-28 05:15:30,800 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 52 [2024-11-28 05:15:30,801 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 05:15:30,802 INFO L225 Difference]: With dead ends: 389 [2024-11-28 05:15:30,803 INFO L226 Difference]: Without dead ends: 389 [2024-11-28 05:15:30,803 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-28 05:15:30,806 INFO L435 NwaCegarLoop]: 169 mSDtfsCounter, 18 mSDsluCounter, 322 mSDsCounter, 0 mSdLazyCounter, 242 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 491 SdHoareTripleChecker+Invalid, 246 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 242 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-11-28 05:15:30,806 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 491 Invalid, 246 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 242 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-11-28 05:15:30,809 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 389 states. [2024-11-28 05:15:30,815 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 389 to 382. [2024-11-28 05:15:30,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 382 states, 301 states have (on average 1.4186046511627908) internal successors, (427), 350 states have internal predecessors, (427), 16 states have call successors, (16), 15 states have call predecessors, (16), 16 states have return successors, (20), 16 states have call predecessors, (20), 16 states have call successors, (20) [2024-11-28 05:15:30,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 382 states to 382 states and 463 transitions. [2024-11-28 05:15:30,818 INFO L78 Accepts]: Start accepts. Automaton has 382 states and 463 transitions. Word has length 52 [2024-11-28 05:15:30,818 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 05:15:30,818 INFO L471 AbstractCegarLoop]: Abstraction has 382 states and 463 transitions. [2024-11-28 05:15:30,818 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2024-11-28 05:15:30,818 INFO L276 IsEmpty]: Start isEmpty. Operand 382 states and 463 transitions. [2024-11-28 05:15:30,819 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2024-11-28 05:15:30,819 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 05:15:30,819 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] [2024-11-28 05:15:30,832 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12537f27-287e-433a-b2d7-4c2e02ee148c/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Ended with exit code 0 [2024-11-28 05:15:31,019 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12537f27-287e-433a-b2d7-4c2e02ee148c/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:15:31,020 INFO L396 AbstractCegarLoop]: === Iteration 33 === Targeting ldv_list_delErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [free_reportsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 77 more)] === [2024-11-28 05:15:31,020 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:15:31,020 INFO L85 PathProgramCache]: Analyzing trace with hash 207927452, now seen corresponding path program 1 times [2024-11-28 05:15:31,020 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 05:15:31,020 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1518132585] [2024-11-28 05:15:31,021 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:15:31,021 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:15:31,021 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12537f27-287e-433a-b2d7-4c2e02ee148c/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 05:15:31,025 INFO L229 MonitoredProcess]: Starting monitored process 34 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12537f27-287e-433a-b2d7-4c2e02ee148c/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 05:15:31,031 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12537f27-287e-433a-b2d7-4c2e02ee148c/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Waiting until timeout for monitored process [2024-11-28 05:15:31,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:15:31,342 INFO L256 TraceCheckSpWp]: Trace formula consists of 262 conjuncts, 96 conjuncts are in the unsatisfiable core [2024-11-28 05:15:31,348 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 05:15:31,598 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 05:15:31,856 INFO L349 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2024-11-28 05:15:31,856 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 19 treesize of output 27 [2024-11-28 05:15:32,568 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-28 05:15:32,602 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-28 05:15:32,832 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 11 [2024-11-28 05:15:32,863 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2024-11-28 05:15:33,545 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2024-11-28 05:15:33,606 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 46 treesize of output 37 [2024-11-28 05:15:33,894 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 05:15:33,898 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 05:15:33,903 INFO L349 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2024-11-28 05:15:33,903 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 21 [2024-11-28 05:15:33,998 INFO L349 Elim1Store]: treesize reduction 32, result has 34.7 percent of original size [2024-11-28 05:15:33,998 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 31 treesize of output 35 [2024-11-28 05:15:34,335 INFO L349 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2024-11-28 05:15:34,335 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 15 treesize of output 7 [2024-11-28 05:15:35,212 INFO L349 Elim1Store]: treesize reduction 44, result has 38.0 percent of original size [2024-11-28 05:15:35,212 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 23 treesize of output 33 [2024-11-28 05:15:36,375 INFO L349 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2024-11-28 05:15:36,376 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 86 treesize of output 66 [2024-11-28 05:15:36,541 INFO L349 Elim1Store]: treesize reduction 24, result has 44.2 percent of original size [2024-11-28 05:15:36,541 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 23 treesize of output 29 [2024-11-28 05:15:38,994 INFO L349 Elim1Store]: treesize reduction 72, result has 35.1 percent of original size [2024-11-28 05:15:38,995 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 15 disjoint index pairs (out of 28 index pairs), introduced 9 new quantified variables, introduced 27 case distinctions, treesize of input 180 treesize of output 156 [2024-11-28 05:15:39,413 INFO L349 Elim1Store]: treesize reduction 52, result has 53.6 percent of original size [2024-11-28 05:15:39,414 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 140 treesize of output 181 [2024-11-28 05:15:43,839 INFO L349 Elim1Store]: treesize reduction 15, result has 37.5 percent of original size [2024-11-28 05:15:43,840 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 9 [2024-11-28 05:15:50,849 INFO L349 Elim1Store]: treesize reduction 125, result has 35.2 percent of original size [2024-11-28 05:15:50,850 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 9 select indices, 9 select index equivalence classes, 3 disjoint index pairs (out of 36 index pairs), introduced 10 new quantified variables, introduced 36 case distinctions, treesize of input 295 treesize of output 243 [2024-11-28 05:15:51,249 INFO L349 Elim1Store]: treesize reduction 6, result has 90.2 percent of original size [2024-11-28 05:15:51,250 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 157 treesize of output 203 [2024-11-28 05:15:51,306 INFO L349 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2024-11-28 05:15:51,306 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 1 case distinctions, treesize of input 111 treesize of output 93 [2024-11-28 05:15:53,415 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 05:15:53,415 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 05:15:53,416 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 05:15:53,416 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1518132585] [2024-11-28 05:15:53,416 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1518132585] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 05:15:53,416 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 05:15:53,416 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [30] imperfect sequences [] total 30 [2024-11-28 05:15:53,416 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [231874361] [2024-11-28 05:15:53,416 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 05:15:53,416 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2024-11-28 05:15:53,416 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 05:15:53,417 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2024-11-28 05:15:53,417 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=908, Unknown=0, NotChecked=0, Total=992 [2024-11-28 05:15:53,417 INFO L87 Difference]: Start difference. First operand 382 states and 463 transitions. Second operand has 32 states, 28 states have (on average 1.5714285714285714) internal successors, (44), 23 states have internal predecessors, (44), 5 states have call successors, (5), 5 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-28 05:16:22,322 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 05:16:22,322 INFO L93 Difference]: Finished difference Result 442 states and 513 transitions. [2024-11-28 05:16:22,322 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2024-11-28 05:16:22,323 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 28 states have (on average 1.5714285714285714) internal successors, (44), 23 states have internal predecessors, (44), 5 states have call successors, (5), 5 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 52 [2024-11-28 05:16:22,323 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 05:16:22,324 INFO L225 Difference]: With dead ends: 442 [2024-11-28 05:16:22,324 INFO L226 Difference]: Without dead ends: 442 [2024-11-28 05:16:22,325 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 774 ImplicationChecksByTransitivity, 18.8s TimeCoverageRelationStatistics Valid=326, Invalid=3456, Unknown=0, NotChecked=0, Total=3782 [2024-11-28 05:16:22,325 INFO L435 NwaCegarLoop]: 77 mSDtfsCounter, 369 mSDsluCounter, 1559 mSDsCounter, 0 mSdLazyCounter, 3139 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 15.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 370 SdHoareTripleChecker+Valid, 1636 SdHoareTripleChecker+Invalid, 3181 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 3139 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 17.1s IncrementalHoareTripleChecker+Time [2024-11-28 05:16:22,325 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [370 Valid, 1636 Invalid, 3181 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 3139 Invalid, 0 Unknown, 0 Unchecked, 17.1s Time] [2024-11-28 05:16:22,326 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 442 states. [2024-11-28 05:16:22,334 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 442 to 392. [2024-11-28 05:16:22,335 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 392 states, 309 states have (on average 1.4207119741100325) internal successors, (439), 359 states have internal predecessors, (439), 17 states have call successors, (17), 16 states have call predecessors, (17), 17 states have return successors, (21), 16 states have call predecessors, (21), 17 states have call successors, (21) [2024-11-28 05:16:22,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 392 states to 392 states and 477 transitions. [2024-11-28 05:16:22,336 INFO L78 Accepts]: Start accepts. Automaton has 392 states and 477 transitions. Word has length 52 [2024-11-28 05:16:22,337 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 05:16:22,337 INFO L471 AbstractCegarLoop]: Abstraction has 392 states and 477 transitions. [2024-11-28 05:16:22,337 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 28 states have (on average 1.5714285714285714) internal successors, (44), 23 states have internal predecessors, (44), 5 states have call successors, (5), 5 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-28 05:16:22,337 INFO L276 IsEmpty]: Start isEmpty. Operand 392 states and 477 transitions. [2024-11-28 05:16:22,338 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2024-11-28 05:16:22,338 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 05:16:22,338 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] [2024-11-28 05:16:22,353 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12537f27-287e-433a-b2d7-4c2e02ee148c/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Ended with exit code 0 [2024-11-28 05:16:22,538 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12537f27-287e-433a-b2d7-4c2e02ee148c/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:16:22,539 INFO L396 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr24REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [free_reportsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 77 more)] === [2024-11-28 05:16:22,539 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:16:22,539 INFO L85 PathProgramCache]: Analyzing trace with hash -1777858770, now seen corresponding path program 1 times [2024-11-28 05:16:22,539 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 05:16:22,540 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [609592301] [2024-11-28 05:16:22,540 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:16:22,540 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:16:22,540 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12537f27-287e-433a-b2d7-4c2e02ee148c/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 05:16:22,541 INFO L229 MonitoredProcess]: Starting monitored process 35 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12537f27-287e-433a-b2d7-4c2e02ee148c/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 05:16:22,543 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12537f27-287e-433a-b2d7-4c2e02ee148c/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Waiting until timeout for monitored process [2024-11-28 05:16:22,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:16:22,879 INFO L256 TraceCheckSpWp]: Trace formula consists of 341 conjuncts, 50 conjuncts are in the unsatisfiable core [2024-11-28 05:16:22,884 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 05:16:22,928 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 05:16:23,215 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-28 05:16:23,325 INFO L349 Elim1Store]: treesize reduction 36, result has 35.7 percent of original size [2024-11-28 05:16:23,325 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 25 treesize of output 28 [2024-11-28 05:16:23,394 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 5 [2024-11-28 05:16:23,715 INFO L349 Elim1Store]: treesize reduction 36, result has 35.7 percent of original size [2024-11-28 05:16:23,715 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 25 treesize of output 28 [2024-11-28 05:16:23,947 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-28 05:16:24,008 INFO L349 Elim1Store]: treesize reduction 25, result has 43.2 percent of original size [2024-11-28 05:16:24,008 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 31 treesize of output 27 [2024-11-28 05:16:24,271 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 10 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 44 treesize of output 11 [2024-11-28 05:16:24,305 INFO L349 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2024-11-28 05:16:24,306 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 10 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 68 treesize of output 37 [2024-11-28 05:16:25,214 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2024-11-28 05:16:25,839 INFO L349 Elim1Store]: treesize reduction 16, result has 67.3 percent of original size [2024-11-28 05:16:25,840 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 5 new quantified variables, introduced 6 case distinctions, treesize of input 54 treesize of output 65 [2024-11-28 05:16:26,350 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 05:16:26,350 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 05:16:26,350 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 05:16:26,350 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [609592301] [2024-11-28 05:16:26,350 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [609592301] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 05:16:26,350 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 05:16:26,350 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2024-11-28 05:16:26,350 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1195903677] [2024-11-28 05:16:26,351 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 05:16:26,351 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-11-28 05:16:26,351 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 05:16:26,351 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-11-28 05:16:26,352 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=363, Unknown=0, NotChecked=0, Total=420 [2024-11-28 05:16:26,352 INFO L87 Difference]: Start difference. First operand 392 states and 477 transitions. Second operand has 21 states, 18 states have (on average 2.5555555555555554) internal successors, (46), 18 states have internal predecessors, (46), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-28 05:16:34,911 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 05:16:34,911 INFO L93 Difference]: Finished difference Result 403 states and 476 transitions. [2024-11-28 05:16:34,911 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-11-28 05:16:34,911 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 18 states have (on average 2.5555555555555554) internal successors, (46), 18 states have internal predecessors, (46), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 52 [2024-11-28 05:16:34,912 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 05:16:34,913 INFO L225 Difference]: With dead ends: 403 [2024-11-28 05:16:34,913 INFO L226 Difference]: Without dead ends: 403 [2024-11-28 05:16:34,914 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 32 SyntacticMatches, 1 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 310 ImplicationChecksByTransitivity, 3.7s TimeCoverageRelationStatistics Valid=244, Invalid=1478, Unknown=0, NotChecked=0, Total=1722 [2024-11-28 05:16:34,914 INFO L435 NwaCegarLoop]: 85 mSDtfsCounter, 580 mSDsluCounter, 810 mSDsCounter, 0 mSdLazyCounter, 1429 mSolverCounterSat, 75 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 580 SdHoareTripleChecker+Valid, 895 SdHoareTripleChecker+Invalid, 1504 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 75 IncrementalHoareTripleChecker+Valid, 1429 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.2s IncrementalHoareTripleChecker+Time [2024-11-28 05:16:34,914 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [580 Valid, 895 Invalid, 1504 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [75 Valid, 1429 Invalid, 0 Unknown, 0 Unchecked, 6.2s Time] [2024-11-28 05:16:34,915 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 403 states. [2024-11-28 05:16:34,920 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 403 to 390. [2024-11-28 05:16:34,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 390 states, 309 states have (on average 1.401294498381877) internal successors, (433), 357 states have internal predecessors, (433), 17 states have call successors, (17), 16 states have call predecessors, (17), 17 states have return successors, (21), 16 states have call predecessors, (21), 17 states have call successors, (21) [2024-11-28 05:16:34,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 390 states to 390 states and 471 transitions. [2024-11-28 05:16:34,922 INFO L78 Accepts]: Start accepts. Automaton has 390 states and 471 transitions. Word has length 52 [2024-11-28 05:16:34,922 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 05:16:34,922 INFO L471 AbstractCegarLoop]: Abstraction has 390 states and 471 transitions. [2024-11-28 05:16:34,922 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 18 states have (on average 2.5555555555555554) internal successors, (46), 18 states have internal predecessors, (46), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-28 05:16:34,923 INFO L276 IsEmpty]: Start isEmpty. Operand 390 states and 471 transitions. [2024-11-28 05:16:34,923 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2024-11-28 05:16:34,923 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 05:16:34,923 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] [2024-11-28 05:16:34,937 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12537f27-287e-433a-b2d7-4c2e02ee148c/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Ended with exit code 0 [2024-11-28 05:16:35,124 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12537f27-287e-433a-b2d7-4c2e02ee148c/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:16:35,124 INFO L396 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr25REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [free_reportsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 77 more)] === [2024-11-28 05:16:35,124 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:16:35,124 INFO L85 PathProgramCache]: Analyzing trace with hash -1777858769, now seen corresponding path program 1 times [2024-11-28 05:16:35,125 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 05:16:35,125 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1791477893] [2024-11-28 05:16:35,125 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:16:35,125 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:16:35,125 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12537f27-287e-433a-b2d7-4c2e02ee148c/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 05:16:35,126 INFO L229 MonitoredProcess]: Starting monitored process 36 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12537f27-287e-433a-b2d7-4c2e02ee148c/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 05:16:35,128 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12537f27-287e-433a-b2d7-4c2e02ee148c/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Waiting until timeout for monitored process [2024-11-28 05:16:35,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:16:35,444 INFO L256 TraceCheckSpWp]: Trace formula consists of 341 conjuncts, 74 conjuncts are in the unsatisfiable core [2024-11-28 05:16:35,450 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 05:16:35,479 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 05:16:35,493 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 05:16:35,888 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-28 05:16:35,897 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-28 05:16:35,987 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 05:16:35,988 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 18 treesize of output 13 [2024-11-28 05:16:36,168 INFO L349 Elim1Store]: treesize reduction 74, result has 29.5 percent of original size [2024-11-28 05:16:36,169 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 32 treesize of output 44 [2024-11-28 05:16:36,322 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 3 [2024-11-28 05:16:36,336 INFO L349 Elim1Store]: treesize reduction 13, result has 7.1 percent of original size [2024-11-28 05:16:36,336 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 11 [2024-11-28 05:16:36,845 INFO L349 Elim1Store]: treesize reduction 21, result has 44.7 percent of original size [2024-11-28 05:16:36,845 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 18 treesize of output 21 [2024-11-28 05:16:36,939 INFO L349 Elim1Store]: treesize reduction 26, result has 33.3 percent of original size [2024-11-28 05:16:36,939 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 24 treesize of output 26 [2024-11-28 05:16:37,416 INFO L349 Elim1Store]: treesize reduction 41, result has 26.8 percent of original size [2024-11-28 05:16:37,416 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 38 treesize of output 37 [2024-11-28 05:16:37,464 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 49 treesize of output 25 [2024-11-28 05:16:38,227 INFO L349 Elim1Store]: treesize reduction 240, result has 4.4 percent of original size [2024-11-28 05:16:38,228 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 10 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 93 treesize of output 46 [2024-11-28 05:16:38,243 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 11 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 85 treesize of output 50 [2024-11-28 05:16:38,275 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 7 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 29 [2024-11-28 05:16:40,231 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 13 [2024-11-28 05:16:40,813 INFO L349 Elim1Store]: treesize reduction 15, result has 6.3 percent of original size [2024-11-28 05:16:40,813 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 72 treesize of output 31 [2024-11-28 05:16:40,832 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-28 05:16:41,240 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 05:16:41,241 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 05:16:41,241 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 05:16:41,241 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1791477893] [2024-11-28 05:16:41,241 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1791477893] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 05:16:41,241 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 05:16:41,241 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [23] imperfect sequences [] total 23 [2024-11-28 05:16:41,241 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1939170601] [2024-11-28 05:16:41,241 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 05:16:41,242 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2024-11-28 05:16:41,242 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 05:16:41,242 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2024-11-28 05:16:41,243 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=499, Unknown=0, NotChecked=0, Total=552 [2024-11-28 05:16:41,243 INFO L87 Difference]: Start difference. First operand 390 states and 471 transitions. Second operand has 24 states, 22 states have (on average 2.090909090909091) internal successors, (46), 21 states have internal predecessors, (46), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-28 05:16:45,947 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 05:16:50,074 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-28 05:17:04,157 WARN L539 Checker$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 05:17:08,457 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-28 05:17:16,199 WARN L539 Checker$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 05:17:20,944 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-28 05:17:25,492 WARN L539 Checker$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 05:17:30,223 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-28 05:17:34,625 WARN L539 Checker$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 05:17:39,071 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-28 05:17:44,475 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-28 05:17:45,673 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 05:17:45,673 INFO L93 Difference]: Finished difference Result 484 states and 565 transitions. [2024-11-28 05:17:45,674 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2024-11-28 05:17:45,674 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 22 states have (on average 2.090909090909091) internal successors, (46), 21 states have internal predecessors, (46), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 52 [2024-11-28 05:17:45,675 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 05:17:45,676 INFO L225 Difference]: With dead ends: 484 [2024-11-28 05:17:45,676 INFO L226 Difference]: Without dead ends: 484 [2024-11-28 05:17:45,677 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 28 SyntacticMatches, 1 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 268 ImplicationChecksByTransitivity, 8.1s TimeCoverageRelationStatistics Valid=202, Invalid=1604, Unknown=0, NotChecked=0, Total=1806 [2024-11-28 05:17:45,678 INFO L435 NwaCegarLoop]: 118 mSDtfsCounter, 374 mSDsluCounter, 1811 mSDsCounter, 0 mSdLazyCounter, 2670 mSolverCounterSat, 21 mSolverCounterUnsat, 11 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 57.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 374 SdHoareTripleChecker+Valid, 1929 SdHoareTripleChecker+Invalid, 2702 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 2670 IncrementalHoareTripleChecker+Invalid, 11 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 58.9s IncrementalHoareTripleChecker+Time [2024-11-28 05:17:45,678 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [374 Valid, 1929 Invalid, 2702 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 2670 Invalid, 11 Unknown, 0 Unchecked, 58.9s Time] [2024-11-28 05:17:45,679 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 484 states. [2024-11-28 05:17:45,686 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 484 to 430. [2024-11-28 05:17:45,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 430 states, 348 states have (on average 1.382183908045977) internal successors, (481), 396 states have internal predecessors, (481), 17 states have call successors, (17), 17 states have call predecessors, (17), 18 states have return successors, (21), 16 states have call predecessors, (21), 17 states have call successors, (21) [2024-11-28 05:17:45,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 430 states to 430 states and 519 transitions. [2024-11-28 05:17:45,691 INFO L78 Accepts]: Start accepts. Automaton has 430 states and 519 transitions. Word has length 52 [2024-11-28 05:17:45,692 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 05:17:45,692 INFO L471 AbstractCegarLoop]: Abstraction has 430 states and 519 transitions. [2024-11-28 05:17:45,692 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 22 states have (on average 2.090909090909091) internal successors, (46), 21 states have internal predecessors, (46), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-28 05:17:45,692 INFO L276 IsEmpty]: Start isEmpty. Operand 430 states and 519 transitions. [2024-11-28 05:17:45,693 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2024-11-28 05:17:45,693 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 05:17:45,694 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] [2024-11-28 05:17:45,714 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12537f27-287e-433a-b2d7-4c2e02ee148c/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Ended with exit code 0 [2024-11-28 05:17:45,894 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12537f27-287e-433a-b2d7-4c2e02ee148c/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:17:45,894 INFO L396 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr25REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [free_reportsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 77 more)] === [2024-11-28 05:17:45,895 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:17:45,895 INFO L85 PathProgramCache]: Analyzing trace with hash -1839898383, now seen corresponding path program 1 times [2024-11-28 05:17:45,895 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 05:17:45,895 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1946165922] [2024-11-28 05:17:45,896 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:17:45,896 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:17:45,896 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12537f27-287e-433a-b2d7-4c2e02ee148c/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 05:17:45,898 INFO L229 MonitoredProcess]: Starting monitored process 37 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12537f27-287e-433a-b2d7-4c2e02ee148c/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 05:17:45,899 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12537f27-287e-433a-b2d7-4c2e02ee148c/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Waiting until timeout for monitored process [2024-11-28 05:17:46,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:17:46,345 INFO L256 TraceCheckSpWp]: Trace formula consists of 341 conjuncts, 69 conjuncts are in the unsatisfiable core [2024-11-28 05:17:46,352 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 05:17:46,455 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 05:17:46,478 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 05:17:47,166 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-28 05:17:47,176 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-28 05:17:47,313 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 05:17:47,314 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 18 treesize of output 13 [2024-11-28 05:17:47,481 INFO L349 Elim1Store]: treesize reduction 74, result has 29.5 percent of original size [2024-11-28 05:17:47,481 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 32 treesize of output 44 [2024-11-28 05:17:47,646 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 3 [2024-11-28 05:17:47,663 INFO L349 Elim1Store]: treesize reduction 13, result has 7.1 percent of original size [2024-11-28 05:17:47,663 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 11 [2024-11-28 05:17:48,207 INFO L349 Elim1Store]: treesize reduction 21, result has 44.7 percent of original size [2024-11-28 05:17:48,208 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 18 treesize of output 21 [2024-11-28 05:17:48,335 INFO L349 Elim1Store]: treesize reduction 26, result has 33.3 percent of original size [2024-11-28 05:17:48,335 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 24 treesize of output 26 [2024-11-28 05:17:49,036 INFO L349 Elim1Store]: treesize reduction 29, result has 19.4 percent of original size [2024-11-28 05:17:49,036 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 30 treesize of output 32 [2024-11-28 05:17:49,087 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 21 [2024-11-28 05:17:49,545 INFO L349 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2024-11-28 05:17:49,545 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 10 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 73 treesize of output 34 [2024-11-28 05:17:49,566 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 05:17:49,574 INFO L349 Elim1Store]: treesize reduction 20, result has 4.8 percent of original size [2024-11-28 05:17:49,574 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 11 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 62 treesize of output 35 [2024-11-28 05:17:51,492 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-11-28 05:17:51,492 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 48 treesize of output 27 [2024-11-28 05:17:51,514 INFO L349 Elim1Store]: treesize reduction 16, result has 5.9 percent of original size [2024-11-28 05:17:51,514 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 22 treesize of output 10 [2024-11-28 05:17:52,021 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 05:17:52,021 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 05:17:52,021 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 05:17:52,021 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1946165922] [2024-11-28 05:17:52,022 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1946165922] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 05:17:52,022 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 05:17:52,022 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2024-11-28 05:17:52,022 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [889298202] [2024-11-28 05:17:52,022 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 05:17:52,022 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-11-28 05:17:52,022 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 05:17:52,023 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-11-28 05:17:52,023 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=455, Unknown=0, NotChecked=0, Total=506 [2024-11-28 05:17:52,024 INFO L87 Difference]: Start difference. First operand 430 states and 519 transitions. Second operand has 23 states, 20 states have (on average 2.3) internal successors, (46), 19 states have internal predecessors, (46), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-28 05:17:57,627 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-28 05:18:14,710 WARN L539 Checker$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 05:18:17,666 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 05:18:17,666 INFO L93 Difference]: Finished difference Result 477 states and 555 transitions. [2024-11-28 05:18:17,667 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2024-11-28 05:18:17,667 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 20 states have (on average 2.3) internal successors, (46), 19 states have internal predecessors, (46), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 52 [2024-11-28 05:18:17,667 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 05:18:17,669 INFO L225 Difference]: With dead ends: 477 [2024-11-28 05:18:17,669 INFO L226 Difference]: Without dead ends: 477 [2024-11-28 05:18:17,669 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 29 SyntacticMatches, 1 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 349 ImplicationChecksByTransitivity, 8.1s TimeCoverageRelationStatistics Valid=226, Invalid=1754, Unknown=0, NotChecked=0, Total=1980 [2024-11-28 05:18:17,670 INFO L435 NwaCegarLoop]: 112 mSDtfsCounter, 501 mSDsluCounter, 1399 mSDsCounter, 0 mSdLazyCounter, 2031 mSolverCounterSat, 40 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 19.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 501 SdHoareTripleChecker+Valid, 1511 SdHoareTripleChecker+Invalid, 2074 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 2031 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 20.1s IncrementalHoareTripleChecker+Time [2024-11-28 05:18:17,670 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [501 Valid, 1511 Invalid, 2074 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 2031 Invalid, 3 Unknown, 0 Unchecked, 20.1s Time] [2024-11-28 05:18:17,670 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 477 states. [2024-11-28 05:18:17,675 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 477 to 430. [2024-11-28 05:18:17,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 430 states, 348 states have (on average 1.3764367816091954) internal successors, (479), 396 states have internal predecessors, (479), 17 states have call successors, (17), 17 states have call predecessors, (17), 18 states have return successors, (21), 16 states have call predecessors, (21), 17 states have call successors, (21) [2024-11-28 05:18:17,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 430 states to 430 states and 517 transitions. [2024-11-28 05:18:17,677 INFO L78 Accepts]: Start accepts. Automaton has 430 states and 517 transitions. Word has length 52 [2024-11-28 05:18:17,677 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 05:18:17,678 INFO L471 AbstractCegarLoop]: Abstraction has 430 states and 517 transitions. [2024-11-28 05:18:17,678 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 20 states have (on average 2.3) internal successors, (46), 19 states have internal predecessors, (46), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-28 05:18:17,678 INFO L276 IsEmpty]: Start isEmpty. Operand 430 states and 517 transitions. [2024-11-28 05:18:17,678 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2024-11-28 05:18:17,678 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 05:18:17,679 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] [2024-11-28 05:18:17,692 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12537f27-287e-433a-b2d7-4c2e02ee148c/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Ended with exit code 0 [2024-11-28 05:18:17,879 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 37 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12537f27-287e-433a-b2d7-4c2e02ee148c/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:18:17,879 INFO L396 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr47ASSERT_VIOLATIONMEMORY_FREE === [free_reportsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 77 more)] === [2024-11-28 05:18:17,880 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:18:17,880 INFO L85 PathProgramCache]: Analyzing trace with hash 2085144988, now seen corresponding path program 1 times [2024-11-28 05:18:17,880 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 05:18:17,880 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [129399937] [2024-11-28 05:18:17,880 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:18:17,880 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:18:17,881 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12537f27-287e-433a-b2d7-4c2e02ee148c/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 05:18:17,883 INFO L229 MonitoredProcess]: Starting monitored process 38 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12537f27-287e-433a-b2d7-4c2e02ee148c/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 05:18:17,885 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12537f27-287e-433a-b2d7-4c2e02ee148c/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Waiting until timeout for monitored process [2024-11-28 05:18:18,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:18:18,252 INFO L256 TraceCheckSpWp]: Trace formula consists of 262 conjuncts, 31 conjuncts are in the unsatisfiable core [2024-11-28 05:18:18,256 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 05:18:18,513 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-28 05:18:18,616 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2024-11-28 05:18:18,616 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 05:18:18,894 INFO L349 Elim1Store]: treesize reduction 13, result has 40.9 percent of original size [2024-11-28 05:18:18,894 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 16 treesize of output 15 [2024-11-28 05:18:18,918 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2024-11-28 05:18:19,130 INFO L349 Elim1Store]: treesize reduction 13, result has 40.9 percent of original size [2024-11-28 05:18:19,130 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 20 treesize of output 19 [2024-11-28 05:18:19,375 INFO L349 Elim1Store]: treesize reduction 15, result has 37.5 percent of original size [2024-11-28 05:18:19,375 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 9 [2024-11-28 05:18:19,875 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 05:18:19,875 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 05:18:19,876 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 05:18:19,876 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [129399937] [2024-11-28 05:18:19,876 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [129399937] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 05:18:19,876 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 05:18:19,876 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2024-11-28 05:18:19,876 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [503728093] [2024-11-28 05:18:19,876 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 05:18:19,877 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-28 05:18:19,877 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 05:18:19,877 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-28 05:18:19,877 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2024-11-28 05:18:19,878 INFO L87 Difference]: Start difference. First operand 430 states and 517 transitions. Second operand has 14 states, 12 states have (on average 3.8333333333333335) internal successors, (46), 13 states have internal predecessors, (46), 4 states have call successors, (4), 3 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2024-11-28 05:18:24,048 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 05:18:24,049 INFO L93 Difference]: Finished difference Result 461 states and 530 transitions. [2024-11-28 05:18:24,049 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-11-28 05:18:24,049 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 12 states have (on average 3.8333333333333335) internal successors, (46), 13 states have internal predecessors, (46), 4 states have call successors, (4), 3 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Word has length 54 [2024-11-28 05:18:24,050 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 05:18:24,051 INFO L225 Difference]: With dead ends: 461 [2024-11-28 05:18:24,051 INFO L226 Difference]: Without dead ends: 461 [2024-11-28 05:18:24,051 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 72 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=87, Invalid=419, Unknown=0, NotChecked=0, Total=506 [2024-11-28 05:18:24,052 INFO L435 NwaCegarLoop]: 124 mSDtfsCounter, 119 mSDsluCounter, 1068 mSDsCounter, 0 mSdLazyCounter, 865 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 120 SdHoareTripleChecker+Valid, 1192 SdHoareTripleChecker+Invalid, 894 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 865 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.6s IncrementalHoareTripleChecker+Time [2024-11-28 05:18:24,052 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [120 Valid, 1192 Invalid, 894 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 865 Invalid, 0 Unknown, 0 Unchecked, 3.6s Time] [2024-11-28 05:18:24,053 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 461 states. [2024-11-28 05:18:24,060 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 461 to 433. [2024-11-28 05:18:24,061 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 433 states, 351 states have (on average 1.3732193732193732) internal successors, (482), 398 states have internal predecessors, (482), 17 states have call successors, (17), 17 states have call predecessors, (17), 18 states have return successors, (21), 17 states have call predecessors, (21), 17 states have call successors, (21) [2024-11-28 05:18:24,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 433 states to 433 states and 520 transitions. [2024-11-28 05:18:24,063 INFO L78 Accepts]: Start accepts. Automaton has 433 states and 520 transitions. Word has length 54 [2024-11-28 05:18:24,063 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 05:18:24,063 INFO L471 AbstractCegarLoop]: Abstraction has 433 states and 520 transitions. [2024-11-28 05:18:24,063 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 12 states have (on average 3.8333333333333335) internal successors, (46), 13 states have internal predecessors, (46), 4 states have call successors, (4), 3 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2024-11-28 05:18:24,063 INFO L276 IsEmpty]: Start isEmpty. Operand 433 states and 520 transitions. [2024-11-28 05:18:24,064 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2024-11-28 05:18:24,064 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 05:18:24,065 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 05:18:24,080 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12537f27-287e-433a-b2d7-4c2e02ee148c/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Ended with exit code 0 [2024-11-28 05:18:24,265 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 38 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12537f27-287e-433a-b2d7-4c2e02ee148c/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:18:24,265 INFO L396 AbstractCegarLoop]: === Iteration 38 === Targeting ldv_list_delErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [free_reportsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 77 more)] === [2024-11-28 05:18:24,266 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:18:24,266 INFO L85 PathProgramCache]: Analyzing trace with hash 1023858957, now seen corresponding path program 1 times [2024-11-28 05:18:24,266 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 05:18:24,266 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [577759007] [2024-11-28 05:18:24,266 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:18:24,266 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:18:24,267 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12537f27-287e-433a-b2d7-4c2e02ee148c/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 05:18:24,269 INFO L229 MonitoredProcess]: Starting monitored process 39 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12537f27-287e-433a-b2d7-4c2e02ee148c/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 05:18:24,270 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12537f27-287e-433a-b2d7-4c2e02ee148c/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Waiting until timeout for monitored process [2024-11-28 05:18:24,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:18:24,673 INFO L256 TraceCheckSpWp]: Trace formula consists of 282 conjuncts, 90 conjuncts are in the unsatisfiable core [2024-11-28 05:18:24,680 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 05:18:24,922 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2024-11-28 05:18:25,112 INFO L349 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2024-11-28 05:18:25,112 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 19 treesize of output 27 [2024-11-28 05:18:25,763 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-28 05:18:25,782 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-28 05:18:26,024 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2024-11-28 05:18:26,051 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 11 [2024-11-28 05:18:26,377 INFO L349 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2024-11-28 05:18:26,378 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 7 [2024-11-28 05:18:26,663 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 46 treesize of output 37 [2024-11-28 05:18:26,686 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2024-11-28 05:18:27,089 INFO L349 Elim1Store]: treesize reduction 98, result has 30.0 percent of original size [2024-11-28 05:18:27,089 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 7 case distinctions, treesize of input 39 treesize of output 60 [2024-11-28 05:18:27,202 INFO L349 Elim1Store]: treesize reduction 13, result has 7.1 percent of original size [2024-11-28 05:18:27,202 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 16 [2024-11-28 05:18:27,987 INFO L349 Elim1Store]: treesize reduction 32, result has 34.7 percent of original size [2024-11-28 05:18:27,988 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 31 treesize of output 35 [2024-11-28 05:18:28,509 INFO L349 Elim1Store]: treesize reduction 25, result has 16.7 percent of original size [2024-11-28 05:18:28,509 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 66 treesize of output 51 [2024-11-28 05:18:28,541 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 25 [2024-11-28 05:18:28,812 INFO L349 Elim1Store]: treesize reduction 25, result has 16.7 percent of original size [2024-11-28 05:18:28,812 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 66 treesize of output 51 [2024-11-28 05:18:28,830 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 25 [2024-11-28 05:18:30,561 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2024-11-28 05:18:31,781 INFO L349 Elim1Store]: treesize reduction 42, result has 6.7 percent of original size [2024-11-28 05:18:31,781 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 6 new quantified variables, introduced 6 case distinctions, treesize of input 65 treesize of output 30 [2024-11-28 05:18:32,115 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 05:18:32,115 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 05:18:32,115 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 05:18:32,115 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [577759007] [2024-11-28 05:18:32,115 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [577759007] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 05:18:32,115 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 05:18:32,116 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [29] imperfect sequences [] total 29 [2024-11-28 05:18:32,116 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [309191291] [2024-11-28 05:18:32,116 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 05:18:32,116 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2024-11-28 05:18:32,116 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 05:18:32,117 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2024-11-28 05:18:32,117 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=845, Unknown=0, NotChecked=0, Total=930 [2024-11-28 05:18:32,117 INFO L87 Difference]: Start difference. First operand 433 states and 520 transitions. Second operand has 31 states, 28 states have (on average 1.6785714285714286) internal successors, (47), 22 states have internal predecessors, (47), 5 states have call successors, (5), 5 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-28 05:18:53,163 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 05:18:53,163 INFO L93 Difference]: Finished difference Result 504 states and 560 transitions. [2024-11-28 05:18:53,163 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2024-11-28 05:18:53,164 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 28 states have (on average 1.6785714285714286) internal successors, (47), 22 states have internal predecessors, (47), 5 states have call successors, (5), 5 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 55 [2024-11-28 05:18:53,164 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 05:18:53,165 INFO L225 Difference]: With dead ends: 504 [2024-11-28 05:18:53,165 INFO L226 Difference]: Without dead ends: 504 [2024-11-28 05:18:53,166 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 752 ImplicationChecksByTransitivity, 9.9s TimeCoverageRelationStatistics Valid=324, Invalid=3098, Unknown=0, NotChecked=0, Total=3422 [2024-11-28 05:18:53,166 INFO L435 NwaCegarLoop]: 89 mSDtfsCounter, 578 mSDsluCounter, 1793 mSDsCounter, 0 mSdLazyCounter, 3159 mSolverCounterSat, 56 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 580 SdHoareTripleChecker+Valid, 1882 SdHoareTripleChecker+Invalid, 3215 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 3159 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14.8s IncrementalHoareTripleChecker+Time [2024-11-28 05:18:53,166 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [580 Valid, 1882 Invalid, 3215 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [56 Valid, 3159 Invalid, 0 Unknown, 0 Unchecked, 14.8s Time] [2024-11-28 05:18:53,167 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 504 states. [2024-11-28 05:18:53,173 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 504 to 433. [2024-11-28 05:18:53,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 433 states, 351 states have (on average 1.3675213675213675) internal successors, (480), 398 states have internal predecessors, (480), 17 states have call successors, (17), 17 states have call predecessors, (17), 18 states have return successors, (21), 17 states have call predecessors, (21), 17 states have call successors, (21) [2024-11-28 05:18:53,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 433 states to 433 states and 518 transitions. [2024-11-28 05:18:53,175 INFO L78 Accepts]: Start accepts. Automaton has 433 states and 518 transitions. Word has length 55 [2024-11-28 05:18:53,175 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 05:18:53,175 INFO L471 AbstractCegarLoop]: Abstraction has 433 states and 518 transitions. [2024-11-28 05:18:53,176 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 28 states have (on average 1.6785714285714286) internal successors, (47), 22 states have internal predecessors, (47), 5 states have call successors, (5), 5 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-28 05:18:53,176 INFO L276 IsEmpty]: Start isEmpty. Operand 433 states and 518 transitions. [2024-11-28 05:18:53,176 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2024-11-28 05:18:53,176 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 05:18:53,176 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 05:18:53,186 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12537f27-287e-433a-b2d7-4c2e02ee148c/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Ended with exit code 0 [2024-11-28 05:18:53,377 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 39 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12537f27-287e-433a-b2d7-4c2e02ee148c/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:18:53,377 INFO L396 AbstractCegarLoop]: === Iteration 39 === Targeting ldv_list_delErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [free_reportsErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, free_reportsErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 77 more)] === [2024-11-28 05:18:53,377 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:18:53,377 INFO L85 PathProgramCache]: Analyzing trace with hash 1023858958, now seen corresponding path program 1 times [2024-11-28 05:18:53,378 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 05:18:53,378 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1896718320] [2024-11-28 05:18:53,378 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:18:53,378 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:18:53,378 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12537f27-287e-433a-b2d7-4c2e02ee148c/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 05:18:53,380 INFO L229 MonitoredProcess]: Starting monitored process 40 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12537f27-287e-433a-b2d7-4c2e02ee148c/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 05:18:53,382 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_12537f27-287e-433a-b2d7-4c2e02ee148c/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Waiting until timeout for monitored process [2024-11-28 05:18:53,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:18:53,773 INFO L256 TraceCheckSpWp]: Trace formula consists of 282 conjuncts, 100 conjuncts are in the unsatisfiable core [2024-11-28 05:18:53,780 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 05:18:53,971 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 05:18:54,158 INFO L349 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2024-11-28 05:18:54,158 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 19 treesize of output 27 [2024-11-28 05:18:54,766 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-28 05:18:54,798 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-28 05:18:55,029 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 11 [2024-11-28 05:18:55,046 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2024-11-28 05:18:55,707 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2024-11-28 05:18:55,819 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 46 treesize of output 37 [2024-11-28 05:18:56,134 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 05:18:56,138 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 05:18:56,143 INFO L349 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2024-11-28 05:18:56,143 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 21 [2024-11-28 05:18:56,264 INFO L349 Elim1Store]: treesize reduction 32, result has 34.7 percent of original size [2024-11-28 05:18:56,264 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 31 treesize of output 35 [2024-11-28 05:18:56,526 INFO L349 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2024-11-28 05:18:56,526 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 15 treesize of output 7 [2024-11-28 05:18:57,347 INFO L349 Elim1Store]: treesize reduction 44, result has 38.0 percent of original size [2024-11-28 05:18:57,348 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 23 treesize of output 33 [2024-11-28 05:18:58,513 INFO L349 Elim1Store]: treesize reduction 32, result has 37.3 percent of original size [2024-11-28 05:18:58,513 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 83 treesize of output 72 [2024-11-28 05:18:58,642 INFO L349 Elim1Store]: treesize reduction 28, result has 45.1 percent of original size [2024-11-28 05:18:58,642 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 25 treesize of output 33 [2024-11-28 05:18:58,651 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2024-11-28 05:18:58,703 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2024-11-28 05:18:58,740 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 51 treesize of output 35 [2024-11-28 05:19:00,350 INFO L349 Elim1Store]: treesize reduction 36, result has 59.1 percent of original size [2024-11-28 05:19:00,351 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 140 treesize of output 154 [2024-11-28 05:19:00,754 INFO L349 Elim1Store]: treesize reduction 40, result has 60.0 percent of original size [2024-11-28 05:19:00,754 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 117 treesize of output 160 [2024-11-28 05:19:04,244 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2024-11-28 05:19:04,989 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 51 treesize of output 35 [2024-11-28 05:19:05,130 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 51 treesize of output 35 [2024-11-28 05:19:07,454 INFO L349 Elim1Store]: treesize reduction 15, result has 37.5 percent of original size [2024-11-28 05:19:07,454 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 9 [2024-11-28 05:19:13,942 INFO L349 Elim1Store]: treesize reduction 10, result has 91.5 percent of original size [2024-11-28 05:19:13,942 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 216 treesize of output 308