./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test1-2.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_fac2c519-6114-494f-b673-46e60df3294e/bin/uautomizer-verify-aQ6SnzHsRB/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fac2c519-6114-494f-b673-46e60df3294e/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_fac2c519-6114-494f-b673-46e60df3294e/bin/uautomizer-verify-aQ6SnzHsRB/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fac2c519-6114-494f-b673-46e60df3294e/bin/uautomizer-verify-aQ6SnzHsRB/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test1-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fac2c519-6114-494f-b673-46e60df3294e/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_fac2c519-6114-494f-b673-46e60df3294e/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 7f552e336cb6eb3ea16ba25a84411e1d0c8dcfaa2b088c21df87ffefed1a84a7 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-11-28 04:28:54,468 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-28 04:28:54,541 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fac2c519-6114-494f-b673-46e60df3294e/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2024-11-28 04:28:54,547 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-28 04:28:54,548 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-28 04:28:54,579 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-28 04:28:54,580 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-28 04:28:54,580 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-28 04:28:54,580 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-28 04:28:54,581 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-28 04:28:54,581 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-28 04:28:54,581 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-28 04:28:54,581 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-28 04:28:54,582 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-28 04:28:54,582 INFO L153 SettingsManager]: * Use SBE=true [2024-11-28 04:28:54,582 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-28 04:28:54,582 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-28 04:28:54,583 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-28 04:28:54,586 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-28 04:28:54,586 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-28 04:28:54,587 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-11-28 04:28:54,587 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-11-28 04:28:54,587 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-11-28 04:28:54,587 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-28 04:28:54,587 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-28 04:28:54,587 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-28 04:28:54,587 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-28 04:28:54,587 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-28 04:28:54,587 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-28 04:28:54,588 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-28 04:28:54,588 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 04:28:54,588 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 04:28:54,588 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 04:28:54,589 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 04:28:54,589 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-28 04:28:54,589 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 04:28:54,589 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 04:28:54,589 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 04:28:54,590 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 04:28:54,590 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-28 04:28:54,590 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-28 04:28:54,590 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-28 04:28:54,590 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-28 04:28:54,590 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-28 04:28:54,591 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-28 04:28:54,591 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-28 04:28:54,591 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-28 04:28:54,591 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_fac2c519-6114-494f-b673-46e60df3294e/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 -> 7f552e336cb6eb3ea16ba25a84411e1d0c8dcfaa2b088c21df87ffefed1a84a7 [2024-11-28 04:28:54,936 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-28 04:28:54,949 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-28 04:28:54,953 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-28 04:28:54,956 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-28 04:28:54,956 INFO L274 PluginConnector]: CDTParser initialized [2024-11-28 04:28:54,958 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fac2c519-6114-494f-b673-46e60df3294e/bin/uautomizer-verify-aQ6SnzHsRB/../../sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test1-2.i [2024-11-28 04:28:58,450 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fac2c519-6114-494f-b673-46e60df3294e/bin/uautomizer-verify-aQ6SnzHsRB/data/160887cfd/0158b99c000f493e8b269be89cc1d4be/FLAG6f6de819d [2024-11-28 04:28:58,864 INFO L384 CDTParser]: Found 1 translation units. [2024-11-28 04:28:58,865 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fac2c519-6114-494f-b673-46e60df3294e/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test1-2.i [2024-11-28 04:28:58,899 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fac2c519-6114-494f-b673-46e60df3294e/bin/uautomizer-verify-aQ6SnzHsRB/data/160887cfd/0158b99c000f493e8b269be89cc1d4be/FLAG6f6de819d [2024-11-28 04:28:59,019 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fac2c519-6114-494f-b673-46e60df3294e/bin/uautomizer-verify-aQ6SnzHsRB/data/160887cfd/0158b99c000f493e8b269be89cc1d4be [2024-11-28 04:28:59,022 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-28 04:28:59,024 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-28 04:28:59,025 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-28 04:28:59,026 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-28 04:28:59,031 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-28 04:28:59,032 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 04:28:59" (1/1) ... [2024-11-28 04:28:59,034 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3a2cc274 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:28:59, skipping insertion in model container [2024-11-28 04:28:59,034 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 04:28:59" (1/1) ... [2024-11-28 04:28:59,087 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-28 04:28:59,615 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 04:28:59,665 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 04:28:59,673 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 04:28:59,684 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-28 04:28:59,692 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 04:28:59,720 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-28 04:28:59,722 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 04:28:59,728 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 04:28:59,732 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 04:28:59,733 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 04:28:59,734 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 04:28:59,740 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 04:28:59,744 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 04:28:59,758 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 04:28:59,759 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@301c1a0c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:28:59, skipping insertion in model container [2024-11-28 04:28:59,759 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-28 04:28:59,759 INFO L186 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2024-11-28 04:28:59,761 INFO L158 Benchmark]: Toolchain (without parser) took 736.87ms. Allocated memory is still 117.4MB. Free memory was 90.9MB in the beginning and 73.3MB in the end (delta: 17.6MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-11-28 04:28:59,762 INFO L158 Benchmark]: CDTParser took 0.45ms. Allocated memory is still 117.4MB. Free memory is still 74.5MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-28 04:28:59,762 INFO L158 Benchmark]: CACSL2BoogieTranslator took 734.00ms. Allocated memory is still 117.4MB. Free memory was 90.6MB in the beginning and 73.3MB in the end (delta: 17.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-11-28 04:28:59,763 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.45ms. Allocated memory is still 117.4MB. Free memory is still 74.5MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 734.00ms. Allocated memory is still 117.4MB. Free memory was 90.6MB in the beginning and 73.3MB in the end (delta: 17.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 764]: 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_fac2c519-6114-494f-b673-46e60df3294e/bin/uautomizer-verify-aQ6SnzHsRB/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fac2c519-6114-494f-b673-46e60df3294e/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_fac2c519-6114-494f-b673-46e60df3294e/bin/uautomizer-verify-aQ6SnzHsRB/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fac2c519-6114-494f-b673-46e60df3294e/bin/uautomizer-verify-aQ6SnzHsRB/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test1-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fac2c519-6114-494f-b673-46e60df3294e/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_fac2c519-6114-494f-b673-46e60df3294e/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 7f552e336cb6eb3ea16ba25a84411e1d0c8dcfaa2b088c21df87ffefed1a84a7 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-11-28 04:29:02,624 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-28 04:29:02,761 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fac2c519-6114-494f-b673-46e60df3294e/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2024-11-28 04:29:02,768 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-28 04:29:02,768 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-28 04:29:02,805 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-28 04:29:02,806 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-28 04:29:02,806 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-28 04:29:02,807 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-28 04:29:02,807 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-28 04:29:02,809 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-28 04:29:02,809 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-28 04:29:02,810 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-28 04:29:02,811 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-28 04:29:02,811 INFO L153 SettingsManager]: * Use SBE=true [2024-11-28 04:29:02,811 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-28 04:29:02,813 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-28 04:29:02,813 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-28 04:29:02,813 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-28 04:29:02,813 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-28 04:29:02,813 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-11-28 04:29:02,813 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-11-28 04:29:02,813 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-11-28 04:29:02,814 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-28 04:29:02,814 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-28 04:29:02,814 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2024-11-28 04:29:02,814 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2024-11-28 04:29:02,814 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-28 04:29:02,814 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-28 04:29:02,814 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-28 04:29:02,814 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-28 04:29:02,814 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-28 04:29:02,814 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 04:29:02,814 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 04:29:02,815 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 04:29:02,815 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 04:29:02,815 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-28 04:29:02,815 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 04:29:02,816 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 04:29:02,816 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 04:29:02,817 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 04:29:02,817 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-28 04:29:02,817 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-28 04:29:02,817 INFO L153 SettingsManager]: * Trace refinement strategy=FOX [2024-11-28 04:29:02,818 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2024-11-28 04:29:02,818 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-28 04:29:02,818 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-28 04:29:02,818 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-28 04:29:02,819 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-28 04:29:02,819 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_fac2c519-6114-494f-b673-46e60df3294e/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 -> 7f552e336cb6eb3ea16ba25a84411e1d0c8dcfaa2b088c21df87ffefed1a84a7 [2024-11-28 04:29:03,239 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-28 04:29:03,249 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-28 04:29:03,252 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-28 04:29:03,254 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-28 04:29:03,254 INFO L274 PluginConnector]: CDTParser initialized [2024-11-28 04:29:03,256 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fac2c519-6114-494f-b673-46e60df3294e/bin/uautomizer-verify-aQ6SnzHsRB/../../sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test1-2.i [2024-11-28 04:29:06,541 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fac2c519-6114-494f-b673-46e60df3294e/bin/uautomizer-verify-aQ6SnzHsRB/data/3a052caaf/344ad9d1a34a445a8ab4a7509e4b502b/FLAGebae85303 [2024-11-28 04:29:07,067 INFO L384 CDTParser]: Found 1 translation units. [2024-11-28 04:29:07,068 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fac2c519-6114-494f-b673-46e60df3294e/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test1-2.i [2024-11-28 04:29:07,087 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fac2c519-6114-494f-b673-46e60df3294e/bin/uautomizer-verify-aQ6SnzHsRB/data/3a052caaf/344ad9d1a34a445a8ab4a7509e4b502b/FLAGebae85303 [2024-11-28 04:29:07,106 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fac2c519-6114-494f-b673-46e60df3294e/bin/uautomizer-verify-aQ6SnzHsRB/data/3a052caaf/344ad9d1a34a445a8ab4a7509e4b502b [2024-11-28 04:29:07,109 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-28 04:29:07,111 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-28 04:29:07,113 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-28 04:29:07,113 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-28 04:29:07,119 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-28 04:29:07,120 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 04:29:07" (1/1) ... [2024-11-28 04:29:07,121 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6c937123 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:29:07, skipping insertion in model container [2024-11-28 04:29:07,121 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 04:29:07" (1/1) ... [2024-11-28 04:29:07,180 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-28 04:29:07,839 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 04:29:07,881 WARN L1063 CHandler]: saw a pointer cast to a type that we could not get a type size for, not adapting memory model [2024-11-28 04:29:07,886 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 04:29:07,893 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 04:29:07,904 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 04:29:07,926 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 04:29:07,927 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 04:29:07,932 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 04:29:07,934 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 04:29:07,936 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 04:29:07,937 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 04:29:07,945 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 04:29:07,951 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 04:29:07,968 INFO L197 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2024-11-28 04:29:07,986 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-28 04:29:08,061 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 04:29:08,096 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 04:29:08,100 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 04:29:08,105 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 04:29:08,113 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 04:29:08,127 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 04:29:08,128 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 04:29:08,132 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 04:29:08,133 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 04:29:08,134 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 04:29:08,135 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 04:29:08,141 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 04:29:08,144 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 04:29:08,149 INFO L200 MainTranslator]: Completed pre-run [2024-11-28 04:29:08,261 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 04:29:08,309 INFO L204 MainTranslator]: Completed translation [2024-11-28 04:29:08,310 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:29:08 WrapperNode [2024-11-28 04:29:08,310 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-28 04:29:08,311 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-28 04:29:08,312 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-28 04:29:08,312 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-28 04:29:08,320 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:29:08" (1/1) ... [2024-11-28 04:29:08,352 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:29:08" (1/1) ... [2024-11-28 04:29:08,402 INFO L138 Inliner]: procedures = 179, calls = 231, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 784 [2024-11-28 04:29:08,403 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-28 04:29:08,404 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-28 04:29:08,404 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-28 04:29:08,404 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-28 04:29:08,415 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:29:08" (1/1) ... [2024-11-28 04:29:08,415 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:29:08" (1/1) ... [2024-11-28 04:29:08,425 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:29:08" (1/1) ... [2024-11-28 04:29:08,532 INFO L175 MemorySlicer]: Split 206 memory accesses to 2 slices as follows [204, 2]. 99 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [0, 2]. The 50 writes are split as follows [50, 0]. [2024-11-28 04:29:08,533 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:29:08" (1/1) ... [2024-11-28 04:29:08,533 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:29:08" (1/1) ... [2024-11-28 04:29:08,610 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:29:08" (1/1) ... [2024-11-28 04:29:08,617 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:29:08" (1/1) ... [2024-11-28 04:29:08,634 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:29:08" (1/1) ... [2024-11-28 04:29:08,643 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:29:08" (1/1) ... [2024-11-28 04:29:08,649 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:29:08" (1/1) ... [2024-11-28 04:29:08,663 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-28 04:29:08,668 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-28 04:29:08,668 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-28 04:29:08,668 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-28 04:29:08,669 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:29:08" (1/1) ... [2024-11-28 04:29:08,679 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 04:29:08,703 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fac2c519-6114-494f-b673-46e60df3294e/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:29:08,719 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fac2c519-6114-494f-b673-46e60df3294e/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-28 04:29:08,724 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fac2c519-6114-494f-b673-46e60df3294e/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-28 04:29:08,759 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#0 [2024-11-28 04:29:08,760 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#1 [2024-11-28 04:29:08,760 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#0 [2024-11-28 04:29:08,760 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#1 [2024-11-28 04:29:08,760 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-11-28 04:29:08,760 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-11-28 04:29:08,761 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#0 [2024-11-28 04:29:08,761 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#1 [2024-11-28 04:29:08,761 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#0 [2024-11-28 04:29:08,761 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#1 [2024-11-28 04:29:08,761 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-28 04:29:08,761 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-28 04:29:08,762 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2024-11-28 04:29:08,762 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2024-11-28 04:29:08,762 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2024-11-28 04:29:08,762 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2024-11-28 04:29:08,762 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-28 04:29:08,762 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#0 [2024-11-28 04:29:08,762 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#1 [2024-11-28 04:29:08,763 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2024-11-28 04:29:08,763 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#1 [2024-11-28 04:29:08,763 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-28 04:29:08,763 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-28 04:29:09,071 INFO L234 CfgBuilder]: Building ICFG [2024-11-28 04:29:09,074 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-28 04:29:09,078 WARN L773 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2024-11-28 04:29:09,158 WARN L773 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2024-11-28 04:29:13,646 INFO L? ?]: Removed 906 outVars from TransFormulas that were not future-live. [2024-11-28 04:29:13,646 INFO L283 CfgBuilder]: Performing block encoding [2024-11-28 04:29:13,705 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-28 04:29:13,710 INFO L312 CfgBuilder]: Removed 23 assume(true) statements. [2024-11-28 04:29:13,711 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 04:29:13 BoogieIcfgContainer [2024-11-28 04:29:13,711 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-28 04:29:13,715 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-28 04:29:13,715 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-28 04:29:13,722 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-28 04:29:13,722 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 04:29:07" (1/3) ... [2024-11-28 04:29:13,723 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4959a00c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 04:29:13, skipping insertion in model container [2024-11-28 04:29:13,724 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:29:08" (2/3) ... [2024-11-28 04:29:13,724 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4959a00c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 04:29:13, skipping insertion in model container [2024-11-28 04:29:13,724 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 04:29:13" (3/3) ... [2024-11-28 04:29:13,725 INFO L128 eAbstractionObserver]: Analyzing ICFG uthash_SAX_test1-2.i [2024-11-28 04:29:13,749 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-28 04:29:13,752 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG uthash_SAX_test1-2.i that has 4 procedures, 863 locations, 1 initial locations, 25 loop locations, and 425 error locations. [2024-11-28 04:29:13,838 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-28 04:29:13,858 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;@6d224955, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-28 04:29:13,860 INFO L334 AbstractCegarLoop]: Starting to check reachability of 425 error locations. [2024-11-28 04:29:13,870 INFO L276 IsEmpty]: Start isEmpty. Operand has 858 states, 420 states have (on average 2.2261904761904763) internal successors, (935), 852 states have internal predecessors, (935), 13 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 4 states have call predecessors, (13), 13 states have call successors, (13) [2024-11-28 04:29:13,879 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2024-11-28 04:29:13,880 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:29:13,880 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2024-11-28 04:29:13,882 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 422 more)] === [2024-11-28 04:29:13,889 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:29:13,890 INFO L85 PathProgramCache]: Analyzing trace with hash 1422103276, now seen corresponding path program 1 times [2024-11-28 04:29:13,907 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 04:29:13,908 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [833969936] [2024-11-28 04:29:13,908 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:29:13,909 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:29:13,910 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fac2c519-6114-494f-b673-46e60df3294e/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:29:13,914 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fac2c519-6114-494f-b673-46e60df3294e/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:29:13,917 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fac2c519-6114-494f-b673-46e60df3294e/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-28 04:29:14,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:29:14,147 INFO L256 TraceCheckSpWp]: Trace formula consists of 27 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-11-28 04:29:14,152 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:29:14,164 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:29:14,164 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 04:29:14,165 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 04:29:14,165 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [833969936] [2024-11-28 04:29:14,166 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [833969936] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:29:14,166 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:29:14,167 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-28 04:29:14,169 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [582613238] [2024-11-28 04:29:14,170 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:29:14,175 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-28 04:29:14,175 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 04:29:14,207 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-28 04:29:14,207 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-28 04:29:14,212 INFO L87 Difference]: Start difference. First operand has 858 states, 420 states have (on average 2.2261904761904763) internal successors, (935), 852 states have internal predecessors, (935), 13 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 4 states have call predecessors, (13), 13 states have call successors, (13) Second operand has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:29:14,328 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:29:14,328 INFO L93 Difference]: Finished difference Result 848 states and 905 transitions. [2024-11-28 04:29:14,329 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-28 04:29:14,331 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2024-11-28 04:29:14,331 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:29:14,354 INFO L225 Difference]: With dead ends: 848 [2024-11-28 04:29:14,354 INFO L226 Difference]: Without dead ends: 846 [2024-11-28 04:29:14,357 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-28 04:29:14,361 INFO L435 NwaCegarLoop]: 905 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 905 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 04:29:14,365 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 905 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 04:29:14,386 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 846 states. [2024-11-28 04:29:14,462 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 846 to 846. [2024-11-28 04:29:14,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 846 states, 414 states have (on average 2.1183574879227054) internal successors, (877), 840 states have internal predecessors, (877), 13 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 4 states have call predecessors, (13), 13 states have call successors, (13) [2024-11-28 04:29:14,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 846 states to 846 states and 903 transitions. [2024-11-28 04:29:14,480 INFO L78 Accepts]: Start accepts. Automaton has 846 states and 903 transitions. Word has length 6 [2024-11-28 04:29:14,480 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:29:14,480 INFO L471 AbstractCegarLoop]: Abstraction has 846 states and 903 transitions. [2024-11-28 04:29:14,481 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:29:14,481 INFO L276 IsEmpty]: Start isEmpty. Operand 846 states and 903 transitions. [2024-11-28 04:29:14,481 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2024-11-28 04:29:14,481 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:29:14,482 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2024-11-28 04:29:14,492 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fac2c519-6114-494f-b673-46e60df3294e/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-28 04:29:14,686 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fac2c519-6114-494f-b673-46e60df3294e/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:29:14,687 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 422 more)] === [2024-11-28 04:29:14,688 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:29:14,689 INFO L85 PathProgramCache]: Analyzing trace with hash 1422103338, now seen corresponding path program 1 times [2024-11-28 04:29:14,689 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 04:29:14,689 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1223876541] [2024-11-28 04:29:14,689 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:29:14,689 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:29:14,689 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fac2c519-6114-494f-b673-46e60df3294e/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:29:14,693 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fac2c519-6114-494f-b673-46e60df3294e/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:29:14,695 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fac2c519-6114-494f-b673-46e60df3294e/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-28 04:29:14,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:29:14,857 INFO L256 TraceCheckSpWp]: Trace formula consists of 27 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-28 04:29:14,859 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:29:14,901 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 04:29:14,932 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 04:29:14,932 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 04:29:14,933 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 04:29:14,933 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1223876541] [2024-11-28 04:29:14,933 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1223876541] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:29:14,933 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:29:14,933 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-28 04:29:14,933 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1283058627] [2024-11-28 04:29:14,933 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:29:14,934 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 04:29:14,935 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 04:29:14,938 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 04:29:14,938 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 04:29:14,939 INFO L87 Difference]: Start difference. First operand 846 states and 903 transitions. Second operand has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:29:17,228 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:29:17,229 INFO L93 Difference]: Finished difference Result 800 states and 858 transitions. [2024-11-28 04:29:17,229 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 04:29:17,230 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2024-11-28 04:29:17,230 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:29:17,237 INFO L225 Difference]: With dead ends: 800 [2024-11-28 04:29:17,237 INFO L226 Difference]: Without dead ends: 800 [2024-11-28 04:29:17,237 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 04:29:17,238 INFO L435 NwaCegarLoop]: 546 mSDtfsCounter, 536 mSDsluCounter, 116 mSDsCounter, 0 mSdLazyCounter, 497 mSolverCounterSat, 53 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 549 SdHoareTripleChecker+Valid, 662 SdHoareTripleChecker+Invalid, 550 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 497 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2024-11-28 04:29:17,239 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [549 Valid, 662 Invalid, 550 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [53 Valid, 497 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2024-11-28 04:29:17,242 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 800 states. [2024-11-28 04:29:17,267 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 800 to 797. [2024-11-28 04:29:17,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 797 states, 414 states have (on average 2.0) internal successors, (828), 791 states have internal predecessors, (828), 13 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 4 states have call predecessors, (13), 13 states have call successors, (13) [2024-11-28 04:29:17,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 797 states to 797 states and 854 transitions. [2024-11-28 04:29:17,274 INFO L78 Accepts]: Start accepts. Automaton has 797 states and 854 transitions. Word has length 6 [2024-11-28 04:29:17,274 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:29:17,274 INFO L471 AbstractCegarLoop]: Abstraction has 797 states and 854 transitions. [2024-11-28 04:29:17,274 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:29:17,275 INFO L276 IsEmpty]: Start isEmpty. Operand 797 states and 854 transitions. [2024-11-28 04:29:17,275 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2024-11-28 04:29:17,275 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:29:17,275 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2024-11-28 04:29:17,287 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fac2c519-6114-494f-b673-46e60df3294e/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-28 04:29:17,479 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fac2c519-6114-494f-b673-46e60df3294e/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:29:17,480 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 422 more)] === [2024-11-28 04:29:17,480 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:29:17,480 INFO L85 PathProgramCache]: Analyzing trace with hash 1422103339, now seen corresponding path program 1 times [2024-11-28 04:29:17,481 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 04:29:17,481 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [133941948] [2024-11-28 04:29:17,481 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:29:17,481 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:29:17,481 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fac2c519-6114-494f-b673-46e60df3294e/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:29:17,485 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fac2c519-6114-494f-b673-46e60df3294e/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:29:17,489 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fac2c519-6114-494f-b673-46e60df3294e/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-28 04:29:17,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:29:17,627 INFO L256 TraceCheckSpWp]: Trace formula consists of 27 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-28 04:29:17,629 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:29:17,646 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 04:29:17,677 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 04:29:17,677 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 04:29:17,678 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 04:29:17,678 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [133941948] [2024-11-28 04:29:17,678 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [133941948] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:29:17,678 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:29:17,679 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-28 04:29:17,679 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [93941404] [2024-11-28 04:29:17,679 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:29:17,679 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 04:29:17,679 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 04:29:17,680 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 04:29:17,680 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 04:29:17,681 INFO L87 Difference]: Start difference. First operand 797 states and 854 transitions. Second operand has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:29:20,014 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:29:20,014 INFO L93 Difference]: Finished difference Result 873 states and 934 transitions. [2024-11-28 04:29:20,014 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 04:29:20,015 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2024-11-28 04:29:20,015 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:29:20,019 INFO L225 Difference]: With dead ends: 873 [2024-11-28 04:29:20,019 INFO L226 Difference]: Without dead ends: 873 [2024-11-28 04:29:20,020 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 04:29:20,021 INFO L435 NwaCegarLoop]: 727 mSDtfsCounter, 264 mSDsluCounter, 325 mSDsCounter, 0 mSdLazyCounter, 462 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 264 SdHoareTripleChecker+Valid, 1052 SdHoareTripleChecker+Invalid, 475 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 462 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2024-11-28 04:29:20,021 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [264 Valid, 1052 Invalid, 475 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 462 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2024-11-28 04:29:20,024 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 873 states. [2024-11-28 04:29:20,047 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 873 to 824. [2024-11-28 04:29:20,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 824 states, 451 states have (on average 1.9778270509977827) internal successors, (892), 818 states have internal predecessors, (892), 13 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 4 states have call predecessors, (13), 13 states have call successors, (13) [2024-11-28 04:29:20,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 824 states to 824 states and 918 transitions. [2024-11-28 04:29:20,053 INFO L78 Accepts]: Start accepts. Automaton has 824 states and 918 transitions. Word has length 6 [2024-11-28 04:29:20,053 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:29:20,053 INFO L471 AbstractCegarLoop]: Abstraction has 824 states and 918 transitions. [2024-11-28 04:29:20,053 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:29:20,054 INFO L276 IsEmpty]: Start isEmpty. Operand 824 states and 918 transitions. [2024-11-28 04:29:20,054 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2024-11-28 04:29:20,054 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:29:20,054 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2024-11-28 04:29:20,065 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fac2c519-6114-494f-b673-46e60df3294e/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-28 04:29:20,255 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fac2c519-6114-494f-b673-46e60df3294e/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:29:20,255 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr312REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 422 more)] === [2024-11-28 04:29:20,255 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:29:20,255 INFO L85 PathProgramCache]: Analyzing trace with hash 1423050696, now seen corresponding path program 1 times [2024-11-28 04:29:20,256 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 04:29:20,256 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [642946684] [2024-11-28 04:29:20,256 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:29:20,256 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:29:20,256 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fac2c519-6114-494f-b673-46e60df3294e/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:29:20,258 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fac2c519-6114-494f-b673-46e60df3294e/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:29:20,275 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fac2c519-6114-494f-b673-46e60df3294e/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-28 04:29:20,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:29:20,390 INFO L256 TraceCheckSpWp]: Trace formula consists of 21 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-28 04:29:20,391 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:29:20,447 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 04:29:20,447 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 04:29:20,447 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 04:29:20,447 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [642946684] [2024-11-28 04:29:20,448 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [642946684] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:29:20,448 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:29:20,448 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-28 04:29:20,448 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1897512703] [2024-11-28 04:29:20,448 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:29:20,449 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 04:29:20,449 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 04:29:20,449 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 04:29:20,449 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 04:29:20,450 INFO L87 Difference]: Start difference. First operand 824 states and 918 transitions. Second operand has 4 states, 4 states have (on average 1.5) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:29:21,403 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:29:21,403 INFO L93 Difference]: Finished difference Result 1127 states and 1263 transitions. [2024-11-28 04:29:21,406 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 04:29:21,406 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.5) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2024-11-28 04:29:21,406 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:29:21,411 INFO L225 Difference]: With dead ends: 1127 [2024-11-28 04:29:21,411 INFO L226 Difference]: Without dead ends: 1127 [2024-11-28 04:29:21,412 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-28 04:29:21,413 INFO L435 NwaCegarLoop]: 910 mSDtfsCounter, 323 mSDsluCounter, 1573 mSDsCounter, 0 mSdLazyCounter, 258 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 323 SdHoareTripleChecker+Valid, 2483 SdHoareTripleChecker+Invalid, 264 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 258 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-11-28 04:29:21,413 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [323 Valid, 2483 Invalid, 264 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 258 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-11-28 04:29:21,416 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1127 states. [2024-11-28 04:29:21,450 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1127 to 911. [2024-11-28 04:29:21,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 911 states, 538 states have (on average 1.929368029739777) internal successors, (1038), 905 states have internal predecessors, (1038), 13 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 4 states have call predecessors, (13), 13 states have call successors, (13) [2024-11-28 04:29:21,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 911 states to 911 states and 1064 transitions. [2024-11-28 04:29:21,462 INFO L78 Accepts]: Start accepts. Automaton has 911 states and 1064 transitions. Word has length 6 [2024-11-28 04:29:21,463 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:29:21,463 INFO L471 AbstractCegarLoop]: Abstraction has 911 states and 1064 transitions. [2024-11-28 04:29:21,463 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.5) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:29:21,464 INFO L276 IsEmpty]: Start isEmpty. Operand 911 states and 1064 transitions. [2024-11-28 04:29:21,467 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2024-11-28 04:29:21,467 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:29:21,468 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:29:21,478 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fac2c519-6114-494f-b673-46e60df3294e/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-28 04:29:21,668 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fac2c519-6114-494f-b673-46e60df3294e/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:29:21,668 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr423ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 422 more)] === [2024-11-28 04:29:21,669 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:29:21,669 INFO L85 PathProgramCache]: Analyzing trace with hash 1290386196, now seen corresponding path program 1 times [2024-11-28 04:29:21,669 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 04:29:21,669 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1202615384] [2024-11-28 04:29:21,669 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:29:21,669 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:29:21,670 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fac2c519-6114-494f-b673-46e60df3294e/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:29:21,674 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fac2c519-6114-494f-b673-46e60df3294e/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:29:21,675 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fac2c519-6114-494f-b673-46e60df3294e/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-28 04:29:21,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:29:21,789 INFO L256 TraceCheckSpWp]: Trace formula consists of 33 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-28 04:29:21,790 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:29:21,827 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 04:29:21,827 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 04:29:21,827 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 04:29:21,827 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1202615384] [2024-11-28 04:29:21,827 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1202615384] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:29:21,827 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:29:21,827 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-28 04:29:21,827 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [467497634] [2024-11-28 04:29:21,827 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:29:21,828 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 04:29:21,828 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 04:29:21,828 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 04:29:21,828 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 04:29:21,829 INFO L87 Difference]: Start difference. First operand 911 states and 1064 transitions. Second operand has 3 states, 2 states have (on average 5.5) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:29:23,383 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:29:23,383 INFO L93 Difference]: Finished difference Result 913 states and 1065 transitions. [2024-11-28 04:29:23,384 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 04:29:23,384 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 5.5) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2024-11-28 04:29:23,384 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:29:23,390 INFO L225 Difference]: With dead ends: 913 [2024-11-28 04:29:23,390 INFO L226 Difference]: Without dead ends: 905 [2024-11-28 04:29:23,390 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 04:29:23,391 INFO L435 NwaCegarLoop]: 843 mSDtfsCounter, 1 mSDsluCounter, 474 mSDsCounter, 0 mSdLazyCounter, 370 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 1317 SdHoareTripleChecker+Invalid, 370 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 370 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2024-11-28 04:29:23,391 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 1317 Invalid, 370 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 370 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2024-11-28 04:29:23,398 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 905 states. [2024-11-28 04:29:23,428 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 905 to 905. [2024-11-28 04:29:23,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 905 states, 532 states have (on average 1.9379699248120301) internal successors, (1031), 899 states have internal predecessors, (1031), 13 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 4 states have call predecessors, (13), 13 states have call successors, (13) [2024-11-28 04:29:23,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 905 states to 905 states and 1057 transitions. [2024-11-28 04:29:23,439 INFO L78 Accepts]: Start accepts. Automaton has 905 states and 1057 transitions. Word has length 11 [2024-11-28 04:29:23,439 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:29:23,439 INFO L471 AbstractCegarLoop]: Abstraction has 905 states and 1057 transitions. [2024-11-28 04:29:23,440 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 5.5) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:29:23,440 INFO L276 IsEmpty]: Start isEmpty. Operand 905 states and 1057 transitions. [2024-11-28 04:29:23,440 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2024-11-28 04:29:23,440 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:29:23,440 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:29:23,451 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fac2c519-6114-494f-b673-46e60df3294e/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-11-28 04:29:23,641 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fac2c519-6114-494f-b673-46e60df3294e/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:29:23,641 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 422 more)] === [2024-11-28 04:29:23,641 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:29:23,642 INFO L85 PathProgramCache]: Analyzing trace with hash 1783262039, now seen corresponding path program 1 times [2024-11-28 04:29:23,642 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 04:29:23,642 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [22134778] [2024-11-28 04:29:23,642 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:29:23,642 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:29:23,642 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fac2c519-6114-494f-b673-46e60df3294e/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:29:23,644 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fac2c519-6114-494f-b673-46e60df3294e/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:29:23,646 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fac2c519-6114-494f-b673-46e60df3294e/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-28 04:29:23,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:29:23,802 INFO L256 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-28 04:29:23,804 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:29:23,815 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 04:29:23,866 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 04:29:23,866 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 04:29:23,867 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 04:29:23,867 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [22134778] [2024-11-28 04:29:23,867 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [22134778] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:29:23,867 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:29:23,867 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 04:29:23,867 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [748878464] [2024-11-28 04:29:23,867 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:29:23,867 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 04:29:23,867 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 04:29:23,868 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 04:29:23,868 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 04:29:23,868 INFO L87 Difference]: Start difference. First operand 905 states and 1057 transitions. Second operand has 4 states, 3 states have (on average 4.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:29:26,718 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:29:26,718 INFO L93 Difference]: Finished difference Result 890 states and 1019 transitions. [2024-11-28 04:29:26,719 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 04:29:26,719 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2024-11-28 04:29:26,719 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:29:26,723 INFO L225 Difference]: With dead ends: 890 [2024-11-28 04:29:26,723 INFO L226 Difference]: Without dead ends: 890 [2024-11-28 04:29:26,724 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-28 04:29:26,726 INFO L435 NwaCegarLoop]: 520 mSDtfsCounter, 587 mSDsluCounter, 447 mSDsCounter, 0 mSdLazyCounter, 894 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 600 SdHoareTripleChecker+Valid, 967 SdHoareTripleChecker+Invalid, 922 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 894 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2024-11-28 04:29:26,726 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [600 Valid, 967 Invalid, 922 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 894 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2024-11-28 04:29:26,729 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 890 states. [2024-11-28 04:29:26,750 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 890 to 882. [2024-11-28 04:29:26,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 882 states, 532 states have (on average 1.8515037593984962) internal successors, (985), 876 states have internal predecessors, (985), 13 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 4 states have call predecessors, (13), 13 states have call successors, (13) [2024-11-28 04:29:26,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 882 states to 882 states and 1011 transitions. [2024-11-28 04:29:26,759 INFO L78 Accepts]: Start accepts. Automaton has 882 states and 1011 transitions. Word has length 12 [2024-11-28 04:29:26,760 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:29:26,760 INFO L471 AbstractCegarLoop]: Abstraction has 882 states and 1011 transitions. [2024-11-28 04:29:26,760 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:29:26,760 INFO L276 IsEmpty]: Start isEmpty. Operand 882 states and 1011 transitions. [2024-11-28 04:29:26,761 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2024-11-28 04:29:26,761 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:29:26,761 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:29:26,774 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fac2c519-6114-494f-b673-46e60df3294e/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-28 04:29:26,961 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fac2c519-6114-494f-b673-46e60df3294e/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:29:26,962 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 422 more)] === [2024-11-28 04:29:26,962 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:29:26,964 INFO L85 PathProgramCache]: Analyzing trace with hash 1783262040, now seen corresponding path program 1 times [2024-11-28 04:29:26,964 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 04:29:26,964 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [859163716] [2024-11-28 04:29:26,964 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:29:26,964 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:29:26,965 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fac2c519-6114-494f-b673-46e60df3294e/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:29:26,967 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fac2c519-6114-494f-b673-46e60df3294e/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:29:26,969 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fac2c519-6114-494f-b673-46e60df3294e/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-28 04:29:27,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:29:27,133 INFO L256 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-28 04:29:27,135 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:29:27,152 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 04:29:27,278 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 04:29:27,279 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 04:29:27,279 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 04:29:27,279 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [859163716] [2024-11-28 04:29:27,279 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [859163716] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:29:27,279 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:29:27,279 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 04:29:27,279 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1234902413] [2024-11-28 04:29:27,279 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:29:27,280 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 04:29:27,280 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 04:29:27,280 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 04:29:27,280 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 04:29:27,280 INFO L87 Difference]: Start difference. First operand 882 states and 1011 transitions. Second operand has 4 states, 3 states have (on average 4.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:29:30,661 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:29:30,661 INFO L93 Difference]: Finished difference Result 1063 states and 1183 transitions. [2024-11-28 04:29:30,662 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 04:29:30,662 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2024-11-28 04:29:30,662 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:29:30,667 INFO L225 Difference]: With dead ends: 1063 [2024-11-28 04:29:30,667 INFO L226 Difference]: Without dead ends: 1063 [2024-11-28 04:29:30,667 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-28 04:29:30,669 INFO L435 NwaCegarLoop]: 789 mSDtfsCounter, 389 mSDsluCounter, 790 mSDsCounter, 0 mSdLazyCounter, 909 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 389 SdHoareTripleChecker+Valid, 1579 SdHoareTripleChecker+Invalid, 931 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 909 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2024-11-28 04:29:30,669 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [389 Valid, 1579 Invalid, 931 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 909 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time] [2024-11-28 04:29:30,673 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1063 states. [2024-11-28 04:29:30,695 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1063 to 998. [2024-11-28 04:29:30,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 998 states, 648 states have (on average 1.7361111111111112) internal successors, (1125), 992 states have internal predecessors, (1125), 13 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 4 states have call predecessors, (13), 13 states have call successors, (13) [2024-11-28 04:29:30,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 998 states to 998 states and 1151 transitions. [2024-11-28 04:29:30,702 INFO L78 Accepts]: Start accepts. Automaton has 998 states and 1151 transitions. Word has length 12 [2024-11-28 04:29:30,702 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:29:30,702 INFO L471 AbstractCegarLoop]: Abstraction has 998 states and 1151 transitions. [2024-11-28 04:29:30,702 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:29:30,703 INFO L276 IsEmpty]: Start isEmpty. Operand 998 states and 1151 transitions. [2024-11-28 04:29:30,704 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2024-11-28 04:29:30,705 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:29:30,705 INFO L218 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:29:30,718 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fac2c519-6114-494f-b673-46e60df3294e/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-28 04:29:30,909 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fac2c519-6114-494f-b673-46e60df3294e/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:29:30,910 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 422 more)] === [2024-11-28 04:29:30,910 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:29:30,910 INFO L85 PathProgramCache]: Analyzing trace with hash -1048779893, now seen corresponding path program 1 times [2024-11-28 04:29:30,911 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 04:29:30,911 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2006738494] [2024-11-28 04:29:30,911 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:29:30,912 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:29:30,912 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fac2c519-6114-494f-b673-46e60df3294e/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:29:30,914 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fac2c519-6114-494f-b673-46e60df3294e/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:29:30,918 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fac2c519-6114-494f-b673-46e60df3294e/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-28 04:29:31,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:29:31,196 INFO L256 TraceCheckSpWp]: Trace formula consists of 151 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-28 04:29:31,199 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:29:31,212 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 04:29:31,565 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:29:31,566 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:29:32,265 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:29:32,265 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 04:29:32,266 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2006738494] [2024-11-28 04:29:32,266 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2006738494] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:29:32,266 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-28 04:29:32,266 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 7 [2024-11-28 04:29:32,266 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [81551936] [2024-11-28 04:29:32,266 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-28 04:29:32,266 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-28 04:29:32,267 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 04:29:32,267 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-28 04:29:32,267 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-11-28 04:29:32,267 INFO L87 Difference]: Start difference. First operand 998 states and 1151 transitions. Second operand has 8 states, 7 states have (on average 8.428571428571429) internal successors, (59), 8 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:29:41,789 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:29:41,789 INFO L93 Difference]: Finished difference Result 1425 states and 1679 transitions. [2024-11-28 04:29:41,790 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-28 04:29:41,790 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 8.428571428571429) internal successors, (59), 8 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 31 [2024-11-28 04:29:41,790 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:29:41,798 INFO L225 Difference]: With dead ends: 1425 [2024-11-28 04:29:41,799 INFO L226 Difference]: Without dead ends: 1425 [2024-11-28 04:29:41,800 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=48, Invalid=84, Unknown=0, NotChecked=0, Total=132 [2024-11-28 04:29:41,802 INFO L435 NwaCegarLoop]: 817 mSDtfsCounter, 1087 mSDsluCounter, 1664 mSDsCounter, 0 mSdLazyCounter, 1775 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1088 SdHoareTripleChecker+Valid, 2481 SdHoareTripleChecker+Invalid, 1802 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 1775 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.2s IncrementalHoareTripleChecker+Time [2024-11-28 04:29:41,802 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1088 Valid, 2481 Invalid, 1802 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 1775 Invalid, 0 Unknown, 0 Unchecked, 9.2s Time] [2024-11-28 04:29:41,807 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1425 states. [2024-11-28 04:29:41,831 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1425 to 1164. [2024-11-28 04:29:41,834 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1164 states, 814 states have (on average 1.6695331695331694) internal successors, (1359), 1158 states have internal predecessors, (1359), 13 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 4 states have call predecessors, (13), 13 states have call successors, (13) [2024-11-28 04:29:41,838 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1164 states to 1164 states and 1385 transitions. [2024-11-28 04:29:41,839 INFO L78 Accepts]: Start accepts. Automaton has 1164 states and 1385 transitions. Word has length 31 [2024-11-28 04:29:41,839 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:29:41,839 INFO L471 AbstractCegarLoop]: Abstraction has 1164 states and 1385 transitions. [2024-11-28 04:29:41,839 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 8.428571428571429) internal successors, (59), 8 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:29:41,839 INFO L276 IsEmpty]: Start isEmpty. Operand 1164 states and 1385 transitions. [2024-11-28 04:29:41,842 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2024-11-28 04:29:41,843 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:29:41,843 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 04:29:41,859 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fac2c519-6114-494f-b673-46e60df3294e/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2024-11-28 04:29:42,047 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fac2c519-6114-494f-b673-46e60df3294e/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:29:42,048 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr61REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 422 more)] === [2024-11-28 04:29:42,048 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:29:42,048 INFO L85 PathProgramCache]: Analyzing trace with hash -717313938, now seen corresponding path program 1 times [2024-11-28 04:29:42,049 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 04:29:42,049 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [253020286] [2024-11-28 04:29:42,049 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:29:42,049 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:29:42,049 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fac2c519-6114-494f-b673-46e60df3294e/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:29:42,054 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fac2c519-6114-494f-b673-46e60df3294e/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:29:42,055 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fac2c519-6114-494f-b673-46e60df3294e/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-28 04:29:42,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:29:42,304 INFO L256 TraceCheckSpWp]: Trace formula consists of 204 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-28 04:29:42,306 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:29:42,383 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 04:29:42,383 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 04:29:42,383 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 04:29:42,383 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [253020286] [2024-11-28 04:29:42,383 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [253020286] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:29:42,383 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:29:42,383 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-28 04:29:42,383 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [498136843] [2024-11-28 04:29:42,383 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:29:42,384 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 04:29:42,384 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 04:29:42,384 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 04:29:42,388 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 04:29:42,389 INFO L87 Difference]: Start difference. First operand 1164 states and 1385 transitions. Second operand has 4 states, 4 states have (on average 11.75) internal successors, (47), 4 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:29:42,517 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:29:42,517 INFO L93 Difference]: Finished difference Result 849 states and 945 transitions. [2024-11-28 04:29:42,517 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 04:29:42,518 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.75) internal successors, (47), 4 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2024-11-28 04:29:42,518 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:29:42,520 INFO L225 Difference]: With dead ends: 849 [2024-11-28 04:29:42,521 INFO L226 Difference]: Without dead ends: 849 [2024-11-28 04:29:42,521 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-28 04:29:42,522 INFO L435 NwaCegarLoop]: 759 mSDtfsCounter, 56 mSDsluCounter, 1445 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56 SdHoareTripleChecker+Valid, 2204 SdHoareTripleChecker+Invalid, 77 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 04:29:42,522 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [56 Valid, 2204 Invalid, 77 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 04:29:42,524 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 849 states. [2024-11-28 04:29:42,534 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 849 to 847. [2024-11-28 04:29:42,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 847 states, 520 states have (on average 1.7634615384615384) internal successors, (917), 841 states have internal predecessors, (917), 13 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 4 states have call predecessors, (13), 13 states have call successors, (13) [2024-11-28 04:29:42,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 847 states to 847 states and 943 transitions. [2024-11-28 04:29:42,538 INFO L78 Accepts]: Start accepts. Automaton has 847 states and 943 transitions. Word has length 47 [2024-11-28 04:29:42,539 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:29:42,539 INFO L471 AbstractCegarLoop]: Abstraction has 847 states and 943 transitions. [2024-11-28 04:29:42,539 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.75) internal successors, (47), 4 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:29:42,539 INFO L276 IsEmpty]: Start isEmpty. Operand 847 states and 943 transitions. [2024-11-28 04:29:42,540 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2024-11-28 04:29:42,540 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:29:42,540 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 04:29:42,555 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fac2c519-6114-494f-b673-46e60df3294e/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-11-28 04:29:42,741 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fac2c519-6114-494f-b673-46e60df3294e/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:29:42,741 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr61REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 422 more)] === [2024-11-28 04:29:42,741 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:29:42,742 INFO L85 PathProgramCache]: Analyzing trace with hash 489889826, now seen corresponding path program 1 times [2024-11-28 04:29:42,742 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 04:29:42,742 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1991996854] [2024-11-28 04:29:42,742 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:29:42,742 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:29:42,743 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fac2c519-6114-494f-b673-46e60df3294e/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:29:42,751 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fac2c519-6114-494f-b673-46e60df3294e/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:29:42,756 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fac2c519-6114-494f-b673-46e60df3294e/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-28 04:29:43,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:29:43,046 INFO L256 TraceCheckSpWp]: Trace formula consists of 228 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-28 04:29:43,051 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:29:43,062 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 04:29:43,882 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 04:29:43,885 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 04:29:43,917 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2024-11-28 04:29:43,918 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 04:29:43,931 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:29:43,935 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 04:29:43,935 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 04:29:43,935 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1991996854] [2024-11-28 04:29:43,935 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1991996854] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:29:43,935 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:29:43,936 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 04:29:43,936 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1818247453] [2024-11-28 04:29:43,936 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:29:43,936 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 04:29:43,936 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 04:29:43,936 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 04:29:43,937 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-28 04:29:43,937 INFO L87 Difference]: Start difference. First operand 847 states and 943 transitions. Second operand has 4 states, 3 states have (on average 18.333333333333332) internal successors, (55), 4 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:29:45,934 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:29:45,934 INFO L93 Difference]: Finished difference Result 809 states and 905 transitions. [2024-11-28 04:29:45,935 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 04:29:45,935 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 18.333333333333332) internal successors, (55), 4 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 55 [2024-11-28 04:29:45,936 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:29:45,941 INFO L225 Difference]: With dead ends: 809 [2024-11-28 04:29:45,941 INFO L226 Difference]: Without dead ends: 809 [2024-11-28 04:29:45,941 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-28 04:29:45,942 INFO L435 NwaCegarLoop]: 430 mSDtfsCounter, 793 mSDsluCounter, 161 mSDsCounter, 0 mSdLazyCounter, 434 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 796 SdHoareTripleChecker+Valid, 591 SdHoareTripleChecker+Invalid, 481 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 434 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2024-11-28 04:29:45,942 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [796 Valid, 591 Invalid, 481 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [47 Valid, 434 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2024-11-28 04:29:45,944 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 809 states. [2024-11-28 04:29:45,983 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 809 to 772. [2024-11-28 04:29:45,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 772 states, 483 states have (on average 1.6666666666666667) internal successors, (805), 766 states have internal predecessors, (805), 13 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 4 states have call predecessors, (13), 13 states have call successors, (13) [2024-11-28 04:29:45,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 772 states to 772 states and 831 transitions. [2024-11-28 04:29:45,987 INFO L78 Accepts]: Start accepts. Automaton has 772 states and 831 transitions. Word has length 55 [2024-11-28 04:29:45,988 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:29:45,988 INFO L471 AbstractCegarLoop]: Abstraction has 772 states and 831 transitions. [2024-11-28 04:29:45,988 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 18.333333333333332) internal successors, (55), 4 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:29:45,988 INFO L276 IsEmpty]: Start isEmpty. Operand 772 states and 831 transitions. [2024-11-28 04:29:45,991 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2024-11-28 04:29:45,994 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:29:45,994 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:29:46,010 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fac2c519-6114-494f-b673-46e60df3294e/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-11-28 04:29:46,194 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fac2c519-6114-494f-b673-46e60df3294e/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:29:46,195 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr66REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 422 more)] === [2024-11-28 04:29:46,196 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:29:46,196 INFO L85 PathProgramCache]: Analyzing trace with hash 225246615, now seen corresponding path program 1 times [2024-11-28 04:29:46,196 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 04:29:46,196 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [563836749] [2024-11-28 04:29:46,196 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:29:46,197 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:29:46,197 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fac2c519-6114-494f-b673-46e60df3294e/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:29:46,199 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fac2c519-6114-494f-b673-46e60df3294e/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:29:46,208 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fac2c519-6114-494f-b673-46e60df3294e/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-28 04:29:46,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:29:46,445 INFO L256 TraceCheckSpWp]: Trace formula consists of 255 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-28 04:29:46,453 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:29:46,472 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 04:29:46,498 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2024-11-28 04:29:46,543 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2024-11-28 04:29:46,562 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 04:29:46,563 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 04:29:46,563 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 04:29:46,563 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [563836749] [2024-11-28 04:29:46,563 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [563836749] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:29:46,563 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:29:46,563 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-28 04:29:46,565 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1805387075] [2024-11-28 04:29:46,565 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:29:46,566 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-28 04:29:46,566 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 04:29:46,566 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-28 04:29:46,566 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-28 04:29:46,566 INFO L87 Difference]: Start difference. First operand 772 states and 831 transitions. Second operand has 5 states, 4 states have (on average 15.0) internal successors, (60), 5 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:29:49,117 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:29:49,118 INFO L93 Difference]: Finished difference Result 771 states and 830 transitions. [2024-11-28 04:29:49,118 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-28 04:29:49,118 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 15.0) internal successors, (60), 5 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 60 [2024-11-28 04:29:49,118 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:29:49,121 INFO L225 Difference]: With dead ends: 771 [2024-11-28 04:29:49,121 INFO L226 Difference]: Without dead ends: 771 [2024-11-28 04:29:49,121 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 56 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 04:29:49,122 INFO L435 NwaCegarLoop]: 732 mSDtfsCounter, 2 mSDsluCounter, 1174 mSDsCounter, 0 mSdLazyCounter, 1029 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 1906 SdHoareTripleChecker+Invalid, 1030 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1029 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2024-11-28 04:29:49,122 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 1906 Invalid, 1030 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1029 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2024-11-28 04:29:49,123 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 771 states. [2024-11-28 04:29:49,133 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 771 to 771. [2024-11-28 04:29:49,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 771 states, 483 states have (on average 1.6645962732919255) internal successors, (804), 765 states have internal predecessors, (804), 13 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 4 states have call predecessors, (13), 13 states have call successors, (13) [2024-11-28 04:29:49,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 771 states to 771 states and 830 transitions. [2024-11-28 04:29:49,137 INFO L78 Accepts]: Start accepts. Automaton has 771 states and 830 transitions. Word has length 60 [2024-11-28 04:29:49,137 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:29:49,137 INFO L471 AbstractCegarLoop]: Abstraction has 771 states and 830 transitions. [2024-11-28 04:29:49,137 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 15.0) internal successors, (60), 5 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:29:49,138 INFO L276 IsEmpty]: Start isEmpty. Operand 771 states and 830 transitions. [2024-11-28 04:29:49,138 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2024-11-28 04:29:49,138 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:29:49,138 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:29:49,151 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fac2c519-6114-494f-b673-46e60df3294e/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2024-11-28 04:29:49,339 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fac2c519-6114-494f-b673-46e60df3294e/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:29:49,339 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr67REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 422 more)] === [2024-11-28 04:29:49,340 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:29:49,340 INFO L85 PathProgramCache]: Analyzing trace with hash 225246616, now seen corresponding path program 1 times [2024-11-28 04:29:49,340 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 04:29:49,340 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1722732089] [2024-11-28 04:29:49,340 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:29:49,340 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:29:49,340 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fac2c519-6114-494f-b673-46e60df3294e/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:29:49,342 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fac2c519-6114-494f-b673-46e60df3294e/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:29:49,344 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fac2c519-6114-494f-b673-46e60df3294e/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-11-28 04:29:49,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:29:49,637 INFO L256 TraceCheckSpWp]: Trace formula consists of 255 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-11-28 04:29:49,641 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:29:49,657 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 04:29:49,688 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2024-11-28 04:29:49,697 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2024-11-28 04:29:49,789 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 9 [2024-11-28 04:29:49,817 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 04:29:49,817 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 04:29:49,818 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 04:29:49,818 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1722732089] [2024-11-28 04:29:49,818 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1722732089] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:29:49,818 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:29:49,818 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-28 04:29:49,818 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [332885230] [2024-11-28 04:29:49,818 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:29:49,819 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-28 04:29:49,819 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 04:29:49,819 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-28 04:29:49,820 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-28 04:29:49,820 INFO L87 Difference]: Start difference. First operand 771 states and 830 transitions. Second operand has 5 states, 4 states have (on average 15.0) internal successors, (60), 5 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:29:52,994 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:29:52,994 INFO L93 Difference]: Finished difference Result 770 states and 829 transitions. [2024-11-28 04:29:52,995 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-28 04:29:52,995 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 15.0) internal successors, (60), 5 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 60 [2024-11-28 04:29:52,995 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:29:52,998 INFO L225 Difference]: With dead ends: 770 [2024-11-28 04:29:52,998 INFO L226 Difference]: Without dead ends: 770 [2024-11-28 04:29:52,998 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 56 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 04:29:52,999 INFO L435 NwaCegarLoop]: 732 mSDtfsCounter, 1 mSDsluCounter, 1197 mSDsCounter, 0 mSdLazyCounter, 1003 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 1929 SdHoareTripleChecker+Invalid, 1004 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1003 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2024-11-28 04:29:52,999 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 1929 Invalid, 1004 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1003 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2024-11-28 04:29:53,001 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 770 states. [2024-11-28 04:29:53,013 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 770 to 770. [2024-11-28 04:29:53,014 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 770 states, 482 states have (on average 1.66597510373444) internal successors, (803), 764 states have internal predecessors, (803), 13 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 4 states have call predecessors, (13), 13 states have call successors, (13) [2024-11-28 04:29:53,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 770 states to 770 states and 829 transitions. [2024-11-28 04:29:53,017 INFO L78 Accepts]: Start accepts. Automaton has 770 states and 829 transitions. Word has length 60 [2024-11-28 04:29:53,017 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:29:53,017 INFO L471 AbstractCegarLoop]: Abstraction has 770 states and 829 transitions. [2024-11-28 04:29:53,018 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 15.0) internal successors, (60), 5 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:29:53,018 INFO L276 IsEmpty]: Start isEmpty. Operand 770 states and 829 transitions. [2024-11-28 04:29:53,018 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2024-11-28 04:29:53,018 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:29:53,019 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:29:53,036 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fac2c519-6114-494f-b673-46e60df3294e/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2024-11-28 04:29:53,219 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fac2c519-6114-494f-b673-46e60df3294e/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:29:53,219 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr70REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 422 more)] === [2024-11-28 04:29:53,220 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:29:53,220 INFO L85 PathProgramCache]: Analyzing trace with hash -1220890562, now seen corresponding path program 1 times [2024-11-28 04:29:53,220 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 04:29:53,220 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [29082486] [2024-11-28 04:29:53,220 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:29:53,221 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:29:53,221 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fac2c519-6114-494f-b673-46e60df3294e/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:29:53,223 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fac2c519-6114-494f-b673-46e60df3294e/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:29:53,225 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fac2c519-6114-494f-b673-46e60df3294e/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-11-28 04:29:53,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:29:53,500 INFO L256 TraceCheckSpWp]: Trace formula consists of 281 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-28 04:29:53,504 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:29:53,524 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2024-11-28 04:29:53,653 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2024-11-28 04:29:53,672 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 04:29:53,672 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 04:29:53,672 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 04:29:53,673 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [29082486] [2024-11-28 04:29:53,673 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [29082486] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:29:53,673 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:29:53,673 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-28 04:29:53,673 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1290038193] [2024-11-28 04:29:53,673 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:29:53,674 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-28 04:29:53,674 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 04:29:53,675 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-28 04:29:53,675 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-11-28 04:29:53,675 INFO L87 Difference]: Start difference. First operand 770 states and 829 transitions. Second operand has 7 states, 5 states have (on average 13.2) internal successors, (66), 6 states have internal predecessors, (66), 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 04:29:57,787 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:29:57,787 INFO L93 Difference]: Finished difference Result 782 states and 844 transitions. [2024-11-28 04:29:57,788 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-28 04:29:57,788 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 5 states have (on average 13.2) internal successors, (66), 6 states have internal predecessors, (66), 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 68 [2024-11-28 04:29:57,788 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:29:57,790 INFO L225 Difference]: With dead ends: 782 [2024-11-28 04:29:57,790 INFO L226 Difference]: Without dead ends: 782 [2024-11-28 04:29:57,790 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-11-28 04:29:57,791 INFO L435 NwaCegarLoop]: 718 mSDtfsCounter, 12 mSDsluCounter, 2208 mSDsCounter, 0 mSdLazyCounter, 1460 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 2926 SdHoareTripleChecker+Invalid, 1474 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 1460 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.0s IncrementalHoareTripleChecker+Time [2024-11-28 04:29:57,791 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 2926 Invalid, 1474 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 1460 Invalid, 0 Unknown, 0 Unchecked, 4.0s Time] [2024-11-28 04:29:57,793 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 782 states. [2024-11-28 04:29:57,806 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 782 to 776. [2024-11-28 04:29:57,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 776 states, 487 states have (on average 1.6632443531827514) internal successors, (810), 769 states have internal predecessors, (810), 13 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (16), 5 states have call predecessors, (16), 13 states have call successors, (16) [2024-11-28 04:29:57,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 776 states to 776 states and 839 transitions. [2024-11-28 04:29:57,811 INFO L78 Accepts]: Start accepts. Automaton has 776 states and 839 transitions. Word has length 68 [2024-11-28 04:29:57,811 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:29:57,811 INFO L471 AbstractCegarLoop]: Abstraction has 776 states and 839 transitions. [2024-11-28 04:29:57,812 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 5 states have (on average 13.2) internal successors, (66), 6 states have internal predecessors, (66), 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 04:29:57,812 INFO L276 IsEmpty]: Start isEmpty. Operand 776 states and 839 transitions. [2024-11-28 04:29:57,812 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2024-11-28 04:29:57,813 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:29:57,813 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:29:57,830 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fac2c519-6114-494f-b673-46e60df3294e/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2024-11-28 04:29:58,013 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fac2c519-6114-494f-b673-46e60df3294e/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:29:58,014 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr71REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 422 more)] === [2024-11-28 04:29:58,014 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:29:58,014 INFO L85 PathProgramCache]: Analyzing trace with hash -1220890561, now seen corresponding path program 1 times [2024-11-28 04:29:58,014 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 04:29:58,014 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1090153594] [2024-11-28 04:29:58,015 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:29:58,015 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:29:58,015 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fac2c519-6114-494f-b673-46e60df3294e/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:29:58,018 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fac2c519-6114-494f-b673-46e60df3294e/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:29:58,020 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fac2c519-6114-494f-b673-46e60df3294e/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-11-28 04:29:58,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:29:58,293 INFO L256 TraceCheckSpWp]: Trace formula consists of 281 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-28 04:29:58,295 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:29:58,323 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 04:29:58,323 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 04:29:58,323 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 04:29:58,324 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1090153594] [2024-11-28 04:29:58,324 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1090153594] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:29:58,324 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:29:58,324 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-28 04:29:58,324 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [592844738] [2024-11-28 04:29:58,324 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:29:58,324 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 04:29:58,324 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 04:29:58,325 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 04:29:58,325 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 04:29:58,325 INFO L87 Difference]: Start difference. First operand 776 states and 839 transitions. Second operand has 4 states, 4 states have (on average 16.5) internal successors, (66), 4 states have internal predecessors, (66), 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 04:29:58,379 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:29:58,379 INFO L93 Difference]: Finished difference Result 773 states and 833 transitions. [2024-11-28 04:29:58,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 04:29:58,380 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.5) internal successors, (66), 4 states have internal predecessors, (66), 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 68 [2024-11-28 04:29:58,381 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:29:58,384 INFO L225 Difference]: With dead ends: 773 [2024-11-28 04:29:58,384 INFO L226 Difference]: Without dead ends: 773 [2024-11-28 04:29:58,384 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 65 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 04:29:58,385 INFO L435 NwaCegarLoop]: 732 mSDtfsCounter, 0 mSDsluCounter, 1459 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 2191 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 04:29:58,385 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 2191 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 04:29:58,387 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 773 states. [2024-11-28 04:29:58,406 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 773 to 773. [2024-11-28 04:29:58,408 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 773 states, 484 states have (on average 1.665289256198347) internal successors, (806), 767 states have internal predecessors, (806), 13 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (14), 4 states have call predecessors, (14), 13 states have call successors, (14) [2024-11-28 04:29:58,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 773 states to 773 states and 833 transitions. [2024-11-28 04:29:58,411 INFO L78 Accepts]: Start accepts. Automaton has 773 states and 833 transitions. Word has length 68 [2024-11-28 04:29:58,411 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:29:58,412 INFO L471 AbstractCegarLoop]: Abstraction has 773 states and 833 transitions. [2024-11-28 04:29:58,412 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.5) internal successors, (66), 4 states have internal predecessors, (66), 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 04:29:58,412 INFO L276 IsEmpty]: Start isEmpty. Operand 773 states and 833 transitions. [2024-11-28 04:29:58,413 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2024-11-28 04:29:58,413 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:29:58,413 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:29:58,430 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fac2c519-6114-494f-b673-46e60df3294e/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2024-11-28 04:29:58,613 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fac2c519-6114-494f-b673-46e60df3294e/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:29:58,614 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr70REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 422 more)] === [2024-11-28 04:29:58,614 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:29:58,614 INFO L85 PathProgramCache]: Analyzing trace with hash 2110720672, now seen corresponding path program 1 times [2024-11-28 04:29:58,614 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 04:29:58,615 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2023906361] [2024-11-28 04:29:58,615 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:29:58,615 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:29:58,615 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fac2c519-6114-494f-b673-46e60df3294e/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:29:58,617 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fac2c519-6114-494f-b673-46e60df3294e/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:29:58,619 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fac2c519-6114-494f-b673-46e60df3294e/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-11-28 04:29:58,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:29:58,899 INFO L256 TraceCheckSpWp]: Trace formula consists of 292 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-28 04:29:58,901 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:29:58,949 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:29:58,949 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:29:59,074 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:29:59,076 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 04:29:59,076 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2023906361] [2024-11-28 04:29:59,076 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2023906361] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:29:59,077 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-28 04:29:59,077 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2024-11-28 04:29:59,077 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1049503439] [2024-11-28 04:29:59,077 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-28 04:29:59,078 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-28 04:29:59,078 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 04:29:59,078 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-28 04:29:59,079 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2024-11-28 04:29:59,079 INFO L87 Difference]: Start difference. First operand 773 states and 833 transitions. Second operand has 8 states, 8 states have (on average 8.875) internal successors, (71), 8 states have internal predecessors, (71), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-28 04:29:59,327 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:29:59,328 INFO L93 Difference]: Finished difference Result 785 states and 850 transitions. [2024-11-28 04:29:59,329 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-28 04:29:59,329 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 8.875) internal successors, (71), 8 states have internal predecessors, (71), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 69 [2024-11-28 04:29:59,329 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:29:59,332 INFO L225 Difference]: With dead ends: 785 [2024-11-28 04:29:59,333 INFO L226 Difference]: Without dead ends: 785 [2024-11-28 04:29:59,335 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 139 GetRequests, 130 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=44, Invalid=66, Unknown=0, NotChecked=0, Total=110 [2024-11-28 04:29:59,336 INFO L435 NwaCegarLoop]: 732 mSDtfsCounter, 5 mSDsluCounter, 2914 mSDsCounter, 0 mSdLazyCounter, 57 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 3646 SdHoareTripleChecker+Invalid, 62 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 57 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-28 04:29:59,336 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 3646 Invalid, 62 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 57 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-28 04:29:59,337 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 785 states. [2024-11-28 04:29:59,366 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 785 to 783. [2024-11-28 04:29:59,369 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 783 states, 493 states have (on average 1.6653144016227182) internal successors, (821), 776 states have internal predecessors, (821), 13 states have call successors, (13), 3 states have call predecessors, (13), 4 states have return successors, (14), 4 states have call predecessors, (14), 13 states have call successors, (14) [2024-11-28 04:29:59,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 783 states to 783 states and 848 transitions. [2024-11-28 04:29:59,374 INFO L78 Accepts]: Start accepts. Automaton has 783 states and 848 transitions. Word has length 69 [2024-11-28 04:29:59,375 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:29:59,375 INFO L471 AbstractCegarLoop]: Abstraction has 783 states and 848 transitions. [2024-11-28 04:29:59,375 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.875) internal successors, (71), 8 states have internal predecessors, (71), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-28 04:29:59,376 INFO L276 IsEmpty]: Start isEmpty. Operand 783 states and 848 transitions. [2024-11-28 04:29:59,376 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2024-11-28 04:29:59,376 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:29:59,377 INFO L218 NwaCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:29:59,394 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fac2c519-6114-494f-b673-46e60df3294e/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2024-11-28 04:29:59,577 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fac2c519-6114-494f-b673-46e60df3294e/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:29:59,578 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr70REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 422 more)] === [2024-11-28 04:29:59,579 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:29:59,579 INFO L85 PathProgramCache]: Analyzing trace with hash -424724290, now seen corresponding path program 2 times [2024-11-28 04:29:59,579 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 04:29:59,579 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [696651351] [2024-11-28 04:29:59,580 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 04:29:59,580 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:29:59,580 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fac2c519-6114-494f-b673-46e60df3294e/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:29:59,582 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fac2c519-6114-494f-b673-46e60df3294e/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:29:59,586 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fac2c519-6114-494f-b673-46e60df3294e/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2024-11-28 04:30:19,545 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 04:30:19,546 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:30:19,561 INFO L256 TraceCheckSpWp]: Trace formula consists of 325 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-11-28 04:30:19,565 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:30:19,572 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 04:30:19,766 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2024-11-28 04:30:19,766 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 04:30:19,793 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2024-11-28 04:30:20,054 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2024-11-28 04:30:20,055 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 44 treesize of output 43 [2024-11-28 04:30:20,115 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 15 [2024-11-28 04:30:20,149 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-28 04:30:20,149 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:30:20,284 INFO L349 Elim1Store]: treesize reduction 7, result has 63.2 percent of original size [2024-11-28 04:30:20,284 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 24 [2024-11-28 04:30:20,365 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 04:30:20,365 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [696651351] [2024-11-28 04:30:20,365 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [696651351] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:30:20,365 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1882971081] [2024-11-28 04:30:20,365 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 04:30:20,366 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-28 04:30:20,366 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fac2c519-6114-494f-b673-46e60df3294e/bin/uautomizer-verify-aQ6SnzHsRB/cvc4 [2024-11-28 04:30:20,372 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fac2c519-6114-494f-b673-46e60df3294e/bin/uautomizer-verify-aQ6SnzHsRB/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-28 04:30:20,374 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fac2c519-6114-494f-b673-46e60df3294e/bin/uautomizer-verify-aQ6SnzHsRB/cvc4 --incremental --print-success --lang smt (18)] Waiting until timeout for monitored process [2024-11-28 04:30:21,671 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 04:30:21,671 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:30:21,680 INFO L256 TraceCheckSpWp]: Trace formula consists of 325 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-28 04:30:21,681 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:30:21,953 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:30:21,953 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:30:22,422 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:30:22,423 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1882971081] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:30:22,423 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 04:30:22,423 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 8, 8] total 23 [2024-11-28 04:30:22,424 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [107472510] [2024-11-28 04:30:22,424 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 04:30:22,424 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-11-28 04:30:22,424 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 04:30:22,425 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-11-28 04:30:22,426 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=89, Invalid=505, Unknown=6, NotChecked=0, Total=600 [2024-11-28 04:30:22,426 INFO L87 Difference]: Start difference. First operand 783 states and 848 transitions. Second operand has 23 states, 22 states have (on average 6.454545454545454) internal successors, (142), 22 states have internal predecessors, (142), 2 states have call successors, (2), 2 states have call predecessors, (2), 3 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-28 04:30:32,534 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:30:32,534 INFO L93 Difference]: Finished difference Result 799 states and 870 transitions. [2024-11-28 04:30:32,535 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2024-11-28 04:30:32,535 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 22 states have (on average 6.454545454545454) internal successors, (142), 22 states have internal predecessors, (142), 2 states have call successors, (2), 2 states have call predecessors, (2), 3 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 72 [2024-11-28 04:30:32,535 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:30:32,537 INFO L225 Difference]: With dead ends: 799 [2024-11-28 04:30:32,537 INFO L226 Difference]: Without dead ends: 793 [2024-11-28 04:30:32,538 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 243 GetRequests, 195 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 438 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=389, Invalid=2054, Unknown=7, NotChecked=0, Total=2450 [2024-11-28 04:30:32,538 INFO L435 NwaCegarLoop]: 496 mSDtfsCounter, 439 mSDsluCounter, 5034 mSDsCounter, 0 mSdLazyCounter, 3797 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 452 SdHoareTripleChecker+Valid, 5530 SdHoareTripleChecker+Invalid, 3823 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 3797 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.8s IncrementalHoareTripleChecker+Time [2024-11-28 04:30:32,538 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [452 Valid, 5530 Invalid, 3823 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 3797 Invalid, 0 Unknown, 0 Unchecked, 8.8s Time] [2024-11-28 04:30:32,540 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 793 states. [2024-11-28 04:30:32,550 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 793 to 791. [2024-11-28 04:30:32,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 791 states, 502 states have (on average 1.655378486055777) internal successors, (831), 784 states have internal predecessors, (831), 13 states have call successors, (13), 3 states have call predecessors, (13), 4 states have return successors, (14), 4 states have call predecessors, (14), 13 states have call successors, (14) [2024-11-28 04:30:32,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 791 states to 791 states and 858 transitions. [2024-11-28 04:30:32,553 INFO L78 Accepts]: Start accepts. Automaton has 791 states and 858 transitions. Word has length 72 [2024-11-28 04:30:32,554 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:30:32,554 INFO L471 AbstractCegarLoop]: Abstraction has 791 states and 858 transitions. [2024-11-28 04:30:32,554 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 22 states have (on average 6.454545454545454) internal successors, (142), 22 states have internal predecessors, (142), 2 states have call successors, (2), 2 states have call predecessors, (2), 3 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-28 04:30:32,554 INFO L276 IsEmpty]: Start isEmpty. Operand 791 states and 858 transitions. [2024-11-28 04:30:32,555 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2024-11-28 04:30:32,555 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:30:32,555 INFO L218 NwaCegarLoop]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:30:32,588 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fac2c519-6114-494f-b673-46e60df3294e/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2024-11-28 04:30:32,762 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fac2c519-6114-494f-b673-46e60df3294e/bin/uautomizer-verify-aQ6SnzHsRB/cvc4 --incremental --print-success --lang smt (18)] Ended with exit code 0 [2024-11-28 04:30:32,956 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fac2c519-6114-494f-b673-46e60df3294e/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fac2c519-6114-494f-b673-46e60df3294e/bin/uautomizer-verify-aQ6SnzHsRB/cvc4 --incremental --print-success --lang smt [2024-11-28 04:30:32,956 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr71REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 422 more)] === [2024-11-28 04:30:32,956 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:30:32,956 INFO L85 PathProgramCache]: Analyzing trace with hash 960925055, now seen corresponding path program 1 times [2024-11-28 04:30:32,957 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 04:30:32,957 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [634744998] [2024-11-28 04:30:32,957 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:30:32,957 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:30:32,957 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fac2c519-6114-494f-b673-46e60df3294e/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:30:32,961 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fac2c519-6114-494f-b673-46e60df3294e/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:30:32,968 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fac2c519-6114-494f-b673-46e60df3294e/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2024-11-28 04:30:33,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:30:33,329 INFO L256 TraceCheckSpWp]: Trace formula consists of 391 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-28 04:30:33,332 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:30:33,587 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:30:33,587 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:30:34,394 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:30:34,394 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 04:30:34,394 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [634744998] [2024-11-28 04:30:34,394 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [634744998] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:30:34,394 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-28 04:30:34,395 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 26 [2024-11-28 04:30:34,395 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1671356610] [2024-11-28 04:30:34,395 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-28 04:30:34,395 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2024-11-28 04:30:34,395 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 04:30:34,396 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2024-11-28 04:30:34,396 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=193, Invalid=457, Unknown=0, NotChecked=0, Total=650 [2024-11-28 04:30:34,397 INFO L87 Difference]: Start difference. First operand 791 states and 858 transitions. Second operand has 26 states, 26 states have (on average 3.423076923076923) internal successors, (89), 26 states have internal predecessors, (89), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-28 04:30:37,015 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:30:37,015 INFO L93 Difference]: Finished difference Result 815 states and 897 transitions. [2024-11-28 04:30:37,016 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2024-11-28 04:30:37,016 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 3.423076923076923) internal successors, (89), 26 states have internal predecessors, (89), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 78 [2024-11-28 04:30:37,017 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:30:37,019 INFO L225 Difference]: With dead ends: 815 [2024-11-28 04:30:37,019 INFO L226 Difference]: Without dead ends: 809 [2024-11-28 04:30:37,020 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 175 GetRequests, 130 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 100 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=728, Invalid=1434, Unknown=0, NotChecked=0, Total=2162 [2024-11-28 04:30:37,020 INFO L435 NwaCegarLoop]: 732 mSDtfsCounter, 22 mSDsluCounter, 10198 mSDsCounter, 0 mSdLazyCounter, 570 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 10930 SdHoareTripleChecker+Invalid, 589 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 570 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2024-11-28 04:30:37,020 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 10930 Invalid, 589 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 570 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2024-11-28 04:30:37,022 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 809 states. [2024-11-28 04:30:37,033 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 809 to 809. [2024-11-28 04:30:37,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 809 states, 520 states have (on average 1.6423076923076922) internal successors, (854), 802 states have internal predecessors, (854), 13 states have call successors, (13), 3 states have call predecessors, (13), 4 states have return successors, (14), 4 states have call predecessors, (14), 13 states have call successors, (14) [2024-11-28 04:30:37,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 809 states to 809 states and 881 transitions. [2024-11-28 04:30:37,037 INFO L78 Accepts]: Start accepts. Automaton has 809 states and 881 transitions. Word has length 78 [2024-11-28 04:30:37,038 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:30:37,038 INFO L471 AbstractCegarLoop]: Abstraction has 809 states and 881 transitions. [2024-11-28 04:30:37,038 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 3.423076923076923) internal successors, (89), 26 states have internal predecessors, (89), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-28 04:30:37,038 INFO L276 IsEmpty]: Start isEmpty. Operand 809 states and 881 transitions. [2024-11-28 04:30:37,039 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2024-11-28 04:30:37,039 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:30:37,039 INFO L218 NwaCegarLoop]: trace histogram [22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:30:37,057 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fac2c519-6114-494f-b673-46e60df3294e/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2024-11-28 04:30:37,243 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fac2c519-6114-494f-b673-46e60df3294e/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:30:37,244 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr71REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 422 more)] === [2024-11-28 04:30:37,244 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:30:37,244 INFO L85 PathProgramCache]: Analyzing trace with hash 1060734719, now seen corresponding path program 2 times [2024-11-28 04:30:37,245 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 04:30:37,245 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [263482025] [2024-11-28 04:30:37,245 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 04:30:37,245 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:30:37,245 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fac2c519-6114-494f-b673-46e60df3294e/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:30:37,249 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fac2c519-6114-494f-b673-46e60df3294e/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:30:37,251 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fac2c519-6114-494f-b673-46e60df3294e/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2024-11-28 04:30:55,146 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 04:30:55,146 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:30:55,167 INFO L256 TraceCheckSpWp]: Trace formula consists of 523 conjuncts, 26 conjuncts are in the unsatisfiable core [2024-11-28 04:30:55,169 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:30:55,830 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:30:55,830 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:30:58,575 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:30:58,576 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 04:30:58,576 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [263482025] [2024-11-28 04:30:58,576 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [263482025] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:30:58,576 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-28 04:30:58,576 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 26] total 50 [2024-11-28 04:30:58,577 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [643469253] [2024-11-28 04:30:58,577 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-28 04:30:58,578 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 50 states [2024-11-28 04:30:58,578 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 04:30:58,580 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2024-11-28 04:30:58,581 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=672, Invalid=1778, Unknown=0, NotChecked=0, Total=2450 [2024-11-28 04:30:58,581 INFO L87 Difference]: Start difference. First operand 809 states and 881 transitions. Second operand has 50 states, 50 states have (on average 2.26) internal successors, (113), 50 states have internal predecessors, (113), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-28 04:31:09,042 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:31:09,043 INFO L93 Difference]: Finished difference Result 851 states and 956 transitions. [2024-11-28 04:31:09,043 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 73 states. [2024-11-28 04:31:09,043 INFO L78 Accepts]: Start accepts. Automaton has has 50 states, 50 states have (on average 2.26) internal successors, (113), 50 states have internal predecessors, (113), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 90 [2024-11-28 04:31:09,044 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:31:09,046 INFO L225 Difference]: With dead ends: 851 [2024-11-28 04:31:09,046 INFO L226 Difference]: Without dead ends: 845 [2024-11-28 04:31:09,048 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 222 GetRequests, 130 SyntacticMatches, 0 SemanticMatches, 92 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 485 ImplicationChecksByTransitivity, 9.2s TimeCoverageRelationStatistics Valid=2784, Invalid=5958, Unknown=0, NotChecked=0, Total=8742 [2024-11-28 04:31:09,049 INFO L435 NwaCegarLoop]: 732 mSDtfsCounter, 41 mSDsluCounter, 16769 mSDsCounter, 0 mSdLazyCounter, 1971 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 17501 SdHoareTripleChecker+Invalid, 2005 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 1971 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.9s IncrementalHoareTripleChecker+Time [2024-11-28 04:31:09,049 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [41 Valid, 17501 Invalid, 2005 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 1971 Invalid, 0 Unknown, 0 Unchecked, 3.9s Time] [2024-11-28 04:31:09,050 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 845 states. [2024-11-28 04:31:09,061 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 845 to 845. [2024-11-28 04:31:09,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 845 states, 556 states have (on average 1.6223021582733812) internal successors, (902), 838 states have internal predecessors, (902), 13 states have call successors, (13), 3 states have call predecessors, (13), 4 states have return successors, (14), 4 states have call predecessors, (14), 13 states have call successors, (14) [2024-11-28 04:31:09,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 845 states to 845 states and 929 transitions. [2024-11-28 04:31:09,064 INFO L78 Accepts]: Start accepts. Automaton has 845 states and 929 transitions. Word has length 90 [2024-11-28 04:31:09,065 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:31:09,065 INFO L471 AbstractCegarLoop]: Abstraction has 845 states and 929 transitions. [2024-11-28 04:31:09,065 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 50 states, 50 states have (on average 2.26) internal successors, (113), 50 states have internal predecessors, (113), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-28 04:31:09,065 INFO L276 IsEmpty]: Start isEmpty. Operand 845 states and 929 transitions. [2024-11-28 04:31:09,066 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2024-11-28 04:31:09,066 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:31:09,066 INFO L218 NwaCegarLoop]: trace histogram [44, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:31:09,095 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fac2c519-6114-494f-b673-46e60df3294e/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2024-11-28 04:31:09,266 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fac2c519-6114-494f-b673-46e60df3294e/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:31:09,267 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr71REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 422 more)] === [2024-11-28 04:31:09,268 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:31:09,268 INFO L85 PathProgramCache]: Analyzing trace with hash -1341731393, now seen corresponding path program 3 times [2024-11-28 04:31:09,268 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 04:31:09,268 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1490085983] [2024-11-28 04:31:09,268 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-28 04:31:09,269 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:31:09,269 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fac2c519-6114-494f-b673-46e60df3294e/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:31:09,271 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fac2c519-6114-494f-b673-46e60df3294e/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:31:09,275 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fac2c519-6114-494f-b673-46e60df3294e/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process