./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/memsafety-broom/sll-nested-linux-list.i --full-output --architecture 64bit -------------------------------------------------------------------------------- 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_59a5a86a-8c5e-4252-a362-5ace54fdf036/bin/uautomizer-verify-aQ6SnzHsRB/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59a5a86a-8c5e-4252-a362-5ace54fdf036/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_59a5a86a-8c5e-4252-a362-5ace54fdf036/bin/uautomizer-verify-aQ6SnzHsRB/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59a5a86a-8c5e-4252-a362-5ace54fdf036/bin/uautomizer-verify-aQ6SnzHsRB/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/memsafety-broom/sll-nested-linux-list.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59a5a86a-8c5e-4252-a362-5ace54fdf036/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-DerefFreeMemtrack-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59a5a86a-8c5e-4252-a362-5ace54fdf036/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 64bit --witnessprinter.graph.data.programhash e2bb1828824fef1ebc4678312eafda6c009efcfccb4cbbca24aec817e45186ea --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-11-28 02:40:08,931 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-28 02:40:09,056 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59a5a86a-8c5e-4252-a362-5ace54fdf036/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-DerefFreeMemtrack-64bit-Automizer_Default.epf [2024-11-28 02:40:09,068 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-28 02:40:09,068 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-28 02:40:09,120 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-28 02:40:09,121 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-28 02:40:09,121 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-28 02:40:09,121 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-28 02:40:09,123 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-28 02:40:09,124 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-28 02:40:09,124 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-28 02:40:09,125 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-28 02:40:09,125 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-28 02:40:09,125 INFO L153 SettingsManager]: * Use SBE=true [2024-11-28 02:40:09,125 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-28 02:40:09,125 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-28 02:40:09,125 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-28 02:40:09,126 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-11-28 02:40:09,126 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-11-28 02:40:09,126 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-11-28 02:40:09,126 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-28 02:40:09,126 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-28 02:40:09,126 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-28 02:40:09,126 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-28 02:40:09,126 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-28 02:40:09,127 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-28 02:40:09,127 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 02:40:09,127 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 02:40:09,127 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 02:40:09,127 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 02:40:09,127 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-28 02:40:09,127 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 02:40:09,127 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 02:40:09,129 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 02:40:09,129 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 02:40:09,129 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-28 02:40:09,129 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-28 02:40:09,129 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-28 02:40:09,129 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-28 02:40:09,130 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-28 02:40:09,130 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-28 02:40:09,130 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-28 02:40:09,130 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-28 02:40:09,130 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_59a5a86a-8c5e-4252-a362-5ace54fdf036/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 -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e2bb1828824fef1ebc4678312eafda6c009efcfccb4cbbca24aec817e45186ea [2024-11-28 02:40:09,544 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-28 02:40:09,561 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-28 02:40:09,566 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-28 02:40:09,568 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-28 02:40:09,568 INFO L274 PluginConnector]: CDTParser initialized [2024-11-28 02:40:09,572 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59a5a86a-8c5e-4252-a362-5ace54fdf036/bin/uautomizer-verify-aQ6SnzHsRB/../../sv-benchmarks/c/memsafety-broom/sll-nested-linux-list.i [2024-11-28 02:40:13,508 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59a5a86a-8c5e-4252-a362-5ace54fdf036/bin/uautomizer-verify-aQ6SnzHsRB/data/ab7faff35/07d8b2f8da994f93b6abb67eba3bc5db/FLAGf6e729273 [2024-11-28 02:40:14,040 INFO L384 CDTParser]: Found 1 translation units. [2024-11-28 02:40:14,041 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59a5a86a-8c5e-4252-a362-5ace54fdf036/sv-benchmarks/c/memsafety-broom/sll-nested-linux-list.i [2024-11-28 02:40:14,085 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59a5a86a-8c5e-4252-a362-5ace54fdf036/bin/uautomizer-verify-aQ6SnzHsRB/data/ab7faff35/07d8b2f8da994f93b6abb67eba3bc5db/FLAGf6e729273 [2024-11-28 02:40:14,109 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59a5a86a-8c5e-4252-a362-5ace54fdf036/bin/uautomizer-verify-aQ6SnzHsRB/data/ab7faff35/07d8b2f8da994f93b6abb67eba3bc5db [2024-11-28 02:40:14,112 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-28 02:40:14,114 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-28 02:40:14,116 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-28 02:40:14,116 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-28 02:40:14,123 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-28 02:40:14,124 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 02:40:14" (1/1) ... [2024-11-28 02:40:14,126 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6195d808 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:40:14, skipping insertion in model container [2024-11-28 02:40:14,126 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 02:40:14" (1/1) ... [2024-11-28 02:40:14,199 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-28 02:40:14,643 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 02:40:14,657 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 02:40:14,658 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@34674e66 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:40:14, skipping insertion in model container [2024-11-28 02:40:14,658 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-28 02:40:14,659 INFO L186 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2024-11-28 02:40:14,661 INFO L158 Benchmark]: Toolchain (without parser) took 546.34ms. Allocated memory is still 117.4MB. Free memory was 91.3MB in the beginning and 76.6MB in the end (delta: 14.6MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2024-11-28 02:40:14,662 INFO L158 Benchmark]: CDTParser took 0.43ms. Allocated memory is still 117.4MB. Free memory is still 73.9MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-28 02:40:14,663 INFO L158 Benchmark]: CACSL2BoogieTranslator took 542.71ms. Allocated memory is still 117.4MB. Free memory was 91.1MB in the beginning and 76.6MB in the end (delta: 14.5MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2024-11-28 02:40:14,664 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.43ms. Allocated memory is still 117.4MB. Free memory is still 73.9MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 542.71ms. Allocated memory is still 117.4MB. Free memory was 91.1MB in the beginning and 76.6MB in the end (delta: 14.5MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 2513]: 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_59a5a86a-8c5e-4252-a362-5ace54fdf036/bin/uautomizer-verify-aQ6SnzHsRB/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59a5a86a-8c5e-4252-a362-5ace54fdf036/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_59a5a86a-8c5e-4252-a362-5ace54fdf036/bin/uautomizer-verify-aQ6SnzHsRB/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59a5a86a-8c5e-4252-a362-5ace54fdf036/bin/uautomizer-verify-aQ6SnzHsRB/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/memsafety-broom/sll-nested-linux-list.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59a5a86a-8c5e-4252-a362-5ace54fdf036/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-DerefFreeMemtrack-64bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59a5a86a-8c5e-4252-a362-5ace54fdf036/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 64bit --witnessprinter.graph.data.programhash e2bb1828824fef1ebc4678312eafda6c009efcfccb4cbbca24aec817e45186ea --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-11-28 02:40:17,906 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-28 02:40:18,036 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59a5a86a-8c5e-4252-a362-5ace54fdf036/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-DerefFreeMemtrack-64bit-Automizer_Bitvector.epf [2024-11-28 02:40:18,044 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-28 02:40:18,044 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-28 02:40:18,106 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-28 02:40:18,108 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-28 02:40:18,109 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-28 02:40:18,109 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-28 02:40:18,110 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-28 02:40:18,111 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-28 02:40:18,111 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-28 02:40:18,112 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-28 02:40:18,112 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-28 02:40:18,112 INFO L153 SettingsManager]: * Use SBE=true [2024-11-28 02:40:18,113 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-28 02:40:18,113 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-28 02:40:18,114 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-28 02:40:18,114 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-11-28 02:40:18,115 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-11-28 02:40:18,115 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-11-28 02:40:18,115 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-28 02:40:18,115 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-28 02:40:18,115 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2024-11-28 02:40:18,115 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2024-11-28 02:40:18,116 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-28 02:40:18,116 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-28 02:40:18,116 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-28 02:40:18,116 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-28 02:40:18,116 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 02:40:18,116 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 02:40:18,117 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 02:40:18,117 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 02:40:18,117 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-28 02:40:18,118 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 02:40:18,118 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 02:40:18,118 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 02:40:18,119 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 02:40:18,119 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-28 02:40:18,119 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-28 02:40:18,119 INFO L153 SettingsManager]: * Trace refinement strategy=FOX [2024-11-28 02:40:18,120 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2024-11-28 02:40:18,120 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-28 02:40:18,120 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-28 02:40:18,120 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-28 02:40:18,121 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-28 02:40:18,121 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_59a5a86a-8c5e-4252-a362-5ace54fdf036/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 -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e2bb1828824fef1ebc4678312eafda6c009efcfccb4cbbca24aec817e45186ea [2024-11-28 02:40:18,577 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-28 02:40:18,592 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-28 02:40:18,595 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-28 02:40:18,601 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-28 02:40:18,601 INFO L274 PluginConnector]: CDTParser initialized [2024-11-28 02:40:18,605 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59a5a86a-8c5e-4252-a362-5ace54fdf036/bin/uautomizer-verify-aQ6SnzHsRB/../../sv-benchmarks/c/memsafety-broom/sll-nested-linux-list.i [2024-11-28 02:40:22,540 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59a5a86a-8c5e-4252-a362-5ace54fdf036/bin/uautomizer-verify-aQ6SnzHsRB/data/b990d6a3a/6437cd934dec436da56e48fab49c3e6b/FLAG787d45e87 [2024-11-28 02:40:23,129 INFO L384 CDTParser]: Found 1 translation units. [2024-11-28 02:40:23,130 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59a5a86a-8c5e-4252-a362-5ace54fdf036/sv-benchmarks/c/memsafety-broom/sll-nested-linux-list.i [2024-11-28 02:40:23,188 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59a5a86a-8c5e-4252-a362-5ace54fdf036/bin/uautomizer-verify-aQ6SnzHsRB/data/b990d6a3a/6437cd934dec436da56e48fab49c3e6b/FLAG787d45e87 [2024-11-28 02:40:23,654 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59a5a86a-8c5e-4252-a362-5ace54fdf036/bin/uautomizer-verify-aQ6SnzHsRB/data/b990d6a3a/6437cd934dec436da56e48fab49c3e6b [2024-11-28 02:40:23,657 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-28 02:40:23,659 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-28 02:40:23,661 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-28 02:40:23,661 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-28 02:40:23,668 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-28 02:40:23,669 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 02:40:23" (1/1) ... [2024-11-28 02:40:23,670 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@306cebda and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:40:23, skipping insertion in model container [2024-11-28 02:40:23,670 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 02:40:23" (1/1) ... [2024-11-28 02:40:23,741 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-28 02:40:24,168 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 02:40:24,191 INFO L197 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2024-11-28 02:40:24,211 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-28 02:40:24,281 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 02:40:24,287 INFO L200 MainTranslator]: Completed pre-run [2024-11-28 02:40:24,403 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 02:40:24,465 INFO L204 MainTranslator]: Completed translation [2024-11-28 02:40:24,467 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:40:24 WrapperNode [2024-11-28 02:40:24,467 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-28 02:40:24,468 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-28 02:40:24,469 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-28 02:40:24,469 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-28 02:40:24,482 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:40:24" (1/1) ... [2024-11-28 02:40:24,513 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:40:24" (1/1) ... [2024-11-28 02:40:24,569 INFO L138 Inliner]: procedures = 129, calls = 45, calls flagged for inlining = 12, calls inlined = 12, statements flattened = 129 [2024-11-28 02:40:24,569 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-28 02:40:24,570 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-28 02:40:24,570 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-28 02:40:24,570 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-28 02:40:24,597 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:40:24" (1/1) ... [2024-11-28 02:40:24,597 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:40:24" (1/1) ... [2024-11-28 02:40:24,606 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:40:24" (1/1) ... [2024-11-28 02:40:24,668 INFO L175 MemorySlicer]: Split 25 memory accesses to 1 slices as follows [25]. 100 percent of accesses are in the largest equivalence class. The 0 initializations are split as follows [0]. The 13 writes are split as follows [13]. [2024-11-28 02:40:24,669 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:40:24" (1/1) ... [2024-11-28 02:40:24,669 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:40:24" (1/1) ... [2024-11-28 02:40:24,696 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:40:24" (1/1) ... [2024-11-28 02:40:24,697 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:40:24" (1/1) ... [2024-11-28 02:40:24,706 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:40:24" (1/1) ... [2024-11-28 02:40:24,711 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:40:24" (1/1) ... [2024-11-28 02:40:24,712 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:40:24" (1/1) ... [2024-11-28 02:40:24,720 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-28 02:40:24,724 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-28 02:40:24,724 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-28 02:40:24,724 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-28 02:40:24,725 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:40:24" (1/1) ... [2024-11-28 02:40:24,735 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 02:40:24,754 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59a5a86a-8c5e-4252-a362-5ace54fdf036/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:40:24,774 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59a5a86a-8c5e-4252-a362-5ace54fdf036/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-28 02:40:24,778 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59a5a86a-8c5e-4252-a362-5ace54fdf036/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-28 02:40:24,817 INFO L130 BoogieDeclarations]: Found specification of procedure create_internal [2024-11-28 02:40:24,817 INFO L138 BoogieDeclarations]: Found implementation of procedure create_internal [2024-11-28 02:40:24,817 INFO L130 BoogieDeclarations]: Found specification of procedure alloc_and_zero [2024-11-28 02:40:24,817 INFO L138 BoogieDeclarations]: Found implementation of procedure alloc_and_zero [2024-11-28 02:40:24,817 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-28 02:40:24,818 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2024-11-28 02:40:24,818 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2024-11-28 02:40:24,819 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-28 02:40:24,819 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#0 [2024-11-28 02:40:24,819 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-28 02:40:24,819 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-28 02:40:25,057 INFO L234 CfgBuilder]: Building ICFG [2024-11-28 02:40:25,060 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-28 02:40:26,252 INFO L? ?]: Removed 172 outVars from TransFormulas that were not future-live. [2024-11-28 02:40:26,253 INFO L283 CfgBuilder]: Performing block encoding [2024-11-28 02:40:26,269 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-28 02:40:26,269 INFO L312 CfgBuilder]: Removed 7 assume(true) statements. [2024-11-28 02:40:26,270 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 02:40:26 BoogieIcfgContainer [2024-11-28 02:40:26,270 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-28 02:40:26,273 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-28 02:40:26,273 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-28 02:40:26,280 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-28 02:40:26,280 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 02:40:23" (1/3) ... [2024-11-28 02:40:26,281 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7814e807 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 02:40:26, skipping insertion in model container [2024-11-28 02:40:26,282 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:40:24" (2/3) ... [2024-11-28 02:40:26,282 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7814e807 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 02:40:26, skipping insertion in model container [2024-11-28 02:40:26,282 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 02:40:26" (3/3) ... [2024-11-28 02:40:26,284 INFO L128 eAbstractionObserver]: Analyzing ICFG sll-nested-linux-list.i [2024-11-28 02:40:26,304 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-28 02:40:26,306 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG sll-nested-linux-list.i that has 3 procedures, 142 locations, 1 initial locations, 7 loop locations, and 57 error locations. [2024-11-28 02:40:26,369 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-28 02:40:26,392 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;@463c4730, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-28 02:40:26,395 INFO L334 AbstractCegarLoop]: Starting to check reachability of 57 error locations. [2024-11-28 02:40:26,402 INFO L276 IsEmpty]: Start isEmpty. Operand has 142 states, 78 states have (on average 1.9102564102564104) internal successors, (149), 136 states have internal predecessors, (149), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2024-11-28 02:40:26,411 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2024-11-28 02:40:26,412 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:40:26,412 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2024-11-28 02:40:26,413 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 54 more)] === [2024-11-28 02:40:26,421 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:40:26,422 INFO L85 PathProgramCache]: Analyzing trace with hash 51783487, now seen corresponding path program 1 times [2024-11-28 02:40:26,435 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 02:40:26,435 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1327794582] [2024-11-28 02:40:26,436 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:40:26,436 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:40:26,436 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59a5a86a-8c5e-4252-a362-5ace54fdf036/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:40:26,439 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59a5a86a-8c5e-4252-a362-5ace54fdf036/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:40:26,444 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59a5a86a-8c5e-4252-a362-5ace54fdf036/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-28 02:40:26,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:40:26,584 INFO L256 TraceCheckSpWp]: Trace formula consists of 26 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-28 02:40:26,594 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:40:26,679 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 02:40:26,719 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 02:40:26,719 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 02:40:26,720 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 02:40:26,721 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1327794582] [2024-11-28 02:40:26,722 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1327794582] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:40:26,722 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:40:26,723 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-28 02:40:26,725 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [84757770] [2024-11-28 02:40:26,726 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:40:26,730 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 02:40:26,731 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 02:40:26,768 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 02:40:26,769 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 02:40:26,773 INFO L87 Difference]: Start difference. First operand has 142 states, 78 states have (on average 1.9102564102564104) internal successors, (149), 136 states have internal predecessors, (149), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Second operand has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:40:27,301 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:40:27,302 INFO L93 Difference]: Finished difference Result 139 states and 146 transitions. [2024-11-28 02:40:27,303 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 02:40:27,305 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2024-11-28 02:40:27,306 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:40:27,314 INFO L225 Difference]: With dead ends: 139 [2024-11-28 02:40:27,315 INFO L226 Difference]: Without dead ends: 137 [2024-11-28 02:40:27,317 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 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 02:40:27,321 INFO L435 NwaCegarLoop]: 139 mSDtfsCounter, 4 mSDsluCounter, 84 mSDsCounter, 0 mSdLazyCounter, 64 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 223 SdHoareTripleChecker+Invalid, 66 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 64 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-28 02:40:27,322 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 223 Invalid, 66 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 64 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-28 02:40:27,341 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137 states. [2024-11-28 02:40:27,380 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 137 to 137. [2024-11-28 02:40:27,382 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 137 states, 77 states have (on average 1.7662337662337662) internal successors, (136), 131 states have internal predecessors, (136), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2024-11-28 02:40:27,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137 states to 137 states and 144 transitions. [2024-11-28 02:40:27,390 INFO L78 Accepts]: Start accepts. Automaton has 137 states and 144 transitions. Word has length 5 [2024-11-28 02:40:27,391 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:40:27,391 INFO L471 AbstractCegarLoop]: Abstraction has 137 states and 144 transitions. [2024-11-28 02:40:27,391 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:40:27,391 INFO L276 IsEmpty]: Start isEmpty. Operand 137 states and 144 transitions. [2024-11-28 02:40:27,392 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2024-11-28 02:40:27,392 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:40:27,392 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2024-11-28 02:40:27,407 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59a5a86a-8c5e-4252-a362-5ace54fdf036/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-28 02:40:27,597 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59a5a86a-8c5e-4252-a362-5ace54fdf036/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:40:27,597 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 54 more)] === [2024-11-28 02:40:27,598 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:40:27,598 INFO L85 PathProgramCache]: Analyzing trace with hash 51783488, now seen corresponding path program 1 times [2024-11-28 02:40:27,598 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 02:40:27,599 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [526345766] [2024-11-28 02:40:27,599 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:40:27,599 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:40:27,599 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59a5a86a-8c5e-4252-a362-5ace54fdf036/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:40:27,602 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59a5a86a-8c5e-4252-a362-5ace54fdf036/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:40:27,603 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59a5a86a-8c5e-4252-a362-5ace54fdf036/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-28 02:40:27,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:40:27,726 INFO L256 TraceCheckSpWp]: Trace formula consists of 26 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-28 02:40:27,729 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:40:27,749 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 02:40:27,776 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 02:40:27,776 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 02:40:27,777 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 02:40:27,777 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [526345766] [2024-11-28 02:40:27,777 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [526345766] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:40:27,779 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:40:27,779 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-28 02:40:27,779 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1617325288] [2024-11-28 02:40:27,779 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:40:27,781 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 02:40:27,781 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 02:40:27,784 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 02:40:27,784 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 02:40:27,785 INFO L87 Difference]: Start difference. First operand 137 states and 144 transitions. Second operand has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:40:28,493 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:40:28,493 INFO L93 Difference]: Finished difference Result 134 states and 141 transitions. [2024-11-28 02:40:28,495 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 02:40:28,495 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2024-11-28 02:40:28,495 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:40:28,496 INFO L225 Difference]: With dead ends: 134 [2024-11-28 02:40:28,496 INFO L226 Difference]: Without dead ends: 134 [2024-11-28 02:40:28,497 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 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 02:40:28,498 INFO L435 NwaCegarLoop]: 137 mSDtfsCounter, 4 mSDsluCounter, 90 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 227 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-28 02:40:28,498 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 227 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-28 02:40:28,502 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134 states. [2024-11-28 02:40:28,515 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134 to 134. [2024-11-28 02:40:28,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 134 states, 77 states have (on average 1.7272727272727273) internal successors, (133), 128 states have internal predecessors, (133), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2024-11-28 02:40:28,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134 states to 134 states and 141 transitions. [2024-11-28 02:40:28,523 INFO L78 Accepts]: Start accepts. Automaton has 134 states and 141 transitions. Word has length 5 [2024-11-28 02:40:28,523 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:40:28,523 INFO L471 AbstractCegarLoop]: Abstraction has 134 states and 141 transitions. [2024-11-28 02:40:28,524 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:40:28,524 INFO L276 IsEmpty]: Start isEmpty. Operand 134 states and 141 transitions. [2024-11-28 02:40:28,524 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2024-11-28 02:40:28,525 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:40:28,525 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:40:28,539 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59a5a86a-8c5e-4252-a362-5ace54fdf036/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-28 02:40:28,725 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59a5a86a-8c5e-4252-a362-5ace54fdf036/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:40:28,726 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting create_internalErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 54 more)] === [2024-11-28 02:40:28,726 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:40:28,727 INFO L85 PathProgramCache]: Analyzing trace with hash 1450879143, now seen corresponding path program 1 times [2024-11-28 02:40:28,727 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 02:40:28,728 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1336232668] [2024-11-28 02:40:28,729 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:40:28,730 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:40:28,730 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59a5a86a-8c5e-4252-a362-5ace54fdf036/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:40:28,735 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59a5a86a-8c5e-4252-a362-5ace54fdf036/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:40:28,737 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59a5a86a-8c5e-4252-a362-5ace54fdf036/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-28 02:40:28,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:40:28,874 INFO L256 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-28 02:40:28,877 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:40:28,887 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 02:40:28,900 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 02:40:28,900 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 02:40:28,900 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 02:40:28,900 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1336232668] [2024-11-28 02:40:28,901 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1336232668] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:40:28,901 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:40:28,901 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-28 02:40:28,901 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [439359068] [2024-11-28 02:40:28,901 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:40:28,901 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 02:40:28,902 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 02:40:28,903 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 02:40:28,903 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 02:40:28,903 INFO L87 Difference]: Start difference. First operand 134 states and 141 transitions. Second operand has 3 states, 2 states have (on average 7.5) internal successors, (15), 3 states have internal predecessors, (15), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-28 02:40:29,373 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:40:29,373 INFO L93 Difference]: Finished difference Result 133 states and 140 transitions. [2024-11-28 02:40:29,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 02:40:29,374 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 7.5) internal successors, (15), 3 states have internal predecessors, (15), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 18 [2024-11-28 02:40:29,374 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:40:29,375 INFO L225 Difference]: With dead ends: 133 [2024-11-28 02:40:29,376 INFO L226 Difference]: Without dead ends: 133 [2024-11-28 02:40:29,376 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 16 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 02:40:29,377 INFO L435 NwaCegarLoop]: 137 mSDtfsCounter, 1 mSDsluCounter, 82 mSDsCounter, 0 mSdLazyCounter, 59 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 219 SdHoareTripleChecker+Invalid, 59 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 59 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-28 02:40:29,378 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 219 Invalid, 59 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 59 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-28 02:40:29,379 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133 states. [2024-11-28 02:40:29,385 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133 to 133. [2024-11-28 02:40:29,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 133 states, 77 states have (on average 1.7142857142857142) internal successors, (132), 127 states have internal predecessors, (132), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2024-11-28 02:40:29,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 140 transitions. [2024-11-28 02:40:29,388 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 140 transitions. Word has length 18 [2024-11-28 02:40:29,389 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:40:29,389 INFO L471 AbstractCegarLoop]: Abstraction has 133 states and 140 transitions. [2024-11-28 02:40:29,390 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 7.5) internal successors, (15), 3 states have internal predecessors, (15), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-28 02:40:29,390 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 140 transitions. [2024-11-28 02:40:29,390 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2024-11-28 02:40:29,390 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:40:29,390 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:40:29,403 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59a5a86a-8c5e-4252-a362-5ace54fdf036/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-11-28 02:40:29,591 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59a5a86a-8c5e-4252-a362-5ace54fdf036/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:40:29,592 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting create_internalErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 54 more)] === [2024-11-28 02:40:29,592 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:40:29,592 INFO L85 PathProgramCache]: Analyzing trace with hash 1450879144, now seen corresponding path program 1 times [2024-11-28 02:40:29,593 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 02:40:29,593 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1964347343] [2024-11-28 02:40:29,593 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:40:29,593 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:40:29,593 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59a5a86a-8c5e-4252-a362-5ace54fdf036/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:40:29,596 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59a5a86a-8c5e-4252-a362-5ace54fdf036/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:40:29,600 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59a5a86a-8c5e-4252-a362-5ace54fdf036/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-28 02:40:29,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:40:29,732 INFO L256 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-28 02:40:29,734 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:40:29,757 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 02:40:29,786 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 02:40:29,786 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 02:40:29,786 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 02:40:29,786 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1964347343] [2024-11-28 02:40:29,786 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1964347343] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:40:29,786 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:40:29,787 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-28 02:40:29,787 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1673274977] [2024-11-28 02:40:29,787 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:40:29,787 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 02:40:29,787 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 02:40:29,788 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 02:40:29,788 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 02:40:29,788 INFO L87 Difference]: Start difference. First operand 133 states and 140 transitions. Second operand has 3 states, 2 states have (on average 7.5) internal successors, (15), 3 states have internal predecessors, (15), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-28 02:40:30,333 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:40:30,333 INFO L93 Difference]: Finished difference Result 132 states and 139 transitions. [2024-11-28 02:40:30,335 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 02:40:30,335 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 7.5) internal successors, (15), 3 states have internal predecessors, (15), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 18 [2024-11-28 02:40:30,336 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:40:30,339 INFO L225 Difference]: With dead ends: 132 [2024-11-28 02:40:30,340 INFO L226 Difference]: Without dead ends: 132 [2024-11-28 02:40:30,340 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 16 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 02:40:30,343 INFO L435 NwaCegarLoop]: 137 mSDtfsCounter, 1 mSDsluCounter, 89 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 226 SdHoareTripleChecker+Invalid, 50 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-28 02:40:30,345 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 226 Invalid, 50 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-28 02:40:30,346 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132 states. [2024-11-28 02:40:30,360 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132 to 132. [2024-11-28 02:40:30,361 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 132 states, 77 states have (on average 1.7012987012987013) internal successors, (131), 126 states have internal predecessors, (131), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2024-11-28 02:40:30,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132 states to 132 states and 139 transitions. [2024-11-28 02:40:30,367 INFO L78 Accepts]: Start accepts. Automaton has 132 states and 139 transitions. Word has length 18 [2024-11-28 02:40:30,367 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:40:30,367 INFO L471 AbstractCegarLoop]: Abstraction has 132 states and 139 transitions. [2024-11-28 02:40:30,367 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 7.5) internal successors, (15), 3 states have internal predecessors, (15), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-28 02:40:30,367 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states and 139 transitions. [2024-11-28 02:40:30,368 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2024-11-28 02:40:30,368 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:40:30,368 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:40:30,383 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59a5a86a-8c5e-4252-a362-5ace54fdf036/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-11-28 02:40:30,569 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59a5a86a-8c5e-4252-a362-5ace54fdf036/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:40:30,569 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting create_internalErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 54 more)] === [2024-11-28 02:40:30,570 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:40:30,570 INFO L85 PathProgramCache]: Analyzing trace with hash -1569509368, now seen corresponding path program 1 times [2024-11-28 02:40:30,570 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 02:40:30,571 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1785805735] [2024-11-28 02:40:30,571 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:40:30,571 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:40:30,571 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59a5a86a-8c5e-4252-a362-5ace54fdf036/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:40:30,576 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59a5a86a-8c5e-4252-a362-5ace54fdf036/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:40:30,577 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59a5a86a-8c5e-4252-a362-5ace54fdf036/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-28 02:40:30,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:40:30,725 INFO L256 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-28 02:40:30,728 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:40:30,941 INFO L349 Elim1Store]: treesize reduction 24, result has 33.3 percent of original size [2024-11-28 02:40:30,941 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 21 treesize of output 20 [2024-11-28 02:40:30,986 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 02:40:30,987 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 02:40:30,987 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 02:40:30,987 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1785805735] [2024-11-28 02:40:30,987 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1785805735] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:40:30,987 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:40:30,988 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-28 02:40:30,988 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1139012842] [2024-11-28 02:40:30,988 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:40:30,988 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-28 02:40:30,989 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 02:40:30,989 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-28 02:40:30,989 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2024-11-28 02:40:30,990 INFO L87 Difference]: Start difference. First operand 132 states and 139 transitions. Second operand has 9 states, 7 states have (on average 2.4285714285714284) internal successors, (17), 7 states have internal predecessors, (17), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-28 02:40:32,515 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:40:32,516 INFO L93 Difference]: Finished difference Result 161 states and 170 transitions. [2024-11-28 02:40:32,516 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-28 02:40:32,517 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 7 states have (on average 2.4285714285714284) internal successors, (17), 7 states have internal predecessors, (17), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 20 [2024-11-28 02:40:32,517 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:40:32,520 INFO L225 Difference]: With dead ends: 161 [2024-11-28 02:40:32,520 INFO L226 Difference]: Without dead ends: 161 [2024-11-28 02:40:32,520 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-11-28 02:40:32,521 INFO L435 NwaCegarLoop]: 115 mSDtfsCounter, 51 mSDsluCounter, 490 mSDsCounter, 0 mSdLazyCounter, 484 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 51 SdHoareTripleChecker+Valid, 605 SdHoareTripleChecker+Invalid, 490 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 484 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2024-11-28 02:40:32,522 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [51 Valid, 605 Invalid, 490 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 484 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2024-11-28 02:40:32,523 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 161 states. [2024-11-28 02:40:32,532 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 161 to 147. [2024-11-28 02:40:32,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 147 states, 92 states have (on average 1.684782608695652) internal successors, (155), 140 states have internal predecessors, (155), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2024-11-28 02:40:32,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147 states to 147 states and 163 transitions. [2024-11-28 02:40:32,535 INFO L78 Accepts]: Start accepts. Automaton has 147 states and 163 transitions. Word has length 20 [2024-11-28 02:40:32,536 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:40:32,536 INFO L471 AbstractCegarLoop]: Abstraction has 147 states and 163 transitions. [2024-11-28 02:40:32,536 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 7 states have (on average 2.4285714285714284) internal successors, (17), 7 states have internal predecessors, (17), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-28 02:40:32,536 INFO L276 IsEmpty]: Start isEmpty. Operand 147 states and 163 transitions. [2024-11-28 02:40:32,537 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2024-11-28 02:40:32,537 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:40:32,537 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:40:32,550 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59a5a86a-8c5e-4252-a362-5ace54fdf036/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-28 02:40:32,738 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59a5a86a-8c5e-4252-a362-5ace54fdf036/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:40:32,738 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting create_internalErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 54 more)] === [2024-11-28 02:40:32,739 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:40:32,739 INFO L85 PathProgramCache]: Analyzing trace with hash -1569509367, now seen corresponding path program 1 times [2024-11-28 02:40:32,739 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 02:40:32,739 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1933143828] [2024-11-28 02:40:32,739 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:40:32,739 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:40:32,739 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59a5a86a-8c5e-4252-a362-5ace54fdf036/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:40:32,741 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59a5a86a-8c5e-4252-a362-5ace54fdf036/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:40:32,743 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59a5a86a-8c5e-4252-a362-5ace54fdf036/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-28 02:40:32,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:40:32,907 INFO L256 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 27 conjuncts are in the unsatisfiable core [2024-11-28 02:40:32,915 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:40:32,933 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 02:40:33,502 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 02:40:33,504 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 02:40:33,526 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2024-11-28 02:40:33,526 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 02:40:33,646 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 02:40:33,647 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 02:40:33,647 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 02:40:33,647 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1933143828] [2024-11-28 02:40:33,647 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1933143828] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:40:33,648 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:40:33,648 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-28 02:40:33,648 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [555643113] [2024-11-28 02:40:33,648 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:40:33,648 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-28 02:40:33,649 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 02:40:33,649 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-28 02:40:33,650 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2024-11-28 02:40:33,650 INFO L87 Difference]: Start difference. First operand 147 states and 163 transitions. Second operand has 11 states, 9 states have (on average 1.8888888888888888) internal successors, (17), 9 states have internal predecessors, (17), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-28 02:40:36,402 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:40:36,402 INFO L93 Difference]: Finished difference Result 160 states and 169 transitions. [2024-11-28 02:40:36,403 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-28 02:40:36,403 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 9 states have (on average 1.8888888888888888) internal successors, (17), 9 states have internal predecessors, (17), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 20 [2024-11-28 02:40:36,403 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:40:36,405 INFO L225 Difference]: With dead ends: 160 [2024-11-28 02:40:36,405 INFO L226 Difference]: Without dead ends: 160 [2024-11-28 02:40:36,405 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2024-11-28 02:40:36,407 INFO L435 NwaCegarLoop]: 114 mSDtfsCounter, 48 mSDsluCounter, 545 mSDsCounter, 0 mSdLazyCounter, 705 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 48 SdHoareTripleChecker+Valid, 659 SdHoareTripleChecker+Invalid, 709 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 705 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2024-11-28 02:40:36,407 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [48 Valid, 659 Invalid, 709 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 705 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2024-11-28 02:40:36,408 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160 states. [2024-11-28 02:40:36,418 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160 to 147. [2024-11-28 02:40:36,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 147 states, 92 states have (on average 1.673913043478261) internal successors, (154), 140 states have internal predecessors, (154), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2024-11-28 02:40:36,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147 states to 147 states and 162 transitions. [2024-11-28 02:40:36,427 INFO L78 Accepts]: Start accepts. Automaton has 147 states and 162 transitions. Word has length 20 [2024-11-28 02:40:36,427 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:40:36,428 INFO L471 AbstractCegarLoop]: Abstraction has 147 states and 162 transitions. [2024-11-28 02:40:36,428 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 9 states have (on average 1.8888888888888888) internal successors, (17), 9 states have internal predecessors, (17), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-28 02:40:36,428 INFO L276 IsEmpty]: Start isEmpty. Operand 147 states and 162 transitions. [2024-11-28 02:40:36,429 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2024-11-28 02:40:36,433 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:40:36,433 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] [2024-11-28 02:40:36,451 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59a5a86a-8c5e-4252-a362-5ace54fdf036/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-28 02:40:36,633 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59a5a86a-8c5e-4252-a362-5ace54fdf036/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:40:36,633 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting create_internalErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 54 more)] === [2024-11-28 02:40:36,634 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:40:36,634 INFO L85 PathProgramCache]: Analyzing trace with hash -764976215, now seen corresponding path program 1 times [2024-11-28 02:40:36,634 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 02:40:36,634 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [76828372] [2024-11-28 02:40:36,634 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:40:36,634 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:40:36,635 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59a5a86a-8c5e-4252-a362-5ace54fdf036/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:40:36,637 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59a5a86a-8c5e-4252-a362-5ace54fdf036/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:40:36,641 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59a5a86a-8c5e-4252-a362-5ace54fdf036/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-28 02:40:36,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:40:36,783 INFO L256 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-28 02:40:36,786 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:40:36,824 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 02:40:36,825 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 02:40:36,825 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 02:40:36,825 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [76828372] [2024-11-28 02:40:36,825 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [76828372] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:40:36,825 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:40:36,825 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 02:40:36,826 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [705707165] [2024-11-28 02:40:36,826 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:40:36,827 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 02:40:36,827 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 02:40:36,828 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 02:40:36,828 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 02:40:36,828 INFO L87 Difference]: Start difference. First operand 147 states and 162 transitions. Second operand has 4 states, 3 states have (on average 6.333333333333333) internal successors, (19), 4 states have internal predecessors, (19), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-28 02:40:37,383 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:40:37,384 INFO L93 Difference]: Finished difference Result 146 states and 160 transitions. [2024-11-28 02:40:37,385 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 02:40:37,385 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 6.333333333333333) internal successors, (19), 4 states have internal predecessors, (19), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 22 [2024-11-28 02:40:37,386 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:40:37,386 INFO L225 Difference]: With dead ends: 146 [2024-11-28 02:40:37,386 INFO L226 Difference]: Without dead ends: 146 [2024-11-28 02:40:37,387 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 19 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 02:40:37,387 INFO L435 NwaCegarLoop]: 132 mSDtfsCounter, 3 mSDsluCounter, 159 mSDsCounter, 0 mSdLazyCounter, 115 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 291 SdHoareTripleChecker+Invalid, 115 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 115 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-28 02:40:37,388 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 291 Invalid, 115 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 115 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-28 02:40:37,389 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2024-11-28 02:40:37,394 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 146. [2024-11-28 02:40:37,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 146 states, 92 states have (on average 1.6521739130434783) internal successors, (152), 139 states have internal predecessors, (152), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2024-11-28 02:40:37,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 160 transitions. [2024-11-28 02:40:37,396 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 160 transitions. Word has length 22 [2024-11-28 02:40:37,396 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:40:37,396 INFO L471 AbstractCegarLoop]: Abstraction has 146 states and 160 transitions. [2024-11-28 02:40:37,397 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 6.333333333333333) internal successors, (19), 4 states have internal predecessors, (19), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-28 02:40:37,397 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 160 transitions. [2024-11-28 02:40:37,398 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2024-11-28 02:40:37,398 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:40:37,398 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] [2024-11-28 02:40:37,413 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59a5a86a-8c5e-4252-a362-5ace54fdf036/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-28 02:40:37,598 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59a5a86a-8c5e-4252-a362-5ace54fdf036/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:40:37,599 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting create_internalErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 54 more)] === [2024-11-28 02:40:37,599 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:40:37,599 INFO L85 PathProgramCache]: Analyzing trace with hash -764976214, now seen corresponding path program 1 times [2024-11-28 02:40:37,600 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 02:40:37,600 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1604565148] [2024-11-28 02:40:37,600 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:40:37,600 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:40:37,600 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59a5a86a-8c5e-4252-a362-5ace54fdf036/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:40:37,603 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59a5a86a-8c5e-4252-a362-5ace54fdf036/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:40:37,606 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59a5a86a-8c5e-4252-a362-5ace54fdf036/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-28 02:40:37,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:40:37,760 INFO L256 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-11-28 02:40:37,775 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:40:38,062 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 02:40:38,062 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 02:40:38,063 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 02:40:38,063 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1604565148] [2024-11-28 02:40:38,063 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1604565148] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:40:38,063 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:40:38,063 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-28 02:40:38,063 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [267760904] [2024-11-28 02:40:38,063 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:40:38,063 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-28 02:40:38,063 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 02:40:38,064 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-28 02:40:38,064 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2024-11-28 02:40:38,064 INFO L87 Difference]: Start difference. First operand 146 states and 160 transitions. Second operand has 11 states, 9 states have (on average 2.111111111111111) internal successors, (19), 9 states have internal predecessors, (19), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-28 02:40:39,278 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:40:39,278 INFO L93 Difference]: Finished difference Result 165 states and 178 transitions. [2024-11-28 02:40:39,279 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-28 02:40:39,279 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 9 states have (on average 2.111111111111111) internal successors, (19), 9 states have internal predecessors, (19), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 22 [2024-11-28 02:40:39,279 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:40:39,280 INFO L225 Difference]: With dead ends: 165 [2024-11-28 02:40:39,280 INFO L226 Difference]: Without dead ends: 165 [2024-11-28 02:40:39,281 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=44, Invalid=166, Unknown=0, NotChecked=0, Total=210 [2024-11-28 02:40:39,281 INFO L435 NwaCegarLoop]: 118 mSDtfsCounter, 52 mSDsluCounter, 987 mSDsCounter, 0 mSdLazyCounter, 254 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 55 SdHoareTripleChecker+Valid, 1105 SdHoareTripleChecker+Invalid, 254 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 254 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-11-28 02:40:39,282 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [55 Valid, 1105 Invalid, 254 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 254 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-11-28 02:40:39,284 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 165 states. [2024-11-28 02:40:39,292 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 165 to 146. [2024-11-28 02:40:39,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 146 states, 92 states have (on average 1.641304347826087) internal successors, (151), 139 states have internal predecessors, (151), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2024-11-28 02:40:39,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 159 transitions. [2024-11-28 02:40:39,298 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 159 transitions. Word has length 22 [2024-11-28 02:40:39,298 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:40:39,300 INFO L471 AbstractCegarLoop]: Abstraction has 146 states and 159 transitions. [2024-11-28 02:40:39,300 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 9 states have (on average 2.111111111111111) internal successors, (19), 9 states have internal predecessors, (19), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-28 02:40:39,301 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 159 transitions. [2024-11-28 02:40:39,301 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2024-11-28 02:40:39,302 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:40:39,302 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] [2024-11-28 02:40:39,317 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59a5a86a-8c5e-4252-a362-5ace54fdf036/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-11-28 02:40:39,502 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59a5a86a-8c5e-4252-a362-5ace54fdf036/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:40:39,503 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting create_internalErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 54 more)] === [2024-11-28 02:40:39,503 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:40:39,503 INFO L85 PathProgramCache]: Analyzing trace with hash 2055541288, now seen corresponding path program 1 times [2024-11-28 02:40:39,504 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 02:40:39,504 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [913397324] [2024-11-28 02:40:39,504 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:40:39,504 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:40:39,504 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59a5a86a-8c5e-4252-a362-5ace54fdf036/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:40:39,506 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59a5a86a-8c5e-4252-a362-5ace54fdf036/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:40:39,510 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59a5a86a-8c5e-4252-a362-5ace54fdf036/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-28 02:40:39,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:40:39,665 INFO L256 TraceCheckSpWp]: Trace formula consists of 160 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-28 02:40:39,668 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:40:39,678 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 02:40:39,733 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 02:40:39,734 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 02:40:39,734 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 02:40:39,734 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [913397324] [2024-11-28 02:40:39,734 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [913397324] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:40:39,734 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:40:39,734 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-28 02:40:39,735 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1889018964] [2024-11-28 02:40:39,735 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:40:39,735 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-28 02:40:39,735 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 02:40:39,736 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-28 02:40:39,736 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-28 02:40:39,736 INFO L87 Difference]: Start difference. First operand 146 states and 159 transitions. Second operand has 5 states, 4 states have (on average 5.0) internal successors, (20), 5 states have internal predecessors, (20), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-28 02:40:40,416 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:40:40,416 INFO L93 Difference]: Finished difference Result 144 states and 155 transitions. [2024-11-28 02:40:40,417 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 02:40:40,417 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 5.0) internal successors, (20), 5 states have internal predecessors, (20), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 23 [2024-11-28 02:40:40,418 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:40:40,418 INFO L225 Difference]: With dead ends: 144 [2024-11-28 02:40:40,419 INFO L226 Difference]: Without dead ends: 144 [2024-11-28 02:40:40,419 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-28 02:40:40,420 INFO L435 NwaCegarLoop]: 123 mSDtfsCounter, 7 mSDsluCounter, 234 mSDsCounter, 0 mSdLazyCounter, 170 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 357 SdHoareTripleChecker+Invalid, 171 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 170 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-28 02:40:40,420 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 357 Invalid, 171 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 170 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-28 02:40:40,421 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2024-11-28 02:40:40,425 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 144. [2024-11-28 02:40:40,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 144 states, 92 states have (on average 1.5978260869565217) internal successors, (147), 137 states have internal predecessors, (147), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2024-11-28 02:40:40,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 155 transitions. [2024-11-28 02:40:40,429 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 155 transitions. Word has length 23 [2024-11-28 02:40:40,429 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:40:40,429 INFO L471 AbstractCegarLoop]: Abstraction has 144 states and 155 transitions. [2024-11-28 02:40:40,430 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 5.0) internal successors, (20), 5 states have internal predecessors, (20), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-28 02:40:40,430 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 155 transitions. [2024-11-28 02:40:40,430 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2024-11-28 02:40:40,430 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:40:40,430 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] [2024-11-28 02:40:40,444 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59a5a86a-8c5e-4252-a362-5ace54fdf036/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2024-11-28 02:40:40,631 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59a5a86a-8c5e-4252-a362-5ace54fdf036/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:40:40,631 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting create_internalErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 54 more)] === [2024-11-28 02:40:40,632 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:40:40,632 INFO L85 PathProgramCache]: Analyzing trace with hash 2055541289, now seen corresponding path program 1 times [2024-11-28 02:40:40,632 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 02:40:40,632 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2134646736] [2024-11-28 02:40:40,632 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:40:40,633 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:40:40,633 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59a5a86a-8c5e-4252-a362-5ace54fdf036/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:40:40,636 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59a5a86a-8c5e-4252-a362-5ace54fdf036/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:40:40,637 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59a5a86a-8c5e-4252-a362-5ace54fdf036/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-28 02:40:40,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:40:40,799 INFO L256 TraceCheckSpWp]: Trace formula consists of 160 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-28 02:40:40,802 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:40:40,812 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 02:40:40,919 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 02:40:40,919 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 02:40:40,920 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 02:40:40,920 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2134646736] [2024-11-28 02:40:40,920 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2134646736] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:40:40,920 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:40:40,920 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-28 02:40:40,920 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [614646366] [2024-11-28 02:40:40,921 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:40:40,921 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-28 02:40:40,921 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 02:40:40,922 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-28 02:40:40,922 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-28 02:40:40,922 INFO L87 Difference]: Start difference. First operand 144 states and 155 transitions. Second operand has 5 states, 4 states have (on average 5.0) internal successors, (20), 5 states have internal predecessors, (20), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-28 02:40:41,707 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:40:41,707 INFO L93 Difference]: Finished difference Result 142 states and 151 transitions. [2024-11-28 02:40:41,708 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 02:40:41,708 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 5.0) internal successors, (20), 5 states have internal predecessors, (20), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 23 [2024-11-28 02:40:41,709 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:40:41,710 INFO L225 Difference]: With dead ends: 142 [2024-11-28 02:40:41,710 INFO L226 Difference]: Without dead ends: 142 [2024-11-28 02:40:41,710 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-28 02:40:41,711 INFO L435 NwaCegarLoop]: 122 mSDtfsCounter, 7 mSDsluCounter, 250 mSDsCounter, 0 mSdLazyCounter, 147 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 372 SdHoareTripleChecker+Invalid, 148 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 147 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-28 02:40:41,711 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 372 Invalid, 148 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 147 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-28 02:40:41,712 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 142 states. [2024-11-28 02:40:41,715 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 142 to 142. [2024-11-28 02:40:41,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 142 states, 92 states have (on average 1.5543478260869565) internal successors, (143), 135 states have internal predecessors, (143), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2024-11-28 02:40:41,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142 states to 142 states and 151 transitions. [2024-11-28 02:40:41,717 INFO L78 Accepts]: Start accepts. Automaton has 142 states and 151 transitions. Word has length 23 [2024-11-28 02:40:41,717 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:40:41,717 INFO L471 AbstractCegarLoop]: Abstraction has 142 states and 151 transitions. [2024-11-28 02:40:41,718 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 5.0) internal successors, (20), 5 states have internal predecessors, (20), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-28 02:40:41,718 INFO L276 IsEmpty]: Start isEmpty. Operand 142 states and 151 transitions. [2024-11-28 02:40:41,718 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2024-11-28 02:40:41,718 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:40:41,719 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:40:41,728 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59a5a86a-8c5e-4252-a362-5ace54fdf036/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2024-11-28 02:40:41,919 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59a5a86a-8c5e-4252-a362-5ace54fdf036/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:40:41,919 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 54 more)] === [2024-11-28 02:40:41,920 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:40:41,920 INFO L85 PathProgramCache]: Analyzing trace with hash 936622897, now seen corresponding path program 1 times [2024-11-28 02:40:41,920 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 02:40:41,920 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [594153909] [2024-11-28 02:40:41,920 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:40:41,920 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:40:41,920 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59a5a86a-8c5e-4252-a362-5ace54fdf036/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:40:41,922 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59a5a86a-8c5e-4252-a362-5ace54fdf036/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:40:41,924 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59a5a86a-8c5e-4252-a362-5ace54fdf036/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-28 02:40:42,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:40:42,050 INFO L256 TraceCheckSpWp]: Trace formula consists of 108 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-11-28 02:40:42,053 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:40:42,258 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 02:40:42,258 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 02:40:42,258 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 02:40:42,258 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [594153909] [2024-11-28 02:40:42,259 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [594153909] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:40:42,259 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:40:42,259 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-28 02:40:42,259 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [753229017] [2024-11-28 02:40:42,259 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:40:42,259 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-28 02:40:42,260 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 02:40:42,260 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-28 02:40:42,260 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2024-11-28 02:40:42,260 INFO L87 Difference]: Start difference. First operand 142 states and 151 transitions. Second operand has 10 states, 9 states have (on average 2.3333333333333335) internal successors, (21), 9 states have internal predecessors, (21), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-28 02:40:43,747 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:40:43,748 INFO L93 Difference]: Finished difference Result 171 states and 187 transitions. [2024-11-28 02:40:43,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-28 02:40:43,748 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.3333333333333335) internal successors, (21), 9 states have internal predecessors, (21), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 25 [2024-11-28 02:40:43,749 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:40:43,750 INFO L225 Difference]: With dead ends: 171 [2024-11-28 02:40:43,750 INFO L226 Difference]: Without dead ends: 171 [2024-11-28 02:40:43,750 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2024-11-28 02:40:43,750 INFO L435 NwaCegarLoop]: 112 mSDtfsCounter, 32 mSDsluCounter, 508 mSDsCounter, 0 mSdLazyCounter, 554 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 620 SdHoareTripleChecker+Invalid, 561 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 554 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2024-11-28 02:40:43,751 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [32 Valid, 620 Invalid, 561 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 554 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2024-11-28 02:40:43,752 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 171 states. [2024-11-28 02:40:43,756 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 171 to 161. [2024-11-28 02:40:43,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 161 states, 110 states have (on average 1.5363636363636364) internal successors, (169), 153 states have internal predecessors, (169), 4 states have call successors, (4), 3 states have call predecessors, (4), 4 states have return successors, (5), 5 states have call predecessors, (5), 4 states have call successors, (5) [2024-11-28 02:40:43,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 161 states to 161 states and 178 transitions. [2024-11-28 02:40:43,758 INFO L78 Accepts]: Start accepts. Automaton has 161 states and 178 transitions. Word has length 25 [2024-11-28 02:40:43,758 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:40:43,759 INFO L471 AbstractCegarLoop]: Abstraction has 161 states and 178 transitions. [2024-11-28 02:40:43,759 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 2.3333333333333335) internal successors, (21), 9 states have internal predecessors, (21), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-28 02:40:43,759 INFO L276 IsEmpty]: Start isEmpty. Operand 161 states and 178 transitions. [2024-11-28 02:40:43,760 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2024-11-28 02:40:43,760 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:40:43,760 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:40:43,772 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59a5a86a-8c5e-4252-a362-5ace54fdf036/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-11-28 02:40:43,960 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59a5a86a-8c5e-4252-a362-5ace54fdf036/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:40:43,961 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 54 more)] === [2024-11-28 02:40:43,961 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:40:43,961 INFO L85 PathProgramCache]: Analyzing trace with hash 936622898, now seen corresponding path program 1 times [2024-11-28 02:40:43,962 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 02:40:43,962 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1752182069] [2024-11-28 02:40:43,962 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:40:43,962 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:40:43,962 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59a5a86a-8c5e-4252-a362-5ace54fdf036/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:40:43,964 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59a5a86a-8c5e-4252-a362-5ace54fdf036/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:40:43,966 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59a5a86a-8c5e-4252-a362-5ace54fdf036/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-11-28 02:40:44,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:40:44,080 INFO L256 TraceCheckSpWp]: Trace formula consists of 108 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-11-28 02:40:44,082 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:40:44,091 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 02:40:44,445 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 02:40:44,446 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 02:40:44,446 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 02:40:44,446 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1752182069] [2024-11-28 02:40:44,446 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1752182069] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:40:44,446 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:40:44,446 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-28 02:40:44,446 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1250168781] [2024-11-28 02:40:44,446 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:40:44,446 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-28 02:40:44,447 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 02:40:44,447 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-28 02:40:44,447 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2024-11-28 02:40:44,447 INFO L87 Difference]: Start difference. First operand 161 states and 178 transitions. Second operand has 10 states, 9 states have (on average 2.3333333333333335) internal successors, (21), 9 states have internal predecessors, (21), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-28 02:40:46,271 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:40:46,271 INFO L93 Difference]: Finished difference Result 170 states and 185 transitions. [2024-11-28 02:40:46,272 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-28 02:40:46,272 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.3333333333333335) internal successors, (21), 9 states have internal predecessors, (21), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 25 [2024-11-28 02:40:46,273 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:40:46,273 INFO L225 Difference]: With dead ends: 170 [2024-11-28 02:40:46,274 INFO L226 Difference]: Without dead ends: 170 [2024-11-28 02:40:46,274 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2024-11-28 02:40:46,275 INFO L435 NwaCegarLoop]: 115 mSDtfsCounter, 23 mSDsluCounter, 565 mSDsCounter, 0 mSdLazyCounter, 512 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 680 SdHoareTripleChecker+Invalid, 517 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 512 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2024-11-28 02:40:46,275 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 680 Invalid, 517 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 512 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2024-11-28 02:40:46,276 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 170 states. [2024-11-28 02:40:46,280 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 170 to 161. [2024-11-28 02:40:46,281 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 161 states, 110 states have (on average 1.518181818181818) internal successors, (167), 153 states have internal predecessors, (167), 4 states have call successors, (4), 3 states have call predecessors, (4), 4 states have return successors, (5), 5 states have call predecessors, (5), 4 states have call successors, (5) [2024-11-28 02:40:46,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 161 states to 161 states and 176 transitions. [2024-11-28 02:40:46,282 INFO L78 Accepts]: Start accepts. Automaton has 161 states and 176 transitions. Word has length 25 [2024-11-28 02:40:46,283 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:40:46,283 INFO L471 AbstractCegarLoop]: Abstraction has 161 states and 176 transitions. [2024-11-28 02:40:46,283 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 2.3333333333333335) internal successors, (21), 9 states have internal predecessors, (21), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-28 02:40:46,283 INFO L276 IsEmpty]: Start isEmpty. Operand 161 states and 176 transitions. [2024-11-28 02:40:46,285 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2024-11-28 02:40:46,285 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:40:46,286 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:40:46,300 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59a5a86a-8c5e-4252-a362-5ace54fdf036/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2024-11-28 02:40:46,486 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59a5a86a-8c5e-4252-a362-5ace54fdf036/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:40:46,486 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting create_internalErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 54 more)] === [2024-11-28 02:40:46,487 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:40:46,487 INFO L85 PathProgramCache]: Analyzing trace with hash -309772629, now seen corresponding path program 1 times [2024-11-28 02:40:46,487 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 02:40:46,487 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1128381370] [2024-11-28 02:40:46,487 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:40:46,488 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:40:46,488 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59a5a86a-8c5e-4252-a362-5ace54fdf036/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:40:46,490 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59a5a86a-8c5e-4252-a362-5ace54fdf036/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:40:46,505 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59a5a86a-8c5e-4252-a362-5ace54fdf036/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-11-28 02:40:46,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:40:46,677 INFO L256 TraceCheckSpWp]: Trace formula consists of 186 conjuncts, 33 conjuncts are in the unsatisfiable core [2024-11-28 02:40:46,680 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:40:46,726 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-28 02:40:47,121 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2024-11-28 02:40:47,121 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 02:40:47,207 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2024-11-28 02:40:47,342 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 15 treesize of output 7 [2024-11-28 02:40:47,457 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:40:47,457 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 02:40:47,458 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 02:40:47,458 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1128381370] [2024-11-28 02:40:47,458 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1128381370] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:40:47,458 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:40:47,458 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2024-11-28 02:40:47,458 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [907749447] [2024-11-28 02:40:47,458 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:40:47,459 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-28 02:40:47,459 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 02:40:47,459 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-28 02:40:47,460 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=178, Unknown=0, NotChecked=0, Total=210 [2024-11-28 02:40:47,460 INFO L87 Difference]: Start difference. First operand 161 states and 176 transitions. Second operand has 15 states, 13 states have (on average 1.6923076923076923) internal successors, (22), 13 states have internal predecessors, (22), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-28 02:40:50,182 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:40:50,182 INFO L93 Difference]: Finished difference Result 171 states and 188 transitions. [2024-11-28 02:40:50,183 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-28 02:40:50,183 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 13 states have (on average 1.6923076923076923) internal successors, (22), 13 states have internal predecessors, (22), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 25 [2024-11-28 02:40:50,184 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:40:50,185 INFO L225 Difference]: With dead ends: 171 [2024-11-28 02:40:50,185 INFO L226 Difference]: Without dead ends: 171 [2024-11-28 02:40:50,185 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=67, Invalid=353, Unknown=0, NotChecked=0, Total=420 [2024-11-28 02:40:50,186 INFO L435 NwaCegarLoop]: 116 mSDtfsCounter, 15 mSDsluCounter, 935 mSDsCounter, 0 mSdLazyCounter, 669 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 1051 SdHoareTripleChecker+Invalid, 675 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 669 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2024-11-28 02:40:50,186 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 1051 Invalid, 675 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 669 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2024-11-28 02:40:50,187 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 171 states. [2024-11-28 02:40:50,192 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 171 to 170. [2024-11-28 02:40:50,192 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 170 states, 119 states have (on average 1.4873949579831933) internal successors, (177), 162 states have internal predecessors, (177), 4 states have call successors, (4), 3 states have call predecessors, (4), 4 states have return successors, (5), 5 states have call predecessors, (5), 4 states have call successors, (5) [2024-11-28 02:40:50,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 170 states to 170 states and 186 transitions. [2024-11-28 02:40:50,194 INFO L78 Accepts]: Start accepts. Automaton has 170 states and 186 transitions. Word has length 25 [2024-11-28 02:40:50,194 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:40:50,194 INFO L471 AbstractCegarLoop]: Abstraction has 170 states and 186 transitions. [2024-11-28 02:40:50,195 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 13 states have (on average 1.6923076923076923) internal successors, (22), 13 states have internal predecessors, (22), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-28 02:40:50,195 INFO L276 IsEmpty]: Start isEmpty. Operand 170 states and 186 transitions. [2024-11-28 02:40:50,196 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2024-11-28 02:40:50,196 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:40:50,196 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:40:50,212 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59a5a86a-8c5e-4252-a362-5ace54fdf036/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2024-11-28 02:40:50,396 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59a5a86a-8c5e-4252-a362-5ace54fdf036/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:40:50,397 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting create_internalErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 54 more)] === [2024-11-28 02:40:50,397 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:40:50,397 INFO L85 PathProgramCache]: Analyzing trace with hash -309772628, now seen corresponding path program 1 times [2024-11-28 02:40:50,398 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 02:40:50,398 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [837563323] [2024-11-28 02:40:50,398 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:40:50,398 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:40:50,398 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59a5a86a-8c5e-4252-a362-5ace54fdf036/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:40:50,402 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59a5a86a-8c5e-4252-a362-5ace54fdf036/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:40:50,405 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59a5a86a-8c5e-4252-a362-5ace54fdf036/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-11-28 02:40:50,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:40:50,609 INFO L256 TraceCheckSpWp]: Trace formula consists of 186 conjuncts, 46 conjuncts are in the unsatisfiable core [2024-11-28 02:40:50,614 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:40:50,623 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 02:40:50,704 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-28 02:40:50,716 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-28 02:40:51,325 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2024-11-28 02:40:51,326 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 02:40:51,337 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 02:40:51,427 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2024-11-28 02:40:51,435 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2024-11-28 02:40:51,615 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 15 treesize of output 7 [2024-11-28 02:40:51,624 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2024-11-28 02:40:51,762 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 02:40:51,762 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 02:40:51,762 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 02:40:51,762 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [837563323] [2024-11-28 02:40:51,762 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [837563323] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:40:51,762 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:40:51,762 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2024-11-28 02:40:51,763 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [781562244] [2024-11-28 02:40:51,763 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:40:51,763 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-28 02:40:51,763 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 02:40:51,763 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-28 02:40:51,764 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=178, Unknown=0, NotChecked=0, Total=210 [2024-11-28 02:40:51,764 INFO L87 Difference]: Start difference. First operand 170 states and 186 transitions. Second operand has 15 states, 13 states have (on average 1.6923076923076923) internal successors, (22), 13 states have internal predecessors, (22), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-28 02:40:55,190 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:40:55,190 INFO L93 Difference]: Finished difference Result 171 states and 187 transitions. [2024-11-28 02:40:55,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-28 02:40:55,191 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 13 states have (on average 1.6923076923076923) internal successors, (22), 13 states have internal predecessors, (22), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 25 [2024-11-28 02:40:55,191 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:40:55,192 INFO L225 Difference]: With dead ends: 171 [2024-11-28 02:40:55,192 INFO L226 Difference]: Without dead ends: 171 [2024-11-28 02:40:55,192 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=67, Invalid=353, Unknown=0, NotChecked=0, Total=420 [2024-11-28 02:40:55,193 INFO L435 NwaCegarLoop]: 117 mSDtfsCounter, 15 mSDsluCounter, 767 mSDsCounter, 0 mSdLazyCounter, 833 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 884 SdHoareTripleChecker+Invalid, 839 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 833 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2024-11-28 02:40:55,193 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 884 Invalid, 839 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 833 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2024-11-28 02:40:55,194 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 171 states. [2024-11-28 02:40:55,199 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 171 to 170. [2024-11-28 02:40:55,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 170 states, 119 states have (on average 1.4789915966386555) internal successors, (176), 162 states have internal predecessors, (176), 4 states have call successors, (4), 3 states have call predecessors, (4), 4 states have return successors, (5), 5 states have call predecessors, (5), 4 states have call successors, (5) [2024-11-28 02:40:55,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 170 states to 170 states and 185 transitions. [2024-11-28 02:40:55,201 INFO L78 Accepts]: Start accepts. Automaton has 170 states and 185 transitions. Word has length 25 [2024-11-28 02:40:55,201 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:40:55,201 INFO L471 AbstractCegarLoop]: Abstraction has 170 states and 185 transitions. [2024-11-28 02:40:55,201 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 13 states have (on average 1.6923076923076923) internal successors, (22), 13 states have internal predecessors, (22), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-28 02:40:55,202 INFO L276 IsEmpty]: Start isEmpty. Operand 170 states and 185 transitions. [2024-11-28 02:40:55,202 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2024-11-28 02:40:55,203 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:40:55,203 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] [2024-11-28 02:40:55,218 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59a5a86a-8c5e-4252-a362-5ace54fdf036/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2024-11-28 02:40:55,407 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59a5a86a-8c5e-4252-a362-5ace54fdf036/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:40:55,407 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr12REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 54 more)] === [2024-11-28 02:40:55,408 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:40:55,408 INFO L85 PathProgramCache]: Analyzing trace with hash -1029369703, now seen corresponding path program 1 times [2024-11-28 02:40:55,408 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 02:40:55,408 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [153747642] [2024-11-28 02:40:55,408 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:40:55,409 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:40:55,409 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59a5a86a-8c5e-4252-a362-5ace54fdf036/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:40:55,411 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59a5a86a-8c5e-4252-a362-5ace54fdf036/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:40:55,412 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59a5a86a-8c5e-4252-a362-5ace54fdf036/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-11-28 02:40:55,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:40:55,541 INFO L256 TraceCheckSpWp]: Trace formula consists of 110 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-28 02:40:55,543 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:40:55,648 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 02:40:55,648 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 02:40:55,649 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 02:40:55,649 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [153747642] [2024-11-28 02:40:55,649 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [153747642] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:40:55,649 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:40:55,649 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-28 02:40:55,649 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [888608889] [2024-11-28 02:40:55,649 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:40:55,649 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-28 02:40:55,649 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 02:40:55,650 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-28 02:40:55,650 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-28 02:40:55,650 INFO L87 Difference]: Start difference. First operand 170 states and 185 transitions. Second operand has 8 states, 8 states have (on average 2.75) internal successors, (22), 7 states have internal predecessors, (22), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-28 02:40:55,844 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:40:55,844 INFO L93 Difference]: Finished difference Result 185 states and 202 transitions. [2024-11-28 02:40:55,845 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-28 02:40:55,845 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.75) internal successors, (22), 7 states have internal predecessors, (22), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 26 [2024-11-28 02:40:55,846 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:40:55,847 INFO L225 Difference]: With dead ends: 185 [2024-11-28 02:40:55,847 INFO L226 Difference]: Without dead ends: 185 [2024-11-28 02:40:55,847 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-28 02:40:55,848 INFO L435 NwaCegarLoop]: 125 mSDtfsCounter, 27 mSDsluCounter, 719 mSDsCounter, 0 mSdLazyCounter, 85 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 844 SdHoareTripleChecker+Invalid, 85 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 85 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-28 02:40:55,848 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [29 Valid, 844 Invalid, 85 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 85 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-28 02:40:55,849 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 185 states. [2024-11-28 02:40:55,853 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 185 to 171. [2024-11-28 02:40:55,853 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 171 states, 120 states have (on average 1.4666666666666666) internal successors, (176), 163 states have internal predecessors, (176), 4 states have call successors, (4), 3 states have call predecessors, (4), 4 states have return successors, (5), 5 states have call predecessors, (5), 4 states have call successors, (5) [2024-11-28 02:40:55,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 171 states to 171 states and 185 transitions. [2024-11-28 02:40:55,855 INFO L78 Accepts]: Start accepts. Automaton has 171 states and 185 transitions. Word has length 26 [2024-11-28 02:40:55,855 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:40:55,855 INFO L471 AbstractCegarLoop]: Abstraction has 171 states and 185 transitions. [2024-11-28 02:40:55,855 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.75) internal successors, (22), 7 states have internal predecessors, (22), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-28 02:40:55,855 INFO L276 IsEmpty]: Start isEmpty. Operand 171 states and 185 transitions. [2024-11-28 02:40:55,856 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2024-11-28 02:40:55,856 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:40:55,856 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:40:55,867 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59a5a86a-8c5e-4252-a362-5ace54fdf036/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2024-11-28 02:40:56,056 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59a5a86a-8c5e-4252-a362-5ace54fdf036/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:40:56,057 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 54 more)] === [2024-11-28 02:40:56,057 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:40:56,057 INFO L85 PathProgramCache]: Analyzing trace with hash -902102275, now seen corresponding path program 1 times [2024-11-28 02:40:56,057 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 02:40:56,057 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1858696993] [2024-11-28 02:40:56,057 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:40:56,057 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:40:56,057 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59a5a86a-8c5e-4252-a362-5ace54fdf036/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:40:56,059 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59a5a86a-8c5e-4252-a362-5ace54fdf036/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:40:56,061 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59a5a86a-8c5e-4252-a362-5ace54fdf036/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2024-11-28 02:40:56,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:40:56,211 INFO L256 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-28 02:40:56,213 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:40:56,502 INFO L349 Elim1Store]: treesize reduction 24, result has 33.3 percent of original size [2024-11-28 02:40:56,502 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 21 treesize of output 20 [2024-11-28 02:40:56,508 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:40:56,508 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 02:41:05,029 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:41:05,029 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 02:41:05,030 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1858696993] [2024-11-28 02:41:05,030 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1858696993] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 02:41:05,030 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-28 02:41:05,030 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6] total 8 [2024-11-28 02:41:05,030 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1536155049] [2024-11-28 02:41:05,030 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-28 02:41:05,030 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-28 02:41:05,030 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 02:41:05,031 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-28 02:41:05,031 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-11-28 02:41:05,031 INFO L87 Difference]: Start difference. First operand 171 states and 185 transitions. Second operand has 9 states, 8 states have (on average 4.375) internal successors, (35), 8 states have internal predecessors, (35), 2 states have call successors, (5), 3 states have call predecessors, (5), 4 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-28 02:41:10,364 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2024-11-28 02:41:14,431 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2024-11-28 02:41:18,569 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.10s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2024-11-28 02:41:22,780 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.19s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2024-11-28 02:41:26,990 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.16s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2024-11-28 02:41:31,020 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2024-11-28 02:41:33,012 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.26s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2024-11-28 02:41:33,044 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:41:33,044 INFO L93 Difference]: Finished difference Result 208 states and 228 transitions. [2024-11-28 02:41:33,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-28 02:41:33,045 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 4.375) internal successors, (35), 8 states have internal predecessors, (35), 2 states have call successors, (5), 3 states have call predecessors, (5), 4 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 30 [2024-11-28 02:41:33,045 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:41:33,046 INFO L225 Difference]: With dead ends: 208 [2024-11-28 02:41:33,046 INFO L226 Difference]: Without dead ends: 208 [2024-11-28 02:41:33,046 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 49 SyntacticMatches, 3 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 8.3s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-11-28 02:41:33,047 INFO L435 NwaCegarLoop]: 113 mSDtfsCounter, 43 mSDsluCounter, 429 mSDsCounter, 0 mSdLazyCounter, 399 mSolverCounterSat, 15 mSolverCounterUnsat, 6 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 27.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 542 SdHoareTripleChecker+Invalid, 420 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 399 IncrementalHoareTripleChecker+Invalid, 6 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 27.9s IncrementalHoareTripleChecker+Time [2024-11-28 02:41:33,047 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [43 Valid, 542 Invalid, 420 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 399 Invalid, 6 Unknown, 0 Unchecked, 27.9s Time] [2024-11-28 02:41:33,048 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 208 states. [2024-11-28 02:41:33,055 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 208 to 174. [2024-11-28 02:41:33,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 174 states, 123 states have (on average 1.4634146341463414) internal successors, (180), 164 states have internal predecessors, (180), 5 states have call successors, (5), 3 states have call predecessors, (5), 4 states have return successors, (6), 6 states have call predecessors, (6), 5 states have call successors, (6) [2024-11-28 02:41:33,057 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 174 states to 174 states and 191 transitions. [2024-11-28 02:41:33,058 INFO L78 Accepts]: Start accepts. Automaton has 174 states and 191 transitions. Word has length 30 [2024-11-28 02:41:33,059 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:41:33,059 INFO L471 AbstractCegarLoop]: Abstraction has 174 states and 191 transitions. [2024-11-28 02:41:33,060 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 4.375) internal successors, (35), 8 states have internal predecessors, (35), 2 states have call successors, (5), 3 states have call predecessors, (5), 4 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-28 02:41:33,060 INFO L276 IsEmpty]: Start isEmpty. Operand 174 states and 191 transitions. [2024-11-28 02:41:33,062 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2024-11-28 02:41:33,062 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:41:33,062 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:41:33,077 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59a5a86a-8c5e-4252-a362-5ace54fdf036/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2024-11-28 02:41:33,263 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59a5a86a-8c5e-4252-a362-5ace54fdf036/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:41:33,263 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 54 more)] === [2024-11-28 02:41:33,263 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:41:33,263 INFO L85 PathProgramCache]: Analyzing trace with hash -902102274, now seen corresponding path program 1 times [2024-11-28 02:41:33,264 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 02:41:33,264 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [333301563] [2024-11-28 02:41:33,264 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:41:33,264 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:41:33,264 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59a5a86a-8c5e-4252-a362-5ace54fdf036/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:41:33,266 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59a5a86a-8c5e-4252-a362-5ace54fdf036/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:41:33,267 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59a5a86a-8c5e-4252-a362-5ace54fdf036/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2024-11-28 02:41:33,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:41:33,417 INFO L256 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 23 conjuncts are in the unsatisfiable core [2024-11-28 02:41:33,419 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:41:33,430 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 02:41:33,926 WARN L873 $PredicateComparison]: unable to prove that (exists ((alloc_and_zero_~pi~0.base (_ BitVec 64))) (and (= (store |c_old(#length)| alloc_and_zero_~pi~0.base (select |c_#length| alloc_and_zero_~pi~0.base)) |c_#length|) (= (_ bv0 1) (select |c_old(#valid)| alloc_and_zero_~pi~0.base)))) is different from true [2024-11-28 02:41:34,027 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 02:41:34,028 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 02:41:34,052 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2024-11-28 02:41:34,052 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 02:41:34,111 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 7 not checked. [2024-11-28 02:41:34,111 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 02:41:38,594 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 02:41:38,594 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [333301563] [2024-11-28 02:41:38,594 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [333301563] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:41:38,594 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [361405226] [2024-11-28 02:41:38,594 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:41:38,594 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-28 02:41:38,595 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59a5a86a-8c5e-4252-a362-5ace54fdf036/bin/uautomizer-verify-aQ6SnzHsRB/cvc4 [2024-11-28 02:41:38,604 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59a5a86a-8c5e-4252-a362-5ace54fdf036/bin/uautomizer-verify-aQ6SnzHsRB/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-28 02:41:38,605 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59a5a86a-8c5e-4252-a362-5ace54fdf036/bin/uautomizer-verify-aQ6SnzHsRB/cvc4 --incremental --print-success --lang smt (19)] Waiting until timeout for monitored process [2024-11-28 02:41:38,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:41:38,932 INFO L256 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-11-28 02:41:38,935 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:41:38,945 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 02:41:38,955 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 02:41:39,408 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 02:41:39,409 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 02:41:39,436 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2024-11-28 02:41:39,436 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 02:41:39,443 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 7 not checked. [2024-11-28 02:41:39,443 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 02:41:39,848 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [361405226] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:41:39,848 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-28 02:41:39,849 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8] total 9 [2024-11-28 02:41:39,849 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1833529519] [2024-11-28 02:41:39,849 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-28 02:41:39,849 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-28 02:41:39,849 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 02:41:39,850 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-28 02:41:39,850 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=86, Unknown=2, NotChecked=18, Total=132 [2024-11-28 02:41:39,850 INFO L87 Difference]: Start difference. First operand 174 states and 191 transitions. Second operand has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 8 states have internal predecessors, (26), 2 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-28 02:41:42,100 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:41:42,100 INFO L93 Difference]: Finished difference Result 186 states and 207 transitions. [2024-11-28 02:41:42,101 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-28 02:41:42,101 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 8 states have internal predecessors, (26), 2 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) Word has length 30 [2024-11-28 02:41:42,101 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:41:42,102 INFO L225 Difference]: With dead ends: 186 [2024-11-28 02:41:42,102 INFO L226 Difference]: Without dead ends: 186 [2024-11-28 02:41:42,103 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 51 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 4.9s TimeCoverageRelationStatistics Valid=33, Invalid=125, Unknown=2, NotChecked=22, Total=182 [2024-11-28 02:41:42,103 INFO L435 NwaCegarLoop]: 124 mSDtfsCounter, 12 mSDsluCounter, 370 mSDsCounter, 0 mSdLazyCounter, 443 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 494 SdHoareTripleChecker+Invalid, 598 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 443 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 147 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2024-11-28 02:41:42,104 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 494 Invalid, 598 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 443 Invalid, 0 Unknown, 147 Unchecked, 2.0s Time] [2024-11-28 02:41:42,104 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 186 states. [2024-11-28 02:41:42,111 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 186 to 185. [2024-11-28 02:41:42,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 185 states, 131 states have (on average 1.4427480916030535) internal successors, (189), 173 states have internal predecessors, (189), 7 states have call successors, (7), 3 states have call predecessors, (7), 5 states have return successors, (10), 8 states have call predecessors, (10), 7 states have call successors, (10) [2024-11-28 02:41:42,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 185 states to 185 states and 206 transitions. [2024-11-28 02:41:42,116 INFO L78 Accepts]: Start accepts. Automaton has 185 states and 206 transitions. Word has length 30 [2024-11-28 02:41:42,116 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:41:42,116 INFO L471 AbstractCegarLoop]: Abstraction has 185 states and 206 transitions. [2024-11-28 02:41:42,116 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 8 states have internal predecessors, (26), 2 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-28 02:41:42,117 INFO L276 IsEmpty]: Start isEmpty. Operand 185 states and 206 transitions. [2024-11-28 02:41:42,118 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2024-11-28 02:41:42,118 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:41:42,118 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] [2024-11-28 02:41:42,130 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59a5a86a-8c5e-4252-a362-5ace54fdf036/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2024-11-28 02:41:42,322 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59a5a86a-8c5e-4252-a362-5ace54fdf036/bin/uautomizer-verify-aQ6SnzHsRB/cvc4 --incremental --print-success --lang smt (19)] Ended with exit code 0 [2024-11-28 02:41:42,519 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59a5a86a-8c5e-4252-a362-5ace54fdf036/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59a5a86a-8c5e-4252-a362-5ace54fdf036/bin/uautomizer-verify-aQ6SnzHsRB/cvc4 --incremental --print-success --lang smt [2024-11-28 02:41:42,519 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 54 more)] === [2024-11-28 02:41:42,519 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:41:42,520 INFO L85 PathProgramCache]: Analyzing trace with hash 609985055, now seen corresponding path program 1 times [2024-11-28 02:41:42,520 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 02:41:42,520 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2007846048] [2024-11-28 02:41:42,520 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:41:42,520 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:41:42,520 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59a5a86a-8c5e-4252-a362-5ace54fdf036/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:41:42,527 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59a5a86a-8c5e-4252-a362-5ace54fdf036/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:41:42,528 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59a5a86a-8c5e-4252-a362-5ace54fdf036/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2024-11-28 02:41:42,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:41:42,676 INFO L256 TraceCheckSpWp]: Trace formula consists of 122 conjuncts, 31 conjuncts are in the unsatisfiable core [2024-11-28 02:41:42,679 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:41:42,749 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-28 02:41:42,823 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 18 [2024-11-28 02:41:43,763 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 10 [2024-11-28 02:41:43,899 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 02:41:43,900 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 02:41:43,900 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 02:41:43,900 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2007846048] [2024-11-28 02:41:43,900 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2007846048] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:41:43,900 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:41:43,900 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2024-11-28 02:41:43,900 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1841212242] [2024-11-28 02:41:43,900 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:41:43,901 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-28 02:41:43,901 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 02:41:43,901 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-28 02:41:43,902 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=177, Unknown=0, NotChecked=0, Total=210 [2024-11-28 02:41:43,902 INFO L87 Difference]: Start difference. First operand 185 states and 206 transitions. Second operand has 15 states, 14 states have (on average 1.8571428571428572) internal successors, (26), 14 states have internal predecessors, (26), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-28 02:41:47,143 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:41:47,143 INFO L93 Difference]: Finished difference Result 192 states and 213 transitions. [2024-11-28 02:41:47,144 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-28 02:41:47,144 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 1.8571428571428572) internal successors, (26), 14 states have internal predecessors, (26), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 30 [2024-11-28 02:41:47,144 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:41:47,145 INFO L225 Difference]: With dead ends: 192 [2024-11-28 02:41:47,145 INFO L226 Difference]: Without dead ends: 192 [2024-11-28 02:41:47,146 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=49, Invalid=257, Unknown=0, NotChecked=0, Total=306 [2024-11-28 02:41:47,146 INFO L435 NwaCegarLoop]: 111 mSDtfsCounter, 34 mSDsluCounter, 754 mSDsCounter, 0 mSdLazyCounter, 705 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 865 SdHoareTripleChecker+Invalid, 710 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 705 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2024-11-28 02:41:47,146 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [34 Valid, 865 Invalid, 710 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 705 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2024-11-28 02:41:47,147 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 192 states. [2024-11-28 02:41:47,153 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 192 to 189. [2024-11-28 02:41:47,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 189 states, 135 states have (on average 1.4444444444444444) internal successors, (195), 177 states have internal predecessors, (195), 7 states have call successors, (7), 3 states have call predecessors, (7), 5 states have return successors, (10), 8 states have call predecessors, (10), 7 states have call successors, (10) [2024-11-28 02:41:47,155 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 189 states to 189 states and 212 transitions. [2024-11-28 02:41:47,155 INFO L78 Accepts]: Start accepts. Automaton has 189 states and 212 transitions. Word has length 30 [2024-11-28 02:41:47,155 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:41:47,156 INFO L471 AbstractCegarLoop]: Abstraction has 189 states and 212 transitions. [2024-11-28 02:41:47,156 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 1.8571428571428572) internal successors, (26), 14 states have internal predecessors, (26), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-28 02:41:47,156 INFO L276 IsEmpty]: Start isEmpty. Operand 189 states and 212 transitions. [2024-11-28 02:41:47,157 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2024-11-28 02:41:47,157 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:41:47,157 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] [2024-11-28 02:41:47,169 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59a5a86a-8c5e-4252-a362-5ace54fdf036/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2024-11-28 02:41:47,361 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59a5a86a-8c5e-4252-a362-5ace54fdf036/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:41:47,361 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 54 more)] === [2024-11-28 02:41:47,361 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:41:47,361 INFO L85 PathProgramCache]: Analyzing trace with hash 609985056, now seen corresponding path program 1 times [2024-11-28 02:41:47,362 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 02:41:47,362 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [557606278] [2024-11-28 02:41:47,362 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:41:47,362 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:41:47,362 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59a5a86a-8c5e-4252-a362-5ace54fdf036/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:41:47,364 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59a5a86a-8c5e-4252-a362-5ace54fdf036/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:41:47,365 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59a5a86a-8c5e-4252-a362-5ace54fdf036/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2024-11-28 02:41:47,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:41:47,506 INFO L256 TraceCheckSpWp]: Trace formula consists of 122 conjuncts, 42 conjuncts are in the unsatisfiable core [2024-11-28 02:41:47,510 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:41:47,519 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 02:41:47,565 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-28 02:41:47,578 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-28 02:41:47,640 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2024-11-28 02:41:47,655 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 18 [2024-11-28 02:41:48,761 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2024-11-28 02:41:48,771 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-28 02:41:48,771 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 22 treesize of output 10 [2024-11-28 02:41:48,784 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2024-11-28 02:41:48,979 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 02:41:48,979 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 02:41:48,979 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 02:41:48,979 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [557606278] [2024-11-28 02:41:48,979 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [557606278] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:41:48,979 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:41:48,979 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2024-11-28 02:41:48,979 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1716643970] [2024-11-28 02:41:48,979 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:41:48,980 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-28 02:41:48,980 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 02:41:48,981 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-28 02:41:48,982 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2024-11-28 02:41:48,982 INFO L87 Difference]: Start difference. First operand 189 states and 212 transitions. Second operand has 14 states, 14 states have (on average 1.8571428571428572) internal successors, (26), 13 states have internal predecessors, (26), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-28 02:41:52,484 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:41:52,484 INFO L93 Difference]: Finished difference Result 182 states and 200 transitions. [2024-11-28 02:41:52,485 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-28 02:41:52,485 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 1.8571428571428572) internal successors, (26), 13 states have internal predecessors, (26), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 30 [2024-11-28 02:41:52,485 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:41:52,486 INFO L225 Difference]: With dead ends: 182 [2024-11-28 02:41:52,487 INFO L226 Difference]: Without dead ends: 182 [2024-11-28 02:41:52,487 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=44, Invalid=228, Unknown=0, NotChecked=0, Total=272 [2024-11-28 02:41:52,487 INFO L435 NwaCegarLoop]: 117 mSDtfsCounter, 9 mSDsluCounter, 856 mSDsCounter, 0 mSdLazyCounter, 607 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 973 SdHoareTripleChecker+Invalid, 611 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 607 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2024-11-28 02:41:52,488 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 973 Invalid, 611 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 607 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2024-11-28 02:41:52,488 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182 states. [2024-11-28 02:41:52,493 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182 to 181. [2024-11-28 02:41:52,494 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 181 states, 127 states have (on average 1.4330708661417322) internal successors, (182), 169 states have internal predecessors, (182), 7 states have call successors, (7), 3 states have call predecessors, (7), 5 states have return successors, (10), 8 states have call predecessors, (10), 7 states have call successors, (10) [2024-11-28 02:41:52,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 181 states to 181 states and 199 transitions. [2024-11-28 02:41:52,496 INFO L78 Accepts]: Start accepts. Automaton has 181 states and 199 transitions. Word has length 30 [2024-11-28 02:41:52,496 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:41:52,496 INFO L471 AbstractCegarLoop]: Abstraction has 181 states and 199 transitions. [2024-11-28 02:41:52,496 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 1.8571428571428572) internal successors, (26), 13 states have internal predecessors, (26), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-28 02:41:52,496 INFO L276 IsEmpty]: Start isEmpty. Operand 181 states and 199 transitions. [2024-11-28 02:41:52,497 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2024-11-28 02:41:52,497 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:41:52,497 INFO L218 NwaCegarLoop]: trace histogram [2, 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 02:41:52,513 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59a5a86a-8c5e-4252-a362-5ace54fdf036/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Ended with exit code 0 [2024-11-28 02:41:52,697 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59a5a86a-8c5e-4252-a362-5ace54fdf036/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:41:52,698 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 54 more)] === [2024-11-28 02:41:52,698 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:41:52,698 INFO L85 PathProgramCache]: Analyzing trace with hash 2128117275, now seen corresponding path program 1 times [2024-11-28 02:41:52,699 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 02:41:52,699 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1415392314] [2024-11-28 02:41:52,699 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:41:52,699 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:41:52,699 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59a5a86a-8c5e-4252-a362-5ace54fdf036/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:41:52,701 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59a5a86a-8c5e-4252-a362-5ace54fdf036/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:41:52,702 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59a5a86a-8c5e-4252-a362-5ace54fdf036/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2024-11-28 02:41:52,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:41:52,850 INFO L256 TraceCheckSpWp]: Trace formula consists of 132 conjuncts, 35 conjuncts are in the unsatisfiable core [2024-11-28 02:41:52,854 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:41:52,860 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-28 02:41:52,872 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-28 02:41:52,903 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2024-11-28 02:41:52,936 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2024-11-28 02:41:53,033 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-28 02:41:53,033 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 38 treesize of output 25 [2024-11-28 02:41:53,064 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 32 [2024-11-28 02:41:54,780 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:41:54,780 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 02:41:58,607 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:41:58,607 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 02:41:58,607 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1415392314] [2024-11-28 02:41:58,607 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1415392314] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 02:41:58,607 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-28 02:41:58,607 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 11] total 19 [2024-11-28 02:41:58,607 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [145640643] [2024-11-28 02:41:58,608 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-28 02:41:58,608 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-11-28 02:41:58,608 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 02:41:58,609 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-11-28 02:41:58,609 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=298, Unknown=0, NotChecked=0, Total=342 [2024-11-28 02:41:58,609 INFO L87 Difference]: Start difference. First operand 181 states and 199 transitions. Second operand has 19 states, 19 states have (on average 2.6315789473684212) internal successors, (50), 17 states have internal predecessors, (50), 3 states have call successors, (3), 3 states have call predecessors, (3), 4 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) [2024-11-28 02:42:02,330 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:42:02,330 INFO L93 Difference]: Finished difference Result 185 states and 203 transitions. [2024-11-28 02:42:02,331 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-28 02:42:02,332 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.6315789473684212) internal successors, (50), 17 states have internal predecessors, (50), 3 states have call successors, (3), 3 states have call predecessors, (3), 4 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) Word has length 33 [2024-11-28 02:42:02,332 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:42:02,333 INFO L225 Difference]: With dead ends: 185 [2024-11-28 02:42:02,333 INFO L226 Difference]: Without dead ends: 185 [2024-11-28 02:42:02,333 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=48, Invalid=332, Unknown=0, NotChecked=0, Total=380 [2024-11-28 02:42:02,334 INFO L435 NwaCegarLoop]: 117 mSDtfsCounter, 5 mSDsluCounter, 1140 mSDsCounter, 0 mSdLazyCounter, 434 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 1257 SdHoareTripleChecker+Invalid, 439 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 434 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2024-11-28 02:42:02,334 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 1257 Invalid, 439 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 434 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time] [2024-11-28 02:42:02,335 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 185 states. [2024-11-28 02:42:02,340 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 185 to 183. [2024-11-28 02:42:02,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 183 states, 129 states have (on average 1.426356589147287) internal successors, (184), 171 states have internal predecessors, (184), 7 states have call successors, (7), 3 states have call predecessors, (7), 5 states have return successors, (10), 8 states have call predecessors, (10), 7 states have call successors, (10) [2024-11-28 02:42:02,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 183 states to 183 states and 201 transitions. [2024-11-28 02:42:02,342 INFO L78 Accepts]: Start accepts. Automaton has 183 states and 201 transitions. Word has length 33 [2024-11-28 02:42:02,342 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:42:02,342 INFO L471 AbstractCegarLoop]: Abstraction has 183 states and 201 transitions. [2024-11-28 02:42:02,343 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 2.6315789473684212) internal successors, (50), 17 states have internal predecessors, (50), 3 states have call successors, (3), 3 states have call predecessors, (3), 4 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) [2024-11-28 02:42:02,343 INFO L276 IsEmpty]: Start isEmpty. Operand 183 states and 201 transitions. [2024-11-28 02:42:02,343 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2024-11-28 02:42:02,343 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:42:02,344 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] [2024-11-28 02:42:02,358 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59a5a86a-8c5e-4252-a362-5ace54fdf036/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Ended with exit code 0 [2024-11-28 02:42:02,544 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59a5a86a-8c5e-4252-a362-5ace54fdf036/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:42:02,545 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr12REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 54 more)] === [2024-11-28 02:42:02,545 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:42:02,545 INFO L85 PathProgramCache]: Analyzing trace with hash 1547217647, now seen corresponding path program 1 times [2024-11-28 02:42:02,545 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 02:42:02,545 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [635643465] [2024-11-28 02:42:02,545 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:42:02,546 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:42:02,546 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59a5a86a-8c5e-4252-a362-5ace54fdf036/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:42:02,548 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59a5a86a-8c5e-4252-a362-5ace54fdf036/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:42:02,549 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59a5a86a-8c5e-4252-a362-5ace54fdf036/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2024-11-28 02:42:02,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:42:02,720 INFO L256 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-11-28 02:42:02,722 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:42:03,072 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-28 02:42:03,072 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 02:42:03,072 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 02:42:03,072 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [635643465] [2024-11-28 02:42:03,072 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [635643465] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:42:03,072 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:42:03,072 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-28 02:42:03,072 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1461862403] [2024-11-28 02:42:03,072 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:42:03,073 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-28 02:42:03,073 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 02:42:03,073 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-28 02:42:03,073 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2024-11-28 02:42:03,074 INFO L87 Difference]: Start difference. First operand 183 states and 201 transitions. Second operand has 10 states, 9 states have (on average 3.3333333333333335) internal successors, (30), 9 states have internal predecessors, (30), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-28 02:42:05,167 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:42:05,167 INFO L93 Difference]: Finished difference Result 221 states and 243 transitions. [2024-11-28 02:42:05,167 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-28 02:42:05,167 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.3333333333333335) internal successors, (30), 9 states have internal predecessors, (30), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 34 [2024-11-28 02:42:05,168 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:42:05,168 INFO L225 Difference]: With dead ends: 221 [2024-11-28 02:42:05,168 INFO L226 Difference]: Without dead ends: 221 [2024-11-28 02:42:05,169 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2024-11-28 02:42:05,169 INFO L435 NwaCegarLoop]: 93 mSDtfsCounter, 45 mSDsluCounter, 510 mSDsCounter, 0 mSdLazyCounter, 561 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 603 SdHoareTripleChecker+Invalid, 568 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 561 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2024-11-28 02:42:05,169 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [45 Valid, 603 Invalid, 568 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 561 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2024-11-28 02:42:05,170 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 221 states. [2024-11-28 02:42:05,175 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 221 to 191. [2024-11-28 02:42:05,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 191 states, 137 states have (on average 1.437956204379562) internal successors, (197), 179 states have internal predecessors, (197), 7 states have call successors, (7), 3 states have call predecessors, (7), 5 states have return successors, (10), 8 states have call predecessors, (10), 7 states have call successors, (10) [2024-11-28 02:42:05,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 191 states to 191 states and 214 transitions. [2024-11-28 02:42:05,177 INFO L78 Accepts]: Start accepts. Automaton has 191 states and 214 transitions. Word has length 34 [2024-11-28 02:42:05,178 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:42:05,178 INFO L471 AbstractCegarLoop]: Abstraction has 191 states and 214 transitions. [2024-11-28 02:42:05,178 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 3.3333333333333335) internal successors, (30), 9 states have internal predecessors, (30), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-28 02:42:05,178 INFO L276 IsEmpty]: Start isEmpty. Operand 191 states and 214 transitions. [2024-11-28 02:42:05,179 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2024-11-28 02:42:05,179 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:42:05,179 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] [2024-11-28 02:42:05,194 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59a5a86a-8c5e-4252-a362-5ace54fdf036/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Ended with exit code 0 [2024-11-28 02:42:05,380 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59a5a86a-8c5e-4252-a362-5ace54fdf036/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:42:05,382 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 54 more)] === [2024-11-28 02:42:05,382 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:42:05,382 INFO L85 PathProgramCache]: Analyzing trace with hash 1547217648, now seen corresponding path program 1 times [2024-11-28 02:42:05,382 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 02:42:05,383 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1422178359] [2024-11-28 02:42:05,383 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:42:05,383 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:42:05,383 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59a5a86a-8c5e-4252-a362-5ace54fdf036/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:42:05,387 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59a5a86a-8c5e-4252-a362-5ace54fdf036/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:42:05,389 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59a5a86a-8c5e-4252-a362-5ace54fdf036/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2024-11-28 02:42:05,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:42:05,563 INFO L256 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 20 conjuncts are in the unsatisfiable core [2024-11-28 02:42:05,565 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:42:05,575 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 02:42:06,200 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-28 02:42:06,200 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 02:42:06,200 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 02:42:06,200 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1422178359] [2024-11-28 02:42:06,201 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1422178359] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:42:06,201 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:42:06,201 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-28 02:42:06,201 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1926407527] [2024-11-28 02:42:06,201 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:42:06,201 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-28 02:42:06,201 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 02:42:06,202 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-28 02:42:06,202 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2024-11-28 02:42:06,202 INFO L87 Difference]: Start difference. First operand 191 states and 214 transitions. Second operand has 10 states, 9 states have (on average 3.3333333333333335) internal successors, (30), 9 states have internal predecessors, (30), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-28 02:42:08,873 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:42:08,873 INFO L93 Difference]: Finished difference Result 239 states and 263 transitions. [2024-11-28 02:42:08,875 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-28 02:42:08,876 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.3333333333333335) internal successors, (30), 9 states have internal predecessors, (30), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 34 [2024-11-28 02:42:08,876 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:42:08,877 INFO L225 Difference]: With dead ends: 239 [2024-11-28 02:42:08,878 INFO L226 Difference]: Without dead ends: 239 [2024-11-28 02:42:08,878 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2024-11-28 02:42:08,880 INFO L435 NwaCegarLoop]: 96 mSDtfsCounter, 47 mSDsluCounter, 552 mSDsCounter, 0 mSdLazyCounter, 526 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 648 SdHoareTripleChecker+Invalid, 531 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 526 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2024-11-28 02:42:08,881 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [47 Valid, 648 Invalid, 531 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 526 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2024-11-28 02:42:08,882 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 239 states. [2024-11-28 02:42:08,887 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 239 to 217. [2024-11-28 02:42:08,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 217 states, 163 states have (on average 1.5030674846625767) internal successors, (245), 205 states have internal predecessors, (245), 7 states have call successors, (7), 3 states have call predecessors, (7), 5 states have return successors, (10), 8 states have call predecessors, (10), 7 states have call successors, (10) [2024-11-28 02:42:08,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 217 states to 217 states and 262 transitions. [2024-11-28 02:42:08,889 INFO L78 Accepts]: Start accepts. Automaton has 217 states and 262 transitions. Word has length 34 [2024-11-28 02:42:08,889 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:42:08,889 INFO L471 AbstractCegarLoop]: Abstraction has 217 states and 262 transitions. [2024-11-28 02:42:08,889 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 3.3333333333333335) internal successors, (30), 9 states have internal predecessors, (30), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-28 02:42:08,889 INFO L276 IsEmpty]: Start isEmpty. Operand 217 states and 262 transitions. [2024-11-28 02:42:08,890 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2024-11-28 02:42:08,890 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:42:08,890 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] [2024-11-28 02:42:08,907 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59a5a86a-8c5e-4252-a362-5ace54fdf036/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2024-11-28 02:42:09,091 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59a5a86a-8c5e-4252-a362-5ace54fdf036/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:42:09,091 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr38ASSERT_VIOLATIONMEMORY_LEAK === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 54 more)] === [2024-11-28 02:42:09,091 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:42:09,091 INFO L85 PathProgramCache]: Analyzing trace with hash 719110981, now seen corresponding path program 1 times [2024-11-28 02:42:09,092 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 02:42:09,092 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1367421714] [2024-11-28 02:42:09,092 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:42:09,092 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:42:09,092 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59a5a86a-8c5e-4252-a362-5ace54fdf036/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:42:09,094 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59a5a86a-8c5e-4252-a362-5ace54fdf036/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:42:09,097 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59a5a86a-8c5e-4252-a362-5ace54fdf036/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2024-11-28 02:42:09,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:42:09,273 INFO L256 TraceCheckSpWp]: Trace formula consists of 136 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-28 02:42:09,275 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:42:09,539 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-28 02:42:09,540 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 02:42:09,540 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 02:42:09,540 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1367421714] [2024-11-28 02:42:09,540 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1367421714] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:42:09,540 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:42:09,540 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-28 02:42:09,540 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [362326320] [2024-11-28 02:42:09,540 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:42:09,541 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-28 02:42:09,541 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 02:42:09,541 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-28 02:42:09,541 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2024-11-28 02:42:09,541 INFO L87 Difference]: Start difference. First operand 217 states and 262 transitions. Second operand has 9 states, 9 states have (on average 3.4444444444444446) internal successors, (31), 8 states have internal predecessors, (31), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-28 02:42:09,984 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:42:09,984 INFO L93 Difference]: Finished difference Result 271 states and 323 transitions. [2024-11-28 02:42:09,985 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-28 02:42:09,985 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 3.4444444444444446) internal successors, (31), 8 states have internal predecessors, (31), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 35 [2024-11-28 02:42:09,985 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:42:09,988 INFO L225 Difference]: With dead ends: 271 [2024-11-28 02:42:09,988 INFO L226 Difference]: Without dead ends: 271 [2024-11-28 02:42:09,989 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2024-11-28 02:42:09,990 INFO L435 NwaCegarLoop]: 118 mSDtfsCounter, 71 mSDsluCounter, 777 mSDsCounter, 0 mSdLazyCounter, 136 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 73 SdHoareTripleChecker+Valid, 895 SdHoareTripleChecker+Invalid, 136 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 136 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-28 02:42:09,991 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [73 Valid, 895 Invalid, 136 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 136 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-28 02:42:09,992 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 271 states. [2024-11-28 02:42:10,003 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 271 to 218. [2024-11-28 02:42:10,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 218 states, 164 states have (on average 1.4939024390243902) internal successors, (245), 206 states have internal predecessors, (245), 7 states have call successors, (7), 3 states have call predecessors, (7), 5 states have return successors, (10), 8 states have call predecessors, (10), 7 states have call successors, (10) [2024-11-28 02:42:10,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 218 states to 218 states and 262 transitions. [2024-11-28 02:42:10,007 INFO L78 Accepts]: Start accepts. Automaton has 218 states and 262 transitions. Word has length 35 [2024-11-28 02:42:10,007 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:42:10,007 INFO L471 AbstractCegarLoop]: Abstraction has 218 states and 262 transitions. [2024-11-28 02:42:10,007 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 3.4444444444444446) internal successors, (31), 8 states have internal predecessors, (31), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-28 02:42:10,008 INFO L276 IsEmpty]: Start isEmpty. Operand 218 states and 262 transitions. [2024-11-28 02:42:10,008 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2024-11-28 02:42:10,008 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:42:10,008 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:42:10,022 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59a5a86a-8c5e-4252-a362-5ace54fdf036/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Ended with exit code 0 [2024-11-28 02:42:10,209 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59a5a86a-8c5e-4252-a362-5ace54fdf036/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:42:10,210 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr14REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 54 more)] === [2024-11-28 02:42:10,210 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:42:10,210 INFO L85 PathProgramCache]: Analyzing trace with hash 817477040, now seen corresponding path program 1 times [2024-11-28 02:42:10,211 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 02:42:10,211 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1227196850] [2024-11-28 02:42:10,211 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:42:10,212 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:42:10,212 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59a5a86a-8c5e-4252-a362-5ace54fdf036/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:42:10,214 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59a5a86a-8c5e-4252-a362-5ace54fdf036/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:42:10,217 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59a5a86a-8c5e-4252-a362-5ace54fdf036/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2024-11-28 02:42:10,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:42:10,393 INFO L256 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-11-28 02:42:10,395 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:42:10,854 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-28 02:42:10,854 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 02:42:10,855 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 02:42:10,855 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1227196850] [2024-11-28 02:42:10,855 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1227196850] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:42:10,855 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:42:10,855 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-28 02:42:10,855 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [452643712] [2024-11-28 02:42:10,855 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:42:10,855 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-28 02:42:10,855 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 02:42:10,856 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-28 02:42:10,856 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2024-11-28 02:42:10,856 INFO L87 Difference]: Start difference. First operand 218 states and 262 transitions. Second operand has 11 states, 10 states have (on average 3.2) internal successors, (32), 10 states have internal predecessors, (32), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-28 02:42:13,202 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:42:13,202 INFO L93 Difference]: Finished difference Result 260 states and 317 transitions. [2024-11-28 02:42:13,202 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-28 02:42:13,203 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 3.2) internal successors, (32), 10 states have internal predecessors, (32), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 36 [2024-11-28 02:42:13,203 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:42:13,204 INFO L225 Difference]: With dead ends: 260 [2024-11-28 02:42:13,204 INFO L226 Difference]: Without dead ends: 260 [2024-11-28 02:42:13,204 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2024-11-28 02:42:13,205 INFO L435 NwaCegarLoop]: 92 mSDtfsCounter, 77 mSDsluCounter, 563 mSDsCounter, 0 mSdLazyCounter, 625 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 77 SdHoareTripleChecker+Valid, 655 SdHoareTripleChecker+Invalid, 631 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 625 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2024-11-28 02:42:13,205 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [77 Valid, 655 Invalid, 631 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 625 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2024-11-28 02:42:13,206 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 260 states. [2024-11-28 02:42:13,211 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 260 to 217. [2024-11-28 02:42:13,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 217 states, 164 states have (on average 1.4817073170731707) internal successors, (243), 205 states have internal predecessors, (243), 7 states have call successors, (7), 3 states have call predecessors, (7), 5 states have return successors, (10), 8 states have call predecessors, (10), 7 states have call successors, (10) [2024-11-28 02:42:13,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 217 states to 217 states and 260 transitions. [2024-11-28 02:42:13,214 INFO L78 Accepts]: Start accepts. Automaton has 217 states and 260 transitions. Word has length 36 [2024-11-28 02:42:13,214 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:42:13,214 INFO L471 AbstractCegarLoop]: Abstraction has 217 states and 260 transitions. [2024-11-28 02:42:13,214 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 3.2) internal successors, (32), 10 states have internal predecessors, (32), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-28 02:42:13,215 INFO L276 IsEmpty]: Start isEmpty. Operand 217 states and 260 transitions. [2024-11-28 02:42:13,215 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2024-11-28 02:42:13,215 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:42:13,215 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:42:13,230 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59a5a86a-8c5e-4252-a362-5ace54fdf036/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Forceful destruction successful, exit code 0 [2024-11-28 02:42:13,416 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59a5a86a-8c5e-4252-a362-5ace54fdf036/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:42:13,416 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr15REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 54 more)] === [2024-11-28 02:42:13,417 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:42:13,417 INFO L85 PathProgramCache]: Analyzing trace with hash 817477041, now seen corresponding path program 1 times [2024-11-28 02:42:13,417 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 02:42:13,417 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1230429023] [2024-11-28 02:42:13,417 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:42:13,417 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:42:13,418 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59a5a86a-8c5e-4252-a362-5ace54fdf036/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:42:13,420 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59a5a86a-8c5e-4252-a362-5ace54fdf036/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:42:13,421 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59a5a86a-8c5e-4252-a362-5ace54fdf036/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2024-11-28 02:42:13,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:42:13,583 INFO L256 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-11-28 02:42:13,585 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:42:13,592 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2024-11-28 02:42:14,241 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-28 02:42:14,241 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 02:42:14,241 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 02:42:14,241 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1230429023] [2024-11-28 02:42:14,241 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1230429023] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:42:14,241 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:42:14,241 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-28 02:42:14,241 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1516899415] [2024-11-28 02:42:14,242 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:42:14,242 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-28 02:42:14,242 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 02:42:14,243 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-28 02:42:14,243 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2024-11-28 02:42:14,243 INFO L87 Difference]: Start difference. First operand 217 states and 260 transitions. Second operand has 11 states, 10 states have (on average 3.2) internal successors, (32), 10 states have internal predecessors, (32), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-28 02:42:17,138 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:42:17,138 INFO L93 Difference]: Finished difference Result 237 states and 260 transitions. [2024-11-28 02:42:17,140 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-28 02:42:17,140 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 3.2) internal successors, (32), 10 states have internal predecessors, (32), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 36 [2024-11-28 02:42:17,140 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:42:17,142 INFO L225 Difference]: With dead ends: 237 [2024-11-28 02:42:17,142 INFO L226 Difference]: Without dead ends: 237 [2024-11-28 02:42:17,142 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2024-11-28 02:42:17,143 INFO L435 NwaCegarLoop]: 95 mSDtfsCounter, 83 mSDsluCounter, 605 mSDsCounter, 0 mSdLazyCounter, 596 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 83 SdHoareTripleChecker+Valid, 700 SdHoareTripleChecker+Invalid, 600 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 596 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2024-11-28 02:42:17,143 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [83 Valid, 700 Invalid, 600 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 596 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2024-11-28 02:42:17,144 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 237 states. [2024-11-28 02:42:17,150 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 237 to 217. [2024-11-28 02:42:17,152 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 217 states, 164 states have (on average 1.475609756097561) internal successors, (242), 205 states have internal predecessors, (242), 7 states have call successors, (7), 3 states have call predecessors, (7), 5 states have return successors, (10), 8 states have call predecessors, (10), 7 states have call successors, (10) [2024-11-28 02:42:17,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 217 states to 217 states and 259 transitions. [2024-11-28 02:42:17,153 INFO L78 Accepts]: Start accepts. Automaton has 217 states and 259 transitions. Word has length 36 [2024-11-28 02:42:17,154 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:42:17,154 INFO L471 AbstractCegarLoop]: Abstraction has 217 states and 259 transitions. [2024-11-28 02:42:17,154 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 3.2) internal successors, (32), 10 states have internal predecessors, (32), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-28 02:42:17,154 INFO L276 IsEmpty]: Start isEmpty. Operand 217 states and 259 transitions. [2024-11-28 02:42:17,155 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2024-11-28 02:42:17,155 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:42:17,155 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 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 02:42:17,171 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59a5a86a-8c5e-4252-a362-5ace54fdf036/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Ended with exit code 0 [2024-11-28 02:42:17,356 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59a5a86a-8c5e-4252-a362-5ace54fdf036/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:42:17,356 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting create_internalErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 54 more)] === [2024-11-28 02:42:17,357 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:42:17,357 INFO L85 PathProgramCache]: Analyzing trace with hash -1994486123, now seen corresponding path program 1 times [2024-11-28 02:42:17,357 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 02:42:17,357 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [247131603] [2024-11-28 02:42:17,357 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:42:17,357 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:42:17,357 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59a5a86a-8c5e-4252-a362-5ace54fdf036/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:42:17,359 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59a5a86a-8c5e-4252-a362-5ace54fdf036/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:42:17,361 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59a5a86a-8c5e-4252-a362-5ace54fdf036/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2024-11-28 02:42:17,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:42:17,569 INFO L256 TraceCheckSpWp]: Trace formula consists of 233 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-11-28 02:42:17,571 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:42:17,666 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-28 02:42:17,711 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-28 02:42:17,893 INFO L349 Elim1Store]: treesize reduction 24, result has 33.3 percent of original size [2024-11-28 02:42:17,894 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 21 treesize of output 20 [2024-11-28 02:42:17,951 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-28 02:42:17,951 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 02:42:17,951 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 02:42:17,951 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [247131603] [2024-11-28 02:42:17,951 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [247131603] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:42:17,951 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:42:17,951 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-28 02:42:17,952 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1058054920] [2024-11-28 02:42:17,952 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:42:17,952 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-28 02:42:17,952 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 02:42:17,952 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-28 02:42:17,953 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2024-11-28 02:42:17,953 INFO L87 Difference]: Start difference. First operand 217 states and 259 transitions. Second operand has 10 states, 8 states have (on average 4.0) internal successors, (32), 8 states have internal predecessors, (32), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2024-11-28 02:42:20,267 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:42:20,267 INFO L93 Difference]: Finished difference Result 218 states and 258 transitions. [2024-11-28 02:42:20,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-28 02:42:20,268 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 8 states have (on average 4.0) internal successors, (32), 8 states have internal predecessors, (32), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 40 [2024-11-28 02:42:20,268 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:42:20,269 INFO L225 Difference]: With dead ends: 218 [2024-11-28 02:42:20,269 INFO L226 Difference]: Without dead ends: 218 [2024-11-28 02:42:20,270 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2024-11-28 02:42:20,270 INFO L435 NwaCegarLoop]: 126 mSDtfsCounter, 37 mSDsluCounter, 612 mSDsCounter, 0 mSdLazyCounter, 535 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 738 SdHoareTripleChecker+Invalid, 539 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 535 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2024-11-28 02:42:20,270 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [37 Valid, 738 Invalid, 539 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 535 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2024-11-28 02:42:20,271 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 218 states. [2024-11-28 02:42:20,276 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 218 to 216. [2024-11-28 02:42:20,277 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 216 states, 164 states have (on average 1.4695121951219512) internal successors, (241), 204 states have internal predecessors, (241), 7 states have call successors, (7), 3 states have call predecessors, (7), 5 states have return successors, (10), 8 states have call predecessors, (10), 7 states have call successors, (10) [2024-11-28 02:42:20,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 216 states to 216 states and 258 transitions. [2024-11-28 02:42:20,278 INFO L78 Accepts]: Start accepts. Automaton has 216 states and 258 transitions. Word has length 40 [2024-11-28 02:42:20,278 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:42:20,279 INFO L471 AbstractCegarLoop]: Abstraction has 216 states and 258 transitions. [2024-11-28 02:42:20,279 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 8 states have (on average 4.0) internal successors, (32), 8 states have internal predecessors, (32), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2024-11-28 02:42:20,279 INFO L276 IsEmpty]: Start isEmpty. Operand 216 states and 258 transitions. [2024-11-28 02:42:20,280 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2024-11-28 02:42:20,280 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:42:20,280 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 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 02:42:20,295 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59a5a86a-8c5e-4252-a362-5ace54fdf036/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Ended with exit code 0 [2024-11-28 02:42:20,480 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59a5a86a-8c5e-4252-a362-5ace54fdf036/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:42:20,481 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting create_internalErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 54 more)] === [2024-11-28 02:42:20,481 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:42:20,481 INFO L85 PathProgramCache]: Analyzing trace with hash -1994486122, now seen corresponding path program 1 times [2024-11-28 02:42:20,481 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 02:42:20,481 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1430793554] [2024-11-28 02:42:20,481 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:42:20,481 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:42:20,482 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59a5a86a-8c5e-4252-a362-5ace54fdf036/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:42:20,483 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59a5a86a-8c5e-4252-a362-5ace54fdf036/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:42:20,484 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59a5a86a-8c5e-4252-a362-5ace54fdf036/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2024-11-28 02:42:20,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:42:20,670 INFO L256 TraceCheckSpWp]: Trace formula consists of 233 conjuncts, 30 conjuncts are in the unsatisfiable core [2024-11-28 02:42:20,673 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:42:20,681 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 02:42:20,951 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-28 02:42:20,971 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-28 02:42:21,046 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 28 treesize of output 16 [2024-11-28 02:42:21,331 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-28 02:42:21,332 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 02:42:21,354 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2024-11-28 02:42:21,354 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 02:42:21,495 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-28 02:42:21,495 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 02:42:21,495 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 02:42:21,495 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1430793554] [2024-11-28 02:42:21,495 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1430793554] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:42:21,496 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:42:21,496 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-11-28 02:42:21,496 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [496357310] [2024-11-28 02:42:21,496 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:42:21,496 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-28 02:42:21,496 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 02:42:21,497 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-28 02:42:21,497 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2024-11-28 02:42:21,498 INFO L87 Difference]: Start difference. First operand 216 states and 258 transitions. Second operand has 12 states, 10 states have (on average 3.3) internal successors, (33), 10 states have internal predecessors, (33), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2024-11-28 02:42:24,938 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:42:24,938 INFO L93 Difference]: Finished difference Result 217 states and 257 transitions. [2024-11-28 02:42:24,938 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-28 02:42:24,939 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 10 states have (on average 3.3) internal successors, (33), 10 states have internal predecessors, (33), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 40 [2024-11-28 02:42:24,939 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:42:24,940 INFO L225 Difference]: With dead ends: 217 [2024-11-28 02:42:24,940 INFO L226 Difference]: Without dead ends: 217 [2024-11-28 02:42:24,940 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=39, Invalid=171, Unknown=0, NotChecked=0, Total=210 [2024-11-28 02:42:24,940 INFO L435 NwaCegarLoop]: 124 mSDtfsCounter, 37 mSDsluCounter, 598 mSDsCounter, 0 mSdLazyCounter, 673 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 722 SdHoareTripleChecker+Invalid, 677 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 673 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2024-11-28 02:42:24,941 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [37 Valid, 722 Invalid, 677 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 673 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time] [2024-11-28 02:42:24,941 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 217 states. [2024-11-28 02:42:24,946 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 217 to 215. [2024-11-28 02:42:24,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 215 states, 164 states have (on average 1.4634146341463414) internal successors, (240), 203 states have internal predecessors, (240), 7 states have call successors, (7), 3 states have call predecessors, (7), 5 states have return successors, (10), 8 states have call predecessors, (10), 7 states have call successors, (10) [2024-11-28 02:42:24,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 215 states to 215 states and 257 transitions. [2024-11-28 02:42:24,948 INFO L78 Accepts]: Start accepts. Automaton has 215 states and 257 transitions. Word has length 40 [2024-11-28 02:42:24,948 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:42:24,948 INFO L471 AbstractCegarLoop]: Abstraction has 215 states and 257 transitions. [2024-11-28 02:42:24,949 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 10 states have (on average 3.3) internal successors, (33), 10 states have internal predecessors, (33), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2024-11-28 02:42:24,949 INFO L276 IsEmpty]: Start isEmpty. Operand 215 states and 257 transitions. [2024-11-28 02:42:24,949 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2024-11-28 02:42:24,949 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:42:24,950 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] [2024-11-28 02:42:24,965 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59a5a86a-8c5e-4252-a362-5ace54fdf036/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Forceful destruction successful, exit code 0 [2024-11-28 02:42:25,150 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59a5a86a-8c5e-4252-a362-5ace54fdf036/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:42:25,150 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr16REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 54 more)] === [2024-11-28 02:42:25,151 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:42:25,151 INFO L85 PathProgramCache]: Analyzing trace with hash -383576911, now seen corresponding path program 1 times [2024-11-28 02:42:25,151 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 02:42:25,151 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [546833281] [2024-11-28 02:42:25,151 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:42:25,151 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:42:25,151 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59a5a86a-8c5e-4252-a362-5ace54fdf036/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:42:25,153 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59a5a86a-8c5e-4252-a362-5ace54fdf036/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:42:25,154 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59a5a86a-8c5e-4252-a362-5ace54fdf036/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2024-11-28 02:42:25,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:42:25,311 INFO L256 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 39 conjuncts are in the unsatisfiable core [2024-11-28 02:42:25,315 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:42:25,373 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 8 treesize of output 1 [2024-11-28 02:42:26,521 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 15 treesize of output 7 [2024-11-28 02:42:26,685 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 02:42:26,685 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 02:42:29,450 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 12 [2024-11-28 02:42:29,594 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:42:29,594 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 02:42:29,594 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [546833281] [2024-11-28 02:42:29,594 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [546833281] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-28 02:42:29,594 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 02:42:29,594 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [17] total 31 [2024-11-28 02:42:29,594 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [385475008] [2024-11-28 02:42:29,594 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:42:29,595 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-28 02:42:29,595 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-28 02:42:29,595 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-28 02:42:29,596 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=907, Unknown=0, NotChecked=0, Total=992 [2024-11-28 02:42:29,596 INFO L87 Difference]: Start difference. First operand 215 states and 257 transitions. Second operand has 18 states, 17 states have (on average 2.0) internal successors, (34), 17 states have internal predecessors, (34), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-28 02:42:33,732 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-28 02:42:37,740 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-28 02:42:40,821 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.06s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-28 02:42:46,139 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-28 02:42:50,584 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-28 02:43:08,107 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:43:08,107 INFO L93 Difference]: Finished difference Result 314 states and 382 transitions. [2024-11-28 02:43:08,108 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-11-28 02:43:08,108 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 2.0) internal successors, (34), 17 states have internal predecessors, (34), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 38 [2024-11-28 02:43:08,108 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:43:08,109 INFO L225 Difference]: With dead ends: 314 [2024-11-28 02:43:08,110 INFO L226 Difference]: Without dead ends: 314 [2024-11-28 02:43:08,110 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 153 ImplicationChecksByTransitivity, 5.5s TimeCoverageRelationStatistics Valid=132, Invalid=1428, Unknown=0, NotChecked=0, Total=1560 [2024-11-28 02:43:08,111 INFO L435 NwaCegarLoop]: 75 mSDtfsCounter, 159 mSDsluCounter, 842 mSDsCounter, 0 mSdLazyCounter, 1320 mSolverCounterSat, 19 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 35.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 159 SdHoareTripleChecker+Valid, 917 SdHoareTripleChecker+Invalid, 1343 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 1320 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 36.0s IncrementalHoareTripleChecker+Time [2024-11-28 02:43:08,111 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [159 Valid, 917 Invalid, 1343 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 1320 Invalid, 4 Unknown, 0 Unchecked, 36.0s Time] [2024-11-28 02:43:08,112 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 314 states. [2024-11-28 02:43:08,118 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 314 to 264. [2024-11-28 02:43:08,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 264 states, 213 states have (on average 1.5539906103286385) internal successors, (331), 252 states have internal predecessors, (331), 7 states have call successors, (7), 3 states have call predecessors, (7), 5 states have return successors, (10), 8 states have call predecessors, (10), 7 states have call successors, (10) [2024-11-28 02:43:08,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 264 states to 264 states and 348 transitions. [2024-11-28 02:43:08,121 INFO L78 Accepts]: Start accepts. Automaton has 264 states and 348 transitions. Word has length 38 [2024-11-28 02:43:08,121 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:43:08,121 INFO L471 AbstractCegarLoop]: Abstraction has 264 states and 348 transitions. [2024-11-28 02:43:08,121 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 17 states have (on average 2.0) internal successors, (34), 17 states have internal predecessors, (34), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-28 02:43:08,122 INFO L276 IsEmpty]: Start isEmpty. Operand 264 states and 348 transitions. [2024-11-28 02:43:08,122 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2024-11-28 02:43:08,122 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:43:08,122 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] [2024-11-28 02:43:08,137 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59a5a86a-8c5e-4252-a362-5ace54fdf036/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Ended with exit code 0 [2024-11-28 02:43:08,323 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59a5a86a-8c5e-4252-a362-5ace54fdf036/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:43:08,323 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr17REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [alloc_and_zeroErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alloc_and_zeroErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 54 more)] === [2024-11-28 02:43:08,324 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:43:08,324 INFO L85 PathProgramCache]: Analyzing trace with hash -383576910, now seen corresponding path program 1 times [2024-11-28 02:43:08,324 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-28 02:43:08,324 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [459884299] [2024-11-28 02:43:08,324 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:43:08,324 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:43:08,324 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59a5a86a-8c5e-4252-a362-5ace54fdf036/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:43:08,326 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59a5a86a-8c5e-4252-a362-5ace54fdf036/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:43:08,328 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59a5a86a-8c5e-4252-a362-5ace54fdf036/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2024-11-28 02:43:08,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:43:08,517 INFO L256 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 51 conjuncts are in the unsatisfiable core [2024-11-28 02:43:08,521 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:43:08,536 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 02:43:08,634 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-28 02:43:08,743 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 8 treesize of output 1 [2024-11-28 02:43:08,781 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2024-11-28 02:43:12,508 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 15 treesize of output 7 [2024-11-28 02:43:12,538 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2024-11-28 02:43:13,024 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 02:43:13,024 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 02:43:28,276 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59a5a86a-8c5e-4252-a362-5ace54fdf036/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 101 [2024-11-28 02:43:28,276 WARN L249 Executor]: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59a5a86a-8c5e-4252-a362-5ace54fdf036/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1) with exit command (exit)) stderr output: (error "out of memory") [2024-11-28 02:43:28,277 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-28 02:43:28,277 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [459884299] [2024-11-28 02:43:28,278 WARN L320 FreeRefinementEngine]: Global settings require throwing the following exception [2024-11-28 02:43:28,287 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59a5a86a-8c5e-4252-a362-5ace54fdf036/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Ended with exit code 0 [2024-11-28 02:43:28,478 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59a5a86a-8c5e-4252-a362-5ace54fdf036/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:43:28,479 FATAL L? ?]: An unrecoverable error occured during an interaction with an SMT solver: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59a5a86a-8c5e-4252-a362-5ace54fdf036/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1) with exit command (exit)) Received EOF on stdin. stderr output: (error "out of memory") at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:262) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parseCheckSatResult(Executor.java:281) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Scriptor.checkSat(Scriptor.java:155) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.checkSat(WrapperScript.java:163) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.checkSat(WrapperScript.java:163) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.ManagedScript.checkSat(ManagedScript.java:148) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.MonolithicImplicationChecker.checkImplication(MonolithicImplicationChecker.java:85) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier$PredicateComparison.compare(PredicateUnifier.java:912) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier$PredicateComparison.(PredicateUnifier.java:786) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate(PredicateUnifier.java:374) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate(PredicateUnifier.java:323) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp$UnifyPostprocessor.postprocess(TraceCheckSpWp.java:555) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer.applyPostprocessors(IterativePredicateTransformer.java:416) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer.computeBackwardSequence(IterativePredicateTransformer.java:395) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer.computeWeakestPreconditionSequence(IterativePredicateTransformer.java:267) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.computeInterpolantsUsingUnsatCore(TraceCheckSpWp.java:325) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.computeInterpolants(TraceCheckSpWp.java:181) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.(TraceCheckSpWp.java:160) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSpWp.construct(IpTcStrategyModuleSpWp.java:106) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSpWp.construct(IpTcStrategyModuleSpWp.java:1) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.isCorrect(IpTcStrategyModuleBase.java:57) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.checkFeasibility(AutomatonFreeRefinementEngine.java:210) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:121) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:317) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:407) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:342) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:324) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:428) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:314) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:275) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:167) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:140) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:132) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:167) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:150) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:127) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:233) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:227) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:144) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:106) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:319) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) Caused by: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: EOF at de.uni_freiburg.informatik.ultimate.smtsolver.external.Parser$Action$.CUP$do_action(Parser.java:1518) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Parser.do_action(Parser.java:701) at com.github.jhoenicke.javacup.runtime.LRParser.parse(LRParser.java:383) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:258) ... 45 more [2024-11-28 02:43:28,484 INFO L158 Benchmark]: Toolchain (without parser) took 184825.24ms. Allocated memory was 83.9MB in the beginning and 176.2MB in the end (delta: 92.3MB). Free memory was 60.0MB in the beginning and 124.5MB in the end (delta: -64.5MB). Peak memory consumption was 27.5MB. Max. memory is 16.1GB. [2024-11-28 02:43:28,484 INFO L158 Benchmark]: CDTParser took 0.58ms. Allocated memory is still 83.9MB. Free memory is still 48.3MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-28 02:43:28,485 INFO L158 Benchmark]: CACSL2BoogieTranslator took 806.91ms. Allocated memory is still 83.9MB. Free memory was 60.0MB in the beginning and 33.0MB in the end (delta: 27.1MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. [2024-11-28 02:43:28,485 INFO L158 Benchmark]: Boogie Procedure Inliner took 100.91ms. Allocated memory is still 83.9MB. Free memory was 33.0MB in the beginning and 30.8MB in the end (delta: 2.1MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-28 02:43:28,485 INFO L158 Benchmark]: Boogie Preprocessor took 150.02ms. Allocated memory is still 83.9MB. Free memory was 30.8MB in the beginning and 57.6MB in the end (delta: -26.7MB). Peak memory consumption was 11.1MB. Max. memory is 16.1GB. [2024-11-28 02:43:28,485 INFO L158 Benchmark]: RCFGBuilder took 1546.68ms. Allocated memory is still 83.9MB. Free memory was 57.2MB in the beginning and 52.2MB in the end (delta: 4.9MB). Peak memory consumption was 37.0MB. Max. memory is 16.1GB. [2024-11-28 02:43:28,485 INFO L158 Benchmark]: TraceAbstraction took 182210.47ms. Allocated memory was 83.9MB in the beginning and 176.2MB in the end (delta: 92.3MB). Free memory was 51.8MB in the beginning and 124.5MB in the end (delta: -72.8MB). Peak memory consumption was 21.4MB. Max. memory is 16.1GB. [2024-11-28 02:43:28,487 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.58ms. Allocated memory is still 83.9MB. Free memory is still 48.3MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 806.91ms. Allocated memory is still 83.9MB. Free memory was 60.0MB in the beginning and 33.0MB in the end (delta: 27.1MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 100.91ms. Allocated memory is still 83.9MB. Free memory was 33.0MB in the beginning and 30.8MB in the end (delta: 2.1MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 150.02ms. Allocated memory is still 83.9MB. Free memory was 30.8MB in the beginning and 57.6MB in the end (delta: -26.7MB). Peak memory consumption was 11.1MB. Max. memory is 16.1GB. * RCFGBuilder took 1546.68ms. Allocated memory is still 83.9MB. Free memory was 57.2MB in the beginning and 52.2MB in the end (delta: 4.9MB). Peak memory consumption was 37.0MB. Max. memory is 16.1GB. * TraceAbstraction took 182210.47ms. Allocated memory was 83.9MB in the beginning and 176.2MB in the end (delta: 92.3MB). Free memory was 51.8MB in the beginning and 124.5MB in the end (delta: -72.8MB). Peak memory consumption was 21.4MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: SMTLIBException: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59a5a86a-8c5e-4252-a362-5ace54fdf036/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1) with exit command (exit)) Received EOF on stdin. stderr output: (error "out of memory") de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMTLIBException: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59a5a86a-8c5e-4252-a362-5ace54fdf036/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1) with exit command (exit)) Received EOF on stdin. stderr output: (error "out of memory") : de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:262) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: ERROR: ExceptionOrErrorResult: SMTLIBException: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_59a5a86a-8c5e-4252-a362-5ace54fdf036/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1) with exit command (exit)) Received EOF on stdin. stderr output: (error "out of memory")