./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/memsafety-broom/linux-list-lst-data.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 826ab2ba Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba1c47ce-3c5d-48a4-a296-5baeabe11678/bin/uautomizer-verify-qhAvR1uOyd/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba1c47ce-3c5d-48a4-a296-5baeabe11678/bin/uautomizer-verify-qhAvR1uOyd/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba1c47ce-3c5d-48a4-a296-5baeabe11678/bin/uautomizer-verify-qhAvR1uOyd/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba1c47ce-3c5d-48a4-a296-5baeabe11678/bin/uautomizer-verify-qhAvR1uOyd/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/memsafety-broom/linux-list-lst-data.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba1c47ce-3c5d-48a4-a296-5baeabe11678/bin/uautomizer-verify-qhAvR1uOyd/config/svcomp-DerefFreeMemtrack-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba1c47ce-3c5d-48a4-a296-5baeabe11678/bin/uautomizer-verify-qhAvR1uOyd --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 4ccf2c6cbb7828d48e51abf8a05e6b57c732fac1f8d9fff9fd3d0e0c2919368a --- Real Ultimate output --- This is Ultimate 0.3.0-dev-826ab2b [2024-11-13 15:48:54,539 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-13 15:48:54,642 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba1c47ce-3c5d-48a4-a296-5baeabe11678/bin/uautomizer-verify-qhAvR1uOyd/config/svcomp-DerefFreeMemtrack-64bit-Automizer_Default.epf [2024-11-13 15:48:54,647 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-13 15:48:54,647 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-13 15:48:54,684 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-13 15:48:54,684 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-13 15:48:54,684 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-13 15:48:54,685 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-13 15:48:54,685 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-13 15:48:54,685 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-13 15:48:54,685 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-13 15:48:54,686 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-13 15:48:54,686 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-13 15:48:54,686 INFO L153 SettingsManager]: * Use SBE=true [2024-11-13 15:48:54,686 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-13 15:48:54,686 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-13 15:48:54,686 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-13 15:48:54,688 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-11-13 15:48:54,689 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-11-13 15:48:54,689 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-11-13 15:48:54,689 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-13 15:48:54,689 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-13 15:48:54,690 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-13 15:48:54,690 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-13 15:48:54,690 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-13 15:48:54,690 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-13 15:48:54,690 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-13 15:48:54,690 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-13 15:48:54,690 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-13 15:48:54,691 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-13 15:48:54,691 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-13 15:48:54,691 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-13 15:48:54,691 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-13 15:48:54,691 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-13 15:48:54,692 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-13 15:48:54,692 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-13 15:48:54,692 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-13 15:48:54,692 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-13 15:48:54,692 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_ba1c47ce-3c5d-48a4-a296-5baeabe11678/bin/uautomizer-verify-qhAvR1uOyd Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4ccf2c6cbb7828d48e51abf8a05e6b57c732fac1f8d9fff9fd3d0e0c2919368a [2024-11-13 15:48:54,960 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-13 15:48:54,968 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-13 15:48:54,971 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-13 15:48:54,972 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-13 15:48:54,973 INFO L274 PluginConnector]: CDTParser initialized [2024-11-13 15:48:54,974 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba1c47ce-3c5d-48a4-a296-5baeabe11678/bin/uautomizer-verify-qhAvR1uOyd/../../sv-benchmarks/c/memsafety-broom/linux-list-lst-data.i Unable to find full path for "g++" [2024-11-13 15:48:56,874 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-13 15:48:57,322 INFO L384 CDTParser]: Found 1 translation units. [2024-11-13 15:48:57,323 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba1c47ce-3c5d-48a4-a296-5baeabe11678/sv-benchmarks/c/memsafety-broom/linux-list-lst-data.i [2024-11-13 15:48:57,344 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba1c47ce-3c5d-48a4-a296-5baeabe11678/bin/uautomizer-verify-qhAvR1uOyd/data/5336a5d9e/c717973736d54af9af0895e857b0582a/FLAGd6c313961 [2024-11-13 15:48:57,361 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba1c47ce-3c5d-48a4-a296-5baeabe11678/bin/uautomizer-verify-qhAvR1uOyd/data/5336a5d9e/c717973736d54af9af0895e857b0582a [2024-11-13 15:48:57,364 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-13 15:48:57,365 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-13 15:48:57,367 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-13 15:48:57,367 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-13 15:48:57,371 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-13 15:48:57,372 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 03:48:57" (1/1) ... [2024-11-13 15:48:57,373 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@64126378 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:48:57, skipping insertion in model container [2024-11-13 15:48:57,373 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 03:48:57" (1/1) ... [2024-11-13 15:48:57,421 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-13 15:48:57,798 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-13 15:48:57,812 ERROR L321 MainTranslator]: Unsupported Syntax: Found a cast between two array/pointer types of different sizes while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) [2024-11-13 15:48:57,812 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@3d67016 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:48:57, skipping insertion in model container [2024-11-13 15:48:57,812 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-13 15:48:57,813 INFO L186 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2024-11-13 15:48:57,817 INFO L158 Benchmark]: Toolchain (without parser) took 448.76ms. Allocated memory is still 117.4MB. Free memory was 93.2MB in the beginning and 78.8MB in the end (delta: 14.4MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2024-11-13 15:48:57,817 INFO L158 Benchmark]: CDTParser took 0.39ms. Allocated memory is still 142.6MB. Free memory is still 81.1MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-13 15:48:57,817 INFO L158 Benchmark]: CACSL2BoogieTranslator took 446.28ms. Allocated memory is still 117.4MB. Free memory was 92.9MB in the beginning and 78.8MB in the end (delta: 14.1MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2024-11-13 15:48:57,819 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.39ms. Allocated memory is still 142.6MB. Free memory is still 81.1MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 446.28ms. Allocated memory is still 117.4MB. Free memory was 92.9MB in the beginning and 78.8MB in the end (delta: 14.1MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 2490]: 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_ba1c47ce-3c5d-48a4-a296-5baeabe11678/bin/uautomizer-verify-qhAvR1uOyd/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba1c47ce-3c5d-48a4-a296-5baeabe11678/bin/uautomizer-verify-qhAvR1uOyd/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba1c47ce-3c5d-48a4-a296-5baeabe11678/bin/uautomizer-verify-qhAvR1uOyd/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba1c47ce-3c5d-48a4-a296-5baeabe11678/bin/uautomizer-verify-qhAvR1uOyd/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/memsafety-broom/linux-list-lst-data.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba1c47ce-3c5d-48a4-a296-5baeabe11678/bin/uautomizer-verify-qhAvR1uOyd/config/svcomp-DerefFreeMemtrack-64bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba1c47ce-3c5d-48a4-a296-5baeabe11678/bin/uautomizer-verify-qhAvR1uOyd --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 4ccf2c6cbb7828d48e51abf8a05e6b57c732fac1f8d9fff9fd3d0e0c2919368a --- Real Ultimate output --- This is Ultimate 0.3.0-dev-826ab2b [2024-11-13 15:49:00,388 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-13 15:49:00,512 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba1c47ce-3c5d-48a4-a296-5baeabe11678/bin/uautomizer-verify-qhAvR1uOyd/config/svcomp-DerefFreeMemtrack-64bit-Automizer_Bitvector.epf [2024-11-13 15:49:00,519 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-13 15:49:00,519 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-13 15:49:00,587 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-13 15:49:00,588 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-13 15:49:00,588 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-13 15:49:00,588 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-13 15:49:00,588 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-13 15:49:00,589 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-13 15:49:00,589 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-13 15:49:00,589 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-13 15:49:00,589 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-13 15:49:00,589 INFO L153 SettingsManager]: * Use SBE=true [2024-11-13 15:49:00,589 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-13 15:49:00,589 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-13 15:49:00,590 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-13 15:49:00,590 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-11-13 15:49:00,590 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-11-13 15:49:00,590 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-11-13 15:49:00,590 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-13 15:49:00,590 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-13 15:49:00,590 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2024-11-13 15:49:00,591 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-13 15:49:00,591 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2024-11-13 15:49:00,592 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-13 15:49:00,592 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-13 15:49:00,592 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-13 15:49:00,592 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-13 15:49:00,592 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-13 15:49:00,592 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-13 15:49:00,592 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-13 15:49:00,592 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-13 15:49:00,592 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-13 15:49:00,593 INFO L153 SettingsManager]: * Trace refinement strategy=FOX [2024-11-13 15:49:00,593 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2024-11-13 15:49:00,593 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-13 15:49:00,593 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-13 15:49:00,593 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-13 15:49:00,593 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-13 15:49:00,593 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_ba1c47ce-3c5d-48a4-a296-5baeabe11678/bin/uautomizer-verify-qhAvR1uOyd Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4ccf2c6cbb7828d48e51abf8a05e6b57c732fac1f8d9fff9fd3d0e0c2919368a [2024-11-13 15:49:00,891 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-13 15:49:00,900 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-13 15:49:00,902 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-13 15:49:00,903 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-13 15:49:00,904 INFO L274 PluginConnector]: CDTParser initialized [2024-11-13 15:49:00,905 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba1c47ce-3c5d-48a4-a296-5baeabe11678/bin/uautomizer-verify-qhAvR1uOyd/../../sv-benchmarks/c/memsafety-broom/linux-list-lst-data.i Unable to find full path for "g++" [2024-11-13 15:49:02,904 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-13 15:49:03,269 INFO L384 CDTParser]: Found 1 translation units. [2024-11-13 15:49:03,274 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba1c47ce-3c5d-48a4-a296-5baeabe11678/sv-benchmarks/c/memsafety-broom/linux-list-lst-data.i [2024-11-13 15:49:03,319 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba1c47ce-3c5d-48a4-a296-5baeabe11678/bin/uautomizer-verify-qhAvR1uOyd/data/6837049bd/d1d7d237025e4b47b06e85d30f2aceaf/FLAG0d8366353 [2024-11-13 15:49:03,342 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba1c47ce-3c5d-48a4-a296-5baeabe11678/bin/uautomizer-verify-qhAvR1uOyd/data/6837049bd/d1d7d237025e4b47b06e85d30f2aceaf [2024-11-13 15:49:03,345 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-13 15:49:03,347 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-13 15:49:03,349 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-13 15:49:03,349 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-13 15:49:03,353 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-13 15:49:03,354 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 03:49:03" (1/1) ... [2024-11-13 15:49:03,357 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@70d2bda6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:49:03, skipping insertion in model container [2024-11-13 15:49:03,357 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 03:49:03" (1/1) ... [2024-11-13 15:49:03,427 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-13 15:49:03,801 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-13 15:49:03,813 INFO L197 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2024-11-13 15:49:03,827 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-13 15:49:03,886 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-13 15:49:03,890 INFO L200 MainTranslator]: Completed pre-run [2024-11-13 15:49:03,935 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-13 15:49:03,965 INFO L204 MainTranslator]: Completed translation [2024-11-13 15:49:03,966 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:49:03 WrapperNode [2024-11-13 15:49:03,966 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-13 15:49:03,967 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-13 15:49:03,967 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-13 15:49:03,967 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-13 15:49:03,973 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:49:03" (1/1) ... [2024-11-13 15:49:03,995 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:49:03" (1/1) ... [2024-11-13 15:49:04,024 INFO L138 Inliner]: procedures = 125, calls = 33, calls flagged for inlining = 10, calls inlined = 10, statements flattened = 98 [2024-11-13 15:49:04,025 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-13 15:49:04,025 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-13 15:49:04,025 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-13 15:49:04,025 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-13 15:49:04,035 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:49:03" (1/1) ... [2024-11-13 15:49:04,035 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:49:03" (1/1) ... [2024-11-13 15:49:04,044 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:49:03" (1/1) ... [2024-11-13 15:49:04,074 INFO L175 MemorySlicer]: Split 19 memory accesses to 1 slices as follows [19]. 100 percent of accesses are in the largest equivalence class. The 0 initializations are split as follows [0]. The 11 writes are split as follows [11]. [2024-11-13 15:49:04,074 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:49:03" (1/1) ... [2024-11-13 15:49:04,074 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:49:03" (1/1) ... [2024-11-13 15:49:04,085 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:49:03" (1/1) ... [2024-11-13 15:49:04,088 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:49:03" (1/1) ... [2024-11-13 15:49:04,090 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:49:03" (1/1) ... [2024-11-13 15:49:04,091 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:49:03" (1/1) ... [2024-11-13 15:49:04,097 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-13 15:49:04,098 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-13 15:49:04,098 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-13 15:49:04,098 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-13 15:49:04,099 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:49:03" (1/1) ... [2024-11-13 15:49:04,108 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-13 15:49:04,122 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba1c47ce-3c5d-48a4-a296-5baeabe11678/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:49:04,134 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba1c47ce-3c5d-48a4-a296-5baeabe11678/bin/uautomizer-verify-qhAvR1uOyd/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-13 15:49:04,140 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba1c47ce-3c5d-48a4-a296-5baeabe11678/bin/uautomizer-verify-qhAvR1uOyd/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-13 15:49:04,162 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-13 15:49:04,162 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2024-11-13 15:49:04,162 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2024-11-13 15:49:04,162 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-13 15:49:04,162 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#0 [2024-11-13 15:49:04,162 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-13 15:49:04,163 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-13 15:49:04,310 INFO L238 CfgBuilder]: Building ICFG [2024-11-13 15:49:04,312 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-13 15:49:04,957 INFO L? ?]: Removed 137 outVars from TransFormulas that were not future-live. [2024-11-13 15:49:04,957 INFO L287 CfgBuilder]: Performing block encoding [2024-11-13 15:49:04,970 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-13 15:49:04,971 INFO L316 CfgBuilder]: Removed 5 assume(true) statements. [2024-11-13 15:49:04,971 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 03:49:04 BoogieIcfgContainer [2024-11-13 15:49:04,971 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-13 15:49:04,974 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-13 15:49:04,974 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-13 15:49:04,978 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-13 15:49:04,979 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.11 03:49:03" (1/3) ... [2024-11-13 15:49:04,980 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@502021a2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 03:49:04, skipping insertion in model container [2024-11-13 15:49:04,980 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 03:49:03" (2/3) ... [2024-11-13 15:49:04,980 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@502021a2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 03:49:04, skipping insertion in model container [2024-11-13 15:49:04,981 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 03:49:04" (3/3) ... [2024-11-13 15:49:04,982 INFO L112 eAbstractionObserver]: Analyzing ICFG linux-list-lst-data.i [2024-11-13 15:49:04,997 INFO L217 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-13 15:49:05,000 INFO L154 ceAbstractionStarter]: Applying trace abstraction to ICFG linux-list-lst-data.i that has 1 procedures, 97 locations, 1 initial locations, 4 loop locations, and 45 error locations. [2024-11-13 15:49:05,048 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-13 15:49:05,063 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;@7226d2de, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-13 15:49:05,064 INFO L334 AbstractCegarLoop]: Starting to check reachability of 45 error locations. [2024-11-13 15:49:05,070 INFO L276 IsEmpty]: Start isEmpty. Operand has 97 states, 51 states have (on average 2.0392156862745097) internal successors, (104), 96 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:49:05,079 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2024-11-13 15:49:05,079 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 15:49:05,080 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1] [2024-11-13 15:49:05,080 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 42 more)] === [2024-11-13 15:49:05,087 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:49:05,088 INFO L85 PathProgramCache]: Analyzing trace with hash 29860, now seen corresponding path program 1 times [2024-11-13 15:49:05,099 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-13 15:49:05,100 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [279278374] [2024-11-13 15:49:05,100 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:49:05,101 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:49:05,101 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba1c47ce-3c5d-48a4-a296-5baeabe11678/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:49:05,104 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba1c47ce-3c5d-48a4-a296-5baeabe11678/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 15:49:05,106 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba1c47ce-3c5d-48a4-a296-5baeabe11678/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-13 15:49:05,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:49:05,204 INFO L255 TraceCheckSpWp]: Trace formula consists of 15 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-13 15:49:05,208 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:49:05,258 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2024-11-13 15:49:05,285 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:49:05,286 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 15:49:05,286 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-13 15:49:05,286 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [279278374] [2024-11-13 15:49:05,287 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [279278374] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 15:49:05,288 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 15:49:05,288 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-13 15:49:05,289 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1933459994] [2024-11-13 15:49:05,290 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 15:49:05,293 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-13 15:49:05,294 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-13 15:49:05,314 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-13 15:49:05,315 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 15:49:05,317 INFO L87 Difference]: Start difference. First operand has 97 states, 51 states have (on average 2.0392156862745097) internal successors, (104), 96 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:49:05,583 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 15:49:05,584 INFO L93 Difference]: Finished difference Result 95 states and 97 transitions. [2024-11-13 15:49:05,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-13 15:49:05,587 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3 [2024-11-13 15:49:05,587 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 15:49:05,594 INFO L225 Difference]: With dead ends: 95 [2024-11-13 15:49:05,594 INFO L226 Difference]: Without dead ends: 93 [2024-11-13 15:49:05,596 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 15:49:05,600 INFO L432 NwaCegarLoop]: 78 mSDtfsCounter, 27 mSDsluCounter, 35 mSDsCounter, 0 mSdLazyCounter, 52 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 113 SdHoareTripleChecker+Invalid, 54 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 52 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-13 15:49:05,603 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [27 Valid, 113 Invalid, 54 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 52 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-13 15:49:05,618 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2024-11-13 15:49:05,639 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 93. [2024-11-13 15:49:05,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 93 states, 50 states have (on average 1.9) internal successors, (95), 92 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:49:05,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 95 transitions. [2024-11-13 15:49:05,648 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 95 transitions. Word has length 3 [2024-11-13 15:49:05,648 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 15:49:05,648 INFO L471 AbstractCegarLoop]: Abstraction has 93 states and 95 transitions. [2024-11-13 15:49:05,649 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:49:05,649 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 95 transitions. [2024-11-13 15:49:05,649 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2024-11-13 15:49:05,649 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 15:49:05,649 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1] [2024-11-13 15:49:05,669 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba1c47ce-3c5d-48a4-a296-5baeabe11678/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-13 15:49:05,850 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba1c47ce-3c5d-48a4-a296-5baeabe11678/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:49:05,850 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 42 more)] === [2024-11-13 15:49:05,851 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:49:05,853 INFO L85 PathProgramCache]: Analyzing trace with hash 29861, now seen corresponding path program 1 times [2024-11-13 15:49:05,854 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-13 15:49:05,854 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [500901905] [2024-11-13 15:49:05,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:49:05,854 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:49:05,854 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba1c47ce-3c5d-48a4-a296-5baeabe11678/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:49:05,856 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba1c47ce-3c5d-48a4-a296-5baeabe11678/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 15:49:05,857 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba1c47ce-3c5d-48a4-a296-5baeabe11678/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-13 15:49:05,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:49:05,922 INFO L255 TraceCheckSpWp]: Trace formula consists of 15 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-13 15:49:05,923 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:49:05,946 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2024-11-13 15:49:05,962 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:49:05,963 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 15:49:05,963 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-13 15:49:05,963 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [500901905] [2024-11-13 15:49:05,963 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [500901905] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 15:49:05,963 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 15:49:05,963 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-13 15:49:05,964 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2081732302] [2024-11-13 15:49:05,964 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 15:49:05,966 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-13 15:49:05,966 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-13 15:49:05,966 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-13 15:49:05,967 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 15:49:05,967 INFO L87 Difference]: Start difference. First operand 93 states and 95 transitions. Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:49:06,332 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 15:49:06,332 INFO L93 Difference]: Finished difference Result 94 states and 97 transitions. [2024-11-13 15:49:06,333 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-13 15:49:06,334 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3 [2024-11-13 15:49:06,334 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 15:49:06,335 INFO L225 Difference]: With dead ends: 94 [2024-11-13 15:49:06,335 INFO L226 Difference]: Without dead ends: 94 [2024-11-13 15:49:06,335 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 15:49:06,336 INFO L432 NwaCegarLoop]: 89 mSDtfsCounter, 5 mSDsluCounter, 51 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 140 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-13 15:49:06,336 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 140 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-13 15:49:06,337 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2024-11-13 15:49:06,341 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 91. [2024-11-13 15:49:06,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 91 states, 50 states have (on average 1.86) internal successors, (93), 90 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:49:06,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 93 transitions. [2024-11-13 15:49:06,342 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 93 transitions. Word has length 3 [2024-11-13 15:49:06,343 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 15:49:06,343 INFO L471 AbstractCegarLoop]: Abstraction has 91 states and 93 transitions. [2024-11-13 15:49:06,343 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:49:06,343 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 93 transitions. [2024-11-13 15:49:06,343 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2024-11-13 15:49:06,343 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 15:49:06,343 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 15:49:06,360 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba1c47ce-3c5d-48a4-a296-5baeabe11678/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-13 15:49:06,544 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba1c47ce-3c5d-48a4-a296-5baeabe11678/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:49:06,544 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 42 more)] === [2024-11-13 15:49:06,544 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:49:06,545 INFO L85 PathProgramCache]: Analyzing trace with hash 148077583, now seen corresponding path program 1 times [2024-11-13 15:49:06,545 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-13 15:49:06,545 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1468770513] [2024-11-13 15:49:06,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:49:06,545 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:49:06,545 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba1c47ce-3c5d-48a4-a296-5baeabe11678/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:49:06,547 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba1c47ce-3c5d-48a4-a296-5baeabe11678/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 15:49:06,549 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba1c47ce-3c5d-48a4-a296-5baeabe11678/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-13 15:49:06,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:49:06,672 INFO L255 TraceCheckSpWp]: Trace formula consists of 52 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-13 15:49:06,673 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:49:06,683 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2024-11-13 15:49:06,692 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:49:06,693 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 15:49:06,693 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-13 15:49:06,693 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1468770513] [2024-11-13 15:49:06,693 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1468770513] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 15:49:06,693 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 15:49:06,693 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-13 15:49:06,693 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [731229066] [2024-11-13 15:49:06,694 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 15:49:06,694 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-13 15:49:06,694 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-13 15:49:06,694 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-13 15:49:06,695 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 15:49:06,695 INFO L87 Difference]: Start difference. First operand 91 states and 93 transitions. Second operand has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:49:06,984 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 15:49:06,984 INFO L93 Difference]: Finished difference Result 90 states and 92 transitions. [2024-11-13 15:49:06,984 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-13 15:49:06,985 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2024-11-13 15:49:06,985 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 15:49:06,985 INFO L225 Difference]: With dead ends: 90 [2024-11-13 15:49:06,986 INFO L226 Difference]: Without dead ends: 90 [2024-11-13 15:49:06,986 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 15:49:06,987 INFO L432 NwaCegarLoop]: 89 mSDtfsCounter, 1 mSDsluCounter, 45 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 134 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-13 15:49:06,987 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 134 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-13 15:49:06,988 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2024-11-13 15:49:06,991 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 90. [2024-11-13 15:49:06,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 90 states, 50 states have (on average 1.84) internal successors, (92), 89 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:49:06,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 92 transitions. [2024-11-13 15:49:06,993 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 92 transitions. Word has length 8 [2024-11-13 15:49:06,993 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 15:49:06,993 INFO L471 AbstractCegarLoop]: Abstraction has 90 states and 92 transitions. [2024-11-13 15:49:06,993 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:49:06,993 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 92 transitions. [2024-11-13 15:49:06,994 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2024-11-13 15:49:06,994 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 15:49:06,994 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 15:49:07,014 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba1c47ce-3c5d-48a4-a296-5baeabe11678/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-11-13 15:49:07,194 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba1c47ce-3c5d-48a4-a296-5baeabe11678/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:49:07,194 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 42 more)] === [2024-11-13 15:49:07,195 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:49:07,195 INFO L85 PathProgramCache]: Analyzing trace with hash 148077584, now seen corresponding path program 1 times [2024-11-13 15:49:07,196 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-13 15:49:07,196 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2108611651] [2024-11-13 15:49:07,196 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:49:07,197 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:49:07,197 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba1c47ce-3c5d-48a4-a296-5baeabe11678/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:49:07,199 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba1c47ce-3c5d-48a4-a296-5baeabe11678/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 15:49:07,202 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba1c47ce-3c5d-48a4-a296-5baeabe11678/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-13 15:49:07,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:49:07,277 INFO L255 TraceCheckSpWp]: Trace formula consists of 52 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-13 15:49:07,278 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:49:07,294 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2024-11-13 15:49:07,307 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:49:07,308 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 15:49:07,308 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-13 15:49:07,308 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2108611651] [2024-11-13 15:49:07,308 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2108611651] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 15:49:07,308 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 15:49:07,308 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-13 15:49:07,308 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [969395588] [2024-11-13 15:49:07,308 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 15:49:07,308 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-13 15:49:07,308 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-13 15:49:07,310 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-13 15:49:07,310 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 15:49:07,310 INFO L87 Difference]: Start difference. First operand 90 states and 92 transitions. Second operand has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:49:07,606 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 15:49:07,606 INFO L93 Difference]: Finished difference Result 89 states and 91 transitions. [2024-11-13 15:49:07,608 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-13 15:49:07,608 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2024-11-13 15:49:07,609 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 15:49:07,609 INFO L225 Difference]: With dead ends: 89 [2024-11-13 15:49:07,609 INFO L226 Difference]: Without dead ends: 89 [2024-11-13 15:49:07,609 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 15:49:07,610 INFO L432 NwaCegarLoop]: 89 mSDtfsCounter, 1 mSDsluCounter, 51 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 140 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-13 15:49:07,610 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 140 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-13 15:49:07,611 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2024-11-13 15:49:07,617 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 89. [2024-11-13 15:49:07,621 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 89 states, 50 states have (on average 1.82) internal successors, (91), 88 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:49:07,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 91 transitions. [2024-11-13 15:49:07,622 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 91 transitions. Word has length 8 [2024-11-13 15:49:07,623 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 15:49:07,623 INFO L471 AbstractCegarLoop]: Abstraction has 89 states and 91 transitions. [2024-11-13 15:49:07,623 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:49:07,623 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 91 transitions. [2024-11-13 15:49:07,623 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2024-11-13 15:49:07,623 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 15:49:07,623 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 15:49:07,640 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba1c47ce-3c5d-48a4-a296-5baeabe11678/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-13 15:49:07,823 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba1c47ce-3c5d-48a4-a296-5baeabe11678/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:49:07,824 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr16REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 42 more)] === [2024-11-13 15:49:07,824 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:49:07,824 INFO L85 PathProgramCache]: Analyzing trace with hash 568603693, now seen corresponding path program 1 times [2024-11-13 15:49:07,825 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-13 15:49:07,825 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [866987627] [2024-11-13 15:49:07,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:49:07,825 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:49:07,825 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba1c47ce-3c5d-48a4-a296-5baeabe11678/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:49:07,827 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba1c47ce-3c5d-48a4-a296-5baeabe11678/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 15:49:07,828 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba1c47ce-3c5d-48a4-a296-5baeabe11678/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-13 15:49:07,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:49:07,904 INFO L255 TraceCheckSpWp]: Trace formula consists of 52 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-13 15:49:07,905 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:49:07,963 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:49:07,963 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 15:49:07,964 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-13 15:49:07,964 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [866987627] [2024-11-13 15:49:07,964 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [866987627] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 15:49:07,964 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 15:49:07,964 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-13 15:49:07,964 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [776807591] [2024-11-13 15:49:07,964 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 15:49:07,964 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-13 15:49:07,964 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-13 15:49:07,965 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-13 15:49:07,965 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-13 15:49:07,965 INFO L87 Difference]: Start difference. First operand 89 states and 91 transitions. Second operand has 5 states, 4 states have (on average 2.5) internal successors, (10), 5 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:49:08,365 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 15:49:08,365 INFO L93 Difference]: Finished difference Result 88 states and 90 transitions. [2024-11-13 15:49:08,366 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-13 15:49:08,366 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.5) internal successors, (10), 5 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2024-11-13 15:49:08,366 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 15:49:08,366 INFO L225 Difference]: With dead ends: 88 [2024-11-13 15:49:08,366 INFO L226 Difference]: Without dead ends: 88 [2024-11-13 15:49:08,367 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-13 15:49:08,367 INFO L432 NwaCegarLoop]: 67 mSDtfsCounter, 28 mSDsluCounter, 110 mSDsCounter, 0 mSdLazyCounter, 146 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 177 SdHoareTripleChecker+Invalid, 148 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 146 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-13 15:49:08,368 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [28 Valid, 177 Invalid, 148 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 146 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-13 15:49:08,369 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2024-11-13 15:49:08,371 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 88. [2024-11-13 15:49:08,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 88 states, 50 states have (on average 1.8) internal successors, (90), 87 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:49:08,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 90 transitions. [2024-11-13 15:49:08,372 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 90 transitions. Word has length 10 [2024-11-13 15:49:08,373 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 15:49:08,373 INFO L471 AbstractCegarLoop]: Abstraction has 88 states and 90 transitions. [2024-11-13 15:49:08,373 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.5) internal successors, (10), 5 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:49:08,373 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 90 transitions. [2024-11-13 15:49:08,373 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2024-11-13 15:49:08,373 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 15:49:08,374 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 15:49:08,392 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba1c47ce-3c5d-48a4-a296-5baeabe11678/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-13 15:49:08,574 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba1c47ce-3c5d-48a4-a296-5baeabe11678/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:49:08,574 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr17REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 42 more)] === [2024-11-13 15:49:08,574 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:49:08,575 INFO L85 PathProgramCache]: Analyzing trace with hash 568603694, now seen corresponding path program 1 times [2024-11-13 15:49:08,575 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-13 15:49:08,575 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [163396773] [2024-11-13 15:49:08,575 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:49:08,575 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:49:08,575 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba1c47ce-3c5d-48a4-a296-5baeabe11678/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:49:08,577 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba1c47ce-3c5d-48a4-a296-5baeabe11678/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 15:49:08,578 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba1c47ce-3c5d-48a4-a296-5baeabe11678/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-13 15:49:08,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:49:08,649 INFO L255 TraceCheckSpWp]: Trace formula consists of 52 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-13 15:49:08,651 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:49:08,659 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2024-11-13 15:49:08,821 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:49:08,821 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 15:49:08,822 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-13 15:49:08,822 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [163396773] [2024-11-13 15:49:08,822 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [163396773] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 15:49:08,822 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 15:49:08,822 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-13 15:49:08,822 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [510103391] [2024-11-13 15:49:08,822 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 15:49:08,822 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-13 15:49:08,822 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-13 15:49:08,823 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-13 15:49:08,823 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-13 15:49:08,823 INFO L87 Difference]: Start difference. First operand 88 states and 90 transitions. Second operand has 5 states, 4 states have (on average 2.5) internal successors, (10), 5 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:49:09,360 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 15:49:09,361 INFO L93 Difference]: Finished difference Result 100 states and 104 transitions. [2024-11-13 15:49:09,362 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-13 15:49:09,362 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.5) internal successors, (10), 5 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2024-11-13 15:49:09,362 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 15:49:09,363 INFO L225 Difference]: With dead ends: 100 [2024-11-13 15:49:09,363 INFO L226 Difference]: Without dead ends: 100 [2024-11-13 15:49:09,364 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-13 15:49:09,364 INFO L432 NwaCegarLoop]: 80 mSDtfsCounter, 8 mSDsluCounter, 144 mSDsCounter, 0 mSdLazyCounter, 132 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 224 SdHoareTripleChecker+Invalid, 132 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 132 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-13 15:49:09,365 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 224 Invalid, 132 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 132 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-13 15:49:09,366 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2024-11-13 15:49:09,370 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 93. [2024-11-13 15:49:09,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 93 states, 55 states have (on average 1.7454545454545454) internal successors, (96), 92 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:49:09,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 96 transitions. [2024-11-13 15:49:09,371 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 96 transitions. Word has length 10 [2024-11-13 15:49:09,372 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 15:49:09,372 INFO L471 AbstractCegarLoop]: Abstraction has 93 states and 96 transitions. [2024-11-13 15:49:09,372 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.5) internal successors, (10), 5 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:49:09,372 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 96 transitions. [2024-11-13 15:49:09,372 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2024-11-13 15:49:09,372 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 15:49:09,372 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 15:49:09,390 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba1c47ce-3c5d-48a4-a296-5baeabe11678/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-11-13 15:49:09,573 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba1c47ce-3c5d-48a4-a296-5baeabe11678/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:49:09,573 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 42 more)] === [2024-11-13 15:49:09,573 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:49:09,573 INFO L85 PathProgramCache]: Analyzing trace with hash 568636496, now seen corresponding path program 1 times [2024-11-13 15:49:09,573 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-13 15:49:09,573 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1533382960] [2024-11-13 15:49:09,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:49:09,574 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:49:09,574 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba1c47ce-3c5d-48a4-a296-5baeabe11678/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:49:09,575 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba1c47ce-3c5d-48a4-a296-5baeabe11678/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 15:49:09,577 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba1c47ce-3c5d-48a4-a296-5baeabe11678/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-13 15:49:09,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:49:09,688 INFO L255 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-13 15:49:09,690 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:49:09,764 INFO L349 Elim1Store]: treesize reduction 24, result has 33.3 percent of original size [2024-11-13 15:49:09,764 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 21 treesize of output 20 [2024-11-13 15:49:09,796 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:49:09,796 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 15:49:09,796 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-13 15:49:09,797 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1533382960] [2024-11-13 15:49:09,797 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1533382960] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 15:49:09,797 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 15:49:09,798 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-13 15:49:09,798 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1782729093] [2024-11-13 15:49:09,798 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 15:49:09,798 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-13 15:49:09,798 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-13 15:49:09,799 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-13 15:49:09,799 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-13 15:49:09,799 INFO L87 Difference]: Start difference. First operand 93 states and 96 transitions. Second operand has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:49:10,119 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 15:49:10,120 INFO L93 Difference]: Finished difference Result 92 states and 95 transitions. [2024-11-13 15:49:10,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-13 15:49:10,121 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2024-11-13 15:49:10,121 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 15:49:10,122 INFO L225 Difference]: With dead ends: 92 [2024-11-13 15:49:10,122 INFO L226 Difference]: Without dead ends: 92 [2024-11-13 15:49:10,123 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-13 15:49:10,123 INFO L432 NwaCegarLoop]: 72 mSDtfsCounter, 20 mSDsluCounter, 77 mSDsCounter, 0 mSdLazyCounter, 90 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 149 SdHoareTripleChecker+Invalid, 91 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 90 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-13 15:49:10,125 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 149 Invalid, 91 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 90 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-13 15:49:10,125 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2024-11-13 15:49:10,129 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 92. [2024-11-13 15:49:10,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 92 states, 55 states have (on average 1.7272727272727273) internal successors, (95), 91 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:49:10,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 95 transitions. [2024-11-13 15:49:10,135 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 95 transitions. Word has length 10 [2024-11-13 15:49:10,135 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 15:49:10,135 INFO L471 AbstractCegarLoop]: Abstraction has 92 states and 95 transitions. [2024-11-13 15:49:10,135 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:49:10,135 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 95 transitions. [2024-11-13 15:49:10,135 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2024-11-13 15:49:10,136 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 15:49:10,136 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 15:49:10,155 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba1c47ce-3c5d-48a4-a296-5baeabe11678/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-13 15:49:10,336 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba1c47ce-3c5d-48a4-a296-5baeabe11678/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:49:10,336 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 42 more)] === [2024-11-13 15:49:10,337 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:49:10,337 INFO L85 PathProgramCache]: Analyzing trace with hash 568636497, now seen corresponding path program 1 times [2024-11-13 15:49:10,337 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-13 15:49:10,337 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [487660651] [2024-11-13 15:49:10,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:49:10,338 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:49:10,338 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba1c47ce-3c5d-48a4-a296-5baeabe11678/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:49:10,340 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba1c47ce-3c5d-48a4-a296-5baeabe11678/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 15:49:10,342 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba1c47ce-3c5d-48a4-a296-5baeabe11678/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-13 15:49:10,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:49:10,442 INFO L255 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-11-13 15:49:10,444 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:49:10,454 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2024-11-13 15:49:10,574 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 15:49:10,575 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 9 [2024-11-13 15:49:10,592 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2024-11-13 15:49:10,592 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2024-11-13 15:49:10,636 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:49:10,636 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 15:49:10,636 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-13 15:49:10,636 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [487660651] [2024-11-13 15:49:10,636 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [487660651] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 15:49:10,636 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 15:49:10,636 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-13 15:49:10,637 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1382198359] [2024-11-13 15:49:10,637 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 15:49:10,637 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-13 15:49:10,637 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-13 15:49:10,638 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-13 15:49:10,638 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-13 15:49:10,638 INFO L87 Difference]: Start difference. First operand 92 states and 95 transitions. Second operand has 5 states, 4 states have (on average 2.5) internal successors, (10), 5 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:49:11,152 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 15:49:11,153 INFO L93 Difference]: Finished difference Result 91 states and 94 transitions. [2024-11-13 15:49:11,153 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-13 15:49:11,153 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.5) internal successors, (10), 5 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2024-11-13 15:49:11,153 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 15:49:11,154 INFO L225 Difference]: With dead ends: 91 [2024-11-13 15:49:11,154 INFO L226 Difference]: Without dead ends: 91 [2024-11-13 15:49:11,154 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-11-13 15:49:11,154 INFO L432 NwaCegarLoop]: 68 mSDtfsCounter, 20 mSDsluCounter, 106 mSDsCounter, 0 mSdLazyCounter, 126 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 174 SdHoareTripleChecker+Invalid, 128 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 126 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-13 15:49:11,155 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 174 Invalid, 128 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 126 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-13 15:49:11,155 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2024-11-13 15:49:11,158 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 91. [2024-11-13 15:49:11,159 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 91 states, 55 states have (on average 1.709090909090909) internal successors, (94), 90 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:49:11,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 94 transitions. [2024-11-13 15:49:11,159 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 94 transitions. Word has length 10 [2024-11-13 15:49:11,160 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 15:49:11,160 INFO L471 AbstractCegarLoop]: Abstraction has 91 states and 94 transitions. [2024-11-13 15:49:11,160 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.5) internal successors, (10), 5 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:49:11,160 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 94 transitions. [2024-11-13 15:49:11,160 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2024-11-13 15:49:11,160 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 15:49:11,160 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 15:49:11,181 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba1c47ce-3c5d-48a4-a296-5baeabe11678/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2024-11-13 15:49:11,361 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba1c47ce-3c5d-48a4-a296-5baeabe11678/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:49:11,361 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 42 more)] === [2024-11-13 15:49:11,361 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:49:11,362 INFO L85 PathProgramCache]: Analyzing trace with hash 998826193, now seen corresponding path program 1 times [2024-11-13 15:49:11,362 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-13 15:49:11,362 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1804746598] [2024-11-13 15:49:11,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:49:11,362 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:49:11,362 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba1c47ce-3c5d-48a4-a296-5baeabe11678/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:49:11,363 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba1c47ce-3c5d-48a4-a296-5baeabe11678/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 15:49:11,365 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba1c47ce-3c5d-48a4-a296-5baeabe11678/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-13 15:49:11,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:49:11,466 INFO L255 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-13 15:49:11,468 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:49:11,493 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:49:11,493 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 15:49:11,493 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-13 15:49:11,493 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1804746598] [2024-11-13 15:49:11,493 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1804746598] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 15:49:11,493 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 15:49:11,493 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-13 15:49:11,494 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [773757507] [2024-11-13 15:49:11,494 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 15:49:11,494 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-13 15:49:11,494 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-13 15:49:11,494 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-13 15:49:11,494 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-13 15:49:11,495 INFO L87 Difference]: Start difference. First operand 91 states and 94 transitions. Second operand has 4 states, 3 states have (on average 4.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:49:11,795 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 15:49:11,796 INFO L93 Difference]: Finished difference Result 90 states and 93 transitions. [2024-11-13 15:49:11,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-13 15:49:11,796 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2024-11-13 15:49:11,796 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 15:49:11,797 INFO L225 Difference]: With dead ends: 90 [2024-11-13 15:49:11,797 INFO L226 Difference]: Without dead ends: 90 [2024-11-13 15:49:11,797 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-13 15:49:11,802 INFO L432 NwaCegarLoop]: 82 mSDtfsCounter, 3 mSDsluCounter, 86 mSDsCounter, 0 mSdLazyCounter, 88 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 168 SdHoareTripleChecker+Invalid, 88 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 88 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-13 15:49:11,802 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 168 Invalid, 88 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 88 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-13 15:49:11,803 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2024-11-13 15:49:11,805 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 90. [2024-11-13 15:49:11,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 90 states, 55 states have (on average 1.690909090909091) internal successors, (93), 89 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:49:11,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 93 transitions. [2024-11-13 15:49:11,809 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 93 transitions. Word has length 12 [2024-11-13 15:49:11,810 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 15:49:11,810 INFO L471 AbstractCegarLoop]: Abstraction has 90 states and 93 transitions. [2024-11-13 15:49:11,810 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:49:11,810 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 93 transitions. [2024-11-13 15:49:11,810 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2024-11-13 15:49:11,810 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 15:49:11,810 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 15:49:11,828 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba1c47ce-3c5d-48a4-a296-5baeabe11678/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-11-13 15:49:12,011 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba1c47ce-3c5d-48a4-a296-5baeabe11678/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:49:12,011 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 42 more)] === [2024-11-13 15:49:12,011 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:49:12,012 INFO L85 PathProgramCache]: Analyzing trace with hash 998826194, now seen corresponding path program 1 times [2024-11-13 15:49:12,012 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-13 15:49:12,012 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [811293020] [2024-11-13 15:49:12,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:49:12,012 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:49:12,012 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba1c47ce-3c5d-48a4-a296-5baeabe11678/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:49:12,014 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba1c47ce-3c5d-48a4-a296-5baeabe11678/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 15:49:12,015 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba1c47ce-3c5d-48a4-a296-5baeabe11678/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-13 15:49:12,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:49:12,122 INFO L255 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-13 15:49:12,124 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:49:12,208 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:49:12,209 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 15:49:12,209 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-13 15:49:12,209 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [811293020] [2024-11-13 15:49:12,209 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [811293020] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 15:49:12,209 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 15:49:12,209 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-13 15:49:12,209 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1146197936] [2024-11-13 15:49:12,209 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 15:49:12,210 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-13 15:49:12,210 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-13 15:49:12,210 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-13 15:49:12,210 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-13 15:49:12,211 INFO L87 Difference]: Start difference. First operand 90 states and 93 transitions. Second operand has 6 states, 5 states have (on average 2.4) internal successors, (12), 6 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:49:12,560 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 15:49:12,560 INFO L93 Difference]: Finished difference Result 89 states and 92 transitions. [2024-11-13 15:49:12,561 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-13 15:49:12,561 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.4) internal successors, (12), 6 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2024-11-13 15:49:12,561 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 15:49:12,562 INFO L225 Difference]: With dead ends: 89 [2024-11-13 15:49:12,562 INFO L226 Difference]: Without dead ends: 89 [2024-11-13 15:49:12,562 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2024-11-13 15:49:12,563 INFO L432 NwaCegarLoop]: 77 mSDtfsCounter, 19 mSDsluCounter, 183 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 260 SdHoareTripleChecker+Invalid, 56 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-13 15:49:12,563 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 260 Invalid, 56 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 56 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-13 15:49:12,563 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2024-11-13 15:49:12,566 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 89. [2024-11-13 15:49:12,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 89 states, 55 states have (on average 1.6727272727272726) internal successors, (92), 88 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:49:12,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 92 transitions. [2024-11-13 15:49:12,567 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 92 transitions. Word has length 12 [2024-11-13 15:49:12,567 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 15:49:12,567 INFO L471 AbstractCegarLoop]: Abstraction has 89 states and 92 transitions. [2024-11-13 15:49:12,568 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.4) internal successors, (12), 6 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:49:12,568 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 92 transitions. [2024-11-13 15:49:12,568 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2024-11-13 15:49:12,568 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 15:49:12,568 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 15:49:12,589 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba1c47ce-3c5d-48a4-a296-5baeabe11678/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-11-13 15:49:12,772 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba1c47ce-3c5d-48a4-a296-5baeabe11678/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:49:12,773 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 42 more)] === [2024-11-13 15:49:12,773 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:49:12,773 INFO L85 PathProgramCache]: Analyzing trace with hash 898840919, now seen corresponding path program 1 times [2024-11-13 15:49:12,773 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-13 15:49:12,773 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1196622926] [2024-11-13 15:49:12,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:49:12,774 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:49:12,774 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba1c47ce-3c5d-48a4-a296-5baeabe11678/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:49:12,775 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba1c47ce-3c5d-48a4-a296-5baeabe11678/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 15:49:12,776 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba1c47ce-3c5d-48a4-a296-5baeabe11678/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-13 15:49:12,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:49:12,890 INFO L255 TraceCheckSpWp]: Trace formula consists of 113 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-13 15:49:12,891 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:49:12,932 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:49:12,932 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 15:49:12,932 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-13 15:49:12,932 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1196622926] [2024-11-13 15:49:12,932 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1196622926] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 15:49:12,932 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 15:49:12,932 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-13 15:49:12,932 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [170943128] [2024-11-13 15:49:12,932 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 15:49:12,932 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-13 15:49:12,932 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-13 15:49:12,933 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-13 15:49:12,933 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-13 15:49:12,933 INFO L87 Difference]: Start difference. First operand 89 states and 92 transitions. Second operand has 5 states, 4 states have (on average 3.25) internal successors, (13), 5 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:49:13,326 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 15:49:13,327 INFO L93 Difference]: Finished difference Result 87 states and 90 transitions. [2024-11-13 15:49:13,327 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-13 15:49:13,327 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.25) internal successors, (13), 5 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2024-11-13 15:49:13,327 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 15:49:13,328 INFO L225 Difference]: With dead ends: 87 [2024-11-13 15:49:13,328 INFO L226 Difference]: Without dead ends: 87 [2024-11-13 15:49:13,328 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-13 15:49:13,329 INFO L432 NwaCegarLoop]: 73 mSDtfsCounter, 4 mSDsluCounter, 121 mSDsCounter, 0 mSdLazyCounter, 132 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 194 SdHoareTripleChecker+Invalid, 134 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 132 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-13 15:49:13,329 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 194 Invalid, 134 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 132 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-13 15:49:13,330 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2024-11-13 15:49:13,332 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 87. [2024-11-13 15:49:13,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 87 states, 55 states have (on average 1.6363636363636365) internal successors, (90), 86 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:49:13,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 90 transitions. [2024-11-13 15:49:13,333 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 90 transitions. Word has length 13 [2024-11-13 15:49:13,333 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 15:49:13,333 INFO L471 AbstractCegarLoop]: Abstraction has 87 states and 90 transitions. [2024-11-13 15:49:13,333 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.25) internal successors, (13), 5 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:49:13,333 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 90 transitions. [2024-11-13 15:49:13,334 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2024-11-13 15:49:13,334 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 15:49:13,334 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 15:49:13,354 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba1c47ce-3c5d-48a4-a296-5baeabe11678/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-11-13 15:49:13,534 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba1c47ce-3c5d-48a4-a296-5baeabe11678/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:49:13,535 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 42 more)] === [2024-11-13 15:49:13,535 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:49:13,535 INFO L85 PathProgramCache]: Analyzing trace with hash 898840920, now seen corresponding path program 1 times [2024-11-13 15:49:13,535 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-13 15:49:13,535 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [431367165] [2024-11-13 15:49:13,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:49:13,535 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:49:13,536 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba1c47ce-3c5d-48a4-a296-5baeabe11678/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:49:13,537 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba1c47ce-3c5d-48a4-a296-5baeabe11678/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 15:49:13,539 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba1c47ce-3c5d-48a4-a296-5baeabe11678/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-11-13 15:49:13,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:49:13,664 INFO L255 TraceCheckSpWp]: Trace formula consists of 113 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-13 15:49:13,666 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:49:13,675 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2024-11-13 15:49:13,768 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:49:13,768 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 15:49:13,768 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-13 15:49:13,768 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [431367165] [2024-11-13 15:49:13,768 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [431367165] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 15:49:13,768 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 15:49:13,768 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-13 15:49:13,769 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [24106345] [2024-11-13 15:49:13,769 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 15:49:13,769 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-13 15:49:13,769 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-13 15:49:13,769 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-13 15:49:13,769 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-13 15:49:13,770 INFO L87 Difference]: Start difference. First operand 87 states and 90 transitions. Second operand has 5 states, 4 states have (on average 3.25) internal successors, (13), 5 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:49:14,164 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 15:49:14,164 INFO L93 Difference]: Finished difference Result 85 states and 88 transitions. [2024-11-13 15:49:14,165 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-13 15:49:14,165 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.25) internal successors, (13), 5 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2024-11-13 15:49:14,165 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 15:49:14,165 INFO L225 Difference]: With dead ends: 85 [2024-11-13 15:49:14,165 INFO L226 Difference]: Without dead ends: 85 [2024-11-13 15:49:14,166 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-13 15:49:14,166 INFO L432 NwaCegarLoop]: 73 mSDtfsCounter, 4 mSDsluCounter, 136 mSDsCounter, 0 mSdLazyCounter, 109 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 209 SdHoareTripleChecker+Invalid, 110 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 109 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-13 15:49:14,166 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 209 Invalid, 110 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 109 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-13 15:49:14,167 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2024-11-13 15:49:14,168 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 85. [2024-11-13 15:49:14,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 85 states, 55 states have (on average 1.6) internal successors, (88), 84 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:49:14,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 88 transitions. [2024-11-13 15:49:14,169 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 88 transitions. Word has length 13 [2024-11-13 15:49:14,169 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 15:49:14,169 INFO L471 AbstractCegarLoop]: Abstraction has 85 states and 88 transitions. [2024-11-13 15:49:14,169 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.25) internal successors, (13), 5 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:49:14,169 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 88 transitions. [2024-11-13 15:49:14,169 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2024-11-13 15:49:14,169 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 15:49:14,169 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 15:49:14,191 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba1c47ce-3c5d-48a4-a296-5baeabe11678/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2024-11-13 15:49:14,370 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba1c47ce-3c5d-48a4-a296-5baeabe11678/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:49:14,370 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr20REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 42 more)] === [2024-11-13 15:49:14,370 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:49:14,370 INFO L85 PathProgramCache]: Analyzing trace with hash 1865582068, now seen corresponding path program 1 times [2024-11-13 15:49:14,371 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-13 15:49:14,371 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1737935625] [2024-11-13 15:49:14,371 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:49:14,371 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:49:14,371 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba1c47ce-3c5d-48a4-a296-5baeabe11678/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:49:14,372 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba1c47ce-3c5d-48a4-a296-5baeabe11678/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 15:49:14,373 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba1c47ce-3c5d-48a4-a296-5baeabe11678/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-11-13 15:49:14,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:49:14,462 INFO L255 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-13 15:49:14,463 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:49:14,521 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:49:14,522 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 15:49:14,522 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-13 15:49:14,522 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1737935625] [2024-11-13 15:49:14,522 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1737935625] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 15:49:14,522 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 15:49:14,522 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-13 15:49:14,522 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [581024282] [2024-11-13 15:49:14,522 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 15:49:14,522 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-13 15:49:14,523 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-13 15:49:14,523 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-13 15:49:14,523 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-13 15:49:14,523 INFO L87 Difference]: Start difference. First operand 85 states and 88 transitions. Second operand has 6 states, 5 states have (on average 2.8) internal successors, (14), 6 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:49:15,092 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 15:49:15,092 INFO L93 Difference]: Finished difference Result 116 states and 121 transitions. [2024-11-13 15:49:15,093 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-13 15:49:15,093 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.8) internal successors, (14), 6 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2024-11-13 15:49:15,093 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 15:49:15,094 INFO L225 Difference]: With dead ends: 116 [2024-11-13 15:49:15,094 INFO L226 Difference]: Without dead ends: 116 [2024-11-13 15:49:15,094 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-13 15:49:15,095 INFO L432 NwaCegarLoop]: 41 mSDtfsCounter, 56 mSDsluCounter, 122 mSDsCounter, 0 mSdLazyCounter, 204 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56 SdHoareTripleChecker+Valid, 163 SdHoareTripleChecker+Invalid, 207 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 204 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-13 15:49:15,095 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [56 Valid, 163 Invalid, 207 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 204 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-13 15:49:15,096 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2024-11-13 15:49:15,097 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 88. [2024-11-13 15:49:15,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 88 states, 59 states have (on average 1.5932203389830508) internal successors, (94), 87 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:49:15,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 94 transitions. [2024-11-13 15:49:15,098 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 94 transitions. Word has length 14 [2024-11-13 15:49:15,098 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 15:49:15,098 INFO L471 AbstractCegarLoop]: Abstraction has 88 states and 94 transitions. [2024-11-13 15:49:15,098 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.8) internal successors, (14), 6 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:49:15,099 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 94 transitions. [2024-11-13 15:49:15,099 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2024-11-13 15:49:15,099 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 15:49:15,099 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 15:49:15,116 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba1c47ce-3c5d-48a4-a296-5baeabe11678/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2024-11-13 15:49:15,300 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba1c47ce-3c5d-48a4-a296-5baeabe11678/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:49:15,300 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr21REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 42 more)] === [2024-11-13 15:49:15,300 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:49:15,300 INFO L85 PathProgramCache]: Analyzing trace with hash 1865582069, now seen corresponding path program 1 times [2024-11-13 15:49:15,300 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-13 15:49:15,300 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1031834110] [2024-11-13 15:49:15,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:49:15,300 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:49:15,301 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba1c47ce-3c5d-48a4-a296-5baeabe11678/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:49:15,302 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba1c47ce-3c5d-48a4-a296-5baeabe11678/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 15:49:15,303 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba1c47ce-3c5d-48a4-a296-5baeabe11678/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-11-13 15:49:15,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:49:15,393 INFO L255 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-13 15:49:15,395 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:49:15,405 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2024-11-13 15:49:15,542 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:49:15,542 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 15:49:15,542 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-13 15:49:15,542 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1031834110] [2024-11-13 15:49:15,542 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1031834110] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 15:49:15,542 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 15:49:15,542 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-13 15:49:15,542 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1490747238] [2024-11-13 15:49:15,543 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 15:49:15,543 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-13 15:49:15,543 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-13 15:49:15,543 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-13 15:49:15,543 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-13 15:49:15,544 INFO L87 Difference]: Start difference. First operand 88 states and 94 transitions. Second operand has 6 states, 5 states have (on average 2.8) internal successors, (14), 6 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:49:16,209 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 15:49:16,209 INFO L93 Difference]: Finished difference Result 137 states and 146 transitions. [2024-11-13 15:49:16,209 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-13 15:49:16,209 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.8) internal successors, (14), 6 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2024-11-13 15:49:16,210 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 15:49:16,210 INFO L225 Difference]: With dead ends: 137 [2024-11-13 15:49:16,210 INFO L226 Difference]: Without dead ends: 137 [2024-11-13 15:49:16,210 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-13 15:49:16,211 INFO L432 NwaCegarLoop]: 52 mSDtfsCounter, 45 mSDsluCounter, 160 mSDsCounter, 0 mSdLazyCounter, 189 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 212 SdHoareTripleChecker+Invalid, 190 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 189 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-13 15:49:16,211 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [45 Valid, 212 Invalid, 190 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 189 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-13 15:49:16,212 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137 states. [2024-11-13 15:49:16,214 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 137 to 116. [2024-11-13 15:49:16,214 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 116 states, 87 states have (on average 1.6781609195402298) internal successors, (146), 115 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:49:16,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 146 transitions. [2024-11-13 15:49:16,215 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 146 transitions. Word has length 14 [2024-11-13 15:49:16,215 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 15:49:16,215 INFO L471 AbstractCegarLoop]: Abstraction has 116 states and 146 transitions. [2024-11-13 15:49:16,215 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.8) internal successors, (14), 6 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:49:16,215 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 146 transitions. [2024-11-13 15:49:16,216 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2024-11-13 15:49:16,216 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 15:49:16,216 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 15:49:16,234 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba1c47ce-3c5d-48a4-a296-5baeabe11678/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2024-11-13 15:49:16,416 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba1c47ce-3c5d-48a4-a296-5baeabe11678/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:49:16,416 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr18REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 42 more)] === [2024-11-13 15:49:16,417 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:49:16,417 INFO L85 PathProgramCache]: Analyzing trace with hash 1865583734, now seen corresponding path program 1 times [2024-11-13 15:49:16,417 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-13 15:49:16,417 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [664925877] [2024-11-13 15:49:16,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:49:16,417 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:49:16,417 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba1c47ce-3c5d-48a4-a296-5baeabe11678/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:49:16,419 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba1c47ce-3c5d-48a4-a296-5baeabe11678/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 15:49:16,420 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba1c47ce-3c5d-48a4-a296-5baeabe11678/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-11-13 15:49:16,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:49:16,508 INFO L255 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 17 conjuncts are in the unsatisfiable core [2024-11-13 15:49:16,512 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:49:16,524 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-13 15:49:16,548 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 27 treesize of output 11 [2024-11-13 15:49:16,641 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 [2024-11-13 15:49:16,680 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:49:16,680 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 15:49:16,681 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-13 15:49:16,681 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [664925877] [2024-11-13 15:49:16,681 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [664925877] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 15:49:16,681 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 15:49:16,681 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-13 15:49:16,681 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [975716595] [2024-11-13 15:49:16,681 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 15:49:16,681 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-13 15:49:16,682 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-13 15:49:16,682 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-13 15:49:16,682 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-13 15:49:16,682 INFO L87 Difference]: Start difference. First operand 116 states and 146 transitions. Second operand has 7 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 7 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:49:17,462 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 15:49:17,462 INFO L93 Difference]: Finished difference Result 122 states and 152 transitions. [2024-11-13 15:49:17,463 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-13 15:49:17,463 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 7 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2024-11-13 15:49:17,463 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 15:49:17,463 INFO L225 Difference]: With dead ends: 122 [2024-11-13 15:49:17,464 INFO L226 Difference]: Without dead ends: 122 [2024-11-13 15:49:17,464 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-11-13 15:49:17,464 INFO L432 NwaCegarLoop]: 69 mSDtfsCounter, 12 mSDsluCounter, 185 mSDsCounter, 0 mSdLazyCounter, 229 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 254 SdHoareTripleChecker+Invalid, 230 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 229 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-13 15:49:17,464 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 254 Invalid, 230 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 229 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-13 15:49:17,465 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states. [2024-11-13 15:49:17,467 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 119. [2024-11-13 15:49:17,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 119 states, 90 states have (on average 1.6777777777777778) internal successors, (151), 118 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:49:17,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 151 transitions. [2024-11-13 15:49:17,468 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 151 transitions. Word has length 14 [2024-11-13 15:49:17,468 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 15:49:17,468 INFO L471 AbstractCegarLoop]: Abstraction has 119 states and 151 transitions. [2024-11-13 15:49:17,468 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 7 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:49:17,468 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 151 transitions. [2024-11-13 15:49:17,469 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2024-11-13 15:49:17,469 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 15:49:17,469 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 15:49:17,486 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba1c47ce-3c5d-48a4-a296-5baeabe11678/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2024-11-13 15:49:17,669 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba1c47ce-3c5d-48a4-a296-5baeabe11678/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:49:17,669 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr19REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 42 more)] === [2024-11-13 15:49:17,670 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:49:17,670 INFO L85 PathProgramCache]: Analyzing trace with hash 1865583735, now seen corresponding path program 1 times [2024-11-13 15:49:17,670 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-13 15:49:17,670 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [478514629] [2024-11-13 15:49:17,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:49:17,670 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:49:17,670 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba1c47ce-3c5d-48a4-a296-5baeabe11678/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:49:17,672 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba1c47ce-3c5d-48a4-a296-5baeabe11678/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 15:49:17,673 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba1c47ce-3c5d-48a4-a296-5baeabe11678/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2024-11-13 15:49:17,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:49:17,765 INFO L255 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 23 conjuncts are in the unsatisfiable core [2024-11-13 15:49:17,767 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:49:17,781 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-13 15:49:17,790 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-13 15:49:17,820 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 [2024-11-13 15:49:17,834 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 [2024-11-13 15:49:18,035 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 [2024-11-13 15:49:18,045 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2024-11-13 15:49:18,124 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:49:18,124 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 15:49:18,124 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-13 15:49:18,124 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [478514629] [2024-11-13 15:49:18,124 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [478514629] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 15:49:18,124 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 15:49:18,124 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-13 15:49:18,125 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1337588382] [2024-11-13 15:49:18,125 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 15:49:18,125 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-13 15:49:18,125 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-13 15:49:18,125 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-13 15:49:18,125 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-11-13 15:49:18,126 INFO L87 Difference]: Start difference. First operand 119 states and 151 transitions. Second operand has 9 states, 9 states have (on average 1.5555555555555556) internal successors, (14), 9 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:49:18,903 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 15:49:18,903 INFO L93 Difference]: Finished difference Result 114 states and 141 transitions. [2024-11-13 15:49:18,903 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-13 15:49:18,904 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 1.5555555555555556) internal successors, (14), 9 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2024-11-13 15:49:18,904 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 15:49:18,904 INFO L225 Difference]: With dead ends: 114 [2024-11-13 15:49:18,904 INFO L226 Difference]: Without dead ends: 114 [2024-11-13 15:49:18,905 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-11-13 15:49:18,905 INFO L432 NwaCegarLoop]: 72 mSDtfsCounter, 20 mSDsluCounter, 318 mSDsCounter, 0 mSdLazyCounter, 110 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 390 SdHoareTripleChecker+Invalid, 110 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 110 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-13 15:49:18,905 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 390 Invalid, 110 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 110 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-13 15:49:18,906 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114 states. [2024-11-13 15:49:18,908 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114 to 113. [2024-11-13 15:49:18,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 113 states, 84 states have (on average 1.6666666666666667) internal successors, (140), 112 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:49:18,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 140 transitions. [2024-11-13 15:49:18,909 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 140 transitions. Word has length 14 [2024-11-13 15:49:18,909 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 15:49:18,909 INFO L471 AbstractCegarLoop]: Abstraction has 113 states and 140 transitions. [2024-11-13 15:49:18,909 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 1.5555555555555556) internal successors, (14), 9 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:49:18,909 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 140 transitions. [2024-11-13 15:49:18,910 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2024-11-13 15:49:18,910 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 15:49:18,911 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 15:49:18,931 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba1c47ce-3c5d-48a4-a296-5baeabe11678/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2024-11-13 15:49:19,111 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba1c47ce-3c5d-48a4-a296-5baeabe11678/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:49:19,111 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr14REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 42 more)] === [2024-11-13 15:49:19,112 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:49:19,112 INFO L85 PathProgramCache]: Analyzing trace with hash 497697018, now seen corresponding path program 1 times [2024-11-13 15:49:19,112 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-13 15:49:19,112 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [131889712] [2024-11-13 15:49:19,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:49:19,112 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:49:19,112 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba1c47ce-3c5d-48a4-a296-5baeabe11678/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:49:19,114 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba1c47ce-3c5d-48a4-a296-5baeabe11678/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 15:49:19,115 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba1c47ce-3c5d-48a4-a296-5baeabe11678/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2024-11-13 15:49:19,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:49:19,240 INFO L255 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-11-13 15:49:19,243 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:49:19,281 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-13 15:49:19,360 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2024-11-13 15:49:19,361 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2024-11-13 15:49:19,401 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 [2024-11-13 15:49:19,467 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 [2024-11-13 15:49:19,522 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:49:19,522 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 15:49:19,522 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-13 15:49:19,522 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [131889712] [2024-11-13 15:49:19,522 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [131889712] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 15:49:19,522 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 15:49:19,522 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-13 15:49:19,522 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [145977106] [2024-11-13 15:49:19,522 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 15:49:19,523 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-13 15:49:19,523 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-13 15:49:19,523 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-13 15:49:19,523 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-11-13 15:49:19,523 INFO L87 Difference]: Start difference. First operand 113 states and 140 transitions. Second operand has 10 states, 9 states have (on average 1.6666666666666667) internal successors, (15), 10 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:49:20,242 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 15:49:20,242 INFO L93 Difference]: Finished difference Result 121 states and 149 transitions. [2024-11-13 15:49:20,243 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-13 15:49:20,243 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 1.6666666666666667) internal successors, (15), 10 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2024-11-13 15:49:20,243 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 15:49:20,244 INFO L225 Difference]: With dead ends: 121 [2024-11-13 15:49:20,244 INFO L226 Difference]: Without dead ends: 121 [2024-11-13 15:49:20,244 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=60, Invalid=150, Unknown=0, NotChecked=0, Total=210 [2024-11-13 15:49:20,245 INFO L432 NwaCegarLoop]: 67 mSDtfsCounter, 48 mSDsluCounter, 205 mSDsCounter, 0 mSdLazyCounter, 155 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 48 SdHoareTripleChecker+Valid, 272 SdHoareTripleChecker+Invalid, 160 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 155 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-13 15:49:20,245 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [48 Valid, 272 Invalid, 160 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 155 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-13 15:49:20,245 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121 states. [2024-11-13 15:49:20,247 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121 to 121. [2024-11-13 15:49:20,248 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 121 states, 92 states have (on average 1.6195652173913044) internal successors, (149), 120 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:49:20,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 149 transitions. [2024-11-13 15:49:20,248 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 149 transitions. Word has length 15 [2024-11-13 15:49:20,249 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 15:49:20,249 INFO L471 AbstractCegarLoop]: Abstraction has 121 states and 149 transitions. [2024-11-13 15:49:20,249 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 1.6666666666666667) internal successors, (15), 10 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:49:20,249 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 149 transitions. [2024-11-13 15:49:20,249 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2024-11-13 15:49:20,249 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 15:49:20,250 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 15:49:20,270 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba1c47ce-3c5d-48a4-a296-5baeabe11678/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2024-11-13 15:49:20,453 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba1c47ce-3c5d-48a4-a296-5baeabe11678/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:49:20,454 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr15REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 42 more)] === [2024-11-13 15:49:20,454 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:49:20,454 INFO L85 PathProgramCache]: Analyzing trace with hash 497697019, now seen corresponding path program 1 times [2024-11-13 15:49:20,454 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-13 15:49:20,454 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [575576668] [2024-11-13 15:49:20,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:49:20,455 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:49:20,455 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba1c47ce-3c5d-48a4-a296-5baeabe11678/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:49:20,457 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba1c47ce-3c5d-48a4-a296-5baeabe11678/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 15:49:20,459 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba1c47ce-3c5d-48a4-a296-5baeabe11678/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2024-11-13 15:49:20,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:49:20,587 INFO L255 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 26 conjuncts are in the unsatisfiable core [2024-11-13 15:49:20,590 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:49:20,597 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2024-11-13 15:49:20,648 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-13 15:49:20,661 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-13 15:49:20,773 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2024-11-13 15:49:20,774 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2024-11-13 15:49:20,792 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 9 [2024-11-13 15:49:20,864 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 [2024-11-13 15:49:20,872 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 [2024-11-13 15:49:20,990 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 [2024-11-13 15:49:21,000 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 [2024-11-13 15:49:21,082 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:49:21,082 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 15:49:21,082 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-13 15:49:21,082 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [575576668] [2024-11-13 15:49:21,082 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [575576668] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 15:49:21,082 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 15:49:21,082 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-13 15:49:21,084 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2044284455] [2024-11-13 15:49:21,084 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 15:49:21,085 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-13 15:49:21,085 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-13 15:49:21,085 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-13 15:49:21,085 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-11-13 15:49:21,085 INFO L87 Difference]: Start difference. First operand 121 states and 149 transitions. Second operand has 10 states, 9 states have (on average 1.6666666666666667) internal successors, (15), 10 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:49:22,063 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 15:49:22,064 INFO L93 Difference]: Finished difference Result 121 states and 148 transitions. [2024-11-13 15:49:22,064 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-13 15:49:22,064 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 1.6666666666666667) internal successors, (15), 10 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2024-11-13 15:49:22,065 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 15:49:22,065 INFO L225 Difference]: With dead ends: 121 [2024-11-13 15:49:22,065 INFO L226 Difference]: Without dead ends: 121 [2024-11-13 15:49:22,065 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=60, Invalid=150, Unknown=0, NotChecked=0, Total=210 [2024-11-13 15:49:22,066 INFO L432 NwaCegarLoop]: 67 mSDtfsCounter, 45 mSDsluCounter, 218 mSDsCounter, 0 mSdLazyCounter, 216 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 285 SdHoareTripleChecker+Invalid, 222 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 216 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-13 15:49:22,066 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [45 Valid, 285 Invalid, 222 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 216 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-13 15:49:22,067 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121 states. [2024-11-13 15:49:22,069 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121 to 121. [2024-11-13 15:49:22,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 121 states, 92 states have (on average 1.608695652173913) internal successors, (148), 120 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:49:22,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 148 transitions. [2024-11-13 15:49:22,070 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 148 transitions. Word has length 15 [2024-11-13 15:49:22,070 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 15:49:22,070 INFO L471 AbstractCegarLoop]: Abstraction has 121 states and 148 transitions. [2024-11-13 15:49:22,070 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 1.6666666666666667) internal successors, (15), 10 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:49:22,070 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 148 transitions. [2024-11-13 15:49:22,071 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2024-11-13 15:49:22,071 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 15:49:22,071 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 15:49:22,092 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba1c47ce-3c5d-48a4-a296-5baeabe11678/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2024-11-13 15:49:22,271 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba1c47ce-3c5d-48a4-a296-5baeabe11678/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:49:22,272 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr22REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 42 more)] === [2024-11-13 15:49:22,272 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:49:22,272 INFO L85 PathProgramCache]: Analyzing trace with hash 1823006581, now seen corresponding path program 1 times [2024-11-13 15:49:22,272 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-13 15:49:22,272 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2007097281] [2024-11-13 15:49:22,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:49:22,273 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:49:22,273 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba1c47ce-3c5d-48a4-a296-5baeabe11678/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:49:22,275 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba1c47ce-3c5d-48a4-a296-5baeabe11678/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 15:49:22,276 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba1c47ce-3c5d-48a4-a296-5baeabe11678/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2024-11-13 15:49:22,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:49:22,384 INFO L255 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-11-13 15:49:22,387 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:49:22,400 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 [2024-11-13 15:49:22,618 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 [2024-11-13 15:49:22,677 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:49:22,677 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 15:49:22,677 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-13 15:49:22,677 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2007097281] [2024-11-13 15:49:22,677 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2007097281] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 15:49:22,677 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 15:49:22,677 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-13 15:49:22,677 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1995248792] [2024-11-13 15:49:22,678 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 15:49:22,678 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-13 15:49:22,678 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-13 15:49:22,678 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-13 15:49:22,678 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2024-11-13 15:49:22,679 INFO L87 Difference]: Start difference. First operand 121 states and 148 transitions. Second operand has 11 states, 10 states have (on average 1.6) internal successors, (16), 11 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:49:24,247 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 15:49:24,248 INFO L93 Difference]: Finished difference Result 179 states and 226 transitions. [2024-11-13 15:49:24,248 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-13 15:49:24,248 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 1.6) internal successors, (16), 11 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2024-11-13 15:49:24,248 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 15:49:24,250 INFO L225 Difference]: With dead ends: 179 [2024-11-13 15:49:24,250 INFO L226 Difference]: Without dead ends: 179 [2024-11-13 15:49:24,250 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=35, Invalid=175, Unknown=0, NotChecked=0, Total=210 [2024-11-13 15:49:24,251 INFO L432 NwaCegarLoop]: 35 mSDtfsCounter, 82 mSDsluCounter, 223 mSDsCounter, 0 mSdLazyCounter, 530 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 82 SdHoareTripleChecker+Valid, 258 SdHoareTripleChecker+Invalid, 534 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 530 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2024-11-13 15:49:24,251 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [82 Valid, 258 Invalid, 534 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 530 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2024-11-13 15:49:24,251 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 179 states. [2024-11-13 15:49:24,257 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 179 to 150. [2024-11-13 15:49:24,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 150 states, 121 states have (on average 1.7107438016528926) internal successors, (207), 149 states have internal predecessors, (207), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:49:24,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 150 states and 207 transitions. [2024-11-13 15:49:24,260 INFO L78 Accepts]: Start accepts. Automaton has 150 states and 207 transitions. Word has length 16 [2024-11-13 15:49:24,260 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 15:49:24,260 INFO L471 AbstractCegarLoop]: Abstraction has 150 states and 207 transitions. [2024-11-13 15:49:24,260 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 1.6) internal successors, (16), 11 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:49:24,260 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states and 207 transitions. [2024-11-13 15:49:24,262 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2024-11-13 15:49:24,262 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 15:49:24,262 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 15:49:24,276 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba1c47ce-3c5d-48a4-a296-5baeabe11678/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2024-11-13 15:49:24,462 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba1c47ce-3c5d-48a4-a296-5baeabe11678/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:49:24,463 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr23REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 42 more)] === [2024-11-13 15:49:24,463 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:49:24,463 INFO L85 PathProgramCache]: Analyzing trace with hash 1823006582, now seen corresponding path program 1 times [2024-11-13 15:49:24,463 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-13 15:49:24,463 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [310627995] [2024-11-13 15:49:24,463 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:49:24,463 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:49:24,463 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba1c47ce-3c5d-48a4-a296-5baeabe11678/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:49:24,465 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba1c47ce-3c5d-48a4-a296-5baeabe11678/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 15:49:24,466 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba1c47ce-3c5d-48a4-a296-5baeabe11678/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2024-11-13 15:49:24,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:49:24,571 INFO L255 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 28 conjuncts are in the unsatisfiable core [2024-11-13 15:49:24,573 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:49:24,579 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2024-11-13 15:49:24,606 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 [2024-11-13 15:49:24,613 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 [2024-11-13 15:49:24,962 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 [2024-11-13 15:49:24,970 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 [2024-11-13 15:49:25,046 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:49:25,046 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 15:49:25,046 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-13 15:49:25,046 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [310627995] [2024-11-13 15:49:25,046 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [310627995] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 15:49:25,046 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 15:49:25,047 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-13 15:49:25,047 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1091303708] [2024-11-13 15:49:25,047 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 15:49:25,047 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-13 15:49:25,047 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-13 15:49:25,048 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-13 15:49:25,048 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2024-11-13 15:49:25,048 INFO L87 Difference]: Start difference. First operand 150 states and 207 transitions. Second operand has 11 states, 10 states have (on average 1.6) internal successors, (16), 11 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:49:26,484 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 15:49:26,485 INFO L93 Difference]: Finished difference Result 144 states and 168 transitions. [2024-11-13 15:49:26,485 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-13 15:49:26,485 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 1.6) internal successors, (16), 11 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2024-11-13 15:49:26,485 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 15:49:26,486 INFO L225 Difference]: With dead ends: 144 [2024-11-13 15:49:26,486 INFO L226 Difference]: Without dead ends: 144 [2024-11-13 15:49:26,486 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2024-11-13 15:49:26,487 INFO L432 NwaCegarLoop]: 53 mSDtfsCounter, 39 mSDsluCounter, 323 mSDsCounter, 0 mSdLazyCounter, 430 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 376 SdHoareTripleChecker+Invalid, 431 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 430 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2024-11-13 15:49:26,487 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [39 Valid, 376 Invalid, 431 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 430 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2024-11-13 15:49:26,488 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2024-11-13 15:49:26,490 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 132. [2024-11-13 15:49:26,490 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 132 states, 103 states have (on average 1.6310679611650485) internal successors, (168), 131 states have internal predecessors, (168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:49:26,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132 states to 132 states and 168 transitions. [2024-11-13 15:49:26,491 INFO L78 Accepts]: Start accepts. Automaton has 132 states and 168 transitions. Word has length 16 [2024-11-13 15:49:26,491 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 15:49:26,491 INFO L471 AbstractCegarLoop]: Abstraction has 132 states and 168 transitions. [2024-11-13 15:49:26,492 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 1.6) internal successors, (16), 11 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:49:26,492 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states and 168 transitions. [2024-11-13 15:49:26,492 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2024-11-13 15:49:26,492 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 15:49:26,492 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 15:49:26,512 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba1c47ce-3c5d-48a4-a296-5baeabe11678/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Ended with exit code 0 [2024-11-13 15:49:26,693 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba1c47ce-3c5d-48a4-a296-5baeabe11678/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:49:26,693 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr24REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 42 more)] === [2024-11-13 15:49:26,693 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:49:26,693 INFO L85 PathProgramCache]: Analyzing trace with hash -672347484, now seen corresponding path program 1 times [2024-11-13 15:49:26,693 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-13 15:49:26,693 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1934093815] [2024-11-13 15:49:26,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:49:26,694 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:49:26,694 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba1c47ce-3c5d-48a4-a296-5baeabe11678/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:49:26,695 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba1c47ce-3c5d-48a4-a296-5baeabe11678/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 15:49:26,696 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba1c47ce-3c5d-48a4-a296-5baeabe11678/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2024-11-13 15:49:26,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:49:26,803 INFO L255 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-13 15:49:26,804 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:49:26,827 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:49:26,827 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 15:49:26,827 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-13 15:49:26,827 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1934093815] [2024-11-13 15:49:26,827 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1934093815] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 15:49:26,827 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 15:49:26,827 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-13 15:49:26,827 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1234020203] [2024-11-13 15:49:26,827 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 15:49:26,828 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-13 15:49:26,828 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-13 15:49:26,828 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-13 15:49:26,828 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-13 15:49:26,828 INFO L87 Difference]: Start difference. First operand 132 states and 168 transitions. Second operand has 4 states, 3 states have (on average 6.333333333333333) internal successors, (19), 4 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:49:27,167 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 15:49:27,167 INFO L93 Difference]: Finished difference Result 138 states and 157 transitions. [2024-11-13 15:49:27,168 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-13 15:49:27,168 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), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2024-11-13 15:49:27,168 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 15:49:27,169 INFO L225 Difference]: With dead ends: 138 [2024-11-13 15:49:27,169 INFO L226 Difference]: Without dead ends: 138 [2024-11-13 15:49:27,169 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-13 15:49:27,169 INFO L432 NwaCegarLoop]: 61 mSDtfsCounter, 42 mSDsluCounter, 63 mSDsCounter, 0 mSdLazyCounter, 97 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 124 SdHoareTripleChecker+Invalid, 104 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 97 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-13 15:49:27,169 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [42 Valid, 124 Invalid, 104 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 97 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-13 15:49:27,170 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138 states. [2024-11-13 15:49:27,172 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138 to 129. [2024-11-13 15:49:27,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 129 states, 103 states have (on average 1.5242718446601942) internal successors, (157), 128 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:49:27,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 157 transitions. [2024-11-13 15:49:27,173 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 157 transitions. Word has length 19 [2024-11-13 15:49:27,174 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 15:49:27,174 INFO L471 AbstractCegarLoop]: Abstraction has 129 states and 157 transitions. [2024-11-13 15:49:27,174 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), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:49:27,174 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 157 transitions. [2024-11-13 15:49:27,174 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2024-11-13 15:49:27,174 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 15:49:27,174 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 15:49:27,192 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba1c47ce-3c5d-48a4-a296-5baeabe11678/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2024-11-13 15:49:27,374 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba1c47ce-3c5d-48a4-a296-5baeabe11678/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:49:27,375 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr25REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 42 more)] === [2024-11-13 15:49:27,375 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:49:27,375 INFO L85 PathProgramCache]: Analyzing trace with hash -672347483, now seen corresponding path program 1 times [2024-11-13 15:49:27,375 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-13 15:49:27,375 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [189613668] [2024-11-13 15:49:27,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:49:27,376 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:49:27,376 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba1c47ce-3c5d-48a4-a296-5baeabe11678/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:49:27,377 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba1c47ce-3c5d-48a4-a296-5baeabe11678/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 15:49:27,378 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba1c47ce-3c5d-48a4-a296-5baeabe11678/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2024-11-13 15:49:27,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:49:27,506 INFO L255 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 26 conjuncts are in the unsatisfiable core [2024-11-13 15:49:27,508 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:49:27,528 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 [2024-11-13 15:49:27,533 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 [2024-11-13 15:49:27,795 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 [2024-11-13 15:49:27,802 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 [2024-11-13 15:49:27,890 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:49:27,890 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 15:49:27,890 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-13 15:49:27,890 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [189613668] [2024-11-13 15:49:27,890 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [189613668] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 15:49:27,890 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 15:49:27,890 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-11-13 15:49:27,890 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [524314443] [2024-11-13 15:49:27,890 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 15:49:27,891 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-13 15:49:27,891 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-13 15:49:27,891 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-13 15:49:27,891 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2024-11-13 15:49:27,891 INFO L87 Difference]: Start difference. First operand 129 states and 157 transitions. Second operand has 11 states, 11 states have (on average 1.7272727272727273) internal successors, (19), 11 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:49:28,687 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 15:49:28,687 INFO L93 Difference]: Finished difference Result 125 states and 145 transitions. [2024-11-13 15:49:28,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-13 15:49:28,688 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 1.7272727272727273) internal successors, (19), 11 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2024-11-13 15:49:28,688 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 15:49:28,688 INFO L225 Difference]: With dead ends: 125 [2024-11-13 15:49:28,688 INFO L226 Difference]: Without dead ends: 125 [2024-11-13 15:49:28,689 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2024-11-13 15:49:28,690 INFO L432 NwaCegarLoop]: 57 mSDtfsCounter, 30 mSDsluCounter, 410 mSDsCounter, 0 mSdLazyCounter, 282 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 467 SdHoareTripleChecker+Invalid, 283 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 282 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-13 15:49:28,691 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 467 Invalid, 283 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 282 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-13 15:49:28,691 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125 states. [2024-11-13 15:49:28,693 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125 to 119. [2024-11-13 15:49:28,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 119 states, 93 states have (on average 1.4838709677419355) internal successors, (138), 118 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:49:28,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 138 transitions. [2024-11-13 15:49:28,694 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 138 transitions. Word has length 19 [2024-11-13 15:49:28,694 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 15:49:28,694 INFO L471 AbstractCegarLoop]: Abstraction has 119 states and 138 transitions. [2024-11-13 15:49:28,695 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 1.7272727272727273) internal successors, (19), 11 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:49:28,695 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 138 transitions. [2024-11-13 15:49:28,695 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2024-11-13 15:49:28,695 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 15:49:28,695 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 15:49:28,715 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba1c47ce-3c5d-48a4-a296-5baeabe11678/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Ended with exit code 0 [2024-11-13 15:49:28,895 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba1c47ce-3c5d-48a4-a296-5baeabe11678/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:49:28,895 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr42ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 42 more)] === [2024-11-13 15:49:28,896 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:49:28,896 INFO L85 PathProgramCache]: Analyzing trace with hash 632063803, now seen corresponding path program 1 times [2024-11-13 15:49:28,896 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-13 15:49:28,896 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1027178282] [2024-11-13 15:49:28,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:49:28,896 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:49:28,896 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba1c47ce-3c5d-48a4-a296-5baeabe11678/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:49:28,899 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba1c47ce-3c5d-48a4-a296-5baeabe11678/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 15:49:28,900 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba1c47ce-3c5d-48a4-a296-5baeabe11678/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2024-11-13 15:49:29,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:49:29,027 INFO L255 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-13 15:49:29,027 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:49:29,137 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:49:29,138 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 15:49:29,138 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-13 15:49:29,138 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1027178282] [2024-11-13 15:49:29,138 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1027178282] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 15:49:29,138 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 15:49:29,138 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-13 15:49:29,138 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1716547479] [2024-11-13 15:49:29,138 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 15:49:29,138 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-13 15:49:29,138 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-13 15:49:29,139 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-13 15:49:29,139 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-13 15:49:29,139 INFO L87 Difference]: Start difference. First operand 119 states and 138 transitions. Second operand has 6 states, 5 states have (on average 4.0) internal successors, (20), 6 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:49:29,311 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 15:49:29,312 INFO L93 Difference]: Finished difference Result 118 states and 136 transitions. [2024-11-13 15:49:29,312 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-13 15:49:29,312 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 4.0) internal successors, (20), 6 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2024-11-13 15:49:29,312 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 15:49:29,313 INFO L225 Difference]: With dead ends: 118 [2024-11-13 15:49:29,313 INFO L226 Difference]: Without dead ends: 118 [2024-11-13 15:49:29,313 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-13 15:49:29,314 INFO L432 NwaCegarLoop]: 61 mSDtfsCounter, 53 mSDsluCounter, 178 mSDsCounter, 0 mSdLazyCounter, 75 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 53 SdHoareTripleChecker+Valid, 239 SdHoareTripleChecker+Invalid, 75 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 75 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-13 15:49:29,314 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [53 Valid, 239 Invalid, 75 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 75 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-13 15:49:29,314 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118 states. [2024-11-13 15:49:29,316 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118 to 118. [2024-11-13 15:49:29,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 118 states, 93 states have (on average 1.4623655913978495) internal successors, (136), 117 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:49:29,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 136 transitions. [2024-11-13 15:49:29,317 INFO L78 Accepts]: Start accepts. Automaton has 118 states and 136 transitions. Word has length 20 [2024-11-13 15:49:29,317 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 15:49:29,318 INFO L471 AbstractCegarLoop]: Abstraction has 118 states and 136 transitions. [2024-11-13 15:49:29,318 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 4.0) internal successors, (20), 6 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:49:29,318 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 136 transitions. [2024-11-13 15:49:29,318 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2024-11-13 15:49:29,318 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 15:49:29,318 INFO L215 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 15:49:29,336 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba1c47ce-3c5d-48a4-a296-5baeabe11678/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Ended with exit code 0 [2024-11-13 15:49:29,519 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba1c47ce-3c5d-48a4-a296-5baeabe11678/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:49:29,519 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr17REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 42 more)] === [2024-11-13 15:49:29,520 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:49:29,520 INFO L85 PathProgramCache]: Analyzing trace with hash -1509722021, now seen corresponding path program 1 times [2024-11-13 15:49:29,520 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-13 15:49:29,520 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1155684717] [2024-11-13 15:49:29,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:49:29,520 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:49:29,521 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba1c47ce-3c5d-48a4-a296-5baeabe11678/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:49:29,523 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba1c47ce-3c5d-48a4-a296-5baeabe11678/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 15:49:29,524 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba1c47ce-3c5d-48a4-a296-5baeabe11678/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2024-11-13 15:49:29,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:49:29,669 INFO L255 TraceCheckSpWp]: Trace formula consists of 164 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-11-13 15:49:29,671 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:49:29,843 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:49:29,843 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 15:49:29,843 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-13 15:49:29,843 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1155684717] [2024-11-13 15:49:29,843 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1155684717] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 15:49:29,843 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 15:49:29,844 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-13 15:49:29,844 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1067068864] [2024-11-13 15:49:29,844 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 15:49:29,844 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-13 15:49:29,844 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-13 15:49:29,844 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-13 15:49:29,844 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-11-13 15:49:29,844 INFO L87 Difference]: Start difference. First operand 118 states and 136 transitions. Second operand has 7 states, 6 states have (on average 3.6666666666666665) internal successors, (22), 7 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:49:30,344 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 15:49:30,344 INFO L93 Difference]: Finished difference Result 117 states and 135 transitions. [2024-11-13 15:49:30,345 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-13 15:49:30,345 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 3.6666666666666665) internal successors, (22), 7 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2024-11-13 15:49:30,345 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 15:49:30,345 INFO L225 Difference]: With dead ends: 117 [2024-11-13 15:49:30,345 INFO L226 Difference]: Without dead ends: 117 [2024-11-13 15:49:30,346 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-11-13 15:49:30,346 INFO L432 NwaCegarLoop]: 57 mSDtfsCounter, 16 mSDsluCounter, 208 mSDsCounter, 0 mSdLazyCounter, 141 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 265 SdHoareTripleChecker+Invalid, 143 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 141 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-13 15:49:30,346 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 265 Invalid, 143 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 141 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-13 15:49:30,347 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2024-11-13 15:49:30,349 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 117. [2024-11-13 15:49:30,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 117 states, 93 states have (on average 1.4516129032258065) internal successors, (135), 116 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:49:30,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 135 transitions. [2024-11-13 15:49:30,350 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 135 transitions. Word has length 22 [2024-11-13 15:49:30,350 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 15:49:30,350 INFO L471 AbstractCegarLoop]: Abstraction has 117 states and 135 transitions. [2024-11-13 15:49:30,350 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 3.6666666666666665) internal successors, (22), 7 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:49:30,350 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 135 transitions. [2024-11-13 15:49:30,350 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2024-11-13 15:49:30,350 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 15:49:30,350 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 15:49:30,371 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba1c47ce-3c5d-48a4-a296-5baeabe11678/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Forceful destruction successful, exit code 0 [2024-11-13 15:49:30,551 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba1c47ce-3c5d-48a4-a296-5baeabe11678/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:49:30,551 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr44ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 42 more)] === [2024-11-13 15:49:30,551 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:49:30,551 INFO L85 PathProgramCache]: Analyzing trace with hash 676294414, now seen corresponding path program 1 times [2024-11-13 15:49:30,551 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-13 15:49:30,552 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [472003705] [2024-11-13 15:49:30,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:49:30,552 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:49:30,552 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba1c47ce-3c5d-48a4-a296-5baeabe11678/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:49:30,555 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba1c47ce-3c5d-48a4-a296-5baeabe11678/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 15:49:30,556 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba1c47ce-3c5d-48a4-a296-5baeabe11678/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2024-11-13 15:49:30,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:49:30,672 INFO L255 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-13 15:49:30,674 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:49:30,826 WARN L873 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_destroy_~head#1.base_13| (_ BitVec 64))) (and (= (_ bv0 1) (select |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_destroy_~head#1.base_13|)) (= |c_#valid| (store |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_destroy_~head#1.base_13| (_ bv0 1))))) is different from true [2024-11-13 15:49:30,840 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:49:30,840 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 15:49:30,840 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-13 15:49:30,840 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [472003705] [2024-11-13 15:49:30,840 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [472003705] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 15:49:30,840 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 15:49:30,840 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-13 15:49:30,840 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1792549988] [2024-11-13 15:49:30,841 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 15:49:30,841 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-13 15:49:30,841 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-13 15:49:30,841 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-13 15:49:30,841 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=22, Unknown=1, NotChecked=8, Total=42 [2024-11-13 15:49:30,842 INFO L87 Difference]: Start difference. First operand 117 states and 135 transitions. Second operand has 7 states, 6 states have (on average 3.8333333333333335) internal successors, (23), 7 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:49:31,473 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 15:49:31,473 INFO L93 Difference]: Finished difference Result 124 states and 141 transitions. [2024-11-13 15:49:31,473 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-13 15:49:31,473 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 3.8333333333333335) internal successors, (23), 7 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2024-11-13 15:49:31,474 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 15:49:31,474 INFO L225 Difference]: With dead ends: 124 [2024-11-13 15:49:31,474 INFO L226 Difference]: Without dead ends: 108 [2024-11-13 15:49:31,474 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=22, Unknown=1, NotChecked=8, Total=42 [2024-11-13 15:49:31,475 INFO L432 NwaCegarLoop]: 64 mSDtfsCounter, 0 mSDsluCounter, 143 mSDsCounter, 0 mSdLazyCounter, 169 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 207 SdHoareTripleChecker+Invalid, 265 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 169 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 96 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-13 15:49:31,475 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 207 Invalid, 265 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 169 Invalid, 0 Unknown, 96 Unchecked, 0.6s Time] [2024-11-13 15:49:31,475 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2024-11-13 15:49:31,477 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 108. [2024-11-13 15:49:31,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 108 states, 84 states have (on average 1.4880952380952381) internal successors, (125), 107 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:49:31,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 125 transitions. [2024-11-13 15:49:31,478 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 125 transitions. Word has length 23 [2024-11-13 15:49:31,478 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 15:49:31,478 INFO L471 AbstractCegarLoop]: Abstraction has 108 states and 125 transitions. [2024-11-13 15:49:31,478 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 3.8333333333333335) internal successors, (23), 7 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:49:31,478 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 125 transitions. [2024-11-13 15:49:31,478 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2024-11-13 15:49:31,478 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 15:49:31,478 INFO L215 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 15:49:31,496 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba1c47ce-3c5d-48a4-a296-5baeabe11678/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Ended with exit code 0 [2024-11-13 15:49:31,679 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba1c47ce-3c5d-48a4-a296-5baeabe11678/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:49:31,679 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr21REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 42 more)] === [2024-11-13 15:49:31,679 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:49:31,679 INFO L85 PathProgramCache]: Analyzing trace with hash -1937118302, now seen corresponding path program 1 times [2024-11-13 15:49:31,679 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-13 15:49:31,679 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1965482718] [2024-11-13 15:49:31,679 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:49:31,680 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:49:31,680 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba1c47ce-3c5d-48a4-a296-5baeabe11678/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:49:31,681 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba1c47ce-3c5d-48a4-a296-5baeabe11678/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 15:49:31,682 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba1c47ce-3c5d-48a4-a296-5baeabe11678/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2024-11-13 15:49:31,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:49:31,849 INFO L255 TraceCheckSpWp]: Trace formula consists of 178 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-11-13 15:49:31,851 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:49:32,046 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:49:32,046 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-13 15:49:32,046 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-13 15:49:32,046 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1965482718] [2024-11-13 15:49:32,046 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1965482718] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 15:49:32,046 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 15:49:32,046 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-13 15:49:32,047 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1055719848] [2024-11-13 15:49:32,047 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 15:49:32,047 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-13 15:49:32,047 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-13 15:49:32,047 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-13 15:49:32,047 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-11-13 15:49:32,047 INFO L87 Difference]: Start difference. First operand 108 states and 125 transitions. Second operand has 8 states, 7 states have (on average 3.7142857142857144) internal successors, (26), 8 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:49:32,666 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 15:49:32,666 INFO L93 Difference]: Finished difference Result 106 states and 121 transitions. [2024-11-13 15:49:32,666 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-13 15:49:32,666 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.7142857142857144) internal successors, (26), 8 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2024-11-13 15:49:32,666 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 15:49:32,667 INFO L225 Difference]: With dead ends: 106 [2024-11-13 15:49:32,667 INFO L226 Difference]: Without dead ends: 106 [2024-11-13 15:49:32,667 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-11-13 15:49:32,667 INFO L432 NwaCegarLoop]: 36 mSDtfsCounter, 52 mSDsluCounter, 112 mSDsCounter, 0 mSdLazyCounter, 172 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 52 SdHoareTripleChecker+Valid, 148 SdHoareTripleChecker+Invalid, 175 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 172 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-13 15:49:32,668 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [52 Valid, 148 Invalid, 175 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 172 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-13 15:49:32,668 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2024-11-13 15:49:32,670 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 105. [2024-11-13 15:49:32,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 105 states, 83 states have (on average 1.4457831325301205) internal successors, (120), 104 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:49:32,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 120 transitions. [2024-11-13 15:49:32,671 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 120 transitions. Word has length 26 [2024-11-13 15:49:32,671 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 15:49:32,671 INFO L471 AbstractCegarLoop]: Abstraction has 105 states and 120 transitions. [2024-11-13 15:49:32,671 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.7142857142857144) internal successors, (26), 8 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:49:32,671 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 120 transitions. [2024-11-13 15:49:32,671 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2024-11-13 15:49:32,671 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 15:49:32,672 INFO L215 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 15:49:32,694 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba1c47ce-3c5d-48a4-a296-5baeabe11678/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Ended with exit code 0 [2024-11-13 15:49:32,872 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba1c47ce-3c5d-48a4-a296-5baeabe11678/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:49:32,872 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr18REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 42 more)] === [2024-11-13 15:49:32,872 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:49:32,872 INFO L85 PathProgramCache]: Analyzing trace with hash -1937116637, now seen corresponding path program 1 times [2024-11-13 15:49:32,872 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-13 15:49:32,873 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2002749032] [2024-11-13 15:49:32,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:49:32,873 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:49:32,873 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba1c47ce-3c5d-48a4-a296-5baeabe11678/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:49:32,874 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba1c47ce-3c5d-48a4-a296-5baeabe11678/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 15:49:32,876 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba1c47ce-3c5d-48a4-a296-5baeabe11678/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2024-11-13 15:49:33,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:49:33,035 INFO L255 TraceCheckSpWp]: Trace formula consists of 178 conjuncts, 41 conjuncts are in the unsatisfiable core [2024-11-13 15:49:33,038 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:49:33,069 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-13 15:49:33,080 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-13 15:49:33,162 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2024-11-13 15:49:33,162 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2024-11-13 15:49:33,213 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 [2024-11-13 15:49:33,225 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 [2024-11-13 15:49:33,350 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2024-11-13 15:49:33,366 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2024-11-13 15:49:33,548 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-13 15:49:33,710 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 27 treesize of output 15 [2024-11-13 15:49:33,770 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:49:33,770 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 15:49:33,910 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 36 treesize of output 32 [2024-11-13 15:49:34,483 INFO L349 Elim1Store]: treesize reduction 7, result has 30.0 percent of original size [2024-11-13 15:49:34,483 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 16 treesize of output 15 [2024-11-13 15:49:34,496 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse0 (bvadd (_ bv8 64) |c_ULTIMATE.start_create_~head~0#1.offset|))) (and (forall ((v_ArrVal_709 (Array (_ BitVec 64) (_ BitVec 64)))) (= (select (select (store |c_#memory_$Pointer$#0.offset| |c_ULTIMATE.start_create_~ptr~0#1.base| v_ArrVal_709) |c_ULTIMATE.start_create_~head~0#1.base|) .cse0) |c_ULTIMATE.start_create_~head~0#1.offset|)) (forall ((v_ArrVal_708 (Array (_ BitVec 64) (_ BitVec 64)))) (= |c_ULTIMATE.start_create_~head~0#1.base| (select (select (store |c_#memory_$Pointer$#0.base| |c_ULTIMATE.start_create_~ptr~0#1.base| v_ArrVal_708) |c_ULTIMATE.start_create_~head~0#1.base|) .cse0))))) is different from false [2024-11-13 15:49:34,762 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-13 15:49:34,762 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 22 treesize of output 23 [2024-11-13 15:49:34,767 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 36 treesize of output 24 [2024-11-13 15:49:34,774 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2024-11-13 15:49:34,783 INFO L349 Elim1Store]: treesize reduction 9, result has 10.0 percent of original size [2024-11-13 15:49:34,783 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 22 treesize of output 1 [2024-11-13 15:49:38,846 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:49:38,846 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-13 15:49:38,846 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2002749032] [2024-11-13 15:49:38,846 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2002749032] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 15:49:38,846 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-13 15:49:38,846 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 13] total 24 [2024-11-13 15:49:38,846 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [664584327] [2024-11-13 15:49:38,846 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-13 15:49:38,847 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2024-11-13 15:49:38,847 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-13 15:49:38,847 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2024-11-13 15:49:38,847 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=477, Unknown=12, NotChecked=44, Total=600 [2024-11-13 15:49:38,848 INFO L87 Difference]: Start difference. First operand 105 states and 120 transitions. Second operand has 25 states, 24 states have (on average 1.9583333333333333) internal successors, (47), 25 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:49:41,581 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 15:49:41,581 INFO L93 Difference]: Finished difference Result 123 states and 142 transitions. [2024-11-13 15:49:41,581 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-13 15:49:41,581 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 24 states have (on average 1.9583333333333333) internal successors, (47), 25 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2024-11-13 15:49:41,582 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 15:49:41,582 INFO L225 Difference]: With dead ends: 123 [2024-11-13 15:49:41,582 INFO L226 Difference]: Without dead ends: 123 [2024-11-13 15:49:41,582 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 27 SyntacticMatches, 1 SemanticMatches, 33 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 206 ImplicationChecksByTransitivity, 5.7s TimeCoverageRelationStatistics Valid=162, Invalid=952, Unknown=12, NotChecked=64, Total=1190 [2024-11-13 15:49:41,583 INFO L432 NwaCegarLoop]: 54 mSDtfsCounter, 62 mSDsluCounter, 541 mSDsCounter, 0 mSdLazyCounter, 618 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 62 SdHoareTripleChecker+Valid, 595 SdHoareTripleChecker+Invalid, 699 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 618 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 63 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2024-11-13 15:49:41,583 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [62 Valid, 595 Invalid, 699 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 618 Invalid, 0 Unknown, 63 Unchecked, 2.0s Time] [2024-11-13 15:49:41,583 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123 states. [2024-11-13 15:49:41,585 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123 to 116. [2024-11-13 15:49:41,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 116 states, 94 states have (on average 1.425531914893617) internal successors, (134), 115 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:49:41,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 134 transitions. [2024-11-13 15:49:41,585 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 134 transitions. Word has length 26 [2024-11-13 15:49:41,586 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 15:49:41,586 INFO L471 AbstractCegarLoop]: Abstraction has 116 states and 134 transitions. [2024-11-13 15:49:41,586 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 24 states have (on average 1.9583333333333333) internal successors, (47), 25 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:49:41,586 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 134 transitions. [2024-11-13 15:49:41,586 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2024-11-13 15:49:41,586 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 15:49:41,586 INFO L215 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 15:49:41,607 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba1c47ce-3c5d-48a4-a296-5baeabe11678/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Ended with exit code 0 [2024-11-13 15:49:41,786 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba1c47ce-3c5d-48a4-a296-5baeabe11678/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:49:41,787 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr19REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 42 more)] === [2024-11-13 15:49:41,787 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:49:41,787 INFO L85 PathProgramCache]: Analyzing trace with hash -1937116636, now seen corresponding path program 1 times [2024-11-13 15:49:41,787 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-13 15:49:41,787 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1981296488] [2024-11-13 15:49:41,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:49:41,787 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:49:41,788 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba1c47ce-3c5d-48a4-a296-5baeabe11678/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:49:41,789 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba1c47ce-3c5d-48a4-a296-5baeabe11678/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 15:49:41,790 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba1c47ce-3c5d-48a4-a296-5baeabe11678/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2024-11-13 15:49:41,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:49:41,948 INFO L255 TraceCheckSpWp]: Trace formula consists of 178 conjuncts, 51 conjuncts are in the unsatisfiable core [2024-11-13 15:49:41,951 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:49:41,982 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-13 15:49:42,006 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-13 15:49:42,081 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2024-11-13 15:49:42,104 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2024-11-13 15:49:42,104 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2024-11-13 15:49:42,173 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 [2024-11-13 15:49:42,194 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 [2024-11-13 15:49:42,318 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2024-11-13 15:49:42,338 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2024-11-13 15:49:42,572 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-13 15:49:42,591 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-13 15:49:42,824 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 25 treesize of output 13 [2024-11-13 15:49:42,836 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2024-11-13 15:49:42,933 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:49:42,933 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 15:49:43,782 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 60 treesize of output 56 [2024-11-13 15:49:43,786 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 90 treesize of output 82 [2024-11-13 15:49:43,885 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 36 treesize of output 28 [2024-11-13 15:49:45,089 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse1 (bvadd (_ bv12 64) |c_ULTIMATE.start_create_~ptr~0#1.offset|)) (.cse0 (bvadd (_ bv8 64) |c_ULTIMATE.start_create_~head~0#1.offset|))) (and (forall ((v_ArrVal_772 (Array (_ BitVec 64) (_ BitVec 64)))) (= (select (select (store |c_#memory_$Pointer$#0.offset| |c_ULTIMATE.start_create_~ptr~0#1.base| v_ArrVal_772) |c_ULTIMATE.start_create_~head~0#1.base|) .cse0) |c_ULTIMATE.start_create_~head~0#1.offset|)) (bvule (bvadd (_ bv4 64) |c_ULTIMATE.start_create_~ptr~0#1.offset|) .cse1) (bvule .cse1 (select |c_#length| |c_ULTIMATE.start_create_~ptr~0#1.base|)) (forall ((v_ArrVal_771 (Array (_ BitVec 64) (_ BitVec 64)))) (= (select (select (store |c_#memory_$Pointer$#0.base| |c_ULTIMATE.start_create_~ptr~0#1.base| v_ArrVal_771) |c_ULTIMATE.start_create_~head~0#1.base|) .cse0) |c_ULTIMATE.start_create_~head~0#1.base|)))) is different from false [2024-11-13 15:49:45,385 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-13 15:49:45,385 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 22 treesize of output 23 [2024-11-13 15:49:45,391 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 36 treesize of output 24 [2024-11-13 15:49:45,399 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2024-11-13 15:49:45,413 INFO L349 Elim1Store]: treesize reduction 9, result has 10.0 percent of original size [2024-11-13 15:49:45,414 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 22 treesize of output 1 [2024-11-13 15:49:49,577 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:49:49,577 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-13 15:49:49,577 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1981296488] [2024-11-13 15:49:49,577 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1981296488] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 15:49:49,577 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-13 15:49:49,577 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 25 [2024-11-13 15:49:49,577 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1812611700] [2024-11-13 15:49:49,577 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-13 15:49:49,578 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2024-11-13 15:49:49,578 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-13 15:49:49,578 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2024-11-13 15:49:49,578 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=533, Unknown=2, NotChecked=46, Total=650 [2024-11-13 15:49:49,578 INFO L87 Difference]: Start difference. First operand 116 states and 134 transitions. Second operand has 26 states, 25 states have (on average 2.04) internal successors, (51), 26 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:49:55,732 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 15:49:55,732 INFO L93 Difference]: Finished difference Result 123 states and 140 transitions. [2024-11-13 15:49:55,732 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-13 15:49:55,733 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 25 states have (on average 2.04) internal successors, (51), 26 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2024-11-13 15:49:55,733 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 15:49:55,733 INFO L225 Difference]: With dead ends: 123 [2024-11-13 15:49:55,733 INFO L226 Difference]: Without dead ends: 123 [2024-11-13 15:49:55,734 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 221 ImplicationChecksByTransitivity, 7.9s TimeCoverageRelationStatistics Valid=151, Invalid=1041, Unknown=2, NotChecked=66, Total=1260 [2024-11-13 15:49:55,734 INFO L432 NwaCegarLoop]: 55 mSDtfsCounter, 86 mSDsluCounter, 598 mSDsCounter, 0 mSdLazyCounter, 659 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 86 SdHoareTripleChecker+Valid, 653 SdHoareTripleChecker+Invalid, 745 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 659 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 70 IncrementalHoareTripleChecker+Unchecked, 4.7s IncrementalHoareTripleChecker+Time [2024-11-13 15:49:55,734 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [86 Valid, 653 Invalid, 745 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 659 Invalid, 0 Unknown, 70 Unchecked, 4.7s Time] [2024-11-13 15:49:55,735 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123 states. [2024-11-13 15:49:55,735 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123 to 116. [2024-11-13 15:49:55,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 116 states, 94 states have (on average 1.4042553191489362) internal successors, (132), 115 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:49:55,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 132 transitions. [2024-11-13 15:49:55,736 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 132 transitions. Word has length 26 [2024-11-13 15:49:55,736 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 15:49:55,736 INFO L471 AbstractCegarLoop]: Abstraction has 116 states and 132 transitions. [2024-11-13 15:49:55,736 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 25 states have (on average 2.04) internal successors, (51), 26 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:49:55,736 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 132 transitions. [2024-11-13 15:49:55,736 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2024-11-13 15:49:55,736 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 15:49:55,737 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 15:49:55,756 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba1c47ce-3c5d-48a4-a296-5baeabe11678/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Forceful destruction successful, exit code 0 [2024-11-13 15:49:55,937 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba1c47ce-3c5d-48a4-a296-5baeabe11678/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:49:55,937 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr14REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 42 more)] === [2024-11-13 15:49:55,937 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:49:55,938 INFO L85 PathProgramCache]: Analyzing trace with hash -1421897491, now seen corresponding path program 1 times [2024-11-13 15:49:55,938 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-13 15:49:55,938 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1565643041] [2024-11-13 15:49:55,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:49:55,938 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:49:55,938 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba1c47ce-3c5d-48a4-a296-5baeabe11678/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:49:55,940 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba1c47ce-3c5d-48a4-a296-5baeabe11678/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 15:49:55,942 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba1c47ce-3c5d-48a4-a296-5baeabe11678/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2024-11-13 15:49:56,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:49:56,135 INFO L255 TraceCheckSpWp]: Trace formula consists of 251 conjuncts, 54 conjuncts are in the unsatisfiable core [2024-11-13 15:49:56,140 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:49:56,189 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-13 15:49:56,199 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-13 15:49:56,284 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2024-11-13 15:49:56,285 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2024-11-13 15:49:56,323 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 [2024-11-13 15:49:56,340 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 [2024-11-13 15:49:56,445 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2024-11-13 15:49:56,647 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 26 treesize of output 14 [2024-11-13 15:49:56,745 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 [2024-11-13 15:49:56,866 INFO L349 Elim1Store]: treesize reduction 19, result has 20.8 percent of original size [2024-11-13 15:49:56,866 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 36 treesize of output 35 [2024-11-13 15:49:56,937 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 35 treesize of output 19 [2024-11-13 15:49:57,150 INFO L349 Elim1Store]: treesize reduction 60, result has 34.1 percent of original size [2024-11-13 15:49:57,150 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 32 treesize of output 44 [2024-11-13 15:49:57,254 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 36 treesize of output 27 [2024-11-13 15:49:57,375 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 19 [2024-11-13 15:49:57,727 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:49:57,727 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 15:49:59,008 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_874 (_ BitVec 64)) (v_ArrVal_877 (Array (_ BitVec 64) (_ BitVec 64))) (v_ArrVal_873 (Array (_ BitVec 64) (_ BitVec 64))) (|v_ULTIMATE.start_create_~ptr~0#1.base_21| (_ BitVec 64))) (or (not (= (select |c_#valid| |v_ULTIMATE.start_create_~ptr~0#1.base_21|) (_ bv0 1))) (= (_ bv0 1) (bvadd (_ bv1 1) (select (store |c_#valid| |v_ULTIMATE.start_create_~ptr~0#1.base_21| (_ bv1 1)) (select (select (store (let ((.cse0 (store |c_#memory_$Pointer$#0.base| |c_ULTIMATE.start___list_add_~new#1.base| v_ArrVal_873))) (store .cse0 |c_ULTIMATE.start___list_add_~prev#1.base| (store (select .cse0 |c_ULTIMATE.start___list_add_~prev#1.base|) |c_ULTIMATE.start___list_add_~prev#1.offset| v_ArrVal_874))) |v_ULTIMATE.start_create_~ptr~0#1.base_21| v_ArrVal_877) |c_ULTIMATE.start_create_~head~0#1.base|) (bvadd (_ bv8 64) |c_ULTIMATE.start_create_~head~0#1.offset|))))))) is different from false [2024-11-13 15:50:04,419 INFO L349 Elim1Store]: treesize reduction 109, result has 55.3 percent of original size [2024-11-13 15:50:04,419 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 221 treesize of output 286 [2024-11-13 15:50:04,599 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_874 (_ BitVec 64)) (v_ArrVal_877 (Array (_ BitVec 64) (_ BitVec 64))) (v_ArrVal_873 (Array (_ BitVec 64) (_ BitVec 64))) (|v_ULTIMATE.start_create_~ptr~0#1.base_21| (_ BitVec 64))) (let ((.cse0 (select (select (store (let ((.cse4 (select |c_#memory_$Pointer$#0.base| |c_ULTIMATE.start_list_add_tail_~head#1.base|)) (.cse3 (bvadd (_ bv8 64) |c_ULTIMATE.start_list_add_tail_~head#1.offset|))) (let ((.cse1 (store (store |c_#memory_$Pointer$#0.base| |c_ULTIMATE.start_list_add_tail_~head#1.base| (store .cse4 .cse3 |c_ULTIMATE.start_list_add_tail_~new#1.base|)) |c_ULTIMATE.start_list_add_tail_~new#1.base| v_ArrVal_873)) (.cse2 (select .cse4 .cse3))) (store .cse1 .cse2 (store (select .cse1 .cse2) (select (select |c_#memory_$Pointer$#0.offset| |c_ULTIMATE.start_list_add_tail_~head#1.base|) .cse3) v_ArrVal_874)))) |v_ULTIMATE.start_create_~ptr~0#1.base_21| v_ArrVal_877) |c_ULTIMATE.start_create_~head~0#1.base|) (bvadd (_ bv8 64) |c_ULTIMATE.start_create_~head~0#1.offset|)))) (or (= .cse0 |v_ULTIMATE.start_create_~ptr~0#1.base_21|) (= |c_ULTIMATE.start_list_add_tail_~new#1.base| |v_ULTIMATE.start_create_~ptr~0#1.base_21|) (= |c_ULTIMATE.start_list_add_tail_~head#1.base| |v_ULTIMATE.start_create_~ptr~0#1.base_21|) (= .cse0 |c_ULTIMATE.start_list_add_tail_~new#1.base|) (= .cse0 |c_ULTIMATE.start_list_add_tail_~head#1.base|)))) is different from false [2024-11-13 15:50:04,778 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_874 (_ BitVec 64)) (v_ArrVal_877 (Array (_ BitVec 64) (_ BitVec 64))) (v_ArrVal_873 (Array (_ BitVec 64) (_ BitVec 64))) (|v_ULTIMATE.start_create_~ptr~0#1.base_21| (_ BitVec 64))) (let ((.cse0 (let ((.cse3 (bvadd (_ bv8 64) |c_ULTIMATE.start_create_~head~0#1.offset|))) (select (select (store (let ((.cse4 (select |c_#memory_$Pointer$#0.base| |c_ULTIMATE.start_create_~head~0#1.base|))) (let ((.cse1 (store (store |c_#memory_$Pointer$#0.base| |c_ULTIMATE.start_create_~head~0#1.base| (store .cse4 .cse3 |c_ULTIMATE.start_create_~ptr~0#1.base|)) |c_ULTIMATE.start_create_~ptr~0#1.base| v_ArrVal_873)) (.cse2 (select .cse4 .cse3))) (store .cse1 .cse2 (store (select .cse1 .cse2) (select (select |c_#memory_$Pointer$#0.offset| |c_ULTIMATE.start_create_~head~0#1.base|) .cse3) v_ArrVal_874)))) |v_ULTIMATE.start_create_~ptr~0#1.base_21| v_ArrVal_877) |c_ULTIMATE.start_create_~head~0#1.base|) .cse3)))) (or (= |c_ULTIMATE.start_create_~head~0#1.base| |v_ULTIMATE.start_create_~ptr~0#1.base_21|) (= |c_ULTIMATE.start_create_~ptr~0#1.base| .cse0) (= .cse0 |v_ULTIMATE.start_create_~ptr~0#1.base_21|) (= |c_ULTIMATE.start_create_~head~0#1.base| .cse0) (= |c_ULTIMATE.start_create_~ptr~0#1.base| |v_ULTIMATE.start_create_~ptr~0#1.base_21|)))) is different from false [2024-11-13 15:50:05,022 WARN L851 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_874 (_ BitVec 64)) (v_ArrVal_877 (Array (_ BitVec 64) (_ BitVec 64))) (v_ArrVal_869 (Array (_ BitVec 64) (_ BitVec 64))) (v_ArrVal_870 (Array (_ BitVec 64) (_ BitVec 64))) (v_ArrVal_873 (Array (_ BitVec 64) (_ BitVec 64))) (|v_ULTIMATE.start_create_~ptr~0#1.base_21| (_ BitVec 64))) (let ((.cse0 (let ((.cse3 (bvadd (_ bv8 64) |c_ULTIMATE.start_create_~head~0#1.offset|))) (select (select (store (let ((.cse4 (select (store |c_#memory_$Pointer$#0.base| |c_ULTIMATE.start_create_~ptr~0#1.base| v_ArrVal_870) |c_ULTIMATE.start_create_~head~0#1.base|))) (let ((.cse1 (store (store |c_#memory_$Pointer$#0.base| |c_ULTIMATE.start_create_~head~0#1.base| (store .cse4 .cse3 |c_ULTIMATE.start_create_~ptr~0#1.base|)) |c_ULTIMATE.start_create_~ptr~0#1.base| v_ArrVal_873)) (.cse2 (select .cse4 .cse3))) (store .cse1 .cse2 (store (select .cse1 .cse2) (select (select (store |c_#memory_$Pointer$#0.offset| |c_ULTIMATE.start_create_~ptr~0#1.base| v_ArrVal_869) |c_ULTIMATE.start_create_~head~0#1.base|) .cse3) v_ArrVal_874)))) |v_ULTIMATE.start_create_~ptr~0#1.base_21| v_ArrVal_877) |c_ULTIMATE.start_create_~head~0#1.base|) .cse3)))) (or (= |c_ULTIMATE.start_create_~head~0#1.base| |v_ULTIMATE.start_create_~ptr~0#1.base_21|) (= .cse0 |c_ULTIMATE.start_create_~ptr~0#1.base|) (= .cse0 |v_ULTIMATE.start_create_~ptr~0#1.base_21|) (= |c_ULTIMATE.start_create_~ptr~0#1.base| |v_ULTIMATE.start_create_~ptr~0#1.base_21|) (= .cse0 |c_ULTIMATE.start_create_~head~0#1.base|)))) is different from false [2024-11-13 15:50:19,155 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-13 15:50:19,387 INFO L349 Elim1Store]: treesize reduction 15, result has 67.4 percent of original size [2024-11-13 15:50:19,387 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 5642 treesize of output 3933 [2024-11-13 15:50:19,469 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-13 15:50:19,470 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 782 treesize of output 672 [2024-11-13 15:50:19,651 INFO L349 Elim1Store]: treesize reduction 16, result has 51.5 percent of original size [2024-11-13 15:50:19,652 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 1201 treesize of output 1157 [2024-11-13 15:50:19,715 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 710 treesize of output 650 [2024-11-13 15:50:19,745 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 422 treesize of output 338 [2024-11-13 15:50:19,772 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 260 treesize of output 236 [2024-11-13 15:50:19,793 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 278 treesize of output 242 [2024-11-13 15:50:25,500 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 4 not checked. [2024-11-13 15:50:25,500 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-13 15:50:25,501 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1565643041] [2024-11-13 15:50:25,501 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1565643041] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 15:50:25,501 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-13 15:50:25,501 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 18] total 34 [2024-11-13 15:50:25,501 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [555904082] [2024-11-13 15:50:25,501 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-13 15:50:25,501 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2024-11-13 15:50:25,501 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-13 15:50:25,502 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2024-11-13 15:50:25,502 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=148, Invalid=765, Unknown=33, NotChecked=244, Total=1190 [2024-11-13 15:50:25,502 INFO L87 Difference]: Start difference. First operand 116 states and 132 transitions. Second operand has 35 states, 34 states have (on average 1.5588235294117647) internal successors, (53), 35 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:50:39,293 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.22s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-13 15:50:44,994 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2024-11-13 15:50:50,046 WARN L539 Checker$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] [2024-11-13 15:50:54,053 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2024-11-13 15:50:58,657 WARN L539 Checker$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] [2024-11-13 15:51:10,702 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.47s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2024-11-13 15:51:12,226 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2024-11-13 15:51:35,273 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.68s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2024-11-13 15:51:44,824 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.82s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2024-11-13 15:51:48,854 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2024-11-13 15:51:52,861 WARN L539 Checker$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] [2024-11-13 15:51:56,932 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2024-11-13 15:52:08,250 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-13 15:52:17,706 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-13 15:52:52,247 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-13 15:53:00,557 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 15:53:00,557 INFO L93 Difference]: Finished difference Result 137 states and 156 transitions. [2024-11-13 15:53:00,558 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2024-11-13 15:53:00,558 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 34 states have (on average 1.5588235294117647) internal successors, (53), 35 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2024-11-13 15:53:00,558 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 15:53:00,559 INFO L225 Difference]: With dead ends: 137 [2024-11-13 15:53:00,559 INFO L226 Difference]: Without dead ends: 137 [2024-11-13 15:53:00,559 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 19 SyntacticMatches, 4 SemanticMatches, 51 ConstructedPredicates, 4 IntricatePredicates, 0 DeprecatedPredicates, 510 ImplicationChecksByTransitivity, 112.2s TimeCoverageRelationStatistics Valid=394, Invalid=1913, Unknown=61, NotChecked=388, Total=2756 [2024-11-13 15:53:00,560 INFO L432 NwaCegarLoop]: 61 mSDtfsCounter, 83 mSDsluCounter, 851 mSDsCounter, 0 mSdLazyCounter, 825 mSolverCounterSat, 11 mSolverCounterUnsat, 47 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 67.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 83 SdHoareTripleChecker+Valid, 912 SdHoareTripleChecker+Invalid, 1175 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 825 IncrementalHoareTripleChecker+Invalid, 47 IncrementalHoareTripleChecker+Unknown, 292 IncrementalHoareTripleChecker+Unchecked, 68.6s IncrementalHoareTripleChecker+Time [2024-11-13 15:53:00,560 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [83 Valid, 912 Invalid, 1175 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 825 Invalid, 47 Unknown, 292 Unchecked, 68.6s Time] [2024-11-13 15:53:00,561 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137 states. [2024-11-13 15:53:00,563 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 137 to 136. [2024-11-13 15:53:00,564 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 136 states, 114 states have (on average 1.3596491228070176) internal successors, (155), 135 states have internal predecessors, (155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:53:00,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136 states to 136 states and 155 transitions. [2024-11-13 15:53:00,568 INFO L78 Accepts]: Start accepts. Automaton has 136 states and 155 transitions. Word has length 27 [2024-11-13 15:53:00,568 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 15:53:00,568 INFO L471 AbstractCegarLoop]: Abstraction has 136 states and 155 transitions. [2024-11-13 15:53:00,569 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 34 states have (on average 1.5588235294117647) internal successors, (53), 35 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:53:00,569 INFO L276 IsEmpty]: Start isEmpty. Operand 136 states and 155 transitions. [2024-11-13 15:53:00,569 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2024-11-13 15:53:00,569 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 15:53:00,569 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 15:53:00,591 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba1c47ce-3c5d-48a4-a296-5baeabe11678/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Ended with exit code 0 [2024-11-13 15:53:00,769 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba1c47ce-3c5d-48a4-a296-5baeabe11678/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:53:00,770 INFO L396 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr15REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 42 more)] === [2024-11-13 15:53:00,770 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:53:00,770 INFO L85 PathProgramCache]: Analyzing trace with hash -1421897490, now seen corresponding path program 1 times [2024-11-13 15:53:00,770 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-13 15:53:00,770 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1189484781] [2024-11-13 15:53:00,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:53:00,770 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:53:00,771 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba1c47ce-3c5d-48a4-a296-5baeabe11678/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:53:00,772 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba1c47ce-3c5d-48a4-a296-5baeabe11678/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 15:53:00,773 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba1c47ce-3c5d-48a4-a296-5baeabe11678/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2024-11-13 15:53:00,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:53:00,989 INFO L255 TraceCheckSpWp]: Trace formula consists of 251 conjuncts, 67 conjuncts are in the unsatisfiable core [2024-11-13 15:53:00,994 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:53:01,082 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-13 15:53:01,123 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-13 15:53:01,381 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2024-11-13 15:53:01,381 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2024-11-13 15:53:01,438 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2024-11-13 15:53:01,611 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 [2024-11-13 15:53:01,636 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 [2024-11-13 15:53:02,950 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 26 treesize of output 14 [2024-11-13 15:53:02,991 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 11 [2024-11-13 15:53:03,356 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 [2024-11-13 15:53:03,393 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 [2024-11-13 15:53:03,570 INFO L349 Elim1Store]: treesize reduction 19, result has 20.8 percent of original size [2024-11-13 15:53:03,570 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 61 treesize of output 54 [2024-11-13 15:53:03,607 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 24 treesize of output 11 [2024-11-13 15:53:03,932 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 [2024-11-13 15:53:03,965 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 44 treesize of output 24 [2024-11-13 15:53:04,555 INFO L349 Elim1Store]: treesize reduction 12, result has 52.0 percent of original size [2024-11-13 15:53:04,555 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 24 treesize of output 26 [2024-11-13 15:53:04,597 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 13 [2024-11-13 15:53:04,859 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 34 treesize of output 25 [2024-11-13 15:53:04,890 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 16 [2024-11-13 15:53:05,305 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-13 15:53:05,305 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 15 treesize of output 7 [2024-11-13 15:53:05,319 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 25 treesize of output 13 [2024-11-13 15:53:05,802 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:53:05,803 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 15:53:07,362 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse0 (bvadd (_ bv8 64) |c_ULTIMATE.start_create_~head~0#1.offset|))) (and (forall ((v_ArrVal_986 (Array (_ BitVec 64) (_ BitVec 64))) (v_ArrVal_985 (Array (_ BitVec 64) (_ BitVec 64)))) (bvule (bvadd (select (select (store |c_#memory_$Pointer$#0.offset| |c_ULTIMATE.start_create_~ptr~0#1.base| v_ArrVal_985) |c_ULTIMATE.start_create_~head~0#1.base|) .cse0) (_ bv8 64)) (select |c_#length| (select (select (store |c_#memory_$Pointer$#0.base| |c_ULTIMATE.start_create_~ptr~0#1.base| v_ArrVal_986) |c_ULTIMATE.start_create_~head~0#1.base|) .cse0)))) (forall ((v_ArrVal_985 (Array (_ BitVec 64) (_ BitVec 64)))) (let ((.cse1 (select (select (store |c_#memory_$Pointer$#0.offset| |c_ULTIMATE.start_create_~ptr~0#1.base| v_ArrVal_985) |c_ULTIMATE.start_create_~head~0#1.base|) .cse0))) (bvule .cse1 (bvadd .cse1 (_ bv8 64))))))) is different from false [2024-11-13 15:53:07,548 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse1 (bvadd (_ bv8 64) |c_ULTIMATE.start_create_~head~0#1.offset|))) (and (forall ((|v_ULTIMATE.start_create_~ptr~0#1.base_25| (_ BitVec 64))) (or (not (= (_ bv0 1) (select |c_#valid| |v_ULTIMATE.start_create_~ptr~0#1.base_25|))) (forall ((v_ArrVal_985 (Array (_ BitVec 64) (_ BitVec 64)))) (let ((.cse0 (select (select (store |c_#memory_$Pointer$#0.offset| |v_ULTIMATE.start_create_~ptr~0#1.base_25| v_ArrVal_985) |c_ULTIMATE.start_create_~head~0#1.base|) .cse1))) (bvule .cse0 (bvadd (_ bv8 64) .cse0)))))) (forall ((|v_ULTIMATE.start_create_~ptr~0#1.base_25| (_ BitVec 64))) (or (not (= (_ bv0 1) (select |c_#valid| |v_ULTIMATE.start_create_~ptr~0#1.base_25|))) (forall ((v_ArrVal_984 (_ BitVec 64)) (v_ArrVal_986 (Array (_ BitVec 64) (_ BitVec 64))) (v_ArrVal_985 (Array (_ BitVec 64) (_ BitVec 64)))) (bvule (bvadd (_ bv8 64) (select (select (store |c_#memory_$Pointer$#0.offset| |v_ULTIMATE.start_create_~ptr~0#1.base_25| v_ArrVal_985) |c_ULTIMATE.start_create_~head~0#1.base|) .cse1)) (select (store |c_#length| |v_ULTIMATE.start_create_~ptr~0#1.base_25| v_ArrVal_984) (select (select (store |c_#memory_$Pointer$#0.base| |v_ULTIMATE.start_create_~ptr~0#1.base_25| v_ArrVal_986) |c_ULTIMATE.start_create_~head~0#1.base|) .cse1)))))))) is different from false [2024-11-13 15:53:07,939 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse0 (store |c_#memory_$Pointer$#0.offset| |c_ULTIMATE.start___list_add_~prev#1.base| (store (select |c_#memory_$Pointer$#0.offset| |c_ULTIMATE.start___list_add_~prev#1.base|) |c_ULTIMATE.start___list_add_~prev#1.offset| |c_ULTIMATE.start___list_add_~new#1.offset|))) (.cse1 (bvadd (_ bv8 64) |c_ULTIMATE.start_create_~head~0#1.offset|))) (and (forall ((v_ArrVal_983 (_ BitVec 64)) (|v_ULTIMATE.start_create_~ptr~0#1.base_25| (_ BitVec 64))) (or (forall ((v_ArrVal_984 (_ BitVec 64)) (v_ArrVal_986 (Array (_ BitVec 64) (_ BitVec 64))) (v_ArrVal_985 (Array (_ BitVec 64) (_ BitVec 64)))) (bvule (bvadd (select (select (store .cse0 |v_ULTIMATE.start_create_~ptr~0#1.base_25| v_ArrVal_985) |c_ULTIMATE.start_create_~head~0#1.base|) .cse1) (_ bv8 64)) (select (store |c_#length| |v_ULTIMATE.start_create_~ptr~0#1.base_25| v_ArrVal_984) (select (select (store (store |c_#memory_$Pointer$#0.base| |c_ULTIMATE.start___list_add_~prev#1.base| (store (select |c_#memory_$Pointer$#0.base| |c_ULTIMATE.start___list_add_~prev#1.base|) |c_ULTIMATE.start___list_add_~prev#1.offset| v_ArrVal_983)) |v_ULTIMATE.start_create_~ptr~0#1.base_25| v_ArrVal_986) |c_ULTIMATE.start_create_~head~0#1.base|) .cse1)))) (not (= (_ bv0 1) (select |c_#valid| |v_ULTIMATE.start_create_~ptr~0#1.base_25|))))) (forall ((|v_ULTIMATE.start_create_~ptr~0#1.base_25| (_ BitVec 64))) (or (forall ((v_ArrVal_985 (Array (_ BitVec 64) (_ BitVec 64)))) (let ((.cse2 (select (select (store .cse0 |v_ULTIMATE.start_create_~ptr~0#1.base_25| v_ArrVal_985) |c_ULTIMATE.start_create_~head~0#1.base|) .cse1))) (bvule .cse2 (bvadd .cse2 (_ bv8 64))))) (not (= (_ bv0 1) (select |c_#valid| |v_ULTIMATE.start_create_~ptr~0#1.base_25|))))))) is different from false [2024-11-13 15:53:11,435 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse4 (bvadd (_ bv8 64) |c_ULTIMATE.start___list_add_~next#1.offset|))) (let ((.cse1 (store |c_#memory_$Pointer$#0.offset| |c_ULTIMATE.start___list_add_~next#1.base| (store (select |c_#memory_$Pointer$#0.offset| |c_ULTIMATE.start___list_add_~next#1.base|) .cse4 |c_ULTIMATE.start___list_add_~new#1.offset|))) (.cse2 (bvadd (_ bv8 64) |c_ULTIMATE.start_create_~head~0#1.offset|))) (and (forall ((v_ArrVal_983 (_ BitVec 64)) (v_ArrVal_979 (Array (_ BitVec 64) (_ BitVec 64))) (v_ArrVal_980 (Array (_ BitVec 64) (_ BitVec 64))) (|v_ULTIMATE.start_create_~ptr~0#1.base_25| (_ BitVec 64))) (or (forall ((v_ArrVal_984 (_ BitVec 64)) (v_ArrVal_986 (Array (_ BitVec 64) (_ BitVec 64))) (v_ArrVal_985 (Array (_ BitVec 64) (_ BitVec 64)))) (bvule (bvadd (_ bv8 64) (select (select (store (let ((.cse0 (store .cse1 |c_ULTIMATE.start___list_add_~new#1.base| v_ArrVal_979))) (store .cse0 |c_ULTIMATE.start___list_add_~prev#1.base| (store (select .cse0 |c_ULTIMATE.start___list_add_~prev#1.base|) |c_ULTIMATE.start___list_add_~prev#1.offset| |c_ULTIMATE.start___list_add_~new#1.offset|))) |v_ULTIMATE.start_create_~ptr~0#1.base_25| v_ArrVal_985) |c_ULTIMATE.start_create_~head~0#1.base|) .cse2)) (select (store |c_#length| |v_ULTIMATE.start_create_~ptr~0#1.base_25| v_ArrVal_984) (select (select (store (let ((.cse3 (store (store |c_#memory_$Pointer$#0.base| |c_ULTIMATE.start___list_add_~next#1.base| (store (select |c_#memory_$Pointer$#0.base| |c_ULTIMATE.start___list_add_~next#1.base|) .cse4 |c_ULTIMATE.start___list_add_~new#1.base|)) |c_ULTIMATE.start___list_add_~new#1.base| v_ArrVal_980))) (store .cse3 |c_ULTIMATE.start___list_add_~prev#1.base| (store (select .cse3 |c_ULTIMATE.start___list_add_~prev#1.base|) |c_ULTIMATE.start___list_add_~prev#1.offset| v_ArrVal_983))) |v_ULTIMATE.start_create_~ptr~0#1.base_25| v_ArrVal_986) |c_ULTIMATE.start_create_~head~0#1.base|) .cse2)))) (not (= (_ bv0 1) (select |c_#valid| |v_ULTIMATE.start_create_~ptr~0#1.base_25|))))) (forall ((v_ArrVal_979 (Array (_ BitVec 64) (_ BitVec 64))) (|v_ULTIMATE.start_create_~ptr~0#1.base_25| (_ BitVec 64))) (or (not (= (_ bv0 1) (select |c_#valid| |v_ULTIMATE.start_create_~ptr~0#1.base_25|))) (forall ((v_ArrVal_985 (Array (_ BitVec 64) (_ BitVec 64)))) (let ((.cse5 (select (select (store (let ((.cse6 (store .cse1 |c_ULTIMATE.start___list_add_~new#1.base| v_ArrVal_979))) (store .cse6 |c_ULTIMATE.start___list_add_~prev#1.base| (store (select .cse6 |c_ULTIMATE.start___list_add_~prev#1.base|) |c_ULTIMATE.start___list_add_~prev#1.offset| |c_ULTIMATE.start___list_add_~new#1.offset|))) |v_ULTIMATE.start_create_~ptr~0#1.base_25| v_ArrVal_985) |c_ULTIMATE.start_create_~head~0#1.base|) .cse2))) (bvule .cse5 (bvadd (_ bv8 64) .cse5))))))))) is different from false [2024-11-13 15:53:16,004 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse4 (bvadd (_ bv8 64) |c_ULTIMATE.start_list_add_tail_~head#1.offset|))) (let ((.cse1 (store |c_#memory_$Pointer$#0.offset| |c_ULTIMATE.start_list_add_tail_~head#1.base| (store (select |c_#memory_$Pointer$#0.offset| |c_ULTIMATE.start_list_add_tail_~head#1.base|) .cse4 |c_ULTIMATE.start_list_add_tail_~new#1.offset|))) (.cse2 (bvadd (_ bv8 64) |c_ULTIMATE.start_create_~head~0#1.offset|))) (and (forall ((v_ArrVal_983 (_ BitVec 64)) (v_ArrVal_979 (Array (_ BitVec 64) (_ BitVec 64))) (v_ArrVal_980 (Array (_ BitVec 64) (_ BitVec 64))) (|v_ULTIMATE.start_create_~ptr~0#1.base_25| (_ BitVec 64))) (or (forall ((v_ArrVal_984 (_ BitVec 64)) (v_ArrVal_986 (Array (_ BitVec 64) (_ BitVec 64))) (v_ArrVal_985 (Array (_ BitVec 64) (_ BitVec 64)))) (bvule (bvadd (select (select (store (let ((.cse0 (store .cse1 |c_ULTIMATE.start_list_add_tail_~new#1.base| v_ArrVal_979))) (store .cse0 |c_ULTIMATE.start_list_add_tail_#t~mem3#1.base| (store (select .cse0 |c_ULTIMATE.start_list_add_tail_#t~mem3#1.base|) |c_ULTIMATE.start_list_add_tail_#t~mem3#1.offset| |c_ULTIMATE.start_list_add_tail_~new#1.offset|))) |v_ULTIMATE.start_create_~ptr~0#1.base_25| v_ArrVal_985) |c_ULTIMATE.start_create_~head~0#1.base|) .cse2) (_ bv8 64)) (select (store |c_#length| |v_ULTIMATE.start_create_~ptr~0#1.base_25| v_ArrVal_984) (select (select (store (let ((.cse3 (store (store |c_#memory_$Pointer$#0.base| |c_ULTIMATE.start_list_add_tail_~head#1.base| (store (select |c_#memory_$Pointer$#0.base| |c_ULTIMATE.start_list_add_tail_~head#1.base|) .cse4 |c_ULTIMATE.start_list_add_tail_~new#1.base|)) |c_ULTIMATE.start_list_add_tail_~new#1.base| v_ArrVal_980))) (store .cse3 |c_ULTIMATE.start_list_add_tail_#t~mem3#1.base| (store (select .cse3 |c_ULTIMATE.start_list_add_tail_#t~mem3#1.base|) |c_ULTIMATE.start_list_add_tail_#t~mem3#1.offset| v_ArrVal_983))) |v_ULTIMATE.start_create_~ptr~0#1.base_25| v_ArrVal_986) |c_ULTIMATE.start_create_~head~0#1.base|) .cse2)))) (not (= (_ bv0 1) (select |c_#valid| |v_ULTIMATE.start_create_~ptr~0#1.base_25|))))) (forall ((v_ArrVal_979 (Array (_ BitVec 64) (_ BitVec 64))) (|v_ULTIMATE.start_create_~ptr~0#1.base_25| (_ BitVec 64))) (or (forall ((v_ArrVal_985 (Array (_ BitVec 64) (_ BitVec 64)))) (let ((.cse5 (select (select (store (let ((.cse6 (store .cse1 |c_ULTIMATE.start_list_add_tail_~new#1.base| v_ArrVal_979))) (store .cse6 |c_ULTIMATE.start_list_add_tail_#t~mem3#1.base| (store (select .cse6 |c_ULTIMATE.start_list_add_tail_#t~mem3#1.base|) |c_ULTIMATE.start_list_add_tail_#t~mem3#1.offset| |c_ULTIMATE.start_list_add_tail_~new#1.offset|))) |v_ULTIMATE.start_create_~ptr~0#1.base_25| v_ArrVal_985) |c_ULTIMATE.start_create_~head~0#1.base|) .cse2))) (bvule .cse5 (bvadd .cse5 (_ bv8 64))))) (not (= (_ bv0 1) (select |c_#valid| |v_ULTIMATE.start_create_~ptr~0#1.base_25|)))))))) is different from false [2024-11-13 15:53:31,890 WARN L286 SmtUtils]: Spent 6.80s on a formula simplification. DAG size of input: 40 DAG size of output: 35 (called from [L 346] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2024-11-13 15:53:31,891 INFO L349 Elim1Store]: treesize reduction 10, result has 83.6 percent of original size [2024-11-13 15:53:31,891 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 369 treesize of output 411 [2024-11-13 15:53:38,968 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse5 (bvadd (_ bv4 64) |c_ULTIMATE.start_create_~ptr~0#1.offset|)) (.cse4 (bvadd (_ bv8 64) |c_ULTIMATE.start_create_~head~0#1.offset|))) (and (forall ((|v_ULTIMATE.start_create_~ptr~0#1.base_25| (_ BitVec 64))) (or (= |c_ULTIMATE.start_create_~head~0#1.base| |v_ULTIMATE.start_create_~ptr~0#1.base_25|) (forall ((v_ArrVal_985 (Array (_ BitVec 64) (_ BitVec 64))) (v_ArrVal_979 (Array (_ BitVec 64) (_ BitVec 64))) (v_ArrVal_973 (Array (_ BitVec 64) (_ BitVec 64))) (v_ArrVal_972 (Array (_ BitVec 64) (_ BitVec 64)))) (let ((.cse0 (select (select (store (let ((.cse3 (select (store |c_#memory_$Pointer$#0.offset| |c_ULTIMATE.start_create_~ptr~0#1.base| v_ArrVal_973) |c_ULTIMATE.start_create_~head~0#1.base|))) (let ((.cse1 (store (store |c_#memory_$Pointer$#0.offset| |c_ULTIMATE.start_create_~head~0#1.base| (store .cse3 .cse4 .cse5)) |c_ULTIMATE.start_create_~ptr~0#1.base| v_ArrVal_979)) (.cse2 (select (select (store |c_#memory_$Pointer$#0.base| |c_ULTIMATE.start_create_~ptr~0#1.base| v_ArrVal_972) |c_ULTIMATE.start_create_~head~0#1.base|) .cse4))) (store .cse1 .cse2 (store (select .cse1 .cse2) (select .cse3 .cse4) .cse5)))) |v_ULTIMATE.start_create_~ptr~0#1.base_25| v_ArrVal_985) |c_ULTIMATE.start_create_~head~0#1.base|) .cse4))) (bvule .cse0 (bvadd (_ bv8 64) .cse0)))) (= |c_ULTIMATE.start_create_~ptr~0#1.base| |v_ULTIMATE.start_create_~ptr~0#1.base_25|))) (forall ((v_ArrVal_984 (_ BitVec 64)) (v_ArrVal_983 (_ BitVec 64)) (v_ArrVal_986 (Array (_ BitVec 64) (_ BitVec 64))) (v_prenex_3 (_ BitVec 64)) (v_ArrVal_980 (Array (_ BitVec 64) (_ BitVec 64))) (v_prenex_2 (Array (_ BitVec 64) (_ BitVec 64))) (v_prenex_1 (Array (_ BitVec 64) (_ BitVec 64))) (v_prenex_4 (Array (_ BitVec 64) (_ BitVec 64))) (v_prenex_5 (Array (_ BitVec 64) (_ BitVec 64)))) (or (= |c_ULTIMATE.start_create_~head~0#1.base| v_prenex_3) (let ((.cse9 (select (store |c_#memory_$Pointer$#0.offset| |c_ULTIMATE.start_create_~ptr~0#1.base| v_prenex_4) |c_ULTIMATE.start_create_~head~0#1.base|)) (.cse11 (select (store |c_#memory_$Pointer$#0.base| |c_ULTIMATE.start_create_~ptr~0#1.base| v_prenex_5) |c_ULTIMATE.start_create_~head~0#1.base|))) (let ((.cse7 (select .cse11 .cse4)) (.cse8 (select .cse9 .cse4))) (bvule (bvadd (_ bv8 64) (select (select (store (let ((.cse6 (store (store |c_#memory_$Pointer$#0.offset| |c_ULTIMATE.start_create_~head~0#1.base| (store .cse9 .cse4 .cse5)) |c_ULTIMATE.start_create_~ptr~0#1.base| v_prenex_2))) (store .cse6 .cse7 (store (select .cse6 .cse7) .cse8 .cse5))) v_prenex_3 v_prenex_1) |c_ULTIMATE.start_create_~head~0#1.base|) .cse4)) (select (store |c_#length| v_prenex_3 v_ArrVal_984) (select (select (store (let ((.cse10 (store (store |c_#memory_$Pointer$#0.base| |c_ULTIMATE.start_create_~head~0#1.base| (store .cse11 .cse4 |c_ULTIMATE.start_create_~ptr~0#1.base|)) |c_ULTIMATE.start_create_~ptr~0#1.base| v_ArrVal_980))) (store .cse10 .cse7 (store (select .cse10 .cse7) .cse8 v_ArrVal_983))) v_prenex_3 v_ArrVal_986) |c_ULTIMATE.start_create_~head~0#1.base|) .cse4))))) (= |c_ULTIMATE.start_create_~ptr~0#1.base| v_prenex_3))))) is different from false [2024-11-13 15:53:39,114 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 1059 treesize of output 981 [2024-11-13 15:53:55,704 WARN L873 $PredicateComparison]: unable to prove that (let ((.cse4 (bvadd (_ bv8 64) |c_ULTIMATE.start_create_~head~0#1.offset|))) (and (forall ((|v_ULTIMATE.start_create_~ptr~0#1.base_27| (_ BitVec 64))) (or (forall ((v_ArrVal_985 (Array (_ BitVec 64) (_ BitVec 64))) (v_ArrVal_979 (Array (_ BitVec 64) (_ BitVec 64))) (|v_ULTIMATE.start_create_~ptr~0#1.base_25| (_ BitVec 64)) (v_ArrVal_973 (Array (_ BitVec 64) (_ BitVec 64))) (v_ArrVal_972 (Array (_ BitVec 64) (_ BitVec 64)))) (or (let ((.cse0 (select (select (store (let ((.cse3 (select (store |c_#memory_$Pointer$#0.offset| |v_ULTIMATE.start_create_~ptr~0#1.base_27| v_ArrVal_973) |c_ULTIMATE.start_create_~head~0#1.base|))) (let ((.cse1 (store (store |c_#memory_$Pointer$#0.offset| |c_ULTIMATE.start_create_~head~0#1.base| (store .cse3 .cse4 (_ bv4 64))) |v_ULTIMATE.start_create_~ptr~0#1.base_27| v_ArrVal_979)) (.cse2 (select (select (store |c_#memory_$Pointer$#0.base| |v_ULTIMATE.start_create_~ptr~0#1.base_27| v_ArrVal_972) |c_ULTIMATE.start_create_~head~0#1.base|) .cse4))) (store .cse1 .cse2 (store (select .cse1 .cse2) (select .cse3 .cse4) (_ bv4 64))))) |v_ULTIMATE.start_create_~ptr~0#1.base_25| v_ArrVal_985) |c_ULTIMATE.start_create_~head~0#1.base|) .cse4))) (bvule .cse0 (bvadd (_ bv8 64) .cse0))) (= |c_ULTIMATE.start_create_~head~0#1.base| |v_ULTIMATE.start_create_~ptr~0#1.base_25|))) (not (= (_ bv0 1) (select |c_#valid| |v_ULTIMATE.start_create_~ptr~0#1.base_27|))))) (forall ((|v_ULTIMATE.start_create_~ptr~0#1.base_27| (_ BitVec 64))) (or (forall ((v_prenex_3 (_ BitVec 64))) (or (= |c_ULTIMATE.start_create_~head~0#1.base| v_prenex_3) (= v_prenex_3 |v_ULTIMATE.start_create_~ptr~0#1.base_27|) (forall ((v_prenex_2 (Array (_ BitVec 64) (_ BitVec 64))) (v_prenex_1 (Array (_ BitVec 64) (_ BitVec 64))) (v_prenex_4 (Array (_ BitVec 64) (_ BitVec 64))) (v_prenex_5 (Array (_ BitVec 64) (_ BitVec 64)))) (let ((.cse8 (select (store |c_#memory_$Pointer$#0.offset| |v_ULTIMATE.start_create_~ptr~0#1.base_27| v_prenex_4) |c_ULTIMATE.start_create_~head~0#1.base|)) (.cse10 (select (store |c_#memory_$Pointer$#0.base| |v_ULTIMATE.start_create_~ptr~0#1.base_27| v_prenex_5) |c_ULTIMATE.start_create_~head~0#1.base|))) (let ((.cse6 (select .cse10 .cse4)) (.cse7 (select .cse8 .cse4))) (or (= (_ bv0 64) (bvadd (_ bv8 64) (select (select (store (let ((.cse5 (store (store |c_#memory_$Pointer$#0.offset| |c_ULTIMATE.start_create_~head~0#1.base| (store .cse8 .cse4 (_ bv4 64))) |v_ULTIMATE.start_create_~ptr~0#1.base_27| v_prenex_2))) (store .cse5 .cse6 (store (select .cse5 .cse6) .cse7 (_ bv4 64)))) v_prenex_3 v_prenex_1) |c_ULTIMATE.start_create_~head~0#1.base|) .cse4))) (forall ((v_ArrVal_983 (_ BitVec 64)) (v_ArrVal_986 (Array (_ BitVec 64) (_ BitVec 64))) (v_ArrVal_980 (Array (_ BitVec 64) (_ BitVec 64)))) (= (select (select (store (let ((.cse9 (store (store |c_#memory_$Pointer$#0.base| |c_ULTIMATE.start_create_~head~0#1.base| (store .cse10 .cse4 |v_ULTIMATE.start_create_~ptr~0#1.base_27|)) |v_ULTIMATE.start_create_~ptr~0#1.base_27| v_ArrVal_980))) (store .cse9 .cse6 (store (select .cse9 .cse6) .cse7 v_ArrVal_983))) v_prenex_3 v_ArrVal_986) |c_ULTIMATE.start_create_~head~0#1.base|) .cse4) |v_ULTIMATE.start_create_~ptr~0#1.base_27|)))))))) (not (= (_ bv0 1) (select |c_#valid| |v_ULTIMATE.start_create_~ptr~0#1.base_27|))))) (forall ((|v_ULTIMATE.start_create_~ptr~0#1.base_27| (_ BitVec 64))) (or (forall ((v_prenex_3 (_ BitVec 64))) (or (= |c_ULTIMATE.start_create_~head~0#1.base| v_prenex_3) (= v_prenex_3 |v_ULTIMATE.start_create_~ptr~0#1.base_27|) (forall ((v_ArrVal_983 (_ BitVec 64)) (v_ArrVal_986 (Array (_ BitVec 64) (_ BitVec 64))) (v_ArrVal_980 (Array (_ BitVec 64) (_ BitVec 64))) (v_prenex_2 (Array (_ BitVec 64) (_ BitVec 64))) (v_prenex_1 (Array (_ BitVec 64) (_ BitVec 64))) (v_prenex_4 (Array (_ BitVec 64) (_ BitVec 64))) (v_prenex_5 (Array (_ BitVec 64) (_ BitVec 64)))) (let ((.cse16 (select (store |c_#memory_$Pointer$#0.offset| |v_ULTIMATE.start_create_~ptr~0#1.base_27| v_prenex_4) |c_ULTIMATE.start_create_~head~0#1.base|))) (let ((.cse13 (select .cse16 .cse4))) (or (not (= (select (select (store (let ((.cse11 (store (store |c_#memory_$Pointer$#0.base| |c_ULTIMATE.start_create_~head~0#1.base| (store v_prenex_5 .cse4 |v_ULTIMATE.start_create_~ptr~0#1.base_27|)) |v_ULTIMATE.start_create_~ptr~0#1.base_27| v_ArrVal_980)) (.cse12 (select v_prenex_5 .cse4))) (store .cse11 .cse12 (store (select .cse11 .cse12) .cse13 v_ArrVal_983))) v_prenex_3 v_ArrVal_986) |c_ULTIMATE.start_create_~head~0#1.base|) .cse4) |v_ULTIMATE.start_create_~ptr~0#1.base_27|)) (bvule (bvadd (_ bv8 64) (select (select (store (let ((.cse14 (store (store |c_#memory_$Pointer$#0.offset| |c_ULTIMATE.start_create_~head~0#1.base| (store .cse16 .cse4 (_ bv4 64))) |v_ULTIMATE.start_create_~ptr~0#1.base_27| v_prenex_2)) (.cse15 (select (select (store |c_#memory_$Pointer$#0.base| |v_ULTIMATE.start_create_~ptr~0#1.base_27| v_prenex_5) |c_ULTIMATE.start_create_~head~0#1.base|) .cse4))) (store .cse14 .cse15 (store (select .cse14 .cse15) .cse13 (_ bv4 64)))) v_prenex_3 v_prenex_1) |c_ULTIMATE.start_create_~head~0#1.base|) .cse4)) (_ bv20 64)))))))) (not (= (_ bv0 1) (select |c_#valid| |v_ULTIMATE.start_create_~ptr~0#1.base_27|))))) (forall ((|v_ULTIMATE.start_create_~ptr~0#1.base_27| (_ BitVec 64))) (or (forall ((v_prenex_3 (_ BitVec 64))) (or (= |c_ULTIMATE.start_create_~head~0#1.base| v_prenex_3) (= v_prenex_3 |v_ULTIMATE.start_create_~ptr~0#1.base_27|) (forall ((v_prenex_2 (Array (_ BitVec 64) (_ BitVec 64))) (v_prenex_1 (Array (_ BitVec 64) (_ BitVec 64))) (v_prenex_4 (Array (_ BitVec 64) (_ BitVec 64))) (v_prenex_5 (Array (_ BitVec 64) (_ BitVec 64)))) (let ((.cse20 (select (store |c_#memory_$Pointer$#0.offset| |v_ULTIMATE.start_create_~ptr~0#1.base_27| v_prenex_4) |c_ULTIMATE.start_create_~head~0#1.base|))) (let ((.cse19 (select .cse20 .cse4))) (or (bvule (bvadd (_ bv8 64) (select (select (store (let ((.cse17 (store (store |c_#memory_$Pointer$#0.offset| |c_ULTIMATE.start_create_~head~0#1.base| (store .cse20 .cse4 (_ bv4 64))) |v_ULTIMATE.start_create_~ptr~0#1.base_27| v_prenex_2)) (.cse18 (select (select (store |c_#memory_$Pointer$#0.base| |v_ULTIMATE.start_create_~ptr~0#1.base_27| v_prenex_5) |c_ULTIMATE.start_create_~head~0#1.base|) .cse4))) (store .cse17 .cse18 (store (select .cse17 .cse18) .cse19 (_ bv4 64)))) v_prenex_3 v_prenex_1) |c_ULTIMATE.start_create_~head~0#1.base|) .cse4)) (_ bv20 64)) (forall ((v_ArrVal_983 (_ BitVec 64)) (v_ArrVal_986 (Array (_ BitVec 64) (_ BitVec 64))) (v_ArrVal_980 (Array (_ BitVec 64) (_ BitVec 64)))) (= (select (select (store (let ((.cse21 (store (store |c_#memory_$Pointer$#0.base| |c_ULTIMATE.start_create_~head~0#1.base| (store v_prenex_5 .cse4 |v_ULTIMATE.start_create_~ptr~0#1.base_27|)) |v_ULTIMATE.start_create_~ptr~0#1.base_27| v_ArrVal_980)) (.cse22 (select v_prenex_5 .cse4))) (store .cse21 .cse22 (store (select .cse21 .cse22) .cse19 v_ArrVal_983))) v_prenex_3 v_ArrVal_986) |c_ULTIMATE.start_create_~head~0#1.base|) .cse4) v_prenex_3)))))))) (not (= (_ bv0 1) (select |c_#valid| |v_ULTIMATE.start_create_~ptr~0#1.base_27|))))) (forall ((|v_ULTIMATE.start_create_~ptr~0#1.base_27| (_ BitVec 64))) (or (forall ((v_prenex_3 (_ BitVec 64))) (or (= |c_ULTIMATE.start_create_~head~0#1.base| v_prenex_3) (= v_prenex_3 |v_ULTIMATE.start_create_~ptr~0#1.base_27|) (forall ((v_ArrVal_983 (_ BitVec 64)) (v_ArrVal_986 (Array (_ BitVec 64) (_ BitVec 64))) (v_ArrVal_980 (Array (_ BitVec 64) (_ BitVec 64))) (v_prenex_2 (Array (_ BitVec 64) (_ BitVec 64))) (v_prenex_1 (Array (_ BitVec 64) (_ BitVec 64))) (v_prenex_4 (Array (_ BitVec 64) (_ BitVec 64))) (v_prenex_5 (Array (_ BitVec 64) (_ BitVec 64)))) (let ((.cse26 (select (store |c_#memory_$Pointer$#0.offset| |v_ULTIMATE.start_create_~ptr~0#1.base_27| v_prenex_4) |c_ULTIMATE.start_create_~head~0#1.base|)) (.cse28 (select (store |c_#memory_$Pointer$#0.base| |v_ULTIMATE.start_create_~ptr~0#1.base_27| v_prenex_5) |c_ULTIMATE.start_create_~head~0#1.base|))) (let ((.cse24 (select .cse28 .cse4)) (.cse25 (select .cse26 .cse4))) (or (= (_ bv0 64) (bvadd (_ bv8 64) (select (select (store (let ((.cse23 (store (store |c_#memory_$Pointer$#0.offset| |c_ULTIMATE.start_create_~head~0#1.base| (store .cse26 .cse4 (_ bv4 64))) |v_ULTIMATE.start_create_~ptr~0#1.base_27| v_prenex_2))) (store .cse23 .cse24 (store (select .cse23 .cse24) .cse25 (_ bv4 64)))) v_prenex_3 v_prenex_1) |c_ULTIMATE.start_create_~head~0#1.base|) .cse4))) (not (= v_prenex_3 (select (select (store (let ((.cse27 (store (store |c_#memory_$Pointer$#0.base| |c_ULTIMATE.start_create_~head~0#1.base| (store .cse28 .cse4 |v_ULTIMATE.start_create_~ptr~0#1.base_27|)) |v_ULTIMATE.start_create_~ptr~0#1.base_27| v_ArrVal_980))) (store .cse27 .cse24 (store (select .cse27 .cse24) .cse25 v_ArrVal_983))) v_prenex_3 v_ArrVal_986) |c_ULTIMATE.start_create_~head~0#1.base|) .cse4))))))))) (not (= (_ bv0 1) (select |c_#valid| |v_ULTIMATE.start_create_~ptr~0#1.base_27|))))))) is different from true [2024-11-13 15:54:00,667 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-13 15:54:01,012 INFO L349 Elim1Store]: treesize reduction 53, result has 62.4 percent of original size [2024-11-13 15:54:01,013 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 1932 treesize of output 1531 [2024-11-13 15:54:01,164 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-13 15:54:01,164 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 472 treesize of output 452 [2024-11-13 15:54:01,199 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 120 treesize of output 112 [2024-11-13 15:54:01,291 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-13 15:54:01,291 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 1 new quantified variables, introduced 1 case distinctions, treesize of input 284 treesize of output 214 [2024-11-13 15:54:01,309 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 154 treesize of output 122 [2024-11-13 15:54:01,323 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 295 treesize of output 241 [2024-11-13 15:54:01,341 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 132 treesize of output 100 [2024-11-13 15:54:01,486 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-13 15:54:01,486 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-13 15:54:01,515 INFO L349 Elim1Store]: treesize reduction 65, result has 1.5 percent of original size [2024-11-13 15:54:01,515 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 385 treesize of output 1 [2024-11-13 15:54:01,532 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-13 15:54:01,533 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-13 15:54:01,566 INFO L349 Elim1Store]: treesize reduction 45, result has 2.2 percent of original size [2024-11-13 15:54:01,567 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 1206 treesize of output 1 [2024-11-13 15:54:01,582 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-13 15:54:01,583 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-13 15:54:01,614 INFO L349 Elim1Store]: treesize reduction 65, result has 1.5 percent of original size [2024-11-13 15:54:01,615 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 396 treesize of output 1 [2024-11-13 15:54:01,631 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-13 15:54:01,631 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-13 15:54:01,660 INFO L349 Elim1Store]: treesize reduction 45, result has 2.2 percent of original size [2024-11-13 15:54:01,660 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 1157 treesize of output 1 [2024-11-13 15:54:02,329 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 6 not checked. [2024-11-13 15:54:02,329 INFO L136 FreeRefinementEngine]: Strategy FOX found an infeasible trace [2024-11-13 15:54:02,329 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1189484781] [2024-11-13 15:54:02,329 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1189484781] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 15:54:02,329 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-13 15:54:02,330 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 16] total 32 [2024-11-13 15:54:02,330 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [51073071] [2024-11-13 15:54:02,330 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-13 15:54:02,330 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2024-11-13 15:54:02,330 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX [2024-11-13 15:54:02,330 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2024-11-13 15:54:02,331 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=108, Invalid=563, Unknown=7, NotChecked=378, Total=1056 [2024-11-13 15:54:02,331 INFO L87 Difference]: Start difference. First operand 136 states and 155 transitions. Second operand has 33 states, 32 states have (on average 1.65625) internal successors, (53), 33 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:54:08,079 WARN L873 $PredicateComparison]: unable to prove that (let ((.cse14 (select |c_#memory_$Pointer$#0.offset| |c_ULTIMATE.start_create_~head~0#1.base|)) (.cse4 (bvadd (_ bv8 64) |c_ULTIMATE.start_create_~head~0#1.offset|))) (let ((.cse6 (select .cse14 .cse4))) (let ((.cse7 (bvadd (_ bv8 64) .cse6)) (.cse5 (select |c_#memory_$Pointer$#0.base| |c_ULTIMATE.start_create_~head~0#1.base|))) (and (= (_ bv0 64) |c_ULTIMATE.start_create_~head~0#1.offset|) (forall ((|v_ULTIMATE.start_create_~ptr~0#1.base_27| (_ BitVec 64))) (or (forall ((v_ArrVal_985 (Array (_ BitVec 64) (_ BitVec 64))) (v_ArrVal_979 (Array (_ BitVec 64) (_ BitVec 64))) (|v_ULTIMATE.start_create_~ptr~0#1.base_25| (_ BitVec 64)) (v_ArrVal_973 (Array (_ BitVec 64) (_ BitVec 64))) (v_ArrVal_972 (Array (_ BitVec 64) (_ BitVec 64)))) (or (let ((.cse0 (select (select (store (let ((.cse3 (select (store |c_#memory_$Pointer$#0.offset| |v_ULTIMATE.start_create_~ptr~0#1.base_27| v_ArrVal_973) |c_ULTIMATE.start_create_~head~0#1.base|))) (let ((.cse1 (store (store |c_#memory_$Pointer$#0.offset| |c_ULTIMATE.start_create_~head~0#1.base| (store .cse3 .cse4 (_ bv4 64))) |v_ULTIMATE.start_create_~ptr~0#1.base_27| v_ArrVal_979)) (.cse2 (select (select (store |c_#memory_$Pointer$#0.base| |v_ULTIMATE.start_create_~ptr~0#1.base_27| v_ArrVal_972) |c_ULTIMATE.start_create_~head~0#1.base|) .cse4))) (store .cse1 .cse2 (store (select .cse1 .cse2) (select .cse3 .cse4) (_ bv4 64))))) |v_ULTIMATE.start_create_~ptr~0#1.base_25| v_ArrVal_985) |c_ULTIMATE.start_create_~head~0#1.base|) .cse4))) (bvule .cse0 (bvadd (_ bv8 64) .cse0))) (= |c_ULTIMATE.start_create_~head~0#1.base| |v_ULTIMATE.start_create_~ptr~0#1.base_25|))) (not (= (_ bv0 1) (select |c_#valid| |v_ULTIMATE.start_create_~ptr~0#1.base_27|))))) (= |c_ULTIMATE.start_create_~head~0#1.base| (select .cse5 (_ bv8 64))) (bvule .cse6 .cse7) (= (_ bv0 1) (bvadd (_ bv1 1) (select |c_#valid| |c_ULTIMATE.start_create_~head~0#1.base|))) (forall ((|v_ULTIMATE.start_create_~ptr~0#1.base_27| (_ BitVec 64))) (or (forall ((v_prenex_3 (_ BitVec 64))) (or (= |c_ULTIMATE.start_create_~head~0#1.base| v_prenex_3) (= v_prenex_3 |v_ULTIMATE.start_create_~ptr~0#1.base_27|) (forall ((v_prenex_2 (Array (_ BitVec 64) (_ BitVec 64))) (v_prenex_1 (Array (_ BitVec 64) (_ BitVec 64))) (v_prenex_4 (Array (_ BitVec 64) (_ BitVec 64))) (v_prenex_5 (Array (_ BitVec 64) (_ BitVec 64)))) (let ((.cse11 (select (store |c_#memory_$Pointer$#0.offset| |v_ULTIMATE.start_create_~ptr~0#1.base_27| v_prenex_4) |c_ULTIMATE.start_create_~head~0#1.base|)) (.cse13 (select (store |c_#memory_$Pointer$#0.base| |v_ULTIMATE.start_create_~ptr~0#1.base_27| v_prenex_5) |c_ULTIMATE.start_create_~head~0#1.base|))) (let ((.cse9 (select .cse13 .cse4)) (.cse10 (select .cse11 .cse4))) (or (= (_ bv0 64) (bvadd (_ bv8 64) (select (select (store (let ((.cse8 (store (store |c_#memory_$Pointer$#0.offset| |c_ULTIMATE.start_create_~head~0#1.base| (store .cse11 .cse4 (_ bv4 64))) |v_ULTIMATE.start_create_~ptr~0#1.base_27| v_prenex_2))) (store .cse8 .cse9 (store (select .cse8 .cse9) .cse10 (_ bv4 64)))) v_prenex_3 v_prenex_1) |c_ULTIMATE.start_create_~head~0#1.base|) .cse4))) (forall ((v_ArrVal_983 (_ BitVec 64)) (v_ArrVal_986 (Array (_ BitVec 64) (_ BitVec 64))) (v_ArrVal_980 (Array (_ BitVec 64) (_ BitVec 64)))) (= (select (select (store (let ((.cse12 (store (store |c_#memory_$Pointer$#0.base| |c_ULTIMATE.start_create_~head~0#1.base| (store .cse13 .cse4 |v_ULTIMATE.start_create_~ptr~0#1.base_27|)) |v_ULTIMATE.start_create_~ptr~0#1.base_27| v_ArrVal_980))) (store .cse12 .cse9 (store (select .cse12 .cse9) .cse10 v_ArrVal_983))) v_prenex_3 v_ArrVal_986) |c_ULTIMATE.start_create_~head~0#1.base|) .cse4) |v_ULTIMATE.start_create_~ptr~0#1.base_27|)))))))) (not (= (_ bv0 1) (select |c_#valid| |v_ULTIMATE.start_create_~ptr~0#1.base_27|))))) (= (_ bv0 64) (select .cse14 (_ bv8 64))) (bvule .cse7 (select |c_#length| (select .cse5 .cse4))) (forall ((|v_ULTIMATE.start_create_~ptr~0#1.base_27| (_ BitVec 64))) (or (forall ((v_prenex_3 (_ BitVec 64))) (or (= |c_ULTIMATE.start_create_~head~0#1.base| v_prenex_3) (= v_prenex_3 |v_ULTIMATE.start_create_~ptr~0#1.base_27|) (forall ((v_ArrVal_983 (_ BitVec 64)) (v_ArrVal_986 (Array (_ BitVec 64) (_ BitVec 64))) (v_ArrVal_980 (Array (_ BitVec 64) (_ BitVec 64))) (v_prenex_2 (Array (_ BitVec 64) (_ BitVec 64))) (v_prenex_1 (Array (_ BitVec 64) (_ BitVec 64))) (v_prenex_4 (Array (_ BitVec 64) (_ BitVec 64))) (v_prenex_5 (Array (_ BitVec 64) (_ BitVec 64)))) (let ((.cse20 (select (store |c_#memory_$Pointer$#0.offset| |v_ULTIMATE.start_create_~ptr~0#1.base_27| v_prenex_4) |c_ULTIMATE.start_create_~head~0#1.base|))) (let ((.cse17 (select .cse20 .cse4))) (or (not (= (select (select (store (let ((.cse15 (store (store |c_#memory_$Pointer$#0.base| |c_ULTIMATE.start_create_~head~0#1.base| (store v_prenex_5 .cse4 |v_ULTIMATE.start_create_~ptr~0#1.base_27|)) |v_ULTIMATE.start_create_~ptr~0#1.base_27| v_ArrVal_980)) (.cse16 (select v_prenex_5 .cse4))) (store .cse15 .cse16 (store (select .cse15 .cse16) .cse17 v_ArrVal_983))) v_prenex_3 v_ArrVal_986) |c_ULTIMATE.start_create_~head~0#1.base|) .cse4) |v_ULTIMATE.start_create_~ptr~0#1.base_27|)) (bvule (bvadd (_ bv8 64) (select (select (store (let ((.cse18 (store (store |c_#memory_$Pointer$#0.offset| |c_ULTIMATE.start_create_~head~0#1.base| (store .cse20 .cse4 (_ bv4 64))) |v_ULTIMATE.start_create_~ptr~0#1.base_27| v_prenex_2)) (.cse19 (select (select (store |c_#memory_$Pointer$#0.base| |v_ULTIMATE.start_create_~ptr~0#1.base_27| v_prenex_5) |c_ULTIMATE.start_create_~head~0#1.base|) .cse4))) (store .cse18 .cse19 (store (select .cse18 .cse19) .cse17 (_ bv4 64)))) v_prenex_3 v_prenex_1) |c_ULTIMATE.start_create_~head~0#1.base|) .cse4)) (_ bv20 64)))))))) (not (= (_ bv0 1) (select |c_#valid| |v_ULTIMATE.start_create_~ptr~0#1.base_27|))))) (forall ((|v_ULTIMATE.start_create_~ptr~0#1.base_27| (_ BitVec 64))) (or (forall ((v_prenex_3 (_ BitVec 64))) (or (= |c_ULTIMATE.start_create_~head~0#1.base| v_prenex_3) (= v_prenex_3 |v_ULTIMATE.start_create_~ptr~0#1.base_27|) (forall ((v_prenex_2 (Array (_ BitVec 64) (_ BitVec 64))) (v_prenex_1 (Array (_ BitVec 64) (_ BitVec 64))) (v_prenex_4 (Array (_ BitVec 64) (_ BitVec 64))) (v_prenex_5 (Array (_ BitVec 64) (_ BitVec 64)))) (let ((.cse24 (select (store |c_#memory_$Pointer$#0.offset| |v_ULTIMATE.start_create_~ptr~0#1.base_27| v_prenex_4) |c_ULTIMATE.start_create_~head~0#1.base|))) (let ((.cse23 (select .cse24 .cse4))) (or (bvule (bvadd (_ bv8 64) (select (select (store (let ((.cse21 (store (store |c_#memory_$Pointer$#0.offset| |c_ULTIMATE.start_create_~head~0#1.base| (store .cse24 .cse4 (_ bv4 64))) |v_ULTIMATE.start_create_~ptr~0#1.base_27| v_prenex_2)) (.cse22 (select (select (store |c_#memory_$Pointer$#0.base| |v_ULTIMATE.start_create_~ptr~0#1.base_27| v_prenex_5) |c_ULTIMATE.start_create_~head~0#1.base|) .cse4))) (store .cse21 .cse22 (store (select .cse21 .cse22) .cse23 (_ bv4 64)))) v_prenex_3 v_prenex_1) |c_ULTIMATE.start_create_~head~0#1.base|) .cse4)) (_ bv20 64)) (forall ((v_ArrVal_983 (_ BitVec 64)) (v_ArrVal_986 (Array (_ BitVec 64) (_ BitVec 64))) (v_ArrVal_980 (Array (_ BitVec 64) (_ BitVec 64)))) (= (select (select (store (let ((.cse25 (store (store |c_#memory_$Pointer$#0.base| |c_ULTIMATE.start_create_~head~0#1.base| (store v_prenex_5 .cse4 |v_ULTIMATE.start_create_~ptr~0#1.base_27|)) |v_ULTIMATE.start_create_~ptr~0#1.base_27| v_ArrVal_980)) (.cse26 (select v_prenex_5 .cse4))) (store .cse25 .cse26 (store (select .cse25 .cse26) .cse23 v_ArrVal_983))) v_prenex_3 v_ArrVal_986) |c_ULTIMATE.start_create_~head~0#1.base|) .cse4) v_prenex_3)))))))) (not (= (_ bv0 1) (select |c_#valid| |v_ULTIMATE.start_create_~ptr~0#1.base_27|))))) (forall ((|v_ULTIMATE.start_create_~ptr~0#1.base_27| (_ BitVec 64))) (or (forall ((v_prenex_3 (_ BitVec 64))) (or (= |c_ULTIMATE.start_create_~head~0#1.base| v_prenex_3) (= v_prenex_3 |v_ULTIMATE.start_create_~ptr~0#1.base_27|) (forall ((v_ArrVal_983 (_ BitVec 64)) (v_ArrVal_986 (Array (_ BitVec 64) (_ BitVec 64))) (v_ArrVal_980 (Array (_ BitVec 64) (_ BitVec 64))) (v_prenex_2 (Array (_ BitVec 64) (_ BitVec 64))) (v_prenex_1 (Array (_ BitVec 64) (_ BitVec 64))) (v_prenex_4 (Array (_ BitVec 64) (_ BitVec 64))) (v_prenex_5 (Array (_ BitVec 64) (_ BitVec 64)))) (let ((.cse30 (select (store |c_#memory_$Pointer$#0.offset| |v_ULTIMATE.start_create_~ptr~0#1.base_27| v_prenex_4) |c_ULTIMATE.start_create_~head~0#1.base|)) (.cse32 (select (store |c_#memory_$Pointer$#0.base| |v_ULTIMATE.start_create_~ptr~0#1.base_27| v_prenex_5) |c_ULTIMATE.start_create_~head~0#1.base|))) (let ((.cse28 (select .cse32 .cse4)) (.cse29 (select .cse30 .cse4))) (or (= (_ bv0 64) (bvadd (_ bv8 64) (select (select (store (let ((.cse27 (store (store |c_#memory_$Pointer$#0.offset| |c_ULTIMATE.start_create_~head~0#1.base| (store .cse30 .cse4 (_ bv4 64))) |v_ULTIMATE.start_create_~ptr~0#1.base_27| v_prenex_2))) (store .cse27 .cse28 (store (select .cse27 .cse28) .cse29 (_ bv4 64)))) v_prenex_3 v_prenex_1) |c_ULTIMATE.start_create_~head~0#1.base|) .cse4))) (not (= v_prenex_3 (select (select (store (let ((.cse31 (store (store |c_#memory_$Pointer$#0.base| |c_ULTIMATE.start_create_~head~0#1.base| (store .cse32 .cse4 |v_ULTIMATE.start_create_~ptr~0#1.base_27|)) |v_ULTIMATE.start_create_~ptr~0#1.base_27| v_ArrVal_980))) (store .cse31 .cse28 (store (select .cse31 .cse28) .cse29 v_ArrVal_983))) v_prenex_3 v_ArrVal_986) |c_ULTIMATE.start_create_~head~0#1.base|) .cse4))))))))) (not (= (_ bv0 1) (select |c_#valid| |v_ULTIMATE.start_create_~ptr~0#1.base_27|))))))))) is different from true [2024-11-13 15:54:12,104 WARN L873 $PredicateComparison]: unable to prove that (let ((.cse4 (bvadd (_ bv8 64) |c_ULTIMATE.start_create_~head~0#1.offset|))) (and (= (_ bv0 64) |c_ULTIMATE.start_create_~head~0#1.offset|) (forall ((|v_ULTIMATE.start_create_~ptr~0#1.base_27| (_ BitVec 64))) (or (forall ((v_ArrVal_985 (Array (_ BitVec 64) (_ BitVec 64))) (v_ArrVal_979 (Array (_ BitVec 64) (_ BitVec 64))) (|v_ULTIMATE.start_create_~ptr~0#1.base_25| (_ BitVec 64)) (v_ArrVal_973 (Array (_ BitVec 64) (_ BitVec 64))) (v_ArrVal_972 (Array (_ BitVec 64) (_ BitVec 64)))) (or (let ((.cse0 (select (select (store (let ((.cse3 (select (store |c_#memory_$Pointer$#0.offset| |v_ULTIMATE.start_create_~ptr~0#1.base_27| v_ArrVal_973) |c_ULTIMATE.start_create_~head~0#1.base|))) (let ((.cse1 (store (store |c_#memory_$Pointer$#0.offset| |c_ULTIMATE.start_create_~head~0#1.base| (store .cse3 .cse4 (_ bv4 64))) |v_ULTIMATE.start_create_~ptr~0#1.base_27| v_ArrVal_979)) (.cse2 (select (select (store |c_#memory_$Pointer$#0.base| |v_ULTIMATE.start_create_~ptr~0#1.base_27| v_ArrVal_972) |c_ULTIMATE.start_create_~head~0#1.base|) .cse4))) (store .cse1 .cse2 (store (select .cse1 .cse2) (select .cse3 .cse4) (_ bv4 64))))) |v_ULTIMATE.start_create_~ptr~0#1.base_25| v_ArrVal_985) |c_ULTIMATE.start_create_~head~0#1.base|) .cse4))) (bvule .cse0 (bvadd (_ bv8 64) .cse0))) (= |c_ULTIMATE.start_create_~head~0#1.base| |v_ULTIMATE.start_create_~ptr~0#1.base_25|))) (not (= (_ bv0 1) (select |c_#valid| |v_ULTIMATE.start_create_~ptr~0#1.base_27|))))) (= |c_ULTIMATE.start_create_~head~0#1.base| (select (select |c_#memory_$Pointer$#0.base| |c_ULTIMATE.start_create_~head~0#1.base|) (_ bv8 64))) (= (_ bv0 1) (bvadd (_ bv1 1) (select |c_#valid| |c_ULTIMATE.start_create_~head~0#1.base|))) (forall ((|v_ULTIMATE.start_create_~ptr~0#1.base_27| (_ BitVec 64))) (or (forall ((v_prenex_3 (_ BitVec 64))) (or (= |c_ULTIMATE.start_create_~head~0#1.base| v_prenex_3) (= v_prenex_3 |v_ULTIMATE.start_create_~ptr~0#1.base_27|) (forall ((v_prenex_2 (Array (_ BitVec 64) (_ BitVec 64))) (v_prenex_1 (Array (_ BitVec 64) (_ BitVec 64))) (v_prenex_4 (Array (_ BitVec 64) (_ BitVec 64))) (v_prenex_5 (Array (_ BitVec 64) (_ BitVec 64)))) (let ((.cse8 (select (store |c_#memory_$Pointer$#0.offset| |v_ULTIMATE.start_create_~ptr~0#1.base_27| v_prenex_4) |c_ULTIMATE.start_create_~head~0#1.base|)) (.cse10 (select (store |c_#memory_$Pointer$#0.base| |v_ULTIMATE.start_create_~ptr~0#1.base_27| v_prenex_5) |c_ULTIMATE.start_create_~head~0#1.base|))) (let ((.cse6 (select .cse10 .cse4)) (.cse7 (select .cse8 .cse4))) (or (= (_ bv0 64) (bvadd (_ bv8 64) (select (select (store (let ((.cse5 (store (store |c_#memory_$Pointer$#0.offset| |c_ULTIMATE.start_create_~head~0#1.base| (store .cse8 .cse4 (_ bv4 64))) |v_ULTIMATE.start_create_~ptr~0#1.base_27| v_prenex_2))) (store .cse5 .cse6 (store (select .cse5 .cse6) .cse7 (_ bv4 64)))) v_prenex_3 v_prenex_1) |c_ULTIMATE.start_create_~head~0#1.base|) .cse4))) (forall ((v_ArrVal_983 (_ BitVec 64)) (v_ArrVal_986 (Array (_ BitVec 64) (_ BitVec 64))) (v_ArrVal_980 (Array (_ BitVec 64) (_ BitVec 64)))) (= (select (select (store (let ((.cse9 (store (store |c_#memory_$Pointer$#0.base| |c_ULTIMATE.start_create_~head~0#1.base| (store .cse10 .cse4 |v_ULTIMATE.start_create_~ptr~0#1.base_27|)) |v_ULTIMATE.start_create_~ptr~0#1.base_27| v_ArrVal_980))) (store .cse9 .cse6 (store (select .cse9 .cse6) .cse7 v_ArrVal_983))) v_prenex_3 v_ArrVal_986) |c_ULTIMATE.start_create_~head~0#1.base|) .cse4) |v_ULTIMATE.start_create_~ptr~0#1.base_27|)))))))) (not (= (_ bv0 1) (select |c_#valid| |v_ULTIMATE.start_create_~ptr~0#1.base_27|))))) (= (_ bv0 64) (select (select |c_#memory_$Pointer$#0.offset| |c_ULTIMATE.start_create_~head~0#1.base|) (_ bv8 64))) (forall ((|v_ULTIMATE.start_create_~ptr~0#1.base_27| (_ BitVec 64))) (or (forall ((v_prenex_3 (_ BitVec 64))) (or (= |c_ULTIMATE.start_create_~head~0#1.base| v_prenex_3) (= v_prenex_3 |v_ULTIMATE.start_create_~ptr~0#1.base_27|) (forall ((v_ArrVal_983 (_ BitVec 64)) (v_ArrVal_986 (Array (_ BitVec 64) (_ BitVec 64))) (v_ArrVal_980 (Array (_ BitVec 64) (_ BitVec 64))) (v_prenex_2 (Array (_ BitVec 64) (_ BitVec 64))) (v_prenex_1 (Array (_ BitVec 64) (_ BitVec 64))) (v_prenex_4 (Array (_ BitVec 64) (_ BitVec 64))) (v_prenex_5 (Array (_ BitVec 64) (_ BitVec 64)))) (let ((.cse16 (select (store |c_#memory_$Pointer$#0.offset| |v_ULTIMATE.start_create_~ptr~0#1.base_27| v_prenex_4) |c_ULTIMATE.start_create_~head~0#1.base|))) (let ((.cse13 (select .cse16 .cse4))) (or (not (= (select (select (store (let ((.cse11 (store (store |c_#memory_$Pointer$#0.base| |c_ULTIMATE.start_create_~head~0#1.base| (store v_prenex_5 .cse4 |v_ULTIMATE.start_create_~ptr~0#1.base_27|)) |v_ULTIMATE.start_create_~ptr~0#1.base_27| v_ArrVal_980)) (.cse12 (select v_prenex_5 .cse4))) (store .cse11 .cse12 (store (select .cse11 .cse12) .cse13 v_ArrVal_983))) v_prenex_3 v_ArrVal_986) |c_ULTIMATE.start_create_~head~0#1.base|) .cse4) |v_ULTIMATE.start_create_~ptr~0#1.base_27|)) (bvule (bvadd (_ bv8 64) (select (select (store (let ((.cse14 (store (store |c_#memory_$Pointer$#0.offset| |c_ULTIMATE.start_create_~head~0#1.base| (store .cse16 .cse4 (_ bv4 64))) |v_ULTIMATE.start_create_~ptr~0#1.base_27| v_prenex_2)) (.cse15 (select (select (store |c_#memory_$Pointer$#0.base| |v_ULTIMATE.start_create_~ptr~0#1.base_27| v_prenex_5) |c_ULTIMATE.start_create_~head~0#1.base|) .cse4))) (store .cse14 .cse15 (store (select .cse14 .cse15) .cse13 (_ bv4 64)))) v_prenex_3 v_prenex_1) |c_ULTIMATE.start_create_~head~0#1.base|) .cse4)) (_ bv20 64)))))))) (not (= (_ bv0 1) (select |c_#valid| |v_ULTIMATE.start_create_~ptr~0#1.base_27|))))) (forall ((|v_ULTIMATE.start_create_~ptr~0#1.base_27| (_ BitVec 64))) (or (forall ((v_prenex_3 (_ BitVec 64))) (or (= |c_ULTIMATE.start_create_~head~0#1.base| v_prenex_3) (= v_prenex_3 |v_ULTIMATE.start_create_~ptr~0#1.base_27|) (forall ((v_prenex_2 (Array (_ BitVec 64) (_ BitVec 64))) (v_prenex_1 (Array (_ BitVec 64) (_ BitVec 64))) (v_prenex_4 (Array (_ BitVec 64) (_ BitVec 64))) (v_prenex_5 (Array (_ BitVec 64) (_ BitVec 64)))) (let ((.cse20 (select (store |c_#memory_$Pointer$#0.offset| |v_ULTIMATE.start_create_~ptr~0#1.base_27| v_prenex_4) |c_ULTIMATE.start_create_~head~0#1.base|))) (let ((.cse19 (select .cse20 .cse4))) (or (bvule (bvadd (_ bv8 64) (select (select (store (let ((.cse17 (store (store |c_#memory_$Pointer$#0.offset| |c_ULTIMATE.start_create_~head~0#1.base| (store .cse20 .cse4 (_ bv4 64))) |v_ULTIMATE.start_create_~ptr~0#1.base_27| v_prenex_2)) (.cse18 (select (select (store |c_#memory_$Pointer$#0.base| |v_ULTIMATE.start_create_~ptr~0#1.base_27| v_prenex_5) |c_ULTIMATE.start_create_~head~0#1.base|) .cse4))) (store .cse17 .cse18 (store (select .cse17 .cse18) .cse19 (_ bv4 64)))) v_prenex_3 v_prenex_1) |c_ULTIMATE.start_create_~head~0#1.base|) .cse4)) (_ bv20 64)) (forall ((v_ArrVal_983 (_ BitVec 64)) (v_ArrVal_986 (Array (_ BitVec 64) (_ BitVec 64))) (v_ArrVal_980 (Array (_ BitVec 64) (_ BitVec 64)))) (= (select (select (store (let ((.cse21 (store (store |c_#memory_$Pointer$#0.base| |c_ULTIMATE.start_create_~head~0#1.base| (store v_prenex_5 .cse4 |v_ULTIMATE.start_create_~ptr~0#1.base_27|)) |v_ULTIMATE.start_create_~ptr~0#1.base_27| v_ArrVal_980)) (.cse22 (select v_prenex_5 .cse4))) (store .cse21 .cse22 (store (select .cse21 .cse22) .cse19 v_ArrVal_983))) v_prenex_3 v_ArrVal_986) |c_ULTIMATE.start_create_~head~0#1.base|) .cse4) v_prenex_3)))))))) (not (= (_ bv0 1) (select |c_#valid| |v_ULTIMATE.start_create_~ptr~0#1.base_27|))))) (forall ((|v_ULTIMATE.start_create_~ptr~0#1.base_27| (_ BitVec 64))) (or (forall ((v_prenex_3 (_ BitVec 64))) (or (= |c_ULTIMATE.start_create_~head~0#1.base| v_prenex_3) (= v_prenex_3 |v_ULTIMATE.start_create_~ptr~0#1.base_27|) (forall ((v_ArrVal_983 (_ BitVec 64)) (v_ArrVal_986 (Array (_ BitVec 64) (_ BitVec 64))) (v_ArrVal_980 (Array (_ BitVec 64) (_ BitVec 64))) (v_prenex_2 (Array (_ BitVec 64) (_ BitVec 64))) (v_prenex_1 (Array (_ BitVec 64) (_ BitVec 64))) (v_prenex_4 (Array (_ BitVec 64) (_ BitVec 64))) (v_prenex_5 (Array (_ BitVec 64) (_ BitVec 64)))) (let ((.cse26 (select (store |c_#memory_$Pointer$#0.offset| |v_ULTIMATE.start_create_~ptr~0#1.base_27| v_prenex_4) |c_ULTIMATE.start_create_~head~0#1.base|)) (.cse28 (select (store |c_#memory_$Pointer$#0.base| |v_ULTIMATE.start_create_~ptr~0#1.base_27| v_prenex_5) |c_ULTIMATE.start_create_~head~0#1.base|))) (let ((.cse24 (select .cse28 .cse4)) (.cse25 (select .cse26 .cse4))) (or (= (_ bv0 64) (bvadd (_ bv8 64) (select (select (store (let ((.cse23 (store (store |c_#memory_$Pointer$#0.offset| |c_ULTIMATE.start_create_~head~0#1.base| (store .cse26 .cse4 (_ bv4 64))) |v_ULTIMATE.start_create_~ptr~0#1.base_27| v_prenex_2))) (store .cse23 .cse24 (store (select .cse23 .cse24) .cse25 (_ bv4 64)))) v_prenex_3 v_prenex_1) |c_ULTIMATE.start_create_~head~0#1.base|) .cse4))) (not (= v_prenex_3 (select (select (store (let ((.cse27 (store (store |c_#memory_$Pointer$#0.base| |c_ULTIMATE.start_create_~head~0#1.base| (store .cse28 .cse4 |v_ULTIMATE.start_create_~ptr~0#1.base_27|)) |v_ULTIMATE.start_create_~ptr~0#1.base_27| v_ArrVal_980))) (store .cse27 .cse24 (store (select .cse27 .cse24) .cse25 v_ArrVal_983))) v_prenex_3 v_ArrVal_986) |c_ULTIMATE.start_create_~head~0#1.base|) .cse4))))))))) (not (= (_ bv0 1) (select |c_#valid| |v_ULTIMATE.start_create_~ptr~0#1.base_27|))))))) is different from true [2024-11-13 15:54:14,165 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.12s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-13 15:54:41,457 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.92s for a HTC check with result VALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-13 15:54:45,461 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.75s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-13 15:55:05,628 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.10s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-13 15:55:27,377 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.35s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-13 15:55:57,275 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.16s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-13 15:56:02,755 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.14s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-13 15:56:05,221 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.41s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-13 15:56:09,595 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-13 15:56:14,946 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.85s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-13 15:56:19,573 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-13 15:56:24,272 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-13 15:56:28,584 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-13 15:56:30,437 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.85s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-13 15:56:35,024 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-13 15:56:38,489 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.31s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-13 15:56:59,778 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2024-11-13 15:57:24,097 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] [2024-11-13 15:58:08,568 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 15:58:08,568 INFO L93 Difference]: Finished difference Result 136 states and 153 transitions. [2024-11-13 15:58:08,569 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2024-11-13 15:58:08,569 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 32 states have (on average 1.65625) internal successors, (53), 33 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2024-11-13 15:58:08,569 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 15:58:08,570 INFO L225 Difference]: With dead ends: 136 [2024-11-13 15:58:08,570 INFO L226 Difference]: Without dead ends: 136 [2024-11-13 15:58:08,570 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 21 SyntacticMatches, 4 SemanticMatches, 49 ConstructedPredicates, 9 IntricatePredicates, 0 DeprecatedPredicates, 403 ImplicationChecksByTransitivity, 152.3s TimeCoverageRelationStatistics Valid=289, Invalid=1439, Unknown=30, NotChecked=792, Total=2550 [2024-11-13 15:58:08,571 INFO L432 NwaCegarLoop]: 62 mSDtfsCounter, 71 mSDsluCounter, 528 mSDsCounter, 0 mSdLazyCounter, 555 mSolverCounterSat, 18 mSolverCounterUnsat, 30 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 116.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 71 SdHoareTripleChecker+Valid, 590 SdHoareTripleChecker+Invalid, 1280 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 555 IncrementalHoareTripleChecker+Invalid, 30 IncrementalHoareTripleChecker+Unknown, 677 IncrementalHoareTripleChecker+Unchecked, 118.5s IncrementalHoareTripleChecker+Time [2024-11-13 15:58:08,571 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [71 Valid, 590 Invalid, 1280 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 555 Invalid, 30 Unknown, 677 Unchecked, 118.5s Time] [2024-11-13 15:58:08,572 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136 states. [2024-11-13 15:58:08,575 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136 to 136. [2024-11-13 15:58:08,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 136 states, 114 states have (on average 1.3421052631578947) internal successors, (153), 135 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:58:08,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136 states to 136 states and 153 transitions. [2024-11-13 15:58:08,576 INFO L78 Accepts]: Start accepts. Automaton has 136 states and 153 transitions. Word has length 27 [2024-11-13 15:58:08,576 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 15:58:08,576 INFO L471 AbstractCegarLoop]: Abstraction has 136 states and 153 transitions. [2024-11-13 15:58:08,576 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 32 states have (on average 1.65625) internal successors, (53), 33 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:58:08,577 INFO L276 IsEmpty]: Start isEmpty. Operand 136 states and 153 transitions. [2024-11-13 15:58:08,577 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2024-11-13 15:58:08,577 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 15:58:08,577 INFO L215 NwaCegarLoop]: trace histogram [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, 1, 1] [2024-11-13 15:58:08,604 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba1c47ce-3c5d-48a4-a296-5baeabe11678/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Ended with exit code 0 [2024-11-13 15:58:08,781 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba1c47ce-3c5d-48a4-a296-5baeabe11678/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:58:08,782 INFO L396 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr18REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 42 more)] === [2024-11-13 15:58:08,782 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:58:08,782 INFO L85 PathProgramCache]: Analyzing trace with hash 1950530718, now seen corresponding path program 1 times [2024-11-13 15:58:08,783 INFO L118 FreeRefinementEngine]: Executing refinement strategy FOX [2024-11-13 15:58:08,783 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [864630665] [2024-11-13 15:58:08,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:58:08,783 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 15:58:08,783 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba1c47ce-3c5d-48a4-a296-5baeabe11678/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 15:58:08,784 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba1c47ce-3c5d-48a4-a296-5baeabe11678/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 15:58:08,785 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ba1c47ce-3c5d-48a4-a296-5baeabe11678/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Waiting until timeout for monitored process [2024-11-13 15:58:08,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:58:08,995 INFO L255 TraceCheckSpWp]: Trace formula consists of 192 conjuncts, 61 conjuncts are in the unsatisfiable core [2024-11-13 15:58:08,999 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 15:58:10,000 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-13 15:58:10,300 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-13 15:58:12,433 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2024-11-13 15:58:12,433 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2024-11-13 15:58:12,616 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2024-11-13 15:58:13,735 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 [2024-11-13 15:58:13,923 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 [2024-11-13 15:58:16,535 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2024-11-13 15:58:16,808 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2024-11-13 15:58:21,854 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-13 15:58:24,107 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2024-11-13 15:58:24,297 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-13 15:58:24,659 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 15 [2024-11-13 15:58:32,321 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 [2024-11-13 15:58:37,719 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-13 15:58:37,720 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 40 treesize of output 19 [2024-11-13 15:58:37,832 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2024-11-13 15:58:40,543 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 15:58:40,543 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 15:58:53,843 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 184 treesize of output 168 [2024-11-13 15:59:13,959 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-13 15:59:16,511 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-13 15:59:16,512 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 6 case distinctions, treesize of input 1462 treesize of output 1443