./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test10-3.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 527bcce2 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae1cb0fb-ace2-489e-89e1-d56fafa3d0ad/bin/uautomizer-verify-bycVGegfSx/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae1cb0fb-ace2-489e-89e1-d56fafa3d0ad/bin/uautomizer-verify-bycVGegfSx/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae1cb0fb-ace2-489e-89e1-d56fafa3d0ad/bin/uautomizer-verify-bycVGegfSx/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae1cb0fb-ace2-489e-89e1-d56fafa3d0ad/bin/uautomizer-verify-bycVGegfSx/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test10-3.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae1cb0fb-ace2-489e-89e1-d56fafa3d0ad/bin/uautomizer-verify-bycVGegfSx/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae1cb0fb-ace2-489e-89e1-d56fafa3d0ad/bin/uautomizer-verify-bycVGegfSx --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash c9492eb5ff634b400a7a5ea3f7f2cefeb5465f9e5361bb81d240cec0c0c035af --- Real Ultimate output --- This is Ultimate 0.2.3-dev-527bcce [2023-11-21 22:24:22,230 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-21 22:24:22,309 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae1cb0fb-ace2-489e-89e1-d56fafa3d0ad/bin/uautomizer-verify-bycVGegfSx/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2023-11-21 22:24:22,316 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-21 22:24:22,317 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-21 22:24:22,348 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-21 22:24:22,353 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-21 22:24:22,354 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-21 22:24:22,355 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-21 22:24:22,361 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-21 22:24:22,362 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-21 22:24:22,363 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-21 22:24:22,364 INFO L153 SettingsManager]: * Use SBE=true [2023-11-21 22:24:22,366 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-21 22:24:22,366 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-21 22:24:22,367 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-21 22:24:22,367 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-21 22:24:22,368 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-21 22:24:22,368 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-21 22:24:22,369 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-21 22:24:22,370 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-21 22:24:22,371 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-21 22:24:22,372 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-21 22:24:22,373 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-21 22:24:22,374 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-21 22:24:22,374 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-21 22:24:22,375 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-21 22:24:22,376 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-21 22:24:22,376 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-21 22:24:22,377 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-21 22:24:22,378 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-21 22:24:22,379 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-21 22:24:22,379 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-21 22:24:22,379 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-21 22:24:22,380 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-21 22:24:22,380 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-21 22:24:22,380 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-21 22:24:22,381 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-21 22:24:22,381 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-21 22:24:22,381 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae1cb0fb-ace2-489e-89e1-d56fafa3d0ad/bin/uautomizer-verify-bycVGegfSx/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae1cb0fb-ace2-489e-89e1-d56fafa3d0ad/bin/uautomizer-verify-bycVGegfSx Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c9492eb5ff634b400a7a5ea3f7f2cefeb5465f9e5361bb81d240cec0c0c035af [2023-11-21 22:24:22,705 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-21 22:24:22,741 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-21 22:24:22,745 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-21 22:24:22,747 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-21 22:24:22,748 INFO L274 PluginConnector]: CDTParser initialized [2023-11-21 22:24:22,750 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae1cb0fb-ace2-489e-89e1-d56fafa3d0ad/bin/uautomizer-verify-bycVGegfSx/../../sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test10-3.i [2023-11-21 22:24:26,011 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-21 22:24:26,453 INFO L384 CDTParser]: Found 1 translation units. [2023-11-21 22:24:26,457 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae1cb0fb-ace2-489e-89e1-d56fafa3d0ad/sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test10-3.i [2023-11-21 22:24:26,488 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae1cb0fb-ace2-489e-89e1-d56fafa3d0ad/bin/uautomizer-verify-bycVGegfSx/data/9ed252806/df51ab4244614bb6a2c3680c63e58dbb/FLAG64e231307 [2023-11-21 22:24:26,513 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae1cb0fb-ace2-489e-89e1-d56fafa3d0ad/bin/uautomizer-verify-bycVGegfSx/data/9ed252806/df51ab4244614bb6a2c3680c63e58dbb [2023-11-21 22:24:26,519 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-21 22:24:26,522 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-21 22:24:26,528 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-21 22:24:26,528 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-21 22:24:26,533 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-21 22:24:26,534 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 10:24:26" (1/1) ... [2023-11-21 22:24:26,537 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6962561b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:24:26, skipping insertion in model container [2023-11-21 22:24:26,537 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 10:24:26" (1/1) ... [2023-11-21 22:24:26,633 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-21 22:24:27,476 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-21 22:24:27,489 ERROR L324 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) [2023-11-21 22:24:27,490 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@772ae136 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:24:27, skipping insertion in model container [2023-11-21 22:24:27,490 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-21 22:24:27,492 INFO L186 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2023-11-21 22:24:27,494 INFO L158 Benchmark]: Toolchain (without parser) took 970.55ms. Allocated memory is still 180.4MB. Free memory was 145.3MB in the beginning and 114.7MB in the end (delta: 30.6MB). Peak memory consumption was 29.4MB. Max. memory is 16.1GB. [2023-11-21 22:24:27,495 INFO L158 Benchmark]: CDTParser took 0.34ms. Allocated memory is still 134.2MB. Free memory was 80.1MB in the beginning and 80.0MB in the end (delta: 125.9kB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-21 22:24:27,496 INFO L158 Benchmark]: CACSL2BoogieTranslator took 963.74ms. Allocated memory is still 180.4MB. Free memory was 145.3MB in the beginning and 114.7MB in the end (delta: 30.6MB). Peak memory consumption was 29.4MB. Max. memory is 16.1GB. [2023-11-21 22:24:27,497 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.34ms. Allocated memory is still 134.2MB. Free memory was 80.1MB in the beginning and 80.0MB in the end (delta: 125.9kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 963.74ms. Allocated memory is still 180.4MB. Free memory was 145.3MB in the beginning and 114.7MB in the end (delta: 30.6MB). Peak memory consumption was 29.4MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 734]: 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/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae1cb0fb-ace2-489e-89e1-d56fafa3d0ad/bin/uautomizer-verify-bycVGegfSx/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae1cb0fb-ace2-489e-89e1-d56fafa3d0ad/bin/uautomizer-verify-bycVGegfSx/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae1cb0fb-ace2-489e-89e1-d56fafa3d0ad/bin/uautomizer-verify-bycVGegfSx/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae1cb0fb-ace2-489e-89e1-d56fafa3d0ad/bin/uautomizer-verify-bycVGegfSx/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test10-3.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae1cb0fb-ace2-489e-89e1-d56fafa3d0ad/bin/uautomizer-verify-bycVGegfSx/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae1cb0fb-ace2-489e-89e1-d56fafa3d0ad/bin/uautomizer-verify-bycVGegfSx --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash c9492eb5ff634b400a7a5ea3f7f2cefeb5465f9e5361bb81d240cec0c0c035af --- Real Ultimate output --- This is Ultimate 0.2.3-dev-527bcce [2023-11-21 22:24:30,023 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-21 22:24:30,164 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae1cb0fb-ace2-489e-89e1-d56fafa3d0ad/bin/uautomizer-verify-bycVGegfSx/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2023-11-21 22:24:30,173 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-21 22:24:30,174 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-21 22:24:30,219 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-21 22:24:30,220 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-21 22:24:30,221 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-21 22:24:30,222 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-21 22:24:30,227 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-21 22:24:30,228 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-21 22:24:30,228 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-21 22:24:30,229 INFO L153 SettingsManager]: * Use SBE=true [2023-11-21 22:24:30,231 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-21 22:24:30,231 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-21 22:24:30,232 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-21 22:24:30,232 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-21 22:24:30,233 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-21 22:24:30,233 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-21 22:24:30,234 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-21 22:24:30,235 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-21 22:24:30,235 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-21 22:24:30,236 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-21 22:24:30,236 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-11-21 22:24:30,237 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-11-21 22:24:30,237 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-21 22:24:30,238 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-21 22:24:30,238 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-21 22:24:30,239 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-21 22:24:30,240 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-21 22:24:30,241 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-21 22:24:30,241 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-21 22:24:30,241 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-21 22:24:30,242 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-21 22:24:30,242 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-21 22:24:30,243 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2023-11-21 22:24:30,243 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-11-21 22:24:30,243 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-21 22:24:30,244 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-21 22:24:30,245 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-21 22:24:30,245 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-21 22:24:30,245 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2023-11-21 22:24:30,246 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae1cb0fb-ace2-489e-89e1-d56fafa3d0ad/bin/uautomizer-verify-bycVGegfSx/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae1cb0fb-ace2-489e-89e1-d56fafa3d0ad/bin/uautomizer-verify-bycVGegfSx Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c9492eb5ff634b400a7a5ea3f7f2cefeb5465f9e5361bb81d240cec0c0c035af [2023-11-21 22:24:30,692 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-21 22:24:30,714 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-21 22:24:30,717 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-21 22:24:30,719 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-21 22:24:30,719 INFO L274 PluginConnector]: CDTParser initialized [2023-11-21 22:24:30,721 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae1cb0fb-ace2-489e-89e1-d56fafa3d0ad/bin/uautomizer-verify-bycVGegfSx/../../sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test10-3.i [2023-11-21 22:24:33,938 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-21 22:24:34,442 INFO L384 CDTParser]: Found 1 translation units. [2023-11-21 22:24:34,442 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae1cb0fb-ace2-489e-89e1-d56fafa3d0ad/sv-benchmarks/c/uthash-2.0.2/uthash_JEN_test10-3.i [2023-11-21 22:24:34,471 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae1cb0fb-ace2-489e-89e1-d56fafa3d0ad/bin/uautomizer-verify-bycVGegfSx/data/890acc182/541d4a1e4d1647ceac933d3ad3941a6a/FLAGe148dd0c8 [2023-11-21 22:24:34,489 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae1cb0fb-ace2-489e-89e1-d56fafa3d0ad/bin/uautomizer-verify-bycVGegfSx/data/890acc182/541d4a1e4d1647ceac933d3ad3941a6a [2023-11-21 22:24:34,494 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-21 22:24:34,496 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-21 22:24:34,499 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-21 22:24:34,500 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-21 22:24:34,505 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-21 22:24:34,506 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 10:24:34" (1/1) ... [2023-11-21 22:24:34,507 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3eb64973 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:24:34, skipping insertion in model container [2023-11-21 22:24:34,507 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 10:24:34" (1/1) ... [2023-11-21 22:24:34,596 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-21 22:24:35,527 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-21 22:24:35,545 INFO L199 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2023-11-21 22:24:35,572 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-21 22:24:35,782 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-21 22:24:35,786 INFO L202 MainTranslator]: Completed pre-run [2023-11-21 22:24:35,914 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-21 22:24:35,965 WARN L675 CHandler]: The function memcmp is called, but not defined or handled by StandardFunctionHandler. [2023-11-21 22:24:35,973 INFO L206 MainTranslator]: Completed translation [2023-11-21 22:24:35,974 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:24:35 WrapperNode [2023-11-21 22:24:35,974 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-21 22:24:35,975 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-21 22:24:35,975 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-21 22:24:35,975 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-21 22:24:35,984 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:24:35" (1/1) ... [2023-11-21 22:24:36,067 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:24:35" (1/1) ... [2023-11-21 22:24:36,190 INFO L138 Inliner]: procedures = 180, calls = 624, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 2517 [2023-11-21 22:24:36,191 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-21 22:24:36,192 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-21 22:24:36,193 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-21 22:24:36,193 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-21 22:24:36,202 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:24:35" (1/1) ... [2023-11-21 22:24:36,202 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:24:35" (1/1) ... [2023-11-21 22:24:36,224 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:24:35" (1/1) ... [2023-11-21 22:24:36,224 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:24:35" (1/1) ... [2023-11-21 22:24:36,366 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:24:35" (1/1) ... [2023-11-21 22:24:36,385 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:24:35" (1/1) ... [2023-11-21 22:24:36,394 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:24:35" (1/1) ... [2023-11-21 22:24:36,407 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:24:35" (1/1) ... [2023-11-21 22:24:36,422 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-21 22:24:36,423 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-21 22:24:36,423 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-21 22:24:36,423 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-21 22:24:36,424 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:24:35" (1/1) ... [2023-11-21 22:24:36,430 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-21 22:24:36,443 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae1cb0fb-ace2-489e-89e1-d56fafa3d0ad/bin/uautomizer-verify-bycVGegfSx/z3 [2023-11-21 22:24:36,457 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae1cb0fb-ace2-489e-89e1-d56fafa3d0ad/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-21 22:24:36,499 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2023-11-21 22:24:36,499 INFO L130 BoogieDeclarations]: Found specification of procedure test_int_int [2023-11-21 22:24:36,500 INFO L138 BoogieDeclarations]: Found implementation of procedure test_int_int [2023-11-21 22:24:36,500 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2023-11-21 22:24:36,500 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-11-21 22:24:36,500 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-11-21 22:24:36,500 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2023-11-21 22:24:36,500 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2023-11-21 22:24:36,500 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-21 22:24:36,502 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-21 22:24:36,502 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-11-21 22:24:36,502 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-21 22:24:36,503 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2023-11-21 22:24:36,503 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-11-21 22:24:36,503 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-21 22:24:36,503 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2023-11-21 22:24:36,504 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2023-11-21 22:24:36,504 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-21 22:24:36,504 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-21 22:24:36,492 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae1cb0fb-ace2-489e-89e1-d56fafa3d0ad/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-21 22:24:36,894 INFO L240 CfgBuilder]: Building ICFG [2023-11-21 22:24:36,897 INFO L266 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-21 22:24:36,901 WARN L820 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2023-11-21 22:24:48,487 INFO L281 CfgBuilder]: Performing block encoding [2023-11-21 22:24:49,006 INFO L303 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-21 22:24:49,006 INFO L308 CfgBuilder]: Removed 168 assume(true) statements. [2023-11-21 22:24:49,009 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 10:24:49 BoogieIcfgContainer [2023-11-21 22:24:49,009 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-21 22:24:49,012 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-21 22:24:49,012 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-21 22:24:49,016 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-21 22:24:49,016 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.11 10:24:34" (1/3) ... [2023-11-21 22:24:49,017 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2e57f17b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 10:24:49, skipping insertion in model container [2023-11-21 22:24:49,017 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:24:35" (2/3) ... [2023-11-21 22:24:49,017 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2e57f17b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 10:24:49, skipping insertion in model container [2023-11-21 22:24:49,018 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 10:24:49" (3/3) ... [2023-11-21 22:24:49,019 INFO L112 eAbstractionObserver]: Analyzing ICFG uthash_JEN_test10-3.i [2023-11-21 22:24:49,040 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-21 22:24:49,040 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1193 error locations. [2023-11-21 22:24:49,120 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-21 22:24:49,127 INFO L357 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, mHoare=false, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, 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;@126ae311, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-21 22:24:49,128 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1193 error locations. [2023-11-21 22:24:49,139 INFO L276 IsEmpty]: Start isEmpty. Operand has 2211 states, 1006 states have (on average 2.489065606361829) internal successors, (2504), 2197 states have internal predecessors, (2504), 14 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (14), 11 states have call predecessors, (14), 14 states have call successors, (14) [2023-11-21 22:24:49,146 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2023-11-21 22:24:49,147 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 22:24:49,148 INFO L195 NwaCegarLoop]: trace histogram [1, 1] [2023-11-21 22:24:49,148 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 1190 more)] === [2023-11-21 22:24:49,157 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:24:49,158 INFO L85 PathProgramCache]: Analyzing trace with hash 127668, now seen corresponding path program 1 times [2023-11-21 22:24:49,179 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-21 22:24:49,180 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1093901536] [2023-11-21 22:24:49,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:24:49,180 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-21 22:24:49,181 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae1cb0fb-ace2-489e-89e1-d56fafa3d0ad/bin/uautomizer-verify-bycVGegfSx/mathsat [2023-11-21 22:24:49,183 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae1cb0fb-ace2-489e-89e1-d56fafa3d0ad/bin/uautomizer-verify-bycVGegfSx/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-21 22:24:49,214 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae1cb0fb-ace2-489e-89e1-d56fafa3d0ad/bin/uautomizer-verify-bycVGegfSx/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2023-11-21 22:24:49,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:24:49,421 INFO L262 TraceCheckSpWp]: Trace formula consists of 26 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-21 22:24:49,429 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 22:24:49,505 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 [2023-11-21 22:24:49,526 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 22:24:49,526 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-21 22:24:49,527 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-21 22:24:49,527 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1093901536] [2023-11-21 22:24:49,528 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1093901536] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:24:49,528 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 22:24:49,528 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-21 22:24:49,531 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1043744578] [2023-11-21 22:24:49,532 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:24:49,536 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-21 22:24:49,536 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-21 22:24:49,575 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-21 22:24:49,576 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-21 22:24:49,583 INFO L87 Difference]: Start difference. First operand has 2211 states, 1006 states have (on average 2.489065606361829) internal successors, (2504), 2197 states have internal predecessors, (2504), 14 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (14), 11 states have call predecessors, (14), 14 states have call successors, (14) Second operand has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 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) [2023-11-21 22:24:55,822 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 22:24:55,822 INFO L93 Difference]: Finished difference Result 2979 states and 3178 transitions. [2023-11-21 22:24:55,824 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-21 22:24:55,825 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 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 2 [2023-11-21 22:24:55,825 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 22:24:55,868 INFO L225 Difference]: With dead ends: 2979 [2023-11-21 22:24:55,868 INFO L226 Difference]: Without dead ends: 2978 [2023-11-21 22:24:55,870 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-21 22:24:55,874 INFO L413 NwaCegarLoop]: 1377 mSDtfsCounter, 2109 mSDsluCounter, 468 mSDsCounter, 0 mSdLazyCounter, 1706 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2119 SdHoareTripleChecker+Valid, 1845 SdHoareTripleChecker+Invalid, 1729 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 1706 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.0s IncrementalHoareTripleChecker+Time [2023-11-21 22:24:55,875 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2119 Valid, 1845 Invalid, 1729 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 1706 Invalid, 0 Unknown, 0 Unchecked, 6.0s Time] [2023-11-21 22:24:55,900 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2978 states. [2023-11-21 22:24:56,029 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2978 to 2323. [2023-11-21 22:24:56,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2323 states, 1142 states have (on average 2.3047285464098075) internal successors, (2632), 2307 states have internal predecessors, (2632), 16 states have call successors, (16), 3 states have call predecessors, (16), 3 states have return successors, (16), 13 states have call predecessors, (16), 16 states have call successors, (16) [2023-11-21 22:24:56,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2323 states to 2323 states and 2664 transitions. [2023-11-21 22:24:56,050 INFO L78 Accepts]: Start accepts. Automaton has 2323 states and 2664 transitions. Word has length 2 [2023-11-21 22:24:56,051 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 22:24:56,051 INFO L495 AbstractCegarLoop]: Abstraction has 2323 states and 2664 transitions. [2023-11-21 22:24:56,051 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 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) [2023-11-21 22:24:56,053 INFO L276 IsEmpty]: Start isEmpty. Operand 2323 states and 2664 transitions. [2023-11-21 22:24:56,053 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2023-11-21 22:24:56,053 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 22:24:56,053 INFO L195 NwaCegarLoop]: trace histogram [1, 1] [2023-11-21 22:24:56,063 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae1cb0fb-ace2-489e-89e1-d56fafa3d0ad/bin/uautomizer-verify-bycVGegfSx/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2023-11-21 22:24:56,263 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae1cb0fb-ace2-489e-89e1-d56fafa3d0ad/bin/uautomizer-verify-bycVGegfSx/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-21 22:24:56,267 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 1190 more)] === [2023-11-21 22:24:56,268 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:24:56,268 INFO L85 PathProgramCache]: Analyzing trace with hash 127669, now seen corresponding path program 1 times [2023-11-21 22:24:56,268 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-21 22:24:56,269 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [43989301] [2023-11-21 22:24:56,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:24:56,269 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-21 22:24:56,269 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae1cb0fb-ace2-489e-89e1-d56fafa3d0ad/bin/uautomizer-verify-bycVGegfSx/mathsat [2023-11-21 22:24:56,271 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae1cb0fb-ace2-489e-89e1-d56fafa3d0ad/bin/uautomizer-verify-bycVGegfSx/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-21 22:24:56,312 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae1cb0fb-ace2-489e-89e1-d56fafa3d0ad/bin/uautomizer-verify-bycVGegfSx/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2023-11-21 22:24:56,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:24:56,536 INFO L262 TraceCheckSpWp]: Trace formula consists of 26 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-21 22:24:56,540 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 22:24:56,554 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 [2023-11-21 22:24:56,571 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 22:24:56,571 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-21 22:24:56,571 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-21 22:24:56,572 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [43989301] [2023-11-21 22:24:56,572 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [43989301] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:24:56,572 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 22:24:56,572 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-21 22:24:56,573 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1298921595] [2023-11-21 22:24:56,573 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:24:56,574 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-21 22:24:56,575 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-21 22:24:56,575 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-21 22:24:56,576 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-21 22:24:56,576 INFO L87 Difference]: Start difference. First operand 2323 states and 2664 transitions. Second operand has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 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) [2023-11-21 22:25:05,566 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 22:25:05,567 INFO L93 Difference]: Finished difference Result 3369 states and 3810 transitions. [2023-11-21 22:25:05,567 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-21 22:25:05,568 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 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 2 [2023-11-21 22:25:05,568 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 22:25:05,587 INFO L225 Difference]: With dead ends: 3369 [2023-11-21 22:25:05,587 INFO L226 Difference]: Without dead ends: 3369 [2023-11-21 22:25:05,588 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-21 22:25:05,589 INFO L413 NwaCegarLoop]: 1674 mSDtfsCounter, 1138 mSDsluCounter, 1150 mSDsCounter, 0 mSdLazyCounter, 1844 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1142 SdHoareTripleChecker+Valid, 2824 SdHoareTripleChecker+Invalid, 1851 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 1844 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.8s IncrementalHoareTripleChecker+Time [2023-11-21 22:25:05,590 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1142 Valid, 2824 Invalid, 1851 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 1844 Invalid, 0 Unknown, 0 Unchecked, 8.8s Time] [2023-11-21 22:25:05,600 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3369 states. [2023-11-21 22:25:05,685 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3369 to 2700. [2023-11-21 22:25:05,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2700 states, 1517 states have (on average 2.2432432432432434) internal successors, (3403), 2681 states have internal predecessors, (3403), 19 states have call successors, (19), 3 states have call predecessors, (19), 3 states have return successors, (19), 16 states have call predecessors, (19), 19 states have call successors, (19) [2023-11-21 22:25:05,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2700 states to 2700 states and 3441 transitions. [2023-11-21 22:25:05,703 INFO L78 Accepts]: Start accepts. Automaton has 2700 states and 3441 transitions. Word has length 2 [2023-11-21 22:25:05,703 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 22:25:05,703 INFO L495 AbstractCegarLoop]: Abstraction has 2700 states and 3441 transitions. [2023-11-21 22:25:05,703 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 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) [2023-11-21 22:25:05,703 INFO L276 IsEmpty]: Start isEmpty. Operand 2700 states and 3441 transitions. [2023-11-21 22:25:05,704 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2023-11-21 22:25:05,704 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 22:25:05,704 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2023-11-21 22:25:05,708 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae1cb0fb-ace2-489e-89e1-d56fafa3d0ad/bin/uautomizer-verify-bycVGegfSx/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2023-11-21 22:25:05,906 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae1cb0fb-ace2-489e-89e1-d56fafa3d0ad/bin/uautomizer-verify-bycVGegfSx/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-21 22:25:05,907 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 1190 more)] === [2023-11-21 22:25:05,908 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:25:05,908 INFO L85 PathProgramCache]: Analyzing trace with hash -491461852, now seen corresponding path program 1 times [2023-11-21 22:25:05,908 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-21 22:25:05,909 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1824213416] [2023-11-21 22:25:05,909 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:25:05,909 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-21 22:25:05,909 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae1cb0fb-ace2-489e-89e1-d56fafa3d0ad/bin/uautomizer-verify-bycVGegfSx/mathsat [2023-11-21 22:25:05,910 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae1cb0fb-ace2-489e-89e1-d56fafa3d0ad/bin/uautomizer-verify-bycVGegfSx/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-21 22:25:05,913 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae1cb0fb-ace2-489e-89e1-d56fafa3d0ad/bin/uautomizer-verify-bycVGegfSx/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2023-11-21 22:25:06,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:25:06,155 INFO L262 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-21 22:25:06,160 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 22:25:06,177 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 [2023-11-21 22:25:06,189 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 [2023-11-21 22:25:06,265 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 22:25:06,267 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 [2023-11-21 22:25:06,291 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2023-11-21 22:25:06,292 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 [2023-11-21 22:25:06,309 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 22:25:06,309 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-21 22:25:06,309 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-21 22:25:06,310 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1824213416] [2023-11-21 22:25:06,310 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1824213416] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:25:06,310 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 22:25:06,310 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-21 22:25:06,311 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [340091910] [2023-11-21 22:25:06,311 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:25:06,311 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-21 22:25:06,312 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-21 22:25:06,312 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-21 22:25:06,313 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-21 22:25:06,313 INFO L87 Difference]: Start difference. First operand 2700 states and 3441 transitions. Second operand has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 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)