./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/uthash-2.0.2/uthash_BER_test6-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 0e0057cc Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b425b1b8-e56b-4a99-86a6-15bfbfde3f34/bin/uautomizer-verify-BQ2R08f2Ya/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b425b1b8-e56b-4a99-86a6-15bfbfde3f34/bin/uautomizer-verify-BQ2R08f2Ya/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b425b1b8-e56b-4a99-86a6-15bfbfde3f34/bin/uautomizer-verify-BQ2R08f2Ya/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b425b1b8-e56b-4a99-86a6-15bfbfde3f34/bin/uautomizer-verify-BQ2R08f2Ya/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_BER_test6-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b425b1b8-e56b-4a99-86a6-15bfbfde3f34/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b425b1b8-e56b-4a99-86a6-15bfbfde3f34/bin/uautomizer-verify-BQ2R08f2Ya --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 05edfd344a133924af20e7887ded3d695179bf474d7b39ea2b7287f4a108ff8d --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-29 04:57:21,156 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-29 04:57:21,217 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b425b1b8-e56b-4a99-86a6-15bfbfde3f34/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2023-11-29 04:57:21,222 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-29 04:57:21,222 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-29 04:57:21,246 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-29 04:57:21,247 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-29 04:57:21,247 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-29 04:57:21,248 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-29 04:57:21,248 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-29 04:57:21,249 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-29 04:57:21,249 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-29 04:57:21,250 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-29 04:57:21,251 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-29 04:57:21,251 INFO L153 SettingsManager]: * Use SBE=true [2023-11-29 04:57:21,252 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-29 04:57:21,252 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-29 04:57:21,253 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-29 04:57:21,253 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-29 04:57:21,254 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-29 04:57:21,254 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-29 04:57:21,255 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-29 04:57:21,255 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-29 04:57:21,256 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-29 04:57:21,256 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-29 04:57:21,257 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-29 04:57:21,257 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-29 04:57:21,258 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-29 04:57:21,258 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-29 04:57:21,258 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-29 04:57:21,259 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-29 04:57:21,259 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-29 04:57:21,260 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 04:57:21,260 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-29 04:57:21,260 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-29 04:57:21,260 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-29 04:57:21,260 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-29 04:57:21,261 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-29 04:57:21,261 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-29 04:57:21,261 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-29 04:57:21,261 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-29 04:57:21,261 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_b425b1b8-e56b-4a99-86a6-15bfbfde3f34/bin/uautomizer-verify-BQ2R08f2Ya/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b425b1b8-e56b-4a99-86a6-15bfbfde3f34/bin/uautomizer-verify-BQ2R08f2Ya Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 05edfd344a133924af20e7887ded3d695179bf474d7b39ea2b7287f4a108ff8d [2023-11-29 04:57:21,465 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-29 04:57:21,491 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-29 04:57:21,493 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-29 04:57:21,494 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-29 04:57:21,495 INFO L274 PluginConnector]: CDTParser initialized [2023-11-29 04:57:21,496 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b425b1b8-e56b-4a99-86a6-15bfbfde3f34/bin/uautomizer-verify-BQ2R08f2Ya/../../sv-benchmarks/c/uthash-2.0.2/uthash_BER_test6-1.i [2023-11-29 04:57:24,282 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-29 04:57:24,552 INFO L384 CDTParser]: Found 1 translation units. [2023-11-29 04:57:24,553 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b425b1b8-e56b-4a99-86a6-15bfbfde3f34/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test6-1.i [2023-11-29 04:57:24,571 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b425b1b8-e56b-4a99-86a6-15bfbfde3f34/bin/uautomizer-verify-BQ2R08f2Ya/data/4f598bf71/0eb114b1c2ef4776969d4cf0b4865ff1/FLAGcd55828eb [2023-11-29 04:57:24,583 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b425b1b8-e56b-4a99-86a6-15bfbfde3f34/bin/uautomizer-verify-BQ2R08f2Ya/data/4f598bf71/0eb114b1c2ef4776969d4cf0b4865ff1 [2023-11-29 04:57:24,585 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-29 04:57:24,586 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-29 04:57:24,586 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-29 04:57:24,587 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-29 04:57:24,591 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-29 04:57:24,591 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 04:57:24" (1/1) ... [2023-11-29 04:57:24,592 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@59371b36 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:57:24, skipping insertion in model container [2023-11-29 04:57:24,593 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 04:57:24" (1/1) ... [2023-11-29 04:57:24,665 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-29 04:57:25,199 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 04:57:25,212 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) [2023-11-29 04:57:25,213 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@5325676a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:57:25, skipping insertion in model container [2023-11-29 04:57:25,213 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-29 04:57:25,214 INFO L186 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2023-11-29 04:57:25,215 INFO L158 Benchmark]: Toolchain (without parser) took 628.76ms. Allocated memory is still 157.3MB. Free memory was 113.7MB in the beginning and 90.7MB in the end (delta: 23.1MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB. [2023-11-29 04:57:25,216 INFO L158 Benchmark]: CDTParser took 0.17ms. Allocated memory is still 157.3MB. Free memory is still 130.2MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-29 04:57:25,217 INFO L158 Benchmark]: CACSL2BoogieTranslator took 627.11ms. Allocated memory is still 157.3MB. Free memory was 113.7MB in the beginning and 91.1MB in the end (delta: 22.7MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. [2023-11-29 04:57:25,218 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17ms. Allocated memory is still 157.3MB. Free memory is still 130.2MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 627.11ms. Allocated memory is still 157.3MB. Free memory was 113.7MB in the beginning and 91.1MB in the end (delta: 22.7MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 990]: 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-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b425b1b8-e56b-4a99-86a6-15bfbfde3f34/bin/uautomizer-verify-BQ2R08f2Ya/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b425b1b8-e56b-4a99-86a6-15bfbfde3f34/bin/uautomizer-verify-BQ2R08f2Ya/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b425b1b8-e56b-4a99-86a6-15bfbfde3f34/bin/uautomizer-verify-BQ2R08f2Ya/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b425b1b8-e56b-4a99-86a6-15bfbfde3f34/bin/uautomizer-verify-BQ2R08f2Ya/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_BER_test6-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b425b1b8-e56b-4a99-86a6-15bfbfde3f34/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b425b1b8-e56b-4a99-86a6-15bfbfde3f34/bin/uautomizer-verify-BQ2R08f2Ya --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 05edfd344a133924af20e7887ded3d695179bf474d7b39ea2b7287f4a108ff8d --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-29 04:57:26,887 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-29 04:57:26,968 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b425b1b8-e56b-4a99-86a6-15bfbfde3f34/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2023-11-29 04:57:26,974 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-29 04:57:26,974 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-29 04:57:27,002 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-29 04:57:27,003 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-29 04:57:27,004 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-29 04:57:27,004 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-29 04:57:27,005 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-29 04:57:27,005 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-29 04:57:27,006 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-29 04:57:27,007 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-29 04:57:27,007 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-29 04:57:27,008 INFO L153 SettingsManager]: * Use SBE=true [2023-11-29 04:57:27,008 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-29 04:57:27,009 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-29 04:57:27,009 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-29 04:57:27,010 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-29 04:57:27,010 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-29 04:57:27,011 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-29 04:57:27,011 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-29 04:57:27,012 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-29 04:57:27,012 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-29 04:57:27,013 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-29 04:57:27,013 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-11-29 04:57:27,013 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-11-29 04:57:27,014 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-29 04:57:27,014 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-29 04:57:27,015 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-29 04:57:27,015 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-29 04:57:27,016 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-29 04:57:27,016 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-29 04:57:27,017 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-29 04:57:27,017 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 04:57:27,018 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-29 04:57:27,018 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-29 04:57:27,018 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2023-11-29 04:57:27,019 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-11-29 04:57:27,019 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-29 04:57:27,020 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-29 04:57:27,020 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-29 04:57:27,021 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-29 04:57:27,021 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2023-11-29 04:57:27,022 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_b425b1b8-e56b-4a99-86a6-15bfbfde3f34/bin/uautomizer-verify-BQ2R08f2Ya/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b425b1b8-e56b-4a99-86a6-15bfbfde3f34/bin/uautomizer-verify-BQ2R08f2Ya Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 05edfd344a133924af20e7887ded3d695179bf474d7b39ea2b7287f4a108ff8d [2023-11-29 04:57:27,297 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-29 04:57:27,318 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-29 04:57:27,321 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-29 04:57:27,322 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-29 04:57:27,323 INFO L274 PluginConnector]: CDTParser initialized [2023-11-29 04:57:27,324 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b425b1b8-e56b-4a99-86a6-15bfbfde3f34/bin/uautomizer-verify-BQ2R08f2Ya/../../sv-benchmarks/c/uthash-2.0.2/uthash_BER_test6-1.i [2023-11-29 04:57:30,178 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-29 04:57:30,483 INFO L384 CDTParser]: Found 1 translation units. [2023-11-29 04:57:30,483 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b425b1b8-e56b-4a99-86a6-15bfbfde3f34/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test6-1.i [2023-11-29 04:57:30,502 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b425b1b8-e56b-4a99-86a6-15bfbfde3f34/bin/uautomizer-verify-BQ2R08f2Ya/data/692ed5348/8e497d40847b49e8887dd8806268a99b/FLAG50e67a076 [2023-11-29 04:57:30,517 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b425b1b8-e56b-4a99-86a6-15bfbfde3f34/bin/uautomizer-verify-BQ2R08f2Ya/data/692ed5348/8e497d40847b49e8887dd8806268a99b [2023-11-29 04:57:30,519 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-29 04:57:30,521 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-29 04:57:30,522 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-29 04:57:30,522 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-29 04:57:30,527 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-29 04:57:30,528 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 04:57:30" (1/1) ... [2023-11-29 04:57:30,529 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4104c13f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:57:30, skipping insertion in model container [2023-11-29 04:57:30,529 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 04:57:30" (1/1) ... [2023-11-29 04:57:30,607 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-29 04:57:31,169 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 04:57:31,184 INFO L199 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2023-11-29 04:57:31,199 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-29 04:57:31,287 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 04:57:31,292 INFO L202 MainTranslator]: Completed pre-run [2023-11-29 04:57:31,371 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 04:57:31,424 WARN L675 CHandler]: The function memcmp is called, but not defined or handled by StandardFunctionHandler. [2023-11-29 04:57:31,432 INFO L206 MainTranslator]: Completed translation [2023-11-29 04:57:31,432 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:57:31 WrapperNode [2023-11-29 04:57:31,432 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-29 04:57:31,433 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-29 04:57:31,433 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-29 04:57:31,434 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-29 04:57:31,441 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:57:31" (1/1) ... [2023-11-29 04:57:31,478 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:57:31" (1/1) ... [2023-11-29 04:57:31,539 INFO L138 Inliner]: procedures = 285, calls = 298, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 1048 [2023-11-29 04:57:31,540 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-29 04:57:31,540 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-29 04:57:31,540 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-29 04:57:31,541 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-29 04:57:31,552 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:57:31" (1/1) ... [2023-11-29 04:57:31,552 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:57:31" (1/1) ... [2023-11-29 04:57:31,566 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:57:31" (1/1) ... [2023-11-29 04:57:31,652 INFO L175 MemorySlicer]: Split 264 memory accesses to 5 slices as follows [2, 3, 34, 5, 220]. 83 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0, 0, 0]. The 56 writes are split as follows [0, 2, 4, 1, 49]. [2023-11-29 04:57:31,652 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:57:31" (1/1) ... [2023-11-29 04:57:31,653 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:57:31" (1/1) ... [2023-11-29 04:57:31,691 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:57:31" (1/1) ... [2023-11-29 04:57:31,701 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:57:31" (1/1) ... [2023-11-29 04:57:31,708 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:57:31" (1/1) ... [2023-11-29 04:57:31,715 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:57:31" (1/1) ... [2023-11-29 04:57:31,725 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-29 04:57:31,726 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-29 04:57:31,726 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-29 04:57:31,726 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-29 04:57:31,727 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:57:31" (1/1) ... [2023-11-29 04:57:31,733 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 04:57:31,743 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b425b1b8-e56b-4a99-86a6-15bfbfde3f34/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 04:57:31,758 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b425b1b8-e56b-4a99-86a6-15bfbfde3f34/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-29 04:57:31,760 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b425b1b8-e56b-4a99-86a6-15bfbfde3f34/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-29 04:57:31,785 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2023-11-29 04:57:31,786 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2023-11-29 04:57:31,786 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#0 [2023-11-29 04:57:31,786 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#1 [2023-11-29 04:57:31,786 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#2 [2023-11-29 04:57:31,786 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#3 [2023-11-29 04:57:31,786 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#4 [2023-11-29 04:57:31,786 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#0 [2023-11-29 04:57:31,786 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#1 [2023-11-29 04:57:31,786 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#2 [2023-11-29 04:57:31,787 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#3 [2023-11-29 04:57:31,787 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4#4 [2023-11-29 04:57:31,787 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-29 04:57:31,787 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2023-11-29 04:57:31,787 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2023-11-29 04:57:31,787 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2023-11-29 04:57:31,787 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2023-11-29 04:57:31,788 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#3 [2023-11-29 04:57:31,788 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#4 [2023-11-29 04:57:31,788 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-29 04:57:31,788 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#0 [2023-11-29 04:57:31,788 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#1 [2023-11-29 04:57:31,788 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#2 [2023-11-29 04:57:31,788 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#3 [2023-11-29 04:57:31,789 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4#4 [2023-11-29 04:57:31,789 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2023-11-29 04:57:31,789 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#1 [2023-11-29 04:57:31,789 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#2 [2023-11-29 04:57:31,789 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#3 [2023-11-29 04:57:31,789 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#4 [2023-11-29 04:57:31,789 INFO L130 BoogieDeclarations]: Found specification of procedure alt_bzero [2023-11-29 04:57:31,789 INFO L138 BoogieDeclarations]: Found implementation of procedure alt_bzero [2023-11-29 04:57:31,790 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-11-29 04:57:31,790 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-11-29 04:57:31,790 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-29 04:57:31,790 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-29 04:57:31,790 INFO L130 BoogieDeclarations]: Found specification of procedure alt_malloc [2023-11-29 04:57:31,790 INFO L138 BoogieDeclarations]: Found implementation of procedure alt_malloc [2023-11-29 04:57:31,790 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2023-11-29 04:57:31,790 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2023-11-29 04:57:31,790 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2023-11-29 04:57:31,791 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#3 [2023-11-29 04:57:31,791 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#4 [2023-11-29 04:57:31,791 INFO L130 BoogieDeclarations]: Found specification of procedure alt_free [2023-11-29 04:57:31,791 INFO L138 BoogieDeclarations]: Found implementation of procedure alt_free [2023-11-29 04:57:31,791 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-29 04:57:31,791 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-29 04:57:32,014 INFO L241 CfgBuilder]: Building ICFG [2023-11-29 04:57:32,016 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-29 04:57:36,289 INFO L282 CfgBuilder]: Performing block encoding [2023-11-29 04:57:36,430 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-29 04:57:36,430 INFO L309 CfgBuilder]: Removed 63 assume(true) statements. [2023-11-29 04:57:36,431 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 04:57:36 BoogieIcfgContainer [2023-11-29 04:57:36,431 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-29 04:57:36,434 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-29 04:57:36,434 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-29 04:57:36,436 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-29 04:57:36,436 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.11 04:57:30" (1/3) ... [2023-11-29 04:57:36,437 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3188c693 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 04:57:36, skipping insertion in model container [2023-11-29 04:57:36,437 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 04:57:31" (2/3) ... [2023-11-29 04:57:36,437 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3188c693 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 04:57:36, skipping insertion in model container [2023-11-29 04:57:36,437 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 04:57:36" (3/3) ... [2023-11-29 04:57:36,439 INFO L112 eAbstractionObserver]: Analyzing ICFG uthash_BER_test6-1.i [2023-11-29 04:57:36,452 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-29 04:57:36,452 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 528 error locations. [2023-11-29 04:57:36,504 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-29 04:57:36,510 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;@3a7f8f05, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-29 04:57:36,510 INFO L358 AbstractCegarLoop]: Starting to check reachability of 528 error locations. [2023-11-29 04:57:36,517 INFO L276 IsEmpty]: Start isEmpty. Operand has 982 states, 431 states have (on average 2.51508120649652) internal successors, (1084), 962 states have internal predecessors, (1084), 18 states have call successors, (18), 5 states have call predecessors, (18), 5 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) [2023-11-29 04:57:36,522 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2023-11-29 04:57:36,522 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 04:57:36,522 INFO L195 NwaCegarLoop]: trace histogram [1, 1] [2023-11-29 04:57:36,523 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, alt_mallocErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alt_mallocErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 525 more)] === [2023-11-29 04:57:36,527 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:57:36,528 INFO L85 PathProgramCache]: Analyzing trace with hash 55333, now seen corresponding path program 1 times [2023-11-29 04:57:36,560 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 04:57:36,560 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1242520224] [2023-11-29 04:57:36,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:57:36,561 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 [2023-11-29 04:57:36,561 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b425b1b8-e56b-4a99-86a6-15bfbfde3f34/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 04:57:36,563 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b425b1b8-e56b-4a99-86a6-15bfbfde3f34/bin/uautomizer-verify-BQ2R08f2Ya/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) [2023-11-29 04:57:36,573 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b425b1b8-e56b-4a99-86a6-15bfbfde3f34/bin/uautomizer-verify-BQ2R08f2Ya/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 [2023-11-29 04:57:36,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:57:36,735 INFO L262 TraceCheckSpWp]: Trace formula consists of 32 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-29 04:57:36,741 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:57:36,804 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 [2023-11-29 04:57:36,816 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 04:57:36,816 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 04:57:36,817 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 04:57:36,817 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1242520224] [2023-11-29 04:57:36,818 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1242520224] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:57:36,818 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 04:57:36,818 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-29 04:57:36,820 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1283863305] [2023-11-29 04:57:36,820 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:57:36,824 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 04:57:36,825 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 04:57:36,852 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 04:57:36,852 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 04:57:36,856 INFO L87 Difference]: Start difference. First operand has 982 states, 431 states have (on average 2.51508120649652) internal successors, (1084), 962 states have internal predecessors, (1084), 18 states have call successors, (18), 5 states have call predecessors, (18), 5 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) 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) [2023-11-29 04:57:38,867 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 04:57:38,867 INFO L93 Difference]: Finished difference Result 1054 states and 1123 transitions. [2023-11-29 04:57:38,869 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 04:57:38,870 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 [2023-11-29 04:57:38,871 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 04:57:38,889 INFO L225 Difference]: With dead ends: 1054 [2023-11-29 04:57:38,890 INFO L226 Difference]: Without dead ends: 1053 [2023-11-29 04:57:38,891 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 [2023-11-29 04:57:38,894 INFO L413 NwaCegarLoop]: 661 mSDtfsCounter, 650 mSDsluCounter, 201 mSDsCounter, 0 mSdLazyCounter, 628 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 653 SdHoareTripleChecker+Valid, 862 SdHoareTripleChecker+Invalid, 641 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 628 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2023-11-29 04:57:38,895 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [653 Valid, 862 Invalid, 641 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 628 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2023-11-29 04:57:38,911 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1053 states. [2023-11-29 04:57:38,966 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1053 to 995. [2023-11-29 04:57:38,969 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 995 states, 459 states have (on average 2.3398692810457518) internal successors, (1074), 977 states have internal predecessors, (1074), 17 states have call successors, (17), 5 states have call predecessors, (17), 4 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2023-11-29 04:57:38,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 995 states to 995 states and 1104 transitions. [2023-11-29 04:57:38,975 INFO L78 Accepts]: Start accepts. Automaton has 995 states and 1104 transitions. Word has length 2 [2023-11-29 04:57:38,975 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 04:57:38,975 INFO L495 AbstractCegarLoop]: Abstraction has 995 states and 1104 transitions. [2023-11-29 04:57:38,976 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) [2023-11-29 04:57:38,976 INFO L276 IsEmpty]: Start isEmpty. Operand 995 states and 1104 transitions. [2023-11-29 04:57:38,976 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2023-11-29 04:57:38,976 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 04:57:38,976 INFO L195 NwaCegarLoop]: trace histogram [1, 1] [2023-11-29 04:57:38,980 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b425b1b8-e56b-4a99-86a6-15bfbfde3f34/bin/uautomizer-verify-BQ2R08f2Ya/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 [2023-11-29 04:57:39,179 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b425b1b8-e56b-4a99-86a6-15bfbfde3f34/bin/uautomizer-verify-BQ2R08f2Ya/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 [2023-11-29 04:57:39,179 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, alt_mallocErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alt_mallocErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 525 more)] === [2023-11-29 04:57:39,180 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:57:39,180 INFO L85 PathProgramCache]: Analyzing trace with hash 55334, now seen corresponding path program 1 times [2023-11-29 04:57:39,180 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 04:57:39,181 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1776964933] [2023-11-29 04:57:39,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:57:39,181 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 [2023-11-29 04:57:39,181 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b425b1b8-e56b-4a99-86a6-15bfbfde3f34/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 04:57:39,182 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b425b1b8-e56b-4a99-86a6-15bfbfde3f34/bin/uautomizer-verify-BQ2R08f2Ya/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) [2023-11-29 04:57:39,184 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b425b1b8-e56b-4a99-86a6-15bfbfde3f34/bin/uautomizer-verify-BQ2R08f2Ya/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 [2023-11-29 04:57:39,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:57:39,306 INFO L262 TraceCheckSpWp]: Trace formula consists of 32 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-29 04:57:39,308 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:57:39,320 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 [2023-11-29 04:57:39,331 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 04:57:39,331 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 04:57:39,332 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 04:57:39,332 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1776964933] [2023-11-29 04:57:39,332 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1776964933] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:57:39,332 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 04:57:39,333 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-29 04:57:39,333 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1004605898] [2023-11-29 04:57:39,333 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:57:39,334 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 04:57:39,334 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 04:57:39,335 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 04:57:39,335 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 04:57:39,335 INFO L87 Difference]: Start difference. First operand 995 states and 1104 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) [2023-11-29 04:57:42,339 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 04:57:42,340 INFO L93 Difference]: Finished difference Result 1353 states and 1498 transitions. [2023-11-29 04:57:42,341 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 04:57:42,341 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 [2023-11-29 04:57:42,341 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 04:57:42,346 INFO L225 Difference]: With dead ends: 1353 [2023-11-29 04:57:42,347 INFO L226 Difference]: Without dead ends: 1353 [2023-11-29 04:57:42,347 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 [2023-11-29 04:57:42,348 INFO L413 NwaCegarLoop]: 772 mSDtfsCounter, 382 mSDsluCounter, 493 mSDsCounter, 0 mSdLazyCounter, 785 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 387 SdHoareTripleChecker+Valid, 1265 SdHoareTripleChecker+Invalid, 790 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 785 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2023-11-29 04:57:42,348 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [387 Valid, 1265 Invalid, 790 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 785 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2023-11-29 04:57:42,350 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1353 states. [2023-11-29 04:57:42,366 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1353 to 1165. [2023-11-29 04:57:42,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1165 states, 628 states have (on average 2.3121019108280256) internal successors, (1452), 1145 states have internal predecessors, (1452), 19 states have call successors, (19), 5 states have call predecessors, (19), 4 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2023-11-29 04:57:42,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1165 states to 1165 states and 1486 transitions. [2023-11-29 04:57:42,372 INFO L78 Accepts]: Start accepts. Automaton has 1165 states and 1486 transitions. Word has length 2 [2023-11-29 04:57:42,372 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 04:57:42,372 INFO L495 AbstractCegarLoop]: Abstraction has 1165 states and 1486 transitions. [2023-11-29 04:57:42,373 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) [2023-11-29 04:57:42,373 INFO L276 IsEmpty]: Start isEmpty. Operand 1165 states and 1486 transitions. [2023-11-29 04:57:42,373 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2023-11-29 04:57:42,373 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 04:57:42,373 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2023-11-29 04:57:42,375 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b425b1b8-e56b-4a99-86a6-15bfbfde3f34/bin/uautomizer-verify-BQ2R08f2Ya/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)] Ended with exit code 0 [2023-11-29 04:57:42,573 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b425b1b8-e56b-4a99-86a6-15bfbfde3f34/bin/uautomizer-verify-BQ2R08f2Ya/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 [2023-11-29 04:57:42,574 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, alt_mallocErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alt_mallocErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 525 more)] === [2023-11-29 04:57:42,574 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:57:42,574 INFO L85 PathProgramCache]: Analyzing trace with hash -435639276, now seen corresponding path program 1 times [2023-11-29 04:57:42,575 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 04:57:42,575 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [581292945] [2023-11-29 04:57:42,575 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:57:42,575 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 [2023-11-29 04:57:42,576 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b425b1b8-e56b-4a99-86a6-15bfbfde3f34/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 04:57:42,576 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b425b1b8-e56b-4a99-86a6-15bfbfde3f34/bin/uautomizer-verify-BQ2R08f2Ya/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) [2023-11-29 04:57:42,577 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b425b1b8-e56b-4a99-86a6-15bfbfde3f34/bin/uautomizer-verify-BQ2R08f2Ya/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 [2023-11-29 04:57:42,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:57:42,713 INFO L262 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-29 04:57:42,716 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:57:42,729 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 [2023-11-29 04:57:42,735 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 [2023-11-29 04:57:42,803 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 04:57:42,804 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 [2023-11-29 04:57:42,826 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2023-11-29 04:57:42,826 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 [2023-11-29 04:57:42,848 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 04:57:42,848 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 04:57:42,849 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 04:57:42,849 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [581292945] [2023-11-29 04:57:42,849 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [581292945] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:57:42,849 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 04:57:42,849 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 04:57:42,850 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1869994985] [2023-11-29 04:57:42,850 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:57:42,850 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 04:57:42,850 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 04:57:42,851 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 04:57:42,851 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-29 04:57:42,851 INFO L87 Difference]: Start difference. First operand 1165 states and 1486 transitions. Second operand has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:57:46,688 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 04:57:46,688 INFO L93 Difference]: Finished difference Result 1792 states and 2170 transitions. [2023-11-29 04:57:46,690 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 04:57:46,690 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2023-11-29 04:57:46,690 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 04:57:46,697 INFO L225 Difference]: With dead ends: 1792 [2023-11-29 04:57:46,698 INFO L226 Difference]: Without dead ends: 1792 [2023-11-29 04:57:46,698 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-29 04:57:46,699 INFO L413 NwaCegarLoop]: 515 mSDtfsCounter, 1292 mSDsluCounter, 498 mSDsCounter, 0 mSdLazyCounter, 1054 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1296 SdHoareTripleChecker+Valid, 1013 SdHoareTripleChecker+Invalid, 1071 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 1054 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.8s IncrementalHoareTripleChecker+Time [2023-11-29 04:57:46,700 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1296 Valid, 1013 Invalid, 1071 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 1054 Invalid, 0 Unknown, 0 Unchecked, 3.8s Time] [2023-11-29 04:57:46,704 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1792 states. [2023-11-29 04:57:46,727 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1792 to 1281. [2023-11-29 04:57:46,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1281 states, 744 states have (on average 2.293010752688172) internal successors, (1706), 1261 states have internal predecessors, (1706), 19 states have call successors, (19), 5 states have call predecessors, (19), 4 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2023-11-29 04:57:46,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1281 states to 1281 states and 1740 transitions. [2023-11-29 04:57:46,735 INFO L78 Accepts]: Start accepts. Automaton has 1281 states and 1740 transitions. Word has length 6 [2023-11-29 04:57:46,736 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 04:57:46,736 INFO L495 AbstractCegarLoop]: Abstraction has 1281 states and 1740 transitions. [2023-11-29 04:57:46,736 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:57:46,736 INFO L276 IsEmpty]: Start isEmpty. Operand 1281 states and 1740 transitions. [2023-11-29 04:57:46,736 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2023-11-29 04:57:46,736 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 04:57:46,736 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:57:46,739 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b425b1b8-e56b-4a99-86a6-15bfbfde3f34/bin/uautomizer-verify-BQ2R08f2Ya/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)] Ended with exit code 0 [2023-11-29 04:57:46,937 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b425b1b8-e56b-4a99-86a6-15bfbfde3f34/bin/uautomizer-verify-BQ2R08f2Ya/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 [2023-11-29 04:57:46,937 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, alt_mallocErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alt_mallocErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 525 more)] === [2023-11-29 04:57:46,938 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:57:46,938 INFO L85 PathProgramCache]: Analyzing trace with hash -619915645, now seen corresponding path program 1 times [2023-11-29 04:57:46,938 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 04:57:46,938 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1511933967] [2023-11-29 04:57:46,939 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:57:46,939 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 [2023-11-29 04:57:46,939 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b425b1b8-e56b-4a99-86a6-15bfbfde3f34/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 04:57:46,940 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b425b1b8-e56b-4a99-86a6-15bfbfde3f34/bin/uautomizer-verify-BQ2R08f2Ya/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) [2023-11-29 04:57:46,943 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b425b1b8-e56b-4a99-86a6-15bfbfde3f34/bin/uautomizer-verify-BQ2R08f2Ya/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 (5)] Waiting until timeout for monitored process [2023-11-29 04:57:47,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:57:47,080 INFO L262 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-29 04:57:47,082 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:57:47,088 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 [2023-11-29 04:57:47,098 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 04:57:47,098 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 04:57:47,098 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 04:57:47,099 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1511933967] [2023-11-29 04:57:47,099 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1511933967] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:57:47,099 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 04:57:47,099 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 04:57:47,099 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2088132185] [2023-11-29 04:57:47,100 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:57:47,100 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 04:57:47,100 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 04:57:47,100 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 04:57:47,101 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 04:57:47,101 INFO L87 Difference]: Start difference. First operand 1281 states and 1740 transitions. Second operand has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 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) [2023-11-29 04:57:49,112 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 04:57:49,112 INFO L93 Difference]: Finished difference Result 1760 states and 2444 transitions. [2023-11-29 04:57:49,113 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 04:57:49,113 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 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 7 [2023-11-29 04:57:49,114 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 04:57:49,121 INFO L225 Difference]: With dead ends: 1760 [2023-11-29 04:57:49,122 INFO L226 Difference]: Without dead ends: 1760 [2023-11-29 04:57:49,122 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 04:57:49,123 INFO L413 NwaCegarLoop]: 821 mSDtfsCounter, 869 mSDsluCounter, 252 mSDsCounter, 0 mSdLazyCounter, 773 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 872 SdHoareTripleChecker+Valid, 1073 SdHoareTripleChecker+Invalid, 822 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 773 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2023-11-29 04:57:49,123 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [872 Valid, 1073 Invalid, 822 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 773 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2023-11-29 04:57:49,127 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1760 states. [2023-11-29 04:57:49,144 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1760 to 1236. [2023-11-29 04:57:49,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1236 states, 744 states have (on average 2.213709677419355) internal successors, (1647), 1216 states have internal predecessors, (1647), 19 states have call successors, (19), 5 states have call predecessors, (19), 4 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2023-11-29 04:57:49,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1236 states to 1236 states and 1681 transitions. [2023-11-29 04:57:49,150 INFO L78 Accepts]: Start accepts. Automaton has 1236 states and 1681 transitions. Word has length 7 [2023-11-29 04:57:49,150 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 04:57:49,150 INFO L495 AbstractCegarLoop]: Abstraction has 1236 states and 1681 transitions. [2023-11-29 04:57:49,150 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 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) [2023-11-29 04:57:49,151 INFO L276 IsEmpty]: Start isEmpty. Operand 1236 states and 1681 transitions. [2023-11-29 04:57:49,151 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2023-11-29 04:57:49,151 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 04:57:49,151 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:57:49,154 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b425b1b8-e56b-4a99-86a6-15bfbfde3f34/bin/uautomizer-verify-BQ2R08f2Ya/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 (5)] Ended with exit code 0 [2023-11-29 04:57:49,352 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b425b1b8-e56b-4a99-86a6-15bfbfde3f34/bin/uautomizer-verify-BQ2R08f2Ya/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 [2023-11-29 04:57:49,353 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, alt_mallocErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alt_mallocErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 525 more)] === [2023-11-29 04:57:49,353 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:57:49,353 INFO L85 PathProgramCache]: Analyzing trace with hash -619915644, now seen corresponding path program 1 times [2023-11-29 04:57:49,353 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 04:57:49,353 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1874521634] [2023-11-29 04:57:49,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:57:49,354 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 [2023-11-29 04:57:49,354 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b425b1b8-e56b-4a99-86a6-15bfbfde3f34/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 04:57:49,354 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b425b1b8-e56b-4a99-86a6-15bfbfde3f34/bin/uautomizer-verify-BQ2R08f2Ya/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) [2023-11-29 04:57:49,355 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b425b1b8-e56b-4a99-86a6-15bfbfde3f34/bin/uautomizer-verify-BQ2R08f2Ya/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 (6)] Waiting until timeout for monitored process [2023-11-29 04:57:49,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:57:49,472 INFO L262 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-29 04:57:49,474 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:57:49,484 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 [2023-11-29 04:57:49,508 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 04:57:49,509 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 04:57:49,509 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 04:57:49,509 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1874521634] [2023-11-29 04:57:49,509 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1874521634] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:57:49,510 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 04:57:49,510 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 04:57:49,510 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1268737226] [2023-11-29 04:57:49,510 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:57:49,510 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 04:57:49,511 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 04:57:49,511 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 04:57:49,511 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 04:57:49,511 INFO L87 Difference]: Start difference. First operand 1236 states and 1681 transitions. Second operand has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 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) [2023-11-29 04:57:52,520 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 04:57:52,520 INFO L93 Difference]: Finished difference Result 1793 states and 2433 transitions. [2023-11-29 04:57:52,522 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 04:57:52,522 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 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 7 [2023-11-29 04:57:52,522 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 04:57:52,529 INFO L225 Difference]: With dead ends: 1793 [2023-11-29 04:57:52,529 INFO L226 Difference]: Without dead ends: 1793 [2023-11-29 04:57:52,530 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 04:57:52,530 INFO L413 NwaCegarLoop]: 975 mSDtfsCounter, 620 mSDsluCounter, 365 mSDsCounter, 0 mSdLazyCounter, 831 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 622 SdHoareTripleChecker+Valid, 1340 SdHoareTripleChecker+Invalid, 843 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 831 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2023-11-29 04:57:52,531 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [622 Valid, 1340 Invalid, 843 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 831 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2023-11-29 04:57:52,535 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1793 states. [2023-11-29 04:57:52,552 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1793 to 1226. [2023-11-29 04:57:52,554 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1226 states, 744 states have (on average 2.181451612903226) internal successors, (1623), 1206 states have internal predecessors, (1623), 19 states have call successors, (19), 5 states have call predecessors, (19), 4 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2023-11-29 04:57:52,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1226 states to 1226 states and 1657 transitions. [2023-11-29 04:57:52,558 INFO L78 Accepts]: Start accepts. Automaton has 1226 states and 1657 transitions. Word has length 7 [2023-11-29 04:57:52,558 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 04:57:52,558 INFO L495 AbstractCegarLoop]: Abstraction has 1226 states and 1657 transitions. [2023-11-29 04:57:52,558 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 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) [2023-11-29 04:57:52,559 INFO L276 IsEmpty]: Start isEmpty. Operand 1226 states and 1657 transitions. [2023-11-29 04:57:52,559 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2023-11-29 04:57:52,559 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 04:57:52,559 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:57:52,562 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b425b1b8-e56b-4a99-86a6-15bfbfde3f34/bin/uautomizer-verify-BQ2R08f2Ya/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 (6)] Ended with exit code 0 [2023-11-29 04:57:52,762 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b425b1b8-e56b-4a99-86a6-15bfbfde3f34/bin/uautomizer-verify-BQ2R08f2Ya/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 [2023-11-29 04:57:52,762 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, alt_mallocErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alt_mallocErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 525 more)] === [2023-11-29 04:57:52,762 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:57:52,762 INFO L85 PathProgramCache]: Analyzing trace with hash -3807760, now seen corresponding path program 1 times [2023-11-29 04:57:52,763 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 04:57:52,763 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1619118532] [2023-11-29 04:57:52,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:57:52,763 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 [2023-11-29 04:57:52,763 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b425b1b8-e56b-4a99-86a6-15bfbfde3f34/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 04:57:52,764 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b425b1b8-e56b-4a99-86a6-15bfbfde3f34/bin/uautomizer-verify-BQ2R08f2Ya/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) [2023-11-29 04:57:52,764 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b425b1b8-e56b-4a99-86a6-15bfbfde3f34/bin/uautomizer-verify-BQ2R08f2Ya/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 (7)] Waiting until timeout for monitored process [2023-11-29 04:57:52,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:57:52,882 INFO L262 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-29 04:57:52,885 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:57:52,941 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 04:57:52,941 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 04:57:52,941 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 04:57:52,941 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1619118532] [2023-11-29 04:57:52,942 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1619118532] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:57:52,942 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 04:57:52,942 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 04:57:52,942 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [251619317] [2023-11-29 04:57:52,942 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:57:52,942 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 04:57:52,942 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 04:57:52,943 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 04:57:52,943 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 04:57:52,943 INFO L87 Difference]: Start difference. First operand 1226 states and 1657 transitions. Second operand has 4 states, 4 states have (on average 2.75) internal successors, (11), 3 states have internal predecessors, (11), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:57:54,776 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 04:57:54,776 INFO L93 Difference]: Finished difference Result 1658 states and 2181 transitions. [2023-11-29 04:57:54,777 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-29 04:57:54,777 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 3 states have internal predecessors, (11), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2023-11-29 04:57:54,778 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 04:57:54,784 INFO L225 Difference]: With dead ends: 1658 [2023-11-29 04:57:54,784 INFO L226 Difference]: Without dead ends: 1658 [2023-11-29 04:57:54,784 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-29 04:57:54,785 INFO L413 NwaCegarLoop]: 922 mSDtfsCounter, 494 mSDsluCounter, 1559 mSDsCounter, 0 mSdLazyCounter, 576 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 503 SdHoareTripleChecker+Valid, 2481 SdHoareTripleChecker+Invalid, 589 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 576 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2023-11-29 04:57:54,785 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [503 Valid, 2481 Invalid, 589 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 576 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2023-11-29 04:57:54,788 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1658 states. [2023-11-29 04:57:54,811 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1658 to 1436. [2023-11-29 04:57:54,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1436 states, 954 states have (on average 2.190775681341719) internal successors, (2090), 1416 states have internal predecessors, (2090), 19 states have call successors, (19), 5 states have call predecessors, (19), 4 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2023-11-29 04:57:54,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1436 states to 1436 states and 2124 transitions. [2023-11-29 04:57:54,821 INFO L78 Accepts]: Start accepts. Automaton has 1436 states and 2124 transitions. Word has length 12 [2023-11-29 04:57:54,821 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 04:57:54,821 INFO L495 AbstractCegarLoop]: Abstraction has 1436 states and 2124 transitions. [2023-11-29 04:57:54,821 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 3 states have internal predecessors, (11), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:57:54,821 INFO L276 IsEmpty]: Start isEmpty. Operand 1436 states and 2124 transitions. [2023-11-29 04:57:54,822 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2023-11-29 04:57:54,822 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 04:57:54,822 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:57:54,824 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b425b1b8-e56b-4a99-86a6-15bfbfde3f34/bin/uautomizer-verify-BQ2R08f2Ya/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 (7)] Ended with exit code 0 [2023-11-29 04:57:55,022 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b425b1b8-e56b-4a99-86a6-15bfbfde3f34/bin/uautomizer-verify-BQ2R08f2Ya/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 [2023-11-29 04:57:55,023 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr332REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, alt_mallocErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alt_mallocErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 525 more)] === [2023-11-29 04:57:55,023 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:57:55,023 INFO L85 PathProgramCache]: Analyzing trace with hash -592731144, now seen corresponding path program 1 times [2023-11-29 04:57:55,023 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 04:57:55,023 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [992753381] [2023-11-29 04:57:55,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:57:55,024 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 [2023-11-29 04:57:55,024 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b425b1b8-e56b-4a99-86a6-15bfbfde3f34/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 04:57:55,024 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b425b1b8-e56b-4a99-86a6-15bfbfde3f34/bin/uautomizer-verify-BQ2R08f2Ya/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) [2023-11-29 04:57:55,025 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b425b1b8-e56b-4a99-86a6-15bfbfde3f34/bin/uautomizer-verify-BQ2R08f2Ya/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 (8)] Waiting until timeout for monitored process [2023-11-29 04:57:55,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:57:55,179 INFO L262 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-29 04:57:55,181 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:57:55,189 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 04:57:55,190 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 04:57:55,190 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 04:57:55,190 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [992753381] [2023-11-29 04:57:55,190 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [992753381] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:57:55,190 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 04:57:55,190 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 04:57:55,190 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [654304676] [2023-11-29 04:57:55,191 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:57:55,191 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 04:57:55,191 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 04:57:55,192 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 04:57:55,192 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 04:57:55,192 INFO L87 Difference]: Start difference. First operand 1436 states and 2124 transitions. Second operand has 3 states, 3 states have (on average 4.0) internal successors, (12), 3 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) [2023-11-29 04:57:55,912 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 04:57:55,912 INFO L93 Difference]: Finished difference Result 1352 states and 1964 transitions. [2023-11-29 04:57:55,914 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 04:57:55,914 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.0) internal successors, (12), 3 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 [2023-11-29 04:57:55,914 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 04:57:55,920 INFO L225 Difference]: With dead ends: 1352 [2023-11-29 04:57:55,920 INFO L226 Difference]: Without dead ends: 1352 [2023-11-29 04:57:55,920 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 04:57:55,921 INFO L413 NwaCegarLoop]: 816 mSDtfsCounter, 70 mSDsluCounter, 767 mSDsCounter, 0 mSdLazyCounter, 208 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 70 SdHoareTripleChecker+Valid, 1583 SdHoareTripleChecker+Invalid, 208 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 208 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-11-29 04:57:55,921 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [70 Valid, 1583 Invalid, 208 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 208 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-11-29 04:57:55,923 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1352 states. [2023-11-29 04:57:55,943 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1352 to 1352. [2023-11-29 04:57:55,945 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1352 states, 894 states have (on average 2.1588366890380315) internal successors, (1930), 1332 states have internal predecessors, (1930), 19 states have call successors, (19), 5 states have call predecessors, (19), 4 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2023-11-29 04:57:55,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1352 states to 1352 states and 1964 transitions. [2023-11-29 04:57:55,951 INFO L78 Accepts]: Start accepts. Automaton has 1352 states and 1964 transitions. Word has length 12 [2023-11-29 04:57:55,951 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 04:57:55,951 INFO L495 AbstractCegarLoop]: Abstraction has 1352 states and 1964 transitions. [2023-11-29 04:57:55,952 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.0) internal successors, (12), 3 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) [2023-11-29 04:57:55,952 INFO L276 IsEmpty]: Start isEmpty. Operand 1352 states and 1964 transitions. [2023-11-29 04:57:55,952 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2023-11-29 04:57:55,952 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 04:57:55,953 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:57:55,955 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b425b1b8-e56b-4a99-86a6-15bfbfde3f34/bin/uautomizer-verify-BQ2R08f2Ya/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 (8)] Ended with exit code 0 [2023-11-29 04:57:56,153 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b425b1b8-e56b-4a99-86a6-15bfbfde3f34/bin/uautomizer-verify-BQ2R08f2Ya/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 [2023-11-29 04:57:56,153 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, alt_mallocErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alt_mallocErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 525 more)] === [2023-11-29 04:57:56,154 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:57:56,154 INFO L85 PathProgramCache]: Analyzing trace with hash -1869888457, now seen corresponding path program 1 times [2023-11-29 04:57:56,154 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 04:57:56,154 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1445401707] [2023-11-29 04:57:56,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:57:56,155 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 [2023-11-29 04:57:56,155 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b425b1b8-e56b-4a99-86a6-15bfbfde3f34/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 04:57:56,156 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b425b1b8-e56b-4a99-86a6-15bfbfde3f34/bin/uautomizer-verify-BQ2R08f2Ya/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) [2023-11-29 04:57:56,157 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b425b1b8-e56b-4a99-86a6-15bfbfde3f34/bin/uautomizer-verify-BQ2R08f2Ya/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 (9)] Waiting until timeout for monitored process [2023-11-29 04:57:56,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:57:56,346 INFO L262 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-29 04:57:56,348 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:57:56,354 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-29 04:57:56,355 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-29 04:57:56,355 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-29 04:57:56,362 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 30 treesize of output 39 [2023-11-29 04:57:56,420 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 04:57:56,420 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 70 treesize of output 26 [2023-11-29 04:57:56,435 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 04:57:56,435 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 04:57:56,435 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 04:57:56,435 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1445401707] [2023-11-29 04:57:56,436 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1445401707] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:57:56,436 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 04:57:56,436 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 04:57:56,436 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1477498636] [2023-11-29 04:57:56,436 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:57:56,437 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 04:57:56,437 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 04:57:56,437 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 04:57:56,437 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 04:57:56,437 INFO L87 Difference]: Start difference. First operand 1352 states and 1964 transitions. Second operand has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:57:58,267 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 04:57:58,267 INFO L93 Difference]: Finished difference Result 1868 states and 2266 transitions. [2023-11-29 04:57:58,267 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 04:57:58,267 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2023-11-29 04:57:58,268 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 04:57:58,274 INFO L225 Difference]: With dead ends: 1868 [2023-11-29 04:57:58,274 INFO L226 Difference]: Without dead ends: 1868 [2023-11-29 04:57:58,274 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-29 04:57:58,275 INFO L413 NwaCegarLoop]: 876 mSDtfsCounter, 821 mSDsluCounter, 1670 mSDsCounter, 0 mSdLazyCounter, 386 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 833 SdHoareTripleChecker+Valid, 2546 SdHoareTripleChecker+Invalid, 387 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 386 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2023-11-29 04:57:58,275 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [833 Valid, 2546 Invalid, 387 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 386 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2023-11-29 04:57:58,277 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1868 states. [2023-11-29 04:57:58,291 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1868 to 1085. [2023-11-29 04:57:58,293 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1085 states, 629 states have (on average 2.1446740858505566) internal successors, (1349), 1067 states have internal predecessors, (1349), 17 states have call successors, (17), 5 states have call predecessors, (17), 4 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2023-11-29 04:57:58,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1085 states to 1085 states and 1379 transitions. [2023-11-29 04:57:58,297 INFO L78 Accepts]: Start accepts. Automaton has 1085 states and 1379 transitions. Word has length 15 [2023-11-29 04:57:58,297 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 04:57:58,297 INFO L495 AbstractCegarLoop]: Abstraction has 1085 states and 1379 transitions. [2023-11-29 04:57:58,298 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:57:58,298 INFO L276 IsEmpty]: Start isEmpty. Operand 1085 states and 1379 transitions. [2023-11-29 04:57:58,298 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2023-11-29 04:57:58,298 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 04:57:58,298 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:57:58,302 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b425b1b8-e56b-4a99-86a6-15bfbfde3f34/bin/uautomizer-verify-BQ2R08f2Ya/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 (9)] Ended with exit code 0 [2023-11-29 04:57:58,499 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b425b1b8-e56b-4a99-86a6-15bfbfde3f34/bin/uautomizer-verify-BQ2R08f2Ya/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 [2023-11-29 04:57:58,499 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr14REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, alt_mallocErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alt_mallocErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 525 more)] === [2023-11-29 04:57:58,499 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:57:58,500 INFO L85 PathProgramCache]: Analyzing trace with hash 1792162074, now seen corresponding path program 1 times [2023-11-29 04:57:58,500 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 04:57:58,500 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [629772697] [2023-11-29 04:57:58,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:57:58,500 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 [2023-11-29 04:57:58,500 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b425b1b8-e56b-4a99-86a6-15bfbfde3f34/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 04:57:58,501 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b425b1b8-e56b-4a99-86a6-15bfbfde3f34/bin/uautomizer-verify-BQ2R08f2Ya/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) [2023-11-29 04:57:58,502 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b425b1b8-e56b-4a99-86a6-15bfbfde3f34/bin/uautomizer-verify-BQ2R08f2Ya/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 (10)] Waiting until timeout for monitored process [2023-11-29 04:57:58,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:57:58,649 INFO L262 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-29 04:57:58,651 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:57:58,657 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 04:57:58,658 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 04:57:58,658 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 04:57:58,658 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [629772697] [2023-11-29 04:57:58,658 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [629772697] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:57:58,658 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 04:57:58,658 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 04:57:58,658 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1510142199] [2023-11-29 04:57:58,658 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:57:58,658 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 04:57:58,659 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 04:57:58,659 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 04:57:58,659 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 04:57:58,659 INFO L87 Difference]: Start difference. First operand 1085 states and 1379 transitions. Second operand has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 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) [2023-11-29 04:57:59,453 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 04:57:59,453 INFO L93 Difference]: Finished difference Result 1031 states and 1299 transitions. [2023-11-29 04:57:59,455 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 04:57:59,455 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 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 [2023-11-29 04:57:59,455 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 04:57:59,459 INFO L225 Difference]: With dead ends: 1031 [2023-11-29 04:57:59,459 INFO L226 Difference]: Without dead ends: 1031 [2023-11-29 04:57:59,459 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 04:57:59,460 INFO L413 NwaCegarLoop]: 779 mSDtfsCounter, 70 mSDsluCounter, 730 mSDsCounter, 0 mSdLazyCounter, 202 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 70 SdHoareTripleChecker+Valid, 1509 SdHoareTripleChecker+Invalid, 202 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 202 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-11-29 04:57:59,460 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [70 Valid, 1509 Invalid, 202 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 202 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-11-29 04:57:59,462 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1031 states. [2023-11-29 04:57:59,478 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1031 to 1031. [2023-11-29 04:57:59,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1031 states, 599 states have (on average 2.1185308848080133) internal successors, (1269), 1013 states have internal predecessors, (1269), 17 states have call successors, (17), 5 states have call predecessors, (17), 4 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2023-11-29 04:57:59,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1031 states to 1031 states and 1299 transitions. [2023-11-29 04:57:59,482 INFO L78 Accepts]: Start accepts. Automaton has 1031 states and 1299 transitions. Word has length 15 [2023-11-29 04:57:59,482 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 04:57:59,482 INFO L495 AbstractCegarLoop]: Abstraction has 1031 states and 1299 transitions. [2023-11-29 04:57:59,483 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 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) [2023-11-29 04:57:59,483 INFO L276 IsEmpty]: Start isEmpty. Operand 1031 states and 1299 transitions. [2023-11-29 04:57:59,483 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2023-11-29 04:57:59,483 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 04:57:59,483 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:57:59,486 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b425b1b8-e56b-4a99-86a6-15bfbfde3f34/bin/uautomizer-verify-BQ2R08f2Ya/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 (10)] Ended with exit code 0 [2023-11-29 04:57:59,684 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b425b1b8-e56b-4a99-86a6-15bfbfde3f34/bin/uautomizer-verify-BQ2R08f2Ya/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 [2023-11-29 04:57:59,684 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr38REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, alt_mallocErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alt_mallocErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 525 more)] === [2023-11-29 04:57:59,684 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:57:59,684 INFO L85 PathProgramCache]: Analyzing trace with hash -14134636, now seen corresponding path program 1 times [2023-11-29 04:57:59,685 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 04:57:59,685 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1623969237] [2023-11-29 04:57:59,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:57:59,685 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 [2023-11-29 04:57:59,685 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b425b1b8-e56b-4a99-86a6-15bfbfde3f34/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 04:57:59,686 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b425b1b8-e56b-4a99-86a6-15bfbfde3f34/bin/uautomizer-verify-BQ2R08f2Ya/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) [2023-11-29 04:57:59,688 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b425b1b8-e56b-4a99-86a6-15bfbfde3f34/bin/uautomizer-verify-BQ2R08f2Ya/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 (11)] Waiting until timeout for monitored process [2023-11-29 04:57:59,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:57:59,868 INFO L262 TraceCheckSpWp]: Trace formula consists of 142 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-29 04:57:59,870 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:57:59,887 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 04:57:59,887 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 04:57:59,887 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 04:57:59,887 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1623969237] [2023-11-29 04:57:59,887 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1623969237] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:57:59,888 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 04:57:59,888 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 04:57:59,888 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [587441735] [2023-11-29 04:57:59,888 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:57:59,888 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 04:57:59,888 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 04:57:59,889 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 04:57:59,889 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 04:57:59,889 INFO L87 Difference]: Start difference. First operand 1031 states and 1299 transitions. Second operand has 4 states, 4 states have (on average 4.25) internal successors, (17), 4 states have internal predecessors, (17), 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) [2023-11-29 04:58:00,792 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 04:58:00,792 INFO L93 Difference]: Finished difference Result 1017 states and 1257 transitions. [2023-11-29 04:58:00,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 04:58:00,794 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.25) internal successors, (17), 4 states have internal predecessors, (17), 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 17 [2023-11-29 04:58:00,794 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 04:58:00,798 INFO L225 Difference]: With dead ends: 1017 [2023-11-29 04:58:00,798 INFO L226 Difference]: Without dead ends: 1017 [2023-11-29 04:58:00,798 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-29 04:58:00,799 INFO L413 NwaCegarLoop]: 748 mSDtfsCounter, 58 mSDsluCounter, 1472 mSDsCounter, 0 mSdLazyCounter, 308 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 58 SdHoareTripleChecker+Valid, 2220 SdHoareTripleChecker+Invalid, 330 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 308 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-11-29 04:58:00,799 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [58 Valid, 2220 Invalid, 330 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 308 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-11-29 04:58:00,800 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1017 states. [2023-11-29 04:58:00,812 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1017 to 1015. [2023-11-29 04:58:00,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1015 states, 597 states have (on average 2.0519262981574538) internal successors, (1225), 997 states have internal predecessors, (1225), 17 states have call successors, (17), 5 states have call predecessors, (17), 4 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2023-11-29 04:58:00,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1015 states to 1015 states and 1255 transitions. [2023-11-29 04:58:00,817 INFO L78 Accepts]: Start accepts. Automaton has 1015 states and 1255 transitions. Word has length 17 [2023-11-29 04:58:00,817 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 04:58:00,817 INFO L495 AbstractCegarLoop]: Abstraction has 1015 states and 1255 transitions. [2023-11-29 04:58:00,817 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.25) internal successors, (17), 4 states have internal predecessors, (17), 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) [2023-11-29 04:58:00,818 INFO L276 IsEmpty]: Start isEmpty. Operand 1015 states and 1255 transitions. [2023-11-29 04:58:00,818 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2023-11-29 04:58:00,818 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 04:58:00,819 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:58:00,823 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b425b1b8-e56b-4a99-86a6-15bfbfde3f34/bin/uautomizer-verify-BQ2R08f2Ya/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 (11)] Forceful destruction successful, exit code 0 [2023-11-29 04:58:01,019 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b425b1b8-e56b-4a99-86a6-15bfbfde3f34/bin/uautomizer-verify-BQ2R08f2Ya/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 [2023-11-29 04:58:01,019 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr53REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, alt_mallocErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alt_mallocErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 525 more)] === [2023-11-29 04:58:01,019 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:58:01,019 INFO L85 PathProgramCache]: Analyzing trace with hash 734266083, now seen corresponding path program 1 times [2023-11-29 04:58:01,020 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 04:58:01,020 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [527170989] [2023-11-29 04:58:01,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:58:01,020 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 [2023-11-29 04:58:01,020 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b425b1b8-e56b-4a99-86a6-15bfbfde3f34/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 04:58:01,021 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b425b1b8-e56b-4a99-86a6-15bfbfde3f34/bin/uautomizer-verify-BQ2R08f2Ya/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) [2023-11-29 04:58:01,022 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b425b1b8-e56b-4a99-86a6-15bfbfde3f34/bin/uautomizer-verify-BQ2R08f2Ya/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 (12)] Waiting until timeout for monitored process [2023-11-29 04:58:01,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:58:01,182 INFO L262 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-29 04:58:01,184 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:58:01,192 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 [2023-11-29 04:58:01,362 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 04:58:01,362 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 04:58:01,377 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 04:58:01,378 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [527170989] [2023-11-29 04:58:01,378 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [527170989] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:58:01,378 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 04:58:01,378 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 04:58:01,378 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1375539902] [2023-11-29 04:58:01,378 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:58:01,379 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 04:58:01,379 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 04:58:01,379 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 04:58:01,379 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 04:58:01,379 INFO L87 Difference]: Start difference. First operand 1015 states and 1255 transitions. Second operand has 4 states, 3 states have (on average 10.333333333333334) internal successors, (31), 4 states have internal predecessors, (31), 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) [2023-11-29 04:58:04,879 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 04:58:04,880 INFO L93 Difference]: Finished difference Result 1482 states and 1848 transitions. [2023-11-29 04:58:04,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 04:58:04,881 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 10.333333333333334) internal successors, (31), 4 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 31 [2023-11-29 04:58:04,881 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 04:58:04,886 INFO L225 Difference]: With dead ends: 1482 [2023-11-29 04:58:04,887 INFO L226 Difference]: Without dead ends: 1482 [2023-11-29 04:58:04,887 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-29 04:58:04,887 INFO L413 NwaCegarLoop]: 948 mSDtfsCounter, 523 mSDsluCounter, 937 mSDsCounter, 0 mSdLazyCounter, 1411 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 525 SdHoareTripleChecker+Valid, 1885 SdHoareTripleChecker+Invalid, 1414 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 1411 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2023-11-29 04:58:04,888 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [525 Valid, 1885 Invalid, 1414 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 1411 Invalid, 0 Unknown, 0 Unchecked, 3.4s Time] [2023-11-29 04:58:04,890 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1482 states. [2023-11-29 04:58:04,899 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1482 to 1011. [2023-11-29 04:58:04,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1011 states, 597 states have (on average 2.0385259631490786) internal successors, (1217), 993 states have internal predecessors, (1217), 17 states have call successors, (17), 5 states have call predecessors, (17), 4 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2023-11-29 04:58:04,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1011 states to 1011 states and 1247 transitions. [2023-11-29 04:58:04,903 INFO L78 Accepts]: Start accepts. Automaton has 1011 states and 1247 transitions. Word has length 31 [2023-11-29 04:58:04,903 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 04:58:04,903 INFO L495 AbstractCegarLoop]: Abstraction has 1011 states and 1247 transitions. [2023-11-29 04:58:04,903 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 10.333333333333334) internal successors, (31), 4 states have internal predecessors, (31), 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) [2023-11-29 04:58:04,903 INFO L276 IsEmpty]: Start isEmpty. Operand 1011 states and 1247 transitions. [2023-11-29 04:58:04,904 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2023-11-29 04:58:04,904 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 04:58:04,904 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:58:04,908 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b425b1b8-e56b-4a99-86a6-15bfbfde3f34/bin/uautomizer-verify-BQ2R08f2Ya/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 (12)] Ended with exit code 0 [2023-11-29 04:58:05,104 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b425b1b8-e56b-4a99-86a6-15bfbfde3f34/bin/uautomizer-verify-BQ2R08f2Ya/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 [2023-11-29 04:58:05,104 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr52REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, alt_mallocErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alt_mallocErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 525 more)] === [2023-11-29 04:58:05,105 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:58:05,105 INFO L85 PathProgramCache]: Analyzing trace with hash 734266082, now seen corresponding path program 1 times [2023-11-29 04:58:05,105 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 04:58:05,105 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [64752820] [2023-11-29 04:58:05,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:58:05,105 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 [2023-11-29 04:58:05,106 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b425b1b8-e56b-4a99-86a6-15bfbfde3f34/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 04:58:05,106 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b425b1b8-e56b-4a99-86a6-15bfbfde3f34/bin/uautomizer-verify-BQ2R08f2Ya/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) [2023-11-29 04:58:05,113 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b425b1b8-e56b-4a99-86a6-15bfbfde3f34/bin/uautomizer-verify-BQ2R08f2Ya/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 (13)] Waiting until timeout for monitored process [2023-11-29 04:58:05,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:58:05,301 INFO L262 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-29 04:58:05,303 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:58:05,307 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 [2023-11-29 04:58:05,368 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 04:58:05,368 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 04:58:05,368 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 04:58:05,368 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [64752820] [2023-11-29 04:58:05,369 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [64752820] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:58:05,369 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 04:58:05,369 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 04:58:05,369 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1522575927] [2023-11-29 04:58:05,369 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:58:05,369 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 04:58:05,369 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 04:58:05,370 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 04:58:05,370 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 04:58:05,370 INFO L87 Difference]: Start difference. First operand 1011 states and 1247 transitions. Second operand has 4 states, 3 states have (on average 10.333333333333334) internal successors, (31), 4 states have internal predecessors, (31), 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) [2023-11-29 04:58:07,798 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 04:58:07,798 INFO L93 Difference]: Finished difference Result 1391 states and 1749 transitions. [2023-11-29 04:58:07,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 04:58:07,799 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 10.333333333333334) internal successors, (31), 4 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 31 [2023-11-29 04:58:07,800 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 04:58:07,805 INFO L225 Difference]: With dead ends: 1391 [2023-11-29 04:58:07,805 INFO L226 Difference]: Without dead ends: 1391 [2023-11-29 04:58:07,805 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-29 04:58:07,805 INFO L413 NwaCegarLoop]: 434 mSDtfsCounter, 754 mSDsluCounter, 598 mSDsCounter, 0 mSdLazyCounter, 1092 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 757 SdHoareTripleChecker+Valid, 1032 SdHoareTripleChecker+Invalid, 1100 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 1092 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2023-11-29 04:58:07,805 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [757 Valid, 1032 Invalid, 1100 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 1092 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2023-11-29 04:58:07,807 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1391 states. [2023-11-29 04:58:07,822 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1391 to 1007. [2023-11-29 04:58:07,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1007 states, 597 states have (on average 2.0251256281407035) internal successors, (1209), 989 states have internal predecessors, (1209), 17 states have call successors, (17), 5 states have call predecessors, (17), 4 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2023-11-29 04:58:07,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1007 states to 1007 states and 1239 transitions. [2023-11-29 04:58:07,825 INFO L78 Accepts]: Start accepts. Automaton has 1007 states and 1239 transitions. Word has length 31 [2023-11-29 04:58:07,825 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 04:58:07,825 INFO L495 AbstractCegarLoop]: Abstraction has 1007 states and 1239 transitions. [2023-11-29 04:58:07,825 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 10.333333333333334) internal successors, (31), 4 states have internal predecessors, (31), 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) [2023-11-29 04:58:07,825 INFO L276 IsEmpty]: Start isEmpty. Operand 1007 states and 1239 transitions. [2023-11-29 04:58:07,826 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2023-11-29 04:58:07,827 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 04:58:07,827 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:58:07,830 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b425b1b8-e56b-4a99-86a6-15bfbfde3f34/bin/uautomizer-verify-BQ2R08f2Ya/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 (13)] Ended with exit code 0 [2023-11-29 04:58:08,027 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b425b1b8-e56b-4a99-86a6-15bfbfde3f34/bin/uautomizer-verify-BQ2R08f2Ya/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 [2023-11-29 04:58:08,027 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting alt_mallocErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, alt_mallocErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alt_mallocErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 525 more)] === [2023-11-29 04:58:08,028 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:58:08,028 INFO L85 PathProgramCache]: Analyzing trace with hash -2030840777, now seen corresponding path program 1 times [2023-11-29 04:58:08,028 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 04:58:08,028 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [157476366] [2023-11-29 04:58:08,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:58:08,029 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 [2023-11-29 04:58:08,029 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b425b1b8-e56b-4a99-86a6-15bfbfde3f34/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 04:58:08,029 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b425b1b8-e56b-4a99-86a6-15bfbfde3f34/bin/uautomizer-verify-BQ2R08f2Ya/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) [2023-11-29 04:58:08,030 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b425b1b8-e56b-4a99-86a6-15bfbfde3f34/bin/uautomizer-verify-BQ2R08f2Ya/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 (14)] Waiting until timeout for monitored process [2023-11-29 04:58:08,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:58:08,238 INFO L262 TraceCheckSpWp]: Trace formula consists of 271 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-29 04:58:08,240 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:58:08,275 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 04:58:08,276 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 04:58:08,276 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 04:58:08,276 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [157476366] [2023-11-29 04:58:08,276 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [157476366] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:58:08,276 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 04:58:08,276 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 04:58:08,276 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1250764420] [2023-11-29 04:58:08,276 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:58:08,277 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 04:58:08,277 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 04:58:08,277 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 04:58:08,277 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 04:58:08,277 INFO L87 Difference]: Start difference. First operand 1007 states and 1239 transitions. Second operand has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:58:09,087 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 04:58:09,087 INFO L93 Difference]: Finished difference Result 995 states and 1219 transitions. [2023-11-29 04:58:09,088 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 04:58:09,088 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 51 [2023-11-29 04:58:09,089 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 04:58:09,092 INFO L225 Difference]: With dead ends: 995 [2023-11-29 04:58:09,092 INFO L226 Difference]: Without dead ends: 995 [2023-11-29 04:58:09,092 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-29 04:58:09,093 INFO L413 NwaCegarLoop]: 742 mSDtfsCounter, 23 mSDsluCounter, 1464 mSDsCounter, 0 mSdLazyCounter, 304 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 2206 SdHoareTripleChecker+Invalid, 310 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 304 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-11-29 04:58:09,093 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 2206 Invalid, 310 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 304 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-11-29 04:58:09,095 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 995 states. [2023-11-29 04:58:09,103 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 995 to 995. [2023-11-29 04:58:09,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 995 states, 585 states have (on average 2.0324786324786324) internal successors, (1189), 977 states have internal predecessors, (1189), 17 states have call successors, (17), 5 states have call predecessors, (17), 4 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2023-11-29 04:58:09,106 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 995 states to 995 states and 1219 transitions. [2023-11-29 04:58:09,106 INFO L78 Accepts]: Start accepts. Automaton has 995 states and 1219 transitions. Word has length 51 [2023-11-29 04:58:09,106 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 04:58:09,106 INFO L495 AbstractCegarLoop]: Abstraction has 995 states and 1219 transitions. [2023-11-29 04:58:09,106 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:58:09,106 INFO L276 IsEmpty]: Start isEmpty. Operand 995 states and 1219 transitions. [2023-11-29 04:58:09,107 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2023-11-29 04:58:09,107 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 04:58:09,107 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:58:09,111 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b425b1b8-e56b-4a99-86a6-15bfbfde3f34/bin/uautomizer-verify-BQ2R08f2Ya/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 (14)] Forceful destruction successful, exit code 0 [2023-11-29 04:58:09,308 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b425b1b8-e56b-4a99-86a6-15bfbfde3f34/bin/uautomizer-verify-BQ2R08f2Ya/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 [2023-11-29 04:58:09,308 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting alt_mallocErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, alt_mallocErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alt_mallocErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 525 more)] === [2023-11-29 04:58:09,308 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:58:09,308 INFO L85 PathProgramCache]: Analyzing trace with hash 1551890552, now seen corresponding path program 1 times [2023-11-29 04:58:09,309 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 04:58:09,309 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1605841136] [2023-11-29 04:58:09,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:58:09,309 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 [2023-11-29 04:58:09,309 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b425b1b8-e56b-4a99-86a6-15bfbfde3f34/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 04:58:09,310 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b425b1b8-e56b-4a99-86a6-15bfbfde3f34/bin/uautomizer-verify-BQ2R08f2Ya/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) [2023-11-29 04:58:09,310 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b425b1b8-e56b-4a99-86a6-15bfbfde3f34/bin/uautomizer-verify-BQ2R08f2Ya/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 (15)] Waiting until timeout for monitored process [2023-11-29 04:58:09,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:58:09,702 INFO L262 TraceCheckSpWp]: Trace formula consists of 291 conjuncts, 10 conjunts are in the unsatisfiable core [2023-11-29 04:58:09,706 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:58:09,732 INFO L349 Elim1Store]: treesize reduction 24, result has 33.3 percent of original size [2023-11-29 04:58:09,732 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 [2023-11-29 04:58:09,785 INFO L349 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2023-11-29 04:58:09,785 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 20 [2023-11-29 04:58:10,071 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 04:58:10,071 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 04:58:10,072 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 04:58:10,072 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1605841136] [2023-11-29 04:58:10,072 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1605841136] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:58:10,072 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 04:58:10,072 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-29 04:58:10,072 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [669251706] [2023-11-29 04:58:10,072 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:58:10,073 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 04:58:10,073 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 04:58:10,073 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 04:58:10,074 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 04:58:10,074 INFO L87 Difference]: Start difference. First operand 995 states and 1219 transitions. Second operand has 3 states, 2 states have (on average 27.0) internal successors, (54), 2 states have internal predecessors, (54), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:58:12,280 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 04:58:12,280 INFO L93 Difference]: Finished difference Result 1813 states and 2222 transitions. [2023-11-29 04:58:12,281 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 04:58:12,281 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 27.0) internal successors, (54), 2 states have internal predecessors, (54), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 55 [2023-11-29 04:58:12,282 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 04:58:12,291 INFO L225 Difference]: With dead ends: 1813 [2023-11-29 04:58:12,291 INFO L226 Difference]: Without dead ends: 1813 [2023-11-29 04:58:12,291 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 52 SyntacticMatches, 1 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 04:58:12,292 INFO L413 NwaCegarLoop]: 480 mSDtfsCounter, 713 mSDsluCounter, 438 mSDsCounter, 0 mSdLazyCounter, 789 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 713 SdHoareTripleChecker+Valid, 918 SdHoareTripleChecker+Invalid, 792 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 789 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2023-11-29 04:58:12,292 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [713 Valid, 918 Invalid, 792 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 789 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2023-11-29 04:58:12,295 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1813 states. [2023-11-29 04:58:12,313 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1813 to 1343. [2023-11-29 04:58:12,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1343 states, 918 states have (on average 2.02723311546841) internal successors, (1861), 1313 states have internal predecessors, (1861), 29 states have call successors, (29), 9 states have call predecessors, (29), 7 states have return successors, (25), 22 states have call predecessors, (25), 25 states have call successors, (25) [2023-11-29 04:58:12,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1343 states to 1343 states and 1915 transitions. [2023-11-29 04:58:12,317 INFO L78 Accepts]: Start accepts. Automaton has 1343 states and 1915 transitions. Word has length 55 [2023-11-29 04:58:12,318 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 04:58:12,318 INFO L495 AbstractCegarLoop]: Abstraction has 1343 states and 1915 transitions. [2023-11-29 04:58:12,318 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 27.0) internal successors, (54), 2 states have internal predecessors, (54), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:58:12,318 INFO L276 IsEmpty]: Start isEmpty. Operand 1343 states and 1915 transitions. [2023-11-29 04:58:12,318 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2023-11-29 04:58:12,319 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 04:58:12,319 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:58:12,325 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b425b1b8-e56b-4a99-86a6-15bfbfde3f34/bin/uautomizer-verify-BQ2R08f2Ya/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 (15)] Forceful destruction successful, exit code 0 [2023-11-29 04:58:12,524 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b425b1b8-e56b-4a99-86a6-15bfbfde3f34/bin/uautomizer-verify-BQ2R08f2Ya/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 [2023-11-29 04:58:12,524 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting alt_mallocErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, alt_mallocErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alt_mallocErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 525 more)] === [2023-11-29 04:58:12,524 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:58:12,524 INFO L85 PathProgramCache]: Analyzing trace with hash 1551890553, now seen corresponding path program 1 times [2023-11-29 04:58:12,525 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 04:58:12,525 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1518294990] [2023-11-29 04:58:12,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:58:12,525 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 [2023-11-29 04:58:12,525 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b425b1b8-e56b-4a99-86a6-15bfbfde3f34/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 04:58:12,526 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b425b1b8-e56b-4a99-86a6-15bfbfde3f34/bin/uautomizer-verify-BQ2R08f2Ya/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) [2023-11-29 04:58:12,527 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b425b1b8-e56b-4a99-86a6-15bfbfde3f34/bin/uautomizer-verify-BQ2R08f2Ya/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 (16)] Waiting until timeout for monitored process [2023-11-29 04:58:12,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:58:12,852 INFO L262 TraceCheckSpWp]: Trace formula consists of 291 conjuncts, 16 conjunts are in the unsatisfiable core [2023-11-29 04:58:12,854 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:58:12,875 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 04:58:12,875 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 [2023-11-29 04:58:12,940 INFO L349 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2023-11-29 04:58:12,941 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 14 [2023-11-29 04:58:13,522 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 04:58:13,522 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 04:58:13,522 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 04:58:13,522 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1518294990] [2023-11-29 04:58:13,523 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1518294990] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:58:13,523 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 04:58:13,523 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 04:58:13,523 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1512482980] [2023-11-29 04:58:13,523 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:58:13,524 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 04:58:13,524 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 04:58:13,524 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 04:58:13,524 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 04:58:13,525 INFO L87 Difference]: Start difference. First operand 1343 states and 1915 transitions. Second operand has 4 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:58:16,326 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 04:58:16,326 INFO L93 Difference]: Finished difference Result 1348 states and 1921 transitions. [2023-11-29 04:58:16,327 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 04:58:16,327 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 55 [2023-11-29 04:58:16,327 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 04:58:16,333 INFO L225 Difference]: With dead ends: 1348 [2023-11-29 04:58:16,333 INFO L226 Difference]: Without dead ends: 1348 [2023-11-29 04:58:16,333 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 51 SyntacticMatches, 1 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 04:58:16,333 INFO L413 NwaCegarLoop]: 747 mSDtfsCounter, 0 mSDsluCounter, 797 mSDsCounter, 0 mSdLazyCounter, 1007 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1544 SdHoareTripleChecker+Invalid, 1007 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1007 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2023-11-29 04:58:16,334 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1544 Invalid, 1007 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1007 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2023-11-29 04:58:16,336 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1348 states. [2023-11-29 04:58:16,350 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1348 to 1348. [2023-11-29 04:58:16,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1348 states, 922 states have (on average 2.022776572668113) internal successors, (1865), 1317 states have internal predecessors, (1865), 30 states have call successors, (30), 10 states have call predecessors, (30), 7 states have return successors, (26), 22 states have call predecessors, (26), 26 states have call successors, (26) [2023-11-29 04:58:16,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1348 states to 1348 states and 1921 transitions. [2023-11-29 04:58:16,354 INFO L78 Accepts]: Start accepts. Automaton has 1348 states and 1921 transitions. Word has length 55 [2023-11-29 04:58:16,354 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 04:58:16,354 INFO L495 AbstractCegarLoop]: Abstraction has 1348 states and 1921 transitions. [2023-11-29 04:58:16,354 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:58:16,354 INFO L276 IsEmpty]: Start isEmpty. Operand 1348 states and 1921 transitions. [2023-11-29 04:58:16,355 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2023-11-29 04:58:16,355 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 04:58:16,355 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:58:16,361 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b425b1b8-e56b-4a99-86a6-15bfbfde3f34/bin/uautomizer-verify-BQ2R08f2Ya/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 (16)] Ended with exit code 0 [2023-11-29 04:58:16,555 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b425b1b8-e56b-4a99-86a6-15bfbfde3f34/bin/uautomizer-verify-BQ2R08f2Ya/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 [2023-11-29 04:58:16,556 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr70REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, alt_mallocErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alt_mallocErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 525 more)] === [2023-11-29 04:58:16,556 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:58:16,556 INFO L85 PathProgramCache]: Analyzing trace with hash 298511460, now seen corresponding path program 1 times [2023-11-29 04:58:16,556 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 04:58:16,556 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [50487569] [2023-11-29 04:58:16,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:58:16,557 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 [2023-11-29 04:58:16,557 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b425b1b8-e56b-4a99-86a6-15bfbfde3f34/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 04:58:16,558 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b425b1b8-e56b-4a99-86a6-15bfbfde3f34/bin/uautomizer-verify-BQ2R08f2Ya/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) [2023-11-29 04:58:16,558 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b425b1b8-e56b-4a99-86a6-15bfbfde3f34/bin/uautomizer-verify-BQ2R08f2Ya/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 (17)] Waiting until timeout for monitored process [2023-11-29 04:58:16,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:58:16,797 INFO L262 TraceCheckSpWp]: Trace formula consists of 324 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-29 04:58:16,799 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:58:16,913 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 04:58:16,913 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 04:58:16,913 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 04:58:16,913 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [50487569] [2023-11-29 04:58:16,913 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [50487569] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:58:16,913 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 04:58:16,913 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-29 04:58:16,913 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [578496502] [2023-11-29 04:58:16,914 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:58:16,914 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-29 04:58:16,914 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 04:58:16,915 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-29 04:58:16,915 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-29 04:58:16,915 INFO L87 Difference]: Start difference. First operand 1348 states and 1921 transitions. Second operand has 6 states, 6 states have (on average 9.5) internal successors, (57), 4 states have internal predecessors, (57), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-29 04:58:18,542 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 04:58:18,542 INFO L93 Difference]: Finished difference Result 1352 states and 1929 transitions. [2023-11-29 04:58:18,543 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-29 04:58:18,543 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.5) internal successors, (57), 4 states have internal predecessors, (57), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 59 [2023-11-29 04:58:18,544 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 04:58:18,551 INFO L225 Difference]: With dead ends: 1352 [2023-11-29 04:58:18,551 INFO L226 Difference]: Without dead ends: 1352 [2023-11-29 04:58:18,551 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-11-29 04:58:18,551 INFO L413 NwaCegarLoop]: 739 mSDtfsCounter, 19 mSDsluCounter, 2871 mSDsCounter, 0 mSdLazyCounter, 609 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 3610 SdHoareTripleChecker+Invalid, 625 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 609 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2023-11-29 04:58:18,552 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 3610 Invalid, 625 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 609 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2023-11-29 04:58:18,554 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1352 states. [2023-11-29 04:58:18,572 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1352 to 1350. [2023-11-29 04:58:18,573 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1350 states, 923 states have (on average 2.021668472372698) internal successors, (1866), 1318 states have internal predecessors, (1866), 30 states have call successors, (30), 10 states have call predecessors, (30), 8 states have return successors, (29), 22 states have call predecessors, (29), 26 states have call successors, (29) [2023-11-29 04:58:18,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1350 states to 1350 states and 1925 transitions. [2023-11-29 04:58:18,583 INFO L78 Accepts]: Start accepts. Automaton has 1350 states and 1925 transitions. Word has length 59 [2023-11-29 04:58:18,583 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 04:58:18,583 INFO L495 AbstractCegarLoop]: Abstraction has 1350 states and 1925 transitions. [2023-11-29 04:58:18,583 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.5) internal successors, (57), 4 states have internal predecessors, (57), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-29 04:58:18,583 INFO L276 IsEmpty]: Start isEmpty. Operand 1350 states and 1925 transitions. [2023-11-29 04:58:18,584 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2023-11-29 04:58:18,584 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 04:58:18,584 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:58:18,588 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b425b1b8-e56b-4a99-86a6-15bfbfde3f34/bin/uautomizer-verify-BQ2R08f2Ya/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 (17)] Ended with exit code 0 [2023-11-29 04:58:18,784 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b425b1b8-e56b-4a99-86a6-15bfbfde3f34/bin/uautomizer-verify-BQ2R08f2Ya/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 [2023-11-29 04:58:18,784 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, alt_mallocErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alt_mallocErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 525 more)] === [2023-11-29 04:58:18,785 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:58:18,785 INFO L85 PathProgramCache]: Analyzing trace with hash -1320167083, now seen corresponding path program 1 times [2023-11-29 04:58:18,785 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 04:58:18,785 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2024085955] [2023-11-29 04:58:18,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:58:18,785 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 [2023-11-29 04:58:18,786 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b425b1b8-e56b-4a99-86a6-15bfbfde3f34/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 04:58:18,786 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b425b1b8-e56b-4a99-86a6-15bfbfde3f34/bin/uautomizer-verify-BQ2R08f2Ya/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) [2023-11-29 04:58:18,787 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b425b1b8-e56b-4a99-86a6-15bfbfde3f34/bin/uautomizer-verify-BQ2R08f2Ya/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 (18)] Waiting until timeout for monitored process [2023-11-29 04:58:19,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:58:19,094 INFO L262 TraceCheckSpWp]: Trace formula consists of 323 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-29 04:58:19,097 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:58:19,128 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 04:58:19,128 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 04:58:19,128 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 04:58:19,128 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2024085955] [2023-11-29 04:58:19,128 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2024085955] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:58:19,128 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 04:58:19,128 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-29 04:58:19,128 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1429331553] [2023-11-29 04:58:19,128 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:58:19,129 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-29 04:58:19,129 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 04:58:19,129 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-29 04:58:19,129 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-29 04:58:19,129 INFO L87 Difference]: Start difference. First operand 1350 states and 1925 transitions. Second operand has 6 states, 6 states have (on average 9.833333333333334) internal successors, (59), 4 states have internal predecessors, (59), 3 states have call successors, (3), 3 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:58:20,460 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 04:58:20,461 INFO L93 Difference]: Finished difference Result 1374 states and 1949 transitions. [2023-11-29 04:58:20,462 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-29 04:58:20,462 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.833333333333334) internal successors, (59), 4 states have internal predecessors, (59), 3 states have call successors, (3), 3 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 62 [2023-11-29 04:58:20,462 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 04:58:20,467 INFO L225 Difference]: With dead ends: 1374 [2023-11-29 04:58:20,467 INFO L226 Difference]: Without dead ends: 1374 [2023-11-29 04:58:20,467 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 57 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-11-29 04:58:20,467 INFO L413 NwaCegarLoop]: 754 mSDtfsCounter, 16 mSDsluCounter, 3009 mSDsCounter, 0 mSdLazyCounter, 494 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 3763 SdHoareTripleChecker+Invalid, 496 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 494 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-11-29 04:58:20,468 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 3763 Invalid, 496 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 494 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-11-29 04:58:20,469 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1374 states. [2023-11-29 04:58:20,484 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1374 to 1370. [2023-11-29 04:58:20,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1370 states, 937 states have (on average 2.0117395944503733) internal successors, (1885), 1334 states have internal predecessors, (1885), 32 states have call successors, (32), 14 states have call predecessors, (32), 12 states have return successors, (29), 24 states have call predecessors, (29), 28 states have call successors, (29) [2023-11-29 04:58:20,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1370 states to 1370 states and 1946 transitions. [2023-11-29 04:58:20,488 INFO L78 Accepts]: Start accepts. Automaton has 1370 states and 1946 transitions. Word has length 62 [2023-11-29 04:58:20,488 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 04:58:20,488 INFO L495 AbstractCegarLoop]: Abstraction has 1370 states and 1946 transitions. [2023-11-29 04:58:20,488 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.833333333333334) internal successors, (59), 4 states have internal predecessors, (59), 3 states have call successors, (3), 3 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 04:58:20,489 INFO L276 IsEmpty]: Start isEmpty. Operand 1370 states and 1946 transitions. [2023-11-29 04:58:20,489 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2023-11-29 04:58:20,489 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 04:58:20,489 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:58:20,496 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b425b1b8-e56b-4a99-86a6-15bfbfde3f34/bin/uautomizer-verify-BQ2R08f2Ya/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 (18)] Ended with exit code 0 [2023-11-29 04:58:20,689 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b425b1b8-e56b-4a99-86a6-15bfbfde3f34/bin/uautomizer-verify-BQ2R08f2Ya/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 [2023-11-29 04:58:20,690 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr70REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, alt_mallocErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alt_mallocErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 525 more)] === [2023-11-29 04:58:20,690 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:58:20,690 INFO L85 PathProgramCache]: Analyzing trace with hash -1559192545, now seen corresponding path program 1 times [2023-11-29 04:58:20,691 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 04:58:20,691 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1247623782] [2023-11-29 04:58:20,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:58:20,691 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 [2023-11-29 04:58:20,691 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b425b1b8-e56b-4a99-86a6-15bfbfde3f34/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 04:58:20,692 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b425b1b8-e56b-4a99-86a6-15bfbfde3f34/bin/uautomizer-verify-BQ2R08f2Ya/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) [2023-11-29 04:58:20,693 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b425b1b8-e56b-4a99-86a6-15bfbfde3f34/bin/uautomizer-verify-BQ2R08f2Ya/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 (19)] Waiting until timeout for monitored process [2023-11-29 04:58:21,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:58:21,104 INFO L262 TraceCheckSpWp]: Trace formula consists of 331 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-29 04:58:21,107 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:58:21,111 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 [2023-11-29 04:58:21,214 WARN L876 $PredicateComparison]: unable to prove that (exists ((|alt_malloc_#res.base| (_ BitVec 32))) (= |c_#valid| (store |c_old(#valid)| |alt_malloc_#res.base| (_ bv1 1)))) is different from true [2023-11-29 04:58:21,229 INFO L349 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2023-11-29 04:58:21,229 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 20 [2023-11-29 04:58:21,239 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 04:58:21,239 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 04:58:21,239 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 04:58:21,239 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1247623782] [2023-11-29 04:58:21,239 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1247623782] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:58:21,239 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 04:58:21,239 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 04:58:21,239 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [577040304] [2023-11-29 04:58:21,240 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:58:21,240 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 04:58:21,240 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 04:58:21,241 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 04:58:21,241 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=8, Unknown=1, NotChecked=4, Total=20 [2023-11-29 04:58:21,241 INFO L87 Difference]: Start difference. First operand 1370 states and 1946 transitions. Second operand has 5 states, 3 states have (on average 20.0) internal successors, (60), 5 states have internal predecessors, (60), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-29 04:58:23,599 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 04:58:23,599 INFO L93 Difference]: Finished difference Result 1753 states and 2454 transitions. [2023-11-29 04:58:23,600 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-29 04:58:23,600 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 3 states have (on average 20.0) internal successors, (60), 5 states have internal predecessors, (60), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 64 [2023-11-29 04:58:23,600 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 04:58:23,606 INFO L225 Difference]: With dead ends: 1753 [2023-11-29 04:58:23,606 INFO L226 Difference]: Without dead ends: 1753 [2023-11-29 04:58:23,606 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 59 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=8, Unknown=1, NotChecked=4, Total=20 [2023-11-29 04:58:23,606 INFO L413 NwaCegarLoop]: 405 mSDtfsCounter, 723 mSDsluCounter, 572 mSDsCounter, 0 mSdLazyCounter, 1113 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 726 SdHoareTripleChecker+Valid, 977 SdHoareTripleChecker+Invalid, 2341 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 1113 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1207 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2023-11-29 04:58:23,606 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [726 Valid, 977 Invalid, 2341 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 1113 Invalid, 0 Unknown, 1207 Unchecked, 2.3s Time] [2023-11-29 04:58:23,608 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1753 states. [2023-11-29 04:58:23,625 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1753 to 1369. [2023-11-29 04:58:23,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1369 states, 937 states have (on average 2.0096051227321237) internal successors, (1883), 1333 states have internal predecessors, (1883), 32 states have call successors, (32), 14 states have call predecessors, (32), 12 states have return successors, (29), 24 states have call predecessors, (29), 28 states have call successors, (29) [2023-11-29 04:58:23,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1369 states to 1369 states and 1944 transitions. [2023-11-29 04:58:23,629 INFO L78 Accepts]: Start accepts. Automaton has 1369 states and 1944 transitions. Word has length 64 [2023-11-29 04:58:23,629 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 04:58:23,629 INFO L495 AbstractCegarLoop]: Abstraction has 1369 states and 1944 transitions. [2023-11-29 04:58:23,629 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 3 states have (on average 20.0) internal successors, (60), 5 states have internal predecessors, (60), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-29 04:58:23,629 INFO L276 IsEmpty]: Start isEmpty. Operand 1369 states and 1944 transitions. [2023-11-29 04:58:23,630 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2023-11-29 04:58:23,630 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 04:58:23,630 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:58:23,636 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b425b1b8-e56b-4a99-86a6-15bfbfde3f34/bin/uautomizer-verify-BQ2R08f2Ya/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 (19)] Forceful destruction successful, exit code 0 [2023-11-29 04:58:23,830 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b425b1b8-e56b-4a99-86a6-15bfbfde3f34/bin/uautomizer-verify-BQ2R08f2Ya/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 [2023-11-29 04:58:23,830 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr71REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, alt_mallocErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alt_mallocErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 525 more)] === [2023-11-29 04:58:23,831 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:58:23,831 INFO L85 PathProgramCache]: Analyzing trace with hash -1559192544, now seen corresponding path program 1 times [2023-11-29 04:58:23,831 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 04:58:23,831 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1707716868] [2023-11-29 04:58:23,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:58:23,832 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 [2023-11-29 04:58:23,832 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b425b1b8-e56b-4a99-86a6-15bfbfde3f34/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 04:58:23,833 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b425b1b8-e56b-4a99-86a6-15bfbfde3f34/bin/uautomizer-verify-BQ2R08f2Ya/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) [2023-11-29 04:58:23,834 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b425b1b8-e56b-4a99-86a6-15bfbfde3f34/bin/uautomizer-verify-BQ2R08f2Ya/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 (20)] Waiting until timeout for monitored process [2023-11-29 04:58:24,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:58:24,179 INFO L262 TraceCheckSpWp]: Trace formula consists of 331 conjuncts, 14 conjunts are in the unsatisfiable core [2023-11-29 04:58:24,181 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:58:24,188 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 [2023-11-29 04:58:24,192 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 [2023-11-29 04:58:24,578 WARN L876 $PredicateComparison]: unable to prove that (exists ((|alt_malloc_#res.base| (_ BitVec 32))) (and (= (store |c_old(#length)| |alt_malloc_#res.base| (select |c_#length| |alt_malloc_#res.base|)) |c_#length|) (= (_ bv0 1) (select |c_old(#valid)| |alt_malloc_#res.base|)))) is different from true [2023-11-29 04:58:24,592 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 04:58:24,593 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 [2023-11-29 04:58:24,606 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2023-11-29 04:58:24,606 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 [2023-11-29 04:58:24,617 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 04:58:24,617 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 04:58:24,617 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 04:58:24,617 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1707716868] [2023-11-29 04:58:24,617 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1707716868] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:58:24,617 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 04:58:24,617 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-29 04:58:24,618 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [864623548] [2023-11-29 04:58:24,618 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:58:24,618 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-29 04:58:24,618 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 04:58:24,619 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-29 04:58:24,619 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=13, Unknown=1, NotChecked=6, Total=30 [2023-11-29 04:58:24,619 INFO L87 Difference]: Start difference. First operand 1369 states and 1944 transitions. Second operand has 6 states, 4 states have (on average 15.0) internal successors, (60), 5 states have internal predecessors, (60), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-29 04:58:29,383 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 04:58:29,383 INFO L93 Difference]: Finished difference Result 2312 states and 3241 transitions. [2023-11-29 04:58:29,383 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-29 04:58:29,384 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 4 states have (on average 15.0) internal successors, (60), 5 states have internal predecessors, (60), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 64 [2023-11-29 04:58:29,384 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 04:58:29,389 INFO L225 Difference]: With dead ends: 2312 [2023-11-29 04:58:29,389 INFO L226 Difference]: Without dead ends: 2312 [2023-11-29 04:58:29,389 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 59 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=13, Unknown=1, NotChecked=6, Total=30 [2023-11-29 04:58:29,390 INFO L413 NwaCegarLoop]: 788 mSDtfsCounter, 1304 mSDsluCounter, 711 mSDsCounter, 0 mSdLazyCounter, 2060 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1307 SdHoareTripleChecker+Valid, 1499 SdHoareTripleChecker+Invalid, 3705 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 2060 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1617 IncrementalHoareTripleChecker+Unchecked, 4.7s IncrementalHoareTripleChecker+Time [2023-11-29 04:58:29,390 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1307 Valid, 1499 Invalid, 3705 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 2060 Invalid, 0 Unknown, 1617 Unchecked, 4.7s Time] [2023-11-29 04:58:29,392 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2312 states. [2023-11-29 04:58:29,407 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2312 to 1365. [2023-11-29 04:58:29,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1365 states, 941 states have (on average 1.9883103081827842) internal successors, (1871), 1329 states have internal predecessors, (1871), 32 states have call successors, (32), 14 states have call predecessors, (32), 12 states have return successors, (29), 24 states have call predecessors, (29), 28 states have call successors, (29) [2023-11-29 04:58:29,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1365 states to 1365 states and 1932 transitions. [2023-11-29 04:58:29,411 INFO L78 Accepts]: Start accepts. Automaton has 1365 states and 1932 transitions. Word has length 64 [2023-11-29 04:58:29,411 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 04:58:29,411 INFO L495 AbstractCegarLoop]: Abstraction has 1365 states and 1932 transitions. [2023-11-29 04:58:29,412 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 4 states have (on average 15.0) internal successors, (60), 5 states have internal predecessors, (60), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-29 04:58:29,412 INFO L276 IsEmpty]: Start isEmpty. Operand 1365 states and 1932 transitions. [2023-11-29 04:58:29,412 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2023-11-29 04:58:29,412 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 04:58:29,412 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:58:29,417 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b425b1b8-e56b-4a99-86a6-15bfbfde3f34/bin/uautomizer-verify-BQ2R08f2Ya/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 (20)] Ended with exit code 0 [2023-11-29 04:58:29,612 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b425b1b8-e56b-4a99-86a6-15bfbfde3f34/bin/uautomizer-verify-BQ2R08f2Ya/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 [2023-11-29 04:58:29,613 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting alt_bzeroErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, alt_mallocErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alt_mallocErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 525 more)] === [2023-11-29 04:58:29,613 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:58:29,613 INFO L85 PathProgramCache]: Analyzing trace with hash 1110857919, now seen corresponding path program 1 times [2023-11-29 04:58:29,613 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 04:58:29,614 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2113721043] [2023-11-29 04:58:29,614 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:58:29,614 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 [2023-11-29 04:58:29,614 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b425b1b8-e56b-4a99-86a6-15bfbfde3f34/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 04:58:29,615 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b425b1b8-e56b-4a99-86a6-15bfbfde3f34/bin/uautomizer-verify-BQ2R08f2Ya/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) [2023-11-29 04:58:29,615 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b425b1b8-e56b-4a99-86a6-15bfbfde3f34/bin/uautomizer-verify-BQ2R08f2Ya/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 (21)] Waiting until timeout for monitored process [2023-11-29 04:58:29,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:58:29,916 INFO L262 TraceCheckSpWp]: Trace formula consists of 376 conjuncts, 11 conjunts are in the unsatisfiable core [2023-11-29 04:58:29,918 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:58:29,923 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 [2023-11-29 04:58:29,941 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2023-11-29 04:58:29,962 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 23 treesize of output 11 [2023-11-29 04:58:29,999 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 04:58:30,000 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 04:58:30,000 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 04:58:30,000 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2113721043] [2023-11-29 04:58:30,000 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2113721043] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:58:30,000 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 04:58:30,000 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-29 04:58:30,000 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1363793800] [2023-11-29 04:58:30,000 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:58:30,001 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-29 04:58:30,001 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 04:58:30,001 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-29 04:58:30,001 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2023-11-29 04:58:30,001 INFO L87 Difference]: Start difference. First operand 1365 states and 1932 transitions. Second operand has 8 states, 5 states have (on average 13.0) internal successors, (65), 6 states have internal predecessors, (65), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-29 04:58:34,006 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 04:58:34,006 INFO L93 Difference]: Finished difference Result 1376 states and 1944 transitions. [2023-11-29 04:58:34,006 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-29 04:58:34,006 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 5 states have (on average 13.0) internal successors, (65), 6 states have internal predecessors, (65), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 70 [2023-11-29 04:58:34,007 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 04:58:34,011 INFO L225 Difference]: With dead ends: 1376 [2023-11-29 04:58:34,011 INFO L226 Difference]: Without dead ends: 1376 [2023-11-29 04:58:34,011 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 63 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2023-11-29 04:58:34,012 INFO L413 NwaCegarLoop]: 741 mSDtfsCounter, 14 mSDsluCounter, 2515 mSDsCounter, 0 mSdLazyCounter, 2625 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 3256 SdHoareTripleChecker+Invalid, 2627 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 2625 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.9s IncrementalHoareTripleChecker+Time [2023-11-29 04:58:34,012 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 3256 Invalid, 2627 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 2625 Invalid, 0 Unknown, 0 Unchecked, 3.9s Time] [2023-11-29 04:58:34,014 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1376 states. [2023-11-29 04:58:34,031 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1376 to 1375. [2023-11-29 04:58:34,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1375 states, 949 states have (on average 1.9841938883034773) internal successors, (1883), 1337 states have internal predecessors, (1883), 32 states have call successors, (32), 16 states have call predecessors, (32), 14 states have return successors, (29), 24 states have call predecessors, (29), 28 states have call successors, (29) [2023-11-29 04:58:34,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1375 states to 1375 states and 1944 transitions. [2023-11-29 04:58:34,036 INFO L78 Accepts]: Start accepts. Automaton has 1375 states and 1944 transitions. Word has length 70 [2023-11-29 04:58:34,036 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 04:58:34,036 INFO L495 AbstractCegarLoop]: Abstraction has 1375 states and 1944 transitions. [2023-11-29 04:58:34,036 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 5 states have (on average 13.0) internal successors, (65), 6 states have internal predecessors, (65), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-29 04:58:34,037 INFO L276 IsEmpty]: Start isEmpty. Operand 1375 states and 1944 transitions. [2023-11-29 04:58:34,037 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2023-11-29 04:58:34,037 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 04:58:34,037 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:58:34,042 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b425b1b8-e56b-4a99-86a6-15bfbfde3f34/bin/uautomizer-verify-BQ2R08f2Ya/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 (21)] Ended with exit code 0 [2023-11-29 04:58:34,237 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b425b1b8-e56b-4a99-86a6-15bfbfde3f34/bin/uautomizer-verify-BQ2R08f2Ya/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 [2023-11-29 04:58:34,238 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting alt_bzeroErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, alt_mallocErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alt_mallocErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 525 more)] === [2023-11-29 04:58:34,238 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:58:34,238 INFO L85 PathProgramCache]: Analyzing trace with hash 76857197, now seen corresponding path program 1 times [2023-11-29 04:58:34,239 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 04:58:34,239 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [533177187] [2023-11-29 04:58:34,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:58:34,239 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 [2023-11-29 04:58:34,239 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b425b1b8-e56b-4a99-86a6-15bfbfde3f34/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 04:58:34,240 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b425b1b8-e56b-4a99-86a6-15bfbfde3f34/bin/uautomizer-verify-BQ2R08f2Ya/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) [2023-11-29 04:58:34,241 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b425b1b8-e56b-4a99-86a6-15bfbfde3f34/bin/uautomizer-verify-BQ2R08f2Ya/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 (22)] Waiting until timeout for monitored process [2023-11-29 04:58:34,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:58:34,546 INFO L262 TraceCheckSpWp]: Trace formula consists of 377 conjuncts, 25 conjunts are in the unsatisfiable core [2023-11-29 04:58:34,549 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:58:34,565 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 [2023-11-29 04:58:34,602 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2023-11-29 04:58:34,610 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2023-11-29 04:58:34,652 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 9 [2023-11-29 04:58:34,727 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 04:58:34,727 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 04:58:34,727 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 04:58:34,727 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [533177187] [2023-11-29 04:58:34,727 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [533177187] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:58:34,728 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 04:58:34,728 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-29 04:58:34,728 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1313343980] [2023-11-29 04:58:34,728 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:58:34,728 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-29 04:58:34,728 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 04:58:34,729 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-29 04:58:34,729 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2023-11-29 04:58:34,729 INFO L87 Difference]: Start difference. First operand 1375 states and 1944 transitions. Second operand has 9 states, 6 states have (on average 11.0) internal successors, (66), 7 states have internal predecessors, (66), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-29 04:58:40,052 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 04:58:40,052 INFO L93 Difference]: Finished difference Result 1375 states and 1942 transitions. [2023-11-29 04:58:40,053 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-29 04:58:40,053 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 6 states have (on average 11.0) internal successors, (66), 7 states have internal predecessors, (66), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 71 [2023-11-29 04:58:40,054 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 04:58:40,056 INFO L225 Difference]: With dead ends: 1375 [2023-11-29 04:58:40,056 INFO L226 Difference]: Without dead ends: 1375 [2023-11-29 04:58:40,057 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 63 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2023-11-29 04:58:40,057 INFO L413 NwaCegarLoop]: 739 mSDtfsCounter, 12 mSDsluCounter, 3089 mSDsCounter, 0 mSdLazyCounter, 2891 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 3828 SdHoareTripleChecker+Invalid, 2892 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 2891 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.2s IncrementalHoareTripleChecker+Time [2023-11-29 04:58:40,057 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 3828 Invalid, 2892 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 2891 Invalid, 0 Unknown, 0 Unchecked, 5.2s Time] [2023-11-29 04:58:40,060 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1375 states. [2023-11-29 04:58:40,076 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1375 to 1375. [2023-11-29 04:58:40,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1375 states, 949 states have (on average 1.982086406743941) internal successors, (1881), 1337 states have internal predecessors, (1881), 32 states have call successors, (32), 16 states have call predecessors, (32), 14 states have return successors, (29), 24 states have call predecessors, (29), 28 states have call successors, (29) [2023-11-29 04:58:40,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1375 states to 1375 states and 1942 transitions. [2023-11-29 04:58:40,088 INFO L78 Accepts]: Start accepts. Automaton has 1375 states and 1942 transitions. Word has length 71 [2023-11-29 04:58:40,088 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 04:58:40,088 INFO L495 AbstractCegarLoop]: Abstraction has 1375 states and 1942 transitions. [2023-11-29 04:58:40,088 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 6 states have (on average 11.0) internal successors, (66), 7 states have internal predecessors, (66), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-29 04:58:40,089 INFO L276 IsEmpty]: Start isEmpty. Operand 1375 states and 1942 transitions. [2023-11-29 04:58:40,089 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2023-11-29 04:58:40,089 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 04:58:40,089 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:58:40,095 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b425b1b8-e56b-4a99-86a6-15bfbfde3f34/bin/uautomizer-verify-BQ2R08f2Ya/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 (22)] Ended with exit code 0 [2023-11-29 04:58:40,290 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b425b1b8-e56b-4a99-86a6-15bfbfde3f34/bin/uautomizer-verify-BQ2R08f2Ya/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 [2023-11-29 04:58:40,290 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr78REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, alt_mallocErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alt_mallocErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 525 more)] === [2023-11-29 04:58:40,290 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:58:40,290 INFO L85 PathProgramCache]: Analyzing trace with hash -998618493, now seen corresponding path program 1 times [2023-11-29 04:58:40,291 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 04:58:40,291 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [593008031] [2023-11-29 04:58:40,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:58:40,291 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 [2023-11-29 04:58:40,291 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b425b1b8-e56b-4a99-86a6-15bfbfde3f34/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 04:58:40,292 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b425b1b8-e56b-4a99-86a6-15bfbfde3f34/bin/uautomizer-verify-BQ2R08f2Ya/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) [2023-11-29 04:58:40,292 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b425b1b8-e56b-4a99-86a6-15bfbfde3f34/bin/uautomizer-verify-BQ2R08f2Ya/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 (23)] Waiting until timeout for monitored process [2023-11-29 04:58:40,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:58:40,587 INFO L262 TraceCheckSpWp]: Trace formula consists of 393 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-29 04:58:40,588 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:58:40,614 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 04:58:40,614 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 04:58:40,614 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 04:58:40,614 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [593008031] [2023-11-29 04:58:40,614 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [593008031] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 04:58:40,614 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 04:58:40,614 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-29 04:58:40,615 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [498746056] [2023-11-29 04:58:40,615 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 04:58:40,615 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 04:58:40,615 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 04:58:40,616 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 04:58:40,616 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-29 04:58:40,616 INFO L87 Difference]: Start difference. First operand 1375 states and 1942 transitions. Second operand has 5 states, 4 states have (on average 17.5) internal successors, (70), 5 states have internal predecessors, (70), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2023-11-29 04:58:41,473 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 04:58:41,473 INFO L93 Difference]: Finished difference Result 1383 states and 1952 transitions. [2023-11-29 04:58:41,475 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-29 04:58:41,475 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 17.5) internal successors, (70), 5 states have internal predecessors, (70), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 76 [2023-11-29 04:58:41,475 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 04:58:41,477 INFO L225 Difference]: With dead ends: 1383 [2023-11-29 04:58:41,478 INFO L226 Difference]: Without dead ends: 1381 [2023-11-29 04:58:41,478 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 72 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-29 04:58:41,478 INFO L413 NwaCegarLoop]: 745 mSDtfsCounter, 4 mSDsluCounter, 1482 mSDsCounter, 0 mSdLazyCounter, 298 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 2227 SdHoareTripleChecker+Invalid, 299 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 298 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-11-29 04:58:41,479 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 2227 Invalid, 299 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 298 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-11-29 04:58:41,480 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1381 states. [2023-11-29 04:58:41,491 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1381 to 1381. [2023-11-29 04:58:41,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1381 states, 953 states have (on average 1.9800629590766001) internal successors, (1887), 1343 states have internal predecessors, (1887), 32 states have call successors, (32), 16 states have call predecessors, (32), 16 states have return successors, (31), 24 states have call predecessors, (31), 28 states have call successors, (31) [2023-11-29 04:58:41,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1381 states to 1381 states and 1950 transitions. [2023-11-29 04:58:41,496 INFO L78 Accepts]: Start accepts. Automaton has 1381 states and 1950 transitions. Word has length 76 [2023-11-29 04:58:41,496 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 04:58:41,496 INFO L495 AbstractCegarLoop]: Abstraction has 1381 states and 1950 transitions. [2023-11-29 04:58:41,497 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 17.5) internal successors, (70), 5 states have internal predecessors, (70), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2023-11-29 04:58:41,497 INFO L276 IsEmpty]: Start isEmpty. Operand 1381 states and 1950 transitions. [2023-11-29 04:58:41,497 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2023-11-29 04:58:41,497 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 04:58:41,497 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:58:41,504 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b425b1b8-e56b-4a99-86a6-15bfbfde3f34/bin/uautomizer-verify-BQ2R08f2Ya/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 (23)] Ended with exit code 0 [2023-11-29 04:58:41,698 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b425b1b8-e56b-4a99-86a6-15bfbfde3f34/bin/uautomizer-verify-BQ2R08f2Ya/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 [2023-11-29 04:58:41,698 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr78REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, alt_mallocErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alt_mallocErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 525 more)] === [2023-11-29 04:58:41,698 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:58:41,698 INFO L85 PathProgramCache]: Analyzing trace with hash 2135152941, now seen corresponding path program 1 times [2023-11-29 04:58:41,699 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 04:58:41,699 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1967202088] [2023-11-29 04:58:41,699 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 04:58:41,699 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 [2023-11-29 04:58:41,699 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b425b1b8-e56b-4a99-86a6-15bfbfde3f34/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 04:58:41,700 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b425b1b8-e56b-4a99-86a6-15bfbfde3f34/bin/uautomizer-verify-BQ2R08f2Ya/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) [2023-11-29 04:58:41,701 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b425b1b8-e56b-4a99-86a6-15bfbfde3f34/bin/uautomizer-verify-BQ2R08f2Ya/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 (24)] Waiting until timeout for monitored process [2023-11-29 04:58:42,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 04:58:42,021 INFO L262 TraceCheckSpWp]: Trace formula consists of 404 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-29 04:58:42,022 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:58:42,061 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 04:58:42,061 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 04:58:42,169 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 04:58:42,169 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 04:58:42,169 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1967202088] [2023-11-29 04:58:42,169 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1967202088] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 04:58:42,170 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 04:58:42,170 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2023-11-29 04:58:42,170 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [652631208] [2023-11-29 04:58:42,170 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 04:58:42,170 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-29 04:58:42,170 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 04:58:42,171 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-29 04:58:42,171 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2023-11-29 04:58:42,171 INFO L87 Difference]: Start difference. First operand 1381 states and 1950 transitions. Second operand has 10 states, 8 states have (on average 9.5) internal successors, (76), 10 states have internal predecessors, (76), 1 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2023-11-29 04:58:43,758 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 04:58:43,758 INFO L93 Difference]: Finished difference Result 1395 states and 1968 transitions. [2023-11-29 04:58:43,760 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-29 04:58:43,760 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 8 states have (on average 9.5) internal successors, (76), 10 states have internal predecessors, (76), 1 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) Word has length 77 [2023-11-29 04:58:43,760 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 04:58:43,762 INFO L225 Difference]: With dead ends: 1395 [2023-11-29 04:58:43,762 INFO L226 Difference]: Without dead ends: 1391 [2023-11-29 04:58:43,762 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 157 GetRequests, 144 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=80, Invalid=130, Unknown=0, NotChecked=0, Total=210 [2023-11-29 04:58:43,763 INFO L413 NwaCegarLoop]: 745 mSDtfsCounter, 27 mSDsluCounter, 2222 mSDsCounter, 0 mSdLazyCounter, 436 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 2967 SdHoareTripleChecker+Invalid, 445 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 436 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2023-11-29 04:58:43,763 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [27 Valid, 2967 Invalid, 445 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 436 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2023-11-29 04:58:43,764 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1391 states. [2023-11-29 04:58:43,774 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1391 to 1389. [2023-11-29 04:58:43,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1389 states, 961 states have (on average 1.9739854318418315) internal successors, (1897), 1351 states have internal predecessors, (1897), 32 states have call successors, (32), 16 states have call predecessors, (32), 16 states have return successors, (31), 24 states have call predecessors, (31), 28 states have call successors, (31) [2023-11-29 04:58:43,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1389 states to 1389 states and 1960 transitions. [2023-11-29 04:58:43,777 INFO L78 Accepts]: Start accepts. Automaton has 1389 states and 1960 transitions. Word has length 77 [2023-11-29 04:58:43,777 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 04:58:43,777 INFO L495 AbstractCegarLoop]: Abstraction has 1389 states and 1960 transitions. [2023-11-29 04:58:43,777 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 8 states have (on average 9.5) internal successors, (76), 10 states have internal predecessors, (76), 1 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2023-11-29 04:58:43,778 INFO L276 IsEmpty]: Start isEmpty. Operand 1389 states and 1960 transitions. [2023-11-29 04:58:43,778 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2023-11-29 04:58:43,778 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 04:58:43,778 INFO L195 NwaCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:58:43,785 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b425b1b8-e56b-4a99-86a6-15bfbfde3f34/bin/uautomizer-verify-BQ2R08f2Ya/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 (24)] Ended with exit code 0 [2023-11-29 04:58:43,978 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b425b1b8-e56b-4a99-86a6-15bfbfde3f34/bin/uautomizer-verify-BQ2R08f2Ya/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 [2023-11-29 04:58:43,979 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr78REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, alt_mallocErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alt_mallocErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 525 more)] === [2023-11-29 04:58:43,979 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:58:43,979 INFO L85 PathProgramCache]: Analyzing trace with hash -239229693, now seen corresponding path program 2 times [2023-11-29 04:58:43,980 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 04:58:43,980 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [758829698] [2023-11-29 04:58:43,980 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-29 04:58:43,980 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 [2023-11-29 04:58:43,980 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b425b1b8-e56b-4a99-86a6-15bfbfde3f34/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 04:58:43,981 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b425b1b8-e56b-4a99-86a6-15bfbfde3f34/bin/uautomizer-verify-BQ2R08f2Ya/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) [2023-11-29 04:58:43,982 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b425b1b8-e56b-4a99-86a6-15bfbfde3f34/bin/uautomizer-verify-BQ2R08f2Ya/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 (25)] Waiting until timeout for monitored process [2023-11-29 04:58:44,572 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-29 04:58:44,572 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 04:58:44,588 INFO L262 TraceCheckSpWp]: Trace formula consists of 437 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-29 04:58:44,590 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:58:44,684 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 04:58:44,684 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 04:58:44,957 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 04:58:44,957 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 04:58:44,957 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [758829698] [2023-11-29 04:58:44,957 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [758829698] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 04:58:44,957 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 04:58:44,957 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 16 [2023-11-29 04:58:44,958 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1333940427] [2023-11-29 04:58:44,958 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 04:58:44,958 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-11-29 04:58:44,958 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 04:58:44,959 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-11-29 04:58:44,959 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=162, Unknown=0, NotChecked=0, Total=240 [2023-11-29 04:58:44,959 INFO L87 Difference]: Start difference. First operand 1389 states and 1960 transitions. Second operand has 16 states, 14 states have (on average 5.857142857142857) internal successors, (82), 16 states have internal predecessors, (82), 1 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2023-11-29 04:58:47,778 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 04:58:47,778 INFO L93 Difference]: Finished difference Result 1413 states and 1998 transitions. [2023-11-29 04:58:47,780 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-11-29 04:58:47,780 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 14 states have (on average 5.857142857142857) internal successors, (82), 16 states have internal predecessors, (82), 1 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) Word has length 80 [2023-11-29 04:58:47,780 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 04:58:47,782 INFO L225 Difference]: With dead ends: 1413 [2023-11-29 04:58:47,782 INFO L226 Difference]: Without dead ends: 1409 [2023-11-29 04:58:47,783 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 169 GetRequests, 144 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 69 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=248, Invalid=454, Unknown=0, NotChecked=0, Total=702 [2023-11-29 04:58:47,783 INFO L413 NwaCegarLoop]: 745 mSDtfsCounter, 32 mSDsluCounter, 5184 mSDsCounter, 0 mSdLazyCounter, 888 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 5929 SdHoareTripleChecker+Invalid, 904 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 888 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2023-11-29 04:58:47,784 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [32 Valid, 5929 Invalid, 904 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 888 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2023-11-29 04:58:47,785 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1409 states. [2023-11-29 04:58:47,797 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1409 to 1407. [2023-11-29 04:58:47,799 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1407 states, 979 states have (on average 1.9622063329928499) internal successors, (1921), 1369 states have internal predecessors, (1921), 32 states have call successors, (32), 16 states have call predecessors, (32), 16 states have return successors, (31), 24 states have call predecessors, (31), 28 states have call successors, (31) [2023-11-29 04:58:47,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1407 states to 1407 states and 1984 transitions. [2023-11-29 04:58:47,802 INFO L78 Accepts]: Start accepts. Automaton has 1407 states and 1984 transitions. Word has length 80 [2023-11-29 04:58:47,802 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 04:58:47,802 INFO L495 AbstractCegarLoop]: Abstraction has 1407 states and 1984 transitions. [2023-11-29 04:58:47,802 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 14 states have (on average 5.857142857142857) internal successors, (82), 16 states have internal predecessors, (82), 1 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2023-11-29 04:58:47,802 INFO L276 IsEmpty]: Start isEmpty. Operand 1407 states and 1984 transitions. [2023-11-29 04:58:47,803 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2023-11-29 04:58:47,803 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 04:58:47,803 INFO L195 NwaCegarLoop]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:58:47,810 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b425b1b8-e56b-4a99-86a6-15bfbfde3f34/bin/uautomizer-verify-BQ2R08f2Ya/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 (25)] Ended with exit code 0 [2023-11-29 04:58:48,003 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b425b1b8-e56b-4a99-86a6-15bfbfde3f34/bin/uautomizer-verify-BQ2R08f2Ya/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 [2023-11-29 04:58:48,004 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr78REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, alt_mallocErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alt_mallocErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 525 more)] === [2023-11-29 04:58:48,004 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:58:48,004 INFO L85 PathProgramCache]: Analyzing trace with hash 1517835459, now seen corresponding path program 3 times [2023-11-29 04:58:48,004 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 04:58:48,005 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1048555984] [2023-11-29 04:58:48,005 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-29 04:58:48,005 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 [2023-11-29 04:58:48,005 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b425b1b8-e56b-4a99-86a6-15bfbfde3f34/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 04:58:48,006 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b425b1b8-e56b-4a99-86a6-15bfbfde3f34/bin/uautomizer-verify-BQ2R08f2Ya/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) [2023-11-29 04:58:48,006 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b425b1b8-e56b-4a99-86a6-15bfbfde3f34/bin/uautomizer-verify-BQ2R08f2Ya/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 (26)] Waiting until timeout for monitored process [2023-11-29 04:58:48,798 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2023-11-29 04:58:48,798 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 04:58:48,816 INFO L262 TraceCheckSpWp]: Trace formula consists of 503 conjuncts, 16 conjunts are in the unsatisfiable core [2023-11-29 04:58:48,818 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:58:49,021 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 04:58:49,021 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 04:58:49,881 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 04:58:49,881 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 04:58:49,881 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1048555984] [2023-11-29 04:58:49,881 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1048555984] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 04:58:49,881 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 04:58:49,881 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 28 [2023-11-29 04:58:49,881 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [605440415] [2023-11-29 04:58:49,881 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 04:58:49,882 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2023-11-29 04:58:49,882 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 04:58:49,883 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2023-11-29 04:58:49,883 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=222, Invalid=534, Unknown=0, NotChecked=0, Total=756 [2023-11-29 04:58:49,883 INFO L87 Difference]: Start difference. First operand 1407 states and 1984 transitions. Second operand has 28 states, 26 states have (on average 3.6153846153846154) internal successors, (94), 28 states have internal predecessors, (94), 1 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2023-11-29 04:58:57,400 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 04:58:57,400 INFO L93 Difference]: Finished difference Result 1449 states and 2056 transitions. [2023-11-29 04:58:57,401 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2023-11-29 04:58:57,401 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 26 states have (on average 3.6153846153846154) internal successors, (94), 28 states have internal predecessors, (94), 1 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) Word has length 86 [2023-11-29 04:58:57,401 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 04:58:57,404 INFO L225 Difference]: With dead ends: 1449 [2023-11-29 04:58:57,404 INFO L226 Difference]: Without dead ends: 1443 [2023-11-29 04:58:57,405 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 193 GetRequests, 144 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 285 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=854, Invalid=1696, Unknown=0, NotChecked=0, Total=2550 [2023-11-29 04:58:57,406 INFO L413 NwaCegarLoop]: 745 mSDtfsCounter, 69 mSDsluCounter, 8891 mSDsCounter, 0 mSdLazyCounter, 1777 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 69 SdHoareTripleChecker+Valid, 9636 SdHoareTripleChecker+Invalid, 1794 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 1777 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.7s IncrementalHoareTripleChecker+Time [2023-11-29 04:58:57,406 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [69 Valid, 9636 Invalid, 1794 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 1777 Invalid, 0 Unknown, 0 Unchecked, 5.7s Time] [2023-11-29 04:58:57,408 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1443 states. [2023-11-29 04:58:57,417 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1443 to 1443. [2023-11-29 04:58:57,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1443 states, 1015 states have (on average 1.9379310344827587) internal successors, (1967), 1405 states have internal predecessors, (1967), 32 states have call successors, (32), 16 states have call predecessors, (32), 16 states have return successors, (31), 24 states have call predecessors, (31), 28 states have call successors, (31) [2023-11-29 04:58:57,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1443 states to 1443 states and 2030 transitions. [2023-11-29 04:58:57,420 INFO L78 Accepts]: Start accepts. Automaton has 1443 states and 2030 transitions. Word has length 86 [2023-11-29 04:58:57,420 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 04:58:57,420 INFO L495 AbstractCegarLoop]: Abstraction has 1443 states and 2030 transitions. [2023-11-29 04:58:57,420 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 26 states have (on average 3.6153846153846154) internal successors, (94), 28 states have internal predecessors, (94), 1 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2023-11-29 04:58:57,420 INFO L276 IsEmpty]: Start isEmpty. Operand 1443 states and 2030 transitions. [2023-11-29 04:58:57,421 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2023-11-29 04:58:57,421 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 04:58:57,421 INFO L195 NwaCegarLoop]: trace histogram [22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:58:57,428 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b425b1b8-e56b-4a99-86a6-15bfbfde3f34/bin/uautomizer-verify-BQ2R08f2Ya/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 (26)] Ended with exit code 0 [2023-11-29 04:58:57,621 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b425b1b8-e56b-4a99-86a6-15bfbfde3f34/bin/uautomizer-verify-BQ2R08f2Ya/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 [2023-11-29 04:58:57,622 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr78REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, alt_mallocErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alt_mallocErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 525 more)] === [2023-11-29 04:58:57,622 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:58:57,622 INFO L85 PathProgramCache]: Analyzing trace with hash 1951482947, now seen corresponding path program 4 times [2023-11-29 04:58:57,623 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 04:58:57,623 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1199748227] [2023-11-29 04:58:57,623 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-11-29 04:58:57,623 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 [2023-11-29 04:58:57,623 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b425b1b8-e56b-4a99-86a6-15bfbfde3f34/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 04:58:57,624 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b425b1b8-e56b-4a99-86a6-15bfbfde3f34/bin/uautomizer-verify-BQ2R08f2Ya/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) [2023-11-29 04:58:57,625 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b425b1b8-e56b-4a99-86a6-15bfbfde3f34/bin/uautomizer-verify-BQ2R08f2Ya/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 (27)] Waiting until timeout for monitored process [2023-11-29 04:58:58,011 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-11-29 04:58:58,012 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 04:58:58,029 INFO L262 TraceCheckSpWp]: Trace formula consists of 635 conjuncts, 27 conjunts are in the unsatisfiable core [2023-11-29 04:58:58,033 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:58:58,617 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 04:58:58,617 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 04:59:00,802 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 04:59:00,802 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 04:59:00,802 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1199748227] [2023-11-29 04:59:00,802 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1199748227] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 04:59:00,802 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 04:59:00,803 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 27] total 52 [2023-11-29 04:59:00,803 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1459932160] [2023-11-29 04:59:00,803 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 04:59:00,803 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 52 states [2023-11-29 04:59:00,803 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 04:59:00,804 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2023-11-29 04:59:00,805 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=725, Invalid=1927, Unknown=0, NotChecked=0, Total=2652 [2023-11-29 04:59:00,806 INFO L87 Difference]: Start difference. First operand 1443 states and 2030 transitions. Second operand has 52 states, 50 states have (on average 2.36) internal successors, (118), 52 states have internal predecessors, (118), 1 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2023-11-29 04:59:17,311 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 04:59:17,311 INFO L93 Difference]: Finished difference Result 1517 states and 2168 transitions. [2023-11-29 04:59:17,313 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 73 states. [2023-11-29 04:59:17,313 INFO L78 Accepts]: Start accepts. Automaton has has 52 states, 50 states have (on average 2.36) internal successors, (118), 52 states have internal predecessors, (118), 1 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) Word has length 98 [2023-11-29 04:59:17,313 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 04:59:17,316 INFO L225 Difference]: With dead ends: 1517 [2023-11-29 04:59:17,316 INFO L226 Difference]: Without dead ends: 1513 [2023-11-29 04:59:17,319 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 239 GetRequests, 144 SyntacticMatches, 0 SemanticMatches, 95 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1126 ImplicationChecksByTransitivity, 9.5s TimeCoverageRelationStatistics Valid=2955, Invalid=6357, Unknown=0, NotChecked=0, Total=9312 [2023-11-29 04:59:17,319 INFO L413 NwaCegarLoop]: 745 mSDtfsCounter, 127 mSDsluCounter, 17783 mSDsCounter, 0 mSdLazyCounter, 3924 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 127 SdHoareTripleChecker+Valid, 18528 SdHoareTripleChecker+Invalid, 3974 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 3924 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.1s IncrementalHoareTripleChecker+Time [2023-11-29 04:59:17,320 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [127 Valid, 18528 Invalid, 3974 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [50 Valid, 3924 Invalid, 0 Unknown, 0 Unchecked, 9.1s Time] [2023-11-29 04:59:17,321 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1513 states. [2023-11-29 04:59:17,334 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1513 to 1511. [2023-11-29 04:59:17,335 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1511 states, 1083 states have (on average 1.9012003693444137) internal successors, (2059), 1473 states have internal predecessors, (2059), 32 states have call successors, (32), 16 states have call predecessors, (32), 16 states have return successors, (31), 24 states have call predecessors, (31), 28 states have call successors, (31) [2023-11-29 04:59:17,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1511 states to 1511 states and 2122 transitions. [2023-11-29 04:59:17,337 INFO L78 Accepts]: Start accepts. Automaton has 1511 states and 2122 transitions. Word has length 98 [2023-11-29 04:59:17,337 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 04:59:17,337 INFO L495 AbstractCegarLoop]: Abstraction has 1511 states and 2122 transitions. [2023-11-29 04:59:17,337 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 52 states, 50 states have (on average 2.36) internal successors, (118), 52 states have internal predecessors, (118), 1 states have call successors, (3), 1 states have call predecessors, (3), 3 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2023-11-29 04:59:17,338 INFO L276 IsEmpty]: Start isEmpty. Operand 1511 states and 2122 transitions. [2023-11-29 04:59:17,338 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2023-11-29 04:59:17,338 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 04:59:17,339 INFO L195 NwaCegarLoop]: trace histogram [44, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 04:59:17,345 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b425b1b8-e56b-4a99-86a6-15bfbfde3f34/bin/uautomizer-verify-BQ2R08f2Ya/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 (27)] Ended with exit code 0 [2023-11-29 04:59:17,539 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b425b1b8-e56b-4a99-86a6-15bfbfde3f34/bin/uautomizer-verify-BQ2R08f2Ya/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 [2023-11-29 04:59:17,539 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr78REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, alt_mallocErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alt_mallocErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 525 more)] === [2023-11-29 04:59:17,539 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 04:59:17,540 INFO L85 PathProgramCache]: Analyzing trace with hash -487952893, now seen corresponding path program 5 times [2023-11-29 04:59:17,540 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 04:59:17,540 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1519680087] [2023-11-29 04:59:17,540 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-11-29 04:59:17,540 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 [2023-11-29 04:59:17,540 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b425b1b8-e56b-4a99-86a6-15bfbfde3f34/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 04:59:17,541 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b425b1b8-e56b-4a99-86a6-15bfbfde3f34/bin/uautomizer-verify-BQ2R08f2Ya/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) [2023-11-29 04:59:17,548 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b425b1b8-e56b-4a99-86a6-15bfbfde3f34/bin/uautomizer-verify-BQ2R08f2Ya/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 (28)] Waiting until timeout for monitored process [2023-11-29 04:59:19,000 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 23 check-sat command(s) [2023-11-29 04:59:19,001 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 04:59:19,029 INFO L262 TraceCheckSpWp]: Trace formula consists of 877 conjuncts, 65 conjunts are in the unsatisfiable core [2023-11-29 04:59:19,037 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 04:59:19,042 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 [2023-11-29 04:59:19,177 INFO L349 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2023-11-29 04:59:19,177 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 19 treesize of output 27 [2023-11-29 04:59:19,217 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2023-11-29 04:59:19,313 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 24 treesize of output 12 [2023-11-29 04:59:20,544 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2023-11-29 04:59:20,545 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 44 treesize of output 43 [2023-11-29 04:59:20,597 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 15 [2023-11-29 04:59:20,642 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 87 refuted. 0 times theorem prover too weak. 903 trivial. 0 not checked. [2023-11-29 04:59:20,642 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 04:59:21,117 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_2694 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (select |c_#valid| (select (select (store |c_#memory_$Pointer$#4.base| |c_ULTIMATE.start_main_#t~mem73#1.base| v_ArrVal_2694) |c_ULTIMATE.start_main_~user~0#1.base|) (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (_ bv1 1)))) is different from false [2023-11-29 04:59:21,119 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 04:59:21,119 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1519680087] [2023-11-29 04:59:21,119 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1519680087] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 04:59:21,120 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [138289959] [2023-11-29 04:59:21,120 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-11-29 04:59:21,120 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-11-29 04:59:21,120 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b425b1b8-e56b-4a99-86a6-15bfbfde3f34/bin/uautomizer-verify-BQ2R08f2Ya/cvc4 [2023-11-29 04:59:21,121 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b425b1b8-e56b-4a99-86a6-15bfbfde3f34/bin/uautomizer-verify-BQ2R08f2Ya/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-11-29 04:59:21,121 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b425b1b8-e56b-4a99-86a6-15bfbfde3f34/bin/uautomizer-verify-BQ2R08f2Ya/cvc4 --incremental --print-success --lang smt (29)] Waiting until timeout for monitored process [2023-11-29 05:00:22,388 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 23 check-sat command(s) [2023-11-29 05:00:22,388 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 05:00:22,639 INFO L262 TraceCheckSpWp]: Trace formula consists of 877 conjuncts, 69 conjunts are in the unsatisfiable core [2023-11-29 05:00:22,647 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 05:00:22,653 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 [2023-11-29 05:00:22,904 INFO L349 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2023-11-29 05:00:22,905 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 19 treesize of output 27 [2023-11-29 05:00:22,962 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 [2023-11-29 05:00:23,117 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 20 treesize of output 12 [2023-11-29 05:00:24,183 INFO L349 Elim1Store]: treesize reduction 19, result has 20.8 percent of original size [2023-11-29 05:00:24,183 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 [2023-11-29 05:00:24,256 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 [2023-11-29 05:00:24,266 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 87 refuted. 0 times theorem prover too weak. 903 trivial. 0 not checked. [2023-11-29 05:00:24,266 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 05:00:24,714 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_3173 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (select |c_#valid| (select (select (store |c_#memory_$Pointer$#4.base| |c_ULTIMATE.start_main_#t~mem73#1.base| v_ArrVal_3173) |c_ULTIMATE.start_main_~user~0#1.base|) (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (_ bv1 1)))) is different from false [2023-11-29 05:00:24,716 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [138289959] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 05:00:24,716 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 05:00:24,716 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 16 [2023-11-29 05:00:24,716 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1343471294] [2023-11-29 05:00:24,717 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 05:00:24,717 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-11-29 05:00:24,717 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 05:00:24,718 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-11-29 05:00:24,718 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=283, Unknown=2, NotChecked=70, Total=420 [2023-11-29 05:00:24,718 INFO L87 Difference]: Start difference. First operand 1511 states and 2122 transitions. Second operand has 17 states, 13 states have (on average 9.846153846153847) internal successors, (128), 14 states have internal predecessors, (128), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2023-11-29 05:00:29,380 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 05:00:33,399 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 05:00:37,425 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 05:00:41,433 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] [2023-11-29 05:00:50,628 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:00:50,628 INFO L93 Difference]: Finished difference Result 1892 states and 2626 transitions. [2023-11-29 05:00:50,628 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-29 05:00:50,628 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 13 states have (on average 9.846153846153847) internal successors, (128), 14 states have internal predecessors, (128), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) Word has length 120 [2023-11-29 05:00:50,629 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:00:50,632 INFO L225 Difference]: With dead ends: 1892 [2023-11-29 05:00:50,632 INFO L226 Difference]: Without dead ends: 1892 [2023-11-29 05:00:50,632 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 251 GetRequests, 224 SyntacticMatches, 3 SemanticMatches, 24 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 124 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=100, Invalid=458, Unknown=2, NotChecked=90, Total=650 [2023-11-29 05:00:50,633 INFO L413 NwaCegarLoop]: 392 mSDtfsCounter, 737 mSDsluCounter, 3613 mSDsCounter, 0 mSdLazyCounter, 5033 mSolverCounterSat, 24 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 24.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 739 SdHoareTripleChecker+Valid, 4005 SdHoareTripleChecker+Invalid, 5061 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 5033 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 25.6s IncrementalHoareTripleChecker+Time [2023-11-29 05:00:50,633 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [739 Valid, 4005 Invalid, 5061 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 5033 Invalid, 4 Unknown, 0 Unchecked, 25.6s Time] [2023-11-29 05:00:50,635 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1892 states. [2023-11-29 05:00:50,646 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1892 to 1508. [2023-11-29 05:00:50,647 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1508 states, 1083 states have (on average 1.8956602031394276) internal successors, (2053), 1470 states have internal predecessors, (2053), 32 states have call successors, (32), 16 states have call predecessors, (32), 16 states have return successors, (31), 24 states have call predecessors, (31), 28 states have call successors, (31) [2023-11-29 05:00:50,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1508 states to 1508 states and 2116 transitions. [2023-11-29 05:00:50,649 INFO L78 Accepts]: Start accepts. Automaton has 1508 states and 2116 transitions. Word has length 120 [2023-11-29 05:00:50,649 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:00:50,649 INFO L495 AbstractCegarLoop]: Abstraction has 1508 states and 2116 transitions. [2023-11-29 05:00:50,649 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 13 states have (on average 9.846153846153847) internal successors, (128), 14 states have internal predecessors, (128), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2023-11-29 05:00:50,649 INFO L276 IsEmpty]: Start isEmpty. Operand 1508 states and 2116 transitions. [2023-11-29 05:00:50,650 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2023-11-29 05:00:50,650 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:00:50,650 INFO L195 NwaCegarLoop]: trace histogram [44, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 05:00:50,662 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b425b1b8-e56b-4a99-86a6-15bfbfde3f34/bin/uautomizer-verify-BQ2R08f2Ya/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 (28)] Ended with exit code 0 [2023-11-29 05:00:50,879 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b425b1b8-e56b-4a99-86a6-15bfbfde3f34/bin/uautomizer-verify-BQ2R08f2Ya/cvc4 --incremental --print-success --lang smt (29)] Ended with exit code 0 [2023-11-29 05:00:51,050 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b425b1b8-e56b-4a99-86a6-15bfbfde3f34/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,29 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b425b1b8-e56b-4a99-86a6-15bfbfde3f34/bin/uautomizer-verify-BQ2R08f2Ya/cvc4 --incremental --print-success --lang smt [2023-11-29 05:00:51,051 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr79REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, alt_mallocErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alt_mallocErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 525 more)] === [2023-11-29 05:00:51,051 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:00:51,051 INFO L85 PathProgramCache]: Analyzing trace with hash -487952892, now seen corresponding path program 1 times [2023-11-29 05:00:51,054 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 05:00:51,054 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [209017533] [2023-11-29 05:00:51,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:00:51,054 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 [2023-11-29 05:00:51,054 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b425b1b8-e56b-4a99-86a6-15bfbfde3f34/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 05:00:51,055 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b425b1b8-e56b-4a99-86a6-15bfbfde3f34/bin/uautomizer-verify-BQ2R08f2Ya/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) [2023-11-29 05:00:51,056 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b425b1b8-e56b-4a99-86a6-15bfbfde3f34/bin/uautomizer-verify-BQ2R08f2Ya/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 (30)] Waiting until timeout for monitored process [2023-11-29 05:00:51,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:00:51,801 INFO L262 TraceCheckSpWp]: Trace formula consists of 877 conjuncts, 120 conjunts are in the unsatisfiable core [2023-11-29 05:00:51,812 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 05:00:51,818 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 [2023-11-29 05:00:52,045 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 [2023-11-29 05:00:52,079 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2023-11-29 05:00:52,079 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 [2023-11-29 05:00:52,108 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 [2023-11-29 05:00:52,116 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 [2023-11-29 05:00:52,211 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 18 treesize of output 10 [2023-11-29 05:00:52,215 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 [2023-11-29 05:00:53,072 INFO L349 Elim1Store]: treesize reduction 19, result has 20.8 percent of original size [2023-11-29 05:00:53,073 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 50 treesize of output 45 [2023-11-29 05:00:53,083 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 [2023-11-29 05:00:53,130 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 [2023-11-29 05:00:53,137 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 [2023-11-29 05:00:53,166 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 87 refuted. 0 times theorem prover too weak. 903 trivial. 0 not checked. [2023-11-29 05:00:53,166 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 05:00:54,677 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse0 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (and (forall ((v_ArrVal_3743 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_3744 (Array (_ BitVec 32) (_ BitVec 32)))) (bvule (bvadd (_ bv20 32) (select (select (store |c_#memory_$Pointer$#4.offset| |c_ULTIMATE.start_main_#t~mem73#1.base| v_ArrVal_3744) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0)) (select |c_#length| (select (select (store |c_#memory_$Pointer$#4.base| |c_ULTIMATE.start_main_#t~mem73#1.base| v_ArrVal_3743) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0)))) (forall ((v_ArrVal_3744 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse1 (select (select (store |c_#memory_$Pointer$#4.offset| |c_ULTIMATE.start_main_#t~mem73#1.base| v_ArrVal_3744) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0))) (bvule (bvadd (_ bv16 32) .cse1) (bvadd (_ bv20 32) .cse1)))))) is different from false [2023-11-29 05:00:54,687 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 05:00:54,687 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [209017533] [2023-11-29 05:00:54,688 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [209017533] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 05:00:54,688 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1075203798] [2023-11-29 05:00:54,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:00:54,688 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-11-29 05:00:54,688 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b425b1b8-e56b-4a99-86a6-15bfbfde3f34/bin/uautomizer-verify-BQ2R08f2Ya/cvc4 [2023-11-29 05:00:54,689 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b425b1b8-e56b-4a99-86a6-15bfbfde3f34/bin/uautomizer-verify-BQ2R08f2Ya/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-11-29 05:00:54,690 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b425b1b8-e56b-4a99-86a6-15bfbfde3f34/bin/uautomizer-verify-BQ2R08f2Ya/cvc4 --incremental --print-success --lang smt (31)] Waiting until timeout for monitored process [2023-11-29 05:02:32,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:02:32,663 INFO L262 TraceCheckSpWp]: Trace formula consists of 877 conjuncts, 121 conjunts are in the unsatisfiable core [2023-11-29 05:02:32,674 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 05:02:32,682 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 [2023-11-29 05:02:32,904 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 [2023-11-29 05:02:32,922 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2023-11-29 05:02:32,922 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 [2023-11-29 05:02:32,943 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 [2023-11-29 05:02:32,947 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-11-29 05:02:33,013 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 18 treesize of output 10 [2023-11-29 05:02:33,018 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 [2023-11-29 05:02:33,728 INFO L349 Elim1Store]: treesize reduction 19, result has 20.8 percent of original size [2023-11-29 05:02:33,728 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 50 treesize of output 45 [2023-11-29 05:02:33,738 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 [2023-11-29 05:02:33,791 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 [2023-11-29 05:02:33,798 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 [2023-11-29 05:02:33,800 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 87 refuted. 0 times theorem prover too weak. 903 trivial. 0 not checked. [2023-11-29 05:02:33,801 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 05:02:35,141 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (and (forall ((v_ArrVal_4315 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (select (store |c_#memory_$Pointer$#4.offset| |c_ULTIMATE.start_main_#t~mem73#1.base| v_ArrVal_4315) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (bvule (bvadd (_ bv16 32) .cse0) (bvadd .cse0 (_ bv20 32))))) (forall ((v_ArrVal_4315 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_4314 (Array (_ BitVec 32) (_ BitVec 32)))) (bvule (bvadd (select (select (store |c_#memory_$Pointer$#4.offset| |c_ULTIMATE.start_main_#t~mem73#1.base| v_ArrVal_4315) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) (_ bv20 32)) (select |c_#length| (select (select (store |c_#memory_$Pointer$#4.base| |c_ULTIMATE.start_main_#t~mem73#1.base| v_ArrVal_4314) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))))) is different from false [2023-11-29 05:02:35,146 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1075203798] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 05:02:35,146 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 05:02:35,146 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 13 [2023-11-29 05:02:35,147 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [268423636] [2023-11-29 05:02:35,147 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 05:02:35,147 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-11-29 05:02:35,147 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 05:02:35,147 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-11-29 05:02:35,148 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=203, Unknown=2, NotChecked=58, Total=306 [2023-11-29 05:02:35,148 INFO L87 Difference]: Start difference. First operand 1508 states and 2116 transitions. Second operand has 14 states, 11 states have (on average 6.636363636363637) internal successors, (73), 11 states have internal predecessors, (73), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-11-29 05:02:50,530 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:02:50,531 INFO L93 Difference]: Finished difference Result 2026 states and 2831 transitions. [2023-11-29 05:02:50,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-29 05:02:50,531 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 11 states have (on average 6.636363636363637) internal successors, (73), 11 states have internal predecessors, (73), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 120 [2023-11-29 05:02:50,532 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:02:50,534 INFO L225 Difference]: With dead ends: 2026 [2023-11-29 05:02:50,534 INFO L226 Difference]: Without dead ends: 2026 [2023-11-29 05:02:50,535 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 253 GetRequests, 227 SyntacticMatches, 3 SemanticMatches, 23 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 73 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=89, Invalid=423, Unknown=2, NotChecked=86, Total=600 [2023-11-29 05:02:50,535 INFO L413 NwaCegarLoop]: 902 mSDtfsCounter, 507 mSDsluCounter, 4173 mSDsCounter, 0 mSdLazyCounter, 6942 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 507 SdHoareTripleChecker+Valid, 5075 SdHoareTripleChecker+Invalid, 6962 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 6942 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 15.0s IncrementalHoareTripleChecker+Time [2023-11-29 05:02:50,535 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [507 Valid, 5075 Invalid, 6962 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [20 Valid, 6942 Invalid, 0 Unknown, 0 Unchecked, 15.0s Time] [2023-11-29 05:02:50,537 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2026 states. [2023-11-29 05:02:50,548 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2026 to 1507. [2023-11-29 05:02:50,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1507 states, 1083 states have (on average 1.8938134810710987) internal successors, (2051), 1469 states have internal predecessors, (2051), 32 states have call successors, (32), 16 states have call predecessors, (32), 16 states have return successors, (31), 24 states have call predecessors, (31), 28 states have call successors, (31) [2023-11-29 05:02:50,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1507 states to 1507 states and 2114 transitions. [2023-11-29 05:02:50,552 INFO L78 Accepts]: Start accepts. Automaton has 1507 states and 2114 transitions. Word has length 120 [2023-11-29 05:02:50,552 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:02:50,552 INFO L495 AbstractCegarLoop]: Abstraction has 1507 states and 2114 transitions. [2023-11-29 05:02:50,552 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 11 states have (on average 6.636363636363637) internal successors, (73), 11 states have internal predecessors, (73), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-11-29 05:02:50,552 INFO L276 IsEmpty]: Start isEmpty. Operand 1507 states and 2114 transitions. [2023-11-29 05:02:50,553 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2023-11-29 05:02:50,553 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:02:50,553 INFO L195 NwaCegarLoop]: trace histogram [44, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 05:02:50,595 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b425b1b8-e56b-4a99-86a6-15bfbfde3f34/bin/uautomizer-verify-BQ2R08f2Ya/cvc4 --incremental --print-success --lang smt (31)] Ended with exit code 0 [2023-11-29 05:02:50,763 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b425b1b8-e56b-4a99-86a6-15bfbfde3f34/bin/uautomizer-verify-BQ2R08f2Ya/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 (30)] Ended with exit code 0 [2023-11-29 05:02:50,953 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b425b1b8-e56b-4a99-86a6-15bfbfde3f34/bin/uautomizer-verify-BQ2R08f2Ya/cvc4 --incremental --print-success --lang smt,30 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b425b1b8-e56b-4a99-86a6-15bfbfde3f34/bin/uautomizer-verify-BQ2R08f2Ya/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 [2023-11-29 05:02:50,954 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr82REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, alt_mallocErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alt_mallocErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 525 more)] === [2023-11-29 05:02:50,954 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:02:50,954 INFO L85 PathProgramCache]: Analyzing trace with hash -769932828, now seen corresponding path program 1 times [2023-11-29 05:02:50,955 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 05:02:50,955 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [427098608] [2023-11-29 05:02:50,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:02:50,955 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 [2023-11-29 05:02:50,955 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b425b1b8-e56b-4a99-86a6-15bfbfde3f34/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 05:02:50,956 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b425b1b8-e56b-4a99-86a6-15bfbfde3f34/bin/uautomizer-verify-BQ2R08f2Ya/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) [2023-11-29 05:02:50,957 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b425b1b8-e56b-4a99-86a6-15bfbfde3f34/bin/uautomizer-verify-BQ2R08f2Ya/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 (32)] Waiting until timeout for monitored process [2023-11-29 05:02:51,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:02:51,851 INFO L262 TraceCheckSpWp]: Trace formula consists of 896 conjuncts, 66 conjunts are in the unsatisfiable core [2023-11-29 05:02:51,858 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 05:02:51,861 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 [2023-11-29 05:02:51,998 INFO L349 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2023-11-29 05:02:51,998 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 19 treesize of output 27 [2023-11-29 05:02:52,032 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2023-11-29 05:02:52,129 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 24 treesize of output 12 [2023-11-29 05:02:53,260 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2023-11-29 05:02:53,260 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 44 treesize of output 43 [2023-11-29 05:02:53,379 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2023-11-29 05:02:53,379 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 44 treesize of output 43 [2023-11-29 05:02:53,392 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 15 [2023-11-29 05:02:53,447 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 87 refuted. 0 times theorem prover too weak. 903 trivial. 0 not checked. [2023-11-29 05:02:53,447 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 05:02:53,514 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_4755 (Array (_ BitVec 32) (_ BitVec 32)))) (= (bvadd (_ bv1 1) (select |c_#valid| (select (select (store |c_#memory_$Pointer$#4.base| |c_ULTIMATE.start_main_#t~mem74#1.base| v_ArrVal_4755) |c_ULTIMATE.start_main_~user~0#1.base|) (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|)))) (_ bv0 1))) is different from false [2023-11-29 05:02:53,525 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_4755 (Array (_ BitVec 32) (_ BitVec 32)))) (= (bvadd (select |c_#valid| (let ((.cse0 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (store |c_#memory_$Pointer$#4.base| (select (select |c_#memory_$Pointer$#4.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse0) v_ArrVal_4755) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0))) (_ bv1 1)) (_ bv0 1))) is different from false [2023-11-29 05:02:53,983 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_4755 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_4801 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (select |c_#valid| (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (let ((.cse0 (store |c_#memory_$Pointer$#4.base| |c_ULTIMATE.start_main_#t~mem73#1.base| v_ArrVal_4801))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_4755)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (_ bv1 1)))) is different from false [2023-11-29 05:02:53,986 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 05:02:53,986 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [427098608] [2023-11-29 05:02:53,986 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [427098608] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 05:02:53,986 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1236437286] [2023-11-29 05:02:53,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:02:53,987 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-11-29 05:02:53,987 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b425b1b8-e56b-4a99-86a6-15bfbfde3f34/bin/uautomizer-verify-BQ2R08f2Ya/cvc4 [2023-11-29 05:02:53,988 INFO L229 MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b425b1b8-e56b-4a99-86a6-15bfbfde3f34/bin/uautomizer-verify-BQ2R08f2Ya/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-11-29 05:02:53,989 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b425b1b8-e56b-4a99-86a6-15bfbfde3f34/bin/uautomizer-verify-BQ2R08f2Ya/cvc4 --incremental --print-success --lang smt (33)] Waiting until timeout for monitored process [2023-11-29 05:02:58,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:02:58,456 INFO L262 TraceCheckSpWp]: Trace formula consists of 896 conjuncts, 70 conjunts are in the unsatisfiable core [2023-11-29 05:02:58,465 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 05:02:58,471 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 [2023-11-29 05:02:58,764 INFO L349 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2023-11-29 05:02:58,764 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 19 treesize of output 27 [2023-11-29 05:02:58,825 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 [2023-11-29 05:02:58,981 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 20 treesize of output 12 [2023-11-29 05:02:59,981 INFO L349 Elim1Store]: treesize reduction 19, result has 20.8 percent of original size [2023-11-29 05:02:59,981 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 [2023-11-29 05:03:00,133 INFO L349 Elim1Store]: treesize reduction 19, result has 20.8 percent of original size [2023-11-29 05:03:00,133 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 [2023-11-29 05:03:00,144 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 [2023-11-29 05:03:00,152 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 87 refuted. 0 times theorem prover too weak. 903 trivial. 0 not checked. [2023-11-29 05:03:00,152 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 05:03:04,246 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_5241 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (select |c_#valid| (let ((.cse0 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (store |c_#memory_$Pointer$#4.base| (select (select |c_#memory_$Pointer$#4.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse0) v_ArrVal_5241) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0))) (_ bv1 1)))) is different from false [2023-11-29 05:03:04,691 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_5241 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_5287 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (_ bv1 1) (select |c_#valid| (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (let ((.cse0 (store |c_#memory_$Pointer$#4.base| |c_ULTIMATE.start_main_#t~mem73#1.base| v_ArrVal_5287))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_5241)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))))) is different from false [2023-11-29 05:03:04,694 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1236437286] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 05:03:04,694 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 05:03:04,694 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 18 [2023-11-29 05:03:04,694 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1447497117] [2023-11-29 05:03:04,694 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 05:03:04,695 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-11-29 05:03:04,695 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 05:03:04,696 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-11-29 05:03:04,696 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=384, Unknown=10, NotChecked=220, Total=702 [2023-11-29 05:03:04,696 INFO L87 Difference]: Start difference. First operand 1507 states and 2114 transitions. Second operand has 19 states, 15 states have (on average 8.8) internal successors, (132), 16 states have internal predecessors, (132), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2023-11-29 05:03:09,492 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 05:03:13,507 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 05:03:17,554 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 05:03:21,561 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] [2023-11-29 05:03:32,835 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:03:32,835 INFO L93 Difference]: Finished difference Result 1890 states and 2622 transitions. [2023-11-29 05:03:32,836 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-11-29 05:03:32,836 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 15 states have (on average 8.8) internal successors, (132), 16 states have internal predecessors, (132), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) Word has length 122 [2023-11-29 05:03:32,836 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:03:32,839 INFO L225 Difference]: With dead ends: 1890 [2023-11-29 05:03:32,839 INFO L226 Difference]: Without dead ends: 1890 [2023-11-29 05:03:32,839 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 259 GetRequests, 226 SyntacticMatches, 3 SemanticMatches, 30 ConstructedPredicates, 5 IntricatePredicates, 0 DeprecatedPredicates, 165 ImplicationChecksByTransitivity, 4.9s TimeCoverageRelationStatistics Valid=123, Invalid=589, Unknown=10, NotChecked=270, Total=992 [2023-11-29 05:03:32,840 INFO L413 NwaCegarLoop]: 391 mSDtfsCounter, 733 mSDsluCounter, 3629 mSDsCounter, 0 mSdLazyCounter, 5078 mSolverCounterSat, 22 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 26.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 735 SdHoareTripleChecker+Valid, 4020 SdHoareTripleChecker+Invalid, 5104 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 5078 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 27.8s IncrementalHoareTripleChecker+Time [2023-11-29 05:03:32,840 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [735 Valid, 4020 Invalid, 5104 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 5078 Invalid, 4 Unknown, 0 Unchecked, 27.8s Time] [2023-11-29 05:03:32,842 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1890 states. [2023-11-29 05:03:32,854 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1890 to 1506. [2023-11-29 05:03:32,855 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1506 states, 1083 states have (on average 1.89196675900277) internal successors, (2049), 1468 states have internal predecessors, (2049), 32 states have call successors, (32), 16 states have call predecessors, (32), 16 states have return successors, (31), 24 states have call predecessors, (31), 28 states have call successors, (31) [2023-11-29 05:03:32,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1506 states to 1506 states and 2112 transitions. [2023-11-29 05:03:32,857 INFO L78 Accepts]: Start accepts. Automaton has 1506 states and 2112 transitions. Word has length 122 [2023-11-29 05:03:32,857 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:03:32,857 INFO L495 AbstractCegarLoop]: Abstraction has 1506 states and 2112 transitions. [2023-11-29 05:03:32,858 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 15 states have (on average 8.8) internal successors, (132), 16 states have internal predecessors, (132), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2023-11-29 05:03:32,858 INFO L276 IsEmpty]: Start isEmpty. Operand 1506 states and 2112 transitions. [2023-11-29 05:03:32,858 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2023-11-29 05:03:32,858 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:03:32,858 INFO L195 NwaCegarLoop]: trace histogram [44, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 05:03:32,871 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b425b1b8-e56b-4a99-86a6-15bfbfde3f34/bin/uautomizer-verify-BQ2R08f2Ya/cvc4 --incremental --print-success --lang smt (33)] Ended with exit code 0 [2023-11-29 05:03:33,068 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b425b1b8-e56b-4a99-86a6-15bfbfde3f34/bin/uautomizer-verify-BQ2R08f2Ya/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 (32)] Ended with exit code 0 [2023-11-29 05:03:33,259 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b425b1b8-e56b-4a99-86a6-15bfbfde3f34/bin/uautomizer-verify-BQ2R08f2Ya/cvc4 --incremental --print-success --lang smt,32 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b425b1b8-e56b-4a99-86a6-15bfbfde3f34/bin/uautomizer-verify-BQ2R08f2Ya/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 [2023-11-29 05:03:33,259 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr83REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, alt_mallocErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alt_mallocErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 525 more)] === [2023-11-29 05:03:33,259 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:03:33,259 INFO L85 PathProgramCache]: Analyzing trace with hash -769932827, now seen corresponding path program 1 times [2023-11-29 05:03:33,260 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 05:03:33,260 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1828052883] [2023-11-29 05:03:33,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:03:33,260 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 [2023-11-29 05:03:33,260 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b425b1b8-e56b-4a99-86a6-15bfbfde3f34/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 05:03:33,261 INFO L229 MonitoredProcess]: Starting monitored process 34 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b425b1b8-e56b-4a99-86a6-15bfbfde3f34/bin/uautomizer-verify-BQ2R08f2Ya/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) [2023-11-29 05:03:33,262 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b425b1b8-e56b-4a99-86a6-15bfbfde3f34/bin/uautomizer-verify-BQ2R08f2Ya/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 (34)] Waiting until timeout for monitored process [2023-11-29 05:03:34,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:03:34,216 INFO L262 TraceCheckSpWp]: Trace formula consists of 896 conjuncts, 124 conjunts are in the unsatisfiable core [2023-11-29 05:03:34,229 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 05:03:34,236 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 [2023-11-29 05:03:34,563 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 [2023-11-29 05:03:34,594 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2023-11-29 05:03:34,594 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 [2023-11-29 05:03:34,644 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 [2023-11-29 05:03:34,648 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 [2023-11-29 05:03:34,771 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 18 treesize of output 10 [2023-11-29 05:03:34,776 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 [2023-11-29 05:03:35,808 INFO L349 Elim1Store]: treesize reduction 19, result has 20.8 percent of original size [2023-11-29 05:03:35,809 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 50 treesize of output 45 [2023-11-29 05:03:35,820 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 24 treesize of output 11 [2023-11-29 05:03:35,960 INFO L349 Elim1Store]: treesize reduction 19, result has 20.8 percent of original size [2023-11-29 05:03:35,961 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 50 treesize of output 45 [2023-11-29 05:03:35,968 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 [2023-11-29 05:03:35,982 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 [2023-11-29 05:03:35,989 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 [2023-11-29 05:03:36,042 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 87 refuted. 0 times theorem prover too weak. 903 trivial. 0 not checked. [2023-11-29 05:03:36,043 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 05:03:36,261 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse0 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (and (forall ((v_ArrVal_5773 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_5774 (Array (_ BitVec 32) (_ BitVec 32)))) (bvule (bvadd (_ bv8 32) (select (select (store |c_#memory_$Pointer$#4.offset| |c_ULTIMATE.start_main_#t~mem74#1.base| v_ArrVal_5774) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0)) (select |c_#length| (select (select (store |c_#memory_$Pointer$#4.base| |c_ULTIMATE.start_main_#t~mem74#1.base| v_ArrVal_5773) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0)))) (forall ((v_ArrVal_5774 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse1 (select (select (store |c_#memory_$Pointer$#4.offset| |c_ULTIMATE.start_main_#t~mem74#1.base| v_ArrVal_5774) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0))) (bvule (bvadd (_ bv4 32) .cse1) (bvadd (_ bv8 32) .cse1)))))) is different from false [2023-11-29 05:03:36,297 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse2 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (let ((.cse1 (select (select |c_#memory_$Pointer$#4.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (and (forall ((v_ArrVal_5774 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (select (store |c_#memory_$Pointer$#4.offset| .cse1 v_ArrVal_5774) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (bvule (bvadd (_ bv4 32) .cse0) (bvadd (_ bv8 32) .cse0)))) (forall ((v_ArrVal_5773 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_5774 (Array (_ BitVec 32) (_ BitVec 32)))) (bvule (bvadd (_ bv8 32) (select (select (store |c_#memory_$Pointer$#4.offset| .cse1 v_ArrVal_5774) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2)) (select |c_#length| (select (select (store |c_#memory_$Pointer$#4.base| .cse1 v_ArrVal_5773) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))))))) is different from false [2023-11-29 05:03:37,781 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (and (forall ((v_ArrVal_5865 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_5866 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_5773 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_5774 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse2 (store |c_#memory_$Pointer$#4.base| |c_ULTIMATE.start_main_#t~mem73#1.base| v_ArrVal_5865))) (let ((.cse0 (select (select .cse2 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (bvule (bvadd (select (select (store (store |c_#memory_$Pointer$#4.offset| |c_ULTIMATE.start_main_#t~mem73#1.base| v_ArrVal_5866) .cse0 v_ArrVal_5774) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) (_ bv8 32)) (select |c_#length| (select (select (store .cse2 .cse0 v_ArrVal_5773) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))))) (forall ((v_ArrVal_5865 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_5866 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_5774 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse3 (select (select (store (store |c_#memory_$Pointer$#4.offset| |c_ULTIMATE.start_main_#t~mem73#1.base| v_ArrVal_5866) (select (select (store |c_#memory_$Pointer$#4.base| |c_ULTIMATE.start_main_#t~mem73#1.base| v_ArrVal_5865) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_5774) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (bvule (bvadd .cse3 (_ bv4 32)) (bvadd .cse3 (_ bv8 32))))))) is different from false [2023-11-29 05:03:37,789 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 05:03:37,789 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1828052883] [2023-11-29 05:03:37,790 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1828052883] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 05:03:37,790 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1897386439] [2023-11-29 05:03:37,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:03:37,790 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-11-29 05:03:37,790 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b425b1b8-e56b-4a99-86a6-15bfbfde3f34/bin/uautomizer-verify-BQ2R08f2Ya/cvc4 [2023-11-29 05:03:37,791 INFO L229 MonitoredProcess]: Starting monitored process 35 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b425b1b8-e56b-4a99-86a6-15bfbfde3f34/bin/uautomizer-verify-BQ2R08f2Ya/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-11-29 05:03:37,792 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b425b1b8-e56b-4a99-86a6-15bfbfde3f34/bin/uautomizer-verify-BQ2R08f2Ya/cvc4 --incremental --print-success --lang smt (35)] Waiting until timeout for monitored process [2023-11-29 05:03:43,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:03:43,744 INFO L262 TraceCheckSpWp]: Trace formula consists of 896 conjuncts, 82 conjunts are in the unsatisfiable core [2023-11-29 05:03:43,754 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 05:03:43,763 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 [2023-11-29 05:03:43,770 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 [2023-11-29 05:03:44,368 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2023-11-29 05:03:44,368 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 [2023-11-29 05:03:44,377 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 [2023-11-29 05:03:44,451 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 [2023-11-29 05:03:44,458 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 [2023-11-29 05:03:44,586 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 16 treesize of output 8 [2023-11-29 05:03:44,673 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 [2023-11-29 05:03:45,588 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 [2023-11-29 05:03:45,851 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 2 new quantified variables, introduced 0 case distinctions, treesize of input 64 treesize of output 42 [2023-11-29 05:03:45,863 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 11 [2023-11-29 05:03:45,995 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 17 treesize of output 9 [2023-11-29 05:03:46,002 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 [2023-11-29 05:03:46,126 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 87 refuted. 0 times theorem prover too weak. 903 trivial. 0 not checked. [2023-11-29 05:03:46,126 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 05:03:46,592 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 231 treesize of output 159 [2023-11-29 05:03:49,742 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse4 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (and (forall ((v_arrayElimCell_77 (_ BitVec 32)) (v_ArrVal_6358 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse2 (store |c_#memory_$Pointer$#4.offset| |c_ULTIMATE.start_main_#t~mem73#1.base| v_ArrVal_6358))) (let ((.cse3 (select (select .cse2 |c_ULTIMATE.start_main_~user~0#1.base|) .cse4)) (.cse1 (select |c_#length| v_arrayElimCell_77))) (or (forall ((v_prenex_6 (_ BitVec 32)) (v_ArrVal_6309 (_ BitVec 32))) (let ((.cse0 (bvadd (select (select (store .cse2 v_arrayElimCell_77 (store (select .cse2 v_arrayElimCell_77) (bvadd (_ bv16 32) .cse3) v_prenex_6)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse4) (_ bv8 32)))) (or (bvule .cse0 .cse1) (bvule .cse0 (select |c_#length| v_ArrVal_6309))))) (not (bvule (bvadd .cse3 (_ bv20 32)) .cse1)))))) (forall ((v_ArrVal_6358 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse5 (store |c_#memory_$Pointer$#4.offset| |c_ULTIMATE.start_main_#t~mem73#1.base| v_ArrVal_6358))) (let ((.cse6 (select (select .cse5 |c_ULTIMATE.start_main_~user~0#1.base|) .cse4))) (or (forall ((v_arrayElimCell_77 (_ BitVec 32)) (v_prenex_6 (_ BitVec 32))) (let ((.cse7 (select |c_#length| v_arrayElimCell_77))) (or (bvule (bvadd (select (select (store .cse5 v_arrayElimCell_77 (store (select .cse5 v_arrayElimCell_77) (bvadd (_ bv16 32) .cse6) v_prenex_6)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse4) (_ bv8 32)) .cse7) (not (bvule (bvadd .cse6 (_ bv20 32)) .cse7))))) (= (bvadd (_ bv8 32) .cse6) |c_ULTIMATE.start_main_~user~0#1.offset|))))) (forall ((v_arrayElimCell_77 (_ BitVec 32)) (v_ArrVal_6358 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse8 (store |c_#memory_$Pointer$#4.offset| |c_ULTIMATE.start_main_#t~mem73#1.base| v_ArrVal_6358))) (let ((.cse9 (select (select .cse8 |c_ULTIMATE.start_main_~user~0#1.base|) .cse4)) (.cse10 (select |c_#length| v_arrayElimCell_77))) (or (= |c_ULTIMATE.start_main_~user~0#1.base| v_arrayElimCell_77) (forall ((v_prenex_6 (_ BitVec 32))) (bvule (bvadd (select (select (store .cse8 v_arrayElimCell_77 (store (select .cse8 v_arrayElimCell_77) (bvadd (_ bv16 32) .cse9) v_prenex_6)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse4) (_ bv8 32)) .cse10)) (not (bvule (bvadd .cse9 (_ bv20 32)) .cse10)))))) (forall ((v_ArrVal_6358 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse12 (select (store |c_#memory_$Pointer$#4.offset| |c_ULTIMATE.start_main_#t~mem73#1.base| v_ArrVal_6358) |c_ULTIMATE.start_main_~user~0#1.base|))) (let ((.cse11 (select .cse12 .cse4))) (or (not (bvule (bvadd .cse11 (_ bv20 32)) (select |c_#length| |c_ULTIMATE.start_main_~user~0#1.base|))) (forall ((v_prenex_6 (_ BitVec 32)) (v_ArrVal_6309 (_ BitVec 32))) (bvule (bvadd (select (store .cse12 (bvadd (_ bv16 32) .cse11) v_prenex_6) .cse4) (_ bv8 32)) (select |c_#length| v_ArrVal_6309))) (not (= (bvadd (_ bv8 32) .cse11) |c_ULTIMATE.start_main_~user~0#1.offset|)))))) (forall ((v_arrayElimCell_77 (_ BitVec 32)) (v_ArrVal_6358 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse14 (store |c_#memory_$Pointer$#4.offset| |c_ULTIMATE.start_main_#t~mem73#1.base| v_ArrVal_6358))) (let ((.cse15 (select (select .cse14 |c_ULTIMATE.start_main_~user~0#1.base|) .cse4))) (or (forall ((v_ArrVal_6310 (_ BitVec 32))) (let ((.cse13 (select (select (store .cse14 v_arrayElimCell_77 (store (select .cse14 v_arrayElimCell_77) (bvadd (_ bv16 32) .cse15) v_ArrVal_6310)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse4))) (bvule (bvadd (_ bv4 32) .cse13) (bvadd (_ bv8 32) .cse13)))) (not (bvule (bvadd .cse15 (_ bv20 32)) (select |c_#length| v_arrayElimCell_77))))))))) is different from false [2023-11-29 05:03:49,977 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1897386439] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 05:03:49,977 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 05:03:49,978 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 15] total 28 [2023-11-29 05:03:49,978 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1577018614] [2023-11-29 05:03:49,978 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 05:03:49,978 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2023-11-29 05:03:49,978 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 05:03:49,979 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2023-11-29 05:03:49,979 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=106, Invalid=962, Unknown=4, NotChecked=260, Total=1332 [2023-11-29 05:03:49,980 INFO L87 Difference]: Start difference. First operand 1506 states and 2112 transitions. Second operand has 29 states, 24 states have (on average 6.0) internal successors, (144), 24 states have internal predecessors, (144), 6 states have call successors, (6), 5 states have call predecessors, (6), 5 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2023-11-29 05:04:25,651 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:04:25,651 INFO L93 Difference]: Finished difference Result 2063 states and 2871 transitions. [2023-11-29 05:04:25,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-11-29 05:04:25,652 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 24 states have (on average 6.0) internal successors, (144), 24 states have internal predecessors, (144), 6 states have call successors, (6), 5 states have call predecessors, (6), 5 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) Word has length 122 [2023-11-29 05:04:25,652 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:04:25,654 INFO L225 Difference]: With dead ends: 2063 [2023-11-29 05:04:25,654 INFO L226 Difference]: Without dead ends: 2063 [2023-11-29 05:04:25,655 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 268 GetRequests, 219 SyntacticMatches, 1 SemanticMatches, 48 ConstructedPredicates, 4 IntricatePredicates, 0 DeprecatedPredicates, 395 ImplicationChecksByTransitivity, 5.7s TimeCoverageRelationStatistics Valid=226, Invalid=1856, Unknown=4, NotChecked=364, Total=2450 [2023-11-29 05:04:25,656 INFO L413 NwaCegarLoop]: 774 mSDtfsCounter, 1061 mSDsluCounter, 7648 mSDsCounter, 0 mSdLazyCounter, 13792 mSolverCounterSat, 60 mSolverCounterUnsat, 8 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 31.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1061 SdHoareTripleChecker+Valid, 8422 SdHoareTripleChecker+Invalid, 13860 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 60 IncrementalHoareTripleChecker+Valid, 13792 IncrementalHoareTripleChecker+Invalid, 8 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 34.0s IncrementalHoareTripleChecker+Time [2023-11-29 05:04:25,656 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1061 Valid, 8422 Invalid, 13860 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [60 Valid, 13792 Invalid, 8 Unknown, 0 Unchecked, 34.0s Time] [2023-11-29 05:04:25,657 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2063 states. [2023-11-29 05:04:25,672 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2063 to 1740. [2023-11-29 05:04:25,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1740 states, 1309 states have (on average 1.9060351413292589) internal successors, (2495), 1696 states have internal predecessors, (2495), 38 states have call successors, (38), 22 states have call predecessors, (38), 19 states have return successors, (37), 24 states have call predecessors, (37), 34 states have call successors, (37) [2023-11-29 05:04:25,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1740 states to 1740 states and 2570 transitions. [2023-11-29 05:04:25,676 INFO L78 Accepts]: Start accepts. Automaton has 1740 states and 2570 transitions. Word has length 122 [2023-11-29 05:04:25,676 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:04:25,676 INFO L495 AbstractCegarLoop]: Abstraction has 1740 states and 2570 transitions. [2023-11-29 05:04:25,677 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 24 states have (on average 6.0) internal successors, (144), 24 states have internal predecessors, (144), 6 states have call successors, (6), 5 states have call predecessors, (6), 5 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2023-11-29 05:04:25,677 INFO L276 IsEmpty]: Start isEmpty. Operand 1740 states and 2570 transitions. [2023-11-29 05:04:25,677 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2023-11-29 05:04:25,677 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:04:25,677 INFO L195 NwaCegarLoop]: trace histogram [44, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 05:04:25,688 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b425b1b8-e56b-4a99-86a6-15bfbfde3f34/bin/uautomizer-verify-BQ2R08f2Ya/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 (34)] Ended with exit code 0 [2023-11-29 05:04:25,893 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b425b1b8-e56b-4a99-86a6-15bfbfde3f34/bin/uautomizer-verify-BQ2R08f2Ya/cvc4 --incremental --print-success --lang smt (35)] Ended with exit code 0 [2023-11-29 05:04:26,078 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b425b1b8-e56b-4a99-86a6-15bfbfde3f34/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,35 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b425b1b8-e56b-4a99-86a6-15bfbfde3f34/bin/uautomizer-verify-BQ2R08f2Ya/cvc4 --incremental --print-success --lang smt [2023-11-29 05:04:26,078 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr86REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, alt_mallocErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alt_mallocErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 525 more)] === [2023-11-29 05:04:26,078 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:04:26,078 INFO L85 PathProgramCache]: Analyzing trace with hash -1169715296, now seen corresponding path program 1 times [2023-11-29 05:04:26,079 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 05:04:26,079 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1862508716] [2023-11-29 05:04:26,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:04:26,079 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 [2023-11-29 05:04:26,079 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b425b1b8-e56b-4a99-86a6-15bfbfde3f34/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 05:04:26,080 INFO L229 MonitoredProcess]: Starting monitored process 36 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b425b1b8-e56b-4a99-86a6-15bfbfde3f34/bin/uautomizer-verify-BQ2R08f2Ya/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) [2023-11-29 05:04:26,081 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b425b1b8-e56b-4a99-86a6-15bfbfde3f34/bin/uautomizer-verify-BQ2R08f2Ya/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 (36)] Waiting until timeout for monitored process [2023-11-29 05:04:27,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:04:27,263 INFO L262 TraceCheckSpWp]: Trace formula consists of 924 conjuncts, 68 conjunts are in the unsatisfiable core [2023-11-29 05:04:27,273 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 05:04:27,277 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 [2023-11-29 05:04:27,486 INFO L349 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2023-11-29 05:04:27,486 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 19 treesize of output 27 [2023-11-29 05:04:27,541 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2023-11-29 05:04:27,678 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 24 treesize of output 12 [2023-11-29 05:04:29,098 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2023-11-29 05:04:29,099 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 44 treesize of output 43 [2023-11-29 05:04:29,221 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2023-11-29 05:04:29,222 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 44 treesize of output 43 [2023-11-29 05:04:29,321 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2023-11-29 05:04:29,321 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 44 treesize of output 43 [2023-11-29 05:04:29,338 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 15 [2023-11-29 05:04:29,399 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 87 refuted. 0 times theorem prover too weak. 903 trivial. 0 not checked. [2023-11-29 05:04:29,399 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 05:04:33,583 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_6814 (Array (_ BitVec 32) (_ BitVec 32)))) (= (bvadd (select |c_#valid| (let ((.cse0 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (store |c_#memory_$Pointer$#4.base| (select (select |c_#memory_$Pointer$#4.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse0) v_ArrVal_6814) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0))) (_ bv1 1)) (_ bv0 1))) is different from false [2023-11-29 05:04:33,600 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_6813 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_6814 (Array (_ BitVec 32) (_ BitVec 32)))) (= (bvadd (select |c_#valid| (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (let ((.cse0 (store |c_#memory_$Pointer$#4.base| |c_ULTIMATE.start_main_#t~mem74#1.base| v_ArrVal_6813))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_6814)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (_ bv1 1)) (_ bv0 1))) is different from false [2023-11-29 05:04:33,616 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_6813 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_6814 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (select |c_#valid| (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (let ((.cse0 (store |c_#memory_$Pointer$#4.base| (select (select |c_#memory_$Pointer$#4.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_6813))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_6814)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (_ bv1 1)))) is different from false [2023-11-29 05:04:34,103 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_6813 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_6814 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_6860 (Array (_ BitVec 32) (_ BitVec 32)))) (= (bvadd (_ bv1 1) (select |c_#valid| (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (let ((.cse0 (let ((.cse2 (store |c_#memory_$Pointer$#4.base| |c_ULTIMATE.start_main_#t~mem73#1.base| v_ArrVal_6860))) (store .cse2 (select (select .cse2 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_6813)))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_6814)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))) (_ bv0 1))) is different from false [2023-11-29 05:04:34,107 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 05:04:34,107 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1862508716] [2023-11-29 05:04:34,107 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1862508716] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 05:04:34,108 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [221909794] [2023-11-29 05:04:34,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:04:34,108 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-11-29 05:04:34,108 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b425b1b8-e56b-4a99-86a6-15bfbfde3f34/bin/uautomizer-verify-BQ2R08f2Ya/cvc4 [2023-11-29 05:04:34,109 INFO L229 MonitoredProcess]: Starting monitored process 37 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b425b1b8-e56b-4a99-86a6-15bfbfde3f34/bin/uautomizer-verify-BQ2R08f2Ya/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-11-29 05:04:34,109 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b425b1b8-e56b-4a99-86a6-15bfbfde3f34/bin/uautomizer-verify-BQ2R08f2Ya/cvc4 --incremental --print-success --lang smt (37)] Waiting until timeout for monitored process [2023-11-29 05:04:38,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:04:38,957 INFO L262 TraceCheckSpWp]: Trace formula consists of 924 conjuncts, 72 conjunts are in the unsatisfiable core [2023-11-29 05:04:38,965 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 05:04:38,973 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 [2023-11-29 05:04:39,379 INFO L349 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2023-11-29 05:04:39,379 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 19 treesize of output 27 [2023-11-29 05:04:39,473 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 [2023-11-29 05:04:39,683 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 20 treesize of output 12 [2023-11-29 05:04:40,886 INFO L349 Elim1Store]: treesize reduction 19, result has 20.8 percent of original size [2023-11-29 05:04:40,886 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 [2023-11-29 05:04:41,079 INFO L349 Elim1Store]: treesize reduction 19, result has 20.8 percent of original size [2023-11-29 05:04:41,079 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 [2023-11-29 05:04:41,177 INFO L349 Elim1Store]: treesize reduction 19, result has 20.8 percent of original size [2023-11-29 05:04:41,177 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 [2023-11-29 05:04:41,191 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 [2023-11-29 05:04:41,199 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 87 refuted. 0 times theorem prover too weak. 903 trivial. 0 not checked. [2023-11-29 05:04:41,199 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 05:04:41,296 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_6814 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7315 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (select |c_#valid| (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (let ((.cse0 (store |c_#memory_$Pointer$#4.base| |c_ULTIMATE.start_main_#t~mem74#1.base| v_ArrVal_7315))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_6814)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (_ bv1 1)))) is different from false [2023-11-29 05:04:41,840 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_7362 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_6814 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7315 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (_ bv1 1) (select |c_#valid| (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (let ((.cse0 (let ((.cse2 (store |c_#memory_$Pointer$#4.base| |c_ULTIMATE.start_main_#t~mem73#1.base| v_ArrVal_7362))) (store .cse2 (select (select .cse2 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_7315)))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_6814)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))))) is different from false [2023-11-29 05:04:41,843 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [221909794] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 05:04:41,843 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 05:04:41,843 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 20 [2023-11-29 05:04:41,843 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1116618684] [2023-11-29 05:04:41,843 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 05:04:41,844 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2023-11-29 05:04:41,844 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 05:04:41,844 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2023-11-29 05:04:41,844 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=113, Invalid=501, Unknown=10, NotChecked=306, Total=930 [2023-11-29 05:04:41,844 INFO L87 Difference]: Start difference. First operand 1740 states and 2570 transitions. Second operand has 21 states, 17 states have (on average 8.0) internal successors, (136), 18 states have internal predecessors, (136), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2023-11-29 05:04:46,625 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 05:04:50,665 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 05:04:54,718 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 05:04:58,731 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] [2023-11-29 05:05:10,144 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:05:10,144 INFO L93 Difference]: Finished difference Result 2123 states and 3078 transitions. [2023-11-29 05:05:10,145 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-11-29 05:05:10,145 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 17 states have (on average 8.0) internal successors, (136), 18 states have internal predecessors, (136), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) Word has length 124 [2023-11-29 05:05:10,145 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:05:10,149 INFO L225 Difference]: With dead ends: 2123 [2023-11-29 05:05:10,149 INFO L226 Difference]: Without dead ends: 2123 [2023-11-29 05:05:10,150 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 267 GetRequests, 229 SyntacticMatches, 4 SemanticMatches, 34 ConstructedPredicates, 6 IntricatePredicates, 0 DeprecatedPredicates, 236 ImplicationChecksByTransitivity, 5.5s TimeCoverageRelationStatistics Valid=149, Invalid=735, Unknown=10, NotChecked=366, Total=1260 [2023-11-29 05:05:10,150 INFO L413 NwaCegarLoop]: 390 mSDtfsCounter, 727 mSDsluCounter, 3989 mSDsCounter, 0 mSdLazyCounter, 5522 mSolverCounterSat, 23 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 26.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 729 SdHoareTripleChecker+Valid, 4379 SdHoareTripleChecker+Invalid, 5549 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 5522 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 28.0s IncrementalHoareTripleChecker+Time [2023-11-29 05:05:10,150 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [729 Valid, 4379 Invalid, 5549 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 5522 Invalid, 4 Unknown, 0 Unchecked, 28.0s Time] [2023-11-29 05:05:10,152 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2123 states. [2023-11-29 05:05:10,169 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2123 to 1739. [2023-11-29 05:05:10,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1739 states, 1309 states have (on average 1.9045072574484339) internal successors, (2493), 1695 states have internal predecessors, (2493), 38 states have call successors, (38), 22 states have call predecessors, (38), 19 states have return successors, (37), 24 states have call predecessors, (37), 34 states have call successors, (37) [2023-11-29 05:05:10,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1739 states to 1739 states and 2568 transitions. [2023-11-29 05:05:10,174 INFO L78 Accepts]: Start accepts. Automaton has 1739 states and 2568 transitions. Word has length 124 [2023-11-29 05:05:10,174 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:05:10,174 INFO L495 AbstractCegarLoop]: Abstraction has 1739 states and 2568 transitions. [2023-11-29 05:05:10,174 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 17 states have (on average 8.0) internal successors, (136), 18 states have internal predecessors, (136), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2023-11-29 05:05:10,174 INFO L276 IsEmpty]: Start isEmpty. Operand 1739 states and 2568 transitions. [2023-11-29 05:05:10,175 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2023-11-29 05:05:10,175 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:05:10,175 INFO L195 NwaCegarLoop]: trace histogram [44, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 05:05:10,187 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b425b1b8-e56b-4a99-86a6-15bfbfde3f34/bin/uautomizer-verify-BQ2R08f2Ya/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 (36)] Forceful destruction successful, exit code 0 [2023-11-29 05:05:10,395 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b425b1b8-e56b-4a99-86a6-15bfbfde3f34/bin/uautomizer-verify-BQ2R08f2Ya/cvc4 --incremental --print-success --lang smt (37)] Ended with exit code 0 [2023-11-29 05:05:10,576 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b425b1b8-e56b-4a99-86a6-15bfbfde3f34/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,37 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b425b1b8-e56b-4a99-86a6-15bfbfde3f34/bin/uautomizer-verify-BQ2R08f2Ya/cvc4 --incremental --print-success --lang smt [2023-11-29 05:05:10,576 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr87REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, alt_mallocErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alt_mallocErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 525 more)] === [2023-11-29 05:05:10,576 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:05:10,576 INFO L85 PathProgramCache]: Analyzing trace with hash -1169715295, now seen corresponding path program 1 times [2023-11-29 05:05:10,577 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 05:05:10,577 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [93320443] [2023-11-29 05:05:10,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:05:10,577 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 [2023-11-29 05:05:10,577 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b425b1b8-e56b-4a99-86a6-15bfbfde3f34/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 05:05:10,578 INFO L229 MonitoredProcess]: Starting monitored process 38 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b425b1b8-e56b-4a99-86a6-15bfbfde3f34/bin/uautomizer-verify-BQ2R08f2Ya/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) [2023-11-29 05:05:10,579 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b425b1b8-e56b-4a99-86a6-15bfbfde3f34/bin/uautomizer-verify-BQ2R08f2Ya/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 (38)] Waiting until timeout for monitored process [2023-11-29 05:05:11,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:05:11,769 INFO L262 TraceCheckSpWp]: Trace formula consists of 924 conjuncts, 124 conjunts are in the unsatisfiable core [2023-11-29 05:05:11,780 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 05:05:11,784 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 [2023-11-29 05:05:11,971 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-11-29 05:05:12,016 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2023-11-29 05:05:12,016 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 [2023-11-29 05:05:12,063 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2023-11-29 05:05:12,070 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2023-11-29 05:05:12,218 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 22 treesize of output 10 [2023-11-29 05:05:12,224 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 9 treesize of output 3 [2023-11-29 05:05:13,374 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2023-11-29 05:05:13,374 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 62 treesize of output 57 [2023-11-29 05:05:13,389 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 30 treesize of output 13 [2023-11-29 05:05:13,560 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2023-11-29 05:05:13,560 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 62 treesize of output 57 [2023-11-29 05:05:13,574 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 13 [2023-11-29 05:05:13,688 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2023-11-29 05:05:13,688 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 62 treesize of output 57 [2023-11-29 05:05:13,704 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 30 treesize of output 13 [2023-11-29 05:05:13,720 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 31 treesize of output 13 [2023-11-29 05:05:13,728 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 9 treesize of output 3 [2023-11-29 05:05:13,772 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 87 refuted. 0 times theorem prover too weak. 903 trivial. 0 not checked. [2023-11-29 05:05:13,772 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 05:05:14,021 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse0 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (and (forall ((v_ArrVal_7866 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7865 (Array (_ BitVec 32) (_ BitVec 32)))) (bvule (bvadd (select (select (store |c_#memory_$Pointer$#4.offset| |c_ULTIMATE.start_main_#t~mem75#1.base| v_ArrVal_7866) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0) (_ bv12 32)) (select |c_#length| (select (select (store |c_#memory_$Pointer$#4.base| |c_ULTIMATE.start_main_#t~mem75#1.base| v_ArrVal_7865) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0)))) (forall ((v_ArrVal_7866 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse1 (select (select (store |c_#memory_$Pointer$#4.offset| |c_ULTIMATE.start_main_#t~mem75#1.base| v_ArrVal_7866) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0))) (bvule (bvadd (_ bv8 32) .cse1) (bvadd .cse1 (_ bv12 32))))))) is different from false [2023-11-29 05:05:14,060 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse2 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (let ((.cse1 (select (select |c_#memory_$Pointer$#4.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (and (forall ((v_ArrVal_7866 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (select (store |c_#memory_$Pointer$#4.offset| .cse1 v_ArrVal_7866) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (bvule (bvadd (_ bv8 32) .cse0) (bvadd .cse0 (_ bv12 32))))) (forall ((v_ArrVal_7866 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7865 (Array (_ BitVec 32) (_ BitVec 32)))) (bvule (bvadd (select (select (store |c_#memory_$Pointer$#4.offset| .cse1 v_ArrVal_7866) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2) (_ bv12 32)) (select |c_#length| (select (select (store |c_#memory_$Pointer$#4.base| .cse1 v_ArrVal_7865) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))))))) is different from false [2023-11-29 05:05:14,112 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (and (forall ((v_ArrVal_7866 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7864 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7863 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (select (store (store |c_#memory_$Pointer$#4.offset| |c_ULTIMATE.start_main_#t~mem74#1.base| v_ArrVal_7863) (select (select (store |c_#memory_$Pointer$#4.base| |c_ULTIMATE.start_main_#t~mem74#1.base| v_ArrVal_7864) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_7866) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (bvule (bvadd (_ bv8 32) .cse0) (bvadd .cse0 (_ bv12 32))))) (forall ((v_ArrVal_7866 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7865 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7864 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7863 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse3 (store |c_#memory_$Pointer$#4.base| |c_ULTIMATE.start_main_#t~mem74#1.base| v_ArrVal_7864))) (let ((.cse2 (select (select .cse3 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (bvule (bvadd (select (select (store (store |c_#memory_$Pointer$#4.offset| |c_ULTIMATE.start_main_#t~mem74#1.base| v_ArrVal_7863) .cse2 v_ArrVal_7866) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) (_ bv12 32)) (select |c_#length| (select (select (store .cse3 .cse2 v_ArrVal_7865) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))))))) is different from false [2023-11-29 05:05:14,170 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse2 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (let ((.cse0 (select (select |c_#memory_$Pointer$#4.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (and (forall ((v_ArrVal_7866 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7865 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7864 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7863 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse3 (store |c_#memory_$Pointer$#4.base| .cse0 v_ArrVal_7864))) (let ((.cse1 (select (select .cse3 |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (bvule (bvadd (select (select (store (store |c_#memory_$Pointer$#4.offset| .cse0 v_ArrVal_7863) .cse1 v_ArrVal_7866) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2) (_ bv12 32)) (select |c_#length| (select (select (store .cse3 .cse1 v_ArrVal_7865) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2)))))) (forall ((v_ArrVal_7866 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7864 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7863 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse4 (select (select (store (store |c_#memory_$Pointer$#4.offset| .cse0 v_ArrVal_7863) (select (select (store |c_#memory_$Pointer$#4.base| .cse0 v_ArrVal_7864) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2) v_ArrVal_7866) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (bvule (bvadd .cse4 (_ bv8 32)) (bvadd .cse4 (_ bv12 32)))))))) is different from false [2023-11-29 05:05:16,111 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse2 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (and (forall ((v_ArrVal_7958 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7957 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7866 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7865 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7864 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7863 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse4 (store |c_#memory_$Pointer$#4.base| |c_ULTIMATE.start_main_#t~mem73#1.base| v_ArrVal_7957))) (let ((.cse0 (select (select .cse4 |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (let ((.cse3 (store .cse4 .cse0 v_ArrVal_7864))) (let ((.cse1 (select (select .cse3 |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (bvule (bvadd (select (select (store (store (store |c_#memory_$Pointer$#4.offset| |c_ULTIMATE.start_main_#t~mem73#1.base| v_ArrVal_7958) .cse0 v_ArrVal_7863) .cse1 v_ArrVal_7866) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2) (_ bv12 32)) (select |c_#length| (select (select (store .cse3 .cse1 v_ArrVal_7865) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2)))))))) (forall ((v_ArrVal_7958 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7957 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7866 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7864 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_7863 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse5 (select (select (let ((.cse7 (store |c_#memory_$Pointer$#4.base| |c_ULTIMATE.start_main_#t~mem73#1.base| v_ArrVal_7957))) (let ((.cse6 (select (select .cse7 |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (store (store (store |c_#memory_$Pointer$#4.offset| |c_ULTIMATE.start_main_#t~mem73#1.base| v_ArrVal_7958) .cse6 v_ArrVal_7863) (select (select (store .cse7 .cse6 v_ArrVal_7864) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2) v_ArrVal_7866))) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (bvule (bvadd (_ bv8 32) .cse5) (bvadd .cse5 (_ bv12 32))))))) is different from false [2023-11-29 05:05:16,130 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 05:05:16,130 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [93320443] [2023-11-29 05:05:16,130 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [93320443] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 05:05:16,130 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [786926159] [2023-11-29 05:05:16,130 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:05:16,130 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-11-29 05:05:16,131 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b425b1b8-e56b-4a99-86a6-15bfbfde3f34/bin/uautomizer-verify-BQ2R08f2Ya/cvc4 [2023-11-29 05:05:16,131 INFO L229 MonitoredProcess]: Starting monitored process 39 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b425b1b8-e56b-4a99-86a6-15bfbfde3f34/bin/uautomizer-verify-BQ2R08f2Ya/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-11-29 05:05:16,132 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b425b1b8-e56b-4a99-86a6-15bfbfde3f34/bin/uautomizer-verify-BQ2R08f2Ya/cvc4 --incremental --print-success --lang smt (39)] Waiting until timeout for monitored process [2023-11-29 05:07:45,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:07:45,941 INFO L262 TraceCheckSpWp]: Trace formula consists of 924 conjuncts, 126 conjunts are in the unsatisfiable core [2023-11-29 05:07:45,951 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 05:07:45,958 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 [2023-11-29 05:07:46,553 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 [2023-11-29 05:07:46,585 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2023-11-29 05:07:46,586 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 [2023-11-29 05:07:46,713 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 [2023-11-29 05:07:46,724 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 [2023-11-29 05:07:47,054 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 18 treesize of output 10 [2023-11-29 05:07:47,061 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 [2023-11-29 05:07:48,507 INFO L349 Elim1Store]: treesize reduction 19, result has 20.8 percent of original size [2023-11-29 05:07:48,507 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 50 treesize of output 45 [2023-11-29 05:07:48,524 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 [2023-11-29 05:07:48,834 INFO L349 Elim1Store]: treesize reduction 19, result has 20.8 percent of original size [2023-11-29 05:07:48,834 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 50 treesize of output 45 [2023-11-29 05:07:48,853 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 [2023-11-29 05:07:49,046 INFO L349 Elim1Store]: treesize reduction 19, result has 20.8 percent of original size [2023-11-29 05:07:49,047 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 50 treesize of output 45 [2023-11-29 05:07:49,064 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 [2023-11-29 05:07:49,079 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 [2023-11-29 05:07:49,090 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 [2023-11-29 05:07:49,096 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 87 refuted. 0 times theorem prover too weak. 903 trivial. 0 not checked. [2023-11-29 05:07:49,096 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 05:07:49,167 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse0 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (and (forall ((v_ArrVal_8462 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8461 (Array (_ BitVec 32) (_ BitVec 32)))) (bvule (bvadd (select (select (store |c_#memory_$Pointer$#4.offset| |c_ULTIMATE.start_main_#t~mem75#1.base| v_ArrVal_8462) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0) (_ bv12 32)) (select |c_#length| (select (select (store |c_#memory_$Pointer$#4.base| |c_ULTIMATE.start_main_#t~mem75#1.base| v_ArrVal_8461) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0)))) (forall ((v_ArrVal_8462 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse1 (select (select (store |c_#memory_$Pointer$#4.offset| |c_ULTIMATE.start_main_#t~mem75#1.base| v_ArrVal_8462) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0))) (bvule (bvadd (_ bv8 32) .cse1) (bvadd .cse1 (_ bv12 32))))))) is different from false [2023-11-29 05:07:49,208 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (let ((.cse0 (select (select |c_#memory_$Pointer$#4.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (and (forall ((v_ArrVal_8462 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8461 (Array (_ BitVec 32) (_ BitVec 32)))) (bvule (bvadd (select (select (store |c_#memory_$Pointer$#4.offset| .cse0 v_ArrVal_8462) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) (_ bv12 32)) (select |c_#length| (select (select (store |c_#memory_$Pointer$#4.base| .cse0 v_ArrVal_8461) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))) (forall ((v_ArrVal_8462 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse2 (select (select (store |c_#memory_$Pointer$#4.offset| .cse0 v_ArrVal_8462) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (bvule (bvadd (_ bv8 32) .cse2) (bvadd .cse2 (_ bv12 32)))))))) is different from false [2023-11-29 05:07:49,255 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (and (forall ((v_ArrVal_8462 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8461 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8460 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8459 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse2 (store |c_#memory_$Pointer$#4.base| |c_ULTIMATE.start_main_#t~mem74#1.base| v_ArrVal_8460))) (let ((.cse0 (select (select .cse2 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (bvule (bvadd (select (select (store (store |c_#memory_$Pointer$#4.offset| |c_ULTIMATE.start_main_#t~mem74#1.base| v_ArrVal_8459) .cse0 v_ArrVal_8462) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) (_ bv12 32)) (select |c_#length| (select (select (store .cse2 .cse0 v_ArrVal_8461) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))))) (forall ((v_ArrVal_8462 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8460 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8459 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse3 (select (select (store (store |c_#memory_$Pointer$#4.offset| |c_ULTIMATE.start_main_#t~mem74#1.base| v_ArrVal_8459) (select (select (store |c_#memory_$Pointer$#4.base| |c_ULTIMATE.start_main_#t~mem74#1.base| v_ArrVal_8460) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_8462) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (bvule (bvadd .cse3 (_ bv8 32)) (bvadd .cse3 (_ bv12 32))))))) is different from false [2023-11-29 05:07:49,309 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse2 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (let ((.cse1 (select (select |c_#memory_$Pointer$#4.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (and (forall ((v_ArrVal_8462 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8460 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8459 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (select (store (store |c_#memory_$Pointer$#4.offset| .cse1 v_ArrVal_8459) (select (select (store |c_#memory_$Pointer$#4.base| .cse1 v_ArrVal_8460) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2) v_ArrVal_8462) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (bvule (bvadd (_ bv8 32) .cse0) (bvadd .cse0 (_ bv12 32))))) (forall ((v_ArrVal_8462 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8461 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8460 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8459 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse4 (store |c_#memory_$Pointer$#4.base| .cse1 v_ArrVal_8460))) (let ((.cse3 (select (select .cse4 |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (bvule (bvadd (select (select (store (store |c_#memory_$Pointer$#4.offset| .cse1 v_ArrVal_8459) .cse3 v_ArrVal_8462) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2) (_ bv12 32)) (select |c_#length| (select (select (store .cse4 .cse3 v_ArrVal_8461) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))))))))) is different from false [2023-11-29 05:07:50,988 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse3 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (and (forall ((v_ArrVal_8462 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8460 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8459 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8554 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8553 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (select (let ((.cse2 (store |c_#memory_$Pointer$#4.base| |c_ULTIMATE.start_main_#t~mem73#1.base| v_ArrVal_8554))) (let ((.cse1 (select (select .cse2 |c_ULTIMATE.start_main_~user~0#1.base|) .cse3))) (store (store (store |c_#memory_$Pointer$#4.offset| |c_ULTIMATE.start_main_#t~mem73#1.base| v_ArrVal_8553) .cse1 v_ArrVal_8459) (select (select (store .cse2 .cse1 v_ArrVal_8460) |c_ULTIMATE.start_main_~user~0#1.base|) .cse3) v_ArrVal_8462))) |c_ULTIMATE.start_main_~user~0#1.base|) .cse3))) (bvule (bvadd .cse0 (_ bv8 32)) (bvadd .cse0 (_ bv12 32))))) (forall ((v_ArrVal_8462 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8461 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8460 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8459 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8554 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_8553 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse7 (store |c_#memory_$Pointer$#4.base| |c_ULTIMATE.start_main_#t~mem73#1.base| v_ArrVal_8554))) (let ((.cse4 (select (select .cse7 |c_ULTIMATE.start_main_~user~0#1.base|) .cse3))) (let ((.cse6 (store .cse7 .cse4 v_ArrVal_8460))) (let ((.cse5 (select (select .cse6 |c_ULTIMATE.start_main_~user~0#1.base|) .cse3))) (bvule (bvadd (select (select (store (store (store |c_#memory_$Pointer$#4.offset| |c_ULTIMATE.start_main_#t~mem73#1.base| v_ArrVal_8553) .cse4 v_ArrVal_8459) .cse5 v_ArrVal_8462) |c_ULTIMATE.start_main_~user~0#1.base|) .cse3) (_ bv12 32)) (select |c_#length| (select (select (store .cse6 .cse5 v_ArrVal_8461) |c_ULTIMATE.start_main_~user~0#1.base|) .cse3)))))))))) is different from false [2023-11-29 05:07:51,003 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [786926159] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 05:07:51,003 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 05:07:51,003 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 21 [2023-11-29 05:07:51,004 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1118000856] [2023-11-29 05:07:51,004 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 05:07:51,004 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2023-11-29 05:07:51,004 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 05:07:51,004 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2023-11-29 05:07:51,005 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=487, Unknown=10, NotChecked=530, Total=1122 [2023-11-29 05:07:51,005 INFO L87 Difference]: Start difference. First operand 1739 states and 2568 transitions. Second operand has 22 states, 18 states have (on average 7.555555555555555) internal successors, (136), 18 states have internal predecessors, (136), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2023-11-29 05:08:41,660 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:08:41,660 INFO L93 Difference]: Finished difference Result 2431 states and 3371 transitions. [2023-11-29 05:08:41,661 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-11-29 05:08:41,661 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 18 states have (on average 7.555555555555555) internal successors, (136), 18 states have internal predecessors, (136), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) Word has length 124 [2023-11-29 05:08:41,661 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:08:41,668 INFO L225 Difference]: With dead ends: 2431 [2023-11-29 05:08:41,669 INFO L226 Difference]: Without dead ends: 2431 [2023-11-29 05:08:41,669 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 271 GetRequests, 227 SyntacticMatches, 3 SemanticMatches, 41 ConstructedPredicates, 10 IntricatePredicates, 0 DeprecatedPredicates, 227 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=168, Invalid=918, Unknown=10, NotChecked=710, Total=1806 [2023-11-29 05:08:41,670 INFO L413 NwaCegarLoop]: 618 mSDtfsCounter, 1177 mSDsluCounter, 5835 mSDsCounter, 0 mSdLazyCounter, 14600 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 44.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1179 SdHoareTripleChecker+Valid, 6453 SdHoareTripleChecker+Invalid, 14627 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 14600 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 49.6s IncrementalHoareTripleChecker+Time [2023-11-29 05:08:41,670 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1179 Valid, 6453 Invalid, 14627 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [27 Valid, 14600 Invalid, 0 Unknown, 0 Unchecked, 49.6s Time] [2023-11-29 05:08:41,672 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2431 states. [2023-11-29 05:08:41,685 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2431 to 1738. [2023-11-29 05:08:41,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1738 states, 1309 states have (on average 1.9029793735676088) internal successors, (2491), 1694 states have internal predecessors, (2491), 38 states have call successors, (38), 22 states have call predecessors, (38), 19 states have return successors, (37), 24 states have call predecessors, (37), 34 states have call successors, (37) [2023-11-29 05:08:41,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1738 states to 1738 states and 2566 transitions. [2023-11-29 05:08:41,689 INFO L78 Accepts]: Start accepts. Automaton has 1738 states and 2566 transitions. Word has length 124 [2023-11-29 05:08:41,689 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:08:41,689 INFO L495 AbstractCegarLoop]: Abstraction has 1738 states and 2566 transitions. [2023-11-29 05:08:41,689 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 18 states have (on average 7.555555555555555) internal successors, (136), 18 states have internal predecessors, (136), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2023-11-29 05:08:41,689 INFO L276 IsEmpty]: Start isEmpty. Operand 1738 states and 2566 transitions. [2023-11-29 05:08:41,690 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2023-11-29 05:08:41,690 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:08:41,690 INFO L195 NwaCegarLoop]: trace histogram [44, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 05:08:41,741 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b425b1b8-e56b-4a99-86a6-15bfbfde3f34/bin/uautomizer-verify-BQ2R08f2Ya/cvc4 --incremental --print-success --lang smt (39)] Ended with exit code 0 [2023-11-29 05:08:41,900 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b425b1b8-e56b-4a99-86a6-15bfbfde3f34/bin/uautomizer-verify-BQ2R08f2Ya/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 (38)] Ended with exit code 0 [2023-11-29 05:08:42,090 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 39 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b425b1b8-e56b-4a99-86a6-15bfbfde3f34/bin/uautomizer-verify-BQ2R08f2Ya/cvc4 --incremental --print-success --lang smt,38 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b425b1b8-e56b-4a99-86a6-15bfbfde3f34/bin/uautomizer-verify-BQ2R08f2Ya/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 [2023-11-29 05:08:42,091 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr90REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, alt_mallocErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alt_mallocErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 525 more)] === [2023-11-29 05:08:42,091 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:08:42,091 INFO L85 PathProgramCache]: Analyzing trace with hash 1186384054, now seen corresponding path program 1 times [2023-11-29 05:08:42,092 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 05:08:42,092 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [743317921] [2023-11-29 05:08:42,092 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:08:42,092 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 [2023-11-29 05:08:42,092 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b425b1b8-e56b-4a99-86a6-15bfbfde3f34/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 05:08:42,093 INFO L229 MonitoredProcess]: Starting monitored process 40 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b425b1b8-e56b-4a99-86a6-15bfbfde3f34/bin/uautomizer-verify-BQ2R08f2Ya/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) [2023-11-29 05:08:42,093 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b425b1b8-e56b-4a99-86a6-15bfbfde3f34/bin/uautomizer-verify-BQ2R08f2Ya/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 (40)] Waiting until timeout for monitored process [2023-11-29 05:08:43,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:08:43,368 INFO L262 TraceCheckSpWp]: Trace formula consists of 952 conjuncts, 70 conjunts are in the unsatisfiable core [2023-11-29 05:08:43,375 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 05:08:43,380 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 [2023-11-29 05:08:43,715 INFO L349 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2023-11-29 05:08:43,715 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 19 treesize of output 27 [2023-11-29 05:08:43,787 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2023-11-29 05:08:43,971 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 24 treesize of output 12 [2023-11-29 05:08:45,935 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2023-11-29 05:08:45,935 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 44 treesize of output 43 [2023-11-29 05:08:46,143 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2023-11-29 05:08:46,143 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 44 treesize of output 43 [2023-11-29 05:08:46,309 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2023-11-29 05:08:46,310 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 44 treesize of output 43 [2023-11-29 05:08:46,473 INFO L349 Elim1Store]: treesize reduction 21, result has 19.2 percent of original size [2023-11-29 05:08:46,473 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 44 treesize of output 43 [2023-11-29 05:08:46,492 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 15 [2023-11-29 05:08:46,581 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 87 refuted. 0 times theorem prover too weak. 903 trivial. 0 not checked. [2023-11-29 05:08:46,581 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 05:08:50,855 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_9026 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (select |c_#valid| (let ((.cse0 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (store |c_#memory_$Pointer$#4.base| (select (select |c_#memory_$Pointer$#4.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse0) v_ArrVal_9026) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0))) (_ bv1 1)))) is different from false [2023-11-29 05:08:50,876 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_9026 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_9025 (Array (_ BitVec 32) (_ BitVec 32)))) (= (bvadd (select |c_#valid| (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (let ((.cse0 (store |c_#memory_$Pointer$#4.base| |c_ULTIMATE.start_main_#t~mem75#1.base| v_ArrVal_9025))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_9026)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (_ bv1 1)) (_ bv0 1))) is different from false [2023-11-29 05:08:50,897 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_9026 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_9025 (Array (_ BitVec 32) (_ BitVec 32)))) (= (bvadd (select |c_#valid| (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (let ((.cse0 (store |c_#memory_$Pointer$#4.base| (select (select |c_#memory_$Pointer$#4.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_9025))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_9026)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (_ bv1 1)) (_ bv0 1))) is different from false [2023-11-29 05:08:50,922 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_9024 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_9026 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_9025 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (select |c_#valid| (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (let ((.cse0 (let ((.cse2 (store |c_#memory_$Pointer$#4.base| |c_ULTIMATE.start_main_#t~mem74#1.base| v_ArrVal_9024))) (store .cse2 (select (select .cse2 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_9025)))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_9026)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (_ bv1 1)))) is different from false [2023-11-29 05:08:50,948 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_9024 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_9026 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_9025 (Array (_ BitVec 32) (_ BitVec 32)))) (= (bvadd (select |c_#valid| (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (let ((.cse0 (let ((.cse2 (store |c_#memory_$Pointer$#4.base| (select (select |c_#memory_$Pointer$#4.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_9024))) (store .cse2 (select (select .cse2 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_9025)))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_9026)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (_ bv1 1)) (_ bv0 1))) is different from false [2023-11-29 05:08:51,541 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_9024 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_9072 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_9026 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_9025 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (_ bv1 1) (select |c_#valid| (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (let ((.cse0 (let ((.cse2 (let ((.cse3 (store |c_#memory_$Pointer$#4.base| |c_ULTIMATE.start_main_#t~mem73#1.base| v_ArrVal_9072))) (store .cse3 (select (select .cse3 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_9024)))) (store .cse2 (select (select .cse2 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_9025)))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_9026)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))))) is different from false [2023-11-29 05:08:51,548 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 05:08:51,548 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [743317921] [2023-11-29 05:08:51,548 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [743317921] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 05:08:51,548 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [713795733] [2023-11-29 05:08:51,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:08:51,548 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-11-29 05:08:51,548 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b425b1b8-e56b-4a99-86a6-15bfbfde3f34/bin/uautomizer-verify-BQ2R08f2Ya/cvc4 [2023-11-29 05:08:51,549 INFO L229 MonitoredProcess]: Starting monitored process 41 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b425b1b8-e56b-4a99-86a6-15bfbfde3f34/bin/uautomizer-verify-BQ2R08f2Ya/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-11-29 05:08:51,550 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b425b1b8-e56b-4a99-86a6-15bfbfde3f34/bin/uautomizer-verify-BQ2R08f2Ya/cvc4 --incremental --print-success --lang smt (41)] Waiting until timeout for monitored process [2023-11-29 05:08:58,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:08:58,928 INFO L262 TraceCheckSpWp]: Trace formula consists of 952 conjuncts, 74 conjunts are in the unsatisfiable core [2023-11-29 05:08:58,936 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 05:08:58,949 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 [2023-11-29 05:08:59,593 INFO L349 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2023-11-29 05:08:59,593 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 19 treesize of output 27 [2023-11-29 05:08:59,712 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 [2023-11-29 05:09:00,042 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 20 treesize of output 12 [2023-11-29 05:09:01,786 INFO L349 Elim1Store]: treesize reduction 19, result has 20.8 percent of original size [2023-11-29 05:09:01,786 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 [2023-11-29 05:09:02,099 INFO L349 Elim1Store]: treesize reduction 19, result has 20.8 percent of original size [2023-11-29 05:09:02,100 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 [2023-11-29 05:09:02,326 INFO L349 Elim1Store]: treesize reduction 19, result has 20.8 percent of original size [2023-11-29 05:09:02,326 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 [2023-11-29 05:09:02,559 INFO L349 Elim1Store]: treesize reduction 19, result has 20.8 percent of original size [2023-11-29 05:09:02,559 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 [2023-11-29 05:09:02,595 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 [2023-11-29 05:09:02,613 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 87 refuted. 0 times theorem prover too weak. 903 trivial. 0 not checked. [2023-11-29 05:09:02,613 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 05:09:02,641 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_9544 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (select |c_#valid| (select (select (store |c_#memory_$Pointer$#4.base| |c_ULTIMATE.start_main_#t~mem76#1.base| v_ArrVal_9544) |c_ULTIMATE.start_main_~user~0#1.base|) (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (_ bv1 1)))) is different from false [2023-11-29 05:09:02,666 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_9544 (Array (_ BitVec 32) (_ BitVec 32)))) (= (_ bv0 1) (bvadd (_ bv1 1) (select |c_#valid| (let ((.cse0 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (store |c_#memory_$Pointer$#4.base| (select (select |c_#memory_$Pointer$#4.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse0) v_ArrVal_9544) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0)))))) is different from false [2023-11-29 05:09:02,689 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_9544 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_9543 (Array (_ BitVec 32) (_ BitVec 32)))) (= (bvadd (select |c_#valid| (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (let ((.cse0 (store |c_#memory_$Pointer$#4.base| |c_ULTIMATE.start_main_#t~mem75#1.base| v_ArrVal_9543))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_9544)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (_ bv1 1)) (_ bv0 1))) is different from false [2023-11-29 05:09:02,921 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_9544 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_9543 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_9542 (Array (_ BitVec 32) (_ BitVec 32)))) (= (bvadd (select |c_#valid| (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (let ((.cse0 (let ((.cse2 (store |c_#memory_$Pointer$#4.base| |c_ULTIMATE.start_main_#t~mem74#1.base| v_ArrVal_9542))) (store .cse2 (select (select .cse2 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_9543)))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_9544)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (_ bv1 1)) (_ bv0 1))) is different from false [2023-11-29 05:09:03,742 WARN L854 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_9590 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_9544 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_9543 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_9542 (Array (_ BitVec 32) (_ BitVec 32)))) (= (bvadd (select |c_#valid| (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (select (select (let ((.cse0 (let ((.cse2 (let ((.cse3 (store |c_#memory_$Pointer$#4.base| |c_ULTIMATE.start_main_#t~mem73#1.base| v_ArrVal_9590))) (store .cse3 (select (select .cse3 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_9542)))) (store .cse2 (select (select .cse2 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_9543)))) (store .cse0 (select (select .cse0 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_9544)) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (_ bv1 1)) (_ bv0 1))) is different from false [2023-11-29 05:09:03,748 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [713795733] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 05:09:03,748 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-29 05:09:03,748 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 22 [2023-11-29 05:09:03,749 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [979593099] [2023-11-29 05:09:03,749 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-29 05:09:03,749 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2023-11-29 05:09:03,749 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-29 05:09:03,750 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2023-11-29 05:09:03,751 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=150, Invalid=623, Unknown=27, NotChecked=682, Total=1482 [2023-11-29 05:09:03,751 INFO L87 Difference]: Start difference. First operand 1738 states and 2566 transitions. Second operand has 23 states, 19 states have (on average 7.368421052631579) internal successors, (140), 20 states have internal predecessors, (140), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2023-11-29 05:09:09,063 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] [2023-11-29 05:09:13,067 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 05:09:17,168 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-29 05:09:21,171 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] [2023-11-29 05:09:42,157 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 05:09:42,157 INFO L93 Difference]: Finished difference Result 2121 states and 3074 transitions. [2023-11-29 05:09:42,157 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-11-29 05:09:42,158 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 19 states have (on average 7.368421052631579) internal successors, (140), 20 states have internal predecessors, (140), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) Word has length 126 [2023-11-29 05:09:42,158 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 05:09:42,160 INFO L225 Difference]: With dead ends: 2121 [2023-11-29 05:09:42,160 INFO L226 Difference]: Without dead ends: 2121 [2023-11-29 05:09:42,161 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 275 GetRequests, 230 SyntacticMatches, 3 SemanticMatches, 42 ConstructedPredicates, 11 IntricatePredicates, 0 DeprecatedPredicates, 279 ImplicationChecksByTransitivity, 6.9s TimeCoverageRelationStatistics Valid=187, Invalid=882, Unknown=31, NotChecked=792, Total=1892 [2023-11-29 05:09:42,161 INFO L413 NwaCegarLoop]: 389 mSDtfsCounter, 723 mSDsluCounter, 4907 mSDsCounter, 0 mSdLazyCounter, 6603 mSolverCounterSat, 22 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 35.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 725 SdHoareTripleChecker+Valid, 5296 SdHoareTripleChecker+Invalid, 6629 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 6603 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 37.8s IncrementalHoareTripleChecker+Time [2023-11-29 05:09:42,161 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [725 Valid, 5296 Invalid, 6629 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [22 Valid, 6603 Invalid, 4 Unknown, 0 Unchecked, 37.8s Time] [2023-11-29 05:09:42,163 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2121 states. [2023-11-29 05:09:42,176 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2121 to 1737. [2023-11-29 05:09:42,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1737 states, 1309 states have (on average 1.9014514896867838) internal successors, (2489), 1693 states have internal predecessors, (2489), 38 states have call successors, (38), 22 states have call predecessors, (38), 19 states have return successors, (37), 24 states have call predecessors, (37), 34 states have call successors, (37) [2023-11-29 05:09:42,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1737 states to 1737 states and 2564 transitions. [2023-11-29 05:09:42,180 INFO L78 Accepts]: Start accepts. Automaton has 1737 states and 2564 transitions. Word has length 126 [2023-11-29 05:09:42,180 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 05:09:42,180 INFO L495 AbstractCegarLoop]: Abstraction has 1737 states and 2564 transitions. [2023-11-29 05:09:42,180 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 19 states have (on average 7.368421052631579) internal successors, (140), 20 states have internal predecessors, (140), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2023-11-29 05:09:42,180 INFO L276 IsEmpty]: Start isEmpty. Operand 1737 states and 2564 transitions. [2023-11-29 05:09:42,180 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2023-11-29 05:09:42,180 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 05:09:42,181 INFO L195 NwaCegarLoop]: trace histogram [44, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 05:09:42,191 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b425b1b8-e56b-4a99-86a6-15bfbfde3f34/bin/uautomizer-verify-BQ2R08f2Ya/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 (40)] Ended with exit code 0 [2023-11-29 05:09:42,420 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b425b1b8-e56b-4a99-86a6-15bfbfde3f34/bin/uautomizer-verify-BQ2R08f2Ya/cvc4 --incremental --print-success --lang smt (41)] Ended with exit code 0 [2023-11-29 05:09:42,582 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 40 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b425b1b8-e56b-4a99-86a6-15bfbfde3f34/bin/uautomizer-verify-BQ2R08f2Ya/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,41 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b425b1b8-e56b-4a99-86a6-15bfbfde3f34/bin/uautomizer-verify-BQ2R08f2Ya/cvc4 --incremental --print-success --lang smt [2023-11-29 05:09:42,583 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr91REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, alt_mallocErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, alt_mallocErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 525 more)] === [2023-11-29 05:09:42,583 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 05:09:42,584 INFO L85 PathProgramCache]: Analyzing trace with hash 1186384055, now seen corresponding path program 1 times [2023-11-29 05:09:42,586 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-29 05:09:42,586 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [205363530] [2023-11-29 05:09:42,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:09:42,587 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 [2023-11-29 05:09:42,587 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b425b1b8-e56b-4a99-86a6-15bfbfde3f34/bin/uautomizer-verify-BQ2R08f2Ya/mathsat [2023-11-29 05:09:42,590 INFO L229 MonitoredProcess]: Starting monitored process 42 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b425b1b8-e56b-4a99-86a6-15bfbfde3f34/bin/uautomizer-verify-BQ2R08f2Ya/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) [2023-11-29 05:09:42,592 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b425b1b8-e56b-4a99-86a6-15bfbfde3f34/bin/uautomizer-verify-BQ2R08f2Ya/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 (42)] Waiting until timeout for monitored process [2023-11-29 05:09:43,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 05:09:43,767 INFO L262 TraceCheckSpWp]: Trace formula consists of 952 conjuncts, 129 conjunts are in the unsatisfiable core [2023-11-29 05:09:43,777 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 05:09:43,786 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 [2023-11-29 05:09:44,365 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 [2023-11-29 05:09:44,443 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2023-11-29 05:09:44,443 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 [2023-11-29 05:09:44,525 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 [2023-11-29 05:09:44,537 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 [2023-11-29 05:09:44,738 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 18 treesize of output 10 [2023-11-29 05:09:44,744 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 [2023-11-29 05:09:46,376 INFO L349 Elim1Store]: treesize reduction 19, result has 20.8 percent of original size [2023-11-29 05:09:46,376 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 50 treesize of output 45 [2023-11-29 05:09:46,389 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 [2023-11-29 05:09:46,621 INFO L349 Elim1Store]: treesize reduction 19, result has 20.8 percent of original size [2023-11-29 05:09:46,622 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 50 treesize of output 45 [2023-11-29 05:09:46,639 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 [2023-11-29 05:09:46,802 INFO L349 Elim1Store]: treesize reduction 19, result has 20.8 percent of original size [2023-11-29 05:09:46,803 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 50 treesize of output 45 [2023-11-29 05:09:46,810 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 [2023-11-29 05:09:46,991 INFO L349 Elim1Store]: treesize reduction 19, result has 20.8 percent of original size [2023-11-29 05:09:46,991 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 50 treesize of output 45 [2023-11-29 05:09:47,003 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 [2023-11-29 05:09:47,025 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 [2023-11-29 05:09:47,033 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 [2023-11-29 05:09:47,108 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 87 refuted. 0 times theorem prover too weak. 903 trivial. 0 not checked. [2023-11-29 05:09:47,108 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 05:09:47,398 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse0 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (and (forall ((v_ArrVal_10110 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_10111 (Array (_ BitVec 32) (_ BitVec 32)))) (bvule (bvadd (select (select (store |c_#memory_$Pointer$#4.offset| |c_ULTIMATE.start_main_#t~mem76#1.base| v_ArrVal_10111) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0) (_ bv24 32)) (select |c_#length| (select (select (store |c_#memory_$Pointer$#4.base| |c_ULTIMATE.start_main_#t~mem76#1.base| v_ArrVal_10110) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0)))) (forall ((v_ArrVal_10111 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse1 (select (select (store |c_#memory_$Pointer$#4.offset| |c_ULTIMATE.start_main_#t~mem76#1.base| v_ArrVal_10111) |c_ULTIMATE.start_main_~user~0#1.base|) .cse0))) (bvule (bvadd .cse1 (_ bv20 32)) (bvadd .cse1 (_ bv24 32))))))) is different from false [2023-11-29 05:09:47,445 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (let ((.cse0 (select (select |c_#memory_$Pointer$#4.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (and (forall ((v_ArrVal_10110 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_10111 (Array (_ BitVec 32) (_ BitVec 32)))) (bvule (bvadd (select (select (store |c_#memory_$Pointer$#4.offset| .cse0 v_ArrVal_10111) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) (_ bv24 32)) (select |c_#length| (select (select (store |c_#memory_$Pointer$#4.base| .cse0 v_ArrVal_10110) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))) (forall ((v_ArrVal_10111 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse2 (select (select (store |c_#memory_$Pointer$#4.offset| .cse0 v_ArrVal_10111) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (bvule (bvadd .cse2 (_ bv20 32)) (bvadd .cse2 (_ bv24 32)))))))) is different from false [2023-11-29 05:09:47,509 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse1 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (and (forall ((v_ArrVal_10110 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_10111 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_10108 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_10109 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse2 (store |c_#memory_$Pointer$#4.base| |c_ULTIMATE.start_main_#t~mem75#1.base| v_ArrVal_10108))) (let ((.cse0 (select (select .cse2 |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (bvule (bvadd (select (select (store (store |c_#memory_$Pointer$#4.offset| |c_ULTIMATE.start_main_#t~mem75#1.base| v_ArrVal_10109) .cse0 v_ArrVal_10111) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) (_ bv24 32)) (select |c_#length| (select (select (store .cse2 .cse0 v_ArrVal_10110) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1)))))) (forall ((v_ArrVal_10111 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_10108 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_10109 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse3 (select (select (store (store |c_#memory_$Pointer$#4.offset| |c_ULTIMATE.start_main_#t~mem75#1.base| v_ArrVal_10109) (select (select (store |c_#memory_$Pointer$#4.base| |c_ULTIMATE.start_main_#t~mem75#1.base| v_ArrVal_10108) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1) v_ArrVal_10111) |c_ULTIMATE.start_main_~user~0#1.base|) .cse1))) (bvule (bvadd .cse3 (_ bv20 32)) (bvadd .cse3 (_ bv24 32))))))) is different from false [2023-11-29 05:09:47,583 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse2 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (let ((.cse0 (select (select |c_#memory_$Pointer$#4.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (and (forall ((v_ArrVal_10110 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_10111 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_10108 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_10109 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse3 (store |c_#memory_$Pointer$#4.base| .cse0 v_ArrVal_10108))) (let ((.cse1 (select (select .cse3 |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (bvule (bvadd (select (select (store (store |c_#memory_$Pointer$#4.offset| .cse0 v_ArrVal_10109) .cse1 v_ArrVal_10111) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2) (_ bv24 32)) (select |c_#length| (select (select (store .cse3 .cse1 v_ArrVal_10110) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2)))))) (forall ((v_ArrVal_10111 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_10108 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_10109 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse4 (select (select (store (store |c_#memory_$Pointer$#4.offset| .cse0 v_ArrVal_10109) (select (select (store |c_#memory_$Pointer$#4.base| .cse0 v_ArrVal_10108) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2) v_ArrVal_10111) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (bvule (bvadd .cse4 (_ bv20 32)) (bvadd .cse4 (_ bv24 32)))))))) is different from false [2023-11-29 05:09:47,798 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse2 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (and (forall ((v_ArrVal_10110 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_10111 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_10106 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_10107 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_10108 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_10109 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse4 (store |c_#memory_$Pointer$#4.base| |c_ULTIMATE.start_main_#t~mem74#1.base| v_ArrVal_10107))) (let ((.cse0 (select (select .cse4 |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (let ((.cse3 (store .cse4 .cse0 v_ArrVal_10108))) (let ((.cse1 (select (select .cse3 |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (bvule (bvadd (select (select (store (store (store |c_#memory_$Pointer$#4.offset| |c_ULTIMATE.start_main_#t~mem74#1.base| v_ArrVal_10106) .cse0 v_ArrVal_10109) .cse1 v_ArrVal_10111) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2) (_ bv24 32)) (select |c_#length| (select (select (store .cse3 .cse1 v_ArrVal_10110) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2)))))))) (forall ((v_ArrVal_10111 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_10106 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_10107 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_10108 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_10109 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse5 (select (select (let ((.cse7 (store |c_#memory_$Pointer$#4.base| |c_ULTIMATE.start_main_#t~mem74#1.base| v_ArrVal_10107))) (let ((.cse6 (select (select .cse7 |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (store (store (store |c_#memory_$Pointer$#4.offset| |c_ULTIMATE.start_main_#t~mem74#1.base| v_ArrVal_10106) .cse6 v_ArrVal_10109) (select (select (store .cse7 .cse6 v_ArrVal_10108) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2) v_ArrVal_10111))) |c_ULTIMATE.start_main_~user~0#1.base|) .cse2))) (bvule (bvadd .cse5 (_ bv20 32)) (bvadd .cse5 (_ bv24 32))))))) is different from false [2023-11-29 05:09:48,921 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse4 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (let ((.cse1 (select (select |c_#memory_$Pointer$#4.base| |c_ULTIMATE.start_main_~user~0#1.base|) .cse4))) (and (forall ((v_ArrVal_10111 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_10106 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_10107 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_10108 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_10109 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse0 (select (select (let ((.cse3 (store |c_#memory_$Pointer$#4.base| .cse1 v_ArrVal_10107))) (let ((.cse2 (select (select .cse3 |c_ULTIMATE.start_main_~user~0#1.base|) .cse4))) (store (store (store |c_#memory_$Pointer$#4.offset| .cse1 v_ArrVal_10106) .cse2 v_ArrVal_10109) (select (select (store .cse3 .cse2 v_ArrVal_10108) |c_ULTIMATE.start_main_~user~0#1.base|) .cse4) v_ArrVal_10111))) |c_ULTIMATE.start_main_~user~0#1.base|) .cse4))) (bvule (bvadd (_ bv20 32) .cse0) (bvadd .cse0 (_ bv24 32))))) (forall ((v_ArrVal_10110 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_10111 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_10106 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_10107 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_10108 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_10109 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse8 (store |c_#memory_$Pointer$#4.base| .cse1 v_ArrVal_10107))) (let ((.cse5 (select (select .cse8 |c_ULTIMATE.start_main_~user~0#1.base|) .cse4))) (let ((.cse7 (store .cse8 .cse5 v_ArrVal_10108))) (let ((.cse6 (select (select .cse7 |c_ULTIMATE.start_main_~user~0#1.base|) .cse4))) (bvule (bvadd (select (select (store (store (store |c_#memory_$Pointer$#4.offset| .cse1 v_ArrVal_10106) .cse5 v_ArrVal_10109) .cse6 v_ArrVal_10111) |c_ULTIMATE.start_main_~user~0#1.base|) .cse4) (_ bv24 32)) (select |c_#length| (select (select (store .cse7 .cse6 v_ArrVal_10110) |c_ULTIMATE.start_main_~user~0#1.base|) .cse4))))))))))) is different from false [2023-11-29 05:09:54,645 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse3 (bvadd (_ bv8 32) |c_ULTIMATE.start_main_~user~0#1.offset|))) (and (forall ((v_ArrVal_10110 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_10202 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_10111 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_10106 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_10107 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_10203 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_10108 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_10109 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse6 (store |c_#memory_$Pointer$#4.base| |c_ULTIMATE.start_main_#t~mem73#1.base| v_ArrVal_10203))) (let ((.cse0 (select (select .cse6 |c_ULTIMATE.start_main_~user~0#1.base|) .cse3))) (let ((.cse5 (store .cse6 .cse0 v_ArrVal_10107))) (let ((.cse1 (select (select .cse5 |c_ULTIMATE.start_main_~user~0#1.base|) .cse3))) (let ((.cse4 (store .cse5 .cse1 v_ArrVal_10108))) (let ((.cse2 (select (select .cse4 |c_ULTIMATE.start_main_~user~0#1.base|) .cse3))) (bvule (bvadd (select (select (store (store (store (store |c_#memory_$Pointer$#4.offset| |c_ULTIMATE.start_main_#t~mem73#1.base| v_ArrVal_10202) .cse0 v_ArrVal_10106) .cse1 v_ArrVal_10109) .cse2 v_ArrVal_10111) |c_ULTIMATE.start_main_~user~0#1.base|) .cse3) (_ bv24 32)) (select |c_#length| (select (select (store .cse4 .cse2 v_ArrVal_10110) |c_ULTIMATE.start_main_~user~0#1.base|) .cse3)))))))))) (forall ((v_ArrVal_10202 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_10111 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_10106 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_10107 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_10203 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_10108 (Array (_ BitVec 32) (_ BitVec 32))) (v_ArrVal_10109 (Array (_ BitVec 32) (_ BitVec 32)))) (let ((.cse7 (select (select (let ((.cse11 (store |c_#memory_$Pointer$#4.base| |c_ULTIMATE.start_main_#t~mem73#1.base| v_ArrVal_10203))) (let ((.cse8 (select (select .cse11 |c_ULTIMATE.start_main_~user~0#1.base|) .cse3))) (let ((.cse10 (store .cse11 .cse8 v_ArrVal_10107))) (let ((.cse9 (select (select .cse10 |c_ULTIMATE.start_main_~user~0#1.base|) .cse3))) (store (store (store (store |c_#memory_$Pointer$#4.offset| |c_ULTIMATE.start_main_#t~mem73#1.base| v_ArrVal_10202) .cse8 v_ArrVal_10106) .cse9 v_ArrVal_10109) (select (select (store .cse10 .cse9 v_ArrVal_10108) |c_ULTIMATE.start_main_~user~0#1.base|) .cse3) v_ArrVal_10111))))) |c_ULTIMATE.start_main_~user~0#1.base|) .cse3))) (bvule (bvadd .cse7 (_ bv20 32)) (bvadd .cse7 (_ bv24 32))))))) is different from false [2023-11-29 05:09:54,678 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-29 05:09:54,678 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [205363530] [2023-11-29 05:09:54,678 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [205363530] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 05:09:54,678 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1254471851] [2023-11-29 05:09:54,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 05:09:54,678 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-11-29 05:09:54,678 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b425b1b8-e56b-4a99-86a6-15bfbfde3f34/bin/uautomizer-verify-BQ2R08f2Ya/cvc4 [2023-11-29 05:09:54,679 INFO L229 MonitoredProcess]: Starting monitored process 43 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b425b1b8-e56b-4a99-86a6-15bfbfde3f34/bin/uautomizer-verify-BQ2R08f2Ya/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-11-29 05:09:54,681 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b425b1b8-e56b-4a99-86a6-15bfbfde3f34/bin/uautomizer-verify-BQ2R08f2Ya/cvc4 --incremental --print-success --lang smt (43)] Waiting until timeout for monitored process