./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/ldv-memsafety/memleaks_test17_1-2.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_4a59a5fc-9acf-4763-9661-1569bb12e28f/bin/uautomizer-verify-NlZe1sFDwI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a59a5fc-9acf-4763-9661-1569bb12e28f/bin/uautomizer-verify-NlZe1sFDwI/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a59a5fc-9acf-4763-9661-1569bb12e28f/bin/uautomizer-verify-NlZe1sFDwI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a59a5fc-9acf-4763-9661-1569bb12e28f/bin/uautomizer-verify-NlZe1sFDwI/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/ldv-memsafety/memleaks_test17_1-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a59a5fc-9acf-4763-9661-1569bb12e28f/bin/uautomizer-verify-NlZe1sFDwI/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a59a5fc-9acf-4763-9661-1569bb12e28f/bin/uautomizer-verify-NlZe1sFDwI --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 50151fd5b174ebc91ead294b24e8609853135da34cf3135980023271fd7c21f6 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-24 22:04:00,502 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-24 22:04:00,605 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a59a5fc-9acf-4763-9661-1569bb12e28f/bin/uautomizer-verify-NlZe1sFDwI/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2023-11-24 22:04:00,610 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-24 22:04:00,611 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-24 22:04:00,656 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-24 22:04:00,657 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-24 22:04:00,657 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-24 22:04:00,658 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-24 22:04:00,659 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-24 22:04:00,659 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-24 22:04:00,660 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-24 22:04:00,661 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-24 22:04:00,663 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-24 22:04:00,664 INFO L153 SettingsManager]: * Use SBE=true [2023-11-24 22:04:00,665 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-24 22:04:00,666 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-24 22:04:00,670 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-24 22:04:00,671 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-24 22:04:00,671 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-24 22:04:00,673 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-24 22:04:00,673 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-24 22:04:00,674 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-24 22:04:00,674 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-24 22:04:00,674 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-24 22:04:00,675 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-24 22:04:00,675 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-24 22:04:00,675 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-24 22:04:00,676 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-24 22:04:00,677 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-24 22:04:00,678 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-24 22:04:00,678 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-24 22:04:00,679 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-24 22:04:00,679 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-24 22:04:00,679 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-24 22:04:00,679 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-24 22:04:00,680 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-24 22:04:00,680 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-24 22:04:00,680 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-24 22:04:00,680 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-24 22:04:00,680 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-24 22:04:00,681 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_4a59a5fc-9acf-4763-9661-1569bb12e28f/bin/uautomizer-verify-NlZe1sFDwI/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a59a5fc-9acf-4763-9661-1569bb12e28f/bin/uautomizer-verify-NlZe1sFDwI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 50151fd5b174ebc91ead294b24e8609853135da34cf3135980023271fd7c21f6 [2023-11-24 22:04:01,004 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-24 22:04:01,034 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-24 22:04:01,036 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-24 22:04:01,038 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-24 22:04:01,038 INFO L274 PluginConnector]: CDTParser initialized [2023-11-24 22:04:01,040 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a59a5fc-9acf-4763-9661-1569bb12e28f/bin/uautomizer-verify-NlZe1sFDwI/../../sv-benchmarks/c/ldv-memsafety/memleaks_test17_1-2.i [2023-11-24 22:04:04,241 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-24 22:04:04,579 INFO L384 CDTParser]: Found 1 translation units. [2023-11-24 22:04:04,579 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a59a5fc-9acf-4763-9661-1569bb12e28f/sv-benchmarks/c/ldv-memsafety/memleaks_test17_1-2.i [2023-11-24 22:04:04,601 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a59a5fc-9acf-4763-9661-1569bb12e28f/bin/uautomizer-verify-NlZe1sFDwI/data/737f9f256/fff86958226a44f9a492089129e2d5b8/FLAGe7bd439fa [2023-11-24 22:04:04,618 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a59a5fc-9acf-4763-9661-1569bb12e28f/bin/uautomizer-verify-NlZe1sFDwI/data/737f9f256/fff86958226a44f9a492089129e2d5b8 [2023-11-24 22:04:04,620 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-24 22:04:04,625 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-24 22:04:04,628 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-24 22:04:04,630 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-24 22:04:04,636 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-24 22:04:04,636 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 10:04:04" (1/1) ... [2023-11-24 22:04:04,638 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@65260822 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 10:04:04, skipping insertion in model container [2023-11-24 22:04:04,638 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 10:04:04" (1/1) ... [2023-11-24 22:04:04,705 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-24 22:04:05,234 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-24 22:04:05,267 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) [2023-11-24 22:04:05,267 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@1ae2f752 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 10:04:05, skipping insertion in model container [2023-11-24 22:04:05,268 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-24 22:04:05,268 INFO L186 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2023-11-24 22:04:05,270 INFO L158 Benchmark]: Toolchain (without parser) took 644.43ms. Allocated memory is still 161.5MB. Free memory was 123.0MB in the beginning and 108.7MB in the end (delta: 14.3MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2023-11-24 22:04:05,271 INFO L158 Benchmark]: CDTParser took 0.25ms. Allocated memory is still 113.2MB. Free memory is still 63.4MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-24 22:04:05,272 INFO L158 Benchmark]: CACSL2BoogieTranslator took 639.71ms. Allocated memory is still 161.5MB. Free memory was 122.6MB in the beginning and 108.7MB in the end (delta: 13.9MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2023-11-24 22:04:05,274 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25ms. Allocated memory is still 113.2MB. Free memory is still 63.4MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 639.71ms. Allocated memory is still 161.5MB. Free memory was 122.6MB in the beginning and 108.7MB in the end (delta: 13.9MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 576]: 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_4a59a5fc-9acf-4763-9661-1569bb12e28f/bin/uautomizer-verify-NlZe1sFDwI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a59a5fc-9acf-4763-9661-1569bb12e28f/bin/uautomizer-verify-NlZe1sFDwI/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a59a5fc-9acf-4763-9661-1569bb12e28f/bin/uautomizer-verify-NlZe1sFDwI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a59a5fc-9acf-4763-9661-1569bb12e28f/bin/uautomizer-verify-NlZe1sFDwI/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/ldv-memsafety/memleaks_test17_1-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a59a5fc-9acf-4763-9661-1569bb12e28f/bin/uautomizer-verify-NlZe1sFDwI/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a59a5fc-9acf-4763-9661-1569bb12e28f/bin/uautomizer-verify-NlZe1sFDwI --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 50151fd5b174ebc91ead294b24e8609853135da34cf3135980023271fd7c21f6 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-24 22:04:07,814 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-24 22:04:07,972 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a59a5fc-9acf-4763-9661-1569bb12e28f/bin/uautomizer-verify-NlZe1sFDwI/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2023-11-24 22:04:07,982 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-24 22:04:07,983 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-24 22:04:08,035 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-24 22:04:08,036 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-24 22:04:08,037 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-24 22:04:08,038 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-24 22:04:08,044 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-24 22:04:08,045 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-24 22:04:08,045 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-24 22:04:08,046 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-24 22:04:08,048 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-24 22:04:08,049 INFO L153 SettingsManager]: * Use SBE=true [2023-11-24 22:04:08,049 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-24 22:04:08,050 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-24 22:04:08,050 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-24 22:04:08,051 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-24 22:04:08,052 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-24 22:04:08,053 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-24 22:04:08,053 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-24 22:04:08,054 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-24 22:04:08,054 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-24 22:04:08,055 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-24 22:04:08,055 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-11-24 22:04:08,056 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-11-24 22:04:08,056 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-24 22:04:08,057 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-24 22:04:08,057 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-24 22:04:08,059 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-24 22:04:08,060 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-24 22:04:08,060 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-24 22:04:08,060 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-24 22:04:08,061 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-24 22:04:08,061 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-24 22:04:08,062 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-24 22:04:08,062 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2023-11-24 22:04:08,063 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-11-24 22:04:08,063 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-24 22:04:08,063 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-24 22:04:08,064 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-24 22:04:08,064 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-24 22:04:08,064 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2023-11-24 22:04:08,065 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_4a59a5fc-9acf-4763-9661-1569bb12e28f/bin/uautomizer-verify-NlZe1sFDwI/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a59a5fc-9acf-4763-9661-1569bb12e28f/bin/uautomizer-verify-NlZe1sFDwI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 50151fd5b174ebc91ead294b24e8609853135da34cf3135980023271fd7c21f6 [2023-11-24 22:04:08,494 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-24 22:04:08,529 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-24 22:04:08,532 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-24 22:04:08,533 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-24 22:04:08,533 INFO L274 PluginConnector]: CDTParser initialized [2023-11-24 22:04:08,535 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a59a5fc-9acf-4763-9661-1569bb12e28f/bin/uautomizer-verify-NlZe1sFDwI/../../sv-benchmarks/c/ldv-memsafety/memleaks_test17_1-2.i [2023-11-24 22:04:11,721 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-24 22:04:12,078 INFO L384 CDTParser]: Found 1 translation units. [2023-11-24 22:04:12,078 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a59a5fc-9acf-4763-9661-1569bb12e28f/sv-benchmarks/c/ldv-memsafety/memleaks_test17_1-2.i [2023-11-24 22:04:12,097 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a59a5fc-9acf-4763-9661-1569bb12e28f/bin/uautomizer-verify-NlZe1sFDwI/data/1bba174da/0e6ae98b15654ef7b5359d5349528f3e/FLAG517b7497e [2023-11-24 22:04:12,115 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a59a5fc-9acf-4763-9661-1569bb12e28f/bin/uautomizer-verify-NlZe1sFDwI/data/1bba174da/0e6ae98b15654ef7b5359d5349528f3e [2023-11-24 22:04:12,118 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-24 22:04:12,121 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-24 22:04:12,125 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-24 22:04:12,125 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-24 22:04:12,130 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-24 22:04:12,131 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 10:04:12" (1/1) ... [2023-11-24 22:04:12,132 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1eddea72 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 10:04:12, skipping insertion in model container [2023-11-24 22:04:12,133 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 10:04:12" (1/1) ... [2023-11-24 22:04:12,231 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-24 22:04:12,827 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-24 22:04:12,863 INFO L199 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2023-11-24 22:04:12,896 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-24 22:04:13,048 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-24 22:04:13,064 INFO L202 MainTranslator]: Completed pre-run [2023-11-24 22:04:13,159 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-24 22:04:13,219 WARN L675 CHandler]: The function release is called, but not defined or handled by StandardFunctionHandler. [2023-11-24 22:04:13,227 INFO L206 MainTranslator]: Completed translation [2023-11-24 22:04:13,228 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 10:04:13 WrapperNode [2023-11-24 22:04:13,228 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-24 22:04:13,229 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-24 22:04:13,229 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-24 22:04:13,229 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-24 22:04:13,237 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 10:04:13" (1/1) ... [2023-11-24 22:04:13,262 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 10:04:13" (1/1) ... [2023-11-24 22:04:13,287 INFO L138 Inliner]: procedures = 167, calls = 79, calls flagged for inlining = 23, calls inlined = 5, statements flattened = 87 [2023-11-24 22:04:13,287 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-24 22:04:13,288 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-24 22:04:13,289 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-24 22:04:13,289 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-24 22:04:13,301 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 10:04:13" (1/1) ... [2023-11-24 22:04:13,301 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 10:04:13" (1/1) ... [2023-11-24 22:04:13,305 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 10:04:13" (1/1) ... [2023-11-24 22:04:13,323 INFO L175 MemorySlicer]: Split 7 memory accesses to 2 slices as follows [2, 5]. 71 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 3 writes are split as follows [0, 3]. [2023-11-24 22:04:13,323 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 10:04:13" (1/1) ... [2023-11-24 22:04:13,324 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 10:04:13" (1/1) ... [2023-11-24 22:04:13,334 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 10:04:13" (1/1) ... [2023-11-24 22:04:13,337 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 10:04:13" (1/1) ... [2023-11-24 22:04:13,340 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 10:04:13" (1/1) ... [2023-11-24 22:04:13,342 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 10:04:13" (1/1) ... [2023-11-24 22:04:13,345 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-24 22:04:13,346 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-24 22:04:13,347 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-24 22:04:13,347 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-24 22:04:13,348 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 10:04:13" (1/1) ... [2023-11-24 22:04:13,354 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-24 22:04:13,376 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a59a5fc-9acf-4763-9661-1569bb12e28f/bin/uautomizer-verify-NlZe1sFDwI/z3 [2023-11-24 22:04:13,389 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a59a5fc-9acf-4763-9661-1569bb12e28f/bin/uautomizer-verify-NlZe1sFDwI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-24 22:04:13,401 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a59a5fc-9acf-4763-9661-1569bb12e28f/bin/uautomizer-verify-NlZe1sFDwI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-24 22:04:13,423 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2023-11-24 22:04:13,423 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2023-11-24 22:04:13,423 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-24 22:04:13,424 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-24 22:04:13,424 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2023-11-24 22:04:13,424 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2023-11-24 22:04:13,424 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2023-11-24 22:04:13,425 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2023-11-24 22:04:13,425 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-24 22:04:13,425 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#0 [2023-11-24 22:04:13,425 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#1 [2023-11-24 22:04:13,426 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-24 22:04:13,426 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-24 22:04:13,571 INFO L241 CfgBuilder]: Building ICFG [2023-11-24 22:04:13,573 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-24 22:04:13,906 INFO L282 CfgBuilder]: Performing block encoding [2023-11-24 22:04:13,947 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-24 22:04:13,947 INFO L309 CfgBuilder]: Removed 4 assume(true) statements. [2023-11-24 22:04:13,948 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 10:04:13 BoogieIcfgContainer [2023-11-24 22:04:13,948 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-24 22:04:13,950 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-24 22:04:13,950 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-24 22:04:13,954 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-24 22:04:13,954 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.11 10:04:12" (1/3) ... [2023-11-24 22:04:13,955 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@73c15c64 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 10:04:13, skipping insertion in model container [2023-11-24 22:04:13,955 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 10:04:13" (2/3) ... [2023-11-24 22:04:13,956 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@73c15c64 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 10:04:13, skipping insertion in model container [2023-11-24 22:04:13,956 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 10:04:13" (3/3) ... [2023-11-24 22:04:13,957 INFO L112 eAbstractionObserver]: Analyzing ICFG memleaks_test17_1-2.i [2023-11-24 22:04:13,978 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-24 22:04:13,978 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 20 error locations. [2023-11-24 22:04:14,028 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-24 22:04:14,035 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;@ed058be, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-24 22:04:14,035 INFO L358 AbstractCegarLoop]: Starting to check reachability of 20 error locations. [2023-11-24 22:04:14,040 INFO L276 IsEmpty]: Start isEmpty. Operand has 57 states, 33 states have (on average 1.9393939393939394) internal successors, (64), 53 states have internal predecessors, (64), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-24 22:04:14,048 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2023-11-24 22:04:14,048 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 22:04:14,049 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 22:04:14,050 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr19ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2023-11-24 22:04:14,057 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 22:04:14,058 INFO L85 PathProgramCache]: Analyzing trace with hash -316867076, now seen corresponding path program 1 times [2023-11-24 22:04:14,075 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-24 22:04:14,076 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2023511362] [2023-11-24 22:04:14,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 22:04:14,077 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 [2023-11-24 22:04:14,077 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a59a5fc-9acf-4763-9661-1569bb12e28f/bin/uautomizer-verify-NlZe1sFDwI/mathsat [2023-11-24 22:04:14,083 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a59a5fc-9acf-4763-9661-1569bb12e28f/bin/uautomizer-verify-NlZe1sFDwI/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) [2023-11-24 22:04:14,126 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a59a5fc-9acf-4763-9661-1569bb12e28f/bin/uautomizer-verify-NlZe1sFDwI/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 [2023-11-24 22:04:14,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 22:04:14,236 INFO L262 TraceCheckSpWp]: Trace formula consists of 39 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-24 22:04:14,243 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 22:04:14,326 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 22:04:14,326 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-24 22:04:14,327 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-24 22:04:14,328 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2023511362] [2023-11-24 22:04:14,328 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2023511362] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 22:04:14,329 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 22:04:14,329 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-24 22:04:14,331 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1342842055] [2023-11-24 22:04:14,332 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 22:04:14,336 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-24 22:04:14,337 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-24 22:04:14,368 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-24 22:04:14,369 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-24 22:04:14,372 INFO L87 Difference]: Start difference. First operand has 57 states, 33 states have (on average 1.9393939393939394) internal successors, (64), 53 states have internal predecessors, (64), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 5 states, 5 states have (on average 1.6) internal successors, (8), 4 states have internal predecessors, (8), 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) [2023-11-24 22:04:14,587 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 22:04:14,587 INFO L93 Difference]: Finished difference Result 106 states and 122 transitions. [2023-11-24 22:04:14,589 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-24 22:04:14,591 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 1.6) internal successors, (8), 4 states have internal predecessors, (8), 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 10 [2023-11-24 22:04:14,591 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 22:04:14,600 INFO L225 Difference]: With dead ends: 106 [2023-11-24 22:04:14,600 INFO L226 Difference]: Without dead ends: 105 [2023-11-24 22:04:14,602 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-24 22:04:14,606 INFO L413 NwaCegarLoop]: 48 mSDtfsCounter, 50 mSDsluCounter, 137 mSDsCounter, 0 mSdLazyCounter, 73 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 52 SdHoareTripleChecker+Valid, 185 SdHoareTripleChecker+Invalid, 74 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 73 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-24 22:04:14,607 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [52 Valid, 185 Invalid, 74 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 73 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-24 22:04:14,649 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2023-11-24 22:04:14,671 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 60. [2023-11-24 22:04:14,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60 states, 36 states have (on average 1.7222222222222223) internal successors, (62), 55 states have internal predecessors, (62), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2023-11-24 22:04:14,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 68 transitions. [2023-11-24 22:04:14,676 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 68 transitions. Word has length 10 [2023-11-24 22:04:14,677 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 22:04:14,677 INFO L495 AbstractCegarLoop]: Abstraction has 60 states and 68 transitions. [2023-11-24 22:04:14,677 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 1.6) internal successors, (8), 4 states have internal predecessors, (8), 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) [2023-11-24 22:04:14,678 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 68 transitions. [2023-11-24 22:04:14,679 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2023-11-24 22:04:14,679 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 22:04:14,679 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 22:04:14,691 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a59a5fc-9acf-4763-9661-1569bb12e28f/bin/uautomizer-verify-NlZe1sFDwI/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 [2023-11-24 22:04:14,881 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a59a5fc-9acf-4763-9661-1569bb12e28f/bin/uautomizer-verify-NlZe1sFDwI/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 [2023-11-24 22:04:14,882 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2023-11-24 22:04:14,885 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 22:04:14,886 INFO L85 PathProgramCache]: Analyzing trace with hash -316968170, now seen corresponding path program 1 times [2023-11-24 22:04:14,890 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-24 22:04:14,891 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [881304602] [2023-11-24 22:04:14,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 22:04:14,898 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 [2023-11-24 22:04:14,899 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a59a5fc-9acf-4763-9661-1569bb12e28f/bin/uautomizer-verify-NlZe1sFDwI/mathsat [2023-11-24 22:04:14,901 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a59a5fc-9acf-4763-9661-1569bb12e28f/bin/uautomizer-verify-NlZe1sFDwI/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) [2023-11-24 22:04:14,929 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a59a5fc-9acf-4763-9661-1569bb12e28f/bin/uautomizer-verify-NlZe1sFDwI/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 [2023-11-24 22:04:15,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 22:04:15,002 INFO L262 TraceCheckSpWp]: Trace formula consists of 39 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-24 22:04:15,005 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 22:04:15,056 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 [2023-11-24 22:04:15,150 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 22:04:15,150 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-24 22:04:15,151 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-24 22:04:15,151 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [881304602] [2023-11-24 22:04:15,151 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [881304602] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 22:04:15,152 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 22:04:15,152 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-24 22:04:15,153 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1816791401] [2023-11-24 22:04:15,153 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 22:04:15,154 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-24 22:04:15,155 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-24 22:04:15,156 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-24 22:04:15,157 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-24 22:04:15,157 INFO L87 Difference]: Start difference. First operand 60 states and 68 transitions. Second operand has 5 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 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) [2023-11-24 22:04:15,405 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 22:04:15,405 INFO L93 Difference]: Finished difference Result 84 states and 97 transitions. [2023-11-24 22:04:15,405 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-24 22:04:15,406 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 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 10 [2023-11-24 22:04:15,406 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 22:04:15,407 INFO L225 Difference]: With dead ends: 84 [2023-11-24 22:04:15,408 INFO L226 Difference]: Without dead ends: 84 [2023-11-24 22:04:15,408 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-24 22:04:15,410 INFO L413 NwaCegarLoop]: 46 mSDtfsCounter, 23 mSDsluCounter, 96 mSDsCounter, 0 mSdLazyCounter, 108 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 142 SdHoareTripleChecker+Invalid, 110 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 108 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-24 22:04:15,410 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 142 Invalid, 110 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 108 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-24 22:04:15,411 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2023-11-24 22:04:15,418 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 71. [2023-11-24 22:04:15,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71 states, 47 states have (on average 1.6808510638297873) internal successors, (79), 66 states have internal predecessors, (79), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2023-11-24 22:04:15,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 85 transitions. [2023-11-24 22:04:15,420 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 85 transitions. Word has length 10 [2023-11-24 22:04:15,421 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 22:04:15,421 INFO L495 AbstractCegarLoop]: Abstraction has 71 states and 85 transitions. [2023-11-24 22:04:15,421 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 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) [2023-11-24 22:04:15,421 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 85 transitions. [2023-11-24 22:04:15,422 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2023-11-24 22:04:15,422 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 22:04:15,422 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 22:04:15,432 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a59a5fc-9acf-4763-9661-1569bb12e28f/bin/uautomizer-verify-NlZe1sFDwI/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2023-11-24 22:04:15,626 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a59a5fc-9acf-4763-9661-1569bb12e28f/bin/uautomizer-verify-NlZe1sFDwI/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 [2023-11-24 22:04:15,627 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2023-11-24 22:04:15,627 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 22:04:15,628 INFO L85 PathProgramCache]: Analyzing trace with hash -316968169, now seen corresponding path program 1 times [2023-11-24 22:04:15,628 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-24 22:04:15,628 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1306528127] [2023-11-24 22:04:15,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 22:04:15,629 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 [2023-11-24 22:04:15,629 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a59a5fc-9acf-4763-9661-1569bb12e28f/bin/uautomizer-verify-NlZe1sFDwI/mathsat [2023-11-24 22:04:15,630 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a59a5fc-9acf-4763-9661-1569bb12e28f/bin/uautomizer-verify-NlZe1sFDwI/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) [2023-11-24 22:04:15,657 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a59a5fc-9acf-4763-9661-1569bb12e28f/bin/uautomizer-verify-NlZe1sFDwI/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 [2023-11-24 22:04:15,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 22:04:15,701 INFO L262 TraceCheckSpWp]: Trace formula consists of 39 conjuncts, 12 conjunts are in the unsatisfiable core [2023-11-24 22:04:15,707 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 22:04:15,746 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 [2023-11-24 22:04:15,918 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 22:04:15,918 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-24 22:04:15,919 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-24 22:04:15,919 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1306528127] [2023-11-24 22:04:15,919 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1306528127] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 22:04:15,920 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 22:04:15,920 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-24 22:04:15,930 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [608682453] [2023-11-24 22:04:15,931 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 22:04:15,931 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-24 22:04:15,932 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-24 22:04:15,933 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-24 22:04:15,933 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2023-11-24 22:04:15,933 INFO L87 Difference]: Start difference. First operand 71 states and 85 transitions. Second operand has 8 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 6 states have internal predecessors, (8), 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) [2023-11-24 22:04:16,428 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 22:04:16,428 INFO L93 Difference]: Finished difference Result 103 states and 124 transitions. [2023-11-24 22:04:16,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-24 22:04:16,429 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 6 states have internal predecessors, (8), 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 10 [2023-11-24 22:04:16,430 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 22:04:16,431 INFO L225 Difference]: With dead ends: 103 [2023-11-24 22:04:16,431 INFO L226 Difference]: Without dead ends: 103 [2023-11-24 22:04:16,432 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2023-11-24 22:04:16,433 INFO L413 NwaCegarLoop]: 62 mSDtfsCounter, 87 mSDsluCounter, 209 mSDsCounter, 0 mSdLazyCounter, 187 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 91 SdHoareTripleChecker+Valid, 271 SdHoareTripleChecker+Invalid, 189 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 187 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-24 22:04:16,434 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [91 Valid, 271 Invalid, 189 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 187 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-24 22:04:16,435 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2023-11-24 22:04:16,448 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 89. [2023-11-24 22:04:16,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 89 states, 65 states have (on average 1.646153846153846) internal successors, (107), 84 states have internal predecessors, (107), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2023-11-24 22:04:16,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 113 transitions. [2023-11-24 22:04:16,451 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 113 transitions. Word has length 10 [2023-11-24 22:04:16,451 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 22:04:16,451 INFO L495 AbstractCegarLoop]: Abstraction has 89 states and 113 transitions. [2023-11-24 22:04:16,452 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 6 states have internal predecessors, (8), 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) [2023-11-24 22:04:16,452 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 113 transitions. [2023-11-24 22:04:16,452 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2023-11-24 22:04:16,452 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 22:04:16,453 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 22:04:16,458 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a59a5fc-9acf-4763-9661-1569bb12e28f/bin/uautomizer-verify-NlZe1sFDwI/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)] Forceful destruction successful, exit code 0 [2023-11-24 22:04:16,653 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a59a5fc-9acf-4763-9661-1569bb12e28f/bin/uautomizer-verify-NlZe1sFDwI/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 [2023-11-24 22:04:16,654 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr19ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2023-11-24 22:04:16,654 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 22:04:16,654 INFO L85 PathProgramCache]: Analyzing trace with hash 570636605, now seen corresponding path program 1 times [2023-11-24 22:04:16,655 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-24 22:04:16,655 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1029729201] [2023-11-24 22:04:16,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 22:04:16,656 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 [2023-11-24 22:04:16,656 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a59a5fc-9acf-4763-9661-1569bb12e28f/bin/uautomizer-verify-NlZe1sFDwI/mathsat [2023-11-24 22:04:16,657 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a59a5fc-9acf-4763-9661-1569bb12e28f/bin/uautomizer-verify-NlZe1sFDwI/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) [2023-11-24 22:04:16,659 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a59a5fc-9acf-4763-9661-1569bb12e28f/bin/uautomizer-verify-NlZe1sFDwI/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 [2023-11-24 22:04:16,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 22:04:16,707 INFO L262 TraceCheckSpWp]: Trace formula consists of 33 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-24 22:04:16,708 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 22:04:16,734 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 22:04:16,734 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-24 22:04:16,734 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-24 22:04:16,735 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1029729201] [2023-11-24 22:04:16,735 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1029729201] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 22:04:16,735 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 22:04:16,735 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-24 22:04:16,736 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [911200077] [2023-11-24 22:04:16,736 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 22:04:16,736 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-24 22:04:16,736 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-24 22:04:16,737 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-24 22:04:16,737 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-24 22:04:16,738 INFO L87 Difference]: Start difference. First operand 89 states and 113 transitions. Second operand has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 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) [2023-11-24 22:04:16,888 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 22:04:16,888 INFO L93 Difference]: Finished difference Result 131 states and 160 transitions. [2023-11-24 22:04:16,889 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-24 22:04:16,889 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 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 10 [2023-11-24 22:04:16,890 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 22:04:16,891 INFO L225 Difference]: With dead ends: 131 [2023-11-24 22:04:16,892 INFO L226 Difference]: Without dead ends: 129 [2023-11-24 22:04:16,892 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-24 22:04:16,893 INFO L413 NwaCegarLoop]: 65 mSDtfsCounter, 44 mSDsluCounter, 92 mSDsCounter, 0 mSdLazyCounter, 77 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 157 SdHoareTripleChecker+Invalid, 80 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 77 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-24 22:04:16,894 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [44 Valid, 157 Invalid, 80 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 77 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-24 22:04:16,895 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129 states. [2023-11-24 22:04:16,902 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129 to 89. [2023-11-24 22:04:16,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 89 states, 65 states have (on average 1.6307692307692307) internal successors, (106), 84 states have internal predecessors, (106), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2023-11-24 22:04:16,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 112 transitions. [2023-11-24 22:04:16,904 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 112 transitions. Word has length 10 [2023-11-24 22:04:16,905 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 22:04:16,905 INFO L495 AbstractCegarLoop]: Abstraction has 89 states and 112 transitions. [2023-11-24 22:04:16,905 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 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) [2023-11-24 22:04:16,905 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 112 transitions. [2023-11-24 22:04:16,906 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2023-11-24 22:04:16,906 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 22:04:16,906 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 22:04:16,918 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a59a5fc-9acf-4763-9661-1569bb12e28f/bin/uautomizer-verify-NlZe1sFDwI/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 [2023-11-24 22:04:17,108 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a59a5fc-9acf-4763-9661-1569bb12e28f/bin/uautomizer-verify-NlZe1sFDwI/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 [2023-11-24 22:04:17,109 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2023-11-24 22:04:17,109 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 22:04:17,109 INFO L85 PathProgramCache]: Analyzing trace with hash 570535511, now seen corresponding path program 1 times [2023-11-24 22:04:17,110 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-24 22:04:17,110 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [116824294] [2023-11-24 22:04:17,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 22:04:17,110 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 [2023-11-24 22:04:17,111 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a59a5fc-9acf-4763-9661-1569bb12e28f/bin/uautomizer-verify-NlZe1sFDwI/mathsat [2023-11-24 22:04:17,112 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a59a5fc-9acf-4763-9661-1569bb12e28f/bin/uautomizer-verify-NlZe1sFDwI/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) [2023-11-24 22:04:17,114 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a59a5fc-9acf-4763-9661-1569bb12e28f/bin/uautomizer-verify-NlZe1sFDwI/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 [2023-11-24 22:04:17,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 22:04:17,160 INFO L262 TraceCheckSpWp]: Trace formula consists of 33 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-24 22:04:17,162 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 22:04:17,241 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 22:04:17,241 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-24 22:04:17,241 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-24 22:04:17,242 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [116824294] [2023-11-24 22:04:17,242 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [116824294] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 22:04:17,243 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 22:04:17,244 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-24 22:04:17,244 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [314773588] [2023-11-24 22:04:17,244 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 22:04:17,245 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-24 22:04:17,245 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-24 22:04:17,245 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-24 22:04:17,246 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-24 22:04:17,246 INFO L87 Difference]: Start difference. First operand 89 states and 112 transitions. Second operand has 5 states, 5 states have (on average 1.6) internal successors, (8), 4 states have internal predecessors, (8), 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) [2023-11-24 22:04:17,351 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 22:04:17,351 INFO L93 Difference]: Finished difference Result 76 states and 91 transitions. [2023-11-24 22:04:17,354 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-24 22:04:17,354 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 1.6) internal successors, (8), 4 states have internal predecessors, (8), 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 10 [2023-11-24 22:04:17,355 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 22:04:17,355 INFO L225 Difference]: With dead ends: 76 [2023-11-24 22:04:17,355 INFO L226 Difference]: Without dead ends: 74 [2023-11-24 22:04:17,356 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-24 22:04:17,357 INFO L413 NwaCegarLoop]: 58 mSDtfsCounter, 0 mSDsluCounter, 156 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 214 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-24 22:04:17,357 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 214 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-24 22:04:17,358 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2023-11-24 22:04:17,366 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 74. [2023-11-24 22:04:17,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74 states, 51 states have (on average 1.6470588235294117) internal successors, (84), 70 states have internal predecessors, (84), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-11-24 22:04:17,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 89 transitions. [2023-11-24 22:04:17,371 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 89 transitions. Word has length 10 [2023-11-24 22:04:17,371 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 22:04:17,372 INFO L495 AbstractCegarLoop]: Abstraction has 74 states and 89 transitions. [2023-11-24 22:04:17,372 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 1.6) internal successors, (8), 4 states have internal predecessors, (8), 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) [2023-11-24 22:04:17,373 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 89 transitions. [2023-11-24 22:04:17,374 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2023-11-24 22:04:17,374 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 22:04:17,374 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 22:04:17,378 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a59a5fc-9acf-4763-9661-1569bb12e28f/bin/uautomizer-verify-NlZe1sFDwI/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)] Forceful destruction successful, exit code 0 [2023-11-24 22:04:17,575 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a59a5fc-9acf-4763-9661-1569bb12e28f/bin/uautomizer-verify-NlZe1sFDwI/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 [2023-11-24 22:04:17,575 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2023-11-24 22:04:17,576 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 22:04:17,576 INFO L85 PathProgramCache]: Analyzing trace with hash 336368226, now seen corresponding path program 1 times [2023-11-24 22:04:17,576 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-24 22:04:17,577 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [137534840] [2023-11-24 22:04:17,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 22:04:17,577 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 [2023-11-24 22:04:17,577 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a59a5fc-9acf-4763-9661-1569bb12e28f/bin/uautomizer-verify-NlZe1sFDwI/mathsat [2023-11-24 22:04:17,578 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a59a5fc-9acf-4763-9661-1569bb12e28f/bin/uautomizer-verify-NlZe1sFDwI/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) [2023-11-24 22:04:17,580 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a59a5fc-9acf-4763-9661-1569bb12e28f/bin/uautomizer-verify-NlZe1sFDwI/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 [2023-11-24 22:04:17,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 22:04:17,667 INFO L262 TraceCheckSpWp]: Trace formula consists of 54 conjuncts, 13 conjunts are in the unsatisfiable core [2023-11-24 22:04:17,669 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 22:04:17,691 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 [2023-11-24 22:04:17,894 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 22:04:17,894 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-24 22:04:18,767 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 22:04:18,767 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-24 22:04:18,768 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [137534840] [2023-11-24 22:04:18,768 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [137534840] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-24 22:04:18,768 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-24 22:04:18,768 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2023-11-24 22:04:18,768 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [830295356] [2023-11-24 22:04:18,769 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-24 22:04:18,769 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-11-24 22:04:18,769 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-24 22:04:18,770 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-11-24 22:04:18,770 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=198, Unknown=0, NotChecked=0, Total=240 [2023-11-24 22:04:18,771 INFO L87 Difference]: Start difference. First operand 74 states and 89 transitions. Second operand has 16 states, 13 states have (on average 1.5384615384615385) internal successors, (20), 13 states have internal predecessors, (20), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-24 22:04:20,520 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 22:04:20,520 INFO L93 Difference]: Finished difference Result 147 states and 174 transitions. [2023-11-24 22:04:20,521 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-11-24 22:04:20,521 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 13 states have (on average 1.5384615384615385) internal successors, (20), 13 states have internal predecessors, (20), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 12 [2023-11-24 22:04:20,521 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 22:04:20,523 INFO L225 Difference]: With dead ends: 147 [2023-11-24 22:04:20,523 INFO L226 Difference]: Without dead ends: 147 [2023-11-24 22:04:20,523 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 73 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=114, Invalid=486, Unknown=0, NotChecked=0, Total=600 [2023-11-24 22:04:20,525 INFO L413 NwaCegarLoop]: 39 mSDtfsCounter, 401 mSDsluCounter, 341 mSDsCounter, 0 mSdLazyCounter, 340 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 404 SdHoareTripleChecker+Valid, 380 SdHoareTripleChecker+Invalid, 361 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 340 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-11-24 22:04:20,525 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [404 Valid, 380 Invalid, 361 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 340 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-11-24 22:04:20,526 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147 states. [2023-11-24 22:04:20,533 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147 to 80. [2023-11-24 22:04:20,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 80 states, 57 states have (on average 1.6140350877192982) internal successors, (92), 76 states have internal predecessors, (92), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-11-24 22:04:20,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 97 transitions. [2023-11-24 22:04:20,535 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 97 transitions. Word has length 12 [2023-11-24 22:04:20,535 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 22:04:20,535 INFO L495 AbstractCegarLoop]: Abstraction has 80 states and 97 transitions. [2023-11-24 22:04:20,536 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 13 states have (on average 1.5384615384615385) internal successors, (20), 13 states have internal predecessors, (20), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-24 22:04:20,536 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 97 transitions. [2023-11-24 22:04:20,537 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2023-11-24 22:04:20,537 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 22:04:20,537 INFO L195 NwaCegarLoop]: trace histogram [5, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 22:04:20,547 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a59a5fc-9acf-4763-9661-1569bb12e28f/bin/uautomizer-verify-NlZe1sFDwI/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)] Forceful destruction successful, exit code 0 [2023-11-24 22:04:20,739 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a59a5fc-9acf-4763-9661-1569bb12e28f/bin/uautomizer-verify-NlZe1sFDwI/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 [2023-11-24 22:04:20,739 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2023-11-24 22:04:20,740 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 22:04:20,740 INFO L85 PathProgramCache]: Analyzing trace with hash 292472771, now seen corresponding path program 2 times [2023-11-24 22:04:20,740 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-24 22:04:20,740 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [574386089] [2023-11-24 22:04:20,741 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-24 22:04:20,741 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 [2023-11-24 22:04:20,741 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a59a5fc-9acf-4763-9661-1569bb12e28f/bin/uautomizer-verify-NlZe1sFDwI/mathsat [2023-11-24 22:04:20,742 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a59a5fc-9acf-4763-9661-1569bb12e28f/bin/uautomizer-verify-NlZe1sFDwI/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) [2023-11-24 22:04:20,743 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a59a5fc-9acf-4763-9661-1569bb12e28f/bin/uautomizer-verify-NlZe1sFDwI/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 [2023-11-24 22:04:20,844 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-24 22:04:20,844 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-24 22:04:20,848 INFO L262 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 17 conjunts are in the unsatisfiable core [2023-11-24 22:04:20,854 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 22:04:20,881 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 [2023-11-24 22:04:21,331 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 22:04:21,331 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-24 22:04:23,393 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 22:04:23,393 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-24 22:04:23,393 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [574386089] [2023-11-24 22:04:23,393 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [574386089] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-24 22:04:23,394 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-24 22:04:23,394 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 23 [2023-11-24 22:04:23,394 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1677402847] [2023-11-24 22:04:23,394 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-24 22:04:23,395 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2023-11-24 22:04:23,395 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-24 22:04:23,396 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2023-11-24 22:04:23,396 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=113, Invalid=439, Unknown=0, NotChecked=0, Total=552 [2023-11-24 22:04:23,397 INFO L87 Difference]: Start difference. First operand 80 states and 97 transitions. Second operand has 24 states, 21 states have (on average 1.5238095238095237) internal successors, (32), 21 states have internal predecessors, (32), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-24 22:04:27,977 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 22:04:27,977 INFO L93 Difference]: Finished difference Result 132 states and 156 transitions. [2023-11-24 22:04:27,977 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-11-24 22:04:27,978 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 21 states have (on average 1.5238095238095237) internal successors, (32), 21 states have internal predecessors, (32), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 18 [2023-11-24 22:04:27,978 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 22:04:27,979 INFO L225 Difference]: With dead ends: 132 [2023-11-24 22:04:27,979 INFO L226 Difference]: Without dead ends: 132 [2023-11-24 22:04:27,980 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 239 ImplicationChecksByTransitivity, 4.2s TimeCoverageRelationStatistics Valid=311, Invalid=1021, Unknown=0, NotChecked=0, Total=1332 [2023-11-24 22:04:27,982 INFO L413 NwaCegarLoop]: 39 mSDtfsCounter, 478 mSDsluCounter, 470 mSDsCounter, 0 mSdLazyCounter, 534 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 480 SdHoareTripleChecker+Valid, 509 SdHoareTripleChecker+Invalid, 570 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 534 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2023-11-24 22:04:27,982 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [480 Valid, 509 Invalid, 570 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 534 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2023-11-24 22:04:27,983 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132 states. [2023-11-24 22:04:27,990 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132 to 92. [2023-11-24 22:04:27,990 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 92 states, 69 states have (on average 1.5507246376811594) internal successors, (107), 88 states have internal predecessors, (107), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-11-24 22:04:27,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 112 transitions. [2023-11-24 22:04:27,992 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 112 transitions. Word has length 18 [2023-11-24 22:04:27,992 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 22:04:27,993 INFO L495 AbstractCegarLoop]: Abstraction has 92 states and 112 transitions. [2023-11-24 22:04:27,993 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 21 states have (on average 1.5238095238095237) internal successors, (32), 21 states have internal predecessors, (32), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-24 22:04:27,993 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 112 transitions. [2023-11-24 22:04:27,994 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2023-11-24 22:04:27,995 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 22:04:27,995 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 22:04:28,005 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a59a5fc-9acf-4763-9661-1569bb12e28f/bin/uautomizer-verify-NlZe1sFDwI/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)] Forceful destruction successful, exit code 0 [2023-11-24 22:04:28,204 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a59a5fc-9acf-4763-9661-1569bb12e28f/bin/uautomizer-verify-NlZe1sFDwI/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 [2023-11-24 22:04:28,205 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2023-11-24 22:04:28,205 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 22:04:28,205 INFO L85 PathProgramCache]: Analyzing trace with hash -1760580882, now seen corresponding path program 1 times [2023-11-24 22:04:28,206 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-24 22:04:28,206 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1153950761] [2023-11-24 22:04:28,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 22:04:28,206 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 [2023-11-24 22:04:28,206 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a59a5fc-9acf-4763-9661-1569bb12e28f/bin/uautomizer-verify-NlZe1sFDwI/mathsat [2023-11-24 22:04:28,211 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a59a5fc-9acf-4763-9661-1569bb12e28f/bin/uautomizer-verify-NlZe1sFDwI/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) [2023-11-24 22:04:28,237 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a59a5fc-9acf-4763-9661-1569bb12e28f/bin/uautomizer-verify-NlZe1sFDwI/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 [2023-11-24 22:04:28,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 22:04:28,334 INFO L262 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-24 22:04:28,336 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 22:04:28,496 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 22:04:28,497 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-24 22:04:28,854 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 22:04:28,855 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-24 22:04:28,855 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1153950761] [2023-11-24 22:04:28,855 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1153950761] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-24 22:04:28,855 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-24 22:04:28,855 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 16 [2023-11-24 22:04:28,855 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [226214064] [2023-11-24 22:04:28,855 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-24 22:04:28,856 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-11-24 22:04:28,856 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-24 22:04:28,857 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-11-24 22:04:28,857 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=163, Unknown=0, NotChecked=0, Total=240 [2023-11-24 22:04:28,857 INFO L87 Difference]: Start difference. First operand 92 states and 112 transitions. Second operand has 16 states, 16 states have (on average 2.3125) internal successors, (37), 16 states have internal predecessors, (37), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-24 22:04:29,515 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 22:04:29,515 INFO L93 Difference]: Finished difference Result 92 states and 107 transitions. [2023-11-24 22:04:29,518 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-11-24 22:04:29,518 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.3125) internal successors, (37), 16 states have internal predecessors, (37), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 25 [2023-11-24 22:04:29,518 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 22:04:29,519 INFO L225 Difference]: With dead ends: 92 [2023-11-24 22:04:29,519 INFO L226 Difference]: Without dead ends: 92 [2023-11-24 22:04:29,520 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=133, Invalid=247, Unknown=0, NotChecked=0, Total=380 [2023-11-24 22:04:29,521 INFO L413 NwaCegarLoop]: 50 mSDtfsCounter, 62 mSDsluCounter, 375 mSDsCounter, 0 mSdLazyCounter, 189 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 63 SdHoareTripleChecker+Valid, 425 SdHoareTripleChecker+Invalid, 190 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 189 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-24 22:04:29,521 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [63 Valid, 425 Invalid, 190 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 189 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-24 22:04:29,522 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2023-11-24 22:04:29,526 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 92. [2023-11-24 22:04:29,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 92 states, 69 states have (on average 1.4782608695652173) internal successors, (102), 88 states have internal predecessors, (102), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-11-24 22:04:29,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 107 transitions. [2023-11-24 22:04:29,528 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 107 transitions. Word has length 25 [2023-11-24 22:04:29,529 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 22:04:29,529 INFO L495 AbstractCegarLoop]: Abstraction has 92 states and 107 transitions. [2023-11-24 22:04:29,529 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 2.3125) internal successors, (37), 16 states have internal predecessors, (37), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-24 22:04:29,529 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 107 transitions. [2023-11-24 22:04:29,530 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2023-11-24 22:04:29,530 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 22:04:29,531 INFO L195 NwaCegarLoop]: trace histogram [11, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 22:04:29,538 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a59a5fc-9acf-4763-9661-1569bb12e28f/bin/uautomizer-verify-NlZe1sFDwI/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 [2023-11-24 22:04:29,734 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a59a5fc-9acf-4763-9661-1569bb12e28f/bin/uautomizer-verify-NlZe1sFDwI/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 [2023-11-24 22:04:29,734 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2023-11-24 22:04:29,735 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 22:04:29,735 INFO L85 PathProgramCache]: Analyzing trace with hash 758242373, now seen corresponding path program 3 times [2023-11-24 22:04:29,735 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-24 22:04:29,735 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1258965890] [2023-11-24 22:04:29,735 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-24 22:04:29,736 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 [2023-11-24 22:04:29,736 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a59a5fc-9acf-4763-9661-1569bb12e28f/bin/uautomizer-verify-NlZe1sFDwI/mathsat [2023-11-24 22:04:29,737 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a59a5fc-9acf-4763-9661-1569bb12e28f/bin/uautomizer-verify-NlZe1sFDwI/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) [2023-11-24 22:04:29,745 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a59a5fc-9acf-4763-9661-1569bb12e28f/bin/uautomizer-verify-NlZe1sFDwI/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 [2023-11-24 22:04:29,958 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) [2023-11-24 22:04:29,958 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-24 22:04:29,963 INFO L262 TraceCheckSpWp]: Trace formula consists of 189 conjuncts, 23 conjunts are in the unsatisfiable core [2023-11-24 22:04:29,966 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 22:04:29,989 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 [2023-11-24 22:04:30,814 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 10 proven. 100 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 22:04:30,814 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-24 22:04:34,919 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 0 proven. 110 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-24 22:04:34,919 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-24 22:04:34,919 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1258965890] [2023-11-24 22:04:34,919 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1258965890] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-24 22:04:34,920 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-24 22:04:34,920 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18] total 35 [2023-11-24 22:04:34,920 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1890344545] [2023-11-24 22:04:34,920 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-24 22:04:34,921 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2023-11-24 22:04:34,921 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-24 22:04:34,922 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2023-11-24 22:04:34,923 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=267, Invalid=923, Unknown=0, NotChecked=0, Total=1190 [2023-11-24 22:04:34,923 INFO L87 Difference]: Start difference. First operand 92 states and 107 transitions. Second operand has 35 states, 33 states have (on average 1.696969696969697) internal successors, (56), 32 states have internal predecessors, (56), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-24 22:04:40,514 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 22:04:40,514 INFO L93 Difference]: Finished difference Result 142 states and 159 transitions. [2023-11-24 22:04:40,517 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-11-24 22:04:40,517 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 33 states have (on average 1.696969696969697) internal successors, (56), 32 states have internal predecessors, (56), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 30 [2023-11-24 22:04:40,517 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 22:04:40,518 INFO L225 Difference]: With dead ends: 142 [2023-11-24 22:04:40,518 INFO L226 Difference]: Without dead ends: 142 [2023-11-24 22:04:40,519 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 357 ImplicationChecksByTransitivity, 5.5s TimeCoverageRelationStatistics Valid=313, Invalid=1169, Unknown=0, NotChecked=0, Total=1482 [2023-11-24 22:04:40,520 INFO L413 NwaCegarLoop]: 32 mSDtfsCounter, 633 mSDsluCounter, 778 mSDsCounter, 0 mSdLazyCounter, 1005 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 635 SdHoareTripleChecker+Valid, 810 SdHoareTripleChecker+Invalid, 1039 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 1005 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.8s IncrementalHoareTripleChecker+Time [2023-11-24 22:04:40,521 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [635 Valid, 810 Invalid, 1039 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 1005 Invalid, 0 Unknown, 0 Unchecked, 3.8s Time] [2023-11-24 22:04:40,521 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 142 states. [2023-11-24 22:04:40,526 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 142 to 90. [2023-11-24 22:04:40,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 90 states, 68 states have (on average 1.4558823529411764) internal successors, (99), 86 states have internal predecessors, (99), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-11-24 22:04:40,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 104 transitions. [2023-11-24 22:04:40,528 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 104 transitions. Word has length 30 [2023-11-24 22:04:40,528 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 22:04:40,528 INFO L495 AbstractCegarLoop]: Abstraction has 90 states and 104 transitions. [2023-11-24 22:04:40,528 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 33 states have (on average 1.696969696969697) internal successors, (56), 32 states have internal predecessors, (56), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-24 22:04:40,529 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 104 transitions. [2023-11-24 22:04:40,530 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2023-11-24 22:04:40,530 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 22:04:40,530 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 22:04:40,538 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a59a5fc-9acf-4763-9661-1569bb12e28f/bin/uautomizer-verify-NlZe1sFDwI/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)] Forceful destruction successful, exit code 0 [2023-11-24 22:04:40,737 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a59a5fc-9acf-4763-9661-1569bb12e28f/bin/uautomizer-verify-NlZe1sFDwI/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 [2023-11-24 22:04:40,738 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2023-11-24 22:04:40,738 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 22:04:40,738 INFO L85 PathProgramCache]: Analyzing trace with hash -337918697, now seen corresponding path program 2 times [2023-11-24 22:04:40,739 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-24 22:04:40,739 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [601607005] [2023-11-24 22:04:40,739 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-24 22:04:40,739 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 [2023-11-24 22:04:40,739 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a59a5fc-9acf-4763-9661-1569bb12e28f/bin/uautomizer-verify-NlZe1sFDwI/mathsat [2023-11-24 22:04:40,741 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a59a5fc-9acf-4763-9661-1569bb12e28f/bin/uautomizer-verify-NlZe1sFDwI/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) [2023-11-24 22:04:40,743 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a59a5fc-9acf-4763-9661-1569bb12e28f/bin/uautomizer-verify-NlZe1sFDwI/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 [2023-11-24 22:04:40,829 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-11-24 22:04:40,829 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-24 22:04:40,831 INFO L262 TraceCheckSpWp]: Trace formula consists of 56 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-24 22:04:40,838 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 22:04:40,843 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 [2023-11-24 22:04:40,955 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2023-11-24 22:04:40,955 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-24 22:04:40,955 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-24 22:04:40,956 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [601607005] [2023-11-24 22:04:40,956 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [601607005] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 22:04:40,956 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 22:04:40,956 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-24 22:04:40,956 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1738441122] [2023-11-24 22:04:40,956 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 22:04:40,957 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-24 22:04:40,957 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-24 22:04:40,958 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-24 22:04:40,958 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-24 22:04:40,958 INFO L87 Difference]: Start difference. First operand 90 states and 104 transitions. Second operand has 6 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 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) [2023-11-24 22:04:41,196 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 22:04:41,196 INFO L93 Difference]: Finished difference Result 100 states and 115 transitions. [2023-11-24 22:04:41,196 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-24 22:04:41,197 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 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 35 [2023-11-24 22:04:41,197 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 22:04:41,198 INFO L225 Difference]: With dead ends: 100 [2023-11-24 22:04:41,198 INFO L226 Difference]: Without dead ends: 100 [2023-11-24 22:04:41,198 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-11-24 22:04:41,199 INFO L413 NwaCegarLoop]: 44 mSDtfsCounter, 28 mSDsluCounter, 115 mSDsCounter, 0 mSdLazyCounter, 127 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 159 SdHoareTripleChecker+Invalid, 128 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 127 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-24 22:04:41,200 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [28 Valid, 159 Invalid, 128 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 127 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-24 22:04:41,200 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2023-11-24 22:04:41,204 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 91. [2023-11-24 22:04:41,204 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 91 states, 69 states have (on average 1.463768115942029) internal successors, (101), 87 states have internal predecessors, (101), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-11-24 22:04:41,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 106 transitions. [2023-11-24 22:04:41,205 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 106 transitions. Word has length 35 [2023-11-24 22:04:41,210 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 22:04:41,210 INFO L495 AbstractCegarLoop]: Abstraction has 91 states and 106 transitions. [2023-11-24 22:04:41,210 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 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) [2023-11-24 22:04:41,211 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 106 transitions. [2023-11-24 22:04:41,212 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2023-11-24 22:04:41,212 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 22:04:41,212 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 22:04:41,218 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a59a5fc-9acf-4763-9661-1569bb12e28f/bin/uautomizer-verify-NlZe1sFDwI/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 [2023-11-24 22:04:41,414 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a59a5fc-9acf-4763-9661-1569bb12e28f/bin/uautomizer-verify-NlZe1sFDwI/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 [2023-11-24 22:04:41,415 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr12REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2023-11-24 22:04:41,415 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 22:04:41,415 INFO L85 PathProgramCache]: Analyzing trace with hash -337918696, now seen corresponding path program 1 times [2023-11-24 22:04:41,416 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-24 22:04:41,416 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [715850717] [2023-11-24 22:04:41,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 22:04:41,416 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 [2023-11-24 22:04:41,416 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a59a5fc-9acf-4763-9661-1569bb12e28f/bin/uautomizer-verify-NlZe1sFDwI/mathsat [2023-11-24 22:04:41,417 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a59a5fc-9acf-4763-9661-1569bb12e28f/bin/uautomizer-verify-NlZe1sFDwI/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) [2023-11-24 22:04:41,423 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a59a5fc-9acf-4763-9661-1569bb12e28f/bin/uautomizer-verify-NlZe1sFDwI/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 [2023-11-24 22:04:41,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 22:04:41,574 INFO L262 TraceCheckSpWp]: Trace formula consists of 206 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-24 22:04:41,576 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 22:04:41,654 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2023-11-24 22:04:41,654 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-24 22:04:41,654 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-24 22:04:41,654 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [715850717] [2023-11-24 22:04:41,654 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [715850717] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 22:04:41,654 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 22:04:41,655 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-24 22:04:41,655 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [409598913] [2023-11-24 22:04:41,655 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 22:04:41,655 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-24 22:04:41,655 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-24 22:04:41,656 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-24 22:04:41,656 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-24 22:04:41,656 INFO L87 Difference]: Start difference. First operand 91 states and 106 transitions. Second operand has 4 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 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) [2023-11-24 22:04:41,750 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 22:04:41,750 INFO L93 Difference]: Finished difference Result 97 states and 106 transitions. [2023-11-24 22:04:41,752 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-24 22:04:41,752 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 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 35 [2023-11-24 22:04:41,752 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 22:04:41,753 INFO L225 Difference]: With dead ends: 97 [2023-11-24 22:04:41,753 INFO L226 Difference]: Without dead ends: 97 [2023-11-24 22:04:41,753 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-24 22:04:41,754 INFO L413 NwaCegarLoop]: 48 mSDtfsCounter, 88 mSDsluCounter, 54 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 89 SdHoareTripleChecker+Valid, 102 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-24 22:04:41,755 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [89 Valid, 102 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-24 22:04:41,755 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2023-11-24 22:04:41,758 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 76. [2023-11-24 22:04:41,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 76 states, 54 states have (on average 1.4074074074074074) internal successors, (76), 72 states have internal predecessors, (76), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-11-24 22:04:41,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 81 transitions. [2023-11-24 22:04:41,759 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 81 transitions. Word has length 35 [2023-11-24 22:04:41,759 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 22:04:41,759 INFO L495 AbstractCegarLoop]: Abstraction has 76 states and 81 transitions. [2023-11-24 22:04:41,760 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 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) [2023-11-24 22:04:41,760 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 81 transitions. [2023-11-24 22:04:41,761 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2023-11-24 22:04:41,761 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 22:04:41,761 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 22:04:41,765 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a59a5fc-9acf-4763-9661-1569bb12e28f/bin/uautomizer-verify-NlZe1sFDwI/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)] Forceful destruction successful, exit code 0 [2023-11-24 22:04:41,961 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a59a5fc-9acf-4763-9661-1569bb12e28f/bin/uautomizer-verify-NlZe1sFDwI/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 [2023-11-24 22:04:41,962 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2023-11-24 22:04:41,962 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 22:04:41,962 INFO L85 PathProgramCache]: Analyzing trace with hash -138869171, now seen corresponding path program 1 times [2023-11-24 22:04:41,963 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-24 22:04:41,963 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1341290685] [2023-11-24 22:04:41,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 22:04:41,963 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 [2023-11-24 22:04:41,963 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a59a5fc-9acf-4763-9661-1569bb12e28f/bin/uautomizer-verify-NlZe1sFDwI/mathsat [2023-11-24 22:04:41,965 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a59a5fc-9acf-4763-9661-1569bb12e28f/bin/uautomizer-verify-NlZe1sFDwI/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) [2023-11-24 22:04:42,005 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a59a5fc-9acf-4763-9661-1569bb12e28f/bin/uautomizer-verify-NlZe1sFDwI/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 [2023-11-24 22:04:42,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 22:04:42,204 INFO L262 TraceCheckSpWp]: Trace formula consists of 218 conjuncts, 24 conjunts are in the unsatisfiable core [2023-11-24 22:04:42,211 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 22:04:42,234 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 [2023-11-24 22:04:42,250 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 [2023-11-24 22:04:42,678 WARN L876 $PredicateComparison]: unable to prove that (exists ((|ldv_malloc_#res.base| (_ BitVec 32))) (and (= (_ bv0 1) (select |c_old(#valid)| |ldv_malloc_#res.base|)) (= (store |c_old(#length)| |ldv_malloc_#res.base| (select |c_#length| |ldv_malloc_#res.base|)) |c_#length|))) is different from true [2023-11-24 22:04:42,707 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 22:04:42,709 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 [2023-11-24 22:04:42,728 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2023-11-24 22:04:42,729 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 [2023-11-24 22:04:42,788 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 100 trivial. 2 not checked. [2023-11-24 22:04:42,788 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-24 22:04:47,084 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse1 (bvmul |c_ULTIMATE.start_alloc_17_~i~0#1| (_ bv4 32)))) (let ((.cse0 (bvadd .cse1 (_ bv4 32) |c_ULTIMATE.start_alloc_17_~array#1.offset|))) (and (forall ((|v_ldv_malloc_#res.base_23| (_ BitVec 32))) (or (not (= (_ bv0 1) (select |c_#valid| |v_ldv_malloc_#res.base_23|))) (forall ((v_ArrVal_337 (_ BitVec 32))) (bvule .cse0 (select (store |c_#length| |v_ldv_malloc_#res.base_23| v_ArrVal_337) |c_ULTIMATE.start_alloc_17_~array#1.base|))))) (or (bvule (bvadd .cse1 |c_ULTIMATE.start_alloc_17_~array#1.offset|) .cse0) (forall ((|v_ldv_malloc_#res.base_23| (_ BitVec 32))) (not (= (_ bv0 1) (select |c_#valid| |v_ldv_malloc_#res.base_23|)))))))) is different from false [2023-11-24 22:04:47,093 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-24 22:04:47,094 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1341290685] [2023-11-24 22:04:47,094 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1341290685] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-24 22:04:47,094 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1161986164] [2023-11-24 22:04:47,094 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 22:04:47,094 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-11-24 22:04:47,094 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a59a5fc-9acf-4763-9661-1569bb12e28f/bin/uautomizer-verify-NlZe1sFDwI/cvc4 [2023-11-24 22:04:47,096 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a59a5fc-9acf-4763-9661-1569bb12e28f/bin/uautomizer-verify-NlZe1sFDwI/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-11-24 22:04:47,097 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a59a5fc-9acf-4763-9661-1569bb12e28f/bin/uautomizer-verify-NlZe1sFDwI/cvc4 --incremental --print-success --lang smt (14)] Waiting until timeout for monitored process [2023-11-24 22:04:47,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 22:04:47,563 INFO L262 TraceCheckSpWp]: Trace formula consists of 218 conjuncts, 24 conjunts are in the unsatisfiable core [2023-11-24 22:04:47,566 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 22:04:47,578 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 [2023-11-24 22:04:47,584 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 [2023-11-24 22:04:47,923 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-24 22:04:47,924 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 [2023-11-24 22:04:47,942 INFO L349 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2023-11-24 22:04:47,942 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 [2023-11-24 22:04:47,973 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 100 trivial. 2 not checked. [2023-11-24 22:04:47,973 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-24 22:04:48,411 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1161986164] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-24 22:04:48,411 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-24 22:04:48,411 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 10 [2023-11-24 22:04:48,411 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1019248677] [2023-11-24 22:04:48,411 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-24 22:04:48,412 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-24 22:04:48,412 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-24 22:04:48,412 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-24 22:04:48,413 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=109, Unknown=2, NotChecked=42, Total=182 [2023-11-24 22:04:48,413 INFO L87 Difference]: Start difference. First operand 76 states and 81 transitions. Second operand has 11 states, 9 states have (on average 1.8888888888888888) internal successors, (17), 9 states have internal predecessors, (17), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-24 22:04:49,472 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 22:04:49,473 INFO L93 Difference]: Finished difference Result 150 states and 168 transitions. [2023-11-24 22:04:49,473 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-24 22:04:49,473 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 9 states have (on average 1.8888888888888888) internal successors, (17), 9 states have internal predecessors, (17), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 39 [2023-11-24 22:04:49,474 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 22:04:49,475 INFO L225 Difference]: With dead ends: 150 [2023-11-24 22:04:49,475 INFO L226 Difference]: Without dead ends: 150 [2023-11-24 22:04:49,476 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 72 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 4.8s TimeCoverageRelationStatistics Valid=69, Invalid=279, Unknown=2, NotChecked=70, Total=420 [2023-11-24 22:04:49,477 INFO L413 NwaCegarLoop]: 58 mSDtfsCounter, 151 mSDsluCounter, 319 mSDsCounter, 0 mSdLazyCounter, 409 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 154 SdHoareTripleChecker+Valid, 377 SdHoareTripleChecker+Invalid, 572 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 409 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 148 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-11-24 22:04:49,477 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [154 Valid, 377 Invalid, 572 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 409 Invalid, 0 Unknown, 148 Unchecked, 0.8s Time] [2023-11-24 22:04:49,478 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 150 states. [2023-11-24 22:04:49,482 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 150 to 106. [2023-11-24 22:04:49,483 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 106 states, 82 states have (on average 1.524390243902439) internal successors, (125), 99 states have internal predecessors, (125), 4 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (7), 5 states have call predecessors, (7), 4 states have call successors, (7) [2023-11-24 22:04:49,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 136 transitions. [2023-11-24 22:04:49,484 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 136 transitions. Word has length 39 [2023-11-24 22:04:49,485 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 22:04:49,485 INFO L495 AbstractCegarLoop]: Abstraction has 106 states and 136 transitions. [2023-11-24 22:04:49,485 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 9 states have (on average 1.8888888888888888) internal successors, (17), 9 states have internal predecessors, (17), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-24 22:04:49,486 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 136 transitions. [2023-11-24 22:04:49,487 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2023-11-24 22:04:49,487 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 22:04:49,487 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 22:04:49,494 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a59a5fc-9acf-4763-9661-1569bb12e28f/bin/uautomizer-verify-NlZe1sFDwI/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)] Forceful destruction successful, exit code 0 [2023-11-24 22:04:49,693 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a59a5fc-9acf-4763-9661-1569bb12e28f/bin/uautomizer-verify-NlZe1sFDwI/cvc4 --incremental --print-success --lang smt (14)] Forceful destruction successful, exit code 0 [2023-11-24 22:04:49,890 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a59a5fc-9acf-4763-9661-1569bb12e28f/bin/uautomizer-verify-NlZe1sFDwI/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 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a59a5fc-9acf-4763-9661-1569bb12e28f/bin/uautomizer-verify-NlZe1sFDwI/cvc4 --incremental --print-success --lang smt [2023-11-24 22:04:49,890 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2023-11-24 22:04:49,890 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 22:04:49,890 INFO L85 PathProgramCache]: Analyzing trace with hash -138869172, now seen corresponding path program 1 times [2023-11-24 22:04:49,891 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-24 22:04:49,891 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1371026169] [2023-11-24 22:04:49,891 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 22:04:49,891 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 [2023-11-24 22:04:49,891 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a59a5fc-9acf-4763-9661-1569bb12e28f/bin/uautomizer-verify-NlZe1sFDwI/mathsat [2023-11-24 22:04:49,893 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a59a5fc-9acf-4763-9661-1569bb12e28f/bin/uautomizer-verify-NlZe1sFDwI/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) [2023-11-24 22:04:49,896 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a59a5fc-9acf-4763-9661-1569bb12e28f/bin/uautomizer-verify-NlZe1sFDwI/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 [2023-11-24 22:04:50,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 22:04:50,107 INFO L262 TraceCheckSpWp]: Trace formula consists of 218 conjuncts, 11 conjunts are in the unsatisfiable core [2023-11-24 22:04:50,109 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 22:04:50,113 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 [2023-11-24 22:04:50,249 WARN L876 $PredicateComparison]: unable to prove that (exists ((|ldv_malloc_#res.base| (_ BitVec 32))) (= (store |c_old(#valid)| |ldv_malloc_#res.base| (_ bv1 1)) |c_#valid|)) is different from true [2023-11-24 22:04:50,272 INFO L349 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2023-11-24 22:04:50,272 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 [2023-11-24 22:04:50,304 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 100 trivial. 2 not checked. [2023-11-24 22:04:50,304 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-24 22:04:50,567 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2023-11-24 22:04:50,568 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-24 22:04:50,568 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1371026169] [2023-11-24 22:04:50,568 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1371026169] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-24 22:04:50,568 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-24 22:04:50,568 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6] total 8 [2023-11-24 22:04:50,569 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [929496440] [2023-11-24 22:04:50,569 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-24 22:04:50,569 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-24 22:04:50,570 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-24 22:04:50,570 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-24 22:04:50,570 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=43, Unknown=1, NotChecked=12, Total=72 [2023-11-24 22:04:50,571 INFO L87 Difference]: Start difference. First operand 106 states and 136 transitions. Second operand has 9 states, 8 states have (on average 2.5) internal successors, (20), 8 states have internal predecessors, (20), 2 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-11-24 22:04:50,998 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 22:04:50,998 INFO L93 Difference]: Finished difference Result 135 states and 168 transitions. [2023-11-24 22:04:50,998 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-24 22:04:50,999 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.5) internal successors, (20), 8 states have internal predecessors, (20), 2 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 39 [2023-11-24 22:04:50,999 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 22:04:51,000 INFO L225 Difference]: With dead ends: 135 [2023-11-24 22:04:51,001 INFO L226 Difference]: Without dead ends: 135 [2023-11-24 22:04:51,001 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 66 SyntacticMatches, 3 SemanticMatches, 9 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=24, Invalid=69, Unknown=1, NotChecked=16, Total=110 [2023-11-24 22:04:51,002 INFO L413 NwaCegarLoop]: 36 mSDtfsCounter, 62 mSDsluCounter, 153 mSDsCounter, 0 mSdLazyCounter, 178 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 62 SdHoareTripleChecker+Valid, 189 SdHoareTripleChecker+Invalid, 272 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 178 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 87 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-24 22:04:51,002 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [62 Valid, 189 Invalid, 272 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 178 Invalid, 0 Unknown, 87 Unchecked, 0.4s Time] [2023-11-24 22:04:51,003 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135 states. [2023-11-24 22:04:51,007 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135 to 101. [2023-11-24 22:04:51,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 101 states, 79 states have (on average 1.3924050632911393) internal successors, (110), 94 states have internal predecessors, (110), 4 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (7), 5 states have call predecessors, (7), 4 states have call successors, (7) [2023-11-24 22:04:51,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 121 transitions. [2023-11-24 22:04:51,009 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 121 transitions. Word has length 39 [2023-11-24 22:04:51,010 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 22:04:51,010 INFO L495 AbstractCegarLoop]: Abstraction has 101 states and 121 transitions. [2023-11-24 22:04:51,010 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 2.5) internal successors, (20), 8 states have internal predecessors, (20), 2 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-11-24 22:04:51,011 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 121 transitions. [2023-11-24 22:04:51,012 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2023-11-24 22:04:51,012 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 22:04:51,012 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 22:04:51,020 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a59a5fc-9acf-4763-9661-1569bb12e28f/bin/uautomizer-verify-NlZe1sFDwI/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 [2023-11-24 22:04:51,218 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a59a5fc-9acf-4763-9661-1569bb12e28f/bin/uautomizer-verify-NlZe1sFDwI/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 [2023-11-24 22:04:51,218 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2023-11-24 22:04:51,219 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 22:04:51,219 INFO L85 PathProgramCache]: Analyzing trace with hash -9894757, now seen corresponding path program 1 times [2023-11-24 22:04:51,219 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-24 22:04:51,220 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1608954817] [2023-11-24 22:04:51,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 22:04:51,220 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 [2023-11-24 22:04:51,220 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a59a5fc-9acf-4763-9661-1569bb12e28f/bin/uautomizer-verify-NlZe1sFDwI/mathsat [2023-11-24 22:04:51,222 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a59a5fc-9acf-4763-9661-1569bb12e28f/bin/uautomizer-verify-NlZe1sFDwI/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) [2023-11-24 22:04:51,233 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a59a5fc-9acf-4763-9661-1569bb12e28f/bin/uautomizer-verify-NlZe1sFDwI/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 [2023-11-24 22:04:51,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 22:04:51,446 INFO L262 TraceCheckSpWp]: Trace formula consists of 221 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-24 22:04:51,448 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 22:04:51,497 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 102 trivial. 0 not checked. [2023-11-24 22:04:51,498 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-24 22:04:51,498 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-24 22:04:51,498 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1608954817] [2023-11-24 22:04:51,498 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1608954817] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 22:04:51,499 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 22:04:51,499 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-24 22:04:51,499 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1237998589] [2023-11-24 22:04:51,499 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 22:04:51,500 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-24 22:04:51,500 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-24 22:04:51,501 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-24 22:04:51,501 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-24 22:04:51,501 INFO L87 Difference]: Start difference. First operand 101 states and 121 transitions. Second operand has 5 states, 5 states have (on average 3.4) internal successors, (17), 4 states have internal predecessors, (17), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-24 22:04:51,616 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 22:04:51,616 INFO L93 Difference]: Finished difference Result 111 states and 133 transitions. [2023-11-24 22:04:51,616 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-24 22:04:51,617 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.4) internal successors, (17), 4 states have internal predecessors, (17), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 40 [2023-11-24 22:04:51,617 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 22:04:51,618 INFO L225 Difference]: With dead ends: 111 [2023-11-24 22:04:51,618 INFO L226 Difference]: Without dead ends: 111 [2023-11-24 22:04:51,619 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-11-24 22:04:51,620 INFO L413 NwaCegarLoop]: 53 mSDtfsCounter, 6 mSDsluCounter, 151 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 204 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-24 22:04:51,620 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 204 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-24 22:04:51,621 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2023-11-24 22:04:51,625 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 103. [2023-11-24 22:04:51,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 103 states, 81 states have (on average 1.3703703703703705) internal successors, (111), 95 states have internal predecessors, (111), 4 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (7), 6 states have call predecessors, (7), 4 states have call successors, (7) [2023-11-24 22:04:51,627 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 122 transitions. [2023-11-24 22:04:51,627 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 122 transitions. Word has length 40 [2023-11-24 22:04:51,627 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 22:04:51,628 INFO L495 AbstractCegarLoop]: Abstraction has 103 states and 122 transitions. [2023-11-24 22:04:51,628 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.4) internal successors, (17), 4 states have internal predecessors, (17), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-24 22:04:51,628 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 122 transitions. [2023-11-24 22:04:51,629 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2023-11-24 22:04:51,629 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 22:04:51,629 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 22:04:51,638 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a59a5fc-9acf-4763-9661-1569bb12e28f/bin/uautomizer-verify-NlZe1sFDwI/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)] Forceful destruction successful, exit code 0 [2023-11-24 22:04:51,833 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a59a5fc-9acf-4763-9661-1569bb12e28f/bin/uautomizer-verify-NlZe1sFDwI/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 [2023-11-24 22:04:51,834 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2023-11-24 22:04:51,834 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 22:04:51,834 INFO L85 PathProgramCache]: Analyzing trace with hash 877608924, now seen corresponding path program 1 times [2023-11-24 22:04:51,835 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-24 22:04:51,835 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [465462524] [2023-11-24 22:04:51,835 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 22:04:51,835 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 [2023-11-24 22:04:51,835 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a59a5fc-9acf-4763-9661-1569bb12e28f/bin/uautomizer-verify-NlZe1sFDwI/mathsat [2023-11-24 22:04:51,836 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a59a5fc-9acf-4763-9661-1569bb12e28f/bin/uautomizer-verify-NlZe1sFDwI/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) [2023-11-24 22:04:51,837 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a59a5fc-9acf-4763-9661-1569bb12e28f/bin/uautomizer-verify-NlZe1sFDwI/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 [2023-11-24 22:04:52,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 22:04:52,010 INFO L262 TraceCheckSpWp]: Trace formula consists of 215 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-24 22:04:52,012 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 22:04:52,032 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 104 trivial. 0 not checked. [2023-11-24 22:04:52,032 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-24 22:04:52,033 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-24 22:04:52,033 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [465462524] [2023-11-24 22:04:52,033 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [465462524] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 22:04:52,033 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 22:04:52,033 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-24 22:04:52,033 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1645556400] [2023-11-24 22:04:52,033 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 22:04:52,034 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-24 22:04:52,034 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-24 22:04:52,034 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-24 22:04:52,034 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-24 22:04:52,035 INFO L87 Difference]: Start difference. First operand 103 states and 122 transitions. Second operand has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-24 22:04:52,170 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 22:04:52,170 INFO L93 Difference]: Finished difference Result 106 states and 125 transitions. [2023-11-24 22:04:52,171 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-24 22:04:52,171 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 40 [2023-11-24 22:04:52,171 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 22:04:52,172 INFO L225 Difference]: With dead ends: 106 [2023-11-24 22:04:52,172 INFO L226 Difference]: Without dead ends: 106 [2023-11-24 22:04:52,173 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-24 22:04:52,174 INFO L413 NwaCegarLoop]: 51 mSDtfsCounter, 6 mSDsluCounter, 91 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 142 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-24 22:04:52,174 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 142 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-24 22:04:52,175 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2023-11-24 22:04:52,178 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 104. [2023-11-24 22:04:52,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 104 states, 82 states have (on average 1.3658536585365855) internal successors, (112), 96 states have internal predecessors, (112), 4 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (7), 6 states have call predecessors, (7), 4 states have call successors, (7) [2023-11-24 22:04:52,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 123 transitions. [2023-11-24 22:04:52,179 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 123 transitions. Word has length 40 [2023-11-24 22:04:52,180 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 22:04:52,180 INFO L495 AbstractCegarLoop]: Abstraction has 104 states and 123 transitions. [2023-11-24 22:04:52,180 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-24 22:04:52,180 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 123 transitions. [2023-11-24 22:04:52,181 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2023-11-24 22:04:52,182 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 22:04:52,182 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 22:04:52,187 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a59a5fc-9acf-4763-9661-1569bb12e28f/bin/uautomizer-verify-NlZe1sFDwI/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)] Forceful destruction successful, exit code 0 [2023-11-24 22:04:52,386 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a59a5fc-9acf-4763-9661-1569bb12e28f/bin/uautomizer-verify-NlZe1sFDwI/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 [2023-11-24 22:04:52,387 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2023-11-24 22:04:52,387 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 22:04:52,387 INFO L85 PathProgramCache]: Analyzing trace with hash 1380207625, now seen corresponding path program 1 times [2023-11-24 22:04:52,387 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-24 22:04:52,388 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1286493945] [2023-11-24 22:04:52,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 22:04:52,388 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 [2023-11-24 22:04:52,388 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a59a5fc-9acf-4763-9661-1569bb12e28f/bin/uautomizer-verify-NlZe1sFDwI/mathsat [2023-11-24 22:04:52,389 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a59a5fc-9acf-4763-9661-1569bb12e28f/bin/uautomizer-verify-NlZe1sFDwI/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) [2023-11-24 22:04:52,404 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a59a5fc-9acf-4763-9661-1569bb12e28f/bin/uautomizer-verify-NlZe1sFDwI/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 [2023-11-24 22:04:52,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 22:04:52,554 INFO L262 TraceCheckSpWp]: Trace formula consists of 224 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-24 22:04:52,556 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 22:04:52,560 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 [2023-11-24 22:04:52,697 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2023-11-24 22:04:52,697 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-24 22:04:52,912 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2023-11-24 22:04:52,912 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-24 22:04:52,912 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1286493945] [2023-11-24 22:04:52,912 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1286493945] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-24 22:04:52,913 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-24 22:04:52,913 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 7 [2023-11-24 22:04:52,913 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [98104854] [2023-11-24 22:04:52,913 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-24 22:04:52,913 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-24 22:04:52,914 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-24 22:04:52,914 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-24 22:04:52,914 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2023-11-24 22:04:52,915 INFO L87 Difference]: Start difference. First operand 104 states and 123 transitions. Second operand has 8 states, 7 states have (on average 3.4285714285714284) internal successors, (24), 7 states have internal predecessors, (24), 2 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-11-24 22:04:53,372 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 22:04:53,373 INFO L93 Difference]: Finished difference Result 122 states and 139 transitions. [2023-11-24 22:04:53,373 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-24 22:04:53,373 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.4285714285714284) internal successors, (24), 7 states have internal predecessors, (24), 2 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 43 [2023-11-24 22:04:53,374 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 22:04:53,375 INFO L225 Difference]: With dead ends: 122 [2023-11-24 22:04:53,375 INFO L226 Difference]: Without dead ends: 122 [2023-11-24 22:04:53,375 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 78 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2023-11-24 22:04:53,376 INFO L413 NwaCegarLoop]: 38 mSDtfsCounter, 41 mSDsluCounter, 167 mSDsCounter, 0 mSdLazyCounter, 178 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 205 SdHoareTripleChecker+Invalid, 181 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 178 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-24 22:04:53,376 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [41 Valid, 205 Invalid, 181 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 178 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-24 22:04:53,377 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states. [2023-11-24 22:04:53,381 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 105. [2023-11-24 22:04:53,382 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 105 states, 83 states have (on average 1.3734939759036144) internal successors, (114), 97 states have internal predecessors, (114), 4 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (7), 6 states have call predecessors, (7), 4 states have call successors, (7) [2023-11-24 22:04:53,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 125 transitions. [2023-11-24 22:04:53,383 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 125 transitions. Word has length 43 [2023-11-24 22:04:53,384 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 22:04:53,384 INFO L495 AbstractCegarLoop]: Abstraction has 105 states and 125 transitions. [2023-11-24 22:04:53,384 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.4285714285714284) internal successors, (24), 7 states have internal predecessors, (24), 2 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-11-24 22:04:53,384 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 125 transitions. [2023-11-24 22:04:53,385 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2023-11-24 22:04:53,385 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 22:04:53,386 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-24 22:04:53,395 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a59a5fc-9acf-4763-9661-1569bb12e28f/bin/uautomizer-verify-NlZe1sFDwI/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)] Forceful destruction successful, exit code 0 [2023-11-24 22:04:53,590 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a59a5fc-9acf-4763-9661-1569bb12e28f/bin/uautomizer-verify-NlZe1sFDwI/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 [2023-11-24 22:04:53,591 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr12REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2023-11-24 22:04:53,591 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 22:04:53,591 INFO L85 PathProgramCache]: Analyzing trace with hash 1380207626, now seen corresponding path program 1 times [2023-11-24 22:04:53,592 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-24 22:04:53,592 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1933861263] [2023-11-24 22:04:53,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 22:04:53,592 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 [2023-11-24 22:04:53,593 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a59a5fc-9acf-4763-9661-1569bb12e28f/bin/uautomizer-verify-NlZe1sFDwI/mathsat [2023-11-24 22:04:53,594 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a59a5fc-9acf-4763-9661-1569bb12e28f/bin/uautomizer-verify-NlZe1sFDwI/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) [2023-11-24 22:04:53,630 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a59a5fc-9acf-4763-9661-1569bb12e28f/bin/uautomizer-verify-NlZe1sFDwI/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 [2023-11-24 22:04:53,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 22:04:53,799 INFO L262 TraceCheckSpWp]: Trace formula consists of 224 conjuncts, 18 conjunts are in the unsatisfiable core [2023-11-24 22:04:53,801 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 22:04:53,825 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 [2023-11-24 22:04:54,173 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2023-11-24 22:04:54,174 INFO L327 TraceCheckSpWp]: Computing backward predicates...