./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/ldv-memsafety/memleaks_test22_2-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 527bcce2 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_717498c2-b4f6-4fa1-8058-92b22271e5ff/bin/uautomizer-verify-bycVGegfSx/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_717498c2-b4f6-4fa1-8058-92b22271e5ff/bin/uautomizer-verify-bycVGegfSx/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_717498c2-b4f6-4fa1-8058-92b22271e5ff/bin/uautomizer-verify-bycVGegfSx/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_717498c2-b4f6-4fa1-8058-92b22271e5ff/bin/uautomizer-verify-bycVGegfSx/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/ldv-memsafety/memleaks_test22_2-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_717498c2-b4f6-4fa1-8058-92b22271e5ff/bin/uautomizer-verify-bycVGegfSx/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_717498c2-b4f6-4fa1-8058-92b22271e5ff/bin/uautomizer-verify-bycVGegfSx --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash beb004be26a355c223f1a45515f5377c37b18fc46f09e77727f89b964ae9789d --- Real Ultimate output --- This is Ultimate 0.2.3-dev-527bcce [2023-11-21 22:22:01,249 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-21 22:22:01,367 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_717498c2-b4f6-4fa1-8058-92b22271e5ff/bin/uautomizer-verify-bycVGegfSx/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2023-11-21 22:22:01,385 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-21 22:22:01,386 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-21 22:22:01,433 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-21 22:22:01,434 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-21 22:22:01,435 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-21 22:22:01,436 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-21 22:22:01,441 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-21 22:22:01,442 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-21 22:22:01,442 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-21 22:22:01,443 INFO L153 SettingsManager]: * Use SBE=true [2023-11-21 22:22:01,445 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-21 22:22:01,445 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-21 22:22:01,446 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-21 22:22:01,446 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-21 22:22:01,447 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-21 22:22:01,447 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-21 22:22:01,448 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-21 22:22:01,448 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-21 22:22:01,449 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-21 22:22:01,449 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-21 22:22:01,450 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-21 22:22:01,450 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-21 22:22:01,451 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-21 22:22:01,452 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-21 22:22:01,452 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-21 22:22:01,453 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-21 22:22:01,453 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-21 22:22:01,455 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-21 22:22:01,455 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-21 22:22:01,455 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-21 22:22:01,456 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-21 22:22:01,456 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-21 22:22:01,456 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-21 22:22:01,456 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-21 22:22:01,457 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-21 22:22:01,457 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-21 22:22:01,457 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_717498c2-b4f6-4fa1-8058-92b22271e5ff/bin/uautomizer-verify-bycVGegfSx/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_717498c2-b4f6-4fa1-8058-92b22271e5ff/bin/uautomizer-verify-bycVGegfSx Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> beb004be26a355c223f1a45515f5377c37b18fc46f09e77727f89b964ae9789d [2023-11-21 22:22:01,798 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-21 22:22:01,830 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-21 22:22:01,832 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-21 22:22:01,834 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-21 22:22:01,835 INFO L274 PluginConnector]: CDTParser initialized [2023-11-21 22:22:01,837 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_717498c2-b4f6-4fa1-8058-92b22271e5ff/bin/uautomizer-verify-bycVGegfSx/../../sv-benchmarks/c/ldv-memsafety/memleaks_test22_2-2.i [2023-11-21 22:22:04,935 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-21 22:22:05,251 INFO L384 CDTParser]: Found 1 translation units. [2023-11-21 22:22:05,252 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_717498c2-b4f6-4fa1-8058-92b22271e5ff/sv-benchmarks/c/ldv-memsafety/memleaks_test22_2-2.i [2023-11-21 22:22:05,268 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_717498c2-b4f6-4fa1-8058-92b22271e5ff/bin/uautomizer-verify-bycVGegfSx/data/7c7866b5a/ee95ed1bf01b477883116e9dfa71a6b2/FLAG870abd26f [2023-11-21 22:22:05,283 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_717498c2-b4f6-4fa1-8058-92b22271e5ff/bin/uautomizer-verify-bycVGegfSx/data/7c7866b5a/ee95ed1bf01b477883116e9dfa71a6b2 [2023-11-21 22:22:05,286 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-21 22:22:05,288 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-21 22:22:05,289 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-21 22:22:05,291 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-21 22:22:05,297 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-21 22:22:05,298 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 10:22:05" (1/1) ... [2023-11-21 22:22:05,299 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1318137c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:22:05, skipping insertion in model container [2023-11-21 22:22:05,300 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 10:22:05" (1/1) ... [2023-11-21 22:22:05,352 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-21 22:22:05,881 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-21 22:22:05,900 ERROR L324 MainTranslator]: Unsupported Syntax: Found a cast between two array/pointer types of different sizes while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) [2023-11-21 22:22:05,901 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@5d8e5896 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:22:05, skipping insertion in model container [2023-11-21 22:22:05,901 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-21 22:22:05,901 INFO L186 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2023-11-21 22:22:05,904 INFO L158 Benchmark]: Toolchain (without parser) took 614.95ms. Allocated memory was 132.1MB in the beginning and 176.2MB in the end (delta: 44.0MB). Free memory was 74.2MB in the beginning and 144.4MB in the end (delta: -70.3MB). Peak memory consumption was 20.5MB. Max. memory is 16.1GB. [2023-11-21 22:22:05,904 INFO L158 Benchmark]: CDTParser took 0.52ms. Allocated memory is still 132.1MB. Free memory was 98.4MB in the beginning and 98.4MB in the end (delta: 30.2kB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-21 22:22:05,905 INFO L158 Benchmark]: CACSL2BoogieTranslator took 611.95ms. Allocated memory was 132.1MB in the beginning and 176.2MB in the end (delta: 44.0MB). Free memory was 74.2MB in the beginning and 144.4MB in the end (delta: -70.3MB). Peak memory consumption was 20.5MB. Max. memory is 16.1GB. [2023-11-21 22:22:05,907 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.52ms. Allocated memory is still 132.1MB. Free memory was 98.4MB in the beginning and 98.4MB in the end (delta: 30.2kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 611.95ms. Allocated memory was 132.1MB in the beginning and 176.2MB in the end (delta: 44.0MB). Free memory was 74.2MB in the beginning and 144.4MB in the end (delta: -70.3MB). Peak memory consumption was 20.5MB. 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-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_717498c2-b4f6-4fa1-8058-92b22271e5ff/bin/uautomizer-verify-bycVGegfSx/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_717498c2-b4f6-4fa1-8058-92b22271e5ff/bin/uautomizer-verify-bycVGegfSx/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_717498c2-b4f6-4fa1-8058-92b22271e5ff/bin/uautomizer-verify-bycVGegfSx/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_717498c2-b4f6-4fa1-8058-92b22271e5ff/bin/uautomizer-verify-bycVGegfSx/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/ldv-memsafety/memleaks_test22_2-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_717498c2-b4f6-4fa1-8058-92b22271e5ff/bin/uautomizer-verify-bycVGegfSx/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_717498c2-b4f6-4fa1-8058-92b22271e5ff/bin/uautomizer-verify-bycVGegfSx --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash beb004be26a355c223f1a45515f5377c37b18fc46f09e77727f89b964ae9789d --- Real Ultimate output --- This is Ultimate 0.2.3-dev-527bcce [2023-11-21 22:22:08,478 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-21 22:22:08,617 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_717498c2-b4f6-4fa1-8058-92b22271e5ff/bin/uautomizer-verify-bycVGegfSx/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2023-11-21 22:22:08,626 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-21 22:22:08,627 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-21 22:22:08,672 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-21 22:22:08,673 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-21 22:22:08,674 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-21 22:22:08,675 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-21 22:22:08,680 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-21 22:22:08,681 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-21 22:22:08,682 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-21 22:22:08,682 INFO L153 SettingsManager]: * Use SBE=true [2023-11-21 22:22:08,684 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-21 22:22:08,685 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-21 22:22:08,685 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-21 22:22:08,685 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-21 22:22:08,686 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-21 22:22:08,686 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-21 22:22:08,687 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-21 22:22:08,687 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-21 22:22:08,688 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-21 22:22:08,688 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-21 22:22:08,688 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-11-21 22:22:08,689 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-11-21 22:22:08,689 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-21 22:22:08,690 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-21 22:22:08,690 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-21 22:22:08,691 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-21 22:22:08,691 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-21 22:22:08,693 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-21 22:22:08,693 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-21 22:22:08,693 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-21 22:22:08,694 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-21 22:22:08,694 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-21 22:22:08,694 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2023-11-21 22:22:08,695 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-11-21 22:22:08,695 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-21 22:22:08,695 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-21 22:22:08,696 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-21 22:22:08,696 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-21 22:22:08,697 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2023-11-21 22:22:08,697 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_717498c2-b4f6-4fa1-8058-92b22271e5ff/bin/uautomizer-verify-bycVGegfSx/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_717498c2-b4f6-4fa1-8058-92b22271e5ff/bin/uautomizer-verify-bycVGegfSx Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> beb004be26a355c223f1a45515f5377c37b18fc46f09e77727f89b964ae9789d [2023-11-21 22:22:09,145 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-21 22:22:09,174 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-21 22:22:09,177 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-21 22:22:09,178 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-21 22:22:09,179 INFO L274 PluginConnector]: CDTParser initialized [2023-11-21 22:22:09,181 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_717498c2-b4f6-4fa1-8058-92b22271e5ff/bin/uautomizer-verify-bycVGegfSx/../../sv-benchmarks/c/ldv-memsafety/memleaks_test22_2-2.i [2023-11-21 22:22:12,376 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-21 22:22:12,699 INFO L384 CDTParser]: Found 1 translation units. [2023-11-21 22:22:12,700 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_717498c2-b4f6-4fa1-8058-92b22271e5ff/sv-benchmarks/c/ldv-memsafety/memleaks_test22_2-2.i [2023-11-21 22:22:12,720 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_717498c2-b4f6-4fa1-8058-92b22271e5ff/bin/uautomizer-verify-bycVGegfSx/data/87c945c75/c306efed60b940d7b137158b2b386091/FLAGb62e09eac [2023-11-21 22:22:12,743 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_717498c2-b4f6-4fa1-8058-92b22271e5ff/bin/uautomizer-verify-bycVGegfSx/data/87c945c75/c306efed60b940d7b137158b2b386091 [2023-11-21 22:22:12,747 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-21 22:22:12,750 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-21 22:22:12,753 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-21 22:22:12,754 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-21 22:22:12,759 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-21 22:22:12,760 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 10:22:12" (1/1) ... [2023-11-21 22:22:12,761 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5c113638 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:22:12, skipping insertion in model container [2023-11-21 22:22:12,761 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 10:22:12" (1/1) ... [2023-11-21 22:22:12,817 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-21 22:22:13,338 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-21 22:22:13,372 INFO L199 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2023-11-21 22:22:13,412 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-21 22:22:13,500 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-21 22:22:13,514 INFO L202 MainTranslator]: Completed pre-run [2023-11-21 22:22:13,612 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-21 22:22:13,697 WARN L675 CHandler]: The function release is called, but not defined or handled by StandardFunctionHandler. [2023-11-21 22:22:13,707 INFO L206 MainTranslator]: Completed translation [2023-11-21 22:22:13,709 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:22:13 WrapperNode [2023-11-21 22:22:13,709 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-21 22:22:13,711 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-21 22:22:13,711 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-21 22:22:13,711 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-21 22:22:13,722 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:22:13" (1/1) ... [2023-11-21 22:22:13,777 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:22:13" (1/1) ... [2023-11-21 22:22:13,834 INFO L138 Inliner]: procedures = 165, calls = 71, calls flagged for inlining = 23, calls inlined = 17, statements flattened = 122 [2023-11-21 22:22:13,834 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-21 22:22:13,836 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-21 22:22:13,836 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-21 22:22:13,837 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-21 22:22:13,849 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:22:13" (1/1) ... [2023-11-21 22:22:13,849 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:22:13" (1/1) ... [2023-11-21 22:22:13,869 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:22:13" (1/1) ... [2023-11-21 22:22:13,878 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:22:13" (1/1) ... [2023-11-21 22:22:13,910 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:22:13" (1/1) ... [2023-11-21 22:22:13,914 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:22:13" (1/1) ... [2023-11-21 22:22:13,917 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:22:13" (1/1) ... [2023-11-21 22:22:13,930 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:22:13" (1/1) ... [2023-11-21 22:22:13,936 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-21 22:22:13,937 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-21 22:22:13,941 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-21 22:22:13,941 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-21 22:22:13,942 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:22:13" (1/1) ... [2023-11-21 22:22:13,950 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-21 22:22:13,975 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_717498c2-b4f6-4fa1-8058-92b22271e5ff/bin/uautomizer-verify-bycVGegfSx/z3 [2023-11-21 22:22:13,996 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_717498c2-b4f6-4fa1-8058-92b22271e5ff/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-21 22:22:13,999 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_717498c2-b4f6-4fa1-8058-92b22271e5ff/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-21 22:22:14,040 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2023-11-21 22:22:14,041 INFO L130 BoogieDeclarations]: Found specification of procedure LDV_INIT_LIST_HEAD [2023-11-21 22:22:14,041 INFO L138 BoogieDeclarations]: Found implementation of procedure LDV_INIT_LIST_HEAD [2023-11-21 22:22:14,041 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2023-11-21 22:22:14,041 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2023-11-21 22:22:14,042 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kobject_put [2023-11-21 22:22:14,042 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kobject_put [2023-11-21 22:22:14,042 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-21 22:22:14,042 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-21 22:22:14,043 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-11-21 22:22:14,043 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-11-21 22:22:14,043 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2023-11-21 22:22:14,043 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-21 22:22:14,044 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2023-11-21 22:22:14,044 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-21 22:22:14,044 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-21 22:22:14,314 INFO L240 CfgBuilder]: Building ICFG [2023-11-21 22:22:14,317 INFO L266 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-21 22:22:15,039 INFO L281 CfgBuilder]: Performing block encoding [2023-11-21 22:22:15,148 INFO L303 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-21 22:22:15,149 INFO L308 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-21 22:22:15,151 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 10:22:15 BoogieIcfgContainer [2023-11-21 22:22:15,151 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-21 22:22:15,154 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-21 22:22:15,154 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-21 22:22:15,159 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-21 22:22:15,159 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.11 10:22:12" (1/3) ... [2023-11-21 22:22:15,160 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@78f67b62 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 10:22:15, skipping insertion in model container [2023-11-21 22:22:15,160 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:22:13" (2/3) ... [2023-11-21 22:22:15,161 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@78f67b62 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 10:22:15, skipping insertion in model container [2023-11-21 22:22:15,161 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 10:22:15" (3/3) ... [2023-11-21 22:22:15,163 INFO L112 eAbstractionObserver]: Analyzing ICFG memleaks_test22_2-2.i [2023-11-21 22:22:15,187 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-21 22:22:15,187 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 25 error locations. [2023-11-21 22:22:15,244 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-21 22:22:15,250 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;@1d8e4a9e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-21 22:22:15,250 INFO L358 AbstractCegarLoop]: Starting to check reachability of 25 error locations. [2023-11-21 22:22:15,254 INFO L276 IsEmpty]: Start isEmpty. Operand has 71 states, 38 states have (on average 1.868421052631579) internal successors, (71), 64 states have internal predecessors, (71), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2023-11-21 22:22:15,263 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2023-11-21 22:22:15,263 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 22:22:15,264 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-11-21 22:22:15,264 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2023-11-21 22:22:15,271 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:22:15,271 INFO L85 PathProgramCache]: Analyzing trace with hash -1752369907, now seen corresponding path program 1 times [2023-11-21 22:22:15,286 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-21 22:22:15,287 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1790764982] [2023-11-21 22:22:15,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:22:15,288 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-21 22:22:15,289 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_717498c2-b4f6-4fa1-8058-92b22271e5ff/bin/uautomizer-verify-bycVGegfSx/mathsat [2023-11-21 22:22:15,292 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_717498c2-b4f6-4fa1-8058-92b22271e5ff/bin/uautomizer-verify-bycVGegfSx/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-21 22:22:15,321 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_717498c2-b4f6-4fa1-8058-92b22271e5ff/bin/uautomizer-verify-bycVGegfSx/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2023-11-21 22:22:15,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:22:15,457 INFO L262 TraceCheckSpWp]: Trace formula consists of 33 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-21 22:22:15,465 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 22:22:15,689 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 12 treesize of output 11 [2023-11-21 22:22:16,000 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 22:22:16,000 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-21 22:22:16,001 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-21 22:22:16,002 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1790764982] [2023-11-21 22:22:16,003 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1790764982] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:22:16,003 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 22:22:16,004 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-21 22:22:16,006 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [409775149] [2023-11-21 22:22:16,007 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:22:16,012 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-21 22:22:16,013 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-21 22:22:16,048 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-21 22:22:16,049 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-21 22:22:16,052 INFO L87 Difference]: Start difference. First operand has 71 states, 38 states have (on average 1.868421052631579) internal successors, (71), 64 states have internal predecessors, (71), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Second operand has 6 states, 4 states have (on average 1.25) internal successors, (5), 5 states have internal predecessors, (5), 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) [2023-11-21 22:22:16,650 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 22:22:16,650 INFO L93 Difference]: Finished difference Result 70 states and 78 transitions. [2023-11-21 22:22:16,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-21 22:22:16,653 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 4 states have (on average 1.25) internal successors, (5), 5 states have internal predecessors, (5), 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 7 [2023-11-21 22:22:16,654 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 22:22:16,664 INFO L225 Difference]: With dead ends: 70 [2023-11-21 22:22:16,664 INFO L226 Difference]: Without dead ends: 69 [2023-11-21 22:22:16,666 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-11-21 22:22:16,670 INFO L413 NwaCegarLoop]: 55 mSDtfsCounter, 20 mSDsluCounter, 144 mSDsCounter, 0 mSdLazyCounter, 166 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 199 SdHoareTripleChecker+Invalid, 166 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 166 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-21 22:22:16,672 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 199 Invalid, 166 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 166 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-21 22:22:16,693 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2023-11-21 22:22:16,714 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 69. [2023-11-21 22:22:16,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69 states, 38 states have (on average 1.8157894736842106) internal successors, (69), 62 states have internal predecessors, (69), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2023-11-21 22:22:16,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 77 transitions. [2023-11-21 22:22:16,720 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 77 transitions. Word has length 7 [2023-11-21 22:22:16,720 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 22:22:16,720 INFO L495 AbstractCegarLoop]: Abstraction has 69 states and 77 transitions. [2023-11-21 22:22:16,721 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 4 states have (on average 1.25) internal successors, (5), 5 states have internal predecessors, (5), 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) [2023-11-21 22:22:16,721 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 77 transitions. [2023-11-21 22:22:16,721 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2023-11-21 22:22:16,722 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 22:22:16,722 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 22:22:16,731 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_717498c2-b4f6-4fa1-8058-92b22271e5ff/bin/uautomizer-verify-bycVGegfSx/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2023-11-21 22:22:16,924 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_717498c2-b4f6-4fa1-8058-92b22271e5ff/bin/uautomizer-verify-bycVGegfSx/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-21 22:22:16,925 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2023-11-21 22:22:16,926 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:22:16,926 INFO L85 PathProgramCache]: Analyzing trace with hash 1511107780, now seen corresponding path program 1 times [2023-11-21 22:22:16,927 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-21 22:22:16,927 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2106508161] [2023-11-21 22:22:16,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:22:16,927 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-21 22:22:16,927 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_717498c2-b4f6-4fa1-8058-92b22271e5ff/bin/uautomizer-verify-bycVGegfSx/mathsat [2023-11-21 22:22:16,929 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_717498c2-b4f6-4fa1-8058-92b22271e5ff/bin/uautomizer-verify-bycVGegfSx/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-21 22:22:16,936 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_717498c2-b4f6-4fa1-8058-92b22271e5ff/bin/uautomizer-verify-bycVGegfSx/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2023-11-21 22:22:17,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:22:17,008 INFO L262 TraceCheckSpWp]: Trace formula consists of 34 conjuncts, 13 conjunts are in the unsatisfiable core [2023-11-21 22:22:17,011 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 22:22:17,088 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-11-21 22:22:17,108 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2023-11-21 22:22:17,352 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 22:22:17,352 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-21 22:22:17,352 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-21 22:22:17,353 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2106508161] [2023-11-21 22:22:17,353 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2106508161] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:22:17,353 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 22:22:17,354 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-21 22:22:17,354 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [442024714] [2023-11-21 22:22:17,354 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:22:17,355 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-21 22:22:17,355 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-21 22:22:17,356 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-21 22:22:17,357 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-21 22:22:17,357 INFO L87 Difference]: Start difference. First operand 69 states and 77 transitions. Second operand has 6 states, 4 states have (on average 1.5) internal successors, (6), 5 states have internal predecessors, (6), 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) [2023-11-21 22:22:17,910 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 22:22:17,910 INFO L93 Difference]: Finished difference Result 68 states and 76 transitions. [2023-11-21 22:22:17,911 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-21 22:22:17,911 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 4 states have (on average 1.5) internal successors, (6), 5 states have internal predecessors, (6), 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 8 [2023-11-21 22:22:17,912 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 22:22:17,913 INFO L225 Difference]: With dead ends: 68 [2023-11-21 22:22:17,913 INFO L226 Difference]: Without dead ends: 68 [2023-11-21 22:22:17,913 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-11-21 22:22:17,915 INFO L413 NwaCegarLoop]: 54 mSDtfsCounter, 17 mSDsluCounter, 163 mSDsCounter, 0 mSdLazyCounter, 140 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 217 SdHoareTripleChecker+Invalid, 140 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 140 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-21 22:22:17,916 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 217 Invalid, 140 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 140 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-21 22:22:17,917 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2023-11-21 22:22:17,922 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 68. [2023-11-21 22:22:17,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 68 states, 38 states have (on average 1.7894736842105263) internal successors, (68), 61 states have internal predecessors, (68), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2023-11-21 22:22:17,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 76 transitions. [2023-11-21 22:22:17,925 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 76 transitions. Word has length 8 [2023-11-21 22:22:17,925 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 22:22:17,926 INFO L495 AbstractCegarLoop]: Abstraction has 68 states and 76 transitions. [2023-11-21 22:22:17,926 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 4 states have (on average 1.5) internal successors, (6), 5 states have internal predecessors, (6), 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) [2023-11-21 22:22:17,926 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 76 transitions. [2023-11-21 22:22:17,926 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2023-11-21 22:22:17,927 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 22:22:17,927 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 22:22:17,937 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_717498c2-b4f6-4fa1-8058-92b22271e5ff/bin/uautomizer-verify-bycVGegfSx/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2023-11-21 22:22:18,129 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_717498c2-b4f6-4fa1-8058-92b22271e5ff/bin/uautomizer-verify-bycVGegfSx/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-21 22:22:18,130 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2023-11-21 22:22:18,130 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:22:18,130 INFO L85 PathProgramCache]: Analyzing trace with hash -400325805, now seen corresponding path program 1 times [2023-11-21 22:22:18,131 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-21 22:22:18,131 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [408555952] [2023-11-21 22:22:18,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:22:18,132 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-21 22:22:18,132 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_717498c2-b4f6-4fa1-8058-92b22271e5ff/bin/uautomizer-verify-bycVGegfSx/mathsat [2023-11-21 22:22:18,133 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_717498c2-b4f6-4fa1-8058-92b22271e5ff/bin/uautomizer-verify-bycVGegfSx/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-21 22:22:18,160 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_717498c2-b4f6-4fa1-8058-92b22271e5ff/bin/uautomizer-verify-bycVGegfSx/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2023-11-21 22:22:18,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:22:18,232 INFO L262 TraceCheckSpWp]: Trace formula consists of 49 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-21 22:22:18,234 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 22:22:18,306 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 22:22:18,307 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-21 22:22:18,307 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-21 22:22:18,307 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [408555952] [2023-11-21 22:22:18,307 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [408555952] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:22:18,308 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 22:22:18,308 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-21 22:22:18,308 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [377908192] [2023-11-21 22:22:18,308 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:22:18,309 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-21 22:22:18,309 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-21 22:22:18,310 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-21 22:22:18,310 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-21 22:22:18,310 INFO L87 Difference]: Start difference. First operand 68 states and 76 transitions. Second operand has 4 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 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) [2023-11-21 22:22:18,498 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 22:22:18,498 INFO L93 Difference]: Finished difference Result 77 states and 86 transitions. [2023-11-21 22:22:18,498 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-21 22:22:18,499 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 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 9 [2023-11-21 22:22:18,499 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 22:22:18,500 INFO L225 Difference]: With dead ends: 77 [2023-11-21 22:22:18,500 INFO L226 Difference]: Without dead ends: 77 [2023-11-21 22:22:18,501 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-21 22:22:18,502 INFO L413 NwaCegarLoop]: 61 mSDtfsCounter, 6 mSDsluCounter, 120 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 181 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-21 22:22:18,503 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 181 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-21 22:22:18,504 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2023-11-21 22:22:18,513 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 70. [2023-11-21 22:22:18,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 70 states, 40 states have (on average 1.75) internal successors, (70), 63 states have internal predecessors, (70), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2023-11-21 22:22:18,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 78 transitions. [2023-11-21 22:22:18,516 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 78 transitions. Word has length 9 [2023-11-21 22:22:18,516 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 22:22:18,516 INFO L495 AbstractCegarLoop]: Abstraction has 70 states and 78 transitions. [2023-11-21 22:22:18,516 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 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) [2023-11-21 22:22:18,517 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 78 transitions. [2023-11-21 22:22:18,517 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2023-11-21 22:22:18,517 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 22:22:18,518 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 22:22:18,536 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_717498c2-b4f6-4fa1-8058-92b22271e5ff/bin/uautomizer-verify-bycVGegfSx/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2023-11-21 22:22:18,727 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_717498c2-b4f6-4fa1-8058-92b22271e5ff/bin/uautomizer-verify-bycVGegfSx/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-21 22:22:18,727 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_kobject_putErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2023-11-21 22:22:18,728 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:22:18,728 INFO L85 PathProgramCache]: Analyzing trace with hash 1994677457, now seen corresponding path program 1 times [2023-11-21 22:22:18,728 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-21 22:22:18,729 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2108951761] [2023-11-21 22:22:18,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:22:18,729 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-21 22:22:18,729 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_717498c2-b4f6-4fa1-8058-92b22271e5ff/bin/uautomizer-verify-bycVGegfSx/mathsat [2023-11-21 22:22:18,730 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_717498c2-b4f6-4fa1-8058-92b22271e5ff/bin/uautomizer-verify-bycVGegfSx/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-21 22:22:18,735 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_717498c2-b4f6-4fa1-8058-92b22271e5ff/bin/uautomizer-verify-bycVGegfSx/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2023-11-21 22:22:18,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:22:18,821 INFO L262 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-21 22:22:18,824 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 22:22:18,923 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 22:22:18,923 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-21 22:22:18,923 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-21 22:22:18,924 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2108951761] [2023-11-21 22:22:18,924 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2108951761] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:22:18,924 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 22:22:18,924 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-21 22:22:18,925 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [251489272] [2023-11-21 22:22:18,925 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:22:18,926 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-21 22:22:18,926 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-21 22:22:18,928 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-21 22:22:18,929 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-21 22:22:18,929 INFO L87 Difference]: Start difference. First operand 70 states and 78 transitions. Second operand has 6 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 5 states have internal predecessors, (10), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-21 22:22:19,325 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 22:22:19,326 INFO L93 Difference]: Finished difference Result 82 states and 91 transitions. [2023-11-21 22:22:19,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-21 22:22:19,327 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 5 states have internal predecessors, (10), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 13 [2023-11-21 22:22:19,327 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 22:22:19,329 INFO L225 Difference]: With dead ends: 82 [2023-11-21 22:22:19,330 INFO L226 Difference]: Without dead ends: 82 [2023-11-21 22:22:19,330 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-11-21 22:22:19,331 INFO L413 NwaCegarLoop]: 58 mSDtfsCounter, 11 mSDsluCounter, 231 mSDsCounter, 0 mSdLazyCounter, 89 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 289 SdHoareTripleChecker+Invalid, 95 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 89 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-21 22:22:19,337 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 289 Invalid, 95 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 89 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-21 22:22:19,338 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2023-11-21 22:22:19,352 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 77. [2023-11-21 22:22:19,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 77 states, 44 states have (on average 1.6818181818181819) internal successors, (74), 68 states have internal predecessors, (74), 6 states have call successors, (6), 4 states have call predecessors, (6), 4 states have return successors, (6), 5 states have call predecessors, (6), 6 states have call successors, (6) [2023-11-21 22:22:19,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 86 transitions. [2023-11-21 22:22:19,354 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 86 transitions. Word has length 13 [2023-11-21 22:22:19,355 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 22:22:19,355 INFO L495 AbstractCegarLoop]: Abstraction has 77 states and 86 transitions. [2023-11-21 22:22:19,355 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 5 states have internal predecessors, (10), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-21 22:22:19,355 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 86 transitions. [2023-11-21 22:22:19,356 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2023-11-21 22:22:19,356 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 22:22:19,356 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 22:22:19,370 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_717498c2-b4f6-4fa1-8058-92b22271e5ff/bin/uautomizer-verify-bycVGegfSx/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2023-11-21 22:22:19,556 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_717498c2-b4f6-4fa1-8058-92b22271e5ff/bin/uautomizer-verify-bycVGegfSx/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-21 22:22:19,557 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2023-11-21 22:22:19,557 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:22:19,557 INFO L85 PathProgramCache]: Analyzing trace with hash 1819921358, now seen corresponding path program 1 times [2023-11-21 22:22:19,558 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-21 22:22:19,558 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1418305734] [2023-11-21 22:22:19,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:22:19,558 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-21 22:22:19,558 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_717498c2-b4f6-4fa1-8058-92b22271e5ff/bin/uautomizer-verify-bycVGegfSx/mathsat [2023-11-21 22:22:19,560 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_717498c2-b4f6-4fa1-8058-92b22271e5ff/bin/uautomizer-verify-bycVGegfSx/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-21 22:22:19,563 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_717498c2-b4f6-4fa1-8058-92b22271e5ff/bin/uautomizer-verify-bycVGegfSx/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2023-11-21 22:22:19,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:22:19,635 INFO L262 TraceCheckSpWp]: Trace formula consists of 56 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-21 22:22:19,637 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 22:22:19,677 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 22:22:19,678 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-21 22:22:19,678 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-21 22:22:19,678 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1418305734] [2023-11-21 22:22:19,678 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1418305734] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:22:19,679 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 22:22:19,679 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-21 22:22:19,679 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [677836442] [2023-11-21 22:22:19,679 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:22:19,680 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-21 22:22:19,680 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-21 22:22:19,681 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-21 22:22:19,681 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-21 22:22:19,682 INFO L87 Difference]: Start difference. First operand 77 states and 86 transitions. Second operand has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 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) [2023-11-21 22:22:19,854 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 22:22:19,854 INFO L93 Difference]: Finished difference Result 78 states and 87 transitions. [2023-11-21 22:22:19,859 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-21 22:22:19,860 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 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 12 [2023-11-21 22:22:19,860 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 22:22:19,861 INFO L225 Difference]: With dead ends: 78 [2023-11-21 22:22:19,861 INFO L226 Difference]: Without dead ends: 78 [2023-11-21 22:22:19,862 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-21 22:22:19,863 INFO L413 NwaCegarLoop]: 61 mSDtfsCounter, 2 mSDsluCounter, 119 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 180 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-21 22:22:19,864 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 180 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-21 22:22:19,865 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2023-11-21 22:22:19,872 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 78. [2023-11-21 22:22:19,873 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 78 states, 45 states have (on average 1.6666666666666667) internal successors, (75), 69 states have internal predecessors, (75), 6 states have call successors, (6), 4 states have call predecessors, (6), 4 states have return successors, (6), 5 states have call predecessors, (6), 6 states have call successors, (6) [2023-11-21 22:22:19,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 87 transitions. [2023-11-21 22:22:19,875 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 87 transitions. Word has length 12 [2023-11-21 22:22:19,875 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 22:22:19,875 INFO L495 AbstractCegarLoop]: Abstraction has 78 states and 87 transitions. [2023-11-21 22:22:19,876 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 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) [2023-11-21 22:22:19,876 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 87 transitions. [2023-11-21 22:22:19,876 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2023-11-21 22:22:19,877 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 22:22:19,877 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 22:22:19,880 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_717498c2-b4f6-4fa1-8058-92b22271e5ff/bin/uautomizer-verify-bycVGegfSx/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Ended with exit code 0 [2023-11-21 22:22:20,079 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_717498c2-b4f6-4fa1-8058-92b22271e5ff/bin/uautomizer-verify-bycVGegfSx/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-21 22:22:20,080 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2023-11-21 22:22:20,081 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:22:20,081 INFO L85 PathProgramCache]: Analyzing trace with hash 466529403, now seen corresponding path program 1 times [2023-11-21 22:22:20,081 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-21 22:22:20,081 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [852073367] [2023-11-21 22:22:20,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:22:20,082 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-21 22:22:20,082 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_717498c2-b4f6-4fa1-8058-92b22271e5ff/bin/uautomizer-verify-bycVGegfSx/mathsat [2023-11-21 22:22:20,083 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_717498c2-b4f6-4fa1-8058-92b22271e5ff/bin/uautomizer-verify-bycVGegfSx/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-21 22:22:20,085 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_717498c2-b4f6-4fa1-8058-92b22271e5ff/bin/uautomizer-verify-bycVGegfSx/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2023-11-21 22:22:20,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:22:20,179 INFO L262 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-21 22:22:20,181 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 22:22:20,233 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 22:22:20,233 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-21 22:22:20,303 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 22:22:20,304 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-21 22:22:20,304 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [852073367] [2023-11-21 22:22:20,304 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [852073367] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-21 22:22:20,304 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-21 22:22:20,304 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2023-11-21 22:22:20,305 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2019001268] [2023-11-21 22:22:20,305 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-21 22:22:20,305 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-21 22:22:20,306 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-21 22:22:20,307 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-21 22:22:20,307 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-11-21 22:22:20,307 INFO L87 Difference]: Start difference. First operand 78 states and 87 transitions. Second operand has 8 states, 8 states have (on average 2.0) internal successors, (16), 8 states have internal predecessors, (16), 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) [2023-11-21 22:22:20,701 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 22:22:20,701 INFO L93 Difference]: Finished difference Result 81 states and 90 transitions. [2023-11-21 22:22:20,704 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-21 22:22:20,704 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.0) internal successors, (16), 8 states have internal predecessors, (16), 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 13 [2023-11-21 22:22:20,704 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 22:22:20,705 INFO L225 Difference]: With dead ends: 81 [2023-11-21 22:22:20,705 INFO L226 Difference]: Without dead ends: 81 [2023-11-21 22:22:20,706 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2023-11-21 22:22:20,707 INFO L413 NwaCegarLoop]: 61 mSDtfsCounter, 4 mSDsluCounter, 299 mSDsCounter, 0 mSdLazyCounter, 91 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 360 SdHoareTripleChecker+Invalid, 92 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 91 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-21 22:22:20,708 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 360 Invalid, 92 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 91 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-21 22:22:20,709 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2023-11-21 22:22:20,715 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 81. [2023-11-21 22:22:20,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 81 states, 48 states have (on average 1.625) internal successors, (78), 72 states have internal predecessors, (78), 6 states have call successors, (6), 4 states have call predecessors, (6), 4 states have return successors, (6), 5 states have call predecessors, (6), 6 states have call successors, (6) [2023-11-21 22:22:20,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 90 transitions. [2023-11-21 22:22:20,718 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 90 transitions. Word has length 13 [2023-11-21 22:22:20,718 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 22:22:20,718 INFO L495 AbstractCegarLoop]: Abstraction has 81 states and 90 transitions. [2023-11-21 22:22:20,719 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.0) internal successors, (16), 8 states have internal predecessors, (16), 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) [2023-11-21 22:22:20,719 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 90 transitions. [2023-11-21 22:22:20,721 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2023-11-21 22:22:20,721 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 22:22:20,721 INFO L195 NwaCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 22:22:20,729 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_717498c2-b4f6-4fa1-8058-92b22271e5ff/bin/uautomizer-verify-bycVGegfSx/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2023-11-21 22:22:20,924 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_717498c2-b4f6-4fa1-8058-92b22271e5ff/bin/uautomizer-verify-bycVGegfSx/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-21 22:22:20,924 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2023-11-21 22:22:20,925 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:22:20,925 INFO L85 PathProgramCache]: Analyzing trace with hash 184749838, now seen corresponding path program 2 times [2023-11-21 22:22:20,925 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-21 22:22:20,926 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1394086296] [2023-11-21 22:22:20,926 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-21 22:22:20,926 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-21 22:22:20,926 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_717498c2-b4f6-4fa1-8058-92b22271e5ff/bin/uautomizer-verify-bycVGegfSx/mathsat [2023-11-21 22:22:20,927 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_717498c2-b4f6-4fa1-8058-92b22271e5ff/bin/uautomizer-verify-bycVGegfSx/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-21 22:22:20,929 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_717498c2-b4f6-4fa1-8058-92b22271e5ff/bin/uautomizer-verify-bycVGegfSx/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2023-11-21 22:22:21,026 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-11-21 22:22:21,026 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-21 22:22:21,029 INFO L262 TraceCheckSpWp]: Trace formula consists of 56 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-21 22:22:21,031 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 22:22:21,145 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-11-21 22:22:21,145 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-21 22:22:21,146 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-21 22:22:21,146 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1394086296] [2023-11-21 22:22:21,146 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1394086296] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:22:21,146 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 22:22:21,146 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-21 22:22:21,146 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1500735242] [2023-11-21 22:22:21,147 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:22:21,147 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-21 22:22:21,147 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-21 22:22:21,148 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-21 22:22:21,148 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-21 22:22:21,148 INFO L87 Difference]: Start difference. First operand 81 states and 90 transitions. Second operand has 7 states, 6 states have (on average 1.8333333333333333) internal successors, (11), 7 states have internal predecessors, (11), 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) [2023-11-21 22:22:21,671 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 22:22:21,671 INFO L93 Difference]: Finished difference Result 80 states and 89 transitions. [2023-11-21 22:22:21,672 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-21 22:22:21,672 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 1.8333333333333333) internal successors, (11), 7 states have internal predecessors, (11), 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 16 [2023-11-21 22:22:21,672 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 22:22:21,673 INFO L225 Difference]: With dead ends: 80 [2023-11-21 22:22:21,673 INFO L226 Difference]: Without dead ends: 80 [2023-11-21 22:22:21,673 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2023-11-21 22:22:21,674 INFO L413 NwaCegarLoop]: 54 mSDtfsCounter, 24 mSDsluCounter, 196 mSDsCounter, 0 mSdLazyCounter, 172 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 250 SdHoareTripleChecker+Invalid, 175 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 172 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-21 22:22:21,675 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [24 Valid, 250 Invalid, 175 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 172 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-21 22:22:21,676 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2023-11-21 22:22:21,689 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 80. [2023-11-21 22:22:21,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 80 states, 48 states have (on average 1.6041666666666667) internal successors, (77), 71 states have internal predecessors, (77), 6 states have call successors, (6), 4 states have call predecessors, (6), 4 states have return successors, (6), 5 states have call predecessors, (6), 6 states have call successors, (6) [2023-11-21 22:22:21,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 89 transitions. [2023-11-21 22:22:21,703 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 89 transitions. Word has length 16 [2023-11-21 22:22:21,703 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 22:22:21,704 INFO L495 AbstractCegarLoop]: Abstraction has 80 states and 89 transitions. [2023-11-21 22:22:21,704 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 1.8333333333333333) internal successors, (11), 7 states have internal predecessors, (11), 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) [2023-11-21 22:22:21,704 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 89 transitions. [2023-11-21 22:22:21,705 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2023-11-21 22:22:21,705 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 22:22:21,705 INFO L195 NwaCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 22:22:21,713 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_717498c2-b4f6-4fa1-8058-92b22271e5ff/bin/uautomizer-verify-bycVGegfSx/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2023-11-21 22:22:21,907 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_717498c2-b4f6-4fa1-8058-92b22271e5ff/bin/uautomizer-verify-bycVGegfSx/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-21 22:22:21,908 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2023-11-21 22:22:21,909 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:22:21,909 INFO L85 PathProgramCache]: Analyzing trace with hash 184749839, now seen corresponding path program 1 times [2023-11-21 22:22:21,909 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-21 22:22:21,910 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2065299666] [2023-11-21 22:22:21,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:22:21,910 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-21 22:22:21,910 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_717498c2-b4f6-4fa1-8058-92b22271e5ff/bin/uautomizer-verify-bycVGegfSx/mathsat [2023-11-21 22:22:21,911 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_717498c2-b4f6-4fa1-8058-92b22271e5ff/bin/uautomizer-verify-bycVGegfSx/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-21 22:22:21,914 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_717498c2-b4f6-4fa1-8058-92b22271e5ff/bin/uautomizer-verify-bycVGegfSx/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2023-11-21 22:22:22,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:22:22,021 INFO L262 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-21 22:22:22,023 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 22:22:22,149 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 22:22:22,149 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-21 22:22:22,365 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 22:22:22,365 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-21 22:22:22,365 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2065299666] [2023-11-21 22:22:22,366 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2065299666] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-21 22:22:22,366 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-21 22:22:22,366 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 14 [2023-11-21 22:22:22,366 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1616065692] [2023-11-21 22:22:22,366 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-21 22:22:22,366 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-11-21 22:22:22,367 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-21 22:22:22,367 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-11-21 22:22:22,368 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=121, Unknown=0, NotChecked=0, Total=182 [2023-11-21 22:22:22,368 INFO L87 Difference]: Start difference. First operand 80 states and 89 transitions. Second operand has 14 states, 14 states have (on average 1.5714285714285714) internal successors, (22), 14 states have internal predecessors, (22), 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) [2023-11-21 22:22:23,117 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 22:22:23,117 INFO L93 Difference]: Finished difference Result 86 states and 95 transitions. [2023-11-21 22:22:23,118 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-11-21 22:22:23,119 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 1.5714285714285714) internal successors, (22), 14 states have internal predecessors, (22), 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 16 [2023-11-21 22:22:23,119 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 22:22:23,120 INFO L225 Difference]: With dead ends: 86 [2023-11-21 22:22:23,120 INFO L226 Difference]: Without dead ends: 86 [2023-11-21 22:22:23,121 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=131, Invalid=211, Unknown=0, NotChecked=0, Total=342 [2023-11-21 22:22:23,122 INFO L413 NwaCegarLoop]: 60 mSDtfsCounter, 7 mSDsluCounter, 412 mSDsCounter, 0 mSdLazyCounter, 146 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 472 SdHoareTripleChecker+Invalid, 147 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 146 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-11-21 22:22:23,123 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 472 Invalid, 147 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 146 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-11-21 22:22:23,124 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2023-11-21 22:22:23,130 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 86. [2023-11-21 22:22:23,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 86 states, 54 states have (on average 1.537037037037037) internal successors, (83), 77 states have internal predecessors, (83), 6 states have call successors, (6), 4 states have call predecessors, (6), 4 states have return successors, (6), 5 states have call predecessors, (6), 6 states have call successors, (6) [2023-11-21 22:22:23,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 95 transitions. [2023-11-21 22:22:23,132 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 95 transitions. Word has length 16 [2023-11-21 22:22:23,133 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 22:22:23,133 INFO L495 AbstractCegarLoop]: Abstraction has 86 states and 95 transitions. [2023-11-21 22:22:23,133 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 1.5714285714285714) internal successors, (22), 14 states have internal predecessors, (22), 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) [2023-11-21 22:22:23,133 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 95 transitions. [2023-11-21 22:22:23,134 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2023-11-21 22:22:23,134 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 22:22:23,135 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 22:22:23,142 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_717498c2-b4f6-4fa1-8058-92b22271e5ff/bin/uautomizer-verify-bycVGegfSx/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2023-11-21 22:22:23,338 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_717498c2-b4f6-4fa1-8058-92b22271e5ff/bin/uautomizer-verify-bycVGegfSx/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-21 22:22:23,339 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2023-11-21 22:22:23,339 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:22:23,339 INFO L85 PathProgramCache]: Analyzing trace with hash 1790677551, now seen corresponding path program 1 times [2023-11-21 22:22:23,340 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-21 22:22:23,340 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1151112502] [2023-11-21 22:22:23,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:22:23,340 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-21 22:22:23,340 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_717498c2-b4f6-4fa1-8058-92b22271e5ff/bin/uautomizer-verify-bycVGegfSx/mathsat [2023-11-21 22:22:23,341 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_717498c2-b4f6-4fa1-8058-92b22271e5ff/bin/uautomizer-verify-bycVGegfSx/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-21 22:22:23,343 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_717498c2-b4f6-4fa1-8058-92b22271e5ff/bin/uautomizer-verify-bycVGegfSx/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2023-11-21 22:22:23,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:22:23,428 INFO L262 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 12 conjunts are in the unsatisfiable core [2023-11-21 22:22:23,435 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 22:22:23,737 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-21 22:22:23,738 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-21 22:22:23,738 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-21 22:22:23,738 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1151112502] [2023-11-21 22:22:23,738 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1151112502] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:22:23,738 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 22:22:23,738 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-21 22:22:23,739 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [947223953] [2023-11-21 22:22:23,739 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:22:23,739 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-21 22:22:23,739 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-21 22:22:23,740 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-21 22:22:23,740 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-21 22:22:23,740 INFO L87 Difference]: Start difference. First operand 86 states and 95 transitions. Second operand has 7 states, 5 states have (on average 2.4) internal successors, (12), 5 states have internal predecessors, (12), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2023-11-21 22:22:24,356 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 22:22:24,356 INFO L93 Difference]: Finished difference Result 91 states and 100 transitions. [2023-11-21 22:22:24,358 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-21 22:22:24,358 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 5 states have (on average 2.4) internal successors, (12), 5 states have internal predecessors, (12), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 21 [2023-11-21 22:22:24,358 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 22:22:24,359 INFO L225 Difference]: With dead ends: 91 [2023-11-21 22:22:24,359 INFO L226 Difference]: Without dead ends: 80 [2023-11-21 22:22:24,360 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2023-11-21 22:22:24,360 INFO L413 NwaCegarLoop]: 41 mSDtfsCounter, 39 mSDsluCounter, 135 mSDsCounter, 0 mSdLazyCounter, 224 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 176 SdHoareTripleChecker+Invalid, 227 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 224 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-11-21 22:22:24,361 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [40 Valid, 176 Invalid, 227 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 224 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-11-21 22:22:24,362 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2023-11-21 22:22:24,367 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 77. [2023-11-21 22:22:24,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 77 states, 48 states have (on average 1.5833333333333333) internal successors, (76), 70 states have internal predecessors, (76), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2023-11-21 22:22:24,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 84 transitions. [2023-11-21 22:22:24,369 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 84 transitions. Word has length 21 [2023-11-21 22:22:24,369 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 22:22:24,369 INFO L495 AbstractCegarLoop]: Abstraction has 77 states and 84 transitions. [2023-11-21 22:22:24,369 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 5 states have (on average 2.4) internal successors, (12), 5 states have internal predecessors, (12), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2023-11-21 22:22:24,369 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 84 transitions. [2023-11-21 22:22:24,370 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2023-11-21 22:22:24,370 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 22:22:24,370 INFO L195 NwaCegarLoop]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 22:22:24,389 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_717498c2-b4f6-4fa1-8058-92b22271e5ff/bin/uautomizer-verify-bycVGegfSx/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2023-11-21 22:22:24,590 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_717498c2-b4f6-4fa1-8058-92b22271e5ff/bin/uautomizer-verify-bycVGegfSx/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-21 22:22:24,590 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2023-11-21 22:22:24,591 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:22:24,591 INFO L85 PathProgramCache]: Analyzing trace with hash -952817681, now seen corresponding path program 2 times [2023-11-21 22:22:24,591 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-21 22:22:24,592 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [282831173] [2023-11-21 22:22:24,592 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-21 22:22:24,592 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 [2023-11-21 22:22:24,592 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_717498c2-b4f6-4fa1-8058-92b22271e5ff/bin/uautomizer-verify-bycVGegfSx/mathsat [2023-11-21 22:22:24,594 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_717498c2-b4f6-4fa1-8058-92b22271e5ff/bin/uautomizer-verify-bycVGegfSx/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-21 22:22:24,603 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_717498c2-b4f6-4fa1-8058-92b22271e5ff/bin/uautomizer-verify-bycVGegfSx/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2023-11-21 22:22:24,703 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-11-21 22:22:24,703 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-21 22:22:24,705 INFO L262 TraceCheckSpWp]: Trace formula consists of 56 conjuncts, 22 conjunts are in the unsatisfiable core [2023-11-21 22:22:24,713 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 22:22:24,759 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-11-21 22:22:24,784 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2023-11-21 22:22:25,387 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-11-21 22:22:25,387 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-21 22:22:25,387 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-21 22:22:25,387 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [282831173] [2023-11-21 22:22:25,387 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [282831173] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:22:25,387 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 22:22:25,387 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-21 22:22:25,388 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1056684638] [2023-11-21 22:22:25,388 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:22:25,388 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-21 22:22:25,388 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-21 22:22:25,389 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-21 22:22:25,389 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2023-11-21 22:22:25,389 INFO L87 Difference]: Start difference. First operand 77 states and 84 transitions. Second operand has 9 states, 7 states have (on average 1.5714285714285714) internal successors, (11), 8 states have internal predecessors, (11), 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) [2023-11-21 22:22:26,296 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 22:22:26,297 INFO L93 Difference]: Finished difference Result 76 states and 81 transitions. [2023-11-21 22:22:26,304 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-21 22:22:26,304 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 7 states have (on average 1.5714285714285714) internal successors, (11), 8 states have internal predecessors, (11), 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 22 [2023-11-21 22:22:26,305 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 22:22:26,306 INFO L225 Difference]: With dead ends: 76 [2023-11-21 22:22:26,306 INFO L226 Difference]: Without dead ends: 76 [2023-11-21 22:22:26,306 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2023-11-21 22:22:26,307 INFO L413 NwaCegarLoop]: 51 mSDtfsCounter, 12 mSDsluCounter, 271 mSDsCounter, 0 mSdLazyCounter, 210 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 322 SdHoareTripleChecker+Invalid, 215 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 210 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-11-21 22:22:26,307 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 322 Invalid, 215 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 210 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-11-21 22:22:26,308 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2023-11-21 22:22:26,313 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 76. [2023-11-21 22:22:26,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 76 states, 48 states have (on average 1.5208333333333333) internal successors, (73), 68 states have internal predecessors, (73), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2023-11-21 22:22:26,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 81 transitions. [2023-11-21 22:22:26,315 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 81 transitions. Word has length 22 [2023-11-21 22:22:26,315 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 22:22:26,315 INFO L495 AbstractCegarLoop]: Abstraction has 76 states and 81 transitions. [2023-11-21 22:22:26,315 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 7 states have (on average 1.5714285714285714) internal successors, (11), 8 states have internal predecessors, (11), 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) [2023-11-21 22:22:26,316 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 81 transitions. [2023-11-21 22:22:26,316 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2023-11-21 22:22:26,317 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 22:22:26,317 INFO L195 NwaCegarLoop]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 22:22:26,320 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_717498c2-b4f6-4fa1-8058-92b22271e5ff/bin/uautomizer-verify-bycVGegfSx/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2023-11-21 22:22:26,519 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_717498c2-b4f6-4fa1-8058-92b22271e5ff/bin/uautomizer-verify-bycVGegfSx/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-21 22:22:26,520 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting LDV_INIT_LIST_HEADErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2023-11-21 22:22:26,520 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:22:26,520 INFO L85 PathProgramCache]: Analyzing trace with hash 50951086, now seen corresponding path program 1 times [2023-11-21 22:22:26,521 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-21 22:22:26,521 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [382144727] [2023-11-21 22:22:26,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:22:26,522 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-21 22:22:26,522 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_717498c2-b4f6-4fa1-8058-92b22271e5ff/bin/uautomizer-verify-bycVGegfSx/mathsat [2023-11-21 22:22:26,523 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_717498c2-b4f6-4fa1-8058-92b22271e5ff/bin/uautomizer-verify-bycVGegfSx/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-21 22:22:26,524 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_717498c2-b4f6-4fa1-8058-92b22271e5ff/bin/uautomizer-verify-bycVGegfSx/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2023-11-21 22:22:26,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:22:26,702 INFO L262 TraceCheckSpWp]: Trace formula consists of 198 conjuncts, 13 conjunts are in the unsatisfiable core [2023-11-21 22:22:26,705 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 22:22:27,005 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 22:22:27,005 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-21 22:22:27,637 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 22:22:27,637 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-21 22:22:27,637 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [382144727] [2023-11-21 22:22:27,638 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [382144727] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-21 22:22:27,638 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-21 22:22:27,638 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 26 [2023-11-21 22:22:27,638 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1531707020] [2023-11-21 22:22:27,638 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-21 22:22:27,639 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2023-11-21 22:22:27,639 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-21 22:22:27,640 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2023-11-21 22:22:27,641 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=178, Invalid=472, Unknown=0, NotChecked=0, Total=650 [2023-11-21 22:22:27,641 INFO L87 Difference]: Start difference. First operand 76 states and 81 transitions. Second operand has 26 states, 26 states have (on average 1.3846153846153846) internal successors, (36), 26 states have internal predecessors, (36), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-21 22:22:28,966 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 22:22:28,967 INFO L93 Difference]: Finished difference Result 82 states and 87 transitions. [2023-11-21 22:22:28,967 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-11-21 22:22:28,967 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 1.3846153846153846) internal successors, (36), 26 states have internal predecessors, (36), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 25 [2023-11-21 22:22:28,968 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 22:22:28,969 INFO L225 Difference]: With dead ends: 82 [2023-11-21 22:22:28,969 INFO L226 Difference]: Without dead ends: 82 [2023-11-21 22:22:28,969 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 193 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=278, Invalid=652, Unknown=0, NotChecked=0, Total=930 [2023-11-21 22:22:28,970 INFO L413 NwaCegarLoop]: 56 mSDtfsCounter, 14 mSDsluCounter, 659 mSDsCounter, 0 mSdLazyCounter, 302 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 715 SdHoareTripleChecker+Invalid, 302 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 302 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-11-21 22:22:28,971 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 715 Invalid, 302 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 302 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-11-21 22:22:28,972 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2023-11-21 22:22:28,975 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 82. [2023-11-21 22:22:28,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 82 states, 54 states have (on average 1.462962962962963) internal successors, (79), 74 states have internal predecessors, (79), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2023-11-21 22:22:28,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 87 transitions. [2023-11-21 22:22:28,977 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 87 transitions. Word has length 25 [2023-11-21 22:22:28,977 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 22:22:28,977 INFO L495 AbstractCegarLoop]: Abstraction has 82 states and 87 transitions. [2023-11-21 22:22:28,977 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 1.3846153846153846) internal successors, (36), 26 states have internal predecessors, (36), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-21 22:22:28,978 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 87 transitions. [2023-11-21 22:22:28,979 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2023-11-21 22:22:28,979 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 22:22:28,979 INFO L195 NwaCegarLoop]: trace histogram [16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 22:22:29,008 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_717498c2-b4f6-4fa1-8058-92b22271e5ff/bin/uautomizer-verify-bycVGegfSx/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2023-11-21 22:22:29,208 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_717498c2-b4f6-4fa1-8058-92b22271e5ff/bin/uautomizer-verify-bycVGegfSx/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-21 22:22:29,208 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting LDV_INIT_LIST_HEADErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2023-11-21 22:22:29,209 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:22:29,209 INFO L85 PathProgramCache]: Analyzing trace with hash -2114627890, now seen corresponding path program 2 times [2023-11-21 22:22:29,209 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-21 22:22:29,210 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1175325834] [2023-11-21 22:22:29,210 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-21 22:22:29,210 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-21 22:22:29,210 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_717498c2-b4f6-4fa1-8058-92b22271e5ff/bin/uautomizer-verify-bycVGegfSx/mathsat [2023-11-21 22:22:29,211 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_717498c2-b4f6-4fa1-8058-92b22271e5ff/bin/uautomizer-verify-bycVGegfSx/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-21 22:22:29,212 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_717498c2-b4f6-4fa1-8058-92b22271e5ff/bin/uautomizer-verify-bycVGegfSx/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2023-11-21 22:22:29,347 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-11-21 22:22:29,347 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-21 22:22:29,351 INFO L262 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-21 22:22:29,354 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 22:22:29,530 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2023-11-21 22:22:29,531 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-21 22:22:29,531 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-21 22:22:29,531 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1175325834] [2023-11-21 22:22:29,531 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1175325834] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:22:29,531 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 22:22:29,531 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-21 22:22:29,531 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1656512811] [2023-11-21 22:22:29,532 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:22:29,532 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-21 22:22:29,532 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-21 22:22:29,533 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-21 22:22:29,533 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2023-11-21 22:22:29,533 INFO L87 Difference]: Start difference. First operand 82 states and 87 transitions. Second operand has 8 states, 7 states have (on average 1.8571428571428572) internal successors, (13), 7 states have internal predecessors, (13), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-21 22:22:30,089 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 22:22:30,089 INFO L93 Difference]: Finished difference Result 80 states and 85 transitions. [2023-11-21 22:22:30,090 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-21 22:22:30,090 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 1.8571428571428572) internal successors, (13), 7 states have internal predecessors, (13), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 31 [2023-11-21 22:22:30,090 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 22:22:30,091 INFO L225 Difference]: With dead ends: 80 [2023-11-21 22:22:30,091 INFO L226 Difference]: Without dead ends: 80 [2023-11-21 22:22:30,092 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2023-11-21 22:22:30,092 INFO L413 NwaCegarLoop]: 45 mSDtfsCounter, 22 mSDsluCounter, 206 mSDsCounter, 0 mSdLazyCounter, 197 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 251 SdHoareTripleChecker+Invalid, 201 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 197 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-21 22:22:30,093 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 251 Invalid, 201 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 197 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-21 22:22:30,094 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2023-11-21 22:22:30,102 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 80. [2023-11-21 22:22:30,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 80 states, 54 states have (on average 1.4259259259259258) internal successors, (77), 72 states have internal predecessors, (77), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2023-11-21 22:22:30,106 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 85 transitions. [2023-11-21 22:22:30,106 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 85 transitions. Word has length 31 [2023-11-21 22:22:30,109 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 22:22:30,109 INFO L495 AbstractCegarLoop]: Abstraction has 80 states and 85 transitions. [2023-11-21 22:22:30,109 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 1.8571428571428572) internal successors, (13), 7 states have internal predecessors, (13), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-21 22:22:30,109 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 85 transitions. [2023-11-21 22:22:30,110 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2023-11-21 22:22:30,112 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 22:22:30,112 INFO L195 NwaCegarLoop]: trace histogram [16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 22:22:30,115 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_717498c2-b4f6-4fa1-8058-92b22271e5ff/bin/uautomizer-verify-bycVGegfSx/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2023-11-21 22:22:30,315 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_717498c2-b4f6-4fa1-8058-92b22271e5ff/bin/uautomizer-verify-bycVGegfSx/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-21 22:22:30,315 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting LDV_INIT_LIST_HEADErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2023-11-21 22:22:30,316 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:22:30,316 INFO L85 PathProgramCache]: Analyzing trace with hash -2114627889, now seen corresponding path program 1 times [2023-11-21 22:22:30,316 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-21 22:22:30,317 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1839684274] [2023-11-21 22:22:30,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:22:30,317 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-21 22:22:30,317 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_717498c2-b4f6-4fa1-8058-92b22271e5ff/bin/uautomizer-verify-bycVGegfSx/mathsat [2023-11-21 22:22:30,319 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_717498c2-b4f6-4fa1-8058-92b22271e5ff/bin/uautomizer-verify-bycVGegfSx/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-21 22:22:30,336 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_717498c2-b4f6-4fa1-8058-92b22271e5ff/bin/uautomizer-verify-bycVGegfSx/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2023-11-21 22:22:30,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:22:30,583 INFO L262 TraceCheckSpWp]: Trace formula consists of 264 conjuncts, 25 conjunts are in the unsatisfiable core [2023-11-21 22:22:30,587 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 22:22:30,630 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2023-11-21 22:22:30,640 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-11-21 22:22:31,259 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2023-11-21 22:22:31,259 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-21 22:22:31,259 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-21 22:22:31,259 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1839684274] [2023-11-21 22:22:31,259 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1839684274] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:22:31,259 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 22:22:31,259 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-11-21 22:22:31,260 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1604128936] [2023-11-21 22:22:31,260 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:22:31,260 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-21 22:22:31,260 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-21 22:22:31,261 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-21 22:22:31,261 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2023-11-21 22:22:31,261 INFO L87 Difference]: Start difference. First operand 80 states and 85 transitions. Second operand has 10 states, 8 states have (on average 1.625) internal successors, (13), 8 states have internal predecessors, (13), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-21 22:22:31,955 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 22:22:31,955 INFO L93 Difference]: Finished difference Result 78 states and 83 transitions. [2023-11-21 22:22:31,956 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-21 22:22:31,956 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 8 states have (on average 1.625) internal successors, (13), 8 states have internal predecessors, (13), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 31 [2023-11-21 22:22:31,956 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 22:22:31,957 INFO L225 Difference]: With dead ends: 78 [2023-11-21 22:22:31,957 INFO L226 Difference]: Without dead ends: 78 [2023-11-21 22:22:31,958 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2023-11-21 22:22:31,958 INFO L413 NwaCegarLoop]: 44 mSDtfsCounter, 21 mSDsluCounter, 254 mSDsCounter, 0 mSdLazyCounter, 208 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 298 SdHoareTripleChecker+Invalid, 213 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 208 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-21 22:22:31,959 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 298 Invalid, 213 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 208 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-21 22:22:31,960 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2023-11-21 22:22:31,962 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 78. [2023-11-21 22:22:31,963 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 78 states, 54 states have (on average 1.3888888888888888) internal successors, (75), 70 states have internal predecessors, (75), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2023-11-21 22:22:31,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 83 transitions. [2023-11-21 22:22:31,964 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 83 transitions. Word has length 31 [2023-11-21 22:22:31,964 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 22:22:31,964 INFO L495 AbstractCegarLoop]: Abstraction has 78 states and 83 transitions. [2023-11-21 22:22:31,964 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 8 states have (on average 1.625) internal successors, (13), 8 states have internal predecessors, (13), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-21 22:22:31,965 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 83 transitions. [2023-11-21 22:22:31,966 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2023-11-21 22:22:31,966 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 22:22:31,966 INFO L195 NwaCegarLoop]: trace histogram [16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 22:22:31,976 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_717498c2-b4f6-4fa1-8058-92b22271e5ff/bin/uautomizer-verify-bycVGegfSx/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (14)] Ended with exit code 0 [2023-11-21 22:22:32,170 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_717498c2-b4f6-4fa1-8058-92b22271e5ff/bin/uautomizer-verify-bycVGegfSx/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-21 22:22:32,171 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2023-11-21 22:22:32,171 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:22:32,171 INFO L85 PathProgramCache]: Analyzing trace with hash -104002094, now seen corresponding path program 1 times [2023-11-21 22:22:32,172 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-21 22:22:32,172 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [371901073] [2023-11-21 22:22:32,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:22:32,172 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-21 22:22:32,172 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_717498c2-b4f6-4fa1-8058-92b22271e5ff/bin/uautomizer-verify-bycVGegfSx/mathsat [2023-11-21 22:22:32,174 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_717498c2-b4f6-4fa1-8058-92b22271e5ff/bin/uautomizer-verify-bycVGegfSx/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-21 22:22:32,175 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_717498c2-b4f6-4fa1-8058-92b22271e5ff/bin/uautomizer-verify-bycVGegfSx/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2023-11-21 22:22:32,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:22:32,382 INFO L262 TraceCheckSpWp]: Trace formula consists of 311 conjuncts, 11 conjunts are in the unsatisfiable core [2023-11-21 22:22:32,385 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 22:22:32,558 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2023-11-21 22:22:32,558 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-21 22:22:32,558 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-21 22:22:32,558 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [371901073] [2023-11-21 22:22:32,558 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [371901073] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:22:32,559 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 22:22:32,559 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-21 22:22:32,559 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1302395449] [2023-11-21 22:22:32,559 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:22:32,560 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-21 22:22:32,560 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-21 22:22:32,560 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-21 22:22:32,561 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-11-21 22:22:32,561 INFO L87 Difference]: Start difference. First operand 78 states and 83 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 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) [2023-11-21 22:22:33,104 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 22:22:33,104 INFO L93 Difference]: Finished difference Result 88 states and 96 transitions. [2023-11-21 22:22:33,104 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-21 22:22:33,105 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 38 [2023-11-21 22:22:33,105 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 22:22:33,106 INFO L225 Difference]: With dead ends: 88 [2023-11-21 22:22:33,106 INFO L226 Difference]: Without dead ends: 88 [2023-11-21 22:22:33,106 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 30 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=44, Invalid=112, Unknown=0, NotChecked=0, Total=156 [2023-11-21 22:22:33,107 INFO L413 NwaCegarLoop]: 38 mSDtfsCounter, 52 mSDsluCounter, 135 mSDsCounter, 0 mSdLazyCounter, 185 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 52 SdHoareTripleChecker+Valid, 173 SdHoareTripleChecker+Invalid, 191 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 185 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-21 22:22:33,107 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [52 Valid, 173 Invalid, 191 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 185 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-21 22:22:33,108 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2023-11-21 22:22:33,110 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 76. [2023-11-21 22:22:33,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 76 states, 54 states have (on average 1.3518518518518519) internal successors, (73), 68 states have internal predecessors, (73), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2023-11-21 22:22:33,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 81 transitions. [2023-11-21 22:22:33,111 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 81 transitions. Word has length 38 [2023-11-21 22:22:33,114 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 22:22:33,114 INFO L495 AbstractCegarLoop]: Abstraction has 76 states and 81 transitions. [2023-11-21 22:22:33,114 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 8 states have internal predecessors, (19), 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) [2023-11-21 22:22:33,114 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 81 transitions. [2023-11-21 22:22:33,119 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2023-11-21 22:22:33,121 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 22:22:33,121 INFO L195 NwaCegarLoop]: trace histogram [16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 22:22:33,132 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_717498c2-b4f6-4fa1-8058-92b22271e5ff/bin/uautomizer-verify-bycVGegfSx/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2023-11-21 22:22:33,322 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_717498c2-b4f6-4fa1-8058-92b22271e5ff/bin/uautomizer-verify-bycVGegfSx/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-21 22:22:33,322 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2023-11-21 22:22:33,323 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:22:33,323 INFO L85 PathProgramCache]: Analyzing trace with hash -104002093, now seen corresponding path program 1 times [2023-11-21 22:22:33,323 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-21 22:22:33,323 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [456860770] [2023-11-21 22:22:33,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:22:33,324 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-21 22:22:33,324 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_717498c2-b4f6-4fa1-8058-92b22271e5ff/bin/uautomizer-verify-bycVGegfSx/mathsat [2023-11-21 22:22:33,325 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_717498c2-b4f6-4fa1-8058-92b22271e5ff/bin/uautomizer-verify-bycVGegfSx/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-21 22:22:33,356 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_717498c2-b4f6-4fa1-8058-92b22271e5ff/bin/uautomizer-verify-bycVGegfSx/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2023-11-21 22:22:33,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:22:33,586 INFO L262 TraceCheckSpWp]: Trace formula consists of 311 conjuncts, 35 conjunts are in the unsatisfiable core [2023-11-21 22:22:33,590 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 22:22:33,623 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2023-11-21 22:22:33,629 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-11-21 22:22:34,370 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2023-11-21 22:22:34,370 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-21 22:22:34,371 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-21 22:22:34,371 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [456860770] [2023-11-21 22:22:34,371 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [456860770] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:22:34,371 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 22:22:34,371 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-11-21 22:22:34,372 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2092155257] [2023-11-21 22:22:34,372 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:22:34,372 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-21 22:22:34,372 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-21 22:22:34,373 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-21 22:22:34,373 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2023-11-21 22:22:34,373 INFO L87 Difference]: Start difference. First operand 76 states and 81 transitions. Second operand has 12 states, 10 states have (on average 1.9) internal successors, (19), 11 states have internal predecessors, (19), 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) [2023-11-21 22:22:35,168 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 22:22:35,168 INFO L93 Difference]: Finished difference Result 74 states and 78 transitions. [2023-11-21 22:22:35,169 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-11-21 22:22:35,169 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 10 states have (on average 1.9) internal successors, (19), 11 states have internal predecessors, (19), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 38 [2023-11-21 22:22:35,170 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 22:22:35,170 INFO L225 Difference]: With dead ends: 74 [2023-11-21 22:22:35,170 INFO L226 Difference]: Without dead ends: 74 [2023-11-21 22:22:35,171 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 26 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2023-11-21 22:22:35,171 INFO L413 NwaCegarLoop]: 33 mSDtfsCounter, 54 mSDsluCounter, 253 mSDsCounter, 0 mSdLazyCounter, 273 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56 SdHoareTripleChecker+Valid, 286 SdHoareTripleChecker+Invalid, 279 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 273 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-11-21 22:22:35,172 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [56 Valid, 286 Invalid, 279 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 273 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-11-21 22:22:35,172 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2023-11-21 22:22:35,174 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 74. [2023-11-21 22:22:35,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74 states, 54 states have (on average 1.2962962962962963) internal successors, (70), 66 states have internal predecessors, (70), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2023-11-21 22:22:35,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 78 transitions. [2023-11-21 22:22:35,175 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 78 transitions. Word has length 38 [2023-11-21 22:22:35,175 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 22:22:35,176 INFO L495 AbstractCegarLoop]: Abstraction has 74 states and 78 transitions. [2023-11-21 22:22:35,176 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 10 states have (on average 1.9) internal successors, (19), 11 states have internal predecessors, (19), 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) [2023-11-21 22:22:35,176 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 78 transitions. [2023-11-21 22:22:35,177 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2023-11-21 22:22:35,177 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 22:22:35,177 INFO L195 NwaCegarLoop]: trace histogram [16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 22:22:35,186 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_717498c2-b4f6-4fa1-8058-92b22271e5ff/bin/uautomizer-verify-bycVGegfSx/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2023-11-21 22:22:35,377 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_717498c2-b4f6-4fa1-8058-92b22271e5ff/bin/uautomizer-verify-bycVGegfSx/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-21 22:22:35,378 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ldv_kobject_putErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2023-11-21 22:22:35,378 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:22:35,378 INFO L85 PathProgramCache]: Analyzing trace with hash 495824736, now seen corresponding path program 1 times [2023-11-21 22:22:35,378 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-21 22:22:35,379 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2120298394] [2023-11-21 22:22:35,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:22:35,379 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-21 22:22:35,379 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_717498c2-b4f6-4fa1-8058-92b22271e5ff/bin/uautomizer-verify-bycVGegfSx/mathsat [2023-11-21 22:22:35,380 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_717498c2-b4f6-4fa1-8058-92b22271e5ff/bin/uautomizer-verify-bycVGegfSx/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-21 22:22:35,381 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_717498c2-b4f6-4fa1-8058-92b22271e5ff/bin/uautomizer-verify-bycVGegfSx/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2023-11-21 22:22:35,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:22:35,682 INFO L262 TraceCheckSpWp]: Trace formula consists of 378 conjuncts, 15 conjunts are in the unsatisfiable core [2023-11-21 22:22:35,685 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 22:22:35,875 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2023-11-21 22:22:35,875 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-21 22:22:35,875 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-21 22:22:35,875 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2120298394] [2023-11-21 22:22:35,875 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2120298394] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:22:35,875 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 22:22:35,876 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-11-21 22:22:35,876 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [907149764] [2023-11-21 22:22:35,876 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:22:35,876 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-21 22:22:35,876 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-21 22:22:35,877 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-21 22:22:35,877 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2023-11-21 22:22:35,877 INFO L87 Difference]: Start difference. First operand 74 states and 78 transitions. Second operand has 10 states, 9 states have (on average 2.6666666666666665) internal successors, (24), 9 states have internal predecessors, (24), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-21 22:22:36,491 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 22:22:36,491 INFO L93 Difference]: Finished difference Result 100 states and 107 transitions. [2023-11-21 22:22:36,492 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-11-21 22:22:36,492 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.6666666666666665) internal successors, (24), 9 states have internal predecessors, (24), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 44 [2023-11-21 22:22:36,493 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 22:22:36,493 INFO L225 Difference]: With dead ends: 100 [2023-11-21 22:22:36,493 INFO L226 Difference]: Without dead ends: 100 [2023-11-21 22:22:36,494 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 34 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=55, Invalid=185, Unknown=0, NotChecked=0, Total=240 [2023-11-21 22:22:36,494 INFO L413 NwaCegarLoop]: 32 mSDtfsCounter, 69 mSDsluCounter, 171 mSDsCounter, 0 mSdLazyCounter, 282 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 69 SdHoareTripleChecker+Valid, 203 SdHoareTripleChecker+Invalid, 292 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 282 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-21 22:22:36,495 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [69 Valid, 203 Invalid, 292 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 282 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-21 22:22:36,496 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2023-11-21 22:22:36,501 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 85. [2023-11-21 22:22:36,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 85 states, 63 states have (on average 1.3015873015873016) internal successors, (82), 75 states have internal predecessors, (82), 5 states have call successors, (5), 4 states have call predecessors, (5), 5 states have return successors, (8), 5 states have call predecessors, (8), 5 states have call successors, (8) [2023-11-21 22:22:36,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 95 transitions. [2023-11-21 22:22:36,503 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 95 transitions. Word has length 44 [2023-11-21 22:22:36,504 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 22:22:36,504 INFO L495 AbstractCegarLoop]: Abstraction has 85 states and 95 transitions. [2023-11-21 22:22:36,505 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 2.6666666666666665) internal successors, (24), 9 states have internal predecessors, (24), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-21 22:22:36,505 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 95 transitions. [2023-11-21 22:22:36,507 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2023-11-21 22:22:36,508 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 22:22:36,508 INFO L195 NwaCegarLoop]: trace histogram [16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 22:22:36,515 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_717498c2-b4f6-4fa1-8058-92b22271e5ff/bin/uautomizer-verify-bycVGegfSx/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2023-11-21 22:22:36,712 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_717498c2-b4f6-4fa1-8058-92b22271e5ff/bin/uautomizer-verify-bycVGegfSx/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-21 22:22:36,712 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ldv_kobject_putErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2023-11-21 22:22:36,712 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:22:36,712 INFO L85 PathProgramCache]: Analyzing trace with hash 495824737, now seen corresponding path program 1 times [2023-11-21 22:22:36,713 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-21 22:22:36,713 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [198081989] [2023-11-21 22:22:36,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:22:36,713 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-21 22:22:36,714 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_717498c2-b4f6-4fa1-8058-92b22271e5ff/bin/uautomizer-verify-bycVGegfSx/mathsat [2023-11-21 22:22:36,715 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_717498c2-b4f6-4fa1-8058-92b22271e5ff/bin/uautomizer-verify-bycVGegfSx/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-21 22:22:36,717 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_717498c2-b4f6-4fa1-8058-92b22271e5ff/bin/uautomizer-verify-bycVGegfSx/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2023-11-21 22:22:36,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:22:36,991 INFO L262 TraceCheckSpWp]: Trace formula consists of 378 conjuncts, 31 conjunts are in the unsatisfiable core [2023-11-21 22:22:36,994 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 22:22:37,046 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2023-11-21 22:22:37,056 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-11-21 22:22:37,885 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2023-11-21 22:22:37,885 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-21 22:22:37,885 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-21 22:22:37,885 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [198081989] [2023-11-21 22:22:37,885 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [198081989] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:22:37,886 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 22:22:37,886 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-11-21 22:22:37,886 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1552367379] [2023-11-21 22:22:37,886 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:22:37,886 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-21 22:22:37,886 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-21 22:22:37,887 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-21 22:22:37,887 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2023-11-21 22:22:37,887 INFO L87 Difference]: Start difference. First operand 85 states and 95 transitions. Second operand has 12 states, 10 states have (on average 2.4) internal successors, (24), 10 states have internal predecessors, (24), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-21 22:22:38,686 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 22:22:38,687 INFO L93 Difference]: Finished difference Result 83 states and 89 transitions. [2023-11-21 22:22:38,687 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-11-21 22:22:38,687 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 10 states have (on average 2.4) internal successors, (24), 10 states have internal predecessors, (24), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 44 [2023-11-21 22:22:38,688 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 22:22:38,688 INFO L225 Difference]: With dead ends: 83 [2023-11-21 22:22:38,689 INFO L226 Difference]: Without dead ends: 83 [2023-11-21 22:22:38,689 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 32 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=51, Invalid=189, Unknown=0, NotChecked=0, Total=240 [2023-11-21 22:22:38,690 INFO L413 NwaCegarLoop]: 31 mSDtfsCounter, 64 mSDsluCounter, 174 mSDsCounter, 0 mSdLazyCounter, 232 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 64 SdHoareTripleChecker+Valid, 205 SdHoareTripleChecker+Invalid, 239 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 232 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-11-21 22:22:38,690 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [64 Valid, 205 Invalid, 239 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 232 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-11-21 22:22:38,690 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2023-11-21 22:22:38,693 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 83. [2023-11-21 22:22:38,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 83 states, 63 states have (on average 1.2063492063492063) internal successors, (76), 73 states have internal predecessors, (76), 5 states have call successors, (5), 4 states have call predecessors, (5), 5 states have return successors, (8), 5 states have call predecessors, (8), 5 states have call successors, (8) [2023-11-21 22:22:38,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 89 transitions. [2023-11-21 22:22:38,695 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 89 transitions. Word has length 44 [2023-11-21 22:22:38,695 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 22:22:38,695 INFO L495 AbstractCegarLoop]: Abstraction has 83 states and 89 transitions. [2023-11-21 22:22:38,695 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 10 states have (on average 2.4) internal successors, (24), 10 states have internal predecessors, (24), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-21 22:22:38,695 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 89 transitions. [2023-11-21 22:22:38,696 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2023-11-21 22:22:38,696 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 22:22:38,696 INFO L195 NwaCegarLoop]: trace histogram [16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 22:22:38,708 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_717498c2-b4f6-4fa1-8058-92b22271e5ff/bin/uautomizer-verify-bycVGegfSx/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (18)] Forceful destruction successful, exit code 0 [2023-11-21 22:22:38,902 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_717498c2-b4f6-4fa1-8058-92b22271e5ff/bin/uautomizer-verify-bycVGegfSx/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-21 22:22:38,903 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ldv_kobject_putErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2023-11-21 22:22:38,903 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:22:38,903 INFO L85 PathProgramCache]: Analyzing trace with hash 724514909, now seen corresponding path program 1 times [2023-11-21 22:22:38,903 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-21 22:22:38,904 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2117597409] [2023-11-21 22:22:38,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:22:38,904 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-21 22:22:38,904 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_717498c2-b4f6-4fa1-8058-92b22271e5ff/bin/uautomizer-verify-bycVGegfSx/mathsat [2023-11-21 22:22:38,905 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_717498c2-b4f6-4fa1-8058-92b22271e5ff/bin/uautomizer-verify-bycVGegfSx/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-21 22:22:38,906 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_717498c2-b4f6-4fa1-8058-92b22271e5ff/bin/uautomizer-verify-bycVGegfSx/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2023-11-21 22:22:39,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:22:39,268 INFO L262 TraceCheckSpWp]: Trace formula consists of 424 conjuncts, 20 conjunts are in the unsatisfiable core [2023-11-21 22:22:39,271 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 22:22:39,479 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2023-11-21 22:22:39,479 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-21 22:22:39,479 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-21 22:22:39,479 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2117597409] [2023-11-21 22:22:39,479 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2117597409] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:22:39,479 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 22:22:39,480 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-11-21 22:22:39,480 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [754225152] [2023-11-21 22:22:39,480 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:22:39,480 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-21 22:22:39,480 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-21 22:22:39,481 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-21 22:22:39,481 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2023-11-21 22:22:39,481 INFO L87 Difference]: Start difference. First operand 83 states and 89 transitions. Second operand has 11 states, 10 states have (on average 2.7) internal successors, (27), 10 states have internal predecessors, (27), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-21 22:22:40,176 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 22:22:40,177 INFO L93 Difference]: Finished difference Result 93 states and 98 transitions. [2023-11-21 22:22:40,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-21 22:22:40,177 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 2.7) internal successors, (27), 10 states have internal predecessors, (27), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 47 [2023-11-21 22:22:40,177 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 22:22:40,178 INFO L225 Difference]: With dead ends: 93 [2023-11-21 22:22:40,178 INFO L226 Difference]: Without dead ends: 93 [2023-11-21 22:22:40,178 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 36 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=67, Invalid=239, Unknown=0, NotChecked=0, Total=306 [2023-11-21 22:22:40,179 INFO L413 NwaCegarLoop]: 28 mSDtfsCounter, 82 mSDsluCounter, 125 mSDsCounter, 0 mSdLazyCounter, 283 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 82 SdHoareTripleChecker+Valid, 153 SdHoareTripleChecker+Invalid, 295 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 283 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-11-21 22:22:40,179 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [82 Valid, 153 Invalid, 295 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 283 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-11-21 22:22:40,180 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2023-11-21 22:22:40,182 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 83. [2023-11-21 22:22:40,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 83 states, 64 states have (on average 1.203125) internal successors, (77), 73 states have internal predecessors, (77), 5 states have call successors, (5), 4 states have call predecessors, (5), 5 states have return successors, (8), 5 states have call predecessors, (8), 5 states have call successors, (8) [2023-11-21 22:22:40,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 90 transitions. [2023-11-21 22:22:40,184 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 90 transitions. Word has length 47 [2023-11-21 22:22:40,184 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 22:22:40,184 INFO L495 AbstractCegarLoop]: Abstraction has 83 states and 90 transitions. [2023-11-21 22:22:40,185 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 2.7) internal successors, (27), 10 states have internal predecessors, (27), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-21 22:22:40,185 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 90 transitions. [2023-11-21 22:22:40,185 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2023-11-21 22:22:40,185 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 22:22:40,185 INFO L195 NwaCegarLoop]: trace histogram [16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 22:22:40,190 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_717498c2-b4f6-4fa1-8058-92b22271e5ff/bin/uautomizer-verify-bycVGegfSx/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (19)] Forceful destruction successful, exit code 0 [2023-11-21 22:22:40,386 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_717498c2-b4f6-4fa1-8058-92b22271e5ff/bin/uautomizer-verify-bycVGegfSx/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-21 22:22:40,386 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ldv_kobject_putErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2023-11-21 22:22:40,386 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:22:40,387 INFO L85 PathProgramCache]: Analyzing trace with hash 724514910, now seen corresponding path program 1 times [2023-11-21 22:22:40,387 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-21 22:22:40,387 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [770495783] [2023-11-21 22:22:40,387 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:22:40,387 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-21 22:22:40,387 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_717498c2-b4f6-4fa1-8058-92b22271e5ff/bin/uautomizer-verify-bycVGegfSx/mathsat [2023-11-21 22:22:40,388 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_717498c2-b4f6-4fa1-8058-92b22271e5ff/bin/uautomizer-verify-bycVGegfSx/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-21 22:22:40,392 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_717498c2-b4f6-4fa1-8058-92b22271e5ff/bin/uautomizer-verify-bycVGegfSx/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2023-11-21 22:22:40,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:22:40,699 INFO L262 TraceCheckSpWp]: Trace formula consists of 424 conjuncts, 43 conjunts are in the unsatisfiable core [2023-11-21 22:22:40,703 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 22:22:40,730 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-11-21 22:22:40,743 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2023-11-21 22:22:41,674 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2023-11-21 22:22:41,675 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-21 22:22:41,675 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-21 22:22:41,675 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [770495783] [2023-11-21 22:22:41,675 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [770495783] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:22:41,675 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 22:22:41,675 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2023-11-21 22:22:41,676 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2061670812] [2023-11-21 22:22:41,676 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:22:41,676 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-11-21 22:22:41,676 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-21 22:22:41,677 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-11-21 22:22:41,677 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2023-11-21 22:22:41,678 INFO L87 Difference]: Start difference. First operand 83 states and 90 transitions. Second operand has 13 states, 11 states have (on average 2.4545454545454546) internal successors, (27), 11 states have internal predecessors, (27), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-21 22:22:42,661 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 22:22:42,661 INFO L93 Difference]: Finished difference Result 81 states and 87 transitions. [2023-11-21 22:22:42,662 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-21 22:22:42,662 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 11 states have (on average 2.4545454545454546) internal successors, (27), 11 states have internal predecessors, (27), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 47 [2023-11-21 22:22:42,662 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 22:22:42,663 INFO L225 Difference]: With dead ends: 81 [2023-11-21 22:22:42,664 INFO L226 Difference]: Without dead ends: 81 [2023-11-21 22:22:42,664 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 34 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=63, Invalid=243, Unknown=0, NotChecked=0, Total=306 [2023-11-21 22:22:42,665 INFO L413 NwaCegarLoop]: 24 mSDtfsCounter, 87 mSDsluCounter, 153 mSDsCounter, 0 mSdLazyCounter, 305 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 87 SdHoareTripleChecker+Valid, 177 SdHoareTripleChecker+Invalid, 311 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 305 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-11-21 22:22:42,665 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [87 Valid, 177 Invalid, 311 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 305 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-11-21 22:22:42,666 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2023-11-21 22:22:42,669 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 81. [2023-11-21 22:22:42,669 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 81 states, 64 states have (on average 1.15625) internal successors, (74), 71 states have internal predecessors, (74), 5 states have call successors, (5), 4 states have call predecessors, (5), 5 states have return successors, (8), 5 states have call predecessors, (8), 5 states have call successors, (8) [2023-11-21 22:22:42,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 87 transitions. [2023-11-21 22:22:42,670 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 87 transitions. Word has length 47 [2023-11-21 22:22:42,670 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 22:22:42,671 INFO L495 AbstractCegarLoop]: Abstraction has 81 states and 87 transitions. [2023-11-21 22:22:42,671 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 11 states have (on average 2.4545454545454546) internal successors, (27), 11 states have internal predecessors, (27), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-21 22:22:42,671 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 87 transitions. [2023-11-21 22:22:42,672 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2023-11-21 22:22:42,672 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 22:22:42,672 INFO L195 NwaCegarLoop]: trace histogram [16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 22:22:42,679 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_717498c2-b4f6-4fa1-8058-92b22271e5ff/bin/uautomizer-verify-bycVGegfSx/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (20)] Forceful destruction successful, exit code 0 [2023-11-21 22:22:42,878 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_717498c2-b4f6-4fa1-8058-92b22271e5ff/bin/uautomizer-verify-bycVGegfSx/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-21 22:22:42,878 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ldv_kobject_putErr7ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2023-11-21 22:22:42,879 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:22:42,879 INFO L85 PathProgramCache]: Analyzing trace with hash 474185817, now seen corresponding path program 1 times [2023-11-21 22:22:42,879 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-21 22:22:42,880 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [764090358] [2023-11-21 22:22:42,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:22:42,880 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-21 22:22:42,880 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_717498c2-b4f6-4fa1-8058-92b22271e5ff/bin/uautomizer-verify-bycVGegfSx/mathsat [2023-11-21 22:22:42,881 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_717498c2-b4f6-4fa1-8058-92b22271e5ff/bin/uautomizer-verify-bycVGegfSx/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-21 22:22:42,883 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_717498c2-b4f6-4fa1-8058-92b22271e5ff/bin/uautomizer-verify-bycVGegfSx/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (21)] Waiting until timeout for monitored process [2023-11-21 22:22:43,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:22:43,265 INFO L262 TraceCheckSpWp]: Trace formula consists of 431 conjuncts, 33 conjunts are in the unsatisfiable core [2023-11-21 22:22:43,269 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 22:22:43,298 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2023-11-21 22:22:43,713 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2023-11-21 22:22:43,713 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-21 22:22:43,713 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-21 22:22:43,714 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [764090358] [2023-11-21 22:22:43,714 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [764090358] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:22:43,714 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 22:22:43,714 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-11-21 22:22:43,714 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1041022070] [2023-11-21 22:22:43,714 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:22:43,714 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-11-21 22:22:43,715 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-21 22:22:43,715 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-11-21 22:22:43,715 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2023-11-21 22:22:43,715 INFO L87 Difference]: Start difference. First operand 81 states and 87 transitions. Second operand has 13 states, 11 states have (on average 2.6363636363636362) internal successors, (29), 10 states have internal predecessors, (29), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-21 22:22:44,637 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 22:22:44,637 INFO L93 Difference]: Finished difference Result 80 states and 86 transitions. [2023-11-21 22:22:44,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-21 22:22:44,638 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 11 states have (on average 2.6363636363636362) internal successors, (29), 10 states have internal predecessors, (29), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 49 [2023-11-21 22:22:44,638 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 22:22:44,639 INFO L225 Difference]: With dead ends: 80 [2023-11-21 22:22:44,639 INFO L226 Difference]: Without dead ends: 80 [2023-11-21 22:22:44,639 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 36 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=76, Invalid=266, Unknown=0, NotChecked=0, Total=342 [2023-11-21 22:22:44,640 INFO L413 NwaCegarLoop]: 25 mSDtfsCounter, 109 mSDsluCounter, 137 mSDsCounter, 0 mSdLazyCounter, 268 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 109 SdHoareTripleChecker+Valid, 162 SdHoareTripleChecker+Invalid, 276 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 268 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-11-21 22:22:44,640 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [109 Valid, 162 Invalid, 276 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 268 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-11-21 22:22:44,641 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2023-11-21 22:22:44,643 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 80. [2023-11-21 22:22:44,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 80 states, 64 states have (on average 1.140625) internal successors, (73), 70 states have internal predecessors, (73), 5 states have call successors, (5), 4 states have call predecessors, (5), 5 states have return successors, (8), 5 states have call predecessors, (8), 5 states have call successors, (8) [2023-11-21 22:22:44,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 86 transitions. [2023-11-21 22:22:44,645 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 86 transitions. Word has length 49 [2023-11-21 22:22:44,645 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 22:22:44,645 INFO L495 AbstractCegarLoop]: Abstraction has 80 states and 86 transitions. [2023-11-21 22:22:44,645 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 11 states have (on average 2.6363636363636362) internal successors, (29), 10 states have internal predecessors, (29), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-21 22:22:44,645 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 86 transitions. [2023-11-21 22:22:44,646 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2023-11-21 22:22:44,646 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 22:22:44,646 INFO L195 NwaCegarLoop]: trace histogram [16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 22:22:44,653 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_717498c2-b4f6-4fa1-8058-92b22271e5ff/bin/uautomizer-verify-bycVGegfSx/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (21)] Forceful destruction successful, exit code 0 [2023-11-21 22:22:44,846 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_717498c2-b4f6-4fa1-8058-92b22271e5ff/bin/uautomizer-verify-bycVGegfSx/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-21 22:22:44,847 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ldv_kobject_putErr9ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2023-11-21 22:22:44,847 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:22:44,847 INFO L85 PathProgramCache]: Analyzing trace with hash 322380793, now seen corresponding path program 1 times [2023-11-21 22:22:44,848 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-21 22:22:44,848 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1110331252] [2023-11-21 22:22:44,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:22:44,848 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-21 22:22:44,848 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_717498c2-b4f6-4fa1-8058-92b22271e5ff/bin/uautomizer-verify-bycVGegfSx/mathsat [2023-11-21 22:22:44,850 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_717498c2-b4f6-4fa1-8058-92b22271e5ff/bin/uautomizer-verify-bycVGegfSx/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-21 22:22:44,876 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_717498c2-b4f6-4fa1-8058-92b22271e5ff/bin/uautomizer-verify-bycVGegfSx/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (22)] Waiting until timeout for monitored process [2023-11-21 22:22:45,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:22:45,310 INFO L262 TraceCheckSpWp]: Trace formula consists of 436 conjuncts, 80 conjunts are in the unsatisfiable core [2023-11-21 22:22:45,315 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 22:22:45,404 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 47 treesize of output 10 [2023-11-21 22:22:45,582 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 14 [2023-11-21 22:22:45,950 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-21 22:22:45,951 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 117 treesize of output 41 [2023-11-21 22:22:46,348 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-21 22:22:46,348 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 70 treesize of output 38 [2023-11-21 22:22:46,522 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2023-11-21 22:22:46,522 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-21 22:22:46,522 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-21 22:22:46,523 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1110331252] [2023-11-21 22:22:46,523 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1110331252] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:22:46,523 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 22:22:46,523 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2023-11-21 22:22:46,523 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [668239678] [2023-11-21 22:22:46,523 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:22:46,525 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2023-11-21 22:22:46,526 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-21 22:22:46,526 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2023-11-21 22:22:46,527 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=373, Unknown=0, NotChecked=0, Total=420 [2023-11-21 22:22:46,527 INFO L87 Difference]: Start difference. First operand 80 states and 86 transitions. Second operand has 21 states, 19 states have (on average 1.6842105263157894) internal successors, (32), 19 states have internal predecessors, (32), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-21 22:22:49,992 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 22:22:49,992 INFO L93 Difference]: Finished difference Result 73 states and 76 transitions. [2023-11-21 22:22:49,993 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-11-21 22:22:49,993 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 19 states have (on average 1.6842105263157894) internal successors, (32), 19 states have internal predecessors, (32), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 52 [2023-11-21 22:22:49,993 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 22:22:49,994 INFO L225 Difference]: With dead ends: 73 [2023-11-21 22:22:49,994 INFO L226 Difference]: Without dead ends: 73 [2023-11-21 22:22:49,995 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 157 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=123, Invalid=933, Unknown=0, NotChecked=0, Total=1056 [2023-11-21 22:22:49,995 INFO L413 NwaCegarLoop]: 29 mSDtfsCounter, 31 mSDsluCounter, 409 mSDsCounter, 0 mSdLazyCounter, 460 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 438 SdHoareTripleChecker+Invalid, 468 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 460 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2023-11-21 22:22:49,996 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [31 Valid, 438 Invalid, 468 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 460 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2023-11-21 22:22:49,997 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2023-11-21 22:22:49,999 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 73. [2023-11-21 22:22:50,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 73 states, 61 states have (on average 1.098360655737705) internal successors, (67), 64 states have internal predecessors, (67), 4 states have call successors, (4), 4 states have call predecessors, (4), 4 states have return successors, (5), 4 states have call predecessors, (5), 4 states have call successors, (5) [2023-11-21 22:22:50,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 76 transitions. [2023-11-21 22:22:50,001 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 76 transitions. Word has length 52 [2023-11-21 22:22:50,001 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 22:22:50,001 INFO L495 AbstractCegarLoop]: Abstraction has 73 states and 76 transitions. [2023-11-21 22:22:50,002 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 19 states have (on average 1.6842105263157894) internal successors, (32), 19 states have internal predecessors, (32), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-21 22:22:50,002 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 76 transitions. [2023-11-21 22:22:50,002 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2023-11-21 22:22:50,002 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 22:22:50,003 INFO L195 NwaCegarLoop]: trace histogram [16, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 22:22:50,009 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_717498c2-b4f6-4fa1-8058-92b22271e5ff/bin/uautomizer-verify-bycVGegfSx/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (22)] Forceful destruction successful, exit code 0 [2023-11-21 22:22:50,203 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_717498c2-b4f6-4fa1-8058-92b22271e5ff/bin/uautomizer-verify-bycVGegfSx/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-21 22:22:50,203 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2023-11-21 22:22:50,204 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:22:50,204 INFO L85 PathProgramCache]: Analyzing trace with hash 2042761150, now seen corresponding path program 1 times [2023-11-21 22:22:50,204 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-21 22:22:50,204 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1871018206] [2023-11-21 22:22:50,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:22:50,204 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-21 22:22:50,205 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_717498c2-b4f6-4fa1-8058-92b22271e5ff/bin/uautomizer-verify-bycVGegfSx/mathsat [2023-11-21 22:22:50,206 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_717498c2-b4f6-4fa1-8058-92b22271e5ff/bin/uautomizer-verify-bycVGegfSx/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-21 22:22:50,207 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_717498c2-b4f6-4fa1-8058-92b22271e5ff/bin/uautomizer-verify-bycVGegfSx/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (23)] Waiting until timeout for monitored process [2023-11-21 22:22:50,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:22:50,815 INFO L262 TraceCheckSpWp]: Trace formula consists of 484 conjuncts, 105 conjunts are in the unsatisfiable core [2023-11-21 22:22:50,823 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 22:22:51,026 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 22:22:51,028 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 22:22:51,029 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 22:22:51,029 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-21 22:22:51,030 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-21 22:22:51,036 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 7 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 33 [2023-11-21 22:22:51,275 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-21 22:22:51,275 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 15 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 55 treesize of output 45 [2023-11-21 22:22:51,758 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-21 22:22:51,759 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 153 treesize of output 81 [2023-11-21 22:22:52,332 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-21 22:22:52,333 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 201 treesize of output 129 [2023-11-21 22:22:54,841 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 139 trivial. 0 not checked. [2023-11-21 22:22:54,842 INFO L327 TraceCheckSpWp]: Computing backward predicates...